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review.jami.net / pjproject / 8f57dcac94a1ab3a876a408de3e87ecc7f4a686b / . / third_party / resample / sndlib-20 / headers.c
blob: 676066a4ead424f7aff31fe5ef91341760a7ff39 [file] [log] [blame]
/* readers/writers for various sound file headers
*
* --------------------------------
* int mus_header_read (const char *name)
* int mus_header_write (const char *name, int type, int in_srate, int in_chans, off_t loc, off_t size_in_samples, int format, const char *comment, int len)
* int mus_header_initialize (void)
*
* Once mus_header_read has been called, the data in it can be accessed through:
*
* off_t mus_header_samples (void) samples
* off_t mus_header_data_location (void) location of data (bytes)
* int mus_header_chans (void) channels
* int mus_header_srate (void) srate
* int mus_header_type (void) header type (i.e. aiff, wave, etc) (see sndlib.h)
* int mus_header_format (void) data format (see sndlib.h)
* off_t mus_header_comment_start (void) comment start location (if any) (bytes)
* off_t mus_header_comment_end (void) comment end location
* off_t mus_header_aux_comment_start (int n) if multiple comments, nth start location
* off_t mus_header_aux_comment_end (int n) if multiple comments, nth end location
* int mus_header_type_specifier (void) original (header-specific) type ID
* int mus_header_bits_per_sample (void) sample width in bits
* off_t mus_header_true_length (void) true (lseek) file length
* int mus_bytes_per_sample (int format) sample width in bytes
* bool mus_header_writable(int type, int format) can we write this header
* --------------------------------
*
* "Linear" below means 2's complement integer.
*
* Currently supported read/write (in standard data formats):
* NeXT/Sun/DEC/AFsp
* AIFF/AIFC
* RIFF (microsoft wave)
* IRCAM (old style)
* NIST-sphere
* no header
*
* Currently supported read-only (in selected data formats):
* 8SVX (IFF), EBICSF, INRS, ESPS, SPPACK, ADC (OGI), AVR, VOC, CSL, snack "SMP", PVF,
* Sound Tools, Turtle Beach SMP, SoundFont 2.0, Sound Designer I, PSION alaw, MAUD,
* Gravis Ultrasound, Comdisco SPW, Goldwave sample, OMF, NVF,
* Sonic Foundry, SBStudio II, Delusion digital, Digiplayer ST3, Farandole Composer WaveSample,
* Ultratracker WaveSample, Sample Dump exchange, Yamaha SY85 and SY99 (buggy), Yamaha TX16W,
* Covox v8, AVI, Kurzweil 2000, Paris Ensoniq, Impulse tracker, Korg, Akai type 4, Maui,
*
* for a few of these I'm still trying to get documentation -- best sources of info
* are ftp.cwi.nl:pub/audio (info files), the AFsp sources, and the SOX sources.
* sox and gsm are at ftp.cwi.nl, AFsp is from kabal@Polaris.EE.McGill.CA (Peter Kabal) as
* ftp.TSP.EE.McGill.CA:/pub/AFsp/AFsp-V3R2.tar.Z. The Sound Designer formats are described
* in the "Developer Documentation" from Digidesign. Other useful sources can be found at
* ftp.x.org:/contrib/audio/nas, svr-ftp.eng.cam.ac.uk:/comp.speech/tools, and
* at http://www.wotsit.org. I put many of my test cases in
* ccrma-ftp.stanford.edu:/pub/Lisp/sf.tar.gz. The RIFF format is described in the
* Microsoft Multimedia Programmer's Reference Manual at ftp.microsoft.com:/SoftLib/MSLFILES/MDRK.EXE.
* AVI format is described in http://www.rahul.net/jfm/avi.html.
*
* For a lot of info and examples see http://www.TSP.ECE.McGill.CA/MMSP/Documents/AudioFormats/index.html
*
* The main problem with compressed sound files is that you can't do reliable
* random access to the data, can't easily read backwards, and most of the compression
* schemes are proprietary (and appalling), but to translate Mus10/Sam, HCOM, IEEE text,
* MIDI sample dumps, various adpcm cases, NIST shortpack files, and AVI see snd-trans.c
* in the sound editor (snd-8.tar.gz).
*
* If anyone has information on any other header or data formats, I would be most interested in it,
* but only if it can be included in this file.
*
* ivc format appears to have 16 bytes of header (-1 5 0 0 0 0 -> mulaw) followed by mulaw or alaw data
*/
#include <mus-config.h>
#if USE_SND
#include "snd.h"
#else
#if HAVE_RUBY && (!CLM)
#include "xen.h"
#endif
#endif
#include <math.h>
#include <stdio.h>
#include <errno.h>
#include <stdlib.h>
#if HAVE_STRING_H
#include <string.h>
#endif
#if (defined(HAVE_LIBC_H) && (!defined(HAVE_UNISTD_H)))
#include <libc.h>
#else
#if (!(defined(_MSC_VER)))
#include <unistd.h>
#endif
#endif
#include "_sndlib.h"
#include "sndlib-strings.h"
static bool hdrbuf_is_inited = false;
#define HDRBUFSIZ 256
static unsigned char *hdrbuf;
#define INITIAL_READ_SIZE 32
/* AIFF files can have any number of ANNO chunks, so we'll grab at least 4 of them */
#define AUX_COMMENTS 4
static off_t *aux_comment_start = NULL, *aux_comment_end = NULL;
#define LOOPS 2
static int *loop_modes = NULL, *loop_starts = NULL, *loop_ends = NULL;
static int markers = 0;
static int *marker_ids = NULL, *marker_positions = NULL;
/* for CLM */
void mus_reset_headers_c(void)
{
hdrbuf_is_inited = false;
markers = 0;
}
int mus_header_initialize(void)
{
if (!hdrbuf_is_inited)
{
hdrbuf_is_inited = true;
hdrbuf = (unsigned char *)CALLOC(HDRBUFSIZ, sizeof(unsigned char));
aux_comment_start = (off_t *)CALLOC(AUX_COMMENTS, sizeof(off_t));
aux_comment_end = (off_t *)CALLOC(AUX_COMMENTS, sizeof(off_t));
loop_modes = (int *)CALLOC(LOOPS, sizeof(int));
loop_starts = (int *)CALLOC(LOOPS, sizeof(int));
loop_ends = (int *)CALLOC(LOOPS, sizeof(int));
if ((hdrbuf == NULL) || (aux_comment_start == NULL) || (aux_comment_end == NULL) ||
(loop_modes == NULL) || (loop_starts == NULL) || (loop_ends == NULL))
return(mus_error(MUS_MEMORY_ALLOCATION_FAILED, "mus_header_initialize: buffer allocation failed"));
}
return(MUS_NO_ERROR);
}
static const unsigned char I_DSND[4] = {'.','s','n','d'}; /* NeXT/Sun/Dec/SGI/AFsp first word */
static const unsigned char I_FORM[4] = {'F','O','R','M'}; /* AIFF first word */
static const unsigned char I_AIFF[4] = {'A','I','F','F'}; /* AIFF second word */
static const unsigned char I_AIFC[4] = {'A','I','F','C'}; /* ditto but might be compressed data */
static const unsigned char I_COMM[4] = {'C','O','M','M'};
static const unsigned char I_COMT[4] = {'C','O','M','T'};
static const unsigned char I_INFO[4] = {'I','N','F','O'};
static const unsigned char I_INST[4] = {'I','N','S','T'};
static const unsigned char I_inst[4] = {'i','n','s','t'}; /* RIFF wants lower case, just to be different */
static const unsigned char I_MARK[4] = {'M','A','R','K'};
static const unsigned char I_SSND[4] = {'S','S','N','D'};
static const unsigned char I_FVER[4] = {'F','V','E','R'};
static const unsigned char I_NONE[4] = {'N','O','N','E'};
static const unsigned char I_ULAW[4] = {'U','L','A','W'}; /* AIFC compression types that we can handle */
static const unsigned char I_ulaw[4] = {'u','l','a','w'}; /* or maybe it's lowercase (Apple) ... */
static const unsigned char I_ima4[4] = {'i','m','a','4'}; /* AIFC IMA adpcm apparently */
static const unsigned char I_raw_[4] = {'r','a','w',' '}; /* AIFC offset binary OS 8.5 (others are 'MAC3' 'MAC6' 'cdx4' 'cdx2' 'str4') */
static const unsigned char I_sowt[4] = {'s','o','w','t'}; /* AIFC 16-bit little endian -- used by Mac when extracting CD tracks */
static const unsigned char I_in32[4] = {'i','n','3','2'}; /* AIFC */
static const unsigned char I_in24[4] = {'i','n','2','4'}; /* AIFC */
static const unsigned char I_ni23[4] = {'n','i','2','3'}; /* AIFC */
static const unsigned char I_fl32[4] = {'f','l','3','2'}; /* AIFC 32-bit float */
static const unsigned char I_FL32[4] = {'F','L','3','2'}; /* AIFC 32-bit float (apparently used by CSound and SoundHack) */
static const unsigned char I_fl64[4] = {'f','l','6','4'}; /* AIFC 64-bit float */
static const unsigned char I_twos[4] = {'t','w','o','s'}; /* AIFC big endian? */
static const unsigned char I_ALAW[4] = {'A','L','A','W'};
static const unsigned char I_alaw[4] = {'a','l','a','w'}; /* apple */
static const unsigned char I_APPL[4] = {'A','P','P','L'};
static const unsigned char I_MUS_[4] = {'C','L','M',' '}; /* I hereby claim this AIFF chunk name */
static const unsigned char I_RIFF[4] = {'R','I','F','F'}; /* RIFF first word */
static const unsigned char I_RIFX[4] = {'R','I','F','X'}; /* RIFX first word (big-endian RIFF file) */
static const unsigned char I_WAVE[4] = {'W','A','V','E'};
static const unsigned char I_fmt_[4] = {'f','m','t',' '};
static const unsigned char I_data[4] = {'d','a','t','a'};
static const unsigned char I_fact[4] = {'f','a','c','t'}; /* used by compressed RIFF files */
static const unsigned char I_clm_[4] = {'c','l','m',' '};
static const unsigned char I_NIST[4] = {'N','I','S','T'}; /* first word of NIST SPHERE files */
static const unsigned char I_8SVX[4] = {'8','S','V','X'}; /* AIFF other choice */
static const unsigned char I_16SV[4] = {'1','6','S','V'}; /* hmmm... 16-bit 8svx? */
static const unsigned char I_VOC0[4] = {'C','r','e','a'}; /* Actual text is "Creative Voice File" */
static const unsigned char I_VOC1[4] = {'t','i','v','e'};
static const unsigned char I_SOUN[4] = {'S','O','U','N'}; /* Sound Tools first word="SOUND" -- not unique as SMP files start with "SOUND SAMPLE" */
static const unsigned char I_D_SA[4] = {'D',' ','S','A'};
static const unsigned char I_MPLE[4] = {'M','P','L','E'};
static const unsigned char I_BODY[4] = {'B','O','D','Y'}; /* next 4 for 8svx chunk names */
static const unsigned char I_VHDR[4] = {'V','H','D','R'};
static const unsigned char I_CHAN[4] = {'C','H','A','N'};
static const unsigned char I_ANNO[4] = {'A','N','N','O'};
static const unsigned char I_NAME[4] = {'N','A','M','E'};
static const unsigned char I_AVR_[4] = {'2','B','I','T'}; /* first word of AVR files */
static const unsigned char I_HCOM[4] = {'H','C','O','M'};
static const unsigned char I_FSSD[4] = {'F','S','S','D'};
static const unsigned char I_SPIB[4] = {'%','/','/','\n'}; /* first word of IEEE spib text sound files */
static const unsigned char I_S___[4] = {'%','-','-','-'}; /* first word of other IEEE spib text sound files */
static const unsigned char I_ALaw[4] = {'A','L','a','w'}; /* first word of PSION alaw files */
static const unsigned char I_Soun[4] = {'S','o','u','n'}; /* second */
static const unsigned char I_MAUD[4] = {'M','A','U','D'}; /* MAUD specialization of AIFF */
static const unsigned char I_MHDR[4] = {'M','H','D','R'};
static const unsigned char I_MDAT[4] = {'M','D','A','T'};
static const unsigned char I_mdat[4] = {'m','d','a','t'}; /* quicktime */
static const unsigned char I_MThd[4] = {'M','T','h','d'}; /* sigh -- the M word */
static const unsigned char I_DECN[4] = {'.','s','d','\0'}; /* first word of DEC files (?) */
static const unsigned char I_sfbk[4] = {'s','f','b','k'}; /* SoundFont 2.0 */
static const unsigned char I_sdta[4] = {'s','d','t','a'};
static const unsigned char I_shdr[4] = {'s','h','d','r'};
static const unsigned char I_pdta[4] = {'p','d','t','a'};
static const unsigned char I_LIST[4] = {'L','I','S','T'};
static const unsigned char I_GF1P[4] = {'G','F','1','P'}; /* first word of Gravis Ultrsound patch files */
static const unsigned char I_ATCH[4] = {'A','T','C','H'}; /* second word */
static const unsigned char I_DSIG[4] = {'$','S','I','G'}; /* first word of Comdisco SPW file */
static const unsigned char I_NAL_[4] = {'N','A','L','_'}; /* second word */
static const unsigned char I_GOLD[4] = {'G','O','L','D'}; /* first word Goldwave(?) sample file */
static const unsigned char I__WAV[4] = {' ','S','A','M'}; /* second word */
static const unsigned char I_SRFS[4] = {'S','R','F','S'}; /* first word Sonic Resource Foundry file(?) */
static const unsigned char I_Diam[4] = {'D','i','a','m'}; /* first word DiamondWare file */
static const unsigned char I_ondW[4] = {'o','n','d','W'}; /* second word */
static const unsigned char I_CSRE[4] = {'C','S','R','E'}; /* adf first word -- second starts with "40" */
static const unsigned char I_SND_[4] = {'S','N','D',' '}; /* SBStudio II */
static const unsigned char I_SNIN[4] = {'S','N','I','N'};
static const unsigned char I_SNNA[4] = {'S','N','N','A'};
static const unsigned char I_SNDT[4] = {'S','N','D','T'};
static const unsigned char I_DDSF[4] = {'D','D','S','F'}; /* Delusion Digital Sound File */
static const unsigned char I_FSMt[4] = {'F','S','M',(unsigned char)'\376'}; /* Farandole Composer WaveSample */
static const unsigned char I_SDXc[4] = {'S','D','X',':'}; /* Sample dump exchange format */
static const unsigned char I_UWFD[4] = {'U','W','F','D'}; /* Ultratracker Wavesample */
static const unsigned char I_LM89[4] = {'L','M','8','9'}; /* Yamaha TX-16 */
static const unsigned char I_SY80[4] = {'S','Y','8','0'}; /* Yamaha SY-99 */
static const unsigned char I_SY85[4] = {'S','Y','8','5'}; /* Yamaha SY-85 */
static const unsigned char I_SCRS[4] = {'S','C','R','S'}; /* Digiplayer ST3 */
static const unsigned char I_covox[4] = {(unsigned char)'\377','\125',(unsigned char)'\377',(unsigned char)'\252'};
/* static const unsigned char I_DSPL[4] = {'D','S','P','L'}; */ /* Digitracker SPL (now obsolete) */
static const unsigned char I_AVI_[4] = {'A','V','I',' '}; /* RIFF AVI */
static const unsigned char I_strf[4] = {'s','t','r','f'};
static const unsigned char I_movi[4] = {'m','o','v','i'};
static const unsigned char I_PRAM[4] = {'P','R','A','M'}; /* Kurzweil 2000 */
static const unsigned char I_ones[4] = {(unsigned char)'\377',(unsigned char)'\377',(unsigned char)'\377',(unsigned char)'\377'};
static const unsigned char I_zeros[4] = {'\0','\0','\0','\0'};
static const unsigned char I_asf0[4] = {(unsigned char)'\321','\051',(unsigned char)'\342',(unsigned char)'\326'};
static const unsigned char I_asf1[4] = {(unsigned char)'\332','\065',(unsigned char)'\321','\021'};
static const unsigned char I_asf2[4] = {(unsigned char)'\220','\064','\000',(unsigned char)'\240'};
static const unsigned char I_asf3[4] = {(unsigned char)'\311','\003','\111',(unsigned char)'\276'};
static const unsigned char I__PAF[4] = {' ','p','a','f'}; /* Paris Ensoniq */
static const unsigned char I_FAP_[4] = {'f','a','p',' '}; /* Paris Ensoniq */
static const unsigned char I_DS16[4] = {'D','S','1','6'}; /* CSL */
static const unsigned char I_HEDR[4] = {'H','E','D','R'};
static const unsigned char I_HDR8[4] = {'H','D','R','8'};
static const unsigned char I_SDA_[4] = {'S','D','A','_'};
static const unsigned char I_SDAB[4] = {'S','D','A','B'};
static const unsigned char I_SD_B[4] = {'S','D','_','B'};
static const unsigned char I_NOTE[4] = {'N','O','T','E'};
static const unsigned char I_file[4] = {'f','i','l','e'}; /* snack "SMP" */
static const unsigned char I__sam[4] = {'=','s','a','m'};
static const unsigned char I_SU7M[4] = {'S','U','7','M'};
static const unsigned char I_SU7R[4] = {'S','U','7','R'};
static const unsigned char I_PVF1[4] = {'P','V','F','1'}; /* portable voice format (mgetty) */
static const unsigned char I_PVF2[4] = {'P','V','F','2'};
static const unsigned char I_AUTH[4] = {'A','U','T','H'};
static const unsigned char I_riff[4] = {'r','i','f','f'}; /* SoundForge */
static const unsigned char I_TWIN[4] = {'T','W','I','N'}; /* TwinVQ */
static const unsigned char I_IMPS[4] = {'I','M','P','S'}; /* Impulse Tracker */
static const unsigned char I_SMP1[4] = {'S','M','P','1'}; /* Korg */
static const unsigned char I_Maui[4] = {'M','a','u','i'}; /* Turtle Beach */
static const unsigned char I_SDIF[4] = {'S','D','I','F'}; /* IRCAM sdif */
static const unsigned char I_NVF_[4] = {'N','V','F',' '}; /* Nomad II Creative NVF */
static const unsigned char I_VFMT[4] = {'V','F','M','T'}; /* Nomad II Creative NVF */
static const unsigned char I_OggS[4] = {'O','g','g','S'}; /* Ogg-related files, apparently -- ogg123 has "vorbis" instead of "Speex" */
static const unsigned char I_fLaC[4] = {'f','L','a','C'}; /* FLAC */
static const unsigned char I_ajkg[4] = {'a','j','k','g'}; /* shorten */
static const unsigned char I_TTA1[4] = {'T','T','A','1'}; /* ttaenc */
static const unsigned char I_wvpk[4] = {'w','v','p','k'}; /* wavpack */
#define I_IRCAM_VAX 0x0001a364
#define I_IRCAM_SUN 0x0002a364
#define I_IRCAM_MIPS 0x0003a364
#define I_IRCAM_NEXT 0x0004a364
#define NINRS 7
static const unsigned int I_INRS[NINRS] = {0xcb460020, 0xd0465555, 0xfa460000, 0x1c470040, 0x3b470080, 0x7a470000, 0x9c470040};
static off_t data_location = 0;
static int srate = 0, chans = 0, header_type = MUS_UNSUPPORTED, data_format = MUS_UNKNOWN, original_data_format = 0;
static int type_specifier = 0, bits_per_sample = 0, block_align = 0, fact_samples = 0;
static off_t comment_start = 0, comment_end = 0;
static off_t true_file_length = 0, data_size = 0;
static int base_detune = 0, base_note = 0;
static bool little_endian = false;
off_t mus_header_samples(void) {return(data_size);}
off_t mus_header_data_location(void) {return(data_location);}
int mus_header_chans(void) {return(chans);}
int mus_header_srate(void) {return(srate);}
int mus_header_type(void) {return(header_type);}
int mus_header_format(void) {return(data_format);}
off_t mus_header_comment_start(void) {return(comment_start);}
off_t mus_header_comment_end(void) {return(comment_end);}
off_t mus_header_aux_comment_start(int n) {if (aux_comment_start) return(aux_comment_start[n]); else return(-1);}
off_t mus_header_aux_comment_end(int n) {if (aux_comment_end) return(aux_comment_end[n]); else return(-1);}
int mus_header_type_specifier(void) {return(type_specifier);}
int mus_header_bits_per_sample(void) {return(bits_per_sample);}
int mus_header_fact_samples(void) {return(fact_samples);}
int mus_header_block_align(void) {return(block_align);}
off_t mus_header_true_length(void) {return(true_file_length);}
int mus_header_original_format(void) {return(original_data_format);}
int mus_header_loop_mode(int which) {if (loop_modes) return(loop_modes[which]); else return(-1);}
int mus_header_loop_start(int which) {if (loop_starts) return(loop_starts[which]); else return(-1);}
int mus_header_loop_end(int which) {if (loop_ends) return(loop_ends[which]); else return(-1);}
int mus_header_mark_position(int id) {int i; for (i = 0; i < markers; i++) {if (marker_ids[i] == id) return(marker_positions[i]);} return(-1);}
int mus_header_base_detune(void) {return(base_detune);}
int mus_header_base_note(void) {return(base_note);}
int mus_bytes_per_sample(int format)
{
switch (format)
{
case MUS_BYTE: return(1); break;
case MUS_BSHORT: return(2); break;
case MUS_UBYTE: return(1); break;
case MUS_MULAW: return(1); break;
case MUS_ALAW: return(1); break;
case MUS_BINT: return(4); break;
case MUS_BFLOAT: return(4); break;
case MUS_BFLOAT_UNSCALED: return(4); break;
case MUS_B24INT: return(3); break;
case MUS_BDOUBLE: return(8); break;
case MUS_BDOUBLE_UNSCALED: return(8); break;
case MUS_LSHORT: return(2); break;
case MUS_LINT: return(4); break;
case MUS_LFLOAT: return(4); break;
case MUS_LDOUBLE: return(8); break;
case MUS_LFLOAT_UNSCALED: return(4); break;
case MUS_LDOUBLE_UNSCALED: return(8); break;
case MUS_L24INT: return(3); break;
case MUS_UBSHORT: return(2); break;
case MUS_ULSHORT: return(2); break;
case MUS_BINTN: return(4); break;
case MUS_LINTN: return(4); break;
default: return(1); break; /* we divide by this number, so 0 is not safe */
}
}
off_t mus_samples_to_bytes (int format, off_t size) {return(size * (mus_bytes_per_sample(format)));}
off_t mus_bytes_to_samples (int format, off_t size) {return((off_t)(size / (mus_bytes_per_sample(format))));}
static bool equal_big_or_little_endian(const unsigned char *n1, const unsigned int n2)
{
return((mus_char_to_ubint(n1) == n2) || (mus_char_to_ulint(n1) == n2));
}
static short big_or_little_endian_short(const unsigned char *n, bool little)
{
if (little) return(mus_char_to_lshort(n));
return(mus_char_to_bshort(n));
}
static int big_or_little_endian_int(const unsigned char *n, bool little)
{
if (little) return(mus_char_to_lint(n));
return(mus_char_to_bint(n));
}
static unsigned int big_or_little_endian_uint(const unsigned char *n, bool little)
{
if (little) return(mus_char_to_ulint(n));
return(mus_char_to_ubint(n));
}
static float big_or_little_endian_float(const unsigned char *n, bool little)
{
if (little) return(mus_char_to_lfloat(n));
return(mus_char_to_bfloat(n));
}
static bool match_four_chars(const unsigned char *head, const unsigned char *match)
{
return((head[0] == match[0]) &&
(head[1] == match[1]) &&
(head[2] == match[2]) &&
(head[3] == match[3]));
}
static void write_four_chars(unsigned char *head, const unsigned char *match)
{
head[0] = match[0];
head[1] = match[1];
head[2] = match[2];
head[3] = match[3];
}
const char *mus_header_type_name(int type)
{
switch (type)
{
case MUS_NEXT: return("Sun/Next"); break;
case MUS_AIFC: return("AIFC"); break;
case MUS_RIFF: return("RIFF"); break;
case MUS_BICSF: return("BICSF"); break;
case MUS_NIST: return("NIST"); break;
case MUS_INRS: return("INRS"); break;
case MUS_ESPS: return("ESPS"); break;
case MUS_SVX: return("SVX8"); break;
case MUS_VOC: return("VOC"); break;
case MUS_SNDT: return("SNDT"); break;
case MUS_RAW: return("raw (no header)"); break;
case MUS_SMP: return("SMP"); break;
case MUS_AVR: return("AVR"); break;
case MUS_IRCAM: return("IRCAM"); break;
case MUS_SD1: return("Sound Designer 1"); break;
case MUS_SPPACK: return("SPPACK"); break;
case MUS_MUS10: return("Mus10"); break;
case MUS_HCOM: return("HCOM"); break;
case MUS_PSION: return("PSION"); break;
case MUS_MAUD: return("MAUD"); break;
case MUS_IEEE: return("IEEE text"); break;
case MUS_MATLAB: return("Matlab"); break;
case MUS_ADC: return("ADC/OGI"); break;
case MUS_MIDI: return("MIDI"); break;
case MUS_SOUNDFONT: return("SoundFont"); break;
case MUS_GRAVIS: return("Gravis Ultrasound patch"); break;
case MUS_COMDISCO: return("Comdisco SPW signal"); break;
case MUS_GOLDWAVE: return("Goldwave sample"); break;
case MUS_SRFS: return("SRFS"); break;
case MUS_MIDI_SAMPLE_DUMP: return("MIDI sample dump"); break;
case MUS_DIAMONDWARE: return("DiamondWare"); break;
case MUS_ADF: return("CSRE adf"); break;
case MUS_SBSTUDIOII: return("SBStudioII"); break;
case MUS_DELUSION: return("Delusion"); break;
case MUS_FARANDOLE: return("Farandole"); break;
case MUS_SAMPLE_DUMP: return("Sample dump"); break;
case MUS_ULTRATRACKER: return("Ultratracker"); break;
case MUS_YAMAHA_TX16W: return("TX-16W"); break;
case MUS_YAMAHA_SY85: return("Sy-85"); break;
case MUS_YAMAHA_SY99: return("Sy-99"); break;
case MUS_KURZWEIL_2000: return("Kurzweil 2000"); break;
case MUS_KORG: return("Korg"); break;
case MUS_MAUI: return("Turtle Beach"); break;
case MUS_IMPULSETRACKER: return("Impulse Tracker"); break;
case MUS_AKAI4: return("AKAI 4"); break;
case MUS_DIGIPLAYER: return("Digiplayer ST3"); break;
case MUS_COVOX: return("Covox V8"); break;
case MUS_AVI: return("AVI"); break;
case MUS_OMF: return("OMF"); break;
case MUS_QUICKTIME: return("Quicktime"); break;
case MUS_ASF: return("asf"); break;
case MUS_AIFF: return("AIFF"); break;
case MUS_PAF: return("Ensoniq Paris"); break;
case MUS_CSL: return("CSL"); break;
case MUS_FILE_SAMP: return("snack SMP"); break;
case MUS_PVF: return("Portable Voice Format"); break;
case MUS_SOUNDFORGE: return("SoundForge"); break;
case MUS_TWINVQ: return("TwinVQ"); break;
case MUS_SDIF: return("IRCAM sdif"); break;
case MUS_NVF: return("Creative NVF"); break;
case MUS_OGG: return("Ogg Vorbis"); break;
case MUS_FLAC: return("Flac"); break;
case MUS_SPEEX: return("Speex"); break;
case MUS_MPEG: return("mpeg"); break;
case MUS_SHORTEN: return("shorten"); break;
case MUS_TTA: return("tta"); break;
case MUS_WAVPACK: return("wavpack"); break;
default: return("unsupported"); break;
}
}
const char *mus_data_format_name(int format)
{
switch (format)
{
case MUS_BSHORT: return("big endian short (16 bits)"); break;
case MUS_MULAW: return("mulaw (8 bits)"); break;
case MUS_BYTE: return("signed byte (8 bits)"); break;
case MUS_BFLOAT: return("big endian float (32 bits)"); break;
case MUS_BFLOAT_UNSCALED: return("big endian float (32 bits, unscaled)"); break;
case MUS_BINT: return("big endian int (32 bits)"); break;
case MUS_ALAW: return("alaw (8 bits)"); break;
case MUS_UBYTE: return("unsigned byte (8 bits)"); break;
case MUS_B24INT: return("big endian int (24 bits)"); break;
case MUS_BDOUBLE: return("big endian double (64 bits)"); break;
case MUS_BDOUBLE_UNSCALED: return("big endian double (64 bits, unscaled)"); break;
case MUS_LSHORT: return("little endian short (16 bits)"); break;
case MUS_LINT: return("little endian int (32 bits)"); break;
case MUS_LFLOAT: return("little endian float (32 bits)"); break;
case MUS_LDOUBLE: return("little endian double (64 bits)"); break;
case MUS_LFLOAT_UNSCALED: return("little endian float (32 bits, unscaled)"); break;
case MUS_LDOUBLE_UNSCALED: return("little endian double (64 bits, unscaled)"); break;
case MUS_UBSHORT: return("unsigned big endian short (16 bits)"); break;
case MUS_ULSHORT: return("unsigned little endian short (16 bits)"); break;
case MUS_L24INT: return("little endian int (24 bits)"); break;
case MUS_BINTN: return("normalized big endian int (32 bits)"); break;
case MUS_LINTN: return("normalized little endian int (32 bits)"); break;
default: return("unknown"); break;
}
}
const char *mus_data_format_short_name(int format)
{
switch (format)
{
case MUS_BSHORT: return("short int"); break;
case MUS_MULAW: return("mulaw"); break;
case MUS_BYTE: return("signed byte"); break;
case MUS_BFLOAT: return("float"); break;
case MUS_BFLOAT_UNSCALED: return("float unscaled)"); break;
case MUS_BINT: return("int"); break;
case MUS_ALAW: return("alaw"); break;
case MUS_UBYTE: return("unsigned byte"); break;
case MUS_B24INT: return("24-bit int"); break;
case MUS_BDOUBLE: return("double"); break;
case MUS_BDOUBLE_UNSCALED: return("double unscaled"); break;
case MUS_LSHORT: return("short int"); break;
case MUS_LINT: return("int"); break;
case MUS_LFLOAT: return("float"); break;
case MUS_LDOUBLE: return("double"); break;
case MUS_LFLOAT_UNSCALED: return("float unscaled"); break;
case MUS_LDOUBLE_UNSCALED: return("double unscaled"); break;
case MUS_UBSHORT: return("unsigned short"); break;
case MUS_ULSHORT: return("unsigned short"); break;
case MUS_L24INT: return("24-bit int"); break;
case MUS_BINTN: return("normalized int"); break;
case MUS_LINTN: return("normalized int"); break;
default: return("unknown"); break;
}
}
#if HAVE_RUBY
#define TO_LANG(Str) strdup(xen_scheme_constant_to_ruby(Str))
#else
#define TO_LANG(Str) Str
#endif
char *mus_header_type_to_string(int type)
{
switch (type)
{
case MUS_NEXT: return(TO_LANG(S_mus_next));
case MUS_AIFF: return(TO_LANG(S_mus_aiff));
case MUS_AIFC: return(TO_LANG(S_mus_aifc));
case MUS_RIFF: return(TO_LANG(S_mus_riff));
case MUS_NIST: return(TO_LANG(S_mus_nist));
case MUS_IRCAM: return(TO_LANG(S_mus_ircam));
case MUS_RAW: return(TO_LANG(S_mus_raw));
case MUS_BICSF: return(TO_LANG(S_mus_bicsf));
case MUS_VOC: return(TO_LANG(S_mus_voc));
case MUS_SVX: return(TO_LANG(S_mus_svx));
case MUS_SOUNDFONT: return(TO_LANG(S_mus_soundfont));
}
return(NULL);
}
char *mus_data_format_to_string(int format)
{
switch (format)
{
case MUS_BSHORT: return(TO_LANG(S_mus_bshort));
case MUS_LSHORT: return(TO_LANG(S_mus_lshort));
case MUS_MULAW: return(TO_LANG(S_mus_mulaw));
case MUS_ALAW: return(TO_LANG(S_mus_alaw));
case MUS_BYTE: return(TO_LANG(S_mus_byte));
case MUS_UBYTE: return(TO_LANG(S_mus_ubyte));
case MUS_BFLOAT: return(TO_LANG(S_mus_bfloat));
case MUS_LFLOAT: return(TO_LANG(S_mus_lfloat));
case MUS_BINT: return(TO_LANG(S_mus_bint));
case MUS_LINT: return(TO_LANG(S_mus_lint));
case MUS_BINTN: return(TO_LANG(S_mus_bintn));
case MUS_LINTN: return(TO_LANG(S_mus_lintn));
case MUS_B24INT: return(TO_LANG(S_mus_b24int));
case MUS_L24INT: return(TO_LANG(S_mus_l24int));
case MUS_BDOUBLE: return(TO_LANG(S_mus_bdouble));
case MUS_LDOUBLE: return(TO_LANG(S_mus_ldouble));
case MUS_UBSHORT: return(TO_LANG(S_mus_ubshort));
case MUS_ULSHORT: return(TO_LANG(S_mus_ulshort));
case MUS_BDOUBLE_UNSCALED: return(TO_LANG(S_mus_bdouble_unscaled));
case MUS_LDOUBLE_UNSCALED: return(TO_LANG(S_mus_ldouble_unscaled));
case MUS_BFLOAT_UNSCALED: return(TO_LANG(S_mus_bfloat_unscaled));
case MUS_LFLOAT_UNSCALED: return(TO_LANG(S_mus_lfloat_unscaled));
}
return(NULL);
}
static const char *any_data_format_name(int sndlib_format)
{
if (MUS_DATA_FORMAT_OK(sndlib_format))
return(mus_data_format_name(sndlib_format));
else return(mus_header_original_format_name(mus_header_original_format(),
mus_header_type()));
}
#define SEEK_FILE_LENGTH(File) lseek(File, 0L, SEEK_END)
static int read_bicsf_header(const char *filename, int chan);
/* ------------------------------------ NeXT (or Sun) --------------------------------
*
* 0: ".snd"
* 4: data_location (bytes) (not necessarily word aligned on Sun)
* 8: data_size (bytes) -- sometimes incorrect ("advisory")
* 12: data format indicator -- see below
* 16: srate (int)
* 20: chans
* 24: comment start
*
* in an AFsp file, the first 4 bytes of the comment are "AFsp",
* for bicsf, the integer at 28 is 107364 or 107415
*
* on NeXTStep, always big-endian. ".snd"==0x2e736e64 on big-endian machines.
*
* formats are:
* 0 unspecified, 1 mulaw_8, 2 linear_8, 3 linear_16, 4 linear_24, 5 linear_32, 6 float,
* 7 double, 8 indirect, 9 nested, 10 dsp_core, 11 dsp_data_8, 12 dsp_data_16, 13 dsp_data_24,
* 14 dsp_data_32, 16 display, 17 mulaw_squelch, 18 emphasized, 19 compressed, 20 compressed_emphasized
* 21 dsp_commands, 22 dsp_commands_samples, 23 adpcm_g721, 24 adpcm_g722, 25 adpcm_g723,
* 26 adpcm_g723_5, 27 alaw_8, 28 aes, 29 delat_mulaw_8
* internal Snd(lib)-only formats:
* 30: mus_lint, 31: mus_lfloat,
* 32: mus_bintn, 33: mus_lintn,
* 34: mus_ldouble and others... (added by me for Snd internal use)
*/
/* according to the file /usr/share/magic, the DECN versions were little endian */
static int read_next_header(const char *filename, int chan)
{
int maybe_bicsf, err = MUS_NO_ERROR, i;
type_specifier = mus_char_to_uninterpreted_int((unsigned char *)hdrbuf);
data_location = mus_char_to_bint((unsigned char *)(hdrbuf + 4));
if (data_location < 24) return(mus_error(MUS_HEADER_READ_FAILED, "%s: data location: " OFF_TD "?", filename, data_location));
data_size = mus_char_to_bint((unsigned char *)(hdrbuf + 8));
/* can be bogus -- fixup if possible */
true_file_length = SEEK_FILE_LENGTH(chan);
if ((data_size <= 24) || (data_size > true_file_length))
data_size = (true_file_length - data_location);
else
{
if (true_file_length > (off_t)(1 << 31))
data_size = true_file_length - data_location; /* assume size field overflowed 32 bits */
}
original_data_format = mus_char_to_bint((unsigned char *)(hdrbuf + 12));
switch (original_data_format)
{
case 1: data_format = MUS_MULAW; break;
case 2: data_format = MUS_BYTE; break; /* some sound files assume MUS_UBYTE here! (NAS from 1994 X11R6 contrib) */
case 3: data_format = MUS_BSHORT; break;
case 4: data_format = MUS_B24INT; break;
case 5: data_format = MUS_BINT; break;
case 6: data_format = MUS_BFLOAT; break;
case 7: data_format = MUS_BDOUBLE; break;
case 18: data_format = MUS_BSHORT; break; /* "emphasized": Xavier Serra's de-emphasis filter: y(n) = x(n) + .9 y(n-1) */
case 27: data_format = MUS_ALAW; break;
case 30: data_format = MUS_LINT; break; /* from here on, for Snd's internal benefit -- these are probably not used elsewhere */
case 31: data_format = MUS_LFLOAT; break;
case 32: data_format = MUS_BINTN; break;
case 33: data_format = MUS_LINTN; break;
case 34: data_format = MUS_LDOUBLE; break;
case 35: data_format = MUS_ULSHORT; break;
case 36: data_format = MUS_UBSHORT; break;
case 37: data_format = MUS_LFLOAT_UNSCALED; break;
case 38: data_format = MUS_BFLOAT_UNSCALED; break;
case 39: data_format = MUS_LDOUBLE_UNSCALED; break;
case 40: data_format = MUS_BDOUBLE_UNSCALED; break;
case 41: data_format = MUS_LSHORT; break;
case 42: data_format = MUS_L24INT; break;
case 43: data_format = MUS_UBYTE; break;
default: data_format = MUS_UNKNOWN; break;
}
srate = mus_char_to_bint((unsigned char *)(hdrbuf + 16));
chans = mus_char_to_bint((unsigned char *)(hdrbuf + 20));
comment_start = 0;
comment_end = 0;
for (i = 24; i < data_location - 1; i++)
if (hdrbuf[i] == '\0')
break;
else
{
if (hdrbuf[i] != ' ')
{
comment_start = i;
comment_end = data_location - 1;
break;
}
}
if (comment_end < comment_start) comment_end = comment_start;
maybe_bicsf = mus_char_to_bint((unsigned char *)(hdrbuf + 28));
if (maybe_bicsf == 107364) err = read_bicsf_header(filename, chan);
data_size = mus_bytes_to_samples(data_format, data_size);
return(err);
}
static int sndlib_format_to_next(int format)
{
switch (format)
{
case MUS_MULAW: return(1); break;
case MUS_BYTE: return(2); break;
case MUS_BSHORT: return(3); break;
case MUS_B24INT: return(4); break;
case MUS_BINT: return(5); break;
case MUS_BFLOAT: return(6); break;
case MUS_BDOUBLE: return(7); break;
case MUS_ALAW: return(27); break;
case MUS_LINT: return(30); break; /* see above */
case MUS_LFLOAT: return(31); break;
case MUS_BINTN: return(32); break;
case MUS_LINTN: return(33); break;
case MUS_LDOUBLE: return(34); break;
case MUS_ULSHORT: return(35); break;
case MUS_UBSHORT: return(36); break;
case MUS_LFLOAT_UNSCALED: return(37); break;
case MUS_BFLOAT_UNSCALED: return(38); break;
case MUS_LDOUBLE_UNSCALED: return(39); break;
case MUS_BDOUBLE_UNSCALED: return(40); break;
case MUS_LSHORT: return(41); break;
case MUS_L24INT: return(42); break;
case MUS_UBYTE: return(43); break;
default:
return(mus_error(MUS_UNSUPPORTED_DATA_FORMAT, "Next header: can't write data format: %d (%s)",
format,
any_data_format_name(format)));
break;
}
}
#if MUS_DEBUGGING
#define CHK_WRITE(Fd, Buf, Len) \
do { size_t bytes = 0; \
if (((Len) > 0) && ((bytes = write(Fd, Buf, Len)) == 0)) \
fprintf(stderr, "%s[%d]: header write error (wrote: %d != requested: %d)", c__FUNCTION__, __LINE__, (int)bytes, (int)(Len)); \
} while (0)
#define CHK_READ(Fd, Buf, Len) \
do { size_t bytes = 0; \
if (((Len) > 0) && ((bytes = read(Fd, Buf, (Len))) == 0)) \
fprintf(stderr, "%s[%d]: header read error (read %d != requested %d)", c__FUNCTION__, __LINE__, (int)bytes, (int)(Len)); \
} while (0)
#else
#define CHK_WRITE(Fd, Buf, Len) do {if (((Len) > 0) && (write(Fd, Buf, Len) == 0)) fprintf(stderr, "header write error");} while (0)
#define CHK_READ(Fd, Buf, Len) do {if (((Len) > 0) && (read(Fd, Buf, Len) == 0)) fprintf(stderr, "header read error");} while (0)
#endif
static void write_next_comment(int fd, const char *comment, int len, int loc)
{
if (len > 0)
CHK_WRITE(fd, (unsigned char *)comment, len);
len = loc - (len + 24);
if (len > 0)
{
unsigned char *combuf;
combuf = (unsigned char *)CALLOC(len, sizeof(char));
CHK_WRITE(fd, combuf, len);
FREE(combuf);
}
}
int mus_header_write_next_header(int chan, int wsrate, int wchans, int loc, int siz, int format, const char *comment, int len)
{
int i, j;
write_four_chars((unsigned char *)hdrbuf, I_DSND); /* ".snd" */
i = len / 4;
j = 24 + (4 * (i + 1));
if (loc < j) loc = j;
mus_bint_to_char((unsigned char *)(hdrbuf + 4), loc);
mus_bint_to_char((unsigned char *)(hdrbuf + 8), siz);
mus_bint_to_char((unsigned char *)(hdrbuf + 12), sndlib_format_to_next(format));
mus_bint_to_char((unsigned char *)(hdrbuf + 16), wsrate);
mus_bint_to_char((unsigned char *)(hdrbuf + 20), wchans);
CHK_WRITE(chan, hdrbuf, 24);
write_next_comment(chan, comment, len, loc);
data_location = loc;
return(MUS_NO_ERROR);
}
/* ------------------------------------ AIFF ------------------------------------
*
* 0: "FORM"
* 4: size (bytes)
* 8: "AIFF" or "AIFC" -- the latter includes compressed formats (list extended for 8.5 Sound.h)
*
* Thereafter the file is organized into "chunks", each chunk being
* a 4-byte identifer followed by an int (4-bytes) giving the chunk size
* not including the 8-byte header. AIFF data is signed. If the chunk
* size is odd, an extra (unaccounted-for) null byte is added at the end.
*
* The chunks we want are "COMM", "SSND", and "APPL".
*
* COMM: 0: chans
* 2: frames
* 6: bits per sample
* 8: srate as 80-bit IEEE float
* then if AIFC (not AIFF), 4 bytes giving compression id ("NONE"=not compressed)
* followed by Pascal string giving long name of compression type
*
* SSND: 0: data location (offset within SSND chunk)
*
* Other chunks include: ANNO: a comment, INST: loop control, MARK: marker, MIDI: midi,
* COMT: comment (max 65536 chars), NAME: sound name, AUTH: author's name
* (c), AESD: recording data, APPL: application specific stuff
* "MARK" size short-#marks {marks} -- latter are short-ID long-position pstring-name.
* "INST" size chars[baseNote detune lowNote highNote lowVelocity HighVelocity] short-gain loops[sustain release]
* loop: short-playMode marker-begin marker-end (signed?) shorts)
* playMode: 0 no loop, 1 forward loop, 2 forward/backward loop
* chars are MIDI data (detune is in cents)
* "MIDI" size MIDI-data...
* "AESD" size AES Channel Status Data (24 bytes as specified by AES)
* see "AES: Guidelines for the use of the AES3 interface"
* byte 0: bit 0: 0 = consumer, 1 = pro
* bit 1: 0 = audio, 1 = non-audio
* bits 2:4: emphasis: 0:none, 4:none, 6:CD, 7:CCITT J17
* bits 6:7: srate: 00 = 48KHz, 01 = 48, 10 = 44.1, 11 = 32
* byte 1: bits 0:3: chans: 2:mono, else stereo
* byte 2 for word size stuff (always ends up 16-bit): bits 3-5 = sample length where 4 = 16-bit
* byte 3: multi-channels modes, 4: AES sync ref, 5:unused, 6-9:ASCII source ID, 10-13:ASCII destination ID
* byte 14-17:local sample addr, 18-21:time of day addr, then CRC checks
* "APPL" size signature data
* "COMT" size short-#comments {comments} -- the latter are long-time marker short-text-length char-text
* time is in seconds since 1-Jan-1904
* "NAME"/"AUTH"/"(c) "/"ANNO" size char-name
* "FVER" size(4) AIFC-format-version -- currently always 0xA2805140
* "SAXL" -- a desperate kludge to get around Apple's own compression schemes!
*
* always big-endian
* There was also (briefly) an AIFS file, now deprecated.
*/
/* ieee-80 conversions -- design by committee! */
/* this code taken from CSound sources -- apparently originally written by Malcolm Slaney at Apple */
#define ULPOW2TO31 ((unsigned int)0x80000000)
#define DPOW2TO31 ((double)2147483648.0) /* 2^31 */
static double myUlongToDouble(unsigned int ul)
{
double val;
if(ul & ULPOW2TO31) val = DPOW2TO31 + (ul & (~ULPOW2TO31));
else val = ul;
return val;
}
static unsigned int myDoubleToUlong(double val)
{
unsigned int ul;
if(val < DPOW2TO31) ul = (unsigned int)val;
else ul = ULPOW2TO31 | (unsigned int)(val-DPOW2TO31);
return ul;
}
static double ieee_80_to_double(unsigned char *p)
{
unsigned char sign;
short lexp = 0;
unsigned int mant1 = 0;
unsigned int mant0 = 0;
lexp = *p++; lexp <<= 8; lexp |= *p++; sign = (lexp & 0x8000) ? 1 : 0; lexp &= 0x7FFF;
mant1 = *p++; mant1 <<= 8; mant1 |= *p++; mant1 <<= 8; mant1 |= *p++; mant1 <<= 8; mant1 |= *p++;
mant0 = *p++; mant0 <<= 8; mant0 |= *p++; mant0 <<= 8; mant0 |= *p++; mant0 <<= 8; mant0 |= *p++;
if(mant1 == 0 && mant0 == 0 && lexp == 0 && sign == 0)
return 0.0;
else
{
double val;
val = myUlongToDouble(mant0) * pow(2.0, -63.0);
val += myUlongToDouble(mant1) * pow(2.0, -31.0);
val *= pow(2.0, ((double) lexp) - 16383.0);
return sign ? -val : val;
}
}
static void double_to_ieee_80(double val, unsigned char *p)
{
short lexp = 0;
unsigned char sign = 0;
unsigned int mant1 = 0;
unsigned int mant0 = 0;
if(val < 0.0) { sign = 1; val = -val; }
if(val != 0.0) /* val identically zero -> all elements zero */
{
lexp = (short)(log(val) / log(2.0) + 16383.0);
val *= pow(2.0, 31.0 + 16383.0 - (double)lexp);
mant1 = myDoubleToUlong(val);
val -= myUlongToDouble(mant1);
val *= pow(2.0, 32.0);
mant0 = myDoubleToUlong(val);
}
*p++ = ((sign << 7) | (lexp >> 8)); *p++ = 0xFF & lexp;
*p++ = 0xFF & (mant1 >> 24); *p++ = 0xFF & (mant1 >> 16); *p++ = 0xFF & (mant1 >> 8); *p++ = 0xFF & (mant1);
*p++ = 0xFF & (mant0 >> 24); *p++ = 0xFF & (mant0 >> 16); *p++ = 0xFF & (mant0 >> 8); *p++ = 0xFF & (mant0);
}
static off_t update_form_size, update_frames_location, update_ssnd_location;
static int seek_and_read(int chan, unsigned char *buf, off_t offset, int nbytes)
{
if (offset < 0) return(-1);
lseek(chan, offset, SEEK_SET);
return(read(chan, buf, nbytes));
}
static int read_aiff_marker(int m, unsigned char *buf)
{
int psize;
marker_ids[m] = mus_char_to_bshort((unsigned char *)buf);
marker_positions[m] = mus_char_to_bint((unsigned char *)(buf + 2));
psize = (int)buf[6] + 1;
if (psize & 1) psize++;
return(psize+6);
}
static int read_aiff_header(const char *filename, int chan, int overall_offset)
{
/* we know we have checked for FORM xxxx AIFF|AIFC when we arrive here */
/* as far as I can tell, the COMM block has the header data we seek, and the SSND block has the sound data */
int chunksize, chunkloc, i, j, ssnd_bytes = 0;
bool happy, got_comm = false;
off_t offset;
type_specifier = mus_char_to_uninterpreted_int((unsigned char *)(hdrbuf + 8 + overall_offset));
update_ssnd_location = 0;
chunkloc = 12 + overall_offset;
offset = 0;
for (i = 0; i < AUX_COMMENTS; i++) aux_comment_start[i] = 0;
data_format = MUS_BSHORT;
srate = 0;
chans = 0;
happy = true;
true_file_length = SEEK_FILE_LENGTH(chan);
update_form_size = mus_char_to_bint((unsigned char *)(hdrbuf + 4 + overall_offset)); /* should be file-size-8 unless there are multiple forms */
while (happy)
{
offset += chunkloc;
if (seek_and_read(chan, (unsigned char *)hdrbuf, offset, 32) <= 0)
{
if ((got_comm) && (data_location > 0))
{
mus_print("%s, aiff header: chunks confused at " OFF_TD "; will try to continue", filename, offset);
break;
}
return(mus_error(MUS_HEADER_READ_FAILED, "%s, aiff header: chunks confused at " OFF_TD , filename, offset));
}
chunksize = mus_char_to_bint((unsigned char *)(hdrbuf + 4));
if ((chunksize == 0) && /* can be empty data chunk */
(hdrbuf[0] == 0) && (hdrbuf[1] == 0) && (hdrbuf[2] == 0) && (hdrbuf[3] == 0))
break;
/* fprintf(stderr,"chunk: %c%c%c%c for %d\n", hdrbuf[0], hdrbuf[1], hdrbuf[2], hdrbuf[3], chunksize); */
if (match_four_chars((unsigned char *)hdrbuf, I_COMM))
{
int frames;
got_comm = true;
chans = mus_char_to_bshort((unsigned char *)(hdrbuf + 8));
frames = mus_char_to_ubint((unsigned char *)(hdrbuf + 10)); /* was bint 27-Jul-01 */
update_frames_location = 10 + offset;
original_data_format = mus_char_to_bshort((unsigned char *)(hdrbuf + 14));
if ((original_data_format % 8) != 0)
{
/* weird sizes are legal --
* these samples are left-justified (and zero padded on the right), so
* we can handle any bit size by rounding up to the nearest byte.
*/
original_data_format = 8 * (1 + (original_data_format >> 3));
}
if (original_data_format == 8) data_format = MUS_BYTE;
else if (original_data_format == 16) data_format = MUS_BSHORT;
else if (original_data_format == 24) data_format = MUS_B24INT;
else if (original_data_format == 32) data_format = MUS_BINT;
else if (original_data_format == 64) data_format = MUS_BDOUBLE;
else return(mus_error(MUS_HEADER_READ_FAILED, "%s: bits per sample: %d?", filename, mus_char_to_bshort((unsigned char *)(hdrbuf + 14))));
srate = (int)ieee_80_to_double((unsigned char *)(hdrbuf + 16));
/* if AIFC, compression type over-rides (possibly bogus) original_data_format */
if (type_specifier == mus_char_to_uninterpreted_int((unsigned const char *)I_AIFC))
{
/* some aifc files assume the compression field is a new and very weird chunk!! -- surely a bug? */
/* AIFF spec says COMM size is always 18, but this is amended in the newer AIFC spec */
if (chunksize == 18) chunksize += (5 + ((int)hdrbuf[30])); /* 5 = chunk header length in this case */
if ((!(match_four_chars((unsigned char *)(hdrbuf + 26), I_NONE))) &&
(!(match_four_chars((unsigned char *)(hdrbuf + 26), I_twos))))
{
original_data_format = mus_char_to_uninterpreted_int((unsigned char *)(hdrbuf + 26));
if ((match_four_chars((unsigned char *)(hdrbuf + 26), I_ALAW)) ||
(match_four_chars((unsigned char *)(hdrbuf + 26), I_alaw)))
data_format = MUS_ALAW;
else
{
if ((match_four_chars((unsigned char *)(hdrbuf + 26), I_ULAW)) ||
(match_four_chars((unsigned char *)(hdrbuf + 26), I_ulaw)))
data_format = MUS_MULAW;
else
{
if ((match_four_chars((unsigned char *)(hdrbuf + 26), I_sowt)) ||
(match_four_chars((unsigned char *)(hdrbuf + 26), I_ni23)))
{
/* Sound.h sez sowt is just 16-bit format */
if (data_format == MUS_BSHORT) data_format = MUS_LSHORT;
else if (data_format == MUS_B24INT) data_format = MUS_L24INT;
else if (data_format == MUS_BINT) data_format = MUS_LINT;
}
else
{
if (match_four_chars((unsigned char *)(hdrbuf + 26), I_raw_))
{
if (data_format == MUS_BYTE) data_format = MUS_UBYTE;
else if (data_format == MUS_BSHORT) data_format = MUS_UBSHORT;
}
else
{
if ((match_four_chars((unsigned char *)(hdrbuf + 26), I_fl32)) ||
(match_four_chars((unsigned char *)(hdrbuf + 26), I_FL32)))
data_format = MUS_BFLOAT;
else
{
if (match_four_chars((unsigned char *)(hdrbuf + 26), I_fl64))
data_format = MUS_BDOUBLE;
else
{
if (match_four_chars((unsigned char *)(hdrbuf + 26), I_ima4))
{
block_align = 34;
original_data_format = MUS_AIFF_IMA_ADPCM;
}
else
{
if (match_four_chars((unsigned char *)(hdrbuf + 26), I_in32))
data_format = MUS_BINT;
else
{
if (match_four_chars((unsigned char *)(hdrbuf + 26), I_in24))
data_format = MUS_B24INT;
else
{
/* others from Sound.h:
0x6D730002, -- Microsoft ADPCM - ACM code 2
0x6D730011, -- DVI/Intel IMA ADPCM - ACM code 17
'MAC3' -- MACE 3:1
'MAC6' -- MACE 6:1
'cdx4' -- CD/XA 4:1
'cdx2' -- CD/XA 2:1
'dvca' -- DV Audio
'QDMC' -- QDesign music
'QDM2' -- QDesign2 music
'Qclp' -- QUALCOMM PureVoice
0x6D730055 -- MPEG Layer 3, CBR only (pre QT4.1)
'.mp3' -- MPEG Layer 3, CBR & VBR (QT4.1 and later)
*/
data_format = MUS_UNKNOWN;
}
}
}
}
}
}
}
}
}
}
}
data_size = (frames * mus_bytes_per_sample(data_format) * chans);
}
else
{
if (match_four_chars((unsigned char *)hdrbuf, I_SSND))
{
if (data_location != 0) return(mus_error(MUS_HEADER_READ_FAILED, "%s: two SSND chunks found", filename));
update_ssnd_location = offset + 4;
data_location = mus_char_to_bint((unsigned char *)(hdrbuf + 8)) + offset + 16; /* Baroque! */
/* offset is where the hdrbuf is positioned in the file, the sound data offset itself is at loc+8 and the */
/* 0-based location of the sound data is at the end of the chunk = 16 (8 = header+4 = offset+4 = blocksize) */
/* the next int can be the block size if the data is block-aligned */
/* only one SSND per AIFF is allowed */
if (chunksize == 0) break; /* this may happen while pre-reading an in-progress output file for updating */
ssnd_bytes = offset + chunksize - data_location + 8;
}
else
{
if ((match_four_chars((unsigned char *)hdrbuf, I_ANNO)) ||
(match_four_chars((unsigned char *)hdrbuf, I_COMT)) ||
(match_four_chars((unsigned char *)hdrbuf, I_NAME)) ||
(match_four_chars((unsigned char *)hdrbuf, I_AUTH)))
{
j = 0;
for (i = 0; i < AUX_COMMENTS; i++)
if (aux_comment_start[i] == 0)
{
j = i;
break;
}
if (j >= AUX_COMMENTS)
{
mus_print("read_aiff_header: ran out of auxiliary comment space");
j = 0;
}
aux_comment_start[j] = offset + 8;
if (match_four_chars((unsigned char *)hdrbuf, I_COMT))
aux_comment_start[j] += 8; /* skip time stamp and markerId (not ID, I assume!) */
aux_comment_end[j] = offset + 7 + chunksize;
}
else
{
if (match_four_chars((unsigned char *)hdrbuf, I_APPL))
{
if (match_four_chars((unsigned char *)(hdrbuf + 8), I_MUS_))
{
/* my own chunk has the arbitrary length comment I use (actually the ASCII */
/* representation of a lisp program evaluated in the CLM package) to handle mix et al. */
/* It is nothing more than the actual string -- remember to pad to even length here. */
comment_start = offset + 12;
comment_end = comment_start + chunksize - 5;
}
else
{
if ((match_four_chars((unsigned char *)(hdrbuf + 8), I_SU7M)) ||
(match_four_chars((unsigned char *)(hdrbuf + 8), I_SU7R)))
{
mus_print("this is an SU700 ssp file?");
data_location = 512;
chans = 1;
/* actually SU7M and SU7R point to 2 chan data as separate chunks */
}
}
}
else
{
if (match_four_chars((unsigned char *)hdrbuf, I_INST))
{
base_note = hdrbuf[8];
base_detune = hdrbuf[9];
loop_modes[0] = mus_char_to_bshort((unsigned char *)(hdrbuf + 16));
loop_starts[0] = mus_char_to_bshort((unsigned char *)(hdrbuf + 18));
loop_ends[0] = mus_char_to_bshort((unsigned char *)(hdrbuf + 20));
loop_modes[1] = mus_char_to_bshort((unsigned char *)(hdrbuf + 22));
loop_starts[1] = mus_char_to_bshort((unsigned char *)(hdrbuf + 24));
loop_ends[1] = mus_char_to_bshort((unsigned char *)(hdrbuf + 26));
/* these are mark numbers */
}
else
{
if (match_four_chars((unsigned char *)hdrbuf, I_MARK))
{
int num_marks, m, moff, msize;
/* unsigned short #marks, each mark: id pos name (pstring damn it) */
num_marks = mus_char_to_ubshort((unsigned char *)(hdrbuf + 8));
if (num_marks > markers)
{
if (markers > 0)
{
if (marker_ids) FREE(marker_ids);
if (marker_positions) FREE(marker_positions);
}
markers = num_marks;
marker_ids = (int *)CALLOC(markers, sizeof(int));
marker_positions = (int *)CALLOC(markers, sizeof(int));
}
moff = 10;
for (m = 0; m < num_marks; m++)
{
if (seek_and_read(chan, (unsigned char *)hdrbuf, offset + moff, 8) > 0)
{
msize = read_aiff_marker(m, (unsigned char *)hdrbuf);
moff += msize;
}
}
}
}
}
}
}
}
chunkloc = (8 + chunksize);
if (chunksize & 1) chunkloc++; /* extra null appended to odd-length chunks */
if ((offset + chunkloc) >= update_form_size) happy = false;
}
if (!got_comm)
return(mus_error(MUS_HEADER_READ_FAILED, "%s: no COMM chunk", filename));
if (data_location == 0)
return(mus_error(MUS_HEADER_READ_FAILED, "%s: no SSND (data) chunk", filename));
if (data_size > true_file_length)
{
data_size = true_file_length - data_location;
if (data_size < 0) return(mus_error(MUS_HEADER_READ_FAILED, "%s: data_size = " OFF_TD "?", filename, data_size));
}
if ((data_size > ssnd_bytes) && (data_format != MUS_UNKNOWN))
data_size = ssnd_bytes;
data_size = mus_bytes_to_samples(data_format, data_size);
return(MUS_NO_ERROR);
}
static int sndlib_format_to_aiff_bits(int format)
{
switch (format)
{
case MUS_BSHORT: case MUS_LSHORT: case MUS_UBSHORT: case MUS_ULSHORT: return(16); break;
case MUS_B24INT: case MUS_L24INT: return(24); break;
case MUS_BINT: case MUS_LINT: case MUS_BFLOAT: case MUS_LFLOAT: return(32); break;
case MUS_BDOUBLE: case MUS_LDOUBLE: return(64); break;
case MUS_BYTE: case MUS_UBYTE: case MUS_MULAW: case MUS_ALAW: return(8); break;
default:
return(mus_error(MUS_UNSUPPORTED_DATA_FORMAT, "aiff header: can't write data format: %d (%s)",
format,
any_data_format_name(format)));
break;
}
}
static const char *sndlib_format_to_aifc_name(int format)
{
switch (format)
{
case MUS_BSHORT: case MUS_B24INT: case MUS_BINT: case MUS_BYTE: return((const char *)I_NONE); break; /* use in24 and in32? */
case MUS_LSHORT: case MUS_L24INT: case MUS_LINT: return((const char *)I_sowt); break; /* should this use ni23? */
case MUS_BFLOAT: return((const char *)I_fl32); break;
case MUS_BDOUBLE: return((const char *)I_fl64); break;
case MUS_UBYTE: case MUS_UBSHORT: return((const char *)I_raw_); break;
case MUS_MULAW: return((const char *)I_ulaw); break;
case MUS_ALAW: return((const char *)I_alaw); break;
default: return((const char *)I_NONE); break;
}
}
static int write_aif_header(int chan, int wsrate, int wchans, int siz, int format, const char *comment, int len, bool aifc_header)
{
/* we write the simplest possible AIFC header: AIFC | COMM | APPL-MUS_ if needed | SSND eof. */
/* the assumption being that we're going to be appending sound data once the header is out */
/* INST and MARK chunks added Jul-95 for various programs that expect them (MixView). */
int i, j, lenhdr, lenloop, curend, extra; /* set aifc to 0 to get old-style AIFF header */
char *str;
lenhdr = 0;
extra = 0;
curend = 0;
lenloop = 38;
if ((loop_modes[0] != 0) || (loop_modes[1] != 0)) lenloop = 42 + 28;
if (len != 0)
{
lenhdr = 12;
if ((len % 4) != 0)
extra = (4 - (len % 4));
}
write_four_chars((unsigned char *)hdrbuf, I_FORM);
if (aifc_header)
mus_bint_to_char((unsigned char *)(hdrbuf + 4), len + 30 + 16 + lenloop + siz + lenhdr + extra + 12 + 10);
else mus_bint_to_char((unsigned char *)(hdrbuf + 4), len + 30 + 16 + lenloop + siz + lenhdr + extra);
/*
* comment length + 4 for AIFF 18+8 for I_COMM info + 16 for I_SSND info + 38 for INST and MARK +
* siz for data + 12 for comment header if any + padding == total size - 8 (i.e. FORM header).
* INST+MARK (38) added 3-Jul-95 for Notam software compatibility
*/
if (aifc_header)
{
write_four_chars((unsigned char *)(hdrbuf + 8), I_AIFC);
CHK_WRITE(chan, hdrbuf, 12);
curend = 12;
write_four_chars((unsigned char *)hdrbuf, I_FVER);
mus_bint_to_char((unsigned char *)(hdrbuf + 4), 4);
mus_bint_to_char((unsigned char *)(hdrbuf + 8), 0xA2805140);
}
else write_four_chars((unsigned char *)(hdrbuf + 8), I_AIFF);
write_four_chars((unsigned char *)(hdrbuf + 12), I_COMM);
if (aifc_header)
mus_bint_to_char((unsigned char *)(hdrbuf + 16), 18 + 10);
else mus_bint_to_char((unsigned char *)(hdrbuf + 16), 18);
mus_bshort_to_char((unsigned char *)(hdrbuf + 20), (short)wchans);
if (wchans > 0)
mus_bint_to_char((unsigned char *)(hdrbuf + 22), siz / (wchans * mus_bytes_per_sample(format)));
mus_bshort_to_char((unsigned char *)(hdrbuf + 26), sndlib_format_to_aiff_bits(format));
double_to_ieee_80((double)wsrate, (unsigned char *)(hdrbuf + 28));
if (aifc_header)
{
str = (char *)sndlib_format_to_aifc_name(format);
write_four_chars((unsigned char *)(hdrbuf + 38), (const unsigned char *)str);
(*(unsigned char *)(hdrbuf + 42)) = 4; /* final pad null not accounted-for */
write_four_chars((unsigned char *)(hdrbuf + 43), (const unsigned char *)str);
(*(unsigned char *)(hdrbuf + 47)) = 0;
i = 48;
}
else i = 38;
if (len != 0)
{
if (aifc_header)
{
write_four_chars((unsigned char *)(hdrbuf + 48), I_APPL);
mus_bint_to_char((unsigned char *)(hdrbuf + 52), len + 4 + extra);
write_four_chars((unsigned char *)(hdrbuf + 56), I_MUS_);
i = 60;
}
else
{
write_four_chars((unsigned char *)(hdrbuf + 38), I_APPL);
mus_bint_to_char((unsigned char *)(hdrbuf + 42), len + 4 + extra);
write_four_chars((unsigned char *)(hdrbuf + 46), I_MUS_);
i = 50;
}
for (j = 0; j < len; j++)
{
if (i == HDRBUFSIZ)
{
curend += HDRBUFSIZ;
CHK_WRITE(chan, hdrbuf, HDRBUFSIZ);
i = 0;
}
hdrbuf[i] = comment[j];
i++;
}
if (extra != 0)
{
if ((i + extra) > HDRBUFSIZ)
{
curend += i;
CHK_WRITE(chan, hdrbuf, i);
i = 0;
}
for (j = 0; j < extra; j++)
{
hdrbuf[i] = 0;
i++;
}
}
}
curend += i;
CHK_WRITE(chan, hdrbuf, i);
if ((loop_modes[0] == 0) && (loop_modes[1] == 0))
{
write_four_chars((unsigned char *)hdrbuf, I_MARK); /* SoundHack includes a blank MARK chunk for some reason */
mus_bint_to_char((unsigned char *)(hdrbuf + 4), 2);
mus_bshort_to_char((unsigned char *)(hdrbuf + 8), 0);
write_four_chars((unsigned char *)(hdrbuf + 10), I_INST);
mus_bint_to_char((unsigned char *)(hdrbuf + 14), 20);
mus_bint_to_char((unsigned char *)(hdrbuf + 18), 0x3c00007f); /* base-note = middle C, detune = 0, lownote = 0, highnote = 0x7f */
mus_bint_to_char((unsigned char *)(hdrbuf + 22), 0x017f0000); /* lowvelocity = 1, highvelocity = 0x7f, gain = 0 */
mus_bint_to_char((unsigned char *)(hdrbuf + 26), 0); /* no loops */
mus_bint_to_char((unsigned char *)(hdrbuf + 30), 0);
mus_bint_to_char((unsigned char *)(hdrbuf + 34), 0);
CHK_WRITE(chan, hdrbuf, 38);
curend += 38;
}
else
{
write_four_chars((unsigned char *)hdrbuf, I_MARK);
mus_bint_to_char((unsigned char *)(hdrbuf + 4), 8 * 4 + 2); /* 2 for mark#, then 2:id + 4:pos + 2:pstr */
/* loop_info: 0..3 are markers positions (ids 1..4) */
mus_bshort_to_char((unsigned char *)(hdrbuf + 8), 4);
for (j = 0; j < 4; j++)
{
mus_bshort_to_char((unsigned char *)(hdrbuf + 10 + 8 * j), j + 1);
switch (j)
{
case 0: mus_bint_to_char((unsigned char *)(hdrbuf + 10 + 8 * j + 2), loop_starts[0]); break;
case 1: mus_bint_to_char((unsigned char *)(hdrbuf + 10 + 8 * j + 2), loop_ends[0]); break;
case 2: mus_bint_to_char((unsigned char *)(hdrbuf + 10 + 8 * j + 2), loop_starts[1]); break;
case 3: mus_bint_to_char((unsigned char *)(hdrbuf + 10 + 8 * j + 2), loop_ends[1]); break;
}
mus_bshort_to_char((unsigned char *)(hdrbuf + 10 + 8 * j + 6), 0);
}
CHK_WRITE(chan, hdrbuf, 42);
curend += 42;
write_four_chars((unsigned char *)hdrbuf, I_INST);
mus_bint_to_char((unsigned char *)(hdrbuf + 4), 20);
mus_bint_to_char((unsigned char *)(hdrbuf + 8), 0x3c00007f);
mus_bint_to_char((unsigned char *)(hdrbuf + 12), 0x017f0000);
hdrbuf[8] = (unsigned char)(base_note);
hdrbuf[9] = (unsigned char)(base_detune);
mus_bshort_to_char((unsigned char *)(hdrbuf + 16), loop_modes[0]);
mus_bshort_to_char((unsigned char *)(hdrbuf + 18), 1);
mus_bshort_to_char((unsigned char *)(hdrbuf + 20), 2);
mus_bshort_to_char((unsigned char *)(hdrbuf + 22), loop_modes[1]);
mus_bshort_to_char((unsigned char *)(hdrbuf + 24), 3);
mus_bshort_to_char((unsigned char *)(hdrbuf + 26), 4);
CHK_WRITE(chan, hdrbuf, 28);
curend += 28;
}
write_four_chars((unsigned char *)(hdrbuf), I_SSND);
mus_bint_to_char((unsigned char *)(hdrbuf + 4), siz + 8);
mus_bint_to_char((unsigned char *)(hdrbuf + 8), 0); /* "offset" */
mus_bint_to_char((unsigned char *)(hdrbuf + 12), 0); /* "blocksize " */
CHK_WRITE(chan, hdrbuf, 16);
data_location = 16 + curend;
return(MUS_NO_ERROR);
}
char *mus_header_aiff_aux_comment(const char *name, off_t *starts, off_t *ends)
{
/* AIFC: look for aux comments (ANNO chunks) */
char *sc = NULL;
if ((starts) && (starts[0] != 0))
{
off_t full_len;
int fd, i;
fd = mus_file_open_read(name);
if (fd == -1) return(NULL);
full_len = 0;
for (i = 0; i < AUX_COMMENTS; i++)
if ((starts[i] > 0) &&
(starts[i] < ends[i]))
full_len += (ends[i] - starts[i] + 3);
if (full_len > 0)
{
off_t sc_len;
sc = (char *)CALLOC(full_len, sizeof(char));
sc_len = 0;
for (i = 0; i < AUX_COMMENTS; i++)
{
off_t start, end, len;
start = starts[i];
end = ends[i];
if ((start > 0) && (start < end))
{
int j;
len = end - start + 1;
lseek(fd, start, SEEK_SET);
CHK_READ(fd, (char *)(sc + sc_len), len);
for (j = 0; j < len; j++)
if (sc[j + sc_len] == 0)
sc[j + sc_len] = ' ';
sc_len += len;
sc[sc_len++] = '\n';
}
}
}
CLOSE(fd, name);
}
return(sc);
}
/* ------------------------------------ RIFF (wave) ------------------------------------
*
* see ftp.microsoft.com:/SoftLib/MSLFILES/MDRK.EXE (also MMSYSTEM.H and MMREG.H)
* ftp://ftp.isi.edu/in-notes/rfc2361.txt
*
* 0: "RIFF" (little-endian) or "RIFX" (big-endian)
* 4: size
* 8: "WAVE" ("RMID" = midi data, others are AVI, CPPO, ACON, DLS? etc)
* AVI chunk can include audio data
*
* rest very similar to AIFF (odd-sized chunks are padded)
*
* fmt 0: format code (see below)
* 2: chans
* 4: srate (long)
* 8: average rate "for buffer estimation"
* 12: alignment "block size"
* 14: data size (bits per sample) (PCM only)
* 16: count (bytes) of extra info in the header (i.e. trailing info added to this basic header)
* 20: samples per block (short) in dvi_adpcm
*
* formats are: 0: unknown, 1: PCM, 2: ADPCM, 3: IEEE float, 4: VSELP, 5: IBM_CVSD, 6: alaw, 7: mulaw
* 0x10: OKI_ADPCM, 0x11: DVI_ADPCM, 0x12: MediaSpace_ADPCM,
* 0x13: Sierra_ADPCM, 0x14: G723_ADPCM, 0x15: DIGISTD, 0x16: DIGIFIX, 0x17: Dialogic ADPCM,
* 0x18: Mediavision ADPCM, 0x19: HP cu codec,
* 0x20: Yamaha_ADPCM, 0x21: SONARC, 0x22: DSPGroup_TrueSpeech
* 0x23: EchoSC1, 0x24: AudioFile_AF36, 0x25: APTX, 0x26: AudioFile_AF10
* 0x27: prosody 1612, 0x28: lrc,
* 0x30: Dolby_Ac2, 0x31: GSM610, 0x32: MSN audio codec, 0x33: Antext_ADPCM, 0x34: Control_res_vqlpc,
* 0x35: DIGIREAL, 0x36: DIGIADPCM, 0x37: Control_res_cr10, 0x38: NMS_VBXADPCM, 0x39:Roland rdac,
* 0x3a: echo sc3, 0x3b: Rockwell adpcm, 0x3c: Rockwell digitalk codec, 0x3d: Xebec,
* 0x40: G721_ADPCM, 0x41: G728 CELP, 0x42: MS G723, 0x50: MPEG,
* 0x52: RT24, 0x53: PAC, 0x55: Mpeg layer 3, 0x59: Lucent G723, 0x60: Cirrus,
* 0x61: ESS Tech pcm, 0x62: voxware (obsolete), 0x63: canopus atrac,
* 0x64: G726, 0x65: G722, 0x66: DSAT, 0x67: DSAT display,
* 0x69: voxware (obsolete), 0x70: voxware ac8 (obsolete), 0x71: voxware ac10 (obsolete),
* 0x72: voxware ac16 (obsolete), 0x73: voxware ac20 (obsolete), 0x74: voxware rt24,
* 0x75: voxware rt29, 0x76: voxware rt29hw (obsolete), 0x77: voxware vr12 (obsolete),
* 0x78: voxware vr18 (obsolete), 0x79: voxware tq40 (obsolete),
* 0x80: softsound, 0x81: voxware tq60 (obsolete), 0x82: MS RT24, 0x83: G729A,
* 0x84: MVI_MVI2, 0x85: DF G726, 0x86: DF GSM610, 0x88: isaudio, 0x89: onlive,
* 0x91: sbc24, 0x92: dolby ac3 spdif, 0x97: zyxel adpcm, 0x98: philips lpcbb,
* 0x99: packed, 0x100: rhetorex adpcm,
* 0x101: Irat, 0x102: IBM_alaw?, 0x103: IBM_ADPCM?,
* 0x111: vivo G723, 0x112: vivo siren, 0x123: digital g273
* 0x200: Creative_ADPCM, 0x202: Creative fastspeech 8, 0x203: Creative fastspeech 10,
* 0x220: quarterdeck, 0x300: FM_TOWNS_SND, 0x400: BTV digital, 0x680: VME vmpcm,
* 0x1000: OLIGSM, 0x1001: OLIADPCM, 0x1002: OLICELP, 0x1003: OLISBC, 0x1004: OLIOPR
* 0x1100: LH codec, 0x1400: Norris, 0x1401: isaudio, 0x1500: Soundspace musicompression, 0x2000: DVM
* (see http://www.microsoft.com/asf/resources/draft-ietf-fleischman-codec-subtree-00.txt)
* and new: 0xFFFE: wave_format_extensible: bits/sample, mapping, 16 byte guid, 1st 2 bytes are code as above
*
* RIFF and LIST chunks have nested chunks. Registered chunk names include:
* LIST with subchunks, one of which can be:
* INFO itself containing:
* IARL: archival location, IART: artist, ICMS: commissioned, ICMT: comment, ICOP: copyright, ICRD: creation date,
* ICRP: uh...cropped, IDIM: dimensions, IDPI: dpi, IENG: engineer, IGNR: genre, IKEY: keywords, ILGT: lightness,
* IMED: medium, INAM: name, IPLT: palette, IPRD: product, ISBJ: subject, ISFT: software, ISHP: sharpness,
* ISRC: source, ISRF: source form, ITCH: technician, ISMP: SMPTE time code, IDIT: digitization time
*
* data chunk has the samples
* other (currently ignored) chunks are wavl = waveform data, fact, cues of some sort, slnt = silence,
* plst = playlist, adtl = associated data list, labl = cue label, note = cue comments,
* ltxt = text associated with data segment (cue), file, DISP = displayable object,
* JUNK = outdated info, PAD = padding, etc
* fact chunk generally has number of samples (used in compressed files)
*/
static int wave_to_sndlib_format(int osf, int bps, bool little)
{
switch (osf)
{
case 1:
switch (bps)
{
case 8: return(MUS_UBYTE); break;
case 16: if (little) return(MUS_LSHORT); else return(MUS_BSHORT); break;
case 32: if (little) return(MUS_LINT); else return(MUS_BINT); break;
case 24: if (little) return(MUS_L24INT); else return(MUS_B24INT); break;
default: return(MUS_UBYTE); break;
}
break;
case 3:
if (little)
{
if (bps == 64)
return(MUS_LDOUBLE);
else return(MUS_LFLOAT);
}
else
{
if (bps == 64)
return(MUS_BDOUBLE);
else return(MUS_BFLOAT);
}
break;
case 6: if (bps == 8) return(MUS_ALAW); break;
case 7: if (bps == 8) return(MUS_MULAW); break;
/* IBM mulaw follows G711 specs like other versions (this info direct from IBM) */
case 0x101: return(MUS_MULAW); break;
case 0x102: return(MUS_ALAW); break;
}
return(MUS_UNKNOWN);
}
static int read_riff_header(const char *filename, int chan)
{
/* we know we have checked for RIFF xxxx WAVE when we arrive here */
int chunksize, chunkloc, i;
bool little, got_fmt = false;
off_t offset;
little = true;
if (match_four_chars((unsigned char *)hdrbuf, I_RIFX)) little = false; /* big-endian data in this case, but I've never seen one */
little_endian = little;
type_specifier = mus_char_to_uninterpreted_int((unsigned char *)(hdrbuf + 8));
chunkloc = 12;
offset = 0;
data_format = MUS_UNKNOWN;
srate = 0;
chans = 0;
fact_samples = 0;
bits_per_sample = 0;
for (i = 0; i < AUX_COMMENTS; i++) aux_comment_start[i] = 0;
true_file_length = SEEK_FILE_LENGTH(chan);
update_form_size = big_or_little_endian_int((unsigned char *)(hdrbuf + 4), little);
while (true)
{
offset += chunkloc;
if (offset >= true_file_length) break;
if (seek_and_read(chan, (unsigned char *)hdrbuf, offset, 64) <= 0) break;
chunksize = big_or_little_endian_int((unsigned char *)(hdrbuf + 4), little);
if ((chunksize == 0) && /* can be empty data chunk */
(hdrbuf[0] == 0) && (hdrbuf[1] == 0) && (hdrbuf[2] == 0) && (hdrbuf[3] == 0))
break;
if (match_four_chars((unsigned char *)hdrbuf, I_fmt_))
{
/*
* 8: short format code --1 = PCM for example
* 10: short chans --1
* 12: long rate --48000 (0xbb80)
* 16: long ave rate --65655 (0x10077)
* 20: short align --2
* 22: short data size (bits) --16
* 24: bytes of extra
* ... some extra data dependent on format
*
* R I F F # # # # W A V E f m t sp
* 5249 4646 f851 0500 5741 5645 666d 7420
* e40f 0000 0100 0100 80bb 0000 0077 0100
* 0200 1000 0000 0000 0000 0000 0000 0000
*
* #x000551f8 = 348664 = size in bytes - 8
* #x00000fe4 = 4068 [fmt_ chunk size?]
*/
got_fmt = true;
original_data_format = big_or_little_endian_short((unsigned char *)(hdrbuf + 8), little);
chans = big_or_little_endian_short((unsigned char *)(hdrbuf + 10), little);
srate = big_or_little_endian_int((unsigned char *)(hdrbuf + 12), little);
update_frames_location = 12 + offset;
block_align = big_or_little_endian_short((unsigned char *)(hdrbuf + 20), little);
bits_per_sample = big_or_little_endian_short((unsigned char *)(hdrbuf + 22), little);
if (original_data_format == -2) /* 0xFFFE = "extensible" : short size=22, short bits, long chanmap, short format */
original_data_format = big_or_little_endian_short((unsigned char *)(hdrbuf + 24 + 8), little);
data_format = wave_to_sndlib_format(original_data_format, bits_per_sample, little);
}
else
{
if ((match_four_chars((unsigned char *)hdrbuf, I_data)) && (data_location == 0))
{
update_ssnd_location = offset + 4;
data_location = offset + 8;
data_size = big_or_little_endian_uint((unsigned char *)(hdrbuf + 4), little); /* was int 27-Jul-01 */
if (chunksize == 0) break; /* see aiff comment */
}
else
{
if (match_four_chars((unsigned char *)hdrbuf, I_fact))
{
fact_samples = big_or_little_endian_int((unsigned char *)(hdrbuf + 8), little);
}
else
{
if (match_four_chars((unsigned char *)hdrbuf, I_inst))
{
base_note = hdrbuf[8];
base_detune = hdrbuf[9];
/* rest is gain low-note high-note low-velocity high-velocity */
}
else
{
if (match_four_chars((unsigned char *)hdrbuf, I_clm_))
{
comment_start = offset + 8;
comment_end = comment_start + chunksize - 1; /* end of comment not start of next chunk */
}
else
{
if ((match_four_chars((unsigned char *)hdrbuf, I_LIST)) &&
(match_four_chars((unsigned char *)(hdrbuf + 8), I_INFO)))
{
aux_comment_start[0] = offset + 8;
aux_comment_end[0] = offset + 8 + chunksize - 1;
}
}
}
}
}
}
chunkloc = (8 + chunksize);
if (chunksize & 1) chunkloc++; /* extra null appended to odd-length chunks */
}
if (!got_fmt)
return(mus_error(MUS_HEADER_READ_FAILED, "%s: no fmt chunk?", filename));
if (data_location == 0)
return(mus_error(MUS_HEADER_READ_FAILED, "%s: no data chunk?", filename));
if (data_size > true_file_length)
{
data_size = true_file_length - data_location;
if (data_size < 0) return(mus_error(MUS_HEADER_READ_FAILED, "%s: data_size = " OFF_TD "?", filename, data_size));
}
data_size = mus_bytes_to_samples(data_format, data_size);
return(MUS_NO_ERROR);
}
static int write_riff_header(int chan, int wsrate, int wchans, int siz, int format, const char *comment, int len)
{
int i, j, lenhdr, extra;
off_t offset, curend;
lenhdr = 0;
extra = 0;
if (len != 0)
{
lenhdr = 12;
if ((len % 4) != 0)
extra = (4 - (len % 4));
}
write_four_chars((unsigned char *)hdrbuf, I_RIFF);
mus_lint_to_char((unsigned char *)(hdrbuf + 4), len + 36 + siz + lenhdr + extra);
write_four_chars((unsigned char *)(hdrbuf + 8), I_WAVE);
write_four_chars((unsigned char *)(hdrbuf + 12), I_fmt_);
mus_lint_to_char((unsigned char *)(hdrbuf + 16), 24 - 8);
switch (format)
{
case MUS_MULAW:
mus_lshort_to_char((unsigned char *)(hdrbuf + 20), 7);
mus_lshort_to_char((unsigned char *)(hdrbuf + 34), 8);
break;
case MUS_ALAW:
mus_lshort_to_char((unsigned char *)(hdrbuf + 20), 6);
mus_lshort_to_char((unsigned char *)(hdrbuf + 34), 8);
break;
case MUS_UBYTE:
mus_lshort_to_char((unsigned char *)(hdrbuf + 20), 1);
mus_lshort_to_char((unsigned char *)(hdrbuf + 34), 8);
break;
case MUS_LSHORT:
mus_lshort_to_char((unsigned char *)(hdrbuf + 20), 1);
mus_lshort_to_char((unsigned char *)(hdrbuf + 34), 16);
break;
case MUS_L24INT:
mus_lshort_to_char((unsigned char *)(hdrbuf + 20), 1);
mus_lshort_to_char((unsigned char *)(hdrbuf + 34), 24);
break;
case MUS_LINT:
mus_lshort_to_char((unsigned char *)(hdrbuf + 20), 1);
mus_lshort_to_char((unsigned char *)(hdrbuf + 34), 32);
break;
case MUS_LFLOAT:
mus_lshort_to_char((unsigned char *)(hdrbuf + 20), 3);
mus_lshort_to_char((unsigned char *)(hdrbuf + 34), 32);
break;
case MUS_LDOUBLE:
mus_lshort_to_char((unsigned char *)(hdrbuf + 20), 3);
mus_lshort_to_char((unsigned char *)(hdrbuf + 34), 64);
break;
default:
return(mus_error(MUS_UNSUPPORTED_DATA_FORMAT, "riff header: can't write data format: %d (%s)",
format,
any_data_format_name(format)));
break;
}
mus_lshort_to_char((unsigned char *)(hdrbuf + 22), (short)wchans);
mus_lint_to_char((unsigned char *)(hdrbuf + 24), wsrate);
mus_lint_to_char((unsigned char *)(hdrbuf + 28), wsrate * wchans * mus_bytes_per_sample(format)); /* added chans 10-Mar-99 */
mus_lshort_to_char((unsigned char *)(hdrbuf + 32), (short)(wchans * mus_bytes_per_sample(format)));
offset = 36;
i = 36;
curend = 0;
if (len != 0)
{
offset += len + 12;
write_four_chars((unsigned char *)(hdrbuf + 36), I_clm_);
mus_lint_to_char((unsigned char *)(hdrbuf + 40), len + extra);
i = 44;
for (j = 0; j < len; j++)
{
if (i == HDRBUFSIZ)
{
curend += HDRBUFSIZ;
CHK_WRITE(chan, hdrbuf, HDRBUFSIZ);
i = 0;
}
hdrbuf[i] = comment[j];
i++;
}
if (extra != 0)
{
if ((i + extra) > HDRBUFSIZ)
{
curend += i;
CHK_WRITE(chan, hdrbuf, i);
i = 0;
}
for (j = 0; j < extra; j++)
{
hdrbuf[i] = 0;
i++;
}
}
}
curend += i;
CHK_WRITE(chan, hdrbuf, i);
write_four_chars((unsigned char *)hdrbuf, I_data);
mus_lint_to_char((unsigned char *)(hdrbuf + 4), siz);
data_location = 8 + curend;
CHK_WRITE(chan, hdrbuf, 8);
return(MUS_NO_ERROR);
}
char *mus_header_riff_aux_comment(const char *name, off_t *starts, off_t *ends)
{
char *sc = NULL, *auxcom;
if ((starts) && (starts[0] != 0))
{
int len, j, fd, k, m;
off_t i, end;
/* found a LIST+INFO chunk (and no other comment) */
fd = mus_file_open_read(name);
if (fd == -1) return(NULL);
i = starts[0];
end = ends[0];
sc = (char *)CALLOC(end - i + 2, sizeof(char));
j = 0;
k = 4;
lseek(fd, i, SEEK_SET);
auxcom = (char *)CALLOC(end - i + 2, sizeof(char));
CHK_READ(fd, auxcom, end - i + 1);
CLOSE(fd, name);
i += 4;
while (i < end)
{
for (m = 0; m < 4; m++) sc[j++] = auxcom[k++];
len = mus_char_to_lint((unsigned char *)(auxcom + k));
if ((len <= 0) || (len > end)) break;
sc[j++] = ':';
sc[j++] = ' ';
k += 4;
for (m = 0; m < len; m++)
if (auxcom[k] != 0)
sc[j++] = auxcom[k++];
else k++;
sc[j++] ='\n';
if (len & 1)
{
len++;
k++;
}
i += (len + 8);
}
FREE(auxcom);
}
return(sc);
}
/* soundforge -- just a quick hack until I get better documentation */
static long little_long_long(unsigned char *buf)
{
return(mus_char_to_lint((unsigned char *)(buf)));
}
static int read_soundforge_header(const char *filename, int chan)
{
/* like RIFF but lowercase and 64-bit vals */
int chunksize, chunkloc, i, off;
off_t offset;
chunkloc = 12 * 2 + 16;
offset = 0;
data_format = MUS_UNKNOWN;
srate = 0;
chans = 0;
fact_samples = 0;
bits_per_sample = 0;
for (i = 0; i < AUX_COMMENTS; i++) aux_comment_start[i] = 0;
true_file_length = SEEK_FILE_LENGTH(chan);
update_form_size = little_long_long((unsigned char *)(hdrbuf + 4 * 2));
while (true)
{
offset += chunkloc;
if (offset >= true_file_length) break;
if (seek_and_read(chan, (unsigned char *)hdrbuf, offset, 64) <= 0) break;
chunksize = little_long_long((unsigned char *)(hdrbuf + 16));
if ((chunksize == 0) && /* can be empty data chunk? */
(hdrbuf[0] == 0) && (hdrbuf[1] == 0) && (hdrbuf[2] == 0) && (hdrbuf[3] == 0))
break;
if (match_four_chars((unsigned char *)hdrbuf, I_fmt_))
{
off = 16;
original_data_format = mus_char_to_lshort((unsigned char *)(hdrbuf + 8 + off));
chans = mus_char_to_lshort((unsigned char *)(hdrbuf + 10 + off));
srate = mus_char_to_lint((unsigned char *)(hdrbuf + 12 + off));
block_align = mus_char_to_lshort((unsigned char *)(hdrbuf + 20 + off));
bits_per_sample = mus_char_to_lshort((unsigned char *)(hdrbuf + 22 + off));
data_format = wave_to_sndlib_format(original_data_format, bits_per_sample, true);
}
else
{
if ((match_four_chars((unsigned char *)hdrbuf, I_data)) && (data_location == 0))
{
data_location = offset + 16 + 8;
data_size = mus_char_to_ulint((unsigned char *)(hdrbuf + 16));
if (chunksize == 0) break; /* see aiff comment */
}
else
{
if (match_four_chars((unsigned char *)hdrbuf, I_fact))
{
fact_samples = mus_char_to_lint((unsigned char *)(hdrbuf + 8));
}
}
}
chunkloc = (8 + chunksize);
chunkloc -= 8;
if (chunksize & 1) chunkloc++; /* extra null appended to odd-length chunks */
}
if (data_location == 0)
return(mus_error(MUS_HEADER_READ_FAILED, "%s: no data chunk?", filename));
if (data_size > true_file_length)
{
data_size = true_file_length - data_location;
if (data_size < 0) return(mus_error(MUS_HEADER_READ_FAILED, "%s: data_size = " OFF_TD "?", filename, data_size));
}
data_size = mus_bytes_to_samples(data_format, data_size);
return(MUS_NO_ERROR);
}
/* ------------------------------------ AVI ------------------------------------
* actually a video format, but it sometimes contains embedded 'wave' data
*
* RIFF xxx AVI
* <various LISTs>
* LIST xxxx hdr1 LIST strl(?) strh | strf | strn etc
* strf is the WAVE header starting with the sound format
* LIST xxxx movi ##db|##wb -- wb subblocks have the audio data (these need to be collected as a single stream)
* there are many complications that we make no effort to handle here
*
* described in http://www.rahul.net/jfm/avi.html
*/
static int read_avi_header(const char *filename, int chan)
{
/* we know we have checked for RIFF xxxx AVI when we arrive here */
int chunksize, chunkloc, cksize, bits;
bool happy;
off_t ckoff, cktotal, offset;
type_specifier = mus_char_to_uninterpreted_int((unsigned char *)(hdrbuf + 8));
chunkloc = 12;
offset = 0;
data_format = MUS_UNKNOWN;
srate = 0;
chans = 1;
happy = true;
true_file_length = SEEK_FILE_LENGTH(chan);
while (happy)
{
offset += chunkloc;
if (seek_and_read(chan, (unsigned char *)hdrbuf, offset, 32) <= 0)
return(mus_error(MUS_HEADER_READ_FAILED, "%s avi header: chunks confused at " OFF_TD, filename, offset));
chunksize = mus_char_to_lint((unsigned char *)(hdrbuf + 4));
if ((chunksize == 0) && /* can be empty data chunk? */
(hdrbuf[0] == 0) && (hdrbuf[1] == 0) && (hdrbuf[2] == 0) && (hdrbuf[3] == 0))
break;
if (match_four_chars((unsigned char *)hdrbuf, I_LIST))
{
ckoff = offset + 12;
cktotal = 12;
if (match_four_chars((unsigned char *)(hdrbuf + 8), I_movi))
{
while (cktotal < chunksize)
{
lseek(chan, ckoff, SEEK_SET);
CHK_READ(chan, hdrbuf, 8);
cksize = mus_char_to_lint((unsigned char *)(hdrbuf + 4));
if ((hdrbuf[2] == 'w') && (hdrbuf[3] == 'b'))
{
data_location = ckoff;
if (srate != 0) happy = false;
break;
}
ckoff += (8 + cksize);
cktotal += (8 + cksize);
}
}
else
{
while (cktotal < chunksize)
{
lseek(chan, ckoff, SEEK_SET);
CHK_READ(chan, hdrbuf, 8);
cksize = mus_char_to_lint((unsigned char *)(hdrbuf + 4));
ckoff += (8 + cksize);
cktotal += (8 + cksize);
if (match_four_chars((unsigned char *)hdrbuf, I_LIST))
{
off_t cksizer, ckoffr, cktotalr, rdsize;
ckoffr = ckoff + 12;
cktotalr = 12;
while (cktotalr < cksize)
{
lseek(chan, ckoffr, SEEK_SET);
CHK_READ(chan, hdrbuf, 8);
cksizer = mus_char_to_lint((unsigned char *)(hdrbuf + 4));
ckoffr += (8 + cksizer);
cktotalr += (8 + cksizer);
if (match_four_chars((unsigned char *)hdrbuf, I_strf))
{
if (cksizer < HDRBUFSIZ)
rdsize = cksizer;
else rdsize = HDRBUFSIZ;
CHK_READ(chan, hdrbuf, rdsize);
original_data_format = mus_char_to_lshort((unsigned char *)hdrbuf);
chans = mus_char_to_lshort((unsigned char *)(hdrbuf + 2));
srate = mus_char_to_lint((unsigned char *)(hdrbuf + 4));
/* block_align = mus_char_to_lshort((unsigned char *)(hdrbuf + 12)); */
bits = mus_char_to_lshort((unsigned char *)(hdrbuf + 14));
/* only 16 bit linear little endian for now */
if ((bits == 16) && (original_data_format == 1))
data_format = MUS_LSHORT;
if (data_location != 0) happy = false;
break;
}
}
}
}
}
}
chunkloc = (8 + chunksize);
if (chunksize & 1) chunkloc++; /* extra null appended to odd-length chunks */
}
if (data_location == 0)
return(mus_error(MUS_HEADER_READ_FAILED, "%s: no movi chunk?", filename));
if (data_location > true_file_length)
return(mus_error(MUS_HEADER_READ_FAILED, "%s: data_location " OFF_TD " > file length: " OFF_TD, filename, data_location, true_file_length));
data_size = mus_bytes_to_samples(data_format, true_file_length - data_location);
return(MUS_NO_ERROR);
}
/* ------------------------------------ SoundFont 2.0 ------------------------------------
*
* Emu's SoundFont(tm) format uses RIFF -- at ftp.creaf.com:/pub/emu/sf2_00a.ps)
*
* RIFF xxxx sfbk followed by
* LIST xxxx INFO chunk (nothing of interest -- icmt subchunk might have comments)
* LIST xxxx sdta chunk = data
* smpl chunk (16 bit linear little-endian)
* LIST xxxx pdta list chunk
* shdr subchunk has srate at 40 (int), samples at 28
*
* http://smurf.sourceforge.net/sfont_intro.php
* http://www.hammersound.net/
*/
static int soundfont_entries = 0;
static int *soundfont_starts = NULL, *soundfont_ends = NULL, *soundfont_loop_starts = NULL, *soundfont_loop_ends = NULL;
static int soundfont_size = 0;
static char **soundfont_names = NULL;
static void soundfont_entry(const char *name, int start, int end, int loop_start, int loop_end)
{
if (soundfont_entries == soundfont_size)
{
int i;
if (soundfont_size == 0)
{
soundfont_size = 8;
soundfont_starts = (int *)CALLOC(soundfont_size, sizeof(int));
soundfont_ends = (int *)CALLOC(soundfont_size, sizeof(int));
soundfont_loop_starts = (int *)CALLOC(soundfont_size, sizeof(int));
soundfont_loop_ends = (int *)CALLOC(soundfont_size, sizeof(int));
soundfont_names = (char **)CALLOC(soundfont_size, sizeof(char *));
}
else
{
soundfont_size += 8;
soundfont_starts = (int *)REALLOC(soundfont_starts, soundfont_size * sizeof(int));
soundfont_ends = (int *)REALLOC(soundfont_ends, soundfont_size * sizeof(int));
soundfont_loop_starts = (int *)REALLOC(soundfont_loop_starts, soundfont_size * sizeof(int));
soundfont_loop_ends = (int *)REALLOC(soundfont_loop_ends, soundfont_size * sizeof(int));
soundfont_names = (char **)REALLOC(soundfont_names, soundfont_size * sizeof(char *));
}
for (i = soundfont_entries; i < soundfont_size; i++) soundfont_names[i] = NULL;
}
if (soundfont_names[soundfont_entries] == NULL) soundfont_names[soundfont_entries] = (char *)CALLOC(20, sizeof(char));
strcpy(soundfont_names[soundfont_entries], name);
soundfont_starts[soundfont_entries] = start;
soundfont_ends[soundfont_entries] = end;
soundfont_loop_starts[soundfont_entries] = loop_start;
soundfont_loop_ends[soundfont_entries] = loop_end;
soundfont_entries++;
}
int mus_header_sf2_entries(void) {return(soundfont_entries);}
char *mus_header_sf2_name(int n) {return(soundfont_names[n]);}
int mus_header_sf2_start(int n) {return(soundfont_starts[n]);}
int mus_header_sf2_end(int n) {return(soundfont_ends[n]);}
int mus_header_sf2_loop_start(int n) {return(soundfont_loop_starts[n]);}
int mus_header_sf2_loop_end(int n) {return(soundfont_loop_ends[n]);}
static int read_soundfont_header(const char *filename, int chan)
{
/* we know we have checked for RIFF xxxx sfbk when we arrive here */
int chunksize, chunkloc, type, cksize, i, this_end, last_end;
off_t ckoff, offset;
bool happy;
type_specifier = mus_char_to_uninterpreted_int((unsigned char *)(hdrbuf + 8));
chunkloc = 12;
offset = 0;
soundfont_entries = 0;
data_format = MUS_LSHORT;
srate = 0;
chans = 1;
happy = true;
last_end = 0;
true_file_length = SEEK_FILE_LENGTH(chan);
while (happy)
{
offset += chunkloc;
if (seek_and_read(chan, (unsigned char *)hdrbuf, offset, 32) <= 0)
return(mus_error(MUS_HEADER_READ_FAILED, "%s soundfont header: chunks confused at " OFF_TD, filename, offset));
chunksize = mus_char_to_lint((unsigned char *)(hdrbuf + 4));
if ((chunksize == 0) && /* can be empty data chunk? */
(hdrbuf[0] == 0) && (hdrbuf[1] == 0) && (hdrbuf[2] == 0) && (hdrbuf[3] == 0))
break;
if (match_four_chars((unsigned char *)hdrbuf, I_LIST))
{
/* everything is squirreled away in LIST chunks in this format */
if (match_four_chars((unsigned char *)(hdrbuf + 8), I_pdta))
{
/* go searching for I_shdr -- headers this complicated should be illegal. */
ckoff = offset + 12;
lseek(chan, ckoff, SEEK_SET);
while (srate == 0)
{
size_t bytes;
bytes = read(chan, hdrbuf, 8);
if (bytes == 0)
{
happy = false;
break;
}
i = 0;
cksize = mus_char_to_lint((unsigned char *)(hdrbuf + 4));
ckoff += (8 + cksize);
/* here we need to jump over subchunks! -- 4-Aug-97 */
if (match_four_chars((unsigned char *)hdrbuf, I_shdr))
{
/* each sound:
* 0: name
* 20: start (in samples from start of bank)
* 24: end
* 28: loop start (also relative to start of bank)
* 32: loop end
* 36: sample rate
* 40: pitch (60 = middle C)
* 41: detune (cents)
* 42: link (to other channel if any?)
* 44: type (1 = mono, 2 = mono right, 4 = mono left, others (0x8000) apparently for ROM presets?)
*/
while (i < cksize)
{
CHK_READ(chan, hdrbuf, 46);
i += 46;
type = mus_char_to_lshort((unsigned char *)(hdrbuf + 44));
if ((type == 1) &&
(mus_char_to_lint((unsigned char *)(hdrbuf + 24)) > 0))
{
if (srate == 0)
srate = mus_char_to_lint((unsigned char *)(hdrbuf + 36));
soundfont_entry((char *)(hdrbuf),
mus_char_to_lint((unsigned char *)(hdrbuf + 20)),
this_end = mus_char_to_lint((unsigned char *)(hdrbuf + 24)),
mus_char_to_lint((unsigned char *)(hdrbuf + 28)),
mus_char_to_lint((unsigned char *)(hdrbuf + 32)));
if (this_end > last_end) last_end = this_end;
}
}
happy = (data_location == 0);
}
else
{
if (ckoff >= offset + 8 + chunksize)
break;
lseek(chan, ckoff, SEEK_SET);
}
}
}
else
{
if (match_four_chars((unsigned char *)(hdrbuf + 8), I_sdta))
{
/* assume smpl follows + subchunk size */
/* Convert 1.4 appears to create a separate smpl chunk */
data_location = offset + 20; /* LIST xxxx sdta smpl xxxx ... */
happy = (srate == 0);
}
}
}
chunkloc = (8 + chunksize);
if (chunksize & 1) chunkloc++; /* extra null appended to odd-length chunks */
}
if (srate == 0)
return(mus_error(MUS_HEADER_READ_FAILED, "%s: srate == 0", filename));
if (data_location == 0)
return(mus_error(MUS_HEADER_READ_FAILED, "%s: no sdta chunk?", filename));
if (last_end > 0)
data_size = last_end; /* samples already */
else data_size = (true_file_length - data_location) / 2;
return(MUS_NO_ERROR);
}
/* ------------------------------------ NIST ------------------------------------
*
* code available in ogitools-v1.0.tar.gz at svr-ftp.eng.cam.ac.uk:comp.speech/sources
*
* 0: "NIST_1A"
* 8: data_location as ASCII representation of integer (apparently always " 1024")
* 16: start of complicated header -- see below for details
*
* The most recent version of the SPHERE package is available
* via anonymous ftp from jaguar.ncsl.nist.gov [129.6.48.157] in the pub directory
* in compressed tar form as "sphere-v.tar.Z" (where "v" is the version
* code 2.6a last I looked). shortpack is also at this site.
*
* here's an example:
*
* NIST_1A
* 1024
* database_id -s5 TIMIT
* database_version -s3 1.0
* utterance_id -s8 aks0_sa1
* channel_count -i 1
* sample_count -i 63488
* sample_rate -i 16000
* sample_min -i -6967
* sample_max -i 7710
* sample_n_bytes -i 2
* sample_byte_format -s2 01
* sample_sig_bits -i 16
* end_head
*
* the sample_byte_format can be "10"=big-endian or "01"=little-endian, or "shortpack-v0"=compressed via shortpack
* other formats are wavpack and shorten.
*
* another field is 'sample_coding' which can be pcm (i.e. linear), 'pcm, embedded-shorten-v1.09', mu-law, alaw, ulaw, pculaw etc --
* so unpredictable as to be totally useless. This means we sometimes try to decode shorten-encoded files because
* we ignore this field. And worse, there's a 'channels_interleaved' field that (apparently) can be false. Tough.
*/
#define MAX_FIELD_LENGTH 80
static int decode_nist_value(char *str, int base, int end)
{
/* can be -i -r or -snnn where nnn = ascii rep of integer = len of string (!) */
/* we'll deal only with integer fields (and well-behaved string fields) */
int i, j;
char value[MAX_FIELD_LENGTH];
memset((void *)value, 0, MAX_FIELD_LENGTH);
i = base;
while ((i < end) && (i < MAX_FIELD_LENGTH) && (str[i] != '-')) i++; /* look for -i or whatever */
while ((i < end) && (i < MAX_FIELD_LENGTH) && (str[i] != ' ')) i++; /* look for space after it */
i++;
if (i >= MAX_FIELD_LENGTH) return(0);
for (j = 0; i < end; j++, i++)
value[j] = str[i];
value[j] = 0;
if (value[0] =='s') return(MUS_NIST_SHORTPACK);
sscanf(value, "%d", &i);
return(i);
}
static int read_nist_header(const char *filename, int chan)
{
char str[MAX_FIELD_LENGTH], name[MAX_FIELD_LENGTH];
bool happy = true;
off_t curbase;
int k, hend, j, n, nm, samples, bytes, byte_format, idata_location = 0;
type_specifier = mus_char_to_uninterpreted_int((unsigned char *)hdrbuf); /* the actual id is "NIST_1A" */
memset((void *)str, 0, MAX_FIELD_LENGTH);
memset((void *)name, 0, MAX_FIELD_LENGTH);
for (k = 8; k < 16; k++)
str[k - 8] = hdrbuf[k];
sscanf(str, "%d", &idata_location); /* always "1024" */
if (idata_location != 1024)
return(mus_error(MUS_HEADER_READ_FAILED, "%s NIST data location: %d?", filename, idata_location));
data_location = 1024;
n = 16;
hend = INITIAL_READ_SIZE;
k = 0;
curbase = 0;
samples = 0;
bytes = 0;
srate = 0;
chans = 0;
comment_start = 16;
comment_end = 16;
byte_format = 10;
for (j = 0; j < MAX_FIELD_LENGTH; j++)
str[j] =' ';
while (happy)
{
/* much as in xIFF files, march through the file looking for the data we're after */
/* in this case we munch a character at a time... */
str[k] = hdrbuf[n];
if ((((str[k] == '\0') || (str[k] == '\n')) || ((curbase + n + 1) >= data_location)) || (k == 79))
{
/* got a complete record (assuming no embedded newlines, of course) */
/* now look for a record we care about and decode it */
nm = 0;
while ((nm < MAX_FIELD_LENGTH) && (str[nm] != ' ') && (str[nm] != '\0') && (str[nm] != '\n'))
{
name[nm] = str[nm];
nm++;
}
if (nm >= MAX_FIELD_LENGTH)
{
header_type = MUS_RAW;
data_format = MUS_UNKNOWN;
return(mus_error(MUS_UNSUPPORTED_HEADER_TYPE, "%s nist header: unreadable field (length = %d)?", filename, nm));
}
name[nm] = 0;
if (strcmp(name, "sample_rate") == 0) srate = decode_nist_value(str, nm, k); else
if (strcmp(name, "channel_count") == 0) chans = decode_nist_value(str, nm, k); else
if (strcmp(name, "end_head") == 0) {happy = false; comment_end = curbase + n - 9;} else
if (strcmp(name, "sample_count") == 0) samples = decode_nist_value(str, nm, k); else
if ((bytes == 0) && (strcmp(name, "sample_n_bytes") == 0)) bytes = decode_nist_value(str, nm, k); else
if ((bytes == 0) && (strcmp(name, "sample_sig_bits") == 0)) {bytes = decode_nist_value(str, nm, k); bytes = (bytes >> 3);} else
if (strcmp(name, "sample_byte_format") == 0) byte_format = decode_nist_value(str, nm, k);
for (j = 0; j <= k; j++) str[j] =' ';
k = 0;
if ((curbase + n + 1) > 1024) happy = false;
}
else
k++;
n++;
if (n >= hend)
{
int read_bytes;
curbase += hend;
n = 0;
read_bytes = read(chan, hdrbuf, HDRBUFSIZ);
if (read_bytes < HDRBUFSIZ)
return(mus_error(MUS_HEADER_READ_FAILED, "%s NIST header truncated?", filename));
hend = HDRBUFSIZ;
}
}
data_size = samples * bytes;
if (byte_format == MUS_NIST_SHORTPACK)
{
data_format = MUS_UNKNOWN;
original_data_format = MUS_NIST_SHORTPACK;
}
else
{
switch (bytes)
{
case 1: data_format = MUS_MULAW; break;
case 2:
if (byte_format == 10)
data_format = MUS_BSHORT;
else data_format = MUS_LSHORT;
break;
case 3:
if (byte_format == 10)
data_format = MUS_B24INT;
else data_format = MUS_L24INT;
break;
case 4:
if (byte_format == 10)
data_format = MUS_BINT;
else data_format = MUS_LINT;
break;
default: data_format = MUS_BYTE; break;
}
}
true_file_length = SEEK_FILE_LENGTH(chan);
if ((data_size > true_file_length) && (original_data_format != MUS_NIST_SHORTPACK))
{
data_size = true_file_length - data_location;
if (data_size < 0) return(mus_error(MUS_HEADER_READ_FAILED, "%s: data_size = " OFF_TD "?", filename, data_size));
}
data_size = mus_bytes_to_samples(data_format, data_size);
return(MUS_NO_ERROR);
}
static int write_nist_header(int chan, int wsrate, int wchans, int siz, int format)
{
char *header;
int datum;
datum = mus_bytes_per_sample(format);
header = (char *)CALLOC(1024, sizeof(char));
sprintf(header, "NIST_1A\n 1024\nchannel_count -i %d\nsample_rate -i %d\nsample_n_bytes -i %d\nsample_byte_format -s2 %s\nsample_sig_bits -i %d\nsample_count -i %d\nend_head\n",
wchans, wsrate, datum,
((format == MUS_BSHORT) || (format == MUS_B24INT) || (format == MUS_BINT)) ? "10" : "01",
datum * 8, siz / datum);
CHK_WRITE(chan, (unsigned char *)header, 1024);
data_location = 1024;
FREE(header);
return(MUS_NO_ERROR);
}
/* ------------------------------------ BICSF ------------------------------------
* (actually, this is EBICSF and the old BICSF is called IRCAM below)
*
* 0-28: NeXT-compatible header, read by read_next_header above.
* 28: bicsf magic number (107364 or trouble)
* 32: srate as a 32-bit float
* 36: chans
* 40: data format indicator (2 = 16-bit linear, 4 = 32-bit float)
* 44: begin chunks, if any
*
* followed by AIFF-style chunked header info with chunks like:
*
* COMM size comment
* MAXA size {max amps (up to 4)} (frame offsets) time-tag unix msec counter
* CUE, PRNT, ENV etc
*
* except in Paul Lansky's "hybrid" headers, according to MixViews.
*/
static int read_bicsf_header(const char *filename, int chan)
{
int chunksize, chunkname, offset, chunkloc;
bool happy;
type_specifier = mus_char_to_uninterpreted_int((unsigned char *)(hdrbuf + 28));
header_type = MUS_BICSF;
data_location = 1024;
if (data_size == 0) data_size = (true_file_length - data_location);
lseek(chan, 40, SEEK_SET);
CHK_READ(chan, hdrbuf, HDRBUFSIZ);
original_data_format = mus_char_to_bint((unsigned char *)hdrbuf);
switch (original_data_format)
{
case 2: data_format = MUS_BSHORT; break;
case 4: data_format = MUS_BFLOAT; break;
case 8: data_format = MUS_BDOUBLE; break;
default: break;
}
/* now check for a COMM chunk, setting the comment pointers */
chunkloc = 4; /* next header + magic number, srate, chans, packing, then chunks, I think */
offset = 40;
happy = true;
while (happy)
{
if (((offset + chunkloc) >= data_location) ||
((offset + chunkloc) < 40))
happy = false;
else
{
offset += chunkloc;
if (seek_and_read(chan, (unsigned char *)hdrbuf, offset, 32) <= 0)
return(mus_error(MUS_HEADER_READ_FAILED, "%s bicsf header: chunks confused at %d", filename, offset));
chunkname = mus_char_to_uninterpreted_int((unsigned char *)hdrbuf);
chunksize = mus_char_to_bint((unsigned char *)(hdrbuf + 4));
if (match_four_chars((unsigned char *)hdrbuf, I_COMM))
{
comment_start = 8 + offset;
comment_end = comment_start + chunksize -1;
happy = false;
}
else
{
if ((chunkname == 0) || (chunksize <= 0))
happy = false;
}
chunkloc = (8 + chunksize);
}
}
return(MUS_NO_ERROR);
/* from here we fall back into read_next_header */
}
/* ------------------------------------ IRCAM ------------------------------------
* read/write CLM (old-style BICSF) -- added write option for Sun port 12-Dec-94
*
* 0: 0x1a364 or variations thereof -- byte order gives big/little_endian decision,
* ^ digit gives machine info, according to AFsp sources -- see IRCAM ints above
* 4: srate as a 32-bit float
* 8: chans
* 12: data format indicator (2 = 16-bit linear, 4 = 32-bit float)
* according to new Sox (version 11), these packing modes are now bytes/sample in low short, code in high
* so 1 = char, 0x10001 = alaw, 0x20001 = mulaw, 2 = short, 3 = 24bit?, 0x40004 = long, 4 = float (AFsp sez 4 can also be double)
* 16: comment start -- how to tell if it's a real comment?
* apparently these are separated as short code, short blocksize, then data
* codes: 0 = end, 1 = maxamp, 2 = comment, 3 = pvdata, 4 = audioencode and codemax??
* 1024: data start
*
* apparently the byte order depends on the machine.
* and yet... convert 1.4 makes a .sf file with little endian header, the VAX id, and big endian data?
* Csound also uses the VAX magic number with little-endian unscaled floats! Argh.
* even worse, Paul Lansky plops some version of this at the end of a NeXT header! Complete chaos...
*/
static int read_ircam_header(const char *filename, int chan)
{
short bcode, bloc, bsize;
int offset;
bool little, happy;
type_specifier = mus_char_to_uninterpreted_int((unsigned char *)hdrbuf);
if ((mus_char_to_lint((unsigned char *)hdrbuf) == I_IRCAM_VAX) ||
(mus_char_to_lint((unsigned char *)hdrbuf) == I_IRCAM_MIPS))
little = true;
else little = false;
little_endian = little;
data_location = 1024;
true_file_length = SEEK_FILE_LENGTH(chan);
data_size = (true_file_length - 1024);
original_data_format = big_or_little_endian_int((unsigned char *)(hdrbuf + 12), little);
data_format = MUS_UNKNOWN;
if (original_data_format == 2)
{
if (little)
data_format = MUS_LSHORT;
else data_format = MUS_BSHORT;
}
else if (original_data_format == 4)
{
if (little)
{
if (mus_char_to_lint((unsigned char *)hdrbuf) == I_IRCAM_VAX)
data_format = MUS_LFLOAT_UNSCALED; /* Csound and MixViews */
else data_format = MUS_LFLOAT;
}
else data_format = MUS_BFLOAT;
}
else if (original_data_format == 0x40004)
{
if (little) data_format = MUS_LINT;
else data_format = MUS_BINT;
}
else if (original_data_format == 0x10001) data_format = MUS_ALAW;
else if (original_data_format == 0x20001) data_format = MUS_MULAW;
else if (original_data_format == 1) data_format = MUS_BYTE;
else if (original_data_format == 3)
{
if (little) data_format = MUS_L24INT;
else data_format = MUS_B24INT;
}
else if (original_data_format == 8)
{
if (little) data_format = MUS_LDOUBLE;
else data_format = MUS_BDOUBLE;
}
srate = (int)big_or_little_endian_float((unsigned char *)(hdrbuf + 4), little);
chans = big_or_little_endian_int((unsigned char *)(hdrbuf + 8), little);
bloc = 16;
happy = true;
offset = 0;
while (happy)
{
offset += bloc;
if (seek_and_read(chan, (unsigned char *)hdrbuf, offset, 32) <= 0)
return(mus_error(MUS_HEADER_READ_FAILED, "%s ircam header: chunks confused at %d", filename, offset));
bcode = big_or_little_endian_short((unsigned char *)hdrbuf, little);
bsize = big_or_little_endian_short((unsigned char *)(hdrbuf + 2), little);
if (bcode == 2)
{
happy = false;
comment_start = 4 + offset;
comment_end = comment_start + bsize - 1; /* was -5? */
}
bloc = bsize;
if ((bsize <= 0) || (bcode <= 0) || ((offset + bloc) > 1023)) happy = false;
}
data_size = mus_bytes_to_samples(data_format, data_size);
return(MUS_NO_ERROR);
}
static int sndlib_format_to_ircam(int format)
{
switch (format)
{
case MUS_MULAW: return(0x20001); break;
case MUS_ALAW: return(0x10001); break;
case MUS_BSHORT: return(2); break;
case MUS_BINT: return(0x40004); break;
case MUS_BFLOAT: return(4); break;
default:
return(mus_error(MUS_UNSUPPORTED_DATA_FORMAT, "IRCAM header unsupported data format: %d (%s)", format, any_data_format_name(format)));
break;
}
}
static void write_ircam_comment(int fd, const char *comment, int len)
{
if (len > 0)
{
mus_bshort_to_char((unsigned char *)hdrbuf, 2);
mus_bshort_to_char((unsigned char *)(hdrbuf + 2), (short)len);
CHK_WRITE(fd, hdrbuf, 4);
CHK_WRITE(fd, (unsigned char *)comment, len);
}
else
{
mus_bint_to_char((unsigned char *)hdrbuf, 0);
CHK_WRITE(fd, hdrbuf, 4);
}
len = 1024 - (len + 20);
if (len > 0)
{
unsigned char *combuf;
combuf = (unsigned char *)CALLOC(len, sizeof(char));
CHK_WRITE(fd, combuf, len);
FREE(combuf);
}
}
static int write_ircam_header(int chan, int wsrate, int wchans, int format, const char *comment, int len)
{
mus_bint_to_char((unsigned char *)hdrbuf, 0x2a364); /* SUN id */
mus_bfloat_to_char((unsigned char *)(hdrbuf + 4), (float)wsrate);
mus_bint_to_char((unsigned char *)(hdrbuf + 8), wchans);
mus_bint_to_char((unsigned char *)(hdrbuf + 12), sndlib_format_to_ircam(format));
CHK_WRITE(chan, hdrbuf, 16);
data_location = 1024;
write_ircam_comment(chan, comment, len);
return(MUS_NO_ERROR);
}
/* ------------------------------------ 8SVX -------------------------------------
* (also known as IFF)
*
* very similar to AIFF:
* "BODY" => [4] samples [n] data
* "VHDR" => srate (short)
* "CHAN" => chans
* "ANNO" and "NAME"
*
* big_endian throughout
*/
static int read_8svx_header(const char *filename, int chan, bool bytewise)
{
int chunksize, offset, chunkloc;
bool happy;
type_specifier = mus_char_to_uninterpreted_int((unsigned char *)hdrbuf);
chunkloc = 12;
offset = 0;
if (bytewise) data_format = MUS_BYTE; else data_format = MUS_BSHORT;
srate = 0;
chans = 1;
happy = true;
true_file_length = SEEK_FILE_LENGTH(chan);
update_form_size = mus_char_to_bint((unsigned char *)(hdrbuf + 4));
while (happy)
{
offset += chunkloc;
if (seek_and_read(chan, (unsigned char *)hdrbuf, offset, 32) <= 0)
return(mus_error(MUS_HEADER_READ_FAILED, "%s 8svx header: chunks confused at %d", filename, offset));
chunksize = mus_char_to_bint((unsigned char *)(hdrbuf + 4));
if ((chunksize == 0) && /* can be empty data chunk? */
(hdrbuf[0] == 0) && (hdrbuf[1] == 0) && (hdrbuf[2] == 0) && (hdrbuf[3] == 0))
break;
if (match_four_chars((unsigned char *)hdrbuf, I_CHAN))
{
chans = mus_char_to_bint((unsigned char *)(hdrbuf + 8));
chans = (chans & 0x01) +
((chans & 0x02) >> 1) +
((chans & 0x04) >> 2) +
((chans & 0x08) >> 3);
/* what in heaven's name is this? Each bit corresponds to a channel? */
}
else
{
if (match_four_chars((unsigned char *)hdrbuf, I_VHDR))
{
/* num_samples (int) at hdrbuf + 8 */
srate = mus_char_to_ubshort((unsigned char *)(hdrbuf + 20));
original_data_format = hdrbuf[23];
if (original_data_format != 0)
data_format = MUS_UNKNOWN;
}
else
{
if ((match_four_chars((unsigned char *)hdrbuf, I_ANNO)) ||
(match_four_chars((unsigned char *)hdrbuf, I_NAME)))
{
comment_start = offset + 8;
comment_end = comment_start + chunksize - 1;
}
else
{
if (match_four_chars((unsigned char *)hdrbuf, I_BODY))
{
data_size = chunksize;
data_location = offset + 12;
happy = false;
}
}
}
}
chunkloc = (8 + chunksize);
if (chunksize & 1) chunkloc++; /* extra null appended to odd-length chunks */
}
if (data_location == 0)
return(mus_error(MUS_HEADER_READ_FAILED, "%s: no BODY chunk?", filename));
if (data_size > true_file_length)
{
data_size = true_file_length - data_location;
if (data_size < 0) return(mus_error(MUS_HEADER_READ_FAILED, "%s: data_size = " OFF_TD "?", filename, data_size));
}
data_size = mus_bytes_to_samples(data_format, data_size);
return(MUS_NO_ERROR);
}
/* ------------------------------------ VOC --------------------------------------
*
* 0: "Creative Voice File" followed by a couple ctrl-Z ('32) (swapped data)
* 20: header end (short) {8svx, 26 = data_offset, 0x10a = version, ((~version + 0x1234) & 0xffff) = 0x1129}
* [20]: first block:
* block code, 1 = data, 0 = end, 9 = data_16 (2 = continue, 3 = silence, 4 = marker, 5 = text, 6 = loop, 7 = loop-end, 8 = extended)
* block len as 24 bit int(?)
* if data, then rate code (byte), then data (assuming 8-bit unsigned, mono)
* if data_16, long srate, byte: data size (8 or 16), byte chans
* if text, ascii text (a comment)
* if extended (8) precedes 1 (data): 8 4 then time constant (short), byte: packing code (0), byte chans (0 = mono)
*
* apparently always little_endian
* updated extensively 29-Aug-95 from sox10 voc.c
*/
static int read_voc_header(const char *filename, int chan)
{
off_t curbase;
int type, len, voc_extended, bits, code;
bool happy;
data_format = MUS_UBYTE;
chans = 1;
happy = true;
voc_extended = 0;
true_file_length = SEEK_FILE_LENGTH(chan);
curbase = mus_char_to_lshort((unsigned char *)(hdrbuf + 20));
if (true_file_length < curbase)
return(mus_error(MUS_HEADER_READ_FAILED, "%s: block location " OFF_TD " > file length: " OFF_TD, filename, curbase, true_file_length));
lseek(chan, curbase, SEEK_SET);
CHK_READ(chan, hdrbuf, HDRBUFSIZ);
while (happy)
{
type = (int)(hdrbuf[0]);
len = (((int)hdrbuf[3]) << 16) + (((int)hdrbuf[2]) << 8) + (((int)hdrbuf[1]));
if (type == 1) /* voc_data */
{
data_size = len - 1; /* was -3 */
data_location = curbase + 6;
if (voc_extended == 0)
{
srate = (int)(1000000.0 / (256 - ((int)(hdrbuf[4] & 0xff))));
original_data_format = hdrbuf[5];
if (hdrbuf[5] == 0)
data_format = MUS_UBYTE;
else data_format = MUS_UNKNOWN;
}
happy = false;
}
else
{
if (type == 9) /* voc_data_16 */
{
data_size = len - 1; /* was -3 */
data_location = curbase + 6;
srate = mus_char_to_lint((unsigned char *)(hdrbuf + 4));
bits = ((int)hdrbuf[8]);
if (bits == 8)
{
code = mus_char_to_lshort((unsigned char *)(hdrbuf + 10));
if (code == 6)
data_format = MUS_ALAW;
else
if (code == 7)
data_format = MUS_MULAW;
else data_format = MUS_UBYTE;
}
else
if (bits == 16)
data_format = MUS_LSHORT;
else data_format = MUS_UNKNOWN;
chans = (int)hdrbuf[9];
if (chans == 0) chans = 1;
happy = false;
}
else
{
if (((len + curbase) < true_file_length) && (type != 0))
{
if (type == 5) /* voc_text */
{
comment_start = curbase + 4;
comment_end = comment_start + len - 1;
}
else
{
if (type == 8) /* voc_extended */
{
srate = (256000000 / (65536 - mus_char_to_lshort((unsigned char *)(hdrbuf + 4))));
if ((int)(hdrbuf[7]) == 0) chans = 1; else chans = 2;
if ((int)(hdrbuf[6]) != 0) data_format = MUS_UNKNOWN;
}
/* I'd add loop support here if I had any example sound files to test with */
}
if (seek_and_read(chan, (unsigned char *)hdrbuf, curbase + len + 4, HDRBUFSIZ) <= 0)
return(mus_error(MUS_HEADER_READ_FAILED, "%s voc header: ran off end of file", filename));
curbase += len;
}
else happy = false;
}
}
}
if (data_location == 0)
return(mus_error(MUS_HEADER_READ_FAILED, "%s: no data(type 1 or 9) chunk?", filename));
if ((data_size > true_file_length) || (data_size < (off_t)(true_file_length / 10))) /* some VOC files seem to have completely bogus lengths */
{
data_size = true_file_length - data_location;
if (data_size < 0) return(mus_error(MUS_HEADER_READ_FAILED, "%s: data_size = " OFF_TD "?", filename, data_size));
}
data_size = mus_bytes_to_samples(data_format, data_size);
return(MUS_NO_ERROR);
}
/* ------------------------------------ TwinVQ ------------------------------------
*
* from Audio Tools Library (atl.zip) at http://jfaul.de/atl.
* a chunked header for proprietary (and apparently obsolete?) compressed data
*
* 0: "TWIN"
* 4: version id (string)
* 12: header size ["cardinal" -> bint]
* common chunk header (4 of ID, bint size)
* 24: channels (bint: 0=mono 1=stereo)
* bitrate (bint)
* 32: srate (bint khz 11, 22, 44 else *1000)
* security (bint 0)
* filesize (bint bytes)
* possible chunks: NAME COMT AUTH (c) FILE ALBM DATA
*/
/* Monkey files start with "MAC ", but this is yet another compression-oriented format, I think (APE?) */
static int read_twinvq_header(const char *filename, int chan)
{
data_format = MUS_UNKNOWN;
data_location = mus_char_to_bint((unsigned char *)(hdrbuf + 12)) + 16 + 8;
chans = 1 + mus_char_to_bint((unsigned char *)(hdrbuf + 24));
srate = mus_char_to_bint((unsigned char *)(hdrbuf + 32));
if (srate == 11) srate = 11025; else
if (srate == 22) srate = 22050; else
if (srate == 44) srate = 44100; else
srate *= 1000;
true_file_length = SEEK_FILE_LENGTH(chan);
data_size = (true_file_length - data_location);
if (data_size < 0) return(mus_error(MUS_HEADER_READ_FAILED, "%s: data_size = " OFF_TD "?", filename, data_size));
return(MUS_NO_ERROR);
}
static int read_sdif_header(const char *filename, int chan)
{
/* yeah, right! */
return(MUS_UNSUPPORTED);
}
static int read_nvf_header(const char *filename, int chan)
{
/* info from nvftools by Tom Mander: */
/*
Numbers stored little-endian.
bytes 0-3: "NVF " magic number
bytes 4-7: 0x00000001 NVF version number?
bytes 8-11: 0x00000020 size of rest of header
bytes 12-15: "VFMT" VFMT chunk h
bytes 16-19: 0x00000001 VFMT version number?
bytes 20-23: 0x00000014 size of reset of VFMT header
bytes 24-27: 0x00007D00 32000 bit/s bitrate
bytes 28-29: 0x0001 channels
bytes 30-31: 0x0000 unknown
bytes 32-35: 0x00001F40 8000kHz sample rate
bytes 36-39: 0x00003E80 16000
bytes 40-41: 0x0002 width in bytes of uncompressed data?
bytes 42-43: 0x0010 width in bits of compressed data?
The rest of the data is G.721 data nibble packing big-endian, 4bits per
sample (nibble) single channel at 32kbit. When the Nomad records an NVF
file it does it in 92 sample (46 byte) frames or 0.0115sec.
*/
if (mus_char_to_lint((unsigned char *)(hdrbuf + 4)) != 1) return(mus_error(MUS_HEADER_READ_FAILED, "%s: NVF[4] != 1", filename));
if (!(match_four_chars((unsigned char *)(hdrbuf + 12), I_VFMT))) return(mus_error(MUS_HEADER_READ_FAILED, "%s: no VFMT chunk", filename));
data_format = MUS_UNKNOWN; /* g721 --translate elsewhere */
chans = 1;
srate = 8000;
data_location = 44;
true_file_length = SEEK_FILE_LENGTH(chan);
data_size = (true_file_length - data_location) * 2; /* 4 bit samps? */
if (data_size < 0) return(mus_error(MUS_HEADER_READ_FAILED, "%s: data_size = " OFF_TD "?", filename, data_size));
return(MUS_NO_ERROR);
}
/* ------------------------------------ ADC ------------------------------------
* also known as OGI format
* TIMIT format is identical except it omits the data format field (header size claims to be bytes)
*
* from ad.h and other files, ogitools-v1.0.tar.gz
* we'll look for the big/little endian sequence (short) 8 1 1-or-2 given big/little decision
*
* 0: header size in shorts (8 = 16 bytes) (OGI says this is in bytes)
* 2: version (1)
* 4: chans
* 6: rate (srate = 4000000/rate)
* 8: samples (int) -- seems to be off by 2 -- are they counting ints here?
* 12: data format (0 = big-endian)
* 16: data start
*/
static int read_adc_header(const char *filename, int chan)
{
bool little;
little = (mus_char_to_uninterpreted_int((unsigned char *)(hdrbuf + 12)) != 0); /* 0 = big endian */
data_location = 16;
if (little) data_format = MUS_LSHORT; else data_format = MUS_BSHORT;
chans = big_or_little_endian_short((unsigned char *)(hdrbuf + 4), little);
srate = 4000000 / big_or_little_endian_short((unsigned char *)(hdrbuf + 6), little);
data_size = 2 * big_or_little_endian_int((unsigned char *)(hdrbuf + 8), little);
comment_start = 0;
comment_end = 0;
true_file_length = SEEK_FILE_LENGTH(chan);
if (data_size > true_file_length)
{
data_size = true_file_length - data_location;
if (data_size < 0) return(mus_error(MUS_HEADER_READ_FAILED, "%s: data_size = " OFF_TD "?", filename, data_size));
}
data_size = mus_bytes_to_samples(data_format, data_size);
return(MUS_NO_ERROR);
}
/* ------------------------------------ AVR --------------------------------------
*
* 0: "2BIT"
* 4: sample name (null padded ASCII)
* 12: chans (short) (0 = mono, -1 = stereo)
* 14: sample size (8 or 16 bit) (short) (value is 8, 12, or 16)
* 16: sample format (signed or unsigned) (short) (0 = unsigned, -1 = signed)
* 18: loop (on/off), 20: midi (-1 = no MIDI)
* 22: srate
* avr.txt has:
* 22: Replay speed 0 = 5.485 Khz, 1 = 8.084 Khz, 2 = 10.971 Khz, 3 = 16.168 Khz, 4 = 21.942 Khz, 5 = 32.336 Khz, 6 = 43.885 Khz, 7 = 47.261 Khz
* 23: sample rate in Hertz (as a 3 byte quantity??)
* 26: length in samples
* 30: loop beg, 34: loop end, 38: midi (keyboard split), 40: compression, 42: nada ("reserved"), 44: name
* 64: comment (limited to 64 bytes)
* 128: data start
*
* the Atari .avr files appear to be 8000 Hz, mono, 8-bit linear unsigned data with an unknown header of 128 words
* apparently there was a change in format sometime in the 90's.
*
* The actual avr files I've found on the net are either garbled, or
* something is wrong with this definition (taken from CMJ and www.wotsit.org's avr.txt).
* SGI dmconvert assumes big-endian here -- this is an Atari format, so it's probably safe to assume big-endian.
*/
static int read_avr_header(const char *filename, int chan)
{
int dsize, dsigned, i;
chans = mus_char_to_bshort((unsigned char *)(hdrbuf + 12));
if (chans == 0) chans = 1; else if (chans == -1) chans = 2; else return(mus_error(MUS_HEADER_READ_FAILED, "%s chans: %d", filename, chans));
data_location = 128;
data_size = mus_char_to_bint((unsigned char *)(hdrbuf + 26));
srate = mus_char_to_ubshort((unsigned char *)(hdrbuf + 24));
dsize = mus_char_to_bshort((unsigned char *)(hdrbuf + 14));
dsigned = mus_char_to_bshort((unsigned char *)(hdrbuf + 16));
if (dsize == 16)
{
if (dsigned == 0)
data_format = MUS_UBSHORT;
else data_format = MUS_BSHORT;
}
else
{
if (dsize == 8)
{
if (dsigned == 0)
data_format = MUS_UBYTE;
else data_format = MUS_BYTE;
}
else return(mus_error(MUS_HEADER_READ_FAILED, "%s: unknown data format", filename));
}
if (seek_and_read(chan, (unsigned char *)hdrbuf, 64, 64) <= 0)
return(mus_error(MUS_HEADER_READ_FAILED, "%s avr header: ran off end of file", filename));
comment_start = 64;
i = 0;
while ((i < 64) && (hdrbuf[i] != 0)) i++;
comment_end = 64 + (i - 1);
true_file_length = SEEK_FILE_LENGTH(chan);
if (data_size > true_file_length)
{
data_size = true_file_length - data_location;
if (data_size < 0) return(mus_error(MUS_HEADER_READ_FAILED, "%s: data_size = " OFF_TD "?", filename, data_size));
}
data_size = mus_bytes_to_samples(data_format, data_size);
return(MUS_NO_ERROR);
}
/* ------------------------------------ SNDT -------------------------------------
*
* this taken from sndrtool.c (sox-10): (modified 6-Feb-98)
* 0: "SOUND" (or off by two throughout if not "0x1a"?)
* 5: 0x1a
* 6-7: 0
* 8-11: nsamps (at 12)
* 12-15: 0
* 16-19: nsamps
* 20-21: srate (little endian short) (at 22)
* 22-23: 0
* 24-25: 10
* 26-27: 4
* 28-> : <filename> "- File created by Sound Exchange"
* .->95: 0 ?
*/
/* similar is Sounder format:
* 0: 0
* 2: short srate (little endian)
* 4: 10
* 6: 4
* then data
* but this format can't be distinguished from a raw sound file
*/
static int read_sndt_header(const char *filename, int chan)
{
if (hdrbuf[4] != 'D') return(mus_error(MUS_HEADER_READ_FAILED, "%s: SNDT[4] != 'D'", filename));
data_format = MUS_UBYTE;
chans = 1;
srate = mus_char_to_ulshort((unsigned char *)(hdrbuf + 20));
data_location = 126;
data_size = mus_char_to_lint((unsigned char *)(hdrbuf + 8));
if (data_size < 0) data_size = mus_char_to_lint((unsigned char *)(hdrbuf + 10));
if (srate <= 1) srate = mus_char_to_ulshort((unsigned char *)(hdrbuf + 22));
true_file_length = SEEK_FILE_LENGTH(chan);
if (data_size > true_file_length)
{
data_size = true_file_length - data_location;
if (data_size < 0) return(mus_error(MUS_HEADER_READ_FAILED, "%s: data_size = " OFF_TD "?", filename, data_size));
}
return(MUS_NO_ERROR);
}
/* ------------------------------------ Covox v8 -------------------------------------
*
* 0: 377 125 377 252 377 125 377 252 x x 0's to 16
* then 8-bit unsigned data
*/
static int read_covox_header(const char *filename, int chan)
{
data_format = MUS_UBYTE;
chans = 1;
data_location = 16;
srate = 8000;
true_file_length = SEEK_FILE_LENGTH(chan);
data_size = true_file_length - data_location;
if (data_size < 0) return(mus_error(MUS_HEADER_READ_FAILED, "%s: data_size = " OFF_TD "?", filename, data_size));
return(MUS_NO_ERROR);
}
/* ------------------------------------ SMP -------------------------------------
*
* 0: "SOUND SAMPLE DATA "
* 18: "2.1 "
* 22-81: comment
* 82-111: sample name
* header 112 bytes
* long samples (bytes = samples*2)
* then data start
* data
* always little endian
*/
static int read_smp_header(const char *filename, int chan)
{
data_format = MUS_LSHORT;
chans = 1;
comment_start = 22;
comment_end = 81;
data_location = 116;
lseek(chan, 112, SEEK_SET);
if (read(chan, hdrbuf, 4) != 4) return(mus_error(MUS_HEADER_READ_FAILED, "%s: SMP header truncated?", filename));
data_size = (mus_char_to_lint((unsigned char *)hdrbuf));
data_format = MUS_LSHORT; /* just a guess */
srate = 8000; /* docs mention an srate floating around at the end of the file, but I can't find it in any example */
true_file_length = SEEK_FILE_LENGTH(chan);
if ((data_size * 2) > true_file_length)
{
data_size = (true_file_length - data_location) / 2;
if (data_size < 0) return(mus_error(MUS_HEADER_READ_FAILED, "%s: data_size = " OFF_TD "?", filename, data_size));
}
return(MUS_NO_ERROR);
}
/* ------------------------------------ SPPACK -------------------------------------
*
* from AF docs:
* Bytes Type Contents
* 0 160 char Text strings (2 * 80)
* 160 80 char Command line
* 240 2 int Domain (1-time, 2-freq, 3-qfreq)
* 242 2 int Frame size
* 244 4 float Sampling frequency
* 252 2 int File identifier (i.e. #o100 #o303)
* 254 2 int Data type (0xfc0e = sampled data file)
* 256 2 int Resolution (in bits 8, 16)
* 258 2 int Companding flag
* 272 240 char Text strings (3 * 80)
* 512 ... -- Audio data
*
* at least one program is writing these headers using little endian data...
*/
static int read_sppack_header(const char *filename, int chan)
{
int typ, bits;
data_location = 512;
chans = 1;
lseek(chan, 240, SEEK_SET);
if (read(chan, hdrbuf, 22) != 22) return(mus_error(MUS_HEADER_READ_FAILED, "%s SPPACK header truncated?", filename));
typ = mus_char_to_bshort((unsigned char *)hdrbuf);
data_format = MUS_UNKNOWN;
if (typ == 1)
{
if (((hdrbuf[254]) == 252) && ((hdrbuf[255]) == 14)) /* #xfc and #x0e */
{
float sr;
typ = mus_char_to_bshort((unsigned char *)(hdrbuf + 18));
bits = mus_char_to_bshort((unsigned char *)(hdrbuf + 16));
sr = mus_char_to_bfloat((unsigned char *)(hdrbuf + 4));
srate = (int)sr;
switch (typ)
{
case 1: if (bits == 16) data_format = MUS_BSHORT; else data_format = MUS_BYTE; break;
case 2: data_format = MUS_ALAW; break;
case 3: data_format = MUS_MULAW; break;
default: data_format = MUS_UNKNOWN; break;
}
data_size = SEEK_FILE_LENGTH(chan);
data_size = mus_bytes_to_samples(data_format, data_size - 512);
comment_start = 0;
comment_end = 0;
}
}
true_file_length = SEEK_FILE_LENGTH(chan);
if (true_file_length < data_location)
return(mus_error(MUS_HEADER_READ_FAILED, "%s: data_location " OFF_TD " > file length: " OFF_TD, filename, data_location, true_file_length));
if (data_size > mus_bytes_to_samples(data_format, true_file_length))
data_size = mus_bytes_to_samples(data_format, true_file_length - data_location);
return(MUS_NO_ERROR);
}
/* ------------------------------------ ESPS (Entropic Signal Processing System) -------------------------------------
*
* specs at ftp.entropic.com (also known as "SD" format)
* from AFgetInfoES.c:
*
* Bytes Type Contents
* 8 -> 11 -- Header size (bytes)
* 12 -> 15 int Sampled data record size
* 16 -> 19 int File identifier: 0x00006a1a or 0x1a6a0000
* 40 -> 65 char File creation date
* 124 -> 127 int Number of samples
* 132 -> 135 int Number of doubles in a data record
* 136 -> 139 int Number of floats in a data record
* 140 -> 143 int Number of longs in a data record
* 144 -> 147 int Number of shorts in a data record
* 148 -> 151 int Number of chars in a data record
* 160 -> 167 char User name
* 333 -> H-1 -- "Generic" header items, including "record_freq" {followed by a "double8"=64-bit ?}
* H -> ... -- Audio data
*/
static int read_esps_header(const char *filename, int chan)
{
char str[80];
bool happy = true;
off_t curbase, hend;
int k, j, n, chars, floats, shorts, doubles, bytes;
bool little;
little = (hdrbuf[18] == 0);
if (little)
data_location = mus_char_to_lint((unsigned char *)(hdrbuf + 8));
else data_location = mus_char_to_bint((unsigned char *)(hdrbuf + 8));
true_file_length = SEEK_FILE_LENGTH(chan);
data_size = true_file_length - data_location;
if (data_size < 0) return(mus_error(MUS_HEADER_READ_FAILED, "%s: data_size = " OFF_TD "?", filename, data_size));
srate = 8000;
chans = 1;
lseek(chan, 132, SEEK_SET);
CHK_READ(chan, hdrbuf, HDRBUFSIZ);
if (little)
{
doubles = mus_char_to_lint((unsigned char *)hdrbuf);
floats = mus_char_to_lint((unsigned char *)(hdrbuf + 4));
shorts = mus_char_to_lint((unsigned char *)(hdrbuf + 12));
chars = mus_char_to_lint((unsigned char *)(hdrbuf + 16));
}
else
{
doubles = mus_char_to_bint((unsigned char *)hdrbuf);
floats = mus_char_to_bint((unsigned char *)(hdrbuf + 4));
shorts = mus_char_to_bint((unsigned char *)(hdrbuf + 12));
chars = mus_char_to_bint((unsigned char *)(hdrbuf + 16));
}
if (shorts != 0)
{
data_format = ((little) ? MUS_LSHORT : MUS_BSHORT);
chans = shorts;
}
else
{
if (doubles != 0)
{
data_format = ((little) ? MUS_LDOUBLE_UNSCALED : MUS_BDOUBLE_UNSCALED);
chans = doubles;
}
else
{
if (floats != 0)
{
data_format = ((little) ? MUS_LFLOAT_UNSCALED : MUS_BFLOAT_UNSCALED);
chans = floats;
}
else
{
if (chars != 0)
{
data_format = MUS_BYTE; /* ?? */
chans = chars;
}
}
}
}
/* search for "record_freq" to get srate */
lseek(chan, 333, SEEK_SET);
CHK_READ(chan, hdrbuf, HDRBUFSIZ);
curbase = 333;
hend = curbase + HDRBUFSIZ;
k = 0;
n = 0;
for (j = 0; j < 80; j++) str[j] =' ';
while (happy)
{
str[k] = hdrbuf[n];
if ((str[k] == 'q') || (str[k] == 3) || ((curbase + n + 1) >= data_location) || (k == 78))
{ /* 3 = C-C marks end of record (?) */
str[k + 1] = 0;
if (strcmp(str, "record_freq") == 0)
{
if (seek_and_read(chan, (unsigned char *)hdrbuf, curbase + n, 32) <= 0)
return(mus_error(MUS_HEADER_READ_FAILED, "%s esps header: ran off end of file", filename));
n = 0;
if (little)
srate = (int)mus_char_to_ldouble((unsigned char *)(hdrbuf + 8));
else srate = (int)mus_char_to_bdouble((unsigned char *)(hdrbuf + 8));
happy = false;
}
if ((curbase + n + 1) >= data_location) happy = false;
k = 0;
}
else
k++;
n++;
if (n >= hend)
{
curbase += hend;
n = 0;
bytes = read(chan, hdrbuf, HDRBUFSIZ);
if (bytes != HDRBUFSIZ) break;
hend = HDRBUFSIZ;
}
}
if (srate == 0) srate = 8000;
data_size = mus_bytes_to_samples(data_format, data_size);
return(MUS_NO_ERROR);
}
/* ------------------------------------ INRS -------------------------------------
*
* from AFgetInfoIN.c:
*
* INRS-Telecommunications audio file:
* Bytes Type Contents
* 0 -> 3 float Sampling Frequency (VAX float format)
* 6 -> 25 char Creation time (e.g. Jun 12 16:52:50 1990)
* 26 -> 29 int Number of speech samples in the file (? -- old INRS files omit this)
* The data in an INRS-Telecommunications audio file is in 16-bit integer (little-endian)
* format. Header is always 512 bytes. Always mono.
*
*/
static int inrs_srates[NINRS] = {6500, 6667, 8000, 10000, 12000, 16000, 20000};
static int read_inrs_header(const char *filename, int chan, int loc)
{
true_file_length = SEEK_FILE_LENGTH(chan);
comment_start = 6;
comment_end = 25;
data_format = MUS_LSHORT;
srate = loc;
chans = 1;
data_location = 512;
true_file_length = SEEK_FILE_LENGTH(chan);
if (true_file_length < data_location)
return(mus_error(MUS_HEADER_READ_FAILED, "%s: data_location " OFF_TD " > file length: " OFF_TD, filename, data_location, true_file_length));
data_size = mus_bytes_to_samples(data_format, true_file_length - data_location);
return(MUS_NO_ERROR);
}
/* ------------------------------------ MAUD -------------------------------------
*
* very similar to AIFF:
* "MHDR" => 4: chunksize (32)
* 8: samples
* 12: bits
* 14: ditto
* 16: clock freq
* 20: clock div (srate = freq/div)
* 22: chan info (0 = mono, 1 = stereo)
* 24: ditto(?!)
* 26: format (0 = unsigned 8 or signed 16 (see bits), 2 = alaw, 3 = mulaw)
* 28-40: unused
* "MDAT" => data
* "ANNO" => comment
*/
static int read_maud_header(const char *filename, int chan)
{
int chunksize, offset, chunkloc;
bool happy;
type_specifier = mus_char_to_uninterpreted_int((unsigned char *)hdrbuf);
chunkloc = 12;
offset = 0;
data_format = MUS_BYTE;
srate = 0;
chans = 1;
happy = true;
update_form_size = mus_char_to_bint((unsigned char *)(hdrbuf + 4));
while (happy)
{
offset += chunkloc;
if (seek_and_read(chan, (unsigned char *)hdrbuf, offset, 32) <= 0)
return(mus_error(MUS_HEADER_READ_FAILED, "%s maud header: chunks confused at %d", filename, offset));
chunksize = mus_char_to_bint((unsigned char *)(hdrbuf + 4));
if ((chunksize == 0) && /* can be empty data chunk? */
(hdrbuf[0] == 0) && (hdrbuf[1] == 0) && (hdrbuf[2] == 0) && (hdrbuf[3] == 0))
break;
if (match_four_chars((unsigned char *)hdrbuf, I_MHDR))
{
int num, den;
data_size = mus_char_to_bint((unsigned char *)(hdrbuf + 8));
num = mus_char_to_bint((unsigned char *)(hdrbuf + 16));
den = mus_char_to_bshort((unsigned char *)(hdrbuf + 20));
if (den == 0) den = 1;
srate = (int)(num / den);
num = mus_char_to_bshort((unsigned char *)(hdrbuf + 12));
den = mus_char_to_bshort((unsigned char *)(hdrbuf + 26));
if (num == 8)
{
switch (den)
{
case 0: data_format = MUS_UBYTE; break;
case 2: data_format = MUS_ALAW; break;
case 3: data_format = MUS_MULAW; break;
default: data_format = MUS_UNKNOWN; break;
}
}
else data_format = MUS_BSHORT;
num = mus_char_to_bshort((unsigned char *)(hdrbuf + 22));
if (num == 0) chans = 1; else chans = 2;
}
else
{
if (match_four_chars((unsigned char *)hdrbuf, I_ANNO))
{
comment_start = offset + 8;
comment_end = comment_start + chunksize - 1;
}
else
{
if (match_four_chars((unsigned char *)hdrbuf, I_MDAT))
{
data_location = offset + 12;
happy = false;
}
}
}
chunkloc = (8 + chunksize);
if (chunksize & 1) chunkloc++; /* extra null appended to odd-length chunks */
}
if (data_location == 0)
return(mus_error(MUS_HEADER_READ_FAILED, "%s: no MDAT chunk?", filename));
true_file_length = SEEK_FILE_LENGTH(chan);
if (data_size > true_file_length)
{
data_size = true_file_length - data_location;
if (data_size < 0) return(mus_error(MUS_HEADER_READ_FAILED, "%s: data_size = " OFF_TD "?", filename, data_size));
}
data_size = mus_bytes_to_samples(data_format, data_size);
return(MUS_NO_ERROR);
}
/* ------------------------------------ CSL -------------------------------------
*
* "Computerized Speech Labs -- this info taken from wavesurfer/snack
*
* very similar to AIFF:
* 0: FORM
* 4: DS16 (kinda weird)
* 8: size (int le)
* 12: chunks
* HEDR or HDR8
* 4: size (int)
* samp: short, chans: 1 at 36 if not (int) -1, chans: 2?
* srate at 28 (le int?)
* other chunks: SD_B, SDA_ SDAB with data bytes as data followed by data
*/
static int read_csl_header(const char *filename, int chan)
{
int chunksize, offset, chunkloc;
bool happy;
type_specifier = mus_char_to_uninterpreted_int((unsigned char *)hdrbuf);
chunkloc = 12;
offset = 0;
data_format = MUS_LSHORT;
srate = 0;
chans = 1;
happy = true;
update_form_size = mus_char_to_lint((unsigned char *)(hdrbuf + 8));
while (happy)
{
offset += chunkloc;
if (seek_and_read(chan, (unsigned char *)hdrbuf, offset, 64) <= 0)
return(mus_error(MUS_HEADER_READ_FAILED, "%s csl header: chunks confused at %d", filename, offset));
chunksize = mus_char_to_lint((unsigned char *)(hdrbuf + 4));
if ((chunksize == 0) && /* can be empty data chunk? */
(hdrbuf[0] == 0) && (hdrbuf[1] == 0) && (hdrbuf[2] == 0) && (hdrbuf[3] == 0))
break;
if ((match_four_chars((unsigned char *)hdrbuf, I_HEDR)) ||
(match_four_chars((unsigned char *)hdrbuf, I_HDR8)))
{
/* 8..20: date as ascii */
/* 32: data length (int) in bytes */
if ((mus_char_to_lshort((unsigned char *)(hdrbuf + 36)) != -1) && /* these are maxamps, -1=none */
(mus_char_to_lshort((unsigned char *)(hdrbuf + 38)) != -1))
chans = 2;
srate = mus_char_to_lint((unsigned char *)(hdrbuf + 28));
}
else
{
if (match_four_chars((unsigned char *)hdrbuf, I_NOTE))
{
comment_start = offset + 8;
comment_end = comment_start + chunksize - 1;
}
else
{
if ((match_four_chars((unsigned char *)hdrbuf, I_SDA_)) ||
(match_four_chars((unsigned char *)hdrbuf, I_SDAB)) ||
(match_four_chars((unsigned char *)hdrbuf, I_SD_B)))
{
data_location = offset + 8;
data_size = mus_char_to_lint((unsigned char *)(hdrbuf + 4));
happy = false;
}
}
}
chunkloc = (8 + chunksize);
if (chunksize & 1) chunkloc++;
}
if (data_location == 0)
return(mus_error(MUS_HEADER_READ_FAILED, "%s: no SDxx chunk?", filename));
true_file_length = SEEK_FILE_LENGTH(chan);
if (data_size > true_file_length)
{
data_size = true_file_length - data_location;
if (data_size < 0) return(mus_error(MUS_HEADER_READ_FAILED, "%s: data_size = " OFF_TD "?", filename, data_size));
}
data_size = mus_bytes_to_samples(data_format, data_size);
return(MUS_NO_ERROR);
}
/* ------------------------------------ snack SMP -------------------------------------
*
* there's apparently yet another "smp" format (from nist??)
* file = samp
* sftot = 22050
* msb = last
* nchans = 1
* preemph = none
* born = snack
* msb = last here -> little endian?
* data at 1024
*/
static int read_file_samp_header(const char *filename, int chan)
{
int i = 0;
char *locbuf;
data_location = 1024;
chans = 1;
srate = 8000;
data_format = MUS_LSHORT;
lseek(chan, 10, SEEK_SET);
locbuf = (char *)CALLOC(1024, sizeof(char));
CHK_READ(chan, locbuf, 1024);
while (i < 1024)
{
if (strncmp((char *)(locbuf + i), "sftot", 5) == 0)
sscanf((const char *)(&locbuf[i + 6]), "%d", &srate);
if (strncmp((char *)(locbuf + i), "nchans", 6) == 0)
sscanf((const char *)(&locbuf[i + 7]), "%d", &chans);
if (strncmp((char *)(locbuf + i), "msb", 3) == 0)
if (strncmp((char *)(locbuf + i + 4), "first", 5) == 0)
data_format = MUS_BSHORT;
while ((i < 1024) && (locbuf[i] != 10) && (locbuf[i] != 0)) i++;
i++;
}
FREE(locbuf);
true_file_length = SEEK_FILE_LENGTH(chan);
if (true_file_length < data_location)
return(mus_error(MUS_HEADER_READ_FAILED, "%s: data_location " OFF_TD " > file length: " OFF_TD, filename, data_location, true_file_length));
data_size = mus_bytes_to_samples(data_format, true_file_length - data_location);
return(MUS_NO_ERROR);
}
/* ------------------------------------ Sound Designer I -------------------------------------
*
* complicated and defined in terms of Pascal records, so the following is a stab in the dark:
*
* 0: 1336 (i.e. header size)
* 764: comment (str255)
* 1020: sample rate (long)
* 1028: data size (short)
* 1030: a code string describing the data type (i.e. "linear") (str32)
* 1064: user comment (str255)
*
* file type: 'SFIL'
*
* always big_endian
*/
static int read_sd1_header(const char *filename, int chan)
{
int n;
chans = 1;
data_location = 1336;
lseek(chan, 1020, SEEK_SET);
if (read(chan, hdrbuf, 64) != 64) return(mus_error(MUS_HEADER_READ_FAILED, "%s Sound Designer I header truncated?", filename));
srate = mus_char_to_bint((unsigned char *)hdrbuf);
n = mus_char_to_bshort((unsigned char *)(hdrbuf + 8));
if (n == 16)
data_format = MUS_BSHORT;
else data_format = MUS_BYTE;
true_file_length = SEEK_FILE_LENGTH(chan);
if (true_file_length < data_location)
return(mus_error(MUS_HEADER_READ_FAILED, "%s: data_location " OFF_TD " > file length: " OFF_TD, filename, data_location, true_file_length));
data_size = mus_bytes_to_samples(data_format, true_file_length - data_location);
n = ((unsigned char)hdrbuf[44]);
if (n != 0)
{
comment_start = 1064;
comment_end = comment_start + n - 1;
}
return(MUS_NO_ERROR);
}
/* ------------------------------------ PSION alaw -------------------------------------
*
* 0: "ALawSoundFile**"
* 16: version
* 18: length (bytes)
* 22: padding
* 24: repeats
* 26-32: nada
* 32: data
*
* always mono 8-bit alaw 8000 Hz. All the examples on the psion net site appear to be little endian.
*/
static int read_psion_header(const char *filename, int chan)
{
if ((hdrbuf[13] != '*') || (hdrbuf[14] != '*')) return(mus_error(MUS_HEADER_READ_FAILED, "%s: PSION[13, 14] != '*'", filename));
chans = 1;
data_location = 32;
srate = 8000;
data_format = MUS_ALAW;
data_size = mus_char_to_lint((unsigned char *)(hdrbuf + 18)); /* always little-endian? */
true_file_length = SEEK_FILE_LENGTH(chan);
if (data_size > true_file_length)
{
data_size = true_file_length - data_location;
if (data_size < 0) return(mus_error(MUS_HEADER_READ_FAILED, "%s: data_size = " OFF_TD "?", filename, data_size));
}
data_size = mus_bytes_to_samples(data_format, data_size);
return(MUS_NO_ERROR);
}
/* ------------------------------------ Gravis Ultrasound Patch -------------------------------------
*
* http://www.gravis.com/Public/sdk/PATCHKIT.ZIP
*
* header [128], instruments [62], layers [49], waveheaders (nested)
* always little endian, actual files don't match exactly with any documentation
*
* Header block:
* 0: "GF1PATCH100" or "GF1PATCH110"
* 12: "ID#000002"
* 22: comment (copyright notice) (60 bytes ASCIZ)
* 82: number of instruments
* 83: number of voices
* 84: wave channels
* 85: number of waves
* 87: vol
* 89: size?
* 93: reserved (36? bytes)
*
* Instrument block:
* 0: id
* 2: name (16 bytes)
* 18: size
* 22: number of layers
* 23: reserved (40? bytes)
*
* Layer block:
* 0: "previous"
* 1: id
* 2: size
* 6: number of wave samples
* 10: reserved (40? bytes)
*
* Wave block:
* 0: name (7 bytes ASCIZ)
* 7: "fractions"
* 8: data size of wave sample
* 12: loop start
* 16: loop end
* 20: sample rate
* 22: low freq
* 26: high freq
* 30: root freq
* 34: tune
* 36: balance
* 37: envelope data (6+6 bytes I think)
* 49: tremolo and vibrato data (6 bytes)
* 55: mode bit 0: 8/16, 1: signed/unsigned
* 56: scale freq
* 58: scale factor
* 60: reserved (36 bytes)
* followed by data presumably
*/
static int read_gravis_header(const char *filename, int chan)
{
int mode;
lseek(chan, 0, SEEK_SET);
if (read(chan, hdrbuf, 128) != 128) return(mus_error(MUS_HEADER_READ_FAILED, "%s PAT header truncated?", filename));
chans = hdrbuf[84];
if (chans == 0) chans = 1;
comment_start = 22;
comment_end = 81;
lseek(chan, 239, SEEK_SET); /* try to jump to wave sample block (128+62+49) */
CHK_READ(chan, hdrbuf, 128);
srate = mus_char_to_ulshort((unsigned char *)(hdrbuf + 20));
data_size = mus_char_to_ulshort((unsigned char *)(hdrbuf + 8));
mode = hdrbuf[55];
if (mode & 1)
{
if (mode & 2)
data_format = MUS_ULSHORT;
else data_format = MUS_LSHORT;
}
else
{
if (mode & 2)
data_format = MUS_UBYTE;
else data_format = MUS_BYTE;
}
data_location = 337;
true_file_length = SEEK_FILE_LENGTH(chan);
if (data_size > true_file_length)
{
data_size = true_file_length - data_location;
if (data_size < 0) return(mus_error(MUS_HEADER_READ_FAILED, "%s: data_size = " OFF_TD "?", filename, data_size));
}
data_size = mus_bytes_to_samples(data_format, data_size);
return(MUS_NO_ERROR);
}
/* ------------------------------------ Goldwave -------------------------------------
*
* http://web.cs.mun.ca/~chris3/goldwave/goldwave.html
*/
static int read_goldwave_header(const char *filename, int chan)
{
chans = 1;
data_location = 28;
data_format = MUS_LSHORT;
data_size = mus_char_to_lint((unsigned char *)(hdrbuf + 22));
true_file_length = SEEK_FILE_LENGTH(chan);
if (true_file_length < data_location)
return(mus_error(MUS_HEADER_READ_FAILED, "%s: data_location " OFF_TD " > file length: " OFF_TD, filename, data_location, true_file_length));
if ((data_size <= 24) || (data_size > true_file_length))
data_size = (true_file_length - data_location) / 2;
else data_size /= 2;
srate = mus_char_to_lint((unsigned char *)(hdrbuf + 18));
return(MUS_NO_ERROR);
}
/* ------------------------------------ Sonic Resource Foundry -------------------------------------
*
* more reverse engineering...
* http://www.sfoundry.com/
*/
static int read_srfs_header(const char *filename, int chan)
{
chans = 1; /* might be short at header[4] */
data_location = 32;
true_file_length = SEEK_FILE_LENGTH(chan);
if (true_file_length < data_location)
return(mus_error(MUS_HEADER_READ_FAILED, "%s: data_location " OFF_TD " > file length: " OFF_TD, filename, data_location, true_file_length));
data_size = (true_file_length - data_location) / 2;
srate = mus_char_to_lint((unsigned char *)(hdrbuf + 6));
data_format = MUS_LSHORT;
return(MUS_NO_ERROR);
}
/* ------------------------------------ Quicktime -------------------------------------
*
* infinitely complicated -- see Quicktime File Format doc from Apple.
* there's no relation between this document and actual files -- a bizarre joke?
*/
static int read_qt_header(const char *filename, int chan)
{
chans = 1;
data_location = 12;
true_file_length = SEEK_FILE_LENGTH(chan);
data_size = (true_file_length - data_location);
if (data_size < 0) return(mus_error(MUS_HEADER_READ_FAILED, "%s: data_size = " OFF_TD "?", filename, data_size));
srate = 11025; /* ?? */
data_format = MUS_UBYTE;
return(MUS_NO_ERROR);
}
/* ------------------------------------ SBStudioII -------------------------------------
*
* from a file created by Convert 1.4
* 0: SND <space>
* 8: file size - 8
* SNNA SNIN SNDT blocks:
*
* built in blocks, other names are SNIN, SNDT
* need to scan for SNDT, block length, data
* SNNA len name
* supposedly ends with END (but my examples don't)
* SNIN:
* num (2), reserved (2), tuning (1), vol (2), type (2) bit 0: 1 = PCM, bit 1: 1 = 16, 0 = 8 (then loop data)
* info from Pac.txt (pac.zip) at http://www.wotsit.org/music.htm
*/
static int read_sbstudio_header(const char *filename, int chan)
{
int i, tmp;
bool happy;
unsigned char *bp;
lseek(chan, 0, SEEK_SET);
CHK_READ(chan, hdrbuf, HDRBUFSIZ);
chans = 1;
srate = 8000; /* no sampling rate field in this header */
data_format = MUS_UNKNOWN;
true_file_length = SEEK_FILE_LENGTH(chan);
happy = true;
i = 8;
bp = (unsigned char *)(hdrbuf + 8);
while (happy)
{
if (match_four_chars(bp, I_SNDT))
{
data_size = mus_char_to_lint((unsigned char *)(bp + 4));
data_location = i + 8;
happy = false;
}
else
{
if (match_four_chars(bp, I_SNIN))
{
tmp = mus_char_to_lshort((unsigned char *)(bp + 15));
if ((tmp & 1) == 0)
data_format = MUS_UNKNOWN;
else
{
if ((tmp & 2) == 0)
data_format = MUS_BYTE;
else data_format = MUS_LSHORT;
}
i += 26;
bp += 26;
}
else
{
if (match_four_chars(bp, I_SNNA))
{
tmp = mus_char_to_lint((unsigned char *)(bp + 4));
i += tmp;
bp += tmp;
}
else
{
i++;
bp++;
}
}
}
if (i >= HDRBUFSIZ)
{
data_format = MUS_UNKNOWN;
happy = false;
}
}
if (data_location == 0)
return(mus_error(MUS_HEADER_READ_FAILED, "%s: no SNDT chunk?", filename));
if ((data_size == 0) || (data_format == MUS_UNKNOWN))
return(mus_error(MUS_HEADER_READ_FAILED, "%s: data size or format bogus", filename));
if (data_size > true_file_length)
{
data_size = true_file_length - data_location;
if (data_size < 0) return(mus_error(MUS_HEADER_READ_FAILED, "%s: data_size = " OFF_TD "?", filename, data_size));
}
data_size = mus_bytes_to_samples(data_format, data_size);
return(MUS_NO_ERROR);
}
/* ------------------------------------ Delusion Sound -------------------------------------
*
* more reverse engineering...
* from a file created by Convert 1.4
* 0: DDSF
* 5: name (text)
* 55: data
* probaby similar to DMF format described in Dmf-form.txt but I don't see any other block names in the data
*/
static int read_delusion_header(const char *filename, int chan)
{
if ((hdrbuf[4] != 1) || (hdrbuf[5] > 128) || (hdrbuf[6] > 128) || (hdrbuf[7] > 128))
return(mus_error(MUS_HEADER_READ_FAILED, "%s DDSF name bogus", filename));
chans = 1;
data_location = 55;
true_file_length = SEEK_FILE_LENGTH(chan);
data_size = (true_file_length - data_location);
if (data_size < 0) return(mus_error(MUS_HEADER_READ_FAILED, "%s: data_size = " OFF_TD "?", filename, data_size));
srate = 8000;
data_format = MUS_LSHORT;
data_size = mus_bytes_to_samples(data_format, data_size);
return(MUS_NO_ERROR);
}
/* ------------------------------------ Farandole Composer WaveSample -------------------------------------
*
* 0: FSM 254
* libmodplug load_far.cpp uses: #define FARFILEMAGIC 0xFE524146 ("FAR="?)
* 4: name (text) (32 bytes)
* 36: 10, 13, 26 or something like that
* 39: len?
* 40: volume
* 41: looping data
* 49: type (0 = 8-bit, else 16)
* 50: loop mode
* 51: data
* described in Fsm.txt and Far-form.txt http://www.wotsit.org/music.htm
*/
static int read_farandole_header(const char *filename, int chan)
{
chans = 1;
data_location = 51;
true_file_length = SEEK_FILE_LENGTH(chan);
data_size = (true_file_length - data_location);
if (data_size < 0) return(mus_error(MUS_HEADER_READ_FAILED, "%s: data_size = " OFF_TD "?", filename, data_size));
srate = 8000;
if (hdrbuf[49] == 0)
data_format = MUS_BYTE;
else data_format = MUS_LSHORT;
data_size = mus_bytes_to_samples(data_format, data_size);
return(MUS_NO_ERROR);
}
/* ------------------------------------ Yamaha TX-16W -------------------------------------
*
* ftp://ftp.t0.or.at/pub/sound/tx16w/samples.yamaha
* ftp://ftp.t0.or.at/pub/sound/tx16w/faq/tx16w.tec
* http://www.t0.or.at/~mpakesch/tx16w/
*
* from tx16w.c sox 12.15: (7-Oct-98) (Mark Lakata and Leigh Smith)
* char filetype[6] "LM8953"
* nulls[10],
* dummy_aeg[6]
* format 0x49 = looped, 0xC9 = non-looped
* sample_rate 1 = 33 kHz, 2 = 50 kHz, 3 = 16 kHz
* atc_length[3] if sample rate 0, [2]&0xfe = 6: 33kHz, 0x10:50, 0xf6: 16, depending on [5] but to heck with it
* rpt_length[3] (these are for looped samples, attack and loop lengths)
* unused[2]
*/
static int read_tx16w_header(const char *filename, int chan)
{
if ((hdrbuf[4] != '5') || (hdrbuf[5] != '3')) return(mus_error(MUS_HEADER_READ_FAILED, "%s TX16 magic number bogus", filename));
chans = 1;
data_location = 32;
true_file_length = SEEK_FILE_LENGTH(chan);
data_size = (true_file_length - data_location);
if (data_size < 0) return(mus_error(MUS_HEADER_READ_FAILED, "%s: data_size = " OFF_TD "?", filename, data_size));
srate = 16000;
if (hdrbuf[23] == 1) srate = 33000;
else if (hdrbuf[23] == 2) srate = 50000;
else if (hdrbuf[23] == 3) srate = 16000;
else if (hdrbuf[23] == 0)
{
if ((hdrbuf[26] & 0xFE) == 6) srate = 33000;
else if ((hdrbuf[26] & 0xFE) == 0x10) srate = 50000;
else if ((hdrbuf[26] & 0xFE) == 0xf6) srate = 16000;
}
original_data_format = MUS_UNKNOWN;
data_format = MUS_UNKNOWN;
data_size = (off_t)((double)data_size / 1.5);
if (hdrbuf[22] == 0x49)
{
loop_modes[0] = 1;
loop_starts[0] = ((hdrbuf[26] & 1) << 16) + (hdrbuf[25] << 8) + hdrbuf[24];
loop_ends[0] = loop_starts[0] + ((hdrbuf[29] & 1) << 16) + (hdrbuf[28] << 8) + hdrbuf[27];
}
return(MUS_NO_ERROR);
}
/* ------------------------------------ Yamaha SY-85 and SY-99 -------------------------------------
*
* more reverse engineering...
* 0: SY85 (SY80 is SY-99) SY85ALL SY80 SYALL
* 5: name ("WAVE1")
* (26 int len)
* (33: comment or prompt?)
* data in 16-bit little endian (?)
*/
static int read_sy85_header(const char *filename, int chan)
{
if ((hdrbuf[4] != ' ') && (hdrbuf[4] != 'A')) return(mus_error(MUS_HEADER_READ_FAILED, "%s: unknown magic number", filename));
chans = 1;
data_location = 1024;
true_file_length = SEEK_FILE_LENGTH(chan);
data_size = (true_file_length - data_location);
if (data_size < 0) return(mus_error(MUS_HEADER_READ_FAILED, "%s: data_size = " OFF_TD "?", filename, data_size));
srate = 8000; /* unknown */
data_format = MUS_BSHORT; /* not right */
data_size = mus_bytes_to_samples(data_format, data_size);
return(MUS_NO_ERROR);
}
/* ------------------------------------ Kurzweil 2000 -------------------------------------
*
* "PRAM" then header len as big endian int??
* from krz2tx.c (Mark Lakata)
*/
static int read_kurzweil_2000_header(const char *filename, int chan)
{
chans = 1;
data_location = mus_char_to_bint((unsigned char *)(hdrbuf + 4));
true_file_length = SEEK_FILE_LENGTH(chan);
data_size = (true_file_length - data_location);
if (data_size < 0) return(mus_error(MUS_HEADER_READ_FAILED, "%s: data_size = " OFF_TD "?", filename, data_size));
srate = 44100; /* unknown */
data_format = MUS_BSHORT;
data_size = mus_bytes_to_samples(data_format, data_size);
return(MUS_NO_ERROR);
}
/* ------------------------------------ Korg -------------------------------------
*
* "SMP1" -- guessing on the rest
*/
static int read_korg_header(const char *filename, int chan)
{
chans = 1;
data_location = 70;
true_file_length = SEEK_FILE_LENGTH(chan);
data_size = (true_file_length - data_location);
if (data_size < 0) return(mus_error(MUS_HEADER_READ_FAILED, "%s: data_size = " OFF_TD "?", filename, data_size));
srate = mus_char_to_bint((unsigned char *)(hdrbuf + 48));
data_format = MUS_BSHORT;
data_size = mus_bytes_to_samples(data_format, data_size);
return(MUS_NO_ERROR);
}
/* ------------------------------------ Maui -------------------------------------
*
* "Maui" -- guessing on the rest
*/
static int read_maui_header(const char *filename, int chan)
{
lseek(chan, 420, SEEK_SET);
if (read(chan, hdrbuf, 64) != 64) return(mus_error(MUS_HEADER_READ_FAILED, "%s truncated maui header?", filename));
chans = 1;
data_location = 776;
true_file_length = SEEK_FILE_LENGTH(chan);
if (true_file_length < data_location)
return(mus_error(MUS_HEADER_READ_FAILED, "%s: data_location " OFF_TD " > file length: " OFF_TD, filename, data_location, true_file_length));
data_size = mus_char_to_lint((unsigned char *)(hdrbuf + 8));
if ((data_size * 2) > true_file_length)
data_size = (true_file_length - data_location) / 2;
srate = mus_char_to_lint((unsigned char *)(hdrbuf));
data_format = MUS_LSHORT;
return(MUS_NO_ERROR);
}
/* ------------------------------------ Impulse Tracker -------------------------------------
*
* data from its2raw.c by Ben Collver
* 0: IMPS
* 4: filename (12 bytes)
* 17: global vol
* 18: flags (1: 16-bit or 8(0), 2: stereo or mono(0)
* 19: default vol
* 20: sample name (26 bytes)
* 46: convert
* 47: default pan
* 48: length (samps)
* 52: loop start
* 56: loop end
* 60: srate
* 64: sustain loop start
* 68: sustain loop end
* 72: data location
* 76: vib speed
* 77: vib depth
* 78: vib wave
* 79: vib rate
*/
static int read_impulsetracker_header(const char *filename, int chan)
{
if (hdrbuf[18] & 4) chans = 2; else chans = 1;
if (hdrbuf[18] & 2) data_format = MUS_LSHORT; else data_format = MUS_BYTE;
data_location = mus_char_to_lint((unsigned char *)(hdrbuf + 72));
true_file_length = SEEK_FILE_LENGTH(chan);
if (true_file_length < data_location)
return(mus_error(MUS_HEADER_READ_FAILED, "%s: data_location " OFF_TD " > file length: " OFF_TD, filename, data_location, true_file_length));
data_size = (true_file_length - data_location);
srate = mus_char_to_lint((unsigned char *)(hdrbuf + 60));
data_size = mus_bytes_to_samples(data_format, data_size);
return(MUS_NO_ERROR);
}
#if 0
/* ------------------------------------ AKAI 3? -------------------------------------
*/
static int read_akai3_header(const char *filename, int chan)
{
chans = 1;
data_location = 192;
true_file_length = SEEK_FILE_LENGTH(chan);
data_size = (true_file_length - data_location);
if (data_size < 0) return(mus_error(MUS_HEADER_READ_FAILED, "%s: data_size = " OFF_TD "?", filename, data_size));
if (hdrbuf[1] == 0) srate = 22050; else srate = 44100;
data_format = MUS_LSHORT;
data_size = mus_bytes_to_samples(data_format, data_size);
return(MUS_NO_ERROR);
}
#endif
/* ------------------------------------ AKAI 4 -------------------------------------
*
* 1, 4, info from Paul Kellet -- lost the url ("MPC-2000")
*/
static int read_akai4_header(const char *filename, int chan)
{
chans = hdrbuf[21] + 1;
data_location = 42;
true_file_length = SEEK_FILE_LENGTH(chan);
data_size = (true_file_length - data_location);
if (data_size < 0) return(mus_error(MUS_HEADER_READ_FAILED, "%s: data_size = " OFF_TD "?", filename, data_size));
srate = mus_char_to_ulshort((unsigned char *)(hdrbuf + 40));
data_format = MUS_LSHORT;
data_size = mus_bytes_to_samples(data_format, data_size);
return(MUS_NO_ERROR);
}
/* ------------------------------------ PVF (portable voice format) -------------------------------------
*
* info from mgetty-voice-1.1.22/voice/libpvf/lib.c
* this is a modem-related interchange format
*
* PVF1\n
* 1 11025 32\n
* then data
* PVF1 = binary data, PVF2 = ascii
* chans | srate | sample size
*/
static int read_pvf_header(const char *filename, int chan)
{
char *buf;
int bits, i;
if (hdrbuf[4] != '\n') return(mus_error(MUS_HEADER_READ_FAILED, "PVF header messed up"));
type_specifier = mus_char_to_uninterpreted_int((unsigned char *)hdrbuf);
buf = (char *)(hdrbuf + 5);
sscanf(buf, "%d %d %d", &chans, &srate, &bits);
if (chans < 1) chans = 1;
if (srate < 0) srate = 8000;
if (bits < 8) bits = 8;
for (i = 6; i < INITIAL_READ_SIZE; i++)
if (hdrbuf[i] == '\n')
{
data_location = i + 1;
break;
}
if (data_location == 0)
return(mus_error(MUS_HEADER_READ_FAILED, "%s PVF header bad data location", filename));
if (match_four_chars((unsigned char *)hdrbuf, I_PVF2))
{
data_format = MUS_UNKNOWN; /* ascii text */
return(mus_error(MUS_HEADER_READ_FAILED, "%s PVF header unknown data format", filename));
}
/* big endian data -- they're using htonl etc */
if (bits == 8)
data_format = MUS_BYTE;
else
if (bits == 16)
data_format = MUS_BSHORT;
else data_format = MUS_BINT;
true_file_length = SEEK_FILE_LENGTH(chan);
data_size = mus_bytes_to_samples(data_format, true_file_length - data_location);
return(MUS_NO_ERROR);
}
/* ------------------------------------ Ultratracker WaveSample -------------------------------------
*
* 0..31: name (32 = ctrl-Z?)
* 33: PMUWFD (but docs say this is "dos name" -- perhaps we can't recognize this header type reliably)
* 44: 4 ints giving loop and size data
* 60: vol
* 61: "bidi" 0|8|24->8 bit else 16 -- but actual example has 0 with 16-bit
* 62: finetune
* 64: data (or 68?)
* described in Ult-form.txt http://www.wotsit.org/music.htm
*/
static int read_ultratracker_header(const char *filename, int chan)
{
chans = 1;
data_location = 64;
true_file_length = SEEK_FILE_LENGTH(chan);
if (true_file_length < data_location)
return(mus_error(MUS_HEADER_READ_FAILED, "%s: data_location " OFF_TD " > file length: " OFF_TD, filename, data_location, true_file_length));
data_size = (true_file_length - data_location);
srate = 8000;
data_format = MUS_LSHORT;
data_size = mus_bytes_to_samples(data_format, data_size);
return(MUS_NO_ERROR);
}
/* ------------------------------------ Sample dump exchange -------------------------------------
*
* 0: SDX:
* sdx2tx.c (Mark Lakata) reads from 4 for 26 (^z), then
* version (1)
* comment as pascal-style string (byte len, bytes chars)
* then 23 bytes:
* 0: packing (0 = pcm)
* 1: midi channel
* 2 + 256*[3]: sample number
* 4: sample format (15: 16 bit unsigned(?), 8: 8bit unsigned(?)
* 5: sample rate (big int?)
* 9: sample length
* 13: loop start
* 17: loop end
* 21: loop type
* 22: reserved
*/
static int read_sample_dump_header(const char *filename, int chan)
{
int i, len;
for (i = 4; i < HDRBUFSIZ; i++) if (hdrbuf[i] == 26) break;
len = hdrbuf[i + 2];
if (len > 0)
{
comment_start = i + 3;
comment_end = i + 3 + len;
}
seek_and_read(chan, (unsigned char *)hdrbuf, i + 3 + len, HDRBUFSIZ);
srate = mus_char_to_lint((unsigned char *)(hdrbuf + 5));
loop_modes[0] = 0;
if (hdrbuf[21] == 0)
{
loop_modes[0] = 1;
loop_starts[0] = mus_char_to_lint((unsigned char *)(hdrbuf + 13));
loop_ends[0] = mus_char_to_lint((unsigned char *)(hdrbuf + 17));
}
/* data_size = mus_char_to_lint((unsigned char *)(hdrbuf + 9)); */
if ((srate < 100) || (srate > 100000)) srate = 8000;
chans = 1;
data_location = i + 3 + len + 23;
true_file_length = SEEK_FILE_LENGTH(chan);
data_size = (true_file_length - data_location);
if (data_size < 0) return(mus_error(MUS_HEADER_READ_FAILED, "%s: data_size = " OFF_TD "?", filename, data_size));
if (hdrbuf[0] == 0)
data_format = MUS_ULSHORT;
else data_format = MUS_UNKNOWN;
data_size = mus_bytes_to_samples(data_format, data_size);
return(MUS_NO_ERROR);
}
/* ------------------------------------ Digiplayer ST3 -------------------------------------
*
* 0: 1 (use 'SCRS' at 76)
* 1: name
* 13: nada
* 14: "paragraph" offset of sample data
* 16: length in bytes (looks like #samples in the actual files...)
* 20: loop start
* 24: loop end
* 28: vol
* 29: ?
* 30: 0 = unpacked, 1 = DP30ADPCM
* 31: bits: 0 = loop, 1 = stereo (chans not interleaved!), 2 = 16-bit samples (little endian)
* 32: freq
* 36: nada
* 40: nada
* 42: 512
* 44: date?
* 48: sample name (28 char ASCIZ)
* 76: 'SCRS'
* 80: data starts
*
* info from http://www.wotsit.org/ S3m-form.txt
*/
static int read_digiplayer_header(const char *filename, int chan)
{
chans = 1;
data_location = 80;
true_file_length = SEEK_FILE_LENGTH(chan);
data_size = (true_file_length - data_location);
if (data_size < 0) return(mus_error(MUS_HEADER_READ_FAILED, "%s: data_size = " OFF_TD "?", filename, data_size));
srate = 8000;
data_format = MUS_ULSHORT;
if (hdrbuf[30] & 2) chans = 2;
if (hdrbuf[30] & 1)
data_format = MUS_UNKNOWN;
else
{
if (hdrbuf[30] & 4) data_format = MUS_UBYTE; /* may be backwards -- using Convert 1.4 output here */
}
data_size = mus_bytes_to_samples(data_format, data_size);
return(MUS_NO_ERROR);
}
/* ------------------------------------ CSRE adf -------------------------------------
*
* Info from Stuart Rosen
*
* 0-7: CSRE40
* 8: samples in file (long)
* 12: center line(?) (long)
* 16: start channel(?) (unsigned)
* 18: bits -- 12 or 16 (unsigned) -- is 12 bit sample file packed?
* 20: number system (0 = signed, 1 = unsigned)
* 22: srate in kHz (float)
* 26: peak sample in file (long) (can be 0)
* 30-511: comment possibly
*
* probably always little-endian (S.R. reads each sample using sizeof(int) -> 16 bits I think)
* if 12-bit unsigned we need to handle the offset somewhere
*/
static int read_adf_header(const char *filename, int chan)
{
int bits, numsys;
lseek(chan, 0, SEEK_SET);
if ((hdrbuf[4] != '4') || (hdrbuf[5] != '0')) return(mus_error(MUS_HEADER_READ_FAILED, "%s csre header bad magic number", filename));
if (read(chan, hdrbuf, 30) != 30) return(mus_error(MUS_HEADER_READ_FAILED, "%s csre header truncated?", filename));
chans = 1;
numsys = mus_char_to_ulshort((unsigned char *)(hdrbuf + 20));
bits = mus_char_to_ulshort((unsigned char *)(hdrbuf + 18));
if ((bits == 16) || (bits == 12))
{
if (numsys == 0)
data_format = MUS_LSHORT;
else data_format = MUS_ULSHORT;
}
else data_format = MUS_UNKNOWN;
srate = (int)(1000 * mus_char_to_lfloat((unsigned char *)(hdrbuf + 22)));
data_size = mus_char_to_lint((unsigned char *)(hdrbuf + 8));
data_location = 512;
true_file_length = SEEK_FILE_LENGTH(chan);
if (true_file_length < data_location)
return(mus_error(MUS_HEADER_READ_FAILED, "%s: data_location " OFF_TD " > file length: " OFF_TD, filename, data_location, true_file_length));
if (data_size > mus_bytes_to_samples(data_format, true_file_length - data_location))
data_size = mus_bytes_to_samples(data_format, true_file_length - data_location);
return(MUS_NO_ERROR);
}
/* ------------------------------------ Diamondware -------------------------------------
*
* info from Keith Weiner at DiamondWare (www.dw.com):
*
* 0-22: DWD Header Byte "DiamondWare Digitized\n\0"
* 23: 1A (EOF to abort printing of file)
* 24: Major version number
* 25: Minor version number
* 26-29: Unique sound ID (checksum XOR timestamp)
* 30: Reserved
* 31: Compression type (0 = none)
* 32-33: Sampling rate (in Hz)
* 34: Number of channels (1 = mono, 2 = stereo) (interleaved)
* 35: Number of bits per sample (8, 16) (all data signed)
* 36-37: Absolute value of largest sample in file
* 38-41: length of data section (in bytes)
* 42-45: # samples (16-bit stereo is 4 bytes/sample)
* 46-49: Offset of data from start of file (in bytes)
* 50-53: Reserved for future expansion (markers)
* 54-55: Padding
* 56:offset -- additional text: field = value
* suggested fields: TITLE, ORGARTIST, GENRE, KEYWORDS, ORGMEDIUM, EDITOR, DIGITIZER, COMMENT, SUBJECT, COPYRIGHT, SOFTWARE, CREATEDATE
*
* since this is all Windows/DOS oriented, I'll assume little-endian byte order.
*/
static int read_diamondware_header(const char *filename, int chan)
{
lseek(chan, 0, SEEK_SET);
if (read(chan, hdrbuf, 64) != 64) return(mus_error(MUS_HEADER_READ_FAILED, "%s truncated diamondware header?", filename));
chans = hdrbuf[34];
if (hdrbuf[31] == 0)
{
if (hdrbuf[35] == 8) data_format = MUS_BYTE;
else data_format = MUS_LSHORT;
}
else
{
data_format = MUS_UNKNOWN;
return(mus_error(MUS_HEADER_READ_FAILED, "%s unknown data format", filename));
}
srate = mus_char_to_ulshort((unsigned char *)(hdrbuf + 32));
data_size = mus_char_to_lint((unsigned char *)(hdrbuf + 38));
data_location = mus_char_to_lint((unsigned char *)(hdrbuf + 46));
true_file_length = SEEK_FILE_LENGTH(chan);
if (true_file_length < data_location)
return(mus_error(MUS_HEADER_READ_FAILED, "%s: data_location " OFF_TD " > file length: " OFF_TD, filename, data_location, true_file_length));
if (data_size > true_file_length - data_location)
data_size = true_file_length - data_location;
data_size = mus_bytes_to_samples(data_format, data_size);
return(MUS_NO_ERROR);
}
/* ------------------------------------ Ensoniq Paris -------------------------------------
* _paf -> Ensoniq Paris? (this info from libaudiofile)
* 0 paf (or fap)
* 4 version (0)
* 8 endianess (0 = big)
* 12 rate (unsigned int)
* 16 format (0: 16-bit linear, 24-bit linear)
* 20 channels
* 24 source (an encoded comment)
* 2048 data (24 bit files are compressed)
*/
static int read_paf_header(const char *filename, int chan)
{
int form;
bool little = false;
lseek(chan, 0, SEEK_SET);
if (read(chan, hdrbuf, 32) != 32) return(mus_error(MUS_HEADER_READ_FAILED, "%s PAF header truncated?", filename));
data_format = MUS_UNKNOWN;
if (mus_char_to_bint((unsigned char *)(hdrbuf + 8))) little = true;
if (little)
{
srate = mus_char_to_ulint((unsigned char *)(hdrbuf + 12));
form = mus_char_to_ulint((unsigned char *)(hdrbuf + 16));
if (form == 0) data_format = MUS_LSHORT;
if (form == 2) data_format = MUS_BYTE;
chans = mus_char_to_ulint((unsigned char *)(hdrbuf + 20));
}
else
{
srate = mus_char_to_ubint((unsigned char *)(hdrbuf + 12));
form = mus_char_to_ubint((unsigned char *)(hdrbuf + 16));
if (form == 0) data_format = MUS_BSHORT;
if (form == 2) data_format = MUS_BYTE;
chans = mus_char_to_ubint((unsigned char *)(hdrbuf + 20));
}
data_location = 2048;
true_file_length = SEEK_FILE_LENGTH(chan);
if (true_file_length < data_location)
return(mus_error(MUS_HEADER_READ_FAILED, "%s: data_location " OFF_TD " > file length: " OFF_TD, filename, data_location, true_file_length));
if (data_format != MUS_UNKNOWN)
data_size = mus_bytes_to_samples(data_format, true_file_length - 2048);
return(MUS_NO_ERROR);
}
/* ------------------------------------ Comdisco SPW -------------------------------------
* info from AFsp libtsp/AF/nucleus/AFgetSWpar.c
*
* header is text as in NIST:
*
* $SIGNAL_FILE 9\n (12 chars)
* $USER_COMMENT
* <comment line(s)>
* $COMMON_INFO
* SPW Version = 3.10
* System Type = <machine> (e.g. "sun4", "hp700")
* Sampling Frequency = <Sfreq> (e.g. "8000")
* Starting Time = 0
* $DATA_INFO
* Number of points = <Nsamp> (e.g. "2000")
* Signal Type = <type> ("Double", "Float", "Fixed-point", "Integer", "Logical")
* Fixed Point Format = <16, 0, t> <16, 16, t> <8, 8, t> <8, 0, t> (optional)
* Complex Format = Real_Imag (optional)
* $DATA <data_type> ("ASCII", "BINARY")
*
* the fixed point <n, m, b> is decoded as n = number of bits total per sample, m = integer bits, b = t: signed, u: unsigned
* if $DATA ASCII, data is ascii text as in IEEE text files.
* There are other complications as well. We'll just hack up a stop-gap until someone complains.
*/
static int read_comdisco_header(const char *filename, int chan)
{
/* need to grab a line at a time, call strcmp over and over. This is very tedious. */
char *line = NULL;
int i, j, k, m, n, curend, offset, len, type, d_size = 0;
bool happy = true, little, commenting;
k = 15;
line = (char *)CALLOC(256, sizeof(char));
little = false;
offset = 0;
type = 0;
srate = 0;
curend = INITIAL_READ_SIZE;
commenting = false;
while (happy)
{
for (i = 0; i < 256; i++)
{
if (k == curend)
{
offset += curend;
if (read(chan, hdrbuf, HDRBUFSIZ) != HDRBUFSIZ)
{
FREE(line);
return(mus_error(MUS_HEADER_READ_FAILED, "%s comdisco header truncated?", filename));
}
k = 0;
curend = HDRBUFSIZ;
}
if (hdrbuf[k] == '\n')
{
k++;
break;
}
line[i] = hdrbuf[k++];
}
line[i] = '\0';
if ((strcmp(line, "$DATA BINARY") == 0) ||
(strcmp(line, "$DATA ASCII") == 0))
{
happy = false;
data_location = offset + k;
}
if (strcmp(line, "$USER_COMMENT") == 0)
{
comment_start = offset + k;
commenting = true;
}
else
{
if (commenting)
{
if (line[0] == '$')
{
comment_end = offset + k - 2 - strlen(line);
commenting = false;
}
}
}
if (line[0] != '$')
{
char portion[32];
char value[32];
len = strlen(line);
for (j = 0; j < 8; j++)
portion[j] = line[j];
portion[8] ='\0';
for (j = 8; j < len; j++)
if (line[j] == '=')
break;
for (n = 0, m = j + 2; m < len; m++, n++)
value[n] = line[m];
value[n] ='\0';
if (strcmp(portion, "Sampling") == 0) sscanf(value, "%d", &srate); else
if (strcmp(portion, "Number o") == 0) sscanf(value, "%d", &d_size); else
if (strcmp(portion, "Signal T") == 0) {if (value[1] == 'o') type = 2; else if (value[1] == 'l') type = 1;} else
if (strcmp(portion, "Fixed Po") == 0) {if (value[1] == '8') type = 3;}
}
}
/* now clean up this mess */
if (data_location == 0)
return(mus_error(MUS_HEADER_READ_FAILED, "%s: no $DATA BINARY field?", filename));
if (srate == 0) return(mus_error(MUS_HEADER_READ_FAILED, "%s: srate == 0", filename));
chans = 1;
if (d_size != 0) data_size = (off_t)d_size;
switch (type)
{
case 0: if (little) data_format = MUS_LSHORT; else data_format = MUS_BSHORT; break;
case 1: if (little) data_format = MUS_LFLOAT; else data_format = MUS_BFLOAT; break;
case 2: if (little) data_format = MUS_LDOUBLE; else data_format = MUS_BDOUBLE; break;
case 3: data_format = MUS_BYTE; break;
}
true_file_length = SEEK_FILE_LENGTH(chan);
if (data_size > mus_bytes_to_samples(data_format, true_file_length - data_location))
data_size = mus_bytes_to_samples(data_format, true_file_length - data_location);
FREE(line);
return(MUS_NO_ERROR);
}
/* ------------------------------------ MS ASF -------------------------------------
*
* asf format is described at http://www.microsoft.com/asf/specs.htm
* http://www.microsoft.com/asf/spec3/ASF0198ps.exe
*
* this header is completely insane
*/
static int read_asf_header(const char *filename, int chan)
{
/* a chunked data format, so not really acceptable here or elsewhere -- needs to be unchunked */
int len, ilen = 0, i, j, bits = 0;
bool asf_huge = false, present;
/* apparently "huge" has some meaning in Windoze C */
len = mus_char_to_lint((unsigned char *)(hdrbuf + 16)); /* actually 64 bits */
i = (128+64) / 8;
srate = 0;
chans = 0;
while (i < len)
{
seek_and_read(chan, (unsigned char *)hdrbuf, i, HDRBUFSIZ);
if ((unsigned int)(hdrbuf[1]) == 0x29)
switch (hdrbuf[0])
{
case 0xd0:
asf_huge = (hdrbuf[((128+64+128+64+64+64+64+32)/8)] & 2);
break;
case 0xd4:
present = ((hdrbuf[16+8+16+8+8+ 4+4+4+4+ 4+4] >> 3) & 0x3);
if (present)
j = 16+8+16+8+8+ 4+4+4+4+ 4+4+ 4+ (4+4+4) + 2;
else j = 16+8+16+8+8+ 4+4+4+4+ 4+4+ 4+ 2;
srate = mus_char_to_lint((unsigned char *)(hdrbuf + j+11+36));
bits = mus_char_to_lint((unsigned char *)(hdrbuf + j+11+32));
chans = mus_char_to_ulshort((unsigned char *)(hdrbuf + j+65));
original_data_format = mus_char_to_lint((unsigned char *)(hdrbuf + j+11));
break;
default: break;
}
ilen = mus_char_to_lint((unsigned char *)(hdrbuf + 16));
if (ilen <= 0) break;
if ((chans > 0) && (srate > 0)) break;
i += ilen;
}
i = len;
seek_and_read(chan, (unsigned char *)hdrbuf, i, HDRBUFSIZ);
data_format = MUS_UNKNOWN;
if (((unsigned int)(hdrbuf[1]) == 0x29) && ((unsigned int)(hdrbuf[0]) == 0xd2))
{
int a_huge = 2;
ilen = mus_char_to_lint((unsigned char *)(hdrbuf + 16));
if (asf_huge) a_huge = 4;
data_location = i + 20 + a_huge + 2+4+3+1;
if (bits == 0) bits = 8;
data_format = wave_to_sndlib_format(original_data_format, bits, true);
}
else return(mus_error(MUS_HEADER_READ_FAILED, "%s: unknown data format", filename));
data_size = ilen - data_location;
true_file_length = SEEK_FILE_LENGTH(chan);
if (data_size > true_file_length)
{
data_size = true_file_length - data_location;
if (data_size < 0) return(mus_error(MUS_HEADER_READ_FAILED, "%s: data_size = " OFF_TD "?", filename, data_size));
}
data_size = mus_bytes_to_samples(data_format, data_size);
return(MUS_NO_ERROR);
}
/* ------------------------------------ no header ------------------------------------- */
static int header_raw_srate = 44100;
static int header_raw_chans = 2;
static int header_raw_format = MUS_BSHORT;
static int read_no_header(const char *filename, int chan)
{
srate = header_raw_srate;
chans = header_raw_chans;
data_format = header_raw_format;
data_location = 0;
data_size = SEEK_FILE_LENGTH(chan);
true_file_length = data_size;
data_size = mus_bytes_to_samples(data_format, data_size);
return(MUS_NO_ERROR);
}
void mus_header_set_raw_defaults(int sr, int chn, int frm)
{
if (sr > 0) header_raw_srate = sr;
if (chn > 0) header_raw_chans = chn;
if (MUS_DATA_FORMAT_OK(frm)) header_raw_format = frm;
}
void mus_header_raw_defaults(int *sr, int *chn, int *frm)
{
(*sr) = header_raw_srate;
(*chn) = header_raw_chans;
(*frm) = header_raw_format;
}
/* ------------------------------------ all together now ------------------------------------ */
static int mus_header_read_1(const char *filename, int chan)
{
/* returns 0 on success (at least to the extent that we can report the header type), -1 for error */
int i, loc = 0, bytes;
bool happy;
header_type = MUS_UNSUPPORTED;
data_format = MUS_UNKNOWN;
comment_start = 0;
comment_end = 0;
data_size = 0;
data_location = 0;
if (loop_modes)
{
loop_modes[0] = 0;
loop_modes[1] = 0;
}
bytes = read(chan, hdrbuf, INITIAL_READ_SIZE);
/* if it's a 0 length file we need to get out */
if (bytes < 0)
return(mus_error(MUS_HEADER_READ_FAILED, "%s: %s", filename, (errno) ? STRERROR(errno) : "bytes read < 0?"));
if (bytes == 0)
{
header_type = MUS_RAW;
srate = header_raw_srate;
chans = header_raw_chans;
data_format = header_raw_format;
data_location = 0;
true_file_length = 0;
return(MUS_NO_ERROR);
}
if (bytes < 4)
{
header_type = MUS_RAW;
return(read_no_header(filename, chan));
}
if ((match_four_chars((unsigned char *)hdrbuf, I_DSND)) ||
(match_four_chars((unsigned char *)hdrbuf, I_DECN)))
{
if (bytes < 24)
return(mus_error(MUS_HEADER_READ_FAILED, "%s NeXT header truncated? found only %d bytes", filename, bytes));
header_type = MUS_NEXT;
return(read_next_header(filename, chan));
}
if (match_four_chars((unsigned char *)hdrbuf, I_FORM))
{
/* next 4 bytes are apparently the file size or something equally useless */
if (bytes < 12)
return(mus_error(MUS_HEADER_READ_FAILED, "%s AIFF header truncated? found only %d bytes", filename, bytes));
if (match_four_chars((unsigned char *)(hdrbuf + 8), I_AIFF))
{
header_type = MUS_AIFF;
return(read_aiff_header(filename, chan, 0));
}
if (match_four_chars((unsigned char *)(hdrbuf + 8), I_AIFC))
{
header_type = MUS_AIFC;
return(read_aiff_header(filename, chan, 0));
}
if (match_four_chars((unsigned char *)(hdrbuf + 8), I_8SVX))
{
header_type = MUS_SVX;
return(read_8svx_header(filename, chan, true));
}
if (match_four_chars((unsigned char *)(hdrbuf + 8), I_16SV))
{
header_type = MUS_SVX;
return(read_8svx_header(filename, chan, false));
}
if (match_four_chars((unsigned char *)(hdrbuf + 8), I_MAUD))
{
header_type = MUS_MAUD;
return(read_maud_header(filename, chan));
}
/* apparently SAMP here -> sampled audio data (?) */
if (match_four_chars((unsigned char *)(hdrbuf + 4), I_DS16))
{
header_type = MUS_CSL;
return(read_csl_header(filename, chan));
}
return(mus_error(MUS_HEADER_READ_FAILED, "%s: unrecognized \"FORM\" (i.e. AIFF) header", filename));
}
if ((match_four_chars((unsigned char *)hdrbuf, I_RIFF)) ||
(match_four_chars((unsigned char *)hdrbuf, I_RIFX)))
{
if (bytes < 12)
return(mus_error(MUS_HEADER_READ_FAILED, "%s RIFF header truncated? found only %d bytes", filename, bytes));
if (match_four_chars((unsigned char *)(hdrbuf + 8), I_WAVE))
{
header_type = MUS_RIFF;
return(read_riff_header(filename, chan));
}
if (match_four_chars((unsigned char *)(hdrbuf + 8), I_sfbk))
{
header_type = MUS_SOUNDFONT;
return(read_soundfont_header(filename, chan));
}
if (match_four_chars((unsigned char *)(hdrbuf + 8), I_AVI_))
{
header_type = MUS_AVI;
return(read_avi_header(filename, chan));
}
return(mus_error(MUS_HEADER_READ_FAILED, "%s: unrecognized \"RIFF\" (i.e. 'wave') header", filename));
}
if ((equal_big_or_little_endian((unsigned char *)hdrbuf, I_IRCAM_VAX)) ||
(equal_big_or_little_endian((unsigned char *)hdrbuf, I_IRCAM_SUN)) ||
(equal_big_or_little_endian((unsigned char *)hdrbuf, I_IRCAM_MIPS)) ||
(equal_big_or_little_endian((unsigned char *)hdrbuf, I_IRCAM_NEXT)))
{
if (bytes < 24)
return(mus_error(MUS_HEADER_READ_FAILED, "%s IRCAM header truncated? found only %d bytes", filename, bytes));
header_type = MUS_IRCAM;
return(read_ircam_header(filename, chan));
}
if (match_four_chars((unsigned char *)hdrbuf, I_NIST))
{
header_type = MUS_NIST;
return(read_nist_header(filename, chan));
}
if (match_four_chars((unsigned char *)hdrbuf, I_SOUN))
{
if ((match_four_chars((unsigned char *)(hdrbuf + 4), I_D_SA)) &&
(match_four_chars((unsigned char *)(hdrbuf + 8), I_MPLE)))
{
header_type = MUS_SMP;
return(read_smp_header(filename, chan));
}
else
{
header_type = MUS_SNDT;
return(read_sndt_header(filename, chan));
}
}
if ((match_four_chars((unsigned char *)hdrbuf, I_VOC0)) &&
(match_four_chars((unsigned char *)(hdrbuf + 4), I_VOC1)))
{
if (bytes < 24)
return(mus_error(MUS_HEADER_READ_FAILED, "%s VOC header truncated? found only %d bytes", filename, bytes));
header_type = MUS_VOC;
return(read_voc_header(filename, chan));
}
if (match_four_chars((unsigned char *)hdrbuf, I_AVR_))
{
header_type = MUS_AVR;
return(read_avr_header(filename, chan));
}
if (mus_char_to_bshort((unsigned char *)hdrbuf) == 1336)
{
header_type = MUS_SD1;
return(read_sd1_header(filename, chan));
}
if ((match_four_chars((unsigned char *)hdrbuf, I_ALaw)) &&
(match_four_chars((unsigned char *)(hdrbuf + 4), I_Soun)))
{
header_type = MUS_PSION;
return(read_psion_header(filename, chan));
}
if ((match_four_chars((unsigned char *)hdrbuf, I_GF1P)) &&
(match_four_chars((unsigned char *)(hdrbuf + 4), I_ATCH)))
{
header_type = MUS_GRAVIS;
return(read_gravis_header(filename, chan));
}
if ((match_four_chars((unsigned char *)hdrbuf, I_DSIG)) &&
(match_four_chars((unsigned char *)(hdrbuf + 4), I_NAL_)))
{
header_type = MUS_COMDISCO;
return(read_comdisco_header(filename, chan));
}
if ((match_four_chars((unsigned char *)hdrbuf, I_GOLD)) &&
(match_four_chars((unsigned char *)(hdrbuf + 4), I__WAV)))
{
header_type = MUS_GOLDWAVE;
return(read_goldwave_header(filename, chan));
}
if ((match_four_chars((unsigned char *)hdrbuf, I_Diam)) &&
(match_four_chars((unsigned char *)(hdrbuf + 4), I_ondW)))
{
header_type = MUS_DIAMONDWARE;
return(read_diamondware_header(filename, chan));
}
if (match_four_chars((unsigned char *)hdrbuf, I_SRFS))
{
header_type = MUS_SRFS;
return(read_srfs_header(filename, chan));
}
if (match_four_chars((unsigned char *)hdrbuf, I_CSRE))
{
header_type = MUS_ADF;
return(read_adf_header(filename, chan));
}
if (match_four_chars((unsigned char *)hdrbuf, I_fLaC))
{
header_type = MUS_FLAC;
return(MUS_NO_ERROR);
}
if (match_four_chars((unsigned char *)hdrbuf, I_OggS))
{
if ((hdrbuf[29] == 'v') && (hdrbuf[30] == 'o') && (hdrbuf[31] == 'r'))
header_type = MUS_OGG;
else
{
if ((hdrbuf[28] == 'S') && (hdrbuf[29] == 'p') && (hdrbuf[30] == 'e'))
header_type = MUS_SPEEX;
}
return(MUS_NO_ERROR);
}
if ((match_four_chars((unsigned char *)hdrbuf, I_file)) &&
(match_four_chars((unsigned char *)(hdrbuf + 4), I__sam)))
{
header_type = MUS_FILE_SAMP;
return(read_file_samp_header(filename, chan));
}
if ((hdrbuf[0] == 0xf0) && (hdrbuf[1] == 0x7e) && (hdrbuf[3] == 0x01))
{
header_type = MUS_MIDI_SAMPLE_DUMP;
chans = 1;
srate = (int)(1.0e9 / (float)((hdrbuf[7] + (hdrbuf[8] << 7) + (hdrbuf[9] << 14))));
data_size = (hdrbuf[10] + (hdrbuf[11] << 7) + (hdrbuf[12] << 14));
/* since this file type has embedded blocks, we have to translate it elsewhere */
return(MUS_NO_ERROR);
}
/* no recognized magic number at start -- poke around in possible header for other types */
/* ESPS is either 0x00006a1a or 0x1a6a0000 at byte 16 */
if (equal_big_or_little_endian((unsigned char *)(hdrbuf + 16), 0x00006a1a))
{
header_type = MUS_ESPS;
return(read_esps_header(filename, chan));
}
lseek(chan, 0, SEEK_SET);
CHK_READ(chan, hdrbuf, 256);
if ((hdrbuf[252] == 64) && (hdrbuf[253] == 195)) /* #o100 and #o303 */
{
header_type = MUS_SPPACK;
return(read_sppack_header(filename, chan));
}
if ((match_four_chars((unsigned char *)(hdrbuf + 65), I_FSSD)) &&
(match_four_chars((unsigned char *)(hdrbuf + 128), I_HCOM)))
{
header_type = MUS_HCOM;
return(MUS_NO_ERROR);
}
happy = false;
for (i = 0; i < NINRS; i++)
{
if (equal_big_or_little_endian((unsigned char *)hdrbuf, I_INRS[i]))
{
happy = true;
loc = inrs_srates[i];
}
}
if (happy)
{
header_type = MUS_INRS;
return(read_inrs_header(filename, chan, loc));
}
if (mus_char_to_ubint((unsigned char *)hdrbuf) == 0xAAAAAAAA)
{
header_type = MUS_MUS10;
return(MUS_NO_ERROR);
}
if ((match_four_chars((unsigned char *)hdrbuf, I_SPIB)) ||
(match_four_chars((unsigned char *)hdrbuf, I_S___)))
{
header_type = MUS_IEEE;
return(MUS_NO_ERROR);
}
if (match_four_chars((unsigned char *)hdrbuf, I_riff))
{
header_type = MUS_SOUNDFORGE;
return(read_soundforge_header(filename, chan));
}
if ((match_four_chars((unsigned char *)hdrbuf, I_PVF1)) ||
(match_four_chars((unsigned char *)hdrbuf, I_PVF2)))
{
header_type = MUS_PVF;
return(read_pvf_header(filename, chan));
}
if (match_four_chars((unsigned char *)hdrbuf, I_MThd))
{
header_type = MUS_MIDI;
return(MUS_ERROR);
}
if (match_four_chars((unsigned char *)hdrbuf, I_SND_))
{
header_type = MUS_SBSTUDIOII;
return(read_sbstudio_header(filename, chan));
}
if (match_four_chars((unsigned char *)hdrbuf, I_FSMt))
{
header_type = MUS_FARANDOLE;
return(read_farandole_header(filename, chan));
}
if (match_four_chars((unsigned char *)hdrbuf, I_SDXc))
{
header_type = MUS_SAMPLE_DUMP;
return(read_sample_dump_header(filename, chan));
}
if (match_four_chars((unsigned char *)hdrbuf, I_DDSF))
{
header_type = MUS_DELUSION;
return(read_delusion_header(filename, chan));
}
if (match_four_chars((unsigned char *)hdrbuf, I_LM89))
{
header_type = MUS_YAMAHA_TX16W;
return(read_tx16w_header(filename, chan));
}
if (match_four_chars((unsigned char *)hdrbuf, I_SY85))
{
header_type = MUS_YAMAHA_SY85;
return(read_sy85_header(filename, chan));
}
if (match_four_chars((unsigned char *)hdrbuf, I_SY80))
{
header_type = MUS_YAMAHA_SY99;
return(read_sy85_header(filename, chan));
}
if (match_four_chars((unsigned char *)hdrbuf, I_PRAM))
{
header_type = MUS_KURZWEIL_2000;
return(read_kurzweil_2000_header(filename, chan));
}
if (match_four_chars((unsigned char *)hdrbuf, I_SMP1))
{
header_type = MUS_KORG;
return(read_korg_header(filename, chan));
}
if (match_four_chars((unsigned char *)hdrbuf, I_Maui))
{
header_type = MUS_MAUI;
return(read_maui_header(filename, chan));
}
if (match_four_chars((unsigned char *)hdrbuf, I_IMPS))
{
header_type = MUS_IMPULSETRACKER;
return(read_impulsetracker_header(filename, chan));
}
if (match_four_chars((unsigned char *)(hdrbuf + 35), I_UWFD))
{
header_type = MUS_ULTRATRACKER;
return(read_ultratracker_header(filename, chan));
}
if (match_four_chars((unsigned char *)(hdrbuf + 76), I_SCRS))
{
header_type = MUS_DIGIPLAYER;
return(read_digiplayer_header(filename, chan));
}
if (match_four_chars((unsigned char *)hdrbuf, I_covox))
{
header_type = MUS_COVOX;
return(read_covox_header(filename, chan));
}
if ((match_four_chars((unsigned char *)hdrbuf, I__PAF)) ||
(match_four_chars((unsigned char *)hdrbuf, I_FAP_)))
{
header_type = MUS_PAF;
return(read_paf_header(filename, chan));
}
if (match_four_chars((unsigned char *)hdrbuf, I_TWIN))
{
header_type = MUS_TWINVQ;
return(read_twinvq_header(filename, chan));
}
#if MUS_LITTLE_ENDIAN
if (mus_char_to_uninterpreted_int((unsigned char *)hdrbuf) == 0x01000800)
#else
if (mus_char_to_uninterpreted_int((unsigned char *)hdrbuf) == 0x00080001)
#endif
{
header_type = MUS_ADC;
return(read_adc_header(filename, chan));
}
if ((match_four_chars((unsigned char *)hdrbuf, I_ones)) &&
(match_four_chars((unsigned char *)(hdrbuf + 12), I_FORM)))
{
/* possibly an OMF file with an embedded AIFF data file -- this is just a guess... */
header_type = MUS_OMF;
return(read_aiff_header(filename, chan, 12));
/* another (apparently) along these lines is TOC */
}
if ((match_four_chars((unsigned char *)hdrbuf, I_zeros)) &&
(match_four_chars((unsigned char *)(hdrbuf + 4), I_mdat)))
{
/* possibly quicktime?? */
header_type = MUS_QUICKTIME;
return(read_qt_header(filename, chan));
}
if ((hdrbuf[0] == 1) && (hdrbuf[1] == 4)) /* name follows --check? */
{
header_type = MUS_AKAI4;
return(read_akai4_header(filename, chan));
}
#if 0
if ((hdrbuf[0] == 3) && (hdrbuf[16] == 128))
{
header_type = MUS_AKAI4;
return(read_akai3_header(filename, chan));
}
#endif
if ((match_four_chars((unsigned char *)hdrbuf, I_asf0)) &&
(match_four_chars((unsigned char *)(hdrbuf + 4), I_asf1)) &&
(match_four_chars((unsigned char *)(hdrbuf + 8), I_asf2)) &&
(match_four_chars((unsigned char *)(hdrbuf + 12), I_asf3)))
{
header_type = MUS_ASF;
return(read_asf_header(filename, chan));
}
if (match_four_chars((unsigned char *)hdrbuf, I_SDIF))
{
header_type = MUS_SDIF;
return(read_sdif_header(filename, chan));
}
if (match_four_chars((unsigned char *)hdrbuf, I_NVF_))
{
header_type = MUS_NVF;
return(read_nvf_header(filename, chan));
}
if (match_four_chars((unsigned char *)hdrbuf, I_ajkg))
{
header_type = MUS_SHORTEN;
return(MUS_NO_ERROR);
}
if (match_four_chars((unsigned char *)hdrbuf, I_TTA1))
{
header_type = MUS_TTA;
return(MUS_NO_ERROR);
}
if (match_four_chars((unsigned char *)hdrbuf, I_wvpk))
{
header_type = MUS_WAVPACK;
return(MUS_NO_ERROR);
}
header_type = MUS_RAW;
return(read_no_header(filename, chan));
}
static int local_error_type = MUS_NO_ERROR;
static char *local_error_msg = NULL;
static mus_error_handler_t *old_error_handler;
static void local_mus_error(int type, char *msg)
{
local_error_type = type;
if (local_error_msg)
free(local_error_msg);
if (msg)
local_error_msg = strdup(msg);
else local_error_msg = NULL;
}
int mus_header_read(const char *name)
{
int chan, err = 0;
chan = mus_file_open_read(name);
if (chan == -1)
return(mus_error(MUS_CANT_OPEN_FILE, "can't open %s: %s", name, STRERROR(errno)));
old_error_handler = mus_error_set_handler(local_mus_error);
err = mus_header_read_1(name, chan);
mus_error_set_handler(old_error_handler);
CLOSE(chan, name);
if (err != MUS_NO_ERROR)
return(mus_error(local_error_type, local_error_msg)); /* pass error info on up the chain now that we've cleaned up the open file descriptor */
return(err);
}
static mus_header_write_hook_t *mus_header_write_hook = NULL;
mus_header_write_hook_t *mus_header_write_set_hook(mus_header_write_hook_t *new_hook)
{
mus_header_write_hook_t *old_hook;
old_hook = mus_header_write_hook;
mus_header_write_hook = new_hook;
return(old_hook);
}
int mus_header_write(const char *name, int type, int in_srate, int in_chans, off_t loc, off_t size_in_samples, int format, const char *comment, int len)
{
/* the "loc" arg is a mistake -- just always set it to 0 */
int chan, err = MUS_NO_ERROR;
off_t siz;
chan = mus_file_create(name);
if (chan == -1)
return(mus_error(MUS_CANT_OPEN_FILE, "can't write %s: %s", name, STRERROR(errno)));
if (mus_header_write_hook)
(*mus_header_write_hook)(name);
siz = mus_samples_to_bytes(format, size_in_samples);
/* no mus_error calls within any of the write functions */
switch (type)
{
case MUS_NEXT: err = mus_header_write_next_header(chan, in_srate, in_chans, loc, siz, format, comment, len); break;
case MUS_AIFC: err = write_aif_header(chan, in_srate, in_chans, siz, format, comment, len, true); break;
case MUS_AIFF: err = write_aif_header(chan, in_srate, in_chans, siz, format, comment, len, false); break;
case MUS_RIFF: err = write_riff_header(chan, in_srate, in_chans, siz, format, comment, len); break;
case MUS_IRCAM: err = write_ircam_header(chan, in_srate, in_chans, format, comment, len); break;
case MUS_NIST: err = write_nist_header(chan, in_srate, in_chans, siz, format); break;
case MUS_RAW:
data_location = 0;
data_size = mus_bytes_to_samples(format, siz);
srate = in_srate;
chans = in_chans;
header_type = MUS_RAW;
data_format = format;
break;
default:
CLOSE(chan, name);
return(mus_error(MUS_UNSUPPORTED_HEADER_TYPE, "can't write %s header for %s", mus_header_type_name(type), name));
break;
}
CLOSE(chan, name);
return(err);
}
int mus_header_change_data_size(const char *filename, int type, off_t size) /* in bytes */
{
/* the read header at sample update (sound-close) time could be avoided if the
* ssnd_location (etc) were saved and passed in -- perhaps an added optimized
* header change data size? Means saving the relevant data, and exporting it
* from headers.c. Can we guarantee consistency here?
*/
int chan, err = MUS_NO_ERROR;
switch (type)
{
case MUS_AIFF:
case MUS_AIFC:
case MUS_NIST:
case MUS_RIFF:
err = mus_header_read(filename);
break;
default:
break;
}
if (err == MUS_ERROR) return(err);
chan = mus_file_reopen_write(filename);
if (chan == -1) return(mus_error(MUS_HEADER_WRITE_FAILED, "%s: %s", filename, STRERROR(errno)));
switch (type)
{
case MUS_NEXT:
lseek(chan, 8L, SEEK_SET);
mus_bint_to_char((unsigned char *)(hdrbuf + 0), (int)size);
CHK_WRITE(chan, hdrbuf, 4);
break;
case MUS_AIFC:
case MUS_AIFF:
/* we apparently have to make sure the form size and the data size are correct
* assumed here that we'll only be updating our own AIFF files
* There are 3 such locations -- the 2nd word of the file which is the overall form size,
* the frames variable in the COMM chunk, and the chunk-size variable in the SSND chunk
* an unexpected hassle for CLM is that we can open/close the output file many times if running mix,
* so we have to update the various size fields taking into account the old size
*/
/* read sets current update_form_size, data_size, data_format, update_frames_location, update_ssnd_location */
lseek(chan, 4L, SEEK_SET);
mus_bint_to_char((unsigned char *)hdrbuf, (int)size + update_form_size - mus_samples_to_bytes(data_format, data_size));
/* cancel old data_size from previous possible write */
CHK_WRITE(chan, hdrbuf, 4);
lseek(chan, update_frames_location, SEEK_SET);
mus_bint_to_char((unsigned char *)hdrbuf, (int)size / (chans * mus_bytes_per_sample(data_format)));
CHK_WRITE(chan, hdrbuf, 4);
lseek(chan, update_ssnd_location, SEEK_SET);
mus_bint_to_char((unsigned char *)hdrbuf, (int)size + 8);
CHK_WRITE(chan, hdrbuf, 4);
break;
case MUS_RIFF:
/* read sets current update_form_size, data_format, data_size, update_ssnd_location */
lseek(chan, 4L, SEEK_SET);
mus_lint_to_char((unsigned char *)hdrbuf, (int)size + update_form_size - mus_samples_to_bytes(data_format, data_size));
CHK_WRITE(chan, hdrbuf, 4);
lseek(chan, update_ssnd_location, SEEK_SET);
mus_lint_to_char((unsigned char *)hdrbuf, (int)size);
CHK_WRITE(chan, hdrbuf, 4);
break;
case MUS_IRCAM:
case MUS_RAW:
/* size is implicit in file size */
break;
case MUS_NIST:
/* read sets current srate, chans, data_format */
lseek(chan, 0L, SEEK_SET);
write_nist_header(chan, mus_header_srate(), mus_header_chans(), size, mus_header_format());
break;
default:
CLOSE(chan, filename);
return(mus_error(MUS_UNSUPPORTED_HEADER_TYPE, "mus_header_change_data_size: can't update %s headers", mus_header_type_name(type)));
break;
}
CLOSE(chan, filename);
return(err);
}
int mus_header_change_chans(const char *filename, int type, int new_chans)
{
int err = MUS_NO_ERROR, fd;
off_t new_frames;
switch (type)
{
case MUS_AIFF:
case MUS_AIFC:
case MUS_NIST:
case MUS_RIFF:
err = mus_header_read(filename);
break;
default:
break;
}
if (err == MUS_ERROR) return(err);
fd = mus_file_reopen_write(filename);
if (fd == -1)
return(mus_error(MUS_CANT_OPEN_FILE, "mus_header_change_chans for %s failed: %s", filename, STRERROR(errno)));
switch (type)
{
case MUS_NEXT:
lseek(fd, 20L, SEEK_SET);
mus_bint_to_char((unsigned char *)hdrbuf, new_chans);
CHK_WRITE(fd, hdrbuf, 4);
break;
case MUS_IRCAM:
lseek(fd, 8L, SEEK_SET);
if (little_endian)
mus_lint_to_char((unsigned char *)hdrbuf, new_chans);
else mus_bint_to_char((unsigned char *)hdrbuf, new_chans);
CHK_WRITE(fd, hdrbuf, 4);
break;
case MUS_NIST:
lseek(fd, 0L, SEEK_SET);
write_nist_header(fd, srate, new_chans, mus_bytes_per_sample(data_format) * data_size, data_format);
/* header size is always 1024, so this is safe */
break;
case MUS_AIFF: case MUS_AIFC:
lseek(fd, update_frames_location - 2, SEEK_SET);
new_frames = data_size / new_chans;
mus_bshort_to_char((unsigned char *)hdrbuf, new_chans);
mus_bint_to_char((unsigned char *)(hdrbuf + 2), new_frames);
CHK_WRITE(fd, hdrbuf, 6);
break;
case MUS_RIFF:
lseek(fd, update_frames_location - 2, SEEK_SET);
if (little_endian)
mus_lshort_to_char((unsigned char *)hdrbuf, new_chans);
else mus_bshort_to_char((unsigned char *)hdrbuf, new_chans);
CHK_WRITE(fd, hdrbuf, 2);
break;
}
CLOSE(fd, filename);
return(err);
}
int mus_header_change_srate(const char *filename, int type, int new_srate)
{
int err = MUS_NO_ERROR, fd;
switch (type)
{
case MUS_AIFF:
case MUS_AIFC:
case MUS_NIST:
case MUS_RIFF:
err = mus_header_read(filename);
break;
default:
break;
}
if (err == MUS_ERROR) return(err);
fd = mus_file_reopen_write(filename);
if (fd == -1)
return(mus_error(MUS_CANT_OPEN_FILE, "mus_header_change_srate for %s failed: %s", filename, STRERROR(errno)));
switch (type)
{
case MUS_NEXT:
lseek(fd, 16L, SEEK_SET);
mus_bint_to_char((unsigned char *)hdrbuf, new_srate);
CHK_WRITE(fd, hdrbuf, 4);
break;
case MUS_IRCAM:
lseek(fd, 4L, SEEK_SET);
if (little_endian)
mus_lfloat_to_char((unsigned char *)hdrbuf, (float)new_srate);
else mus_bfloat_to_char((unsigned char *)hdrbuf, (float)new_srate);
CHK_WRITE(fd, hdrbuf, 4);
break;
case MUS_NIST:
lseek(fd, 0L, SEEK_SET);
write_nist_header(fd, new_srate, chans, mus_bytes_per_sample(data_format) * data_size, data_format);
break;
case MUS_AIFF:
case MUS_AIFC:
lseek(fd, update_frames_location + 6, SEEK_SET);
double_to_ieee_80((double)new_srate, (unsigned char *)hdrbuf);
CHK_WRITE(fd, hdrbuf, 10);
break;
case MUS_RIFF:
lseek(fd, update_frames_location, SEEK_SET);
if (little_endian)
mus_lint_to_char((unsigned char *)hdrbuf, new_srate);
else mus_bint_to_char((unsigned char *)hdrbuf, new_srate);
CHK_WRITE(fd, hdrbuf, 4);
break;
}
CLOSE(fd, filename);
return(err);
}
int mus_header_change_type(const char *filename, int new_type, int new_format)
{
int err = MUS_NO_ERROR;
/* open temp, write header, copy data, replace original with temp */
err = mus_header_read(filename);
if (err == MUS_NO_ERROR)
{
if (header_type != new_type)
{
int ofd, ifd, nbytes;
off_t loc, len = 0;
char *buf = NULL;
char *new_file, *comment = NULL;
new_file = (char *)CALLOC(strlen(filename) + 5, sizeof(char));
sprintf(new_file, "%s.tmp", filename);
loc = mus_header_data_location();
if (new_type != MUS_RAW)
{
if (comment_end > comment_start)
{
len = comment_end - comment_start + 1;
comment = (char *)CALLOC(len + 1, sizeof(char));
ifd = mus_file_open_read(filename);
lseek(ifd, comment_start, SEEK_SET);
CHK_READ(ifd, (unsigned char *)comment, len);
CLOSE(ifd, filename);
}
data_size = data_size * mus_bytes_per_sample(data_format) / mus_bytes_per_sample(new_format);
mus_header_write(new_file, new_type, srate, chans, loc, data_size, new_format, comment, len);
}
else mus_file_create(new_file);
ifd = mus_file_open_read(filename);
lseek(ifd, loc, SEEK_SET);
ofd = mus_file_reopen_write(new_file);
lseek(ofd, 0L, SEEK_END);
buf = (char *)CALLOC(8192, sizeof(char));
while ((nbytes = read(ifd, buf, 8192))) CHK_WRITE(ofd, buf, nbytes);
CLOSE(ifd, filename);
CLOSE(ofd, new_file);
FREE(buf);
if (comment) FREE(comment);
rename(new_file, filename);
FREE(new_file);
}
}
return(err);
}
int mus_header_change_format(const char *filename, int type, int new_format)
{
int err = MUS_NO_ERROR, fd;
off_t old_bytes;
switch (type)
{
case MUS_AIFF:
case MUS_AIFC:
case MUS_NIST:
case MUS_RIFF:
err = mus_header_read(filename);
break;
default:
break;
}
if (err == MUS_ERROR) return(err);
fd = mus_file_reopen_write(filename);
if (fd == -1)
return(mus_error(MUS_CANT_OPEN_FILE, "mus_header_change_format for %s failed: %s", filename, STRERROR(errno)));
switch (type)
{
case MUS_NEXT:
lseek(fd, 12L, SEEK_SET);
mus_bint_to_char((unsigned char *)hdrbuf, sndlib_format_to_next(new_format));
CHK_WRITE(fd, hdrbuf, 4);
break;
case MUS_IRCAM:
lseek(fd, 12L, SEEK_SET);
mus_bint_to_char((unsigned char *)hdrbuf, sndlib_format_to_ircam(new_format));
CHK_WRITE(fd, hdrbuf, 4);
break;
case MUS_NIST:
lseek(fd, 0L, SEEK_SET);
write_nist_header(fd, srate, chans, mus_bytes_per_sample(data_format) * data_size, new_format);
break;
case MUS_AIFF:
case MUS_AIFC:
old_bytes = data_size * mus_bytes_per_sample(data_format);
lseek(fd, update_frames_location, SEEK_SET);
mus_bint_to_char((unsigned char *)hdrbuf, old_bytes / (chans * mus_bytes_per_sample(new_format)));
mus_bshort_to_char((unsigned char *)(hdrbuf + 4), sndlib_format_to_aiff_bits(new_format));
CHK_WRITE(fd, hdrbuf, 6);
if (header_type == MUS_AIFC)
{
const char *str;
str = sndlib_format_to_aifc_name(new_format);
lseek(fd, update_frames_location + 16, SEEK_SET);
write_four_chars((unsigned char *)(hdrbuf + 0), (const unsigned char *)str);
(*(unsigned char *)(hdrbuf + 4)) = 4; /* final pad null not accounted-for */
write_four_chars((unsigned char *)(hdrbuf + 5), (const unsigned char *)str);
(*(unsigned char *)(hdrbuf + 9)) = 0;
CHK_WRITE(fd, hdrbuf, 10);
}
break;
case MUS_RIFF:
lseek(fd, update_frames_location + 24, SEEK_SET);
if (little_endian)
mus_lshort_to_char((unsigned char *)hdrbuf, sndlib_format_to_aiff_bits(new_format));
else mus_bshort_to_char((unsigned char *)hdrbuf, sndlib_format_to_aiff_bits(new_format));
CHK_WRITE(fd, hdrbuf, 2);
lseek(fd, update_frames_location + 10, SEEK_SET);
switch (new_format)
{
case MUS_MULAW:
new_format = 7;
break;
case MUS_ALAW:
new_format = 6;
break;
case MUS_UBYTE:
case MUS_LSHORT: case MUS_L24INT: case MUS_LINT:
case MUS_BSHORT: case MUS_B24INT: case MUS_BINT:
new_format = 1;
break;
case MUS_LFLOAT: case MUS_LDOUBLE:
case MUS_BFLOAT: case MUS_BDOUBLE:
new_format = 3;
break;
}
if (little_endian)
mus_lshort_to_char((unsigned char *)hdrbuf, new_format);
else mus_bshort_to_char((unsigned char *)hdrbuf, new_format);
CHK_WRITE(fd, hdrbuf, 2);
break;
}
CLOSE(fd, filename);
return(err);
}
int mus_header_change_location(const char *filename, int type, off_t new_location)
{
/* only Next/Sun changeable in this regard */
int err = MUS_NO_ERROR, fd;
fd = mus_file_reopen_write(filename);
if (fd == -1)
return(mus_error(MUS_CANT_OPEN_FILE, "mus_header_change_location for %s failed: %s", filename, STRERROR(errno)));
if (type == MUS_NEXT)
{
lseek(fd, 4L, SEEK_SET);
mus_bint_to_char((unsigned char *)hdrbuf, new_location);
CHK_WRITE(fd, hdrbuf, 4);
}
CLOSE(fd, filename);
return(err);
}
int mus_header_change_comment(const char *filename, int type, char *new_comment)
{
int err = MUS_NO_ERROR, fd, len = 0;
bool need_ripple = false;
err = mus_header_read(filename);
if (err == MUS_NO_ERROR)
{
switch (type)
{
case MUS_IRCAM:
fd = mus_file_reopen_write(filename);
lseek(fd, 16L, SEEK_SET);
if (new_comment) len = strlen(new_comment);
write_ircam_comment(fd, new_comment, len);
CLOSE(fd, filename);
break;
case MUS_NEXT:
fd = mus_file_reopen_write(filename);
lseek(fd, 24L, SEEK_SET);
if (new_comment == NULL)
write_next_comment(fd, new_comment, 0, data_location); /* erase old possibly */
else
{
if ((comment_start != comment_end) &&
((int)(data_location - 24) >= (int)strlen(new_comment)))
write_next_comment(fd, new_comment, strlen(new_comment), data_location); /* there's room to overwrite old comment */
else need_ripple = true;
}
CLOSE(fd, filename);
break;
default:
need_ripple = true;
break;
}
if (need_ripple)
{
/* open temp, write header, copy data, replace original with temp */
char *new_file;
int ofd, ifd;
off_t loc;
int nbytes;
char *buf = NULL;
new_file = (char *)CALLOC(strlen(filename) + 5, sizeof(char));
sprintf(new_file, "%s.tmp", filename);
loc = mus_header_data_location();
mus_header_write(new_file, header_type, srate, chans, loc, data_size, data_format, new_comment, (new_comment) ? strlen(new_comment) : 0);
ifd = mus_file_open_read(filename);
lseek(ifd, loc, SEEK_SET);
ofd = mus_file_reopen_write(new_file);
lseek(ofd, 0L, SEEK_END);
buf = (char *)CALLOC(8192, sizeof(char));
while ((nbytes = read(ifd, buf, 8192))) CHK_WRITE(ofd, buf, nbytes);
CLOSE(ifd, filename);
CLOSE(ofd, new_file);
FREE(buf);
rename(new_file, filename);
FREE(new_file);
}
}
return(err);
}
bool mus_header_writable(int type, int format) /* -2 to ignore format for this call */
{
switch (type)
{
case MUS_NEXT:
if (format == MUS_UNKNOWN) return(false);
return(true);
break;
case MUS_NIST:
if (format == -2) return(true);
switch (format)
{
case MUS_BYTE: case MUS_BSHORT: case MUS_B24INT: case MUS_BINT:
case MUS_LSHORT: case MUS_L24INT: case MUS_LINT:
return(true); break;
default:
return(false); break;
}
break;
case MUS_AIFC:
if (format == -2) return(true);
switch (format)
{
case MUS_BSHORT: case MUS_B24INT: case MUS_BINT:
case MUS_BYTE: case MUS_MULAW: case MUS_ALAW:
case MUS_BFLOAT: case MUS_BDOUBLE: case MUS_UBYTE: case MUS_UBSHORT:
case MUS_LSHORT: case MUS_L24INT: case MUS_LINT:
return(true);
break;
default:
return(false);
break;
}
break;
case MUS_AIFF:
if (format == -2) return(true);
switch (format)
{
case MUS_BSHORT: case MUS_B24INT: case MUS_BINT: case MUS_BYTE:
return(true);
break;
default:
return(false);
break;
}
break;
case MUS_RIFF:
if (format == -2) return(true);
switch (format)
{
case MUS_MULAW: case MUS_ALAW: case MUS_UBYTE: case MUS_LFLOAT:
case MUS_LSHORT: case MUS_L24INT: case MUS_LINT: case MUS_LDOUBLE:
return(true);
break;
default:
return(false);
break;
}
break;
case MUS_IRCAM:
if (format == -2) return(true);
switch (format)
{
case MUS_MULAW: case MUS_ALAW: case MUS_BSHORT: case MUS_BINT: case MUS_BFLOAT:
return(true);
break;
default:
return(false);
break;
}
break;
case MUS_RAW:
return(true);
break;
default: return(false); break;
}
return(false);
}
static char aifc_format[5];
/* try to give some info on data formats that aren't supported by sndlib */
const char *mus_header_original_format_name(int format, int type)
{
switch (type)
{
case MUS_NEXT:
switch (format)
{
case 0: return("unspecified"); break; case 8: return("indirect"); break; case 9: return("nested"); break;
case 10: return("dsp_core"); break; case 11: return("dsp_data_8"); break; case 12: return("dsp_data_16"); break;
case 13: return("dsp_data_24"); break; case 14: return("dsp_data_32"); break; case 16: return("display"); break;
case 17: return("mulaw_squelch"); break; case 18: return("emphasized"); break; case 19: return("compressed"); break;
case 20: return("compressed_emphasized"); break; case 21: return("dsp_commands"); break; case 22: return("dsp_commands_samples"); break;
case 23: return("adpcm_g721"); break; case 24: return("adpcm_g722"); break; case 25: return("adpcm_g723"); break;
case 26: return("adpcm_g723_5"); break; case 28: return("aes"); break; case 29: return("delat_mulaw_8"); break;
}
break;
case MUS_AIFC:
aifc_format[4] = 0;
#if MUS_LITTLE_ENDIAN
sprintf(aifc_format, "%c%c%c%c", format & 0xff, (format >> 8) & 0xff, (format >> 16) & 0xff, (format >> 24) & 0xff);
#else
sprintf(aifc_format, "%c%c%c%c", (format >> 24) & 0xff, (format >> 16) & 0xff, (format >> 8) & 0xff, format & 0xff);
#endif
return(aifc_format);
break;
case MUS_PVF:
if (type_specifier == mus_char_to_uninterpreted_int((unsigned const char *)I_PVF2))
return("ascii text");
break;
case MUS_RIFF:
switch (format)
{
case 2: return("ADPCM"); break; case 4: return("VSELP"); break; case 5: return("IBM_CVSD"); break;
case 0x10: return("OKI_ADPCM"); break; case 0x11: return("DVI_ADPCM"); break; case 0x12: return("MediaSpace_ADPCM"); break;
case 0x13: return("Sierra_ADPCM"); break; case 0x14: return("G723_ADPCM"); break; case 0x15: return("DIGISTD"); break;
case 0x16: return("DIGIFIX"); break; case 0x17: return("Dialogic ADPCM"); break; case 0x18: return("Mediavision ADPCM"); break;
case 0x19: return("HP cu codec"); break; case 0x20: return("Yamaha_ADPCM"); break; case 0x21: return("SONARC"); break;
case 0x22: return("DSPGroup_TrueSpeech"); break; case 0x23: return("EchoSC1"); break; case 0x24: return("AudioFile_AF36"); break;
case 0x25: return("APTX"); break; case 0x26: return("AudioFile_AF10"); break; case 0x27: return("prosody 1612"); break;
case 0x28: return("lrc"); break; case 0x30: return("Dolby_Ac2"); break; case 0x31: return("GSM610"); break;
case 0x32: return("MSN audio codec"); break; case 0x33: return("Antext_ADPCM"); break; case 0x34: return("Control_res_vqlpc"); break;
case 0x35: return("DIGIREAL"); break; case 0x36: return("DIGIADPCM"); break; case 0x37: return("Control_res_cr10"); break;
case 0x38: return("NMS_VBXADPCM"); break; case 0x39: return("oland rdac"); break; case 0x3a: return("echo sc3"); break;
case 0x3b: return("Rockwell adpcm"); break; case 0x3c: return("Rockwell digitalk codec"); break; case 0x3d: return("Xebec"); break;
case 0x40: return("G721_ADPCM"); break; case 0x41: return("G728 CELP"); break; case 0x42: return("MS G723"); break;
case 0x50: return("MPEG"); break; case 0x52: return("RT24"); break; case 0x53: return("PAC"); break;
case 0x55: return("Mpeg layer 3"); break; case 0x59: return("Lucent G723"); break; case 0x60: return("Cirrus"); break;
case 0x61: return("ESS Tech pcm"); break; case 0x62: return("voxware "); break; case 0x63: return("canopus atrac"); break;
case 0x64: return("G726"); break; case 0x65: return("G722"); break; case 0x66: return("DSAT"); break;
case 0x67: return("DSAT display"); break; case 0x69: return("voxware "); break; case 0x70: return("voxware ac8 "); break;
case 0x71: return("voxware ac10 "); break; case 0x72: return("voxware ac16"); break; case 0x73: return("voxware ac20"); break;
case 0x74: return("voxware rt24"); break; case 0x75: return("voxware rt29"); break; case 0x76: return("voxware rt29hw"); break;
case 0x77: return("voxware vr12 "); break; case 0x78: return("voxware vr18"); break; case 0x79: return("voxware tq40"); break;
case 0x80: return("softsound"); break; case 0x81: return("voxware tq60 "); break; case 0x82: return("MS RT24"); break;
case 0x83: return("G729A"); break; case 0x84: return("MVI_MVI2"); break; case 0x85: return("DF G726"); break;
case 0x86: return("DF GSM610"); break; case 0x88: return("isaudio"); break; case 0x89: return("onlive"); break;
case 0x91: return("sbc24"); break; case 0x92: return("dolby ac3 spdif"); break; case 0x97: return("zyxel adpcm"); break;
case 0x98: return("philips lpcbb"); break; case 0x99: return("packed"); break; case 0x100: return("rhetorex adpcm"); break;
case 0x101: return("Irat"); break; case 0x102: return("IBM_alaw?"); break; case 0x103: return("IBM_ADPCM?"); break;
case 0x111: return("vivo G723"); break; case 0x112: return("vivo siren"); break; case 0x123: return("digital g273"); break;
case 0x200: return("Creative_ADPCM"); break; case 0x202: return("Creative fastspeech 8"); break;
case 0x203: return("Creative fastspeech 10"); break;
case 0x220: return("quarterdeck"); break; case 0x300: return("FM_TOWNS_SND"); break; case 0x400: return("BTV digital"); break;
case 0x680: return("VME vmpcm"); break; case 0x1000: return("OLIGSM"); break; case 0x1001: return("OLIADPCM"); break;
case 0x1002: return("OLICELP"); break; case 0x1003: return("OLISBC"); break; case 0x1004: return("OLIOPR"); break;
case 0x1100: return("LH codec"); break; case 0x1400: return("Norris"); break; case 0x1401: return("isaudio"); break;
case 0x1500: return("Soundspace musicompression"); break; case 0x2000: return("DVM"); break;
}
break;
}
return("unknown"); /* NULL here isn't safe -- Sun segfaults */
}
bool mus_header_no_header(const char *filename)
{
int chan, bytes;
bool ok = false;
chan = mus_file_open_read(filename);
if (chan == -1)
return(mus_error(MUS_CANT_OPEN_FILE, "mus_header: can't open %s: %s", filename, STRERROR(errno)));
bytes = read(chan, hdrbuf, INITIAL_READ_SIZE);
CLOSE(chan, filename);
if (bytes > 4)
ok = ((match_four_chars((unsigned char *)hdrbuf, I_DSND)) ||
(match_four_chars((unsigned char *)hdrbuf, I_DECN)) ||
(match_four_chars((unsigned char *)hdrbuf, I_FORM)) ||
(match_four_chars((unsigned char *)hdrbuf, I_RIFF)) ||
(match_four_chars((unsigned char *)hdrbuf, I_RIFX)) ||
(equal_big_or_little_endian((unsigned char *)hdrbuf, I_IRCAM_VAX)) ||
(equal_big_or_little_endian((unsigned char *)hdrbuf, I_IRCAM_SUN)) ||
(equal_big_or_little_endian((unsigned char *)hdrbuf, I_IRCAM_MIPS)) ||
(equal_big_or_little_endian((unsigned char *)hdrbuf, I_IRCAM_NEXT)) ||
(match_four_chars((unsigned char *)hdrbuf, I_NIST)) ||
(match_four_chars((unsigned char *)hdrbuf, I_SOUN)) ||
(match_four_chars((unsigned char *)hdrbuf, I_VOC0)) ||
(match_four_chars((unsigned char *)hdrbuf, I_AVR_)) ||
(mus_char_to_bshort((unsigned char *)hdrbuf) == 1336) ||
(match_four_chars((unsigned char *)hdrbuf, I_ALaw)) ||
(match_four_chars((unsigned char *)hdrbuf, I_GF1P)) ||
(match_four_chars((unsigned char *)hdrbuf, I_DSIG)) ||
(match_four_chars((unsigned char *)hdrbuf, I_GOLD)) ||
(match_four_chars((unsigned char *)hdrbuf, I_Diam)) ||
(match_four_chars((unsigned char *)hdrbuf, I_SRFS)) ||
(match_four_chars((unsigned char *)hdrbuf, I_CSRE)) ||
(match_four_chars((unsigned char *)hdrbuf, I_file)) ||
((hdrbuf[0] == 0xf0) && (hdrbuf[1] == 0x7e) && (hdrbuf[3] == 0x01)) ||
(equal_big_or_little_endian((unsigned char *)(hdrbuf + 16), 0x00006a1a)) ||
(match_four_chars((unsigned char *)hdrbuf, I_SPIB)) ||
(match_four_chars((unsigned char *)hdrbuf, I_S___)) ||
(match_four_chars((unsigned char *)hdrbuf, I_riff)) ||
(match_four_chars((unsigned char *)hdrbuf, I_PVF1)) ||
(match_four_chars((unsigned char *)hdrbuf, I_PVF2)) ||
(match_four_chars((unsigned char *)hdrbuf, I_MThd)) ||
(match_four_chars((unsigned char *)hdrbuf, I_SND_)) ||
(match_four_chars((unsigned char *)hdrbuf, I_FSMt)) ||
(match_four_chars((unsigned char *)hdrbuf, I_DDSF)) ||
(match_four_chars((unsigned char *)hdrbuf, I_LM89)) ||
(match_four_chars((unsigned char *)hdrbuf, I_SY85)) ||
(match_four_chars((unsigned char *)hdrbuf, I_SY80)) ||
(match_four_chars((unsigned char *)hdrbuf, I_PRAM)) ||
(match_four_chars((unsigned char *)(hdrbuf + 35), I_UWFD)) ||
(match_four_chars((unsigned char *)(hdrbuf + 76), I_SCRS)) ||
(match_four_chars((unsigned char *)hdrbuf, I_covox)) ||
(match_four_chars((unsigned char *)hdrbuf, I__PAF)) ||
(match_four_chars((unsigned char *)hdrbuf, I_FAP_)) ||
(match_four_chars((unsigned char *)hdrbuf, I_TWIN)) ||
(match_four_chars((unsigned char *)hdrbuf, I_IMPS)) ||
(match_four_chars((unsigned char *)hdrbuf, I_SMP1)) ||
(match_four_chars((unsigned char *)hdrbuf, I_Maui)) ||
(match_four_chars((unsigned char *)hdrbuf, I_SDIF)) ||
(match_four_chars((unsigned char *)hdrbuf, I_ajkg)) ||
(match_four_chars((unsigned char *)hdrbuf, I_NVF_)));
return(!ok);
}
void mus_header_set_aiff_loop_info(int *data)
{
/* include modes */
if (data)
{
loop_starts[0] = data[0];
loop_ends[0] = data[1];
loop_starts[1] = data[2];
loop_ends[1] = data[3];
base_note = data[4];
base_detune = data[5];
loop_modes[0] = data[6];
loop_modes[1] = data[7];
}
else
{
loop_modes[0] = 0;
loop_modes[1] = 0;
}
}