Alexandre Lision | 7c6f4a6 | 2013-09-05 13:27:01 -0400 | [diff] [blame] | 1 | /* |
| 2 | ** Copyright (C) 2002-2011 Erik de Castro Lopo <erikd@mega-nerd.com> |
| 3 | ** |
| 4 | ** This program is free software; you can redistribute it and/or modify |
| 5 | ** it under the terms of the GNU Lesser General Public License as published by |
| 6 | ** the Free Software Foundation; either version 2.1 of the License, or |
| 7 | ** (at your option) any later version. |
| 8 | ** |
| 9 | ** This program is distributed in the hope that it will be useful, |
| 10 | ** but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 11 | ** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 12 | ** GNU Lesser General Public License for more details. |
| 13 | ** |
| 14 | ** You should have received a copy of the GNU Lesser General Public License |
| 15 | ** along with this program; if not, write to the Free Software |
| 16 | ** Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. |
| 17 | */ |
| 18 | |
| 19 | #include "sfconfig.h" |
| 20 | |
| 21 | #include <stdio.h> |
| 22 | #include <fcntl.h> |
| 23 | #include <string.h> |
| 24 | #include <ctype.h> |
| 25 | |
| 26 | #include "sndfile.h" |
| 27 | #include "sfendian.h" |
| 28 | #include "common.h" |
| 29 | |
| 30 | #if (ENABLE_EXPERIMENTAL_CODE == 0) |
| 31 | |
| 32 | int |
| 33 | dwd_open (SF_PRIVATE *psf) |
| 34 | { if (psf) |
| 35 | return SFE_UNIMPLEMENTED ; |
| 36 | return 0 ; |
| 37 | } /* dwd_open */ |
| 38 | |
| 39 | #else |
| 40 | |
| 41 | /*------------------------------------------------------------------------------ |
| 42 | ** Macros to handle big/little endian issues. |
| 43 | */ |
| 44 | |
| 45 | #define SFE_DWD_NO_DWD 1666 |
| 46 | #define SFE_DWD_BAND_BIT_WIDTH 1667 |
| 47 | #define SFE_DWD_COMPRESSION 1668 |
| 48 | |
| 49 | #define DWD_IDENTIFIER "DiamondWare Digitized\n\0\x1a" |
| 50 | #define DWD_IDENTIFIER_LEN 24 |
| 51 | |
| 52 | #define DWD_HEADER_LEN 57 |
| 53 | |
| 54 | /*------------------------------------------------------------------------------ |
| 55 | ** Typedefs. |
| 56 | */ |
| 57 | |
| 58 | /*------------------------------------------------------------------------------ |
| 59 | ** Private static functions. |
| 60 | */ |
| 61 | |
| 62 | static int dwd_read_header (SF_PRIVATE *psf) ; |
| 63 | |
| 64 | static int dwd_close (SF_PRIVATE *psf) ; |
| 65 | |
| 66 | /*------------------------------------------------------------------------------ |
| 67 | ** Public function. |
| 68 | */ |
| 69 | |
| 70 | int |
| 71 | dwd_open (SF_PRIVATE *psf) |
| 72 | { int error = 0 ; |
| 73 | |
| 74 | if (psf->file.mode == SFM_READ || (psf->file.mode == SFM_RDWR && psf->filelength > 0)) |
| 75 | { if ((error = dwd_read_header (psf))) |
| 76 | return error ; |
| 77 | } ; |
| 78 | |
| 79 | if ((SF_CONTAINER (psf->sf.format)) != SF_FORMAT_DWD) |
| 80 | return SFE_BAD_OPEN_FORMAT ; |
| 81 | |
| 82 | if (psf->file.mode == SFM_WRITE || psf->file.mode == SFM_RDWR) |
| 83 | { |
| 84 | /*-psf->endian = SF_ENDIAN (psf->sf.format) ; |
| 85 | if (CPU_IS_LITTLE_ENDIAN && psf->endian == SF_ENDIAN_CPU) |
| 86 | psf->endian = SF_ENDIAN_LITTLE ; |
| 87 | else if (psf->endian != SF_ENDIAN_LITTLE) |
| 88 | psf->endian = SF_ENDIAN_BIG ; |
| 89 | |
| 90 | if (! (encoding = dwd_write_header (psf, SF_FALSE))) |
| 91 | return psf->error ; |
| 92 | |
| 93 | psf->write_header = dwd_write_header ; |
| 94 | -*/ |
| 95 | } ; |
| 96 | |
| 97 | psf->container_close = dwd_close ; |
| 98 | |
| 99 | /*-psf->blockwidth = psf->bytewidth * psf->sf.channels ;-*/ |
| 100 | |
| 101 | return error ; |
| 102 | } /* dwd_open */ |
| 103 | |
| 104 | /*------------------------------------------------------------------------------ |
| 105 | */ |
| 106 | |
| 107 | static int |
| 108 | dwd_close (SF_PRIVATE * UNUSED (psf)) |
| 109 | { |
| 110 | return 0 ; |
| 111 | } /* dwd_close */ |
| 112 | |
| 113 | /* This struct contains all the fields of interest om the DWD header, but does not |
| 114 | ** do so in the same order and layout as the actual file, header. |
| 115 | ** No assumptions are made about the packing of this struct. |
| 116 | */ |
| 117 | typedef struct |
| 118 | { unsigned char major, minor, compression, channels, bitwidth ; |
| 119 | unsigned short srate, maxval ; |
| 120 | unsigned int id, datalen, frames, offset ; |
| 121 | } DWD_HEADER ; |
| 122 | |
| 123 | static int |
| 124 | dwd_read_header (SF_PRIVATE *psf) |
| 125 | { DWD_HEADER dwdh ; |
| 126 | |
| 127 | memset (psf->u.cbuf, 0, sizeof (psf->u.cbuf)) ; |
| 128 | /* Set position to start of file to begin reading header. */ |
| 129 | psf_binheader_readf (psf, "pb", 0, psf->u.cbuf, DWD_IDENTIFIER_LEN) ; |
| 130 | |
| 131 | if (memcmp (psf->u.cbuf, DWD_IDENTIFIER, DWD_IDENTIFIER_LEN) != 0) |
| 132 | return SFE_DWD_NO_DWD ; |
| 133 | |
| 134 | psf_log_printf (psf, "Read only : DiamondWare Digitized (.dwd)\n", psf->u.cbuf) ; |
| 135 | |
| 136 | psf_binheader_readf (psf, "11", &dwdh.major, &dwdh.minor) ; |
| 137 | psf_binheader_readf (psf, "e4j1", &dwdh.id, 1, &dwdh.compression) ; |
| 138 | psf_binheader_readf (psf, "e211", &dwdh.srate, &dwdh.channels, &dwdh.bitwidth) ; |
| 139 | psf_binheader_readf (psf, "e24", &dwdh.maxval, &dwdh.datalen) ; |
| 140 | psf_binheader_readf (psf, "e44", &dwdh.frames, &dwdh.offset) ; |
| 141 | |
| 142 | psf_log_printf (psf, " Version Major : %d\n Version Minor : %d\n Unique ID : %08X\n", |
| 143 | dwdh.major, dwdh.minor, dwdh.id) ; |
| 144 | psf_log_printf (psf, " Compression : %d => ", dwdh.compression) ; |
| 145 | |
| 146 | if (dwdh.compression != 0) |
| 147 | { psf_log_printf (psf, "Unsupported compression\n") ; |
| 148 | return SFE_DWD_COMPRESSION ; |
| 149 | } |
| 150 | else |
| 151 | psf_log_printf (psf, "None\n") ; |
| 152 | |
| 153 | psf_log_printf (psf, " Sample Rate : %d\n Channels : %d\n" |
| 154 | " Bit Width : %d\n", |
| 155 | dwdh.srate, dwdh.channels, dwdh.bitwidth) ; |
| 156 | |
| 157 | switch (dwdh.bitwidth) |
| 158 | { case 8 : |
| 159 | psf->sf.format = SF_FORMAT_DWD | SF_FORMAT_PCM_S8 ; |
| 160 | psf->bytewidth = 1 ; |
| 161 | break ; |
| 162 | |
| 163 | case 16 : |
| 164 | psf->sf.format = SF_FORMAT_DWD | SF_FORMAT_PCM_16 ; |
| 165 | psf->bytewidth = 2 ; |
| 166 | break ; |
| 167 | |
| 168 | default : |
| 169 | psf_log_printf (psf, "*** Bad bit width %d\n", dwdh.bitwidth) ; |
| 170 | return SFE_DWD_BAND_BIT_WIDTH ; |
| 171 | } ; |
| 172 | |
| 173 | if (psf->filelength != dwdh.offset + dwdh.datalen) |
| 174 | { psf_log_printf (psf, " Data Length : %d (should be %D)\n", dwdh.datalen, psf->filelength - dwdh.offset) ; |
| 175 | dwdh.datalen = (unsigned int) (psf->filelength - dwdh.offset) ; |
| 176 | } |
| 177 | else |
| 178 | psf_log_printf (psf, " Data Length : %d\n", dwdh.datalen) ; |
| 179 | |
| 180 | psf_log_printf (psf, " Max Value : %d\n", dwdh.maxval) ; |
| 181 | psf_log_printf (psf, " Frames : %d\n", dwdh.frames) ; |
| 182 | psf_log_printf (psf, " Data Offset : %d\n", dwdh.offset) ; |
| 183 | |
| 184 | psf->datalength = dwdh.datalen ; |
| 185 | psf->dataoffset = dwdh.offset ; |
| 186 | |
| 187 | psf->endian = SF_ENDIAN_LITTLE ; |
| 188 | |
| 189 | psf->sf.samplerate = dwdh.srate ; |
| 190 | psf->sf.channels = dwdh.channels ; |
| 191 | psf->sf.sections = 1 ; |
| 192 | |
| 193 | return pcm_init (psf) ; |
| 194 | } /* dwd_read_header */ |
| 195 | |
| 196 | /*------------------------------------------------------------------------------ |
| 197 | */ |
| 198 | |
| 199 | #endif |
| 200 | |