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 | /*=========================================================================== |
| 20 | ** Yamaha TX16 Sampler Files. |
| 21 | ** |
| 22 | ** This header parser was written using information from the SoX source code |
| 23 | ** and trial and error experimentation. The code here however is all original. |
| 24 | */ |
| 25 | |
| 26 | #include "sfconfig.h" |
| 27 | |
| 28 | #include <stdio.h> |
| 29 | #include <fcntl.h> |
| 30 | #include <string.h> |
| 31 | #include <ctype.h> |
| 32 | |
| 33 | #include "sndfile.h" |
| 34 | #include "sfendian.h" |
| 35 | #include "common.h" |
| 36 | |
| 37 | #if (ENABLE_EXPERIMENTAL_CODE == 0) |
| 38 | |
| 39 | int |
| 40 | txw_open (SF_PRIVATE *psf) |
| 41 | { if (psf) |
| 42 | return SFE_UNIMPLEMENTED ; |
| 43 | return 0 ; |
| 44 | } /* txw_open */ |
| 45 | |
| 46 | #else |
| 47 | |
| 48 | /*------------------------------------------------------------------------------ |
| 49 | ** Markers. |
| 50 | */ |
| 51 | |
| 52 | #define TXW_DATA_OFFSET 32 |
| 53 | |
| 54 | #define TXW_LOOPED 0x49 |
| 55 | #define TXW_NO_LOOP 0xC9 |
| 56 | |
| 57 | /*------------------------------------------------------------------------------ |
| 58 | ** Private static functions. |
| 59 | */ |
| 60 | |
| 61 | static int txw_read_header (SF_PRIVATE *psf) ; |
| 62 | |
| 63 | static sf_count_t txw_read_s (SF_PRIVATE *psf, short *ptr, sf_count_t len) ; |
| 64 | static sf_count_t txw_read_i (SF_PRIVATE *psf, int *ptr, sf_count_t len) ; |
| 65 | static sf_count_t txw_read_f (SF_PRIVATE *psf, float *ptr, sf_count_t len) ; |
| 66 | static sf_count_t txw_read_d (SF_PRIVATE *psf, double *ptr, sf_count_t len) ; |
| 67 | |
| 68 | static sf_count_t txw_seek (SF_PRIVATE *psf, int mode, sf_count_t offset) ; |
| 69 | |
| 70 | /*------------------------------------------------------------------------------ |
| 71 | ** Public functions. |
| 72 | */ |
| 73 | |
| 74 | /* |
| 75 | * ftp://ftp.t0.or.at/pub/sound/tx16w/samples.yamaha |
| 76 | * ftp://ftp.t0.or.at/pub/sound/tx16w/faq/tx16w.tec |
| 77 | * http://www.t0.or.at/~mpakesch/tx16w/ |
| 78 | * |
| 79 | * from tx16w.c sox 12.15: (7-Oct-98) (Mark Lakata and Leigh Smith) |
| 80 | * char filetype[6] "LM8953" |
| 81 | * nulls[10], |
| 82 | * dummy_aeg[6] |
| 83 | * format 0x49 = looped, 0xC9 = non-looped |
| 84 | * sample_rate 1 = 33 kHz, 2 = 50 kHz, 3 = 16 kHz |
| 85 | * atc_length[3] if sample rate 0, [2]&0xfe = 6: 33kHz, 0x10:50, 0xf6: 16, |
| 86 | * depending on [5] but to heck with it |
| 87 | * rpt_length[3] (these are for looped samples, attack and loop lengths) |
| 88 | * unused[2] |
| 89 | */ |
| 90 | |
| 91 | typedef struct |
| 92 | { unsigned char format, srate, sr2, sr3 ; |
| 93 | unsigned short srhash ; |
| 94 | unsigned int attacklen, repeatlen ; |
| 95 | } TXW_HEADER ; |
| 96 | |
| 97 | #define ERROR_666 666 |
| 98 | |
| 99 | int |
| 100 | txw_open (SF_PRIVATE *psf) |
| 101 | { int error ; |
| 102 | |
| 103 | if (psf->file.mode != SFM_READ) |
| 104 | return SFE_UNIMPLEMENTED ; |
| 105 | |
| 106 | if ((error = txw_read_header (psf))) |
| 107 | return error ; |
| 108 | |
| 109 | if (psf_fseek (psf, psf->dataoffset, SEEK_SET) != psf->dataoffset) |
| 110 | return SFE_BAD_SEEK ; |
| 111 | |
| 112 | psf->read_short = txw_read_s ; |
| 113 | psf->read_int = txw_read_i ; |
| 114 | psf->read_float = txw_read_f ; |
| 115 | psf->read_double = txw_read_d ; |
| 116 | |
| 117 | psf->seek = txw_seek ; |
| 118 | |
| 119 | return 0 ; |
| 120 | } /* txw_open */ |
| 121 | |
| 122 | /*------------------------------------------------------------------------------ |
| 123 | */ |
| 124 | |
| 125 | static int |
| 126 | txw_read_header (SF_PRIVATE *psf) |
| 127 | { TXW_HEADER txwh ; |
| 128 | const char *strptr ; |
| 129 | |
| 130 | memset (&txwh, 0, sizeof (txwh)) ; |
| 131 | memset (psf->u.cbuf, 0, sizeof (psf->u.cbuf)) ; |
| 132 | psf_binheader_readf (psf, "pb", 0, psf->u.cbuf, 16) ; |
| 133 | |
| 134 | if (memcmp (psf->u.cbuf, "LM8953\0\0\0\0\0\0\0\0\0\0", 16) != 0) |
| 135 | return ERROR_666 ; |
| 136 | |
| 137 | psf_log_printf (psf, "Read only : Yamaha TX-16 Sampler (.txw)\nLM8953\n") ; |
| 138 | |
| 139 | /* Jump 6 bytes (dummp_aeg), read format, read sample rate. */ |
| 140 | psf_binheader_readf (psf, "j11", 6, &txwh.format, &txwh.srate) ; |
| 141 | |
| 142 | /* 8 bytes (atc_length[3], rpt_length[3], unused[2]). */ |
| 143 | psf_binheader_readf (psf, "e33j", &txwh.attacklen, &txwh.repeatlen, 2) ; |
| 144 | txwh.sr2 = (txwh.attacklen >> 16) & 0xFE ; |
| 145 | txwh.sr3 = (txwh.repeatlen >> 16) & 0xFE ; |
| 146 | txwh.attacklen &= 0x1FFFF ; |
| 147 | txwh.repeatlen &= 0x1FFFF ; |
| 148 | |
| 149 | switch (txwh.format) |
| 150 | { case TXW_LOOPED : |
| 151 | strptr = "looped" ; |
| 152 | break ; |
| 153 | |
| 154 | case TXW_NO_LOOP : |
| 155 | strptr = "non-looped" ; |
| 156 | break ; |
| 157 | |
| 158 | default : |
| 159 | psf_log_printf (psf, " Format : 0x%02x => ?????\n", txwh.format) ; |
| 160 | return ERROR_666 ; |
| 161 | } ; |
| 162 | |
| 163 | psf_log_printf (psf, " Format : 0x%02X => %s\n", txwh.format, strptr) ; |
| 164 | |
| 165 | strptr = NULL ; |
| 166 | |
| 167 | switch (txwh.srate) |
| 168 | { case 1 : |
| 169 | psf->sf.samplerate = 33333 ; |
| 170 | break ; |
| 171 | |
| 172 | case 2 : |
| 173 | psf->sf.samplerate = 50000 ; |
| 174 | break ; |
| 175 | |
| 176 | case 3 : |
| 177 | psf->sf.samplerate = 16667 ; |
| 178 | break ; |
| 179 | |
| 180 | default : |
| 181 | /* This is ugly and braindead. */ |
| 182 | txwh.srhash = ((txwh.sr2 & 0xFE) << 8) | (txwh.sr3 & 0xFE) ; |
| 183 | switch (txwh.srhash) |
| 184 | { case ((0x6 << 8) | 0x52) : |
| 185 | psf->sf.samplerate = 33333 ; |
| 186 | break ; |
| 187 | |
| 188 | case ((0x10 << 8) | 0x52) : |
| 189 | psf->sf.samplerate = 50000 ; |
| 190 | break ; |
| 191 | |
| 192 | case ((0xF6 << 8) | 0x52) : |
| 193 | psf->sf.samplerate = 166667 ; |
| 194 | break ; |
| 195 | |
| 196 | default : |
| 197 | strptr = " Sample Rate : Unknown : forcing to 33333\n" ; |
| 198 | psf->sf.samplerate = 33333 ; |
| 199 | break ; |
| 200 | } ; |
| 201 | } ; |
| 202 | |
| 203 | |
| 204 | if (strptr) |
| 205 | psf_log_printf (psf, strptr) ; |
| 206 | else if (txwh.srhash) |
| 207 | psf_log_printf (psf, " Sample Rate : %d (0x%X) => %d\n", txwh.srate, txwh.srhash, psf->sf.samplerate) ; |
| 208 | else |
| 209 | psf_log_printf (psf, " Sample Rate : %d => %d\n", txwh.srate, psf->sf.samplerate) ; |
| 210 | |
| 211 | if (txwh.format == TXW_LOOPED) |
| 212 | { psf_log_printf (psf, " Attack Len : %d\n", txwh.attacklen) ; |
| 213 | psf_log_printf (psf, " Repeat Len : %d\n", txwh.repeatlen) ; |
| 214 | } ; |
| 215 | |
| 216 | psf->dataoffset = TXW_DATA_OFFSET ; |
| 217 | psf->datalength = psf->filelength - TXW_DATA_OFFSET ; |
| 218 | psf->sf.frames = 2 * psf->datalength / 3 ; |
| 219 | |
| 220 | |
| 221 | if (psf->datalength % 3 == 1) |
| 222 | psf_log_printf (psf, "*** File seems to be truncated, %d extra bytes.\n", |
| 223 | (int) (psf->datalength % 3)) ; |
| 224 | |
| 225 | if (txwh.attacklen + txwh.repeatlen > psf->sf.frames) |
| 226 | psf_log_printf (psf, "*** File has been truncated.\n") ; |
| 227 | |
| 228 | psf->sf.format = SF_FORMAT_TXW | SF_FORMAT_PCM_16 ; |
| 229 | psf->sf.channels = 1 ; |
| 230 | psf->sf.sections = 1 ; |
| 231 | psf->sf.seekable = SF_TRUE ; |
| 232 | |
| 233 | return 0 ; |
| 234 | } /* txw_read_header */ |
| 235 | |
| 236 | static sf_count_t |
| 237 | txw_read_s (SF_PRIVATE *psf, short *ptr, sf_count_t len) |
| 238 | { unsigned char *ucptr ; |
| 239 | short sample ; |
| 240 | int k, bufferlen, readcount, count ; |
| 241 | sf_count_t total = 0 ; |
| 242 | |
| 243 | bufferlen = sizeof (psf->u.cbuf) / 3 ; |
| 244 | bufferlen -= (bufferlen & 1) ; |
| 245 | while (len > 0) |
| 246 | { readcount = (len >= bufferlen) ? bufferlen : len ; |
| 247 | count = psf_fread (psf->u.cbuf, 3, readcount, psf) ; |
| 248 | |
| 249 | ucptr = psf->u.ucbuf ; |
| 250 | for (k = 0 ; k < readcount ; k += 2) |
| 251 | { sample = (ucptr [0] << 8) | (ucptr [1] & 0xF0) ; |
| 252 | ptr [total + k] = sample ; |
| 253 | sample = (ucptr [2] << 8) | ((ucptr [1] & 0xF) << 4) ; |
| 254 | ptr [total + k + 1] = sample ; |
| 255 | ucptr += 3 ; |
| 256 | } ; |
| 257 | |
| 258 | total += count ; |
| 259 | len -= readcount ; |
| 260 | } ; |
| 261 | |
| 262 | return total ; |
| 263 | } /* txw_read_s */ |
| 264 | |
| 265 | static sf_count_t |
| 266 | txw_read_i (SF_PRIVATE *psf, int *ptr, sf_count_t len) |
| 267 | { unsigned char *ucptr ; |
| 268 | short sample ; |
| 269 | int k, bufferlen, readcount, count ; |
| 270 | sf_count_t total = 0 ; |
| 271 | |
| 272 | bufferlen = sizeof (psf->u.cbuf) / 3 ; |
| 273 | bufferlen -= (bufferlen & 1) ; |
| 274 | while (len > 0) |
| 275 | { readcount = (len >= bufferlen) ? bufferlen : len ; |
| 276 | count = psf_fread (psf->u.cbuf, 3, readcount, psf) ; |
| 277 | |
| 278 | ucptr = psf->u.ucbuf ; |
| 279 | for (k = 0 ; k < readcount ; k += 2) |
| 280 | { sample = (ucptr [0] << 8) | (ucptr [1] & 0xF0) ; |
| 281 | ptr [total + k] = sample << 16 ; |
| 282 | sample = (ucptr [2] << 8) | ((ucptr [1] & 0xF) << 4) ; |
| 283 | ptr [total + k + 1] = sample << 16 ; |
| 284 | ucptr += 3 ; |
| 285 | } ; |
| 286 | |
| 287 | total += count ; |
| 288 | len -= readcount ; |
| 289 | } ; |
| 290 | |
| 291 | return total ; |
| 292 | } /* txw_read_i */ |
| 293 | |
| 294 | static sf_count_t |
| 295 | txw_read_f (SF_PRIVATE *psf, float *ptr, sf_count_t len) |
| 296 | { unsigned char *ucptr ; |
| 297 | short sample ; |
| 298 | int k, bufferlen, readcount, count ; |
| 299 | sf_count_t total = 0 ; |
| 300 | float normfact ; |
| 301 | |
| 302 | if (psf->norm_float == SF_TRUE) |
| 303 | normfact = 1.0 / 0x8000 ; |
| 304 | else |
| 305 | normfact = 1.0 / 0x10 ; |
| 306 | |
| 307 | bufferlen = sizeof (psf->u.cbuf) / 3 ; |
| 308 | bufferlen -= (bufferlen & 1) ; |
| 309 | while (len > 0) |
| 310 | { readcount = (len >= bufferlen) ? bufferlen : len ; |
| 311 | count = psf_fread (psf->u.cbuf, 3, readcount, psf) ; |
| 312 | |
| 313 | ucptr = psf->u.ucbuf ; |
| 314 | for (k = 0 ; k < readcount ; k += 2) |
| 315 | { sample = (ucptr [0] << 8) | (ucptr [1] & 0xF0) ; |
| 316 | ptr [total + k] = normfact * sample ; |
| 317 | sample = (ucptr [2] << 8) | ((ucptr [1] & 0xF) << 4) ; |
| 318 | ptr [total + k + 1] = normfact * sample ; |
| 319 | ucptr += 3 ; |
| 320 | } ; |
| 321 | |
| 322 | total += count ; |
| 323 | len -= readcount ; |
| 324 | } ; |
| 325 | |
| 326 | return total ; |
| 327 | } /* txw_read_f */ |
| 328 | |
| 329 | static sf_count_t |
| 330 | txw_read_d (SF_PRIVATE *psf, double *ptr, sf_count_t len) |
| 331 | { unsigned char *ucptr ; |
| 332 | short sample ; |
| 333 | int k, bufferlen, readcount, count ; |
| 334 | sf_count_t total = 0 ; |
| 335 | double normfact ; |
| 336 | |
| 337 | if (psf->norm_double == SF_TRUE) |
| 338 | normfact = 1.0 / 0x8000 ; |
| 339 | else |
| 340 | normfact = 1.0 / 0x10 ; |
| 341 | |
| 342 | bufferlen = sizeof (psf->u.cbuf) / 3 ; |
| 343 | bufferlen -= (bufferlen & 1) ; |
| 344 | while (len > 0) |
| 345 | { readcount = (len >= bufferlen) ? bufferlen : len ; |
| 346 | count = psf_fread (psf->u.cbuf, 3, readcount, psf) ; |
| 347 | |
| 348 | ucptr = psf->u.ucbuf ; |
| 349 | for (k = 0 ; k < readcount ; k += 2) |
| 350 | { sample = (ucptr [0] << 8) | (ucptr [1] & 0xF0) ; |
| 351 | ptr [total + k] = normfact * sample ; |
| 352 | sample = (ucptr [2] << 8) | ((ucptr [1] & 0xF) << 4) ; |
| 353 | ptr [total + k + 1] = normfact * sample ; |
| 354 | ucptr += 3 ; |
| 355 | } ; |
| 356 | |
| 357 | total += count ; |
| 358 | len -= readcount ; |
| 359 | } ; |
| 360 | |
| 361 | return total ; |
| 362 | } /* txw_read_d */ |
| 363 | |
| 364 | static sf_count_t |
| 365 | txw_seek (SF_PRIVATE *psf, int mode, sf_count_t offset) |
| 366 | { if (psf && mode) |
| 367 | return offset ; |
| 368 | |
| 369 | return 0 ; |
| 370 | } /* txw_seek */ |
| 371 | |
| 372 | #endif |