| 1 | /* |
| 2 | * This file is part of DisOrder |
| 3 | * Copyright (C) 2007-2009 Richard Kettlewell |
| 4 | * |
| 5 | * This program is free software: you can redistribute it and/or modify |
| 6 | * it under the terms of the GNU General Public License as published by |
| 7 | * the Free Software Foundation, either version 3 of the License, or |
| 8 | * (at your option) any later version. |
| 9 | * |
| 10 | * This program is distributed in the hope that it will be useful, |
| 11 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 12 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 13 | * GNU General Public License for more details. |
| 14 | * |
| 15 | * You should have received a copy of the GNU General Public License |
| 16 | * along with this program. If not, see <http://www.gnu.org/licenses/>. |
| 17 | */ |
| 18 | /** @file server/decode.c |
| 19 | * @brief General-purpose decoder for use by speaker process |
| 20 | */ |
| 21 | |
| 22 | #include "disorder-server.h" |
| 23 | #include "hreader.h" |
| 24 | |
| 25 | #include <mad.h> |
| 26 | #include <vorbis/vorbisfile.h> |
| 27 | |
| 28 | #include <FLAC/stream_decoder.h> |
| 29 | |
| 30 | #include "wav.h" |
| 31 | #include "speaker-protocol.h" |
| 32 | |
| 33 | |
| 34 | /** @brief Encoding lookup table type */ |
| 35 | struct decoder { |
| 36 | /** @brief Glob pattern matching file */ |
| 37 | const char *pattern; |
| 38 | /** @brief Decoder function */ |
| 39 | void (*decode)(void); |
| 40 | }; |
| 41 | |
| 42 | static struct hreader input[1]; |
| 43 | |
| 44 | /** @brief Output file */ |
| 45 | static FILE *outputfp; |
| 46 | |
| 47 | /** @brief Filename */ |
| 48 | static const char *path; |
| 49 | |
| 50 | /** @brief Input buffer */ |
| 51 | static char input_buffer[1048576]; |
| 52 | |
| 53 | /** @brief Number of bytes read into buffer */ |
| 54 | static int input_count; |
| 55 | |
| 56 | /** @brief Write an 8-bit word */ |
| 57 | static inline void output_8(int n) { |
| 58 | if(putc(n, outputfp) < 0) |
| 59 | disorder_fatal(errno, "decoding %s: output error", path); |
| 60 | } |
| 61 | |
| 62 | /** @brief Write a 16-bit word in bigendian format */ |
| 63 | static inline void output_16(uint16_t n) { |
| 64 | if(putc(n >> 8, outputfp) < 0 |
| 65 | || putc(n, outputfp) < 0) |
| 66 | disorder_fatal(errno, "decoding %s: output error", path); |
| 67 | } |
| 68 | |
| 69 | /** @brief Write a 24-bit word in bigendian format */ |
| 70 | static inline void output_24(uint32_t n) { |
| 71 | if(putc(n >> 16, outputfp) < 0 |
| 72 | || putc(n >> 8, outputfp) < 0 |
| 73 | || putc(n, outputfp) < 0) |
| 74 | disorder_fatal(errno, "decoding %s: output error", path); |
| 75 | } |
| 76 | |
| 77 | /** @brief Write a 32-bit word in bigendian format */ |
| 78 | static inline void output_32(uint32_t n) { |
| 79 | if(putc(n >> 24, outputfp) < 0 |
| 80 | || putc(n >> 16, outputfp) < 0 |
| 81 | || putc(n >> 8, outputfp) < 0 |
| 82 | || putc(n, outputfp) < 0) |
| 83 | disorder_fatal(errno, "decoding %s: output error", path); |
| 84 | } |
| 85 | |
| 86 | /** @brief Write a block header |
| 87 | * @param rate Sample rate in Hz |
| 88 | * @param channels Channel count (currently only 1 or 2 supported) |
| 89 | * @param bits Bits per sample (must be a multiple of 8, no more than 64) |
| 90 | * @param nbytes Total number of data bytes |
| 91 | * @param endian @ref ENDIAN_BIG or @ref ENDIAN_LITTLE |
| 92 | * |
| 93 | * Checks that the sample format is a supported one (so other calls do not have |
| 94 | * to) and calls disorder_fatal() on error. |
| 95 | */ |
| 96 | static void output_header(int rate, |
| 97 | int channels, |
| 98 | int bits, |
| 99 | int nbytes, |
| 100 | int endian) { |
| 101 | struct stream_header header; |
| 102 | |
| 103 | if(bits <= 0 || bits % 8 || bits > 64) |
| 104 | disorder_fatal(0, "decoding %s: unsupported sample size %d bits", |
| 105 | path, bits); |
| 106 | if(channels <= 0 || channels > 2) |
| 107 | disorder_fatal(0, "decoding %s: unsupported channel count %d", |
| 108 | path, channels); |
| 109 | if(rate <= 0) |
| 110 | disorder_fatal(0, "decoding %s: nonsensical sample rate %dHz", path, rate); |
| 111 | header.rate = rate; |
| 112 | header.bits = bits; |
| 113 | header.channels = channels; |
| 114 | header.endian = endian; |
| 115 | header.nbytes = nbytes; |
| 116 | if(fwrite(&header, sizeof header, 1, outputfp) < 1) |
| 117 | disorder_fatal(errno, "decoding %s: writing format header", path); |
| 118 | } |
| 119 | |
| 120 | /** @brief Dithering state |
| 121 | * Filched from mpg321, which credits it to Robert Leslie */ |
| 122 | struct audio_dither { |
| 123 | mad_fixed_t error[3]; |
| 124 | mad_fixed_t random; |
| 125 | }; |
| 126 | |
| 127 | /** @brief 32-bit PRNG |
| 128 | * Filched from mpg321, which credits it to Robert Leslie */ |
| 129 | static inline unsigned long prng(unsigned long state) |
| 130 | { |
| 131 | return (state * 0x0019660dL + 0x3c6ef35fL) & 0xffffffffL; |
| 132 | } |
| 133 | |
| 134 | /** @brief Generic linear sample quantize and dither routine |
| 135 | * Filched from mpg321, which credits it to Robert Leslie */ |
| 136 | static long audio_linear_dither(mad_fixed_t sample, |
| 137 | struct audio_dither *dither) { |
| 138 | unsigned int scalebits; |
| 139 | mad_fixed_t output, mask, rnd; |
| 140 | const int bits = 16; |
| 141 | |
| 142 | enum { |
| 143 | MIN = -MAD_F_ONE, |
| 144 | MAX = MAD_F_ONE - 1 |
| 145 | }; |
| 146 | |
| 147 | /* noise shape */ |
| 148 | sample += dither->error[0] - dither->error[1] + dither->error[2]; |
| 149 | |
| 150 | dither->error[2] = dither->error[1]; |
| 151 | dither->error[1] = dither->error[0] / 2; |
| 152 | |
| 153 | /* bias */ |
| 154 | output = sample + (1L << (MAD_F_FRACBITS + 1 - bits - 1)); |
| 155 | |
| 156 | scalebits = MAD_F_FRACBITS + 1 - bits; |
| 157 | mask = (1L << scalebits) - 1; |
| 158 | |
| 159 | /* dither */ |
| 160 | rnd = prng(dither->random); |
| 161 | output += (rnd & mask) - (dither->random & mask); |
| 162 | |
| 163 | dither->random = rnd; |
| 164 | |
| 165 | /* clip */ |
| 166 | if (output > MAX) { |
| 167 | output = MAX; |
| 168 | |
| 169 | if (sample > MAX) |
| 170 | sample = MAX; |
| 171 | } |
| 172 | else if (output < MIN) { |
| 173 | output = MIN; |
| 174 | |
| 175 | if (sample < MIN) |
| 176 | sample = MIN; |
| 177 | } |
| 178 | |
| 179 | /* quantize */ |
| 180 | output &= ~mask; |
| 181 | |
| 182 | /* error feedback */ |
| 183 | dither->error[0] = sample - output; |
| 184 | |
| 185 | /* scale */ |
| 186 | return output >> scalebits; |
| 187 | } |
| 188 | |
| 189 | /** @brief MP3 output callback */ |
| 190 | static enum mad_flow mp3_output(void attribute((unused)) *data, |
| 191 | struct mad_header const *header, |
| 192 | struct mad_pcm *pcm) { |
| 193 | size_t n = pcm->length; |
| 194 | const mad_fixed_t *l = pcm->samples[0], *r = pcm->samples[1]; |
| 195 | static struct audio_dither ld[1], rd[1]; |
| 196 | |
| 197 | output_header(header->samplerate, |
| 198 | pcm->channels, |
| 199 | 16, |
| 200 | 2 * pcm->channels * pcm->length, |
| 201 | ENDIAN_BIG); |
| 202 | switch(pcm->channels) { |
| 203 | case 1: |
| 204 | while(n--) |
| 205 | output_16(audio_linear_dither(*l++, ld)); |
| 206 | break; |
| 207 | case 2: |
| 208 | while(n--) { |
| 209 | output_16(audio_linear_dither(*l++, ld)); |
| 210 | output_16(audio_linear_dither(*r++, rd)); |
| 211 | } |
| 212 | break; |
| 213 | } |
| 214 | return MAD_FLOW_CONTINUE; |
| 215 | } |
| 216 | |
| 217 | /** @brief MP3 input callback */ |
| 218 | static enum mad_flow mp3_input(void attribute((unused)) *data, |
| 219 | struct mad_stream *stream) { |
| 220 | int used, remain, n; |
| 221 | |
| 222 | /* libmad requires its caller to do ALL the buffering work, including coping |
| 223 | * with partial frames. Given that it appears to be completely undocumented |
| 224 | * you could perhaps be forgiven for not discovering this... */ |
| 225 | if(input_count) { |
| 226 | /* Compute total number of bytes consumed */ |
| 227 | used = (char *)stream->next_frame - input_buffer; |
| 228 | /* Compute number of bytes left to consume */ |
| 229 | remain = input_count - used; |
| 230 | memmove(input_buffer, input_buffer + used, remain); |
| 231 | } else { |
| 232 | remain = 0; |
| 233 | } |
| 234 | /* Read new data */ |
| 235 | n = hreader_read(input, |
| 236 | input_buffer + remain, |
| 237 | (sizeof input_buffer) - remain); |
| 238 | if(n < 0) |
| 239 | disorder_fatal(errno, "reading from %s", path); |
| 240 | /* Compute total number of bytes available */ |
| 241 | input_count = remain + n; |
| 242 | if(input_count) |
| 243 | mad_stream_buffer(stream, (unsigned char *)input_buffer, input_count); |
| 244 | if(n) |
| 245 | return MAD_FLOW_CONTINUE; |
| 246 | else |
| 247 | return MAD_FLOW_STOP; |
| 248 | } |
| 249 | |
| 250 | /** @brief MP3 error callback */ |
| 251 | static enum mad_flow mp3_error(void attribute((unused)) *data, |
| 252 | struct mad_stream *stream, |
| 253 | struct mad_frame attribute((unused)) *frame) { |
| 254 | if(0) |
| 255 | /* Just generates pointless verbosity l-( */ |
| 256 | disorder_error(0, "decoding %s: %s (%#04x)", |
| 257 | path, mad_stream_errorstr(stream), stream->error); |
| 258 | return MAD_FLOW_CONTINUE; |
| 259 | } |
| 260 | |
| 261 | /** @brief MP3 decoder */ |
| 262 | static void decode_mp3(void) { |
| 263 | struct mad_decoder mad[1]; |
| 264 | |
| 265 | if(hreader_init(path, input)) |
| 266 | disorder_fatal(errno, "opening %s", path); |
| 267 | mad_decoder_init(mad, 0/*data*/, mp3_input, 0/*header*/, 0/*filter*/, |
| 268 | mp3_output, mp3_error, 0/*message*/); |
| 269 | if(mad_decoder_run(mad, MAD_DECODER_MODE_SYNC)) |
| 270 | exit(1); |
| 271 | mad_decoder_finish(mad); |
| 272 | } |
| 273 | |
| 274 | static size_t ogg_read_func(void *ptr, size_t size, size_t nmemb, void *datasource) { |
| 275 | struct hreader *h = datasource; |
| 276 | |
| 277 | int n = hreader_read(h, ptr, size * nmemb); |
| 278 | if(n < 0) n = 0; |
| 279 | return n / size; |
| 280 | } |
| 281 | |
| 282 | static int ogg_seek_func(void *datasource, ogg_int64_t offset, int whence) { |
| 283 | struct hreader *h = datasource; |
| 284 | |
| 285 | return hreader_seek(h, offset, whence) < 0 ? -1 : 0; |
| 286 | } |
| 287 | |
| 288 | static int ogg_close_func(void attribute((unused)) *datasource) { |
| 289 | return 0; |
| 290 | } |
| 291 | |
| 292 | static long ogg_tell_func(void *datasource) { |
| 293 | struct hreader *h = datasource; |
| 294 | |
| 295 | return hreader_seek(h, 0, SEEK_CUR); |
| 296 | } |
| 297 | |
| 298 | static const ov_callbacks ogg_callbacks = { |
| 299 | ogg_read_func, |
| 300 | ogg_seek_func, |
| 301 | ogg_close_func, |
| 302 | ogg_tell_func, |
| 303 | }; |
| 304 | |
| 305 | /** @brief OGG decoder */ |
| 306 | static void decode_ogg(void) { |
| 307 | struct hreader ogginput[1]; |
| 308 | OggVorbis_File vf[1]; |
| 309 | int err; |
| 310 | long n; |
| 311 | int bitstream; |
| 312 | vorbis_info *vi; |
| 313 | |
| 314 | hreader_init(path, ogginput); |
| 315 | /* There doesn't seem to be any standard function for mapping the error codes |
| 316 | * to strings l-( */ |
| 317 | if((err = ov_open_callbacks(ogginput, vf, 0/*initial*/, 0/*ibytes*/, |
| 318 | ogg_callbacks))) |
| 319 | disorder_fatal(0, "ov_open_callbacks %s: %d", path, err); |
| 320 | if(!(vi = ov_info(vf, 0/*link*/))) |
| 321 | disorder_fatal(0, "ov_info %s: failed", path); |
| 322 | while((n = ov_read(vf, input_buffer, sizeof input_buffer, 1/*bigendianp*/, |
| 323 | 2/*bytes/word*/, 1/*signed*/, &bitstream))) { |
| 324 | if(n < 0) |
| 325 | disorder_fatal(0, "ov_read %s: %ld", path, n); |
| 326 | if(bitstream > 0) |
| 327 | disorder_fatal(0, "only single-bitstream ogg files are supported"); |
| 328 | output_header(vi->rate, vi->channels, 16/*bits*/, n, ENDIAN_BIG); |
| 329 | if(fwrite(input_buffer, 1, n, outputfp) < (size_t)n) |
| 330 | disorder_fatal(errno, "decoding %s: writing sample data", path); |
| 331 | } |
| 332 | } |
| 333 | |
| 334 | /** @brief Sample data callback used by decode_wav() */ |
| 335 | static int wav_write(struct wavfile attribute((unused)) *f, |
| 336 | const char *data, |
| 337 | size_t nbytes, |
| 338 | void attribute((unused)) *u) { |
| 339 | if(fwrite(data, 1, nbytes, outputfp) < nbytes) |
| 340 | disorder_fatal(errno, "decoding %s: writing sample data", path); |
| 341 | return 0; |
| 342 | } |
| 343 | |
| 344 | /** @brief WAV file decoder */ |
| 345 | static void decode_wav(void) { |
| 346 | struct wavfile f[1]; |
| 347 | int err; |
| 348 | |
| 349 | if((err = wav_init(f, path))) |
| 350 | disorder_fatal(err, "opening %s", path); |
| 351 | output_header(f->rate, f->channels, f->bits, f->datasize, ENDIAN_LITTLE); |
| 352 | if((err = wav_data(f, wav_write, 0))) |
| 353 | disorder_fatal(err, "error decoding %s", path); |
| 354 | } |
| 355 | |
| 356 | /** @brief Metadata callback for FLAC decoder |
| 357 | * |
| 358 | * This is a no-op here. |
| 359 | */ |
| 360 | static void flac_metadata(const FLAC__StreamDecoder attribute((unused)) *decoder, |
| 361 | const FLAC__StreamMetadata attribute((unused)) *metadata, |
| 362 | void attribute((unused)) *client_data) { |
| 363 | } |
| 364 | |
| 365 | /** @brief Error callback for FLAC decoder */ |
| 366 | static void flac_error(const FLAC__StreamDecoder attribute((unused)) *decoder, |
| 367 | FLAC__StreamDecoderErrorStatus status, |
| 368 | void attribute((unused)) *client_data) { |
| 369 | disorder_fatal(0, "error decoding %s: %s", path, |
| 370 | FLAC__StreamDecoderErrorStatusString[status]); |
| 371 | } |
| 372 | |
| 373 | /** @brief Write callback for FLAC decoder */ |
| 374 | static FLAC__StreamDecoderWriteStatus flac_write |
| 375 | (const FLAC__StreamDecoder attribute((unused)) *decoder, |
| 376 | const FLAC__Frame *frame, |
| 377 | const FLAC__int32 *const buffer[], |
| 378 | void attribute((unused)) *client_data) { |
| 379 | size_t n, c; |
| 380 | |
| 381 | output_header(frame->header.sample_rate, |
| 382 | frame->header.channels, |
| 383 | frame->header.bits_per_sample, |
| 384 | (frame->header.channels * frame->header.blocksize |
| 385 | * frame->header.bits_per_sample) / 8, |
| 386 | ENDIAN_BIG); |
| 387 | for(n = 0; n < frame->header.blocksize; ++n) { |
| 388 | for(c = 0; c < frame->header.channels; ++c) { |
| 389 | switch(frame->header.bits_per_sample) { |
| 390 | case 8: output_8(buffer[c][n]); break; |
| 391 | case 16: output_16(buffer[c][n]); break; |
| 392 | case 24: output_24(buffer[c][n]); break; |
| 393 | case 32: output_32(buffer[c][n]); break; |
| 394 | } |
| 395 | } |
| 396 | } |
| 397 | return FLAC__STREAM_DECODER_WRITE_STATUS_CONTINUE; |
| 398 | } |
| 399 | |
| 400 | static FLAC__StreamDecoderReadStatus flac_read(const FLAC__StreamDecoder attribute((unused)) *decoder, |
| 401 | FLAC__byte buffer[], |
| 402 | size_t *bytes, |
| 403 | void *client_data) { |
| 404 | struct hreader *flacinput = client_data; |
| 405 | int n = hreader_read(flacinput, buffer, *bytes); |
| 406 | if(n == 0) { |
| 407 | *bytes = 0; |
| 408 | return FLAC__STREAM_DECODER_READ_STATUS_END_OF_STREAM; |
| 409 | } |
| 410 | if(n < 0) { |
| 411 | *bytes = 0; |
| 412 | return FLAC__STREAM_DECODER_READ_STATUS_ABORT; |
| 413 | } |
| 414 | *bytes = n; |
| 415 | return FLAC__STREAM_DECODER_READ_STATUS_CONTINUE; |
| 416 | } |
| 417 | |
| 418 | static FLAC__StreamDecoderSeekStatus flac_seek(const FLAC__StreamDecoder attribute((unused)) *decoder, |
| 419 | FLAC__uint64 absolute_byte_offset, |
| 420 | void *client_data) { |
| 421 | struct hreader *flacinput = client_data; |
| 422 | if(hreader_seek(flacinput, absolute_byte_offset, SEEK_SET) < 0) |
| 423 | return FLAC__STREAM_DECODER_SEEK_STATUS_ERROR; |
| 424 | else |
| 425 | return FLAC__STREAM_DECODER_SEEK_STATUS_OK; |
| 426 | } |
| 427 | |
| 428 | static FLAC__StreamDecoderTellStatus flac_tell(const FLAC__StreamDecoder attribute((unused)) *decoder, |
| 429 | FLAC__uint64 *absolute_byte_offset, |
| 430 | void *client_data) { |
| 431 | struct hreader *flacinput = client_data; |
| 432 | off_t offset = hreader_seek(flacinput, 0, SEEK_CUR); |
| 433 | if(offset < 0) |
| 434 | return FLAC__STREAM_DECODER_TELL_STATUS_ERROR; |
| 435 | *absolute_byte_offset = offset; |
| 436 | return FLAC__STREAM_DECODER_TELL_STATUS_OK; |
| 437 | } |
| 438 | |
| 439 | static FLAC__StreamDecoderLengthStatus flac_length(const FLAC__StreamDecoder attribute((unused)) *decoder, |
| 440 | FLAC__uint64 *stream_length, |
| 441 | void *client_data) { |
| 442 | struct hreader *flacinput = client_data; |
| 443 | *stream_length = hreader_size(flacinput); |
| 444 | return FLAC__STREAM_DECODER_LENGTH_STATUS_OK; |
| 445 | } |
| 446 | |
| 447 | static FLAC__bool flac_eof(const FLAC__StreamDecoder attribute((unused)) *decoder, |
| 448 | void *client_data) { |
| 449 | struct hreader *flacinput = client_data; |
| 450 | return hreader_eof(flacinput); |
| 451 | } |
| 452 | |
| 453 | /** @brief FLAC file decoder */ |
| 454 | static void decode_flac(void) { |
| 455 | FLAC__StreamDecoder *sd = FLAC__stream_decoder_new(); |
| 456 | FLAC__StreamDecoderInitStatus is; |
| 457 | struct hreader flacinput[1]; |
| 458 | |
| 459 | if (!sd) |
| 460 | disorder_fatal(0, "FLAC__stream_decoder_new failed"); |
| 461 | if(hreader_init(path, flacinput)) |
| 462 | disorder_fatal(errno, "error opening %s", path); |
| 463 | |
| 464 | if((is = FLAC__stream_decoder_init_stream(sd, |
| 465 | flac_read, |
| 466 | flac_seek, |
| 467 | flac_tell, |
| 468 | flac_length, |
| 469 | flac_eof, |
| 470 | flac_write, flac_metadata, |
| 471 | flac_error, |
| 472 | flacinput))) |
| 473 | disorder_fatal(0, "FLAC__stream_decoder_init_stream %s: %s", |
| 474 | path, FLAC__StreamDecoderInitStatusString[is]); |
| 475 | |
| 476 | FLAC__stream_decoder_process_until_end_of_stream(sd); |
| 477 | FLAC__stream_decoder_finish(sd); |
| 478 | FLAC__stream_decoder_delete(sd); |
| 479 | } |
| 480 | |
| 481 | /** @brief Lookup table of decoders */ |
| 482 | static const struct decoder decoders[] = { |
| 483 | { "*.mp3", decode_mp3 }, |
| 484 | { "*.MP3", decode_mp3 }, |
| 485 | { "*.ogg", decode_ogg }, |
| 486 | { "*.OGG", decode_ogg }, |
| 487 | { "*.flac", decode_flac }, |
| 488 | { "*.FLAC", decode_flac }, |
| 489 | { "*.wav", decode_wav }, |
| 490 | { "*.WAV", decode_wav }, |
| 491 | { 0, 0 } |
| 492 | }; |
| 493 | |
| 494 | static const struct option options[] = { |
| 495 | { "help", no_argument, 0, 'h' }, |
| 496 | { "version", no_argument, 0, 'V' }, |
| 497 | { 0, 0, 0, 0 } |
| 498 | }; |
| 499 | |
| 500 | /* Display usage message and terminate. */ |
| 501 | static void help(void) { |
| 502 | xprintf("Usage:\n" |
| 503 | " disorder-decode [OPTIONS] PATH\n" |
| 504 | "Options:\n" |
| 505 | " --help, -h Display usage message\n" |
| 506 | " --version, -V Display version number\n" |
| 507 | "\n" |
| 508 | "Audio decoder for DisOrder. Only intended to be used by speaker\n" |
| 509 | "process, not for normal users.\n"); |
| 510 | xfclose(stdout); |
| 511 | exit(0); |
| 512 | } |
| 513 | |
| 514 | int main(int argc, char **argv) { |
| 515 | int n; |
| 516 | const char *e; |
| 517 | |
| 518 | set_progname(argv); |
| 519 | if(!setlocale(LC_CTYPE, "")) disorder_fatal(errno, "calling setlocale"); |
| 520 | while((n = getopt_long(argc, argv, "hV", options, 0)) >= 0) { |
| 521 | switch(n) { |
| 522 | case 'h': help(); |
| 523 | case 'V': version("disorder-decode"); |
| 524 | default: disorder_fatal(0, "invalid option"); |
| 525 | } |
| 526 | } |
| 527 | if(optind >= argc) |
| 528 | disorder_fatal(0, "missing filename"); |
| 529 | if(optind + 1 < argc) |
| 530 | disorder_fatal(0, "excess arguments"); |
| 531 | if((e = getenv("DISORDER_RAW_FD"))) { |
| 532 | if(!(outputfp = fdopen(atoi(e), "wb"))) |
| 533 | disorder_fatal(errno, "fdopen"); |
| 534 | } else |
| 535 | outputfp = stdout; |
| 536 | path = argv[optind]; |
| 537 | for(n = 0; |
| 538 | decoders[n].pattern |
| 539 | && fnmatch(decoders[n].pattern, path, 0) != 0; |
| 540 | ++n) |
| 541 | ; |
| 542 | if(!decoders[n].pattern) |
| 543 | disorder_fatal(0, "cannot determine file type for %s", path); |
| 544 | decoders[n].decode(); |
| 545 | xfclose(outputfp); |
| 546 | return 0; |
| 547 | } |
| 548 | |
| 549 | /* |
| 550 | Local Variables: |
| 551 | c-basic-offset:2 |
| 552 | comment-column:40 |
| 553 | fill-column:79 |
| 554 | indent-tabs-mode:nil |
| 555 | End: |
| 556 | */ |