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00026 #include "libavutil/avassert.h"
00027 #include "libavutil/dict.h"
00028 #include "libavutil/log.h"
00029 #include "libavutil/mathematics.h"
00030 #include "libavutil/opt.h"
00031 #include "avformat.h"
00032 #include "internal.h"
00033 #include "avio_internal.h"
00034 #include "pcm.h"
00035 #include "riff.h"
00036 #include "avio.h"
00037 #include "metadata.h"
00038
00039 typedef struct {
00040 const AVClass *class;
00041 int64_t data;
00042 int64_t data_end;
00043 int64_t minpts;
00044 int64_t maxpts;
00045 int last_duration;
00046 int w64;
00047 int write_bext;
00048 int64_t smv_data_ofs;
00049 int smv_block_size;
00050 int smv_frames_per_jpeg;
00051 int smv_block;
00052 int smv_last_stream;
00053 int smv_eof;
00054 int audio_eof;
00055 int ignore_length;
00056 } WAVContext;
00057
00058 #if CONFIG_WAV_MUXER
00059 static inline void bwf_write_bext_string(AVFormatContext *s, const char *key, int maxlen)
00060 {
00061 AVDictionaryEntry *tag;
00062 int len = 0;
00063
00064 if (tag = av_dict_get(s->metadata, key, NULL, 0)) {
00065 len = strlen(tag->value);
00066 len = FFMIN(len, maxlen);
00067 avio_write(s->pb, tag->value, len);
00068 }
00069
00070 ffio_fill(s->pb, 0, maxlen - len);
00071 }
00072
00073 static void bwf_write_bext_chunk(AVFormatContext *s)
00074 {
00075 AVDictionaryEntry *tmp_tag;
00076 uint64_t time_reference = 0;
00077 int64_t bext = ff_start_tag(s->pb, "bext");
00078
00079 bwf_write_bext_string(s, "description", 256);
00080 bwf_write_bext_string(s, "originator", 32);
00081 bwf_write_bext_string(s, "originator_reference", 32);
00082 bwf_write_bext_string(s, "origination_date", 10);
00083 bwf_write_bext_string(s, "origination_time", 8);
00084
00085 if (tmp_tag = av_dict_get(s->metadata, "time_reference", NULL, 0))
00086 time_reference = strtoll(tmp_tag->value, NULL, 10);
00087 avio_wl64(s->pb, time_reference);
00088 avio_wl16(s->pb, 1);
00089
00090 if (tmp_tag = av_dict_get(s->metadata, "umid", NULL, 0)) {
00091 unsigned char umidpart_str[17] = {0};
00092 int i;
00093 uint64_t umidpart;
00094 int len = strlen(tmp_tag->value+2);
00095
00096 for (i = 0; i < len/16; i++) {
00097 memcpy(umidpart_str, tmp_tag->value + 2 + (i*16), 16);
00098 umidpart = strtoll(umidpart_str, NULL, 16);
00099 avio_wb64(s->pb, umidpart);
00100 }
00101 ffio_fill(s->pb, 0, 64 - i*8);
00102 } else
00103 ffio_fill(s->pb, 0, 64);
00104
00105 ffio_fill(s->pb, 0, 190);
00106
00107 if (tmp_tag = av_dict_get(s->metadata, "coding_history", NULL, 0))
00108 avio_put_str(s->pb, tmp_tag->value);
00109
00110 ff_end_tag(s->pb, bext);
00111 }
00112
00113 static int wav_write_header(AVFormatContext *s)
00114 {
00115 WAVContext *wav = s->priv_data;
00116 AVIOContext *pb = s->pb;
00117 int64_t fmt, fact;
00118
00119 ffio_wfourcc(pb, "RIFF");
00120 avio_wl32(pb, 0);
00121 ffio_wfourcc(pb, "WAVE");
00122
00123
00124 fmt = ff_start_tag(pb, "fmt ");
00125 if (ff_put_wav_header(pb, s->streams[0]->codec) < 0) {
00126 av_log(s, AV_LOG_ERROR, "%s codec not supported in WAVE format\n",
00127 s->streams[0]->codec->codec ? s->streams[0]->codec->codec->name : "NONE");
00128 return -1;
00129 }
00130 ff_end_tag(pb, fmt);
00131
00132 if (s->streams[0]->codec->codec_tag != 0x01
00133 && s->pb->seekable) {
00134 fact = ff_start_tag(pb, "fact");
00135 avio_wl32(pb, 0);
00136 ff_end_tag(pb, fact);
00137 }
00138
00139 if (wav->write_bext)
00140 bwf_write_bext_chunk(s);
00141
00142 avpriv_set_pts_info(s->streams[0], 64, 1, s->streams[0]->codec->sample_rate);
00143 wav->maxpts = wav->last_duration = 0;
00144 wav->minpts = INT64_MAX;
00145
00146
00147 wav->data = ff_start_tag(pb, "data");
00148
00149 avio_flush(pb);
00150
00151 return 0;
00152 }
00153
00154 static int wav_write_packet(AVFormatContext *s, AVPacket *pkt)
00155 {
00156 AVIOContext *pb = s->pb;
00157 WAVContext *wav = s->priv_data;
00158 avio_write(pb, pkt->data, pkt->size);
00159 if(pkt->pts != AV_NOPTS_VALUE) {
00160 wav->minpts = FFMIN(wav->minpts, pkt->pts);
00161 wav->maxpts = FFMAX(wav->maxpts, pkt->pts);
00162 wav->last_duration = pkt->duration;
00163 } else
00164 av_log(s, AV_LOG_ERROR, "wav_write_packet: NOPTS\n");
00165 return 0;
00166 }
00167
00168 static int wav_write_trailer(AVFormatContext *s)
00169 {
00170 AVIOContext *pb = s->pb;
00171 WAVContext *wav = s->priv_data;
00172 int64_t file_size;
00173
00174 avio_flush(pb);
00175
00176 if (s->pb->seekable) {
00177 ff_end_tag(pb, wav->data);
00178
00179
00180 file_size = avio_tell(pb);
00181 avio_seek(pb, 4, SEEK_SET);
00182 avio_wl32(pb, (uint32_t)(file_size - 8));
00183 avio_seek(pb, file_size, SEEK_SET);
00184
00185 avio_flush(pb);
00186
00187 if(s->streams[0]->codec->codec_tag != 0x01) {
00188
00189 int number_of_samples;
00190 number_of_samples = av_rescale(wav->maxpts - wav->minpts + wav->last_duration,
00191 s->streams[0]->codec->sample_rate * (int64_t)s->streams[0]->time_base.num,
00192 s->streams[0]->time_base.den);
00193 avio_seek(pb, wav->data-12, SEEK_SET);
00194 avio_wl32(pb, number_of_samples);
00195 avio_seek(pb, file_size, SEEK_SET);
00196 avio_flush(pb);
00197 }
00198 }
00199 return 0;
00200 }
00201
00202 #define OFFSET(x) offsetof(WAVContext, x)
00203 #define ENC AV_OPT_FLAG_ENCODING_PARAM
00204 static const AVOption options[] = {
00205 { "write_bext", "Write BEXT chunk.", OFFSET(write_bext), AV_OPT_TYPE_INT, { 0 }, 0, 1, ENC },
00206 { NULL },
00207 };
00208
00209 static const AVClass wav_muxer_class = {
00210 .class_name = "WAV muxer",
00211 .item_name = av_default_item_name,
00212 .option = options,
00213 .version = LIBAVUTIL_VERSION_INT,
00214 };
00215
00216 AVOutputFormat ff_wav_muxer = {
00217 .name = "wav",
00218 .long_name = NULL_IF_CONFIG_SMALL("WAV format"),
00219 .mime_type = "audio/x-wav",
00220 .extensions = "wav",
00221 .priv_data_size = sizeof(WAVContext),
00222 .audio_codec = CODEC_ID_PCM_S16LE,
00223 .video_codec = CODEC_ID_NONE,
00224 .write_header = wav_write_header,
00225 .write_packet = wav_write_packet,
00226 .write_trailer = wav_write_trailer,
00227 .codec_tag= (const AVCodecTag* const []){ff_codec_wav_tags, 0},
00228 .priv_class = &wav_muxer_class,
00229 };
00230 #endif
00231
00232
00233 #if CONFIG_WAV_DEMUXER
00234
00235 static int64_t next_tag(AVIOContext *pb, uint32_t *tag)
00236 {
00237 *tag = avio_rl32(pb);
00238 return avio_rl32(pb);
00239 }
00240
00241
00242 static int64_t find_tag(AVIOContext *pb, uint32_t tag1)
00243 {
00244 unsigned int tag;
00245 int64_t size;
00246
00247 for (;;) {
00248 if (url_feof(pb))
00249 return -1;
00250 size = next_tag(pb, &tag);
00251 if (tag == tag1)
00252 break;
00253 avio_skip(pb, size);
00254 }
00255 return size;
00256 }
00257
00258 static int wav_probe(AVProbeData *p)
00259 {
00260
00261 if (p->buf_size <= 32)
00262 return 0;
00263 if (!memcmp(p->buf + 8, "WAVE", 4)) {
00264 if (!memcmp(p->buf, "RIFF", 4))
00265
00266
00267
00268
00269
00270 return AVPROBE_SCORE_MAX - 1;
00271 else if (!memcmp(p->buf, "RF64", 4) &&
00272 !memcmp(p->buf + 12, "ds64", 4))
00273 return AVPROBE_SCORE_MAX;
00274 }
00275 return 0;
00276 }
00277
00278 static int wav_parse_fmt_tag(AVFormatContext *s, int64_t size, AVStream **st)
00279 {
00280 AVIOContext *pb = s->pb;
00281 int ret;
00282
00283
00284 *st = avformat_new_stream(s, NULL);
00285 if (!*st)
00286 return AVERROR(ENOMEM);
00287
00288 ret = ff_get_wav_header(pb, (*st)->codec, size);
00289 if (ret < 0)
00290 return ret;
00291 (*st)->need_parsing = AVSTREAM_PARSE_FULL;
00292
00293 avpriv_set_pts_info(*st, 64, 1, (*st)->codec->sample_rate);
00294
00295 return 0;
00296 }
00297
00298 static inline int wav_parse_bext_string(AVFormatContext *s, const char *key,
00299 int length)
00300 {
00301 char temp[257];
00302 int ret;
00303
00304 av_assert0(length <= sizeof(temp));
00305 if ((ret = avio_read(s->pb, temp, length)) < 0)
00306 return ret;
00307
00308 temp[length] = 0;
00309
00310 if (strlen(temp))
00311 return av_dict_set(&s->metadata, key, temp, 0);
00312
00313 return 0;
00314 }
00315
00316 static int wav_parse_bext_tag(AVFormatContext *s, int64_t size)
00317 {
00318 char temp[131], *coding_history;
00319 int ret, x;
00320 uint64_t time_reference;
00321 int64_t umid_parts[8], umid_mask = 0;
00322
00323 if ((ret = wav_parse_bext_string(s, "description", 256)) < 0 ||
00324 (ret = wav_parse_bext_string(s, "originator", 32)) < 0 ||
00325 (ret = wav_parse_bext_string(s, "originator_reference", 32)) < 0 ||
00326 (ret = wav_parse_bext_string(s, "origination_date", 10)) < 0 ||
00327 (ret = wav_parse_bext_string(s, "origination_time", 8)) < 0)
00328 return ret;
00329
00330 time_reference = avio_rl64(s->pb);
00331 snprintf(temp, sizeof(temp), "%"PRIu64, time_reference);
00332 if ((ret = av_dict_set(&s->metadata, "time_reference", temp, 0)) < 0)
00333 return ret;
00334
00335
00336 if (avio_rl16(s->pb) >= 1) {
00337 for (x = 0; x < 8; x++)
00338 umid_mask |= umid_parts[x] = avio_rb64(s->pb);
00339
00340 if (umid_mask) {
00341
00342 if (umid_parts[4] == 0 && umid_parts[5] == 0 && umid_parts[6] == 0 && umid_parts[7] == 0) {
00343
00344 snprintf(temp, sizeof(temp), "0x%016"PRIX64"%016"PRIX64"%016"PRIX64"%016"PRIX64,
00345 umid_parts[0], umid_parts[1], umid_parts[2], umid_parts[3]);
00346 } else {
00347
00348 snprintf(temp, sizeof(temp), "0x%016"PRIX64"%016"PRIX64"%016"PRIX64"%016"PRIX64
00349 "%016"PRIX64"%016"PRIX64"%016"PRIX64"%016"PRIX64,
00350 umid_parts[0], umid_parts[1], umid_parts[2], umid_parts[3],
00351 umid_parts[4], umid_parts[5], umid_parts[6], umid_parts[7]);
00352 }
00353
00354 if ((ret = av_dict_set(&s->metadata, "umid", temp, 0)) < 0)
00355 return ret;
00356 }
00357
00358 avio_skip(s->pb, 190);
00359 } else
00360 avio_skip(s->pb, 254);
00361
00362 if (size > 602) {
00363
00364 size -= 602;
00365
00366 if (!(coding_history = av_malloc(size+1)))
00367 return AVERROR(ENOMEM);
00368
00369 if ((ret = avio_read(s->pb, coding_history, size)) < 0)
00370 return ret;
00371
00372 coding_history[size] = 0;
00373 if ((ret = av_dict_set(&s->metadata, "coding_history", coding_history,
00374 AV_DICT_DONT_STRDUP_VAL)) < 0)
00375 return ret;
00376 }
00377
00378 return 0;
00379 }
00380
00381 static const AVMetadataConv wav_metadata_conv[] = {
00382 {"description", "comment" },
00383 {"originator", "encoded_by" },
00384 {"origination_date", "date" },
00385 {"origination_time", "creation_time"},
00386 {0},
00387 };
00388
00389
00390 static int wav_read_header(AVFormatContext *s,
00391 AVFormatParameters *ap)
00392 {
00393 int64_t size, av_uninit(data_size);
00394 int64_t sample_count=0;
00395 int rf64;
00396 uint32_t tag, list_type;
00397 AVIOContext *pb = s->pb;
00398 AVStream *st = NULL;
00399 WAVContext *wav = s->priv_data;
00400 int ret, got_fmt = 0;
00401 int64_t next_tag_ofs, data_ofs = -1;
00402
00403 wav->smv_data_ofs = -1;
00404
00405
00406 tag = avio_rl32(pb);
00407
00408 rf64 = tag == MKTAG('R', 'F', '6', '4');
00409 if (!rf64 && tag != MKTAG('R', 'I', 'F', 'F'))
00410 return -1;
00411 avio_rl32(pb);
00412 tag = avio_rl32(pb);
00413 if (tag != MKTAG('W', 'A', 'V', 'E'))
00414 return -1;
00415
00416 if (rf64) {
00417 if (avio_rl32(pb) != MKTAG('d', 's', '6', '4'))
00418 return -1;
00419 size = avio_rl32(pb);
00420 if (size < 24)
00421 return -1;
00422 avio_rl64(pb);
00423 data_size = avio_rl64(pb);
00424 sample_count = avio_rl64(pb);
00425 if (data_size < 0 || sample_count < 0) {
00426 av_log(s, AV_LOG_ERROR, "negative data_size and/or sample_count in "
00427 "ds64: data_size = %"PRId64", sample_count = %"PRId64"\n",
00428 data_size, sample_count);
00429 return AVERROR_INVALIDDATA;
00430 }
00431 avio_skip(pb, size - 24);
00432
00433 }
00434
00435 for (;;) {
00436 AVStream *vst;
00437 size = next_tag(pb, &tag);
00438 next_tag_ofs = avio_tell(pb) + size;
00439
00440 if (url_feof(pb))
00441 break;
00442
00443 switch (tag) {
00444 case MKTAG('f', 'm', 't', ' '):
00445
00446 if (!got_fmt && (ret = wav_parse_fmt_tag(s, size, &st)) < 0) {
00447 return ret;
00448 } else if (got_fmt)
00449 av_log(s, AV_LOG_WARNING, "found more than one 'fmt ' tag\n");
00450
00451 got_fmt = 1;
00452 break;
00453 case MKTAG('d', 'a', 't', 'a'):
00454 if (!got_fmt) {
00455 av_log(s, AV_LOG_ERROR, "found no 'fmt ' tag before the 'data' tag\n");
00456 return AVERROR_INVALIDDATA;
00457 }
00458
00459 if (rf64) {
00460 next_tag_ofs = wav->data_end = avio_tell(pb) + data_size;
00461 } else {
00462 data_size = size;
00463 next_tag_ofs = wav->data_end = size ? next_tag_ofs : INT64_MAX;
00464 }
00465
00466 data_ofs = avio_tell(pb);
00467
00468
00469
00470
00471 if (!pb->seekable || (!rf64 && !size))
00472 goto break_loop;
00473 break;
00474 case MKTAG('f','a','c','t'):
00475 if (!sample_count)
00476 sample_count = avio_rl32(pb);
00477 break;
00478 case MKTAG('b','e','x','t'):
00479 if ((ret = wav_parse_bext_tag(s, size)) < 0)
00480 return ret;
00481 break;
00482 case MKTAG('S','M','V','0'):
00483
00484 if (size != MKTAG('0','2','0','0')) {
00485 av_log(s, AV_LOG_ERROR, "Unknown SMV version found\n");
00486 goto break_loop;
00487 }
00488 av_log(s, AV_LOG_DEBUG, "Found SMV data\n");
00489 vst = avformat_new_stream(s, NULL);
00490 if (!vst)
00491 return AVERROR(ENOMEM);
00492 avio_r8(pb);
00493 vst->id = 1;
00494 vst->codec->codec_type = AVMEDIA_TYPE_VIDEO;
00495 vst->codec->codec_id = CODEC_ID_MJPEG;
00496 vst->codec->width = avio_rl24(pb);
00497 vst->codec->height = avio_rl24(pb);
00498 size = avio_rl24(pb);
00499 wav->smv_data_ofs = avio_tell(pb) + (size - 5) * 3;
00500 avio_rl24(pb);
00501 wav->smv_block_size = avio_rl24(pb);
00502 avpriv_set_pts_info(vst, 32, 1, avio_rl24(pb));
00503 vst->duration = avio_rl24(pb);
00504 avio_rl24(pb);
00505 avio_rl24(pb);
00506 wav->smv_frames_per_jpeg = avio_rl24(pb);
00507 goto break_loop;
00508 case MKTAG('L', 'I', 'S', 'T'):
00509 list_type = avio_rl32(pb);
00510 if (size < 4) {
00511 av_log(s, AV_LOG_ERROR, "too short LIST");
00512 return AVERROR_INVALIDDATA;
00513 }
00514 switch (list_type) {
00515 case MKTAG('I', 'N', 'F', 'O'):
00516 if ((ret = ff_read_riff_info(s, size - 4)) < 0)
00517 return ret;
00518 }
00519 break;
00520 }
00521
00522
00523 if ((avio_size(pb) > 0 && next_tag_ofs >= avio_size(pb)) ||
00524 avio_seek(pb, next_tag_ofs, SEEK_SET) < 0) {
00525 break;
00526 }
00527 }
00528 break_loop:
00529 if (data_ofs < 0) {
00530 av_log(s, AV_LOG_ERROR, "no 'data' tag found\n");
00531 return AVERROR_INVALIDDATA;
00532 }
00533
00534 avio_seek(pb, data_ofs, SEEK_SET);
00535
00536 if (!sample_count && st->codec->channels && av_get_bits_per_sample(st->codec->codec_id))
00537 sample_count = (data_size<<3) / (st->codec->channels * (uint64_t)av_get_bits_per_sample(st->codec->codec_id));
00538 if (sample_count)
00539 st->duration = sample_count;
00540
00541 ff_metadata_conv_ctx(s, NULL, wav_metadata_conv);
00542 ff_metadata_conv_ctx(s, NULL, ff_riff_info_conv);
00543
00544 return 0;
00545 }
00546
00550 static int64_t find_guid(AVIOContext *pb, const uint8_t guid1[16])
00551 {
00552 uint8_t guid[16];
00553 int64_t size;
00554
00555 while (!url_feof(pb)) {
00556 avio_read(pb, guid, 16);
00557 size = avio_rl64(pb);
00558 if (size <= 24)
00559 return -1;
00560 if (!memcmp(guid, guid1, 16))
00561 return size;
00562 avio_skip(pb, FFALIGN(size, INT64_C(8)) - 24);
00563 }
00564 return -1;
00565 }
00566
00567 static const uint8_t guid_data[16] = { 'd', 'a', 't', 'a',
00568 0xF3, 0xAC, 0xD3, 0x11, 0x8C, 0xD1, 0x00, 0xC0, 0x4F, 0x8E, 0xDB, 0x8A };
00569
00570 #define MAX_SIZE 4096
00571
00572 static int wav_read_packet(AVFormatContext *s,
00573 AVPacket *pkt)
00574 {
00575 int ret, size;
00576 int64_t left;
00577 AVStream *st;
00578 WAVContext *wav = s->priv_data;
00579
00580 if (wav->smv_data_ofs > 0) {
00581 int64_t audio_dts, video_dts;
00582 smv_retry:
00583 audio_dts = s->streams[0]->cur_dts;
00584 video_dts = s->streams[1]->cur_dts;
00585 if (audio_dts != AV_NOPTS_VALUE && video_dts != AV_NOPTS_VALUE) {
00586 audio_dts = av_rescale_q(audio_dts, s->streams[0]->time_base, AV_TIME_BASE_Q);
00587 video_dts = av_rescale_q(video_dts, s->streams[1]->time_base, AV_TIME_BASE_Q);
00588 wav->smv_last_stream = video_dts >= audio_dts;
00589 }
00590 wav->smv_last_stream = !wav->smv_last_stream;
00591 wav->smv_last_stream |= wav->audio_eof;
00592 wav->smv_last_stream &= !wav->smv_eof;
00593 if (wav->smv_last_stream) {
00594 uint64_t old_pos = avio_tell(s->pb);
00595 uint64_t new_pos = wav->smv_data_ofs +
00596 wav->smv_block * wav->smv_block_size;
00597 if (avio_seek(s->pb, new_pos, SEEK_SET) < 0) {
00598 ret = AVERROR_EOF;
00599 goto smv_out;
00600 }
00601 size = avio_rl24(s->pb);
00602 ret = av_get_packet(s->pb, pkt, size);
00603 if (ret < 0)
00604 goto smv_out;
00605 pkt->pos -= 3;
00606 pkt->pts = wav->smv_block * wav->smv_frames_per_jpeg;
00607 wav->smv_block++;
00608 pkt->stream_index = 1;
00609 smv_out:
00610 avio_seek(s->pb, old_pos, SEEK_SET);
00611 if (ret == AVERROR_EOF) {
00612 wav->smv_eof = 1;
00613 goto smv_retry;
00614 }
00615 return ret;
00616 }
00617 }
00618
00619 st = s->streams[0];
00620
00621 left = wav->data_end - avio_tell(s->pb);
00622 if (wav->ignore_length)
00623 left= INT_MAX;
00624 if (left <= 0){
00625 if (CONFIG_W64_DEMUXER && wav->w64)
00626 left = find_guid(s->pb, guid_data) - 24;
00627 else
00628 left = find_tag(s->pb, MKTAG('d', 'a', 't', 'a'));
00629 if (left < 0) {
00630 wav->audio_eof = 1;
00631 if (wav->smv_data_ofs > 0 && !wav->smv_eof)
00632 goto smv_retry;
00633 return AVERROR_EOF;
00634 }
00635 wav->data_end= avio_tell(s->pb) + left;
00636 }
00637
00638 size = MAX_SIZE;
00639 if (st->codec->block_align > 1) {
00640 if (size < st->codec->block_align)
00641 size = st->codec->block_align;
00642 size = (size / st->codec->block_align) * st->codec->block_align;
00643 }
00644 size = FFMIN(size, left);
00645 ret = av_get_packet(s->pb, pkt, size);
00646 if (ret < 0)
00647 return ret;
00648 pkt->stream_index = 0;
00649
00650 return ret;
00651 }
00652
00653 static int wav_read_seek(AVFormatContext *s,
00654 int stream_index, int64_t timestamp, int flags)
00655 {
00656 WAVContext *wav = s->priv_data;
00657 AVStream *st;
00658 wav->smv_eof = 0;
00659 wav->audio_eof = 0;
00660 if (wav->smv_data_ofs > 0) {
00661 int64_t smv_timestamp = timestamp;
00662 if (stream_index == 0)
00663 smv_timestamp = av_rescale_q(timestamp, s->streams[0]->time_base, s->streams[1]->time_base);
00664 else
00665 timestamp = av_rescale_q(smv_timestamp, s->streams[1]->time_base, s->streams[0]->time_base);
00666 wav->smv_block = smv_timestamp / wav->smv_frames_per_jpeg;
00667 }
00668
00669 st = s->streams[0];
00670 switch (st->codec->codec_id) {
00671 case CODEC_ID_MP2:
00672 case CODEC_ID_MP3:
00673 case CODEC_ID_AC3:
00674 case CODEC_ID_DTS:
00675
00676 return -1;
00677 default:
00678 break;
00679 }
00680 return pcm_read_seek(s, stream_index, timestamp, flags);
00681 }
00682
00683 #define OFFSET(x) offsetof(WAVContext, x)
00684 #define DEC AV_OPT_FLAG_DECODING_PARAM
00685 static const AVOption demux_options[] = {
00686 { "ignore_length", "Ignore length", OFFSET(ignore_length), AV_OPT_TYPE_INT, { 0 }, 0, 1, DEC },
00687 { NULL },
00688 };
00689
00690 static const AVClass wav_demuxer_class = {
00691 .class_name = "WAV demuxer",
00692 .item_name = av_default_item_name,
00693 .option = demux_options,
00694 .version = LIBAVUTIL_VERSION_INT,
00695 };
00696 AVInputFormat ff_wav_demuxer = {
00697 .name = "wav",
00698 .long_name = NULL_IF_CONFIG_SMALL("WAV format"),
00699 .priv_data_size = sizeof(WAVContext),
00700 .read_probe = wav_probe,
00701 .read_header = wav_read_header,
00702 .read_packet = wav_read_packet,
00703 .read_seek = wav_read_seek,
00704 .flags= AVFMT_GENERIC_INDEX,
00705 .codec_tag= (const AVCodecTag* const []){ff_codec_wav_tags, 0},
00706 .priv_class = &wav_demuxer_class,
00707 };
00708 #endif
00709
00710
00711 #if CONFIG_W64_DEMUXER
00712 static const uint8_t guid_riff[16] = { 'r', 'i', 'f', 'f',
00713 0x2E, 0x91, 0xCF, 0x11, 0xA5, 0xD6, 0x28, 0xDB, 0x04, 0xC1, 0x00, 0x00 };
00714
00715 static const uint8_t guid_wave[16] = { 'w', 'a', 'v', 'e',
00716 0xF3, 0xAC, 0xD3, 0x11, 0x8C, 0xD1, 0x00, 0xC0, 0x4F, 0x8E, 0xDB, 0x8A };
00717
00718 static const uint8_t guid_fmt [16] = { 'f', 'm', 't', ' ',
00719 0xF3, 0xAC, 0xD3, 0x11, 0x8C, 0xD1, 0x00, 0xC0, 0x4F, 0x8E, 0xDB, 0x8A };
00720
00721 static int w64_probe(AVProbeData *p)
00722 {
00723 if (p->buf_size <= 40)
00724 return 0;
00725 if (!memcmp(p->buf, guid_riff, 16) &&
00726 !memcmp(p->buf + 24, guid_wave, 16))
00727 return AVPROBE_SCORE_MAX;
00728 else
00729 return 0;
00730 }
00731
00732 static int w64_read_header(AVFormatContext *s, AVFormatParameters *ap)
00733 {
00734 int64_t size;
00735 AVIOContext *pb = s->pb;
00736 WAVContext *wav = s->priv_data;
00737 AVStream *st;
00738 uint8_t guid[16];
00739 int ret;
00740
00741 avio_read(pb, guid, 16);
00742 if (memcmp(guid, guid_riff, 16))
00743 return -1;
00744
00745 if (avio_rl64(pb) < 16 + 8 + 16 + 8 + 16 + 8)
00746 return -1;
00747
00748 avio_read(pb, guid, 16);
00749 if (memcmp(guid, guid_wave, 16)) {
00750 av_log(s, AV_LOG_ERROR, "could not find wave guid\n");
00751 return -1;
00752 }
00753
00754 size = find_guid(pb, guid_fmt);
00755 if (size < 0) {
00756 av_log(s, AV_LOG_ERROR, "could not find fmt guid\n");
00757 return -1;
00758 }
00759
00760 st = avformat_new_stream(s, NULL);
00761 if (!st)
00762 return AVERROR(ENOMEM);
00763
00764
00765 ret = ff_get_wav_header(pb, st->codec, size - 24);
00766 if (ret < 0)
00767 return ret;
00768 avio_skip(pb, FFALIGN(size, INT64_C(8)) - size);
00769
00770 st->need_parsing = AVSTREAM_PARSE_FULL;
00771
00772 avpriv_set_pts_info(st, 64, 1, st->codec->sample_rate);
00773
00774 size = find_guid(pb, guid_data);
00775 if (size < 0) {
00776 av_log(s, AV_LOG_ERROR, "could not find data guid\n");
00777 return -1;
00778 }
00779 wav->data_end = avio_tell(pb) + size - 24;
00780 wav->w64 = 1;
00781
00782 return 0;
00783 }
00784
00785 AVInputFormat ff_w64_demuxer = {
00786 .name = "w64",
00787 .long_name = NULL_IF_CONFIG_SMALL("Sony Wave64 format"),
00788 .priv_data_size = sizeof(WAVContext),
00789 .read_probe = w64_probe,
00790 .read_header = w64_read_header,
00791 .read_packet = wav_read_packet,
00792 .read_seek = wav_read_seek,
00793 .flags = AVFMT_GENERIC_INDEX,
00794 .codec_tag = (const AVCodecTag* const []){ff_codec_wav_tags, 0},
00795 };
00796 #endif