3 * Copyright (c) 2001, 2002 Fabrice Bellard
7 * Copyright (c) 2009 Daniel Verkamp
11 * This file is part of FFmpeg.
13 * FFmpeg is free software; you can redistribute it and/or
14 * modify it under the terms of the GNU Lesser General Public
15 * License as published by the Free Software Foundation; either
16 * version 2.1 of the License, or (at your option) any later version.
18 * FFmpeg is distributed in the hope that it will be useful,
19 * but WITHOUT ANY WARRANTY; without even the implied warranty of
20 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
21 * Lesser General Public License for more details.
23 * You should have received a copy of the GNU Lesser General Public
24 * License along with FFmpeg; if not, write to the Free Software
25 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
30 #include "libavutil/avassert.h"
31 #include "libavutil/dict.h"
32 #include "libavutil/intreadwrite.h"
33 #include "libavutil/log.h"
34 #include "libavutil/mathematics.h"
35 #include "libavutil/opt.h"
38 #include "avio_internal.h"
47 typedef struct WAVDemuxContext {
53 int smv_frames_per_jpeg;
63 int unaligned; // e.g. if an odd number of bytes ID3 tag was prepended
64 int rifx; // RIFX: integer byte order for parameters is big endian
67 static void set_spdif(AVFormatContext *s, WAVDemuxContext *wav)
69 if (CONFIG_SPDIF_DEMUXER && s->streams[0]->codecpar->codec_tag == 1) {
72 int ret = ffio_ensure_seekback(s->pb, len);
75 uint8_t *buf = av_malloc(len);
77 ret = AVERROR(ENOMEM);
79 int64_t pos = avio_tell(s->pb);
80 len = ret = avio_read(s->pb, buf, len);
82 ret = ff_spdif_probe(buf, len, &codec);
83 if (ret > AVPROBE_SCORE_EXTENSION) {
84 s->streams[0]->codecpar->codec_id = codec;
88 avio_seek(s->pb, pos, SEEK_SET);
94 av_log(s, AV_LOG_WARNING, "Cannot check for SPDIF\n");
98 #if CONFIG_WAV_DEMUXER
100 static int64_t next_tag(AVIOContext *pb, uint32_t *tag, int big_endian)
102 *tag = avio_rl32(pb);
104 return avio_rl32(pb);
106 return avio_rb32(pb);
110 /* RIFF chunks are always at even offsets relative to where they start. */
111 static int64_t wav_seek_tag(WAVDemuxContext * wav, AVIOContext *s, int64_t offset, int whence)
113 offset += offset < INT64_MAX && offset + wav->unaligned & 1;
115 return avio_seek(s, offset, whence);
118 /* return the size of the found tag */
119 static int64_t find_tag(WAVDemuxContext * wav, AVIOContext *pb, uint32_t tag1)
127 size = next_tag(pb, &tag, wav->rifx);
130 wav_seek_tag(wav, pb, size, SEEK_CUR);
135 static int wav_probe(const AVProbeData *p)
137 /* check file header */
138 if (p->buf_size <= 32)
140 if (!memcmp(p->buf + 8, "WAVE", 4)) {
141 if (!memcmp(p->buf, "RIFF", 4) || !memcmp(p->buf, "RIFX", 4))
142 /* Since the ACT demuxer has a standard WAV header at the top of
143 * its own, the returned score is decreased to avoid a probe
144 * conflict between ACT and WAV. */
145 return AVPROBE_SCORE_MAX - 1;
146 else if ((!memcmp(p->buf, "RF64", 4) ||
147 !memcmp(p->buf, "BW64", 4)) &&
148 !memcmp(p->buf + 12, "ds64", 4))
149 return AVPROBE_SCORE_MAX;
154 static void handle_stream_probing(AVStream *st)
156 if (st->codecpar->codec_id == AV_CODEC_ID_PCM_S16LE) {
157 st->request_probe = AVPROBE_SCORE_EXTENSION;
158 st->probe_packets = FFMIN(st->probe_packets, 32);
162 static int wav_parse_fmt_tag(AVFormatContext *s, int64_t size, AVStream **st)
164 AVIOContext *pb = s->pb;
165 WAVDemuxContext *wav = s->priv_data;
168 /* parse fmt header */
169 *st = avformat_new_stream(s, NULL);
171 return AVERROR(ENOMEM);
173 ret = ff_get_wav_header(s, pb, (*st)->codecpar, size, wav->rifx);
176 handle_stream_probing(*st);
178 (*st)->need_parsing = AVSTREAM_PARSE_FULL_RAW;
180 avpriv_set_pts_info(*st, 64, 1, (*st)->codecpar->sample_rate);
185 static int wav_parse_xma2_tag(AVFormatContext *s, int64_t size, AVStream **st)
187 AVIOContext *pb = s->pb;
188 int version, num_streams, i, channels = 0, ret;
191 return AVERROR_INVALIDDATA;
193 *st = avformat_new_stream(s, NULL);
195 return AVERROR(ENOMEM);
197 (*st)->codecpar->codec_type = AVMEDIA_TYPE_AUDIO;
198 (*st)->codecpar->codec_id = AV_CODEC_ID_XMA2;
199 (*st)->need_parsing = AVSTREAM_PARSE_FULL_RAW;
201 version = avio_r8(pb);
202 if (version != 3 && version != 4)
203 return AVERROR_INVALIDDATA;
204 num_streams = avio_r8(pb);
205 if (size != (32 + ((version==3)?0:8) + 4*num_streams))
206 return AVERROR_INVALIDDATA;
208 (*st)->codecpar->sample_rate = avio_rb32(pb);
212 (*st)->duration = avio_rb32(pb);
215 for (i = 0; i < num_streams; i++) {
216 channels += avio_r8(pb);
219 (*st)->codecpar->channels = channels;
221 if ((*st)->codecpar->channels <= 0 || (*st)->codecpar->sample_rate <= 0)
222 return AVERROR_INVALIDDATA;
224 avpriv_set_pts_info(*st, 64, 1, (*st)->codecpar->sample_rate);
226 avio_seek(pb, -size, SEEK_CUR);
227 if ((ret = ff_get_extradata(s, (*st)->codecpar, pb, size)) < 0)
233 static inline int wav_parse_bext_string(AVFormatContext *s, const char *key,
239 av_assert0(length < sizeof(temp));
240 if ((ret = avio_read(s->pb, temp, length)) != length)
241 return ret < 0 ? ret : AVERROR_INVALIDDATA;
246 return av_dict_set(&s->metadata, key, temp, 0);
251 static int wav_parse_bext_tag(AVFormatContext *s, int64_t size)
253 char temp[131], *coding_history;
255 uint64_t time_reference;
256 int64_t umid_parts[8], umid_mask = 0;
258 if ((ret = wav_parse_bext_string(s, "description", 256)) < 0 ||
259 (ret = wav_parse_bext_string(s, "originator", 32)) < 0 ||
260 (ret = wav_parse_bext_string(s, "originator_reference", 32)) < 0 ||
261 (ret = wav_parse_bext_string(s, "origination_date", 10)) < 0 ||
262 (ret = wav_parse_bext_string(s, "origination_time", 8)) < 0)
265 time_reference = avio_rl64(s->pb);
266 snprintf(temp, sizeof(temp), "%"PRIu64, time_reference);
267 if ((ret = av_dict_set(&s->metadata, "time_reference", temp, 0)) < 0)
270 /* check if version is >= 1, in which case an UMID may be present */
271 if (avio_rl16(s->pb) >= 1) {
272 for (x = 0; x < 8; x++)
273 umid_mask |= umid_parts[x] = avio_rb64(s->pb);
276 /* the string formatting below is per SMPTE 330M-2004 Annex C */
277 if (umid_parts[4] == 0 && umid_parts[5] == 0 &&
278 umid_parts[6] == 0 && umid_parts[7] == 0) {
280 snprintf(temp, sizeof(temp),
281 "0x%016"PRIX64"%016"PRIX64"%016"PRIX64"%016"PRIX64,
282 umid_parts[0], umid_parts[1],
283 umid_parts[2], umid_parts[3]);
286 snprintf(temp, sizeof(temp),
287 "0x%016"PRIX64"%016"PRIX64"%016"PRIX64"%016"PRIX64
288 "%016"PRIX64"%016"PRIX64"%016"PRIX64"%016"PRIX64,
289 umid_parts[0], umid_parts[1],
290 umid_parts[2], umid_parts[3],
291 umid_parts[4], umid_parts[5],
292 umid_parts[6], umid_parts[7]);
295 if ((ret = av_dict_set(&s->metadata, "umid", temp, 0)) < 0)
299 avio_skip(s->pb, 190);
301 avio_skip(s->pb, 254);
304 /* CodingHistory present */
307 if (!(coding_history = av_malloc(size + 1)))
308 return AVERROR(ENOMEM);
310 if ((ret = avio_read(s->pb, coding_history, size)) != size) {
311 av_free(coding_history);
312 return ret < 0 ? ret : AVERROR_INVALIDDATA;
315 coding_history[size] = 0;
316 if ((ret = av_dict_set(&s->metadata, "coding_history", coding_history,
317 AV_DICT_DONT_STRDUP_VAL)) < 0)
324 static const AVMetadataConv wav_metadata_conv[] = {
325 { "description", "comment" },
326 { "originator", "encoded_by" },
327 { "origination_date", "date" },
328 { "origination_time", "creation_time" },
333 static int wav_read_header(AVFormatContext *s)
335 int64_t size, av_uninit(data_size);
336 int64_t sample_count = 0;
337 int rf64 = 0, bw64 = 0;
339 AVIOContext *pb = s->pb;
341 WAVDemuxContext *wav = s->priv_data;
342 int ret, got_fmt = 0, got_xma2 = 0;
343 int64_t next_tag_ofs, data_ofs = -1;
345 wav->unaligned = avio_tell(s->pb) & 1;
347 wav->smv_data_ofs = -1;
352 case MKTAG('R', 'I', 'F', 'F'):
354 case MKTAG('R', 'I', 'F', 'X'):
357 case MKTAG('R', 'F', '6', '4'):
360 case MKTAG('B', 'W', '6', '4'):
364 av_log(s, AV_LOG_ERROR, "invalid start code %s in RIFF header\n",
366 return AVERROR_INVALIDDATA;
369 /* read chunk size */
373 if (avio_rl32(pb) != MKTAG('W', 'A', 'V', 'E')) {
374 av_log(s, AV_LOG_ERROR, "invalid format in RIFF header\n");
375 return AVERROR_INVALIDDATA;
379 if (avio_rl32(pb) != MKTAG('d', 's', '6', '4'))
380 return AVERROR_INVALIDDATA;
381 size = avio_rl32(pb);
383 return AVERROR_INVALIDDATA;
384 avio_rl64(pb); /* RIFF size */
386 data_size = avio_rl64(pb);
387 sample_count = avio_rl64(pb);
389 if (data_size < 0 || sample_count < 0) {
390 av_log(s, AV_LOG_ERROR, "negative data_size and/or sample_count in "
391 "ds64: data_size = %"PRId64", sample_count = %"PRId64"\n",
392 data_size, sample_count);
393 return AVERROR_INVALIDDATA;
395 avio_skip(pb, size - 24); /* skip rest of ds64 chunk */
401 size = next_tag(pb, &tag, wav->rifx);
402 next_tag_ofs = avio_tell(pb) + size;
408 case MKTAG('f', 'm', 't', ' '):
409 /* only parse the first 'fmt ' tag found */
410 if (!got_xma2 && !got_fmt && (ret = wav_parse_fmt_tag(s, size, &st)) < 0) {
413 av_log(s, AV_LOG_WARNING, "found more than one 'fmt ' tag\n");
417 case MKTAG('X', 'M', 'A', '2'):
418 /* only parse the first 'XMA2' tag found */
419 if (!got_fmt && !got_xma2 && (ret = wav_parse_xma2_tag(s, size, &st)) < 0) {
422 av_log(s, AV_LOG_WARNING, "found more than one 'XMA2' tag\n");
426 case MKTAG('d', 'a', 't', 'a'):
427 if (!(pb->seekable & AVIO_SEEKABLE_NORMAL) && !got_fmt && !got_xma2) {
428 av_log(s, AV_LOG_ERROR,
429 "found no 'fmt ' tag before the 'data' tag\n");
430 return AVERROR_INVALIDDATA;
434 next_tag_ofs = wav->data_end = avio_tell(pb) + data_size;
435 } else if (size != 0xFFFFFFFF) {
437 next_tag_ofs = wav->data_end = size ? next_tag_ofs : INT64_MAX;
439 av_log(s, AV_LOG_WARNING, "Ignoring maximum wav data size, "
440 "file may be invalid\n");
442 next_tag_ofs = wav->data_end = INT64_MAX;
445 data_ofs = avio_tell(pb);
447 /* don't look for footer metadata if we can't seek or if we don't
448 * know where the data tag ends
450 if (!(pb->seekable & AVIO_SEEKABLE_NORMAL) || (!(rf64 && !bw64) && !size))
453 case MKTAG('f', 'a', 'c', 't'):
455 sample_count = (!wav->rifx ? avio_rl32(pb) : avio_rb32(pb));
457 case MKTAG('b', 'e', 'x', 't'):
458 if ((ret = wav_parse_bext_tag(s, size)) < 0)
461 case MKTAG('S','M','V','0'):
463 av_log(s, AV_LOG_ERROR, "found no 'fmt ' tag before the 'SMV0' tag\n");
464 return AVERROR_INVALIDDATA;
466 // SMV file, a wav file with video appended.
467 if (size != MKTAG('0','2','0','0')) {
468 av_log(s, AV_LOG_ERROR, "Unknown SMV version found\n");
471 av_log(s, AV_LOG_DEBUG, "Found SMV data\n");
472 wav->smv_given_first = 0;
473 vst = avformat_new_stream(s, NULL);
475 return AVERROR(ENOMEM);
478 vst->codecpar->codec_type = AVMEDIA_TYPE_VIDEO;
479 vst->codecpar->codec_id = AV_CODEC_ID_SMVJPEG;
480 vst->codecpar->width = avio_rl24(pb);
481 vst->codecpar->height = avio_rl24(pb);
482 if ((ret = ff_alloc_extradata(vst->codecpar, 4)) < 0) {
483 av_log(s, AV_LOG_ERROR, "Could not allocate extradata.\n");
486 size = avio_rl24(pb);
487 wav->smv_data_ofs = avio_tell(pb) + (size - 5) * 3;
489 wav->smv_block_size = avio_rl24(pb);
490 avpriv_set_pts_info(vst, 32, 1, avio_rl24(pb));
491 vst->duration = avio_rl24(pb);
494 wav->smv_frames_per_jpeg = avio_rl24(pb);
495 if (wav->smv_frames_per_jpeg > 65536) {
496 av_log(s, AV_LOG_ERROR, "too many frames per jpeg\n");
497 return AVERROR_INVALIDDATA;
499 AV_WL32(vst->codecpar->extradata, wav->smv_frames_per_jpeg);
502 case MKTAG('L', 'I', 'S', 'T'):
503 case MKTAG('l', 'i', 's', 't'):
505 av_log(s, AV_LOG_ERROR, "too short LIST tag\n");
506 return AVERROR_INVALIDDATA;
508 switch (avio_rl32(pb)) {
509 case MKTAG('I', 'N', 'F', 'O'):
510 ff_read_riff_info(s, size - 4);
512 case MKTAG('a', 'd', 't', 'l'):
513 if (s->nb_chapters > 0) {
514 while (avio_tell(pb) < next_tag_ofs &&
517 unsigned id, sub_size;
519 if (avio_rl32(pb) != MKTAG('l', 'a', 'b', 'l'))
522 sub_size = avio_rl32(pb);
526 avio_get_str(pb, sub_size - 4, cue_label, sizeof(cue_label));
527 avio_skip(pb, avio_tell(pb) & 1);
529 for (int i = 0; i < s->nb_chapters; i++) {
530 if (s->chapters[i]->id == id) {
531 av_dict_set(&s->chapters[i]->metadata, "title", cue_label, 0);
540 case MKTAG('I', 'D', '3', ' '):
541 case MKTAG('i', 'd', '3', ' '): {
542 ID3v2ExtraMeta *id3v2_extra_meta = NULL;
543 ff_id3v2_read_dict(pb, &s->internal->id3v2_meta, ID3v2_DEFAULT_MAGIC, &id3v2_extra_meta);
544 if (id3v2_extra_meta) {
545 ff_id3v2_parse_apic(s, id3v2_extra_meta);
546 ff_id3v2_parse_chapters(s, id3v2_extra_meta);
547 ff_id3v2_parse_priv(s, id3v2_extra_meta);
549 ff_id3v2_free_extra_meta(&id3v2_extra_meta);
552 case MKTAG('c', 'u', 'e', ' '):
553 if (size >= 4 && got_fmt && st->codecpar->sample_rate > 0) {
554 AVRational tb = {1, st->codecpar->sample_rate};
555 unsigned nb_cues = avio_rl32(pb);
557 if (size >= nb_cues * 24LL + 4LL) {
558 for (int i = 0; i < nb_cues; i++) {
559 unsigned offset, id = avio_rl32(pb);
562 offset = avio_rl32(pb);
564 if (!avpriv_new_chapter(s, id, tb, offset, AV_NOPTS_VALUE, NULL))
565 return AVERROR(ENOMEM);
572 /* seek to next tag unless we know that we'll run into EOF */
573 if ((avio_size(pb) > 0 && next_tag_ofs >= avio_size(pb)) ||
574 wav_seek_tag(wav, pb, next_tag_ofs, SEEK_SET) < 0) {
580 if (!got_fmt && !got_xma2) {
581 av_log(s, AV_LOG_ERROR, "no 'fmt ' or 'XMA2' tag found\n");
582 return AVERROR_INVALIDDATA;
586 av_log(s, AV_LOG_ERROR, "no 'data' tag found\n");
587 return AVERROR_INVALIDDATA;
590 avio_seek(pb, data_ofs, SEEK_SET);
592 if (data_size > (INT64_MAX>>3)) {
593 av_log(s, AV_LOG_WARNING, "Data size %"PRId64" is too large\n", data_size);
597 if ( st->codecpar->bit_rate > 0 && data_size > 0
598 && st->codecpar->sample_rate > 0
599 && sample_count > 0 && st->codecpar->channels > 1
600 && sample_count % st->codecpar->channels == 0) {
601 if (fabs(8.0 * data_size * st->codecpar->channels * st->codecpar->sample_rate /
602 sample_count /st->codecpar->bit_rate - 1.0) < 0.3)
603 sample_count /= st->codecpar->channels;
606 if ( data_size > 0 && sample_count && st->codecpar->channels
607 && (data_size << 3) / sample_count / st->codecpar->channels > st->codecpar->bits_per_coded_sample + 1) {
608 av_log(s, AV_LOG_WARNING, "ignoring wrong sample_count %"PRId64"\n", sample_count);
612 /* G.729 hack (for Ticket4577)
613 * FIXME: Come up with cleaner, more general solution */
614 if (st->codecpar->codec_id == AV_CODEC_ID_G729 && sample_count && (data_size << 3) > sample_count) {
615 av_log(s, AV_LOG_WARNING, "ignoring wrong sample_count %"PRId64"\n", sample_count);
619 if (!sample_count || av_get_exact_bits_per_sample(st->codecpar->codec_id) > 0)
620 if ( st->codecpar->channels
622 && av_get_bits_per_sample(st->codecpar->codec_id)
623 && wav->data_end <= avio_size(pb))
624 sample_count = (data_size << 3)
626 (st->codecpar->channels * (uint64_t)av_get_bits_per_sample(st->codecpar->codec_id));
629 st->duration = sample_count;
631 if (st->codecpar->codec_id == AV_CODEC_ID_PCM_S32LE &&
632 st->codecpar->block_align == st->codecpar->channels * 4 &&
633 st->codecpar->bits_per_coded_sample == 32 &&
634 st->codecpar->extradata_size == 2 &&
635 AV_RL16(st->codecpar->extradata) == 1) {
636 st->codecpar->codec_id = AV_CODEC_ID_PCM_F16LE;
637 st->codecpar->bits_per_coded_sample = 16;
638 } else if (st->codecpar->codec_id == AV_CODEC_ID_PCM_S24LE &&
639 st->codecpar->block_align == st->codecpar->channels * 4 &&
640 st->codecpar->bits_per_coded_sample == 24) {
641 st->codecpar->codec_id = AV_CODEC_ID_PCM_F24LE;
642 } else if (st->codecpar->codec_id == AV_CODEC_ID_XMA1 ||
643 st->codecpar->codec_id == AV_CODEC_ID_XMA2) {
644 st->codecpar->block_align = 2048;
645 } else if (st->codecpar->codec_id == AV_CODEC_ID_ADPCM_MS && st->codecpar->channels > 2) {
646 st->codecpar->block_align *= st->codecpar->channels;
649 ff_metadata_conv_ctx(s, NULL, wav_metadata_conv);
650 ff_metadata_conv_ctx(s, NULL, ff_riff_info_conv);
658 * Find chunk with w64 GUID by skipping over other chunks.
659 * @return the size of the found chunk
661 static int64_t find_guid(AVIOContext *pb, const uint8_t guid1[16])
666 while (!avio_feof(pb)) {
667 avio_read(pb, guid, 16);
668 size = avio_rl64(pb);
670 return AVERROR_INVALIDDATA;
671 if (!memcmp(guid, guid1, 16))
673 avio_skip(pb, FFALIGN(size, INT64_C(8)) - 24);
678 static int wav_read_packet(AVFormatContext *s, AVPacket *pkt)
683 WAVDemuxContext *wav = s->priv_data;
685 if (CONFIG_SPDIF_DEMUXER && wav->spdif == 1)
686 return ff_spdif_read_packet(s, pkt);
688 if (wav->smv_data_ofs > 0) {
689 int64_t audio_dts, video_dts;
691 audio_dts = (int32_t)s->streams[0]->cur_dts;
692 video_dts = (int32_t)s->streams[1]->cur_dts;
694 if (audio_dts != AV_NOPTS_VALUE && video_dts != AV_NOPTS_VALUE) {
695 /*We always return a video frame first to get the pixel format first*/
696 wav->smv_last_stream = wav->smv_given_first ?
697 av_compare_ts(video_dts, s->streams[1]->time_base,
698 audio_dts, s->streams[0]->time_base) > 0 : 0;
699 wav->smv_given_first = 1;
701 wav->smv_last_stream = !wav->smv_last_stream;
702 wav->smv_last_stream |= wav->audio_eof;
703 wav->smv_last_stream &= !wav->smv_eof;
704 if (wav->smv_last_stream) {
705 uint64_t old_pos = avio_tell(s->pb);
706 uint64_t new_pos = wav->smv_data_ofs +
707 wav->smv_block * wav->smv_block_size;
708 if (avio_seek(s->pb, new_pos, SEEK_SET) < 0) {
712 size = avio_rl24(s->pb);
713 ret = av_get_packet(s->pb, pkt, size);
717 pkt->pts = wav->smv_block * wav->smv_frames_per_jpeg + wav->smv_cur_pt;
719 if (wav->smv_frames_per_jpeg > 0)
720 wav->smv_cur_pt %= wav->smv_frames_per_jpeg;
721 if (!wav->smv_cur_pt)
724 pkt->stream_index = 1;
726 avio_seek(s->pb, old_pos, SEEK_SET);
727 if (ret == AVERROR_EOF) {
737 left = wav->data_end - avio_tell(s->pb);
738 if (wav->ignore_length)
741 if (CONFIG_W64_DEMUXER && wav->w64)
742 left = find_guid(s->pb, ff_w64_guid_data) - 24;
744 left = find_tag(wav, s->pb, MKTAG('d', 'a', 't', 'a'));
747 if (wav->smv_data_ofs > 0 && !wav->smv_eof)
751 wav->data_end = avio_tell(s->pb) + left;
754 size = wav->max_size;
755 if (st->codecpar->block_align > 1) {
756 if (size < st->codecpar->block_align)
757 size = st->codecpar->block_align;
758 size = (size / st->codecpar->block_align) * st->codecpar->block_align;
760 size = FFMIN(size, left);
761 ret = av_get_packet(s->pb, pkt, size);
764 pkt->stream_index = 0;
769 static int wav_read_seek(AVFormatContext *s,
770 int stream_index, int64_t timestamp, int flags)
772 WAVDemuxContext *wav = s->priv_data;
776 if (wav->smv_data_ofs > 0) {
777 int64_t smv_timestamp = timestamp;
778 if (stream_index == 0)
779 smv_timestamp = av_rescale_q(timestamp, s->streams[0]->time_base, s->streams[1]->time_base);
781 timestamp = av_rescale_q(smv_timestamp, s->streams[1]->time_base, s->streams[0]->time_base);
782 if (wav->smv_frames_per_jpeg > 0) {
783 wav->smv_block = smv_timestamp / wav->smv_frames_per_jpeg;
784 wav->smv_cur_pt = smv_timestamp % wav->smv_frames_per_jpeg;
789 switch (st->codecpar->codec_id) {
790 case AV_CODEC_ID_MP2:
791 case AV_CODEC_ID_MP3:
792 case AV_CODEC_ID_AC3:
793 case AV_CODEC_ID_DTS:
794 case AV_CODEC_ID_XMA2:
795 /* use generic seeking with dynamically generated indexes */
800 return ff_pcm_read_seek(s, stream_index, timestamp, flags);
803 #define OFFSET(x) offsetof(WAVDemuxContext, x)
804 #define DEC AV_OPT_FLAG_DECODING_PARAM
805 static const AVOption demux_options[] = {
806 { "ignore_length", "Ignore length", OFFSET(ignore_length), AV_OPT_TYPE_BOOL, { .i64 = 0 }, 0, 1, DEC },
807 { "max_size", "max size of single packet", OFFSET(max_size), AV_OPT_TYPE_INT, { .i64 = 4096 }, 1024, 1 << 22, DEC },
811 static const AVClass wav_demuxer_class = {
812 .class_name = "WAV demuxer",
813 .item_name = av_default_item_name,
814 .option = demux_options,
815 .version = LIBAVUTIL_VERSION_INT,
817 AVInputFormat ff_wav_demuxer = {
819 .long_name = NULL_IF_CONFIG_SMALL("WAV / WAVE (Waveform Audio)"),
820 .priv_data_size = sizeof(WAVDemuxContext),
821 .read_probe = wav_probe,
822 .read_header = wav_read_header,
823 .read_packet = wav_read_packet,
824 .read_seek = wav_read_seek,
825 .flags = AVFMT_GENERIC_INDEX,
826 .codec_tag = (const AVCodecTag * const []) { ff_codec_wav_tags, 0 },
827 .priv_class = &wav_demuxer_class,
829 #endif /* CONFIG_WAV_DEMUXER */
831 #if CONFIG_W64_DEMUXER
832 static int w64_probe(const AVProbeData *p)
834 if (p->buf_size <= 40)
836 if (!memcmp(p->buf, ff_w64_guid_riff, 16) &&
837 !memcmp(p->buf + 24, ff_w64_guid_wave, 16))
838 return AVPROBE_SCORE_MAX;
843 static int w64_read_header(AVFormatContext *s)
845 int64_t size, data_ofs = 0;
846 AVIOContext *pb = s->pb;
847 WAVDemuxContext *wav = s->priv_data;
852 avio_read(pb, guid, 16);
853 if (memcmp(guid, ff_w64_guid_riff, 16))
854 return AVERROR_INVALIDDATA;
856 /* riff + wave + fmt + sizes */
857 if (avio_rl64(pb) < 16 + 8 + 16 + 8 + 16 + 8)
858 return AVERROR_INVALIDDATA;
860 avio_read(pb, guid, 16);
861 if (memcmp(guid, ff_w64_guid_wave, 16)) {
862 av_log(s, AV_LOG_ERROR, "could not find wave guid\n");
863 return AVERROR_INVALIDDATA;
868 st = avformat_new_stream(s, NULL);
870 return AVERROR(ENOMEM);
872 while (!avio_feof(pb)) {
873 if (avio_read(pb, guid, 16) != 16)
875 size = avio_rl64(pb);
876 if (size <= 24 || INT64_MAX - size < avio_tell(pb))
877 return AVERROR_INVALIDDATA;
879 if (!memcmp(guid, ff_w64_guid_fmt, 16)) {
880 /* subtract chunk header size - normal wav file doesn't count it */
881 ret = ff_get_wav_header(s, pb, st->codecpar, size - 24, 0);
884 avio_skip(pb, FFALIGN(size, INT64_C(8)) - size);
886 avpriv_set_pts_info(st, 64, 1, st->codecpar->sample_rate);
887 } else if (!memcmp(guid, ff_w64_guid_fact, 16)) {
890 samples = avio_rl64(pb);
892 st->duration = samples;
893 avio_skip(pb, FFALIGN(size, INT64_C(8)) - 32);
894 } else if (!memcmp(guid, ff_w64_guid_data, 16)) {
895 wav->data_end = avio_tell(pb) + size - 24;
897 data_ofs = avio_tell(pb);
898 if (!(pb->seekable & AVIO_SEEKABLE_NORMAL))
901 avio_skip(pb, size - 24);
902 } else if (!memcmp(guid, ff_w64_guid_summarylist, 16)) {
903 int64_t start, end, cur;
904 uint32_t count, chunk_size, i;
906 start = avio_tell(pb);
907 end = start + FFALIGN(size, INT64_C(8)) - 24;
908 count = avio_rl32(pb);
910 for (i = 0; i < count; i++) {
911 char chunk_key[5], *value;
913 if (avio_feof(pb) || (cur = avio_tell(pb)) < 0 || cur > end - 8 /* = tag + size */)
917 avio_read(pb, chunk_key, 4);
918 chunk_size = avio_rl32(pb);
919 if (chunk_size == UINT32_MAX)
920 return AVERROR_INVALIDDATA;
922 value = av_mallocz(chunk_size + 1);
924 return AVERROR(ENOMEM);
926 ret = avio_get_str16le(pb, chunk_size, value, chunk_size);
927 avio_skip(pb, chunk_size - ret);
929 av_dict_set(&s->metadata, chunk_key, value, AV_DICT_DONT_STRDUP_VAL);
932 avio_skip(pb, end - avio_tell(pb));
934 av_log(s, AV_LOG_DEBUG, "unknown guid: "FF_PRI_GUID"\n", FF_ARG_GUID(guid));
935 avio_skip(pb, FFALIGN(size, INT64_C(8)) - 24);
942 ff_metadata_conv_ctx(s, NULL, wav_metadata_conv);
943 ff_metadata_conv_ctx(s, NULL, ff_riff_info_conv);
945 handle_stream_probing(st);
946 st->need_parsing = AVSTREAM_PARSE_FULL_RAW;
948 avio_seek(pb, data_ofs, SEEK_SET);
955 #define OFFSET(x) offsetof(WAVDemuxContext, x)
956 #define DEC AV_OPT_FLAG_DECODING_PARAM
957 static const AVOption w64_demux_options[] = {
958 { "max_size", "max size of single packet", OFFSET(max_size), AV_OPT_TYPE_INT, { .i64 = 4096 }, 1024, 1 << 22, DEC },
962 static const AVClass w64_demuxer_class = {
963 .class_name = "W64 demuxer",
964 .item_name = av_default_item_name,
965 .option = w64_demux_options,
966 .version = LIBAVUTIL_VERSION_INT,
969 AVInputFormat ff_w64_demuxer = {
971 .long_name = NULL_IF_CONFIG_SMALL("Sony Wave64"),
972 .priv_data_size = sizeof(WAVDemuxContext),
973 .read_probe = w64_probe,
974 .read_header = w64_read_header,
975 .read_packet = wav_read_packet,
976 .read_seek = wav_read_seek,
977 .flags = AVFMT_GENERIC_INDEX,
978 .codec_tag = (const AVCodecTag * const []) { ff_codec_wav_tags, 0 },
979 .priv_class = &w64_demuxer_class,
981 #endif /* CONFIG_W64_DEMUXER */