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;
62 int unaligned; // e.g. if an odd number of bytes ID3 tag was prepended
63 int rifx; // RIFX: integer byte order for parameters is big endian
66 static void set_spdif(AVFormatContext *s, WAVDemuxContext *wav)
68 if (CONFIG_SPDIF_DEMUXER && s->streams[0]->codecpar->codec_tag == 1) {
71 int ret = ffio_ensure_seekback(s->pb, len);
74 uint8_t *buf = av_malloc(len);
76 ret = AVERROR(ENOMEM);
78 int64_t pos = avio_tell(s->pb);
79 len = ret = avio_read(s->pb, buf, len);
81 ret = ff_spdif_probe(buf, len, &codec);
82 if (ret > AVPROBE_SCORE_EXTENSION) {
83 s->streams[0]->codecpar->codec_id = codec;
87 avio_seek(s->pb, pos, SEEK_SET);
93 av_log(s, AV_LOG_WARNING, "Cannot check for SPDIF\n");
97 #if CONFIG_WAV_DEMUXER
99 static int64_t next_tag(AVIOContext *pb, uint32_t *tag, int big_endian)
101 *tag = avio_rl32(pb);
103 return avio_rl32(pb);
105 return avio_rb32(pb);
109 /* RIFF chunks are always at even offsets relative to where they start. */
110 static int64_t wav_seek_tag(WAVDemuxContext * wav, AVIOContext *s, int64_t offset, int whence)
112 offset += offset < INT64_MAX && offset + wav->unaligned & 1;
114 return avio_seek(s, offset, whence);
117 /* return the size of the found tag */
118 static int64_t find_tag(WAVDemuxContext * wav, AVIOContext *pb, uint32_t tag1)
126 size = next_tag(pb, &tag, wav->rifx);
129 wav_seek_tag(wav, pb, size, SEEK_CUR);
134 static int wav_probe(const AVProbeData *p)
136 /* check file header */
137 if (p->buf_size <= 32)
139 if (!memcmp(p->buf + 8, "WAVE", 4)) {
140 if (!memcmp(p->buf, "RIFF", 4) || !memcmp(p->buf, "RIFX", 4))
141 /* Since the ACT demuxer has a standard WAV header at the top of
142 * its own, the returned score is decreased to avoid a probe
143 * conflict between ACT and WAV. */
144 return AVPROBE_SCORE_MAX - 1;
145 else if ((!memcmp(p->buf, "RF64", 4) ||
146 !memcmp(p->buf, "BW64", 4)) &&
147 !memcmp(p->buf + 12, "ds64", 4))
148 return AVPROBE_SCORE_MAX;
153 static void handle_stream_probing(AVStream *st)
155 if (st->codecpar->codec_id == AV_CODEC_ID_PCM_S16LE) {
156 st->internal->request_probe = AVPROBE_SCORE_EXTENSION;
157 st->probe_packets = FFMIN(st->probe_packets, 32);
161 static int wav_parse_fmt_tag(AVFormatContext *s, int64_t size, AVStream **st)
163 AVIOContext *pb = s->pb;
164 WAVDemuxContext *wav = s->priv_data;
167 /* parse fmt header */
168 *st = avformat_new_stream(s, NULL);
170 return AVERROR(ENOMEM);
172 ret = ff_get_wav_header(s, pb, (*st)->codecpar, size, wav->rifx);
175 handle_stream_probing(*st);
177 (*st)->need_parsing = AVSTREAM_PARSE_FULL_RAW;
179 avpriv_set_pts_info(*st, 64, 1, (*st)->codecpar->sample_rate);
184 static int wav_parse_xma2_tag(AVFormatContext *s, int64_t size, AVStream **st)
186 AVIOContext *pb = s->pb;
187 int version, num_streams, i, channels = 0, ret;
190 return AVERROR_INVALIDDATA;
192 *st = avformat_new_stream(s, NULL);
194 return AVERROR(ENOMEM);
196 (*st)->codecpar->codec_type = AVMEDIA_TYPE_AUDIO;
197 (*st)->codecpar->codec_id = AV_CODEC_ID_XMA2;
198 (*st)->need_parsing = AVSTREAM_PARSE_FULL_RAW;
200 version = avio_r8(pb);
201 if (version != 3 && version != 4)
202 return AVERROR_INVALIDDATA;
203 num_streams = avio_r8(pb);
204 if (size != (32 + ((version==3)?0:8) + 4*num_streams))
205 return AVERROR_INVALIDDATA;
207 (*st)->codecpar->sample_rate = avio_rb32(pb);
211 (*st)->duration = avio_rb32(pb);
214 for (i = 0; i < num_streams; i++) {
215 channels += avio_r8(pb);
218 (*st)->codecpar->channels = channels;
220 if ((*st)->codecpar->channels <= 0 || (*st)->codecpar->sample_rate <= 0)
221 return AVERROR_INVALIDDATA;
223 avpriv_set_pts_info(*st, 64, 1, (*st)->codecpar->sample_rate);
225 avio_seek(pb, -size, SEEK_CUR);
226 if ((ret = ff_get_extradata(s, (*st)->codecpar, pb, size)) < 0)
232 static inline int wav_parse_bext_string(AVFormatContext *s, const char *key,
238 av_assert0(length < sizeof(temp));
239 if ((ret = avio_read(s->pb, temp, length)) != length)
240 return ret < 0 ? ret : AVERROR_INVALIDDATA;
245 return av_dict_set(&s->metadata, key, temp, 0);
250 static int wav_parse_bext_tag(AVFormatContext *s, int64_t size)
252 char temp[131], *coding_history;
254 uint64_t time_reference;
255 int64_t umid_parts[8], umid_mask = 0;
257 if ((ret = wav_parse_bext_string(s, "description", 256)) < 0 ||
258 (ret = wav_parse_bext_string(s, "originator", 32)) < 0 ||
259 (ret = wav_parse_bext_string(s, "originator_reference", 32)) < 0 ||
260 (ret = wav_parse_bext_string(s, "origination_date", 10)) < 0 ||
261 (ret = wav_parse_bext_string(s, "origination_time", 8)) < 0)
264 time_reference = avio_rl64(s->pb);
265 snprintf(temp, sizeof(temp), "%"PRIu64, time_reference);
266 if ((ret = av_dict_set(&s->metadata, "time_reference", temp, 0)) < 0)
269 /* check if version is >= 1, in which case an UMID may be present */
270 if (avio_rl16(s->pb) >= 1) {
271 for (x = 0; x < 8; x++)
272 umid_mask |= umid_parts[x] = avio_rb64(s->pb);
275 /* the string formatting below is per SMPTE 330M-2004 Annex C */
276 if (umid_parts[4] == 0 && umid_parts[5] == 0 &&
277 umid_parts[6] == 0 && umid_parts[7] == 0) {
279 snprintf(temp, sizeof(temp),
280 "0x%016"PRIX64"%016"PRIX64"%016"PRIX64"%016"PRIX64,
281 umid_parts[0], umid_parts[1],
282 umid_parts[2], umid_parts[3]);
285 snprintf(temp, sizeof(temp),
286 "0x%016"PRIX64"%016"PRIX64"%016"PRIX64"%016"PRIX64
287 "%016"PRIX64"%016"PRIX64"%016"PRIX64"%016"PRIX64,
288 umid_parts[0], umid_parts[1],
289 umid_parts[2], umid_parts[3],
290 umid_parts[4], umid_parts[5],
291 umid_parts[6], umid_parts[7]);
294 if ((ret = av_dict_set(&s->metadata, "umid", temp, 0)) < 0)
298 avio_skip(s->pb, 190);
300 avio_skip(s->pb, 254);
303 /* CodingHistory present */
306 if (!(coding_history = av_malloc(size + 1)))
307 return AVERROR(ENOMEM);
309 if ((ret = avio_read(s->pb, coding_history, size)) != size) {
310 av_free(coding_history);
311 return ret < 0 ? ret : AVERROR_INVALIDDATA;
314 coding_history[size] = 0;
315 if ((ret = av_dict_set(&s->metadata, "coding_history", coding_history,
316 AV_DICT_DONT_STRDUP_VAL)) < 0)
323 static const AVMetadataConv wav_metadata_conv[] = {
324 { "description", "comment" },
325 { "originator", "encoded_by" },
326 { "origination_date", "date" },
327 { "origination_time", "creation_time" },
332 static int wav_read_header(AVFormatContext *s)
334 int64_t size, av_uninit(data_size);
335 int64_t sample_count = 0;
336 int rf64 = 0, bw64 = 0;
338 AVIOContext *pb = s->pb;
340 WAVDemuxContext *wav = s->priv_data;
341 int ret, got_fmt = 0, got_xma2 = 0;
342 int64_t next_tag_ofs, data_ofs = -1;
344 wav->unaligned = avio_tell(s->pb) & 1;
346 wav->smv_data_ofs = -1;
351 case MKTAG('R', 'I', 'F', 'F'):
353 case MKTAG('R', 'I', 'F', 'X'):
356 case MKTAG('R', 'F', '6', '4'):
359 case MKTAG('B', 'W', '6', '4'):
363 av_log(s, AV_LOG_ERROR, "invalid start code %s in RIFF header\n",
365 return AVERROR_INVALIDDATA;
368 /* read chunk size */
372 if (avio_rl32(pb) != MKTAG('W', 'A', 'V', 'E')) {
373 av_log(s, AV_LOG_ERROR, "invalid format in RIFF header\n");
374 return AVERROR_INVALIDDATA;
378 if (avio_rl32(pb) != MKTAG('d', 's', '6', '4'))
379 return AVERROR_INVALIDDATA;
380 size = avio_rl32(pb);
382 return AVERROR_INVALIDDATA;
383 avio_rl64(pb); /* RIFF size */
385 data_size = avio_rl64(pb);
386 sample_count = avio_rl64(pb);
388 if (data_size < 0 || sample_count < 0) {
389 av_log(s, AV_LOG_ERROR, "negative data_size and/or sample_count in "
390 "ds64: data_size = %"PRId64", sample_count = %"PRId64"\n",
391 data_size, sample_count);
392 return AVERROR_INVALIDDATA;
394 avio_skip(pb, size - 24); /* skip rest of ds64 chunk */
400 size = next_tag(pb, &tag, wav->rifx);
401 next_tag_ofs = avio_tell(pb) + size;
407 case MKTAG('f', 'm', 't', ' '):
408 /* only parse the first 'fmt ' tag found */
409 if (!got_xma2 && !got_fmt && (ret = wav_parse_fmt_tag(s, size, &st)) < 0) {
412 av_log(s, AV_LOG_WARNING, "found more than one 'fmt ' tag\n");
416 case MKTAG('X', 'M', 'A', '2'):
417 /* only parse the first 'XMA2' tag found */
418 if (!got_fmt && !got_xma2 && (ret = wav_parse_xma2_tag(s, size, &st)) < 0) {
421 av_log(s, AV_LOG_WARNING, "found more than one 'XMA2' tag\n");
425 case MKTAG('d', 'a', 't', 'a'):
426 if (!(pb->seekable & AVIO_SEEKABLE_NORMAL) && !got_fmt && !got_xma2) {
427 av_log(s, AV_LOG_ERROR,
428 "found no 'fmt ' tag before the 'data' tag\n");
429 return AVERROR_INVALIDDATA;
433 next_tag_ofs = wav->data_end = avio_tell(pb) + data_size;
434 } else if (size != 0xFFFFFFFF) {
436 next_tag_ofs = wav->data_end = size ? next_tag_ofs : INT64_MAX;
438 av_log(s, AV_LOG_WARNING, "Ignoring maximum wav data size, "
439 "file may be invalid\n");
441 next_tag_ofs = wav->data_end = INT64_MAX;
444 data_ofs = avio_tell(pb);
446 /* don't look for footer metadata if we can't seek or if we don't
447 * know where the data tag ends
449 if (!(pb->seekable & AVIO_SEEKABLE_NORMAL) || (!(rf64 && !bw64) && !size))
452 case MKTAG('f', 'a', 'c', 't'):
454 sample_count = (!wav->rifx ? avio_rl32(pb) : avio_rb32(pb));
456 case MKTAG('b', 'e', 'x', 't'):
457 if ((ret = wav_parse_bext_tag(s, size)) < 0)
460 case MKTAG('S','M','V','0'):
462 av_log(s, AV_LOG_ERROR, "found no 'fmt ' tag before the 'SMV0' tag\n");
463 return AVERROR_INVALIDDATA;
465 // SMV file, a wav file with video appended.
466 if (size != MKTAG('0','2','0','0')) {
467 av_log(s, AV_LOG_ERROR, "Unknown SMV version found\n");
470 av_log(s, AV_LOG_DEBUG, "Found SMV data\n");
471 wav->smv_given_first = 0;
472 vst = avformat_new_stream(s, NULL);
474 return AVERROR(ENOMEM);
477 vst->codecpar->codec_type = AVMEDIA_TYPE_VIDEO;
478 vst->codecpar->codec_id = AV_CODEC_ID_SMVJPEG;
479 vst->codecpar->width = avio_rl24(pb);
480 vst->codecpar->height = avio_rl24(pb);
481 if ((ret = ff_alloc_extradata(vst->codecpar, 4)) < 0) {
482 av_log(s, AV_LOG_ERROR, "Could not allocate extradata.\n");
485 size = avio_rl24(pb);
486 wav->smv_data_ofs = avio_tell(pb) + (size - 5) * 3;
488 wav->smv_block_size = avio_rl24(pb);
489 avpriv_set_pts_info(vst, 32, 1, avio_rl24(pb));
490 vst->duration = avio_rl24(pb);
493 wav->smv_frames_per_jpeg = avio_rl24(pb);
494 if (wav->smv_frames_per_jpeg > 65536) {
495 av_log(s, AV_LOG_ERROR, "too many frames per jpeg\n");
496 return AVERROR_INVALIDDATA;
498 AV_WL32(vst->codecpar->extradata, wav->smv_frames_per_jpeg);
500 case MKTAG('L', 'I', 'S', 'T'):
501 case MKTAG('l', 'i', 's', 't'):
503 av_log(s, AV_LOG_ERROR, "too short LIST tag\n");
504 return AVERROR_INVALIDDATA;
506 switch (avio_rl32(pb)) {
507 case MKTAG('I', 'N', 'F', 'O'):
508 ff_read_riff_info(s, size - 4);
510 case MKTAG('a', 'd', 't', 'l'):
511 if (s->nb_chapters > 0) {
512 while (avio_tell(pb) < next_tag_ofs &&
515 unsigned id, sub_size;
517 if (avio_rl32(pb) != MKTAG('l', 'a', 'b', 'l'))
520 sub_size = avio_rl32(pb);
524 avio_get_str(pb, sub_size - 4, cue_label, sizeof(cue_label));
525 avio_skip(pb, avio_tell(pb) & 1);
527 for (int i = 0; i < s->nb_chapters; i++) {
528 if (s->chapters[i]->id == id) {
529 av_dict_set(&s->chapters[i]->metadata, "title", cue_label, 0);
538 case MKTAG('I', 'D', '3', ' '):
539 case MKTAG('i', 'd', '3', ' '): {
540 ID3v2ExtraMeta *id3v2_extra_meta = NULL;
541 ff_id3v2_read_dict(pb, &s->internal->id3v2_meta, ID3v2_DEFAULT_MAGIC, &id3v2_extra_meta);
542 if (id3v2_extra_meta) {
543 ff_id3v2_parse_apic(s, id3v2_extra_meta);
544 ff_id3v2_parse_chapters(s, id3v2_extra_meta);
545 ff_id3v2_parse_priv(s, id3v2_extra_meta);
547 ff_id3v2_free_extra_meta(&id3v2_extra_meta);
550 case MKTAG('c', 'u', 'e', ' '):
551 if (size >= 4 && got_fmt && st->codecpar->sample_rate > 0) {
552 AVRational tb = {1, st->codecpar->sample_rate};
553 unsigned nb_cues = avio_rl32(pb);
555 if (size >= nb_cues * 24LL + 4LL) {
556 for (int i = 0; i < nb_cues; i++) {
557 unsigned offset, id = avio_rl32(pb);
560 return AVERROR_INVALIDDATA;
563 offset = avio_rl32(pb);
565 if (!avpriv_new_chapter(s, id, tb, offset, AV_NOPTS_VALUE, NULL))
566 return AVERROR(ENOMEM);
573 /* seek to next tag unless we know that we'll run into EOF */
574 if ((avio_size(pb) > 0 && next_tag_ofs >= avio_size(pb)) ||
575 wav_seek_tag(wav, pb, next_tag_ofs, SEEK_SET) < 0) {
581 if (!got_fmt && !got_xma2) {
582 av_log(s, AV_LOG_ERROR, "no 'fmt ' or 'XMA2' tag found\n");
583 return AVERROR_INVALIDDATA;
587 av_log(s, AV_LOG_ERROR, "no 'data' tag found\n");
588 return AVERROR_INVALIDDATA;
591 avio_seek(pb, data_ofs, SEEK_SET);
593 if (data_size > (INT64_MAX>>3)) {
594 av_log(s, AV_LOG_WARNING, "Data size %"PRId64" is too large\n", data_size);
598 if ( st->codecpar->bit_rate > 0 && data_size > 0
599 && st->codecpar->sample_rate > 0
600 && sample_count > 0 && st->codecpar->channels > 1
601 && sample_count % st->codecpar->channels == 0) {
602 if (fabs(8.0 * data_size * st->codecpar->channels * st->codecpar->sample_rate /
603 sample_count /st->codecpar->bit_rate - 1.0) < 0.3)
604 sample_count /= st->codecpar->channels;
607 if ( data_size > 0 && sample_count && st->codecpar->channels
608 && (data_size << 3) / sample_count / st->codecpar->channels > st->codecpar->bits_per_coded_sample + 1) {
609 av_log(s, AV_LOG_WARNING, "ignoring wrong sample_count %"PRId64"\n", sample_count);
613 /* G.729 hack (for Ticket4577)
614 * FIXME: Come up with cleaner, more general solution */
615 if (st->codecpar->codec_id == AV_CODEC_ID_G729 && sample_count && (data_size << 3) > sample_count) {
616 av_log(s, AV_LOG_WARNING, "ignoring wrong sample_count %"PRId64"\n", sample_count);
620 if (!sample_count || av_get_exact_bits_per_sample(st->codecpar->codec_id) > 0)
621 if ( st->codecpar->channels
623 && av_get_bits_per_sample(st->codecpar->codec_id)
624 && wav->data_end <= avio_size(pb))
625 sample_count = (data_size << 3)
627 (st->codecpar->channels * (uint64_t)av_get_bits_per_sample(st->codecpar->codec_id));
630 st->duration = sample_count;
632 if (st->codecpar->codec_id == AV_CODEC_ID_PCM_S32LE &&
633 st->codecpar->block_align == st->codecpar->channels * 4 &&
634 st->codecpar->bits_per_coded_sample == 32 &&
635 st->codecpar->extradata_size == 2 &&
636 AV_RL16(st->codecpar->extradata) == 1) {
637 st->codecpar->codec_id = AV_CODEC_ID_PCM_F16LE;
638 st->codecpar->bits_per_coded_sample = 16;
639 } else if (st->codecpar->codec_id == AV_CODEC_ID_PCM_S24LE &&
640 st->codecpar->block_align == st->codecpar->channels * 4 &&
641 st->codecpar->bits_per_coded_sample == 24) {
642 st->codecpar->codec_id = AV_CODEC_ID_PCM_F24LE;
643 } else if (st->codecpar->codec_id == AV_CODEC_ID_XMA1 ||
644 st->codecpar->codec_id == AV_CODEC_ID_XMA2) {
645 st->codecpar->block_align = 2048;
646 } else if (st->codecpar->codec_id == AV_CODEC_ID_ADPCM_MS && st->codecpar->channels > 2) {
647 st->codecpar->block_align *= st->codecpar->channels;
650 ff_metadata_conv_ctx(s, NULL, wav_metadata_conv);
651 ff_metadata_conv_ctx(s, NULL, ff_riff_info_conv);
659 * Find chunk with w64 GUID by skipping over other chunks.
660 * @return the size of the found chunk
662 static int64_t find_guid(AVIOContext *pb, const uint8_t guid1[16])
667 while (!avio_feof(pb)) {
668 avio_read(pb, guid, 16);
669 size = avio_rl64(pb);
670 if (size <= 24 || size > INT64_MAX - 8)
671 return AVERROR_INVALIDDATA;
672 if (!memcmp(guid, guid1, 16))
674 avio_skip(pb, FFALIGN(size, INT64_C(8)) - 24);
679 static int wav_read_packet(AVFormatContext *s, AVPacket *pkt)
684 WAVDemuxContext *wav = s->priv_data;
686 if (CONFIG_SPDIF_DEMUXER && wav->spdif == 1)
687 return ff_spdif_read_packet(s, pkt);
689 if (wav->smv_data_ofs > 0) {
690 int64_t audio_dts, video_dts;
692 audio_dts = (int32_t)s->streams[0]->cur_dts;
693 video_dts = (int32_t)s->streams[1]->cur_dts;
695 if (audio_dts != AV_NOPTS_VALUE && video_dts != AV_NOPTS_VALUE) {
696 /*We always return a video frame first to get the pixel format first*/
697 wav->smv_last_stream = wav->smv_given_first ?
698 av_compare_ts(video_dts, s->streams[1]->time_base,
699 audio_dts, s->streams[0]->time_base) > 0 : 0;
700 wav->smv_given_first = 1;
702 wav->smv_last_stream = !wav->smv_last_stream;
703 wav->smv_last_stream |= wav->audio_eof;
704 wav->smv_last_stream &= !wav->smv_eof;
705 if (wav->smv_last_stream) {
706 uint64_t old_pos = avio_tell(s->pb);
707 uint64_t new_pos = wav->smv_data_ofs +
708 wav->smv_block * wav->smv_block_size;
709 if (avio_seek(s->pb, new_pos, SEEK_SET) < 0) {
713 size = avio_rl24(s->pb);
714 ret = av_get_packet(s->pb, pkt, size);
718 pkt->pts = wav->smv_block * wav->smv_frames_per_jpeg;
719 pkt->duration = wav->smv_frames_per_jpeg;
722 pkt->stream_index = 1;
724 avio_seek(s->pb, old_pos, SEEK_SET);
725 if (ret == AVERROR_EOF) {
735 left = wav->data_end - avio_tell(s->pb);
736 if (wav->ignore_length)
739 if (CONFIG_W64_DEMUXER && wav->w64)
740 left = find_guid(s->pb, ff_w64_guid_data) - 24;
742 left = find_tag(wav, s->pb, MKTAG('d', 'a', 't', 'a'));
745 if (wav->smv_data_ofs > 0 && !wav->smv_eof)
749 wav->data_end = avio_tell(s->pb) + left;
752 size = wav->max_size;
753 if (st->codecpar->block_align > 1) {
754 if (size < st->codecpar->block_align)
755 size = st->codecpar->block_align;
756 size = (size / st->codecpar->block_align) * st->codecpar->block_align;
758 size = FFMIN(size, left);
759 ret = av_get_packet(s->pb, pkt, size);
762 pkt->stream_index = 0;
767 static int wav_read_seek(AVFormatContext *s,
768 int stream_index, int64_t timestamp, int flags)
770 WAVDemuxContext *wav = s->priv_data;
774 if (wav->smv_data_ofs > 0) {
775 int64_t smv_timestamp = timestamp;
776 if (stream_index == 0)
777 smv_timestamp = av_rescale_q(timestamp, s->streams[0]->time_base, s->streams[1]->time_base);
779 timestamp = av_rescale_q(smv_timestamp, s->streams[1]->time_base, s->streams[0]->time_base);
780 if (wav->smv_frames_per_jpeg > 0) {
781 wav->smv_block = smv_timestamp / wav->smv_frames_per_jpeg;
786 switch (st->codecpar->codec_id) {
787 case AV_CODEC_ID_MP2:
788 case AV_CODEC_ID_MP3:
789 case AV_CODEC_ID_AC3:
790 case AV_CODEC_ID_DTS:
791 case AV_CODEC_ID_XMA2:
792 /* use generic seeking with dynamically generated indexes */
797 return ff_pcm_read_seek(s, stream_index, timestamp, flags);
800 #define OFFSET(x) offsetof(WAVDemuxContext, x)
801 #define DEC AV_OPT_FLAG_DECODING_PARAM
802 static const AVOption demux_options[] = {
803 { "ignore_length", "Ignore length", OFFSET(ignore_length), AV_OPT_TYPE_BOOL, { .i64 = 0 }, 0, 1, DEC },
804 { "max_size", "max size of single packet", OFFSET(max_size), AV_OPT_TYPE_INT, { .i64 = 4096 }, 1024, 1 << 22, DEC },
808 static const AVClass wav_demuxer_class = {
809 .class_name = "WAV demuxer",
810 .item_name = av_default_item_name,
811 .option = demux_options,
812 .version = LIBAVUTIL_VERSION_INT,
814 AVInputFormat ff_wav_demuxer = {
816 .long_name = NULL_IF_CONFIG_SMALL("WAV / WAVE (Waveform Audio)"),
817 .priv_data_size = sizeof(WAVDemuxContext),
818 .read_probe = wav_probe,
819 .read_header = wav_read_header,
820 .read_packet = wav_read_packet,
821 .read_seek = wav_read_seek,
822 .flags = AVFMT_GENERIC_INDEX,
823 .codec_tag = (const AVCodecTag * const []) { ff_codec_wav_tags, 0 },
824 .priv_class = &wav_demuxer_class,
826 #endif /* CONFIG_WAV_DEMUXER */
828 #if CONFIG_W64_DEMUXER
829 static int w64_probe(const AVProbeData *p)
831 if (p->buf_size <= 40)
833 if (!memcmp(p->buf, ff_w64_guid_riff, 16) &&
834 !memcmp(p->buf + 24, ff_w64_guid_wave, 16))
835 return AVPROBE_SCORE_MAX;
840 static int w64_read_header(AVFormatContext *s)
842 int64_t size, data_ofs = 0;
843 AVIOContext *pb = s->pb;
844 WAVDemuxContext *wav = s->priv_data;
849 avio_read(pb, guid, 16);
850 if (memcmp(guid, ff_w64_guid_riff, 16))
851 return AVERROR_INVALIDDATA;
853 /* riff + wave + fmt + sizes */
854 if (avio_rl64(pb) < 16 + 8 + 16 + 8 + 16 + 8)
855 return AVERROR_INVALIDDATA;
857 avio_read(pb, guid, 16);
858 if (memcmp(guid, ff_w64_guid_wave, 16)) {
859 av_log(s, AV_LOG_ERROR, "could not find wave guid\n");
860 return AVERROR_INVALIDDATA;
865 st = avformat_new_stream(s, NULL);
867 return AVERROR(ENOMEM);
869 while (!avio_feof(pb)) {
870 if (avio_read(pb, guid, 16) != 16)
872 size = avio_rl64(pb);
873 if (size <= 24 || INT64_MAX - size < avio_tell(pb))
874 return AVERROR_INVALIDDATA;
876 if (!memcmp(guid, ff_w64_guid_fmt, 16)) {
877 /* subtract chunk header size - normal wav file doesn't count it */
878 ret = ff_get_wav_header(s, pb, st->codecpar, size - 24, 0);
881 avio_skip(pb, FFALIGN(size, INT64_C(8)) - size);
883 avpriv_set_pts_info(st, 64, 1, st->codecpar->sample_rate);
884 } else if (!memcmp(guid, ff_w64_guid_fact, 16)) {
887 samples = avio_rl64(pb);
889 st->duration = samples;
890 avio_skip(pb, FFALIGN(size, INT64_C(8)) - 32);
891 } else if (!memcmp(guid, ff_w64_guid_data, 16)) {
892 wav->data_end = avio_tell(pb) + size - 24;
894 data_ofs = avio_tell(pb);
895 if (!(pb->seekable & AVIO_SEEKABLE_NORMAL))
898 avio_skip(pb, size - 24);
899 } else if (!memcmp(guid, ff_w64_guid_summarylist, 16)) {
900 int64_t start, end, cur;
901 uint32_t count, chunk_size, i;
902 int64_t filesize = avio_size(s->pb);
904 start = avio_tell(pb);
905 end = start + FFALIGN(size, INT64_C(8)) - 24;
906 count = avio_rl32(pb);
908 for (i = 0; i < count; i++) {
909 char chunk_key[5], *value;
911 if (avio_feof(pb) || (cur = avio_tell(pb)) < 0 || cur > end - 8 /* = tag + size */)
915 avio_read(pb, chunk_key, 4);
916 chunk_size = avio_rl32(pb);
917 if (chunk_size == UINT32_MAX || (filesize >= 0 && chunk_size > filesize))
918 return AVERROR_INVALIDDATA;
920 value = av_malloc(chunk_size + 1);
922 return AVERROR(ENOMEM);
924 ret = avio_get_str16le(pb, chunk_size, value, chunk_size);
929 avio_skip(pb, chunk_size - ret);
931 av_dict_set(&s->metadata, chunk_key, value, AV_DICT_DONT_STRDUP_VAL);
934 avio_skip(pb, end - avio_tell(pb));
936 av_log(s, AV_LOG_DEBUG, "unknown guid: "FF_PRI_GUID"\n", FF_ARG_GUID(guid));
937 avio_skip(pb, FFALIGN(size, INT64_C(8)) - 24);
944 ff_metadata_conv_ctx(s, NULL, wav_metadata_conv);
945 ff_metadata_conv_ctx(s, NULL, ff_riff_info_conv);
947 handle_stream_probing(st);
948 st->need_parsing = AVSTREAM_PARSE_FULL_RAW;
950 avio_seek(pb, data_ofs, SEEK_SET);
957 #define OFFSET(x) offsetof(WAVDemuxContext, x)
958 #define DEC AV_OPT_FLAG_DECODING_PARAM
959 static const AVOption w64_demux_options[] = {
960 { "max_size", "max size of single packet", OFFSET(max_size), AV_OPT_TYPE_INT, { .i64 = 4096 }, 1024, 1 << 22, DEC },
964 static const AVClass w64_demuxer_class = {
965 .class_name = "W64 demuxer",
966 .item_name = av_default_item_name,
967 .option = w64_demux_options,
968 .version = LIBAVUTIL_VERSION_INT,
971 AVInputFormat ff_w64_demuxer = {
973 .long_name = NULL_IF_CONFIG_SMALL("Sony Wave64"),
974 .priv_data_size = sizeof(WAVDemuxContext),
975 .read_probe = w64_probe,
976 .read_header = w64_read_header,
977 .read_packet = wav_read_packet,
978 .read_seek = wav_read_seek,
979 .flags = AVFMT_GENERIC_INDEX,
980 .codec_tag = (const AVCodecTag * const []) { ff_codec_wav_tags, 0 },
981 .priv_class = &w64_demuxer_class,
983 #endif /* CONFIG_W64_DEMUXER */