3 * Copyright (c) 2001, 2002 Fabrice Bellard
7 * Copyright (c) 2009 Daniel Verkamp
9 * This file is part of FFmpeg.
11 * FFmpeg is free software; you can redistribute it and/or
12 * modify it under the terms of the GNU Lesser General Public
13 * License as published by the Free Software Foundation; either
14 * version 2.1 of the License, or (at your option) any later version.
16 * FFmpeg is distributed in the hope that it will be useful,
17 * but WITHOUT ANY WARRANTY; without even the implied warranty of
18 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
19 * Lesser General Public License for more details.
21 * You should have received a copy of the GNU Lesser General Public
22 * License along with FFmpeg; if not, write to the Free Software
23 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
28 #include "libavutil/avassert.h"
29 #include "libavutil/dict.h"
30 #include "libavutil/intreadwrite.h"
31 #include "libavutil/log.h"
32 #include "libavutil/mathematics.h"
33 #include "libavutil/opt.h"
36 #include "avio_internal.h"
44 typedef struct WAVDemuxContext {
50 int smv_frames_per_jpeg;
59 int unaligned; // e.g. if an odd number of bytes ID3 tag was prepended
60 int rifx; // RIFX: integer byte order for parameters is big endian
63 static void set_spdif(AVFormatContext *s, WAVDemuxContext *wav)
65 if (CONFIG_SPDIF_DEMUXER && s->streams[0]->codecpar->codec_tag == 1) {
68 int ret = ffio_ensure_seekback(s->pb, len);
71 uint8_t *buf = av_malloc(len);
73 ret = AVERROR(ENOMEM);
75 int64_t pos = avio_tell(s->pb);
76 len = ret = avio_read(s->pb, buf, len);
78 ret = ff_spdif_probe(buf, len, &codec);
79 if (ret > AVPROBE_SCORE_EXTENSION) {
80 s->streams[0]->codecpar->codec_id = codec;
84 avio_seek(s->pb, pos, SEEK_SET);
90 av_log(s, AV_LOG_WARNING, "Cannot check for SPDIF\n");
94 #if CONFIG_WAV_DEMUXER
96 static int64_t next_tag(AVIOContext *pb, uint32_t *tag, int big_endian)
100 return avio_rl32(pb);
102 return avio_rb32(pb);
106 /* RIFF chunks are always at even offsets relative to where they start. */
107 static int64_t wav_seek_tag(WAVDemuxContext * wav, AVIOContext *s, int64_t offset, int whence)
109 offset += offset < INT64_MAX && offset + wav->unaligned & 1;
111 return avio_seek(s, offset, whence);
114 /* return the size of the found tag */
115 static int64_t find_tag(WAVDemuxContext * wav, AVIOContext *pb, uint32_t tag1)
123 size = next_tag(pb, &tag, wav->rifx);
126 wav_seek_tag(wav, pb, size, SEEK_CUR);
131 static int wav_probe(AVProbeData *p)
133 /* check file header */
134 if (p->buf_size <= 32)
136 if (!memcmp(p->buf + 8, "WAVE", 4)) {
137 if (!memcmp(p->buf, "RIFF", 4) || !memcmp(p->buf, "RIFX", 4))
138 /* Since the ACT demuxer has a standard WAV header at the top of
139 * its own, the returned score is decreased to avoid a probe
140 * conflict between ACT and WAV. */
141 return AVPROBE_SCORE_MAX - 1;
142 else if (!memcmp(p->buf, "RF64", 4) &&
143 !memcmp(p->buf + 12, "ds64", 4))
144 return AVPROBE_SCORE_MAX;
149 static void handle_stream_probing(AVStream *st)
151 if (st->codecpar->codec_id == AV_CODEC_ID_PCM_S16LE) {
152 st->request_probe = AVPROBE_SCORE_EXTENSION;
153 st->probe_packets = FFMIN(st->probe_packets, 32);
157 static int wav_parse_fmt_tag(AVFormatContext *s, int64_t size, AVStream **st)
159 AVIOContext *pb = s->pb;
160 WAVDemuxContext *wav = s->priv_data;
163 /* parse fmt header */
164 *st = avformat_new_stream(s, NULL);
166 return AVERROR(ENOMEM);
168 ret = ff_get_wav_header(s, pb, (*st)->codecpar, size, wav->rifx);
171 handle_stream_probing(*st);
173 (*st)->need_parsing = AVSTREAM_PARSE_FULL_RAW;
175 avpriv_set_pts_info(*st, 64, 1, (*st)->codecpar->sample_rate);
180 static int wav_parse_xma2_tag(AVFormatContext *s, int64_t size, AVStream **st)
182 AVIOContext *pb = s->pb;
183 int version, num_streams, i, channels = 0;
186 return AVERROR_INVALIDDATA;
188 *st = avformat_new_stream(s, NULL);
190 return AVERROR(ENOMEM);
192 (*st)->codecpar->codec_type = AVMEDIA_TYPE_AUDIO;
193 (*st)->codecpar->codec_id = AV_CODEC_ID_XMA2;
194 (*st)->need_parsing = AVSTREAM_PARSE_FULL_RAW;
196 version = avio_r8(pb);
197 if (version != 3 && version != 4)
198 return AVERROR_INVALIDDATA;
199 num_streams = avio_r8(pb);
200 if (size != (32 + ((version==3)?0:8) + 4*num_streams))
201 return AVERROR_INVALIDDATA;
203 (*st)->codecpar->sample_rate = avio_rb32(pb);
207 (*st)->duration = avio_rb32(pb);
210 for (i = 0; i < num_streams; i++) {
211 channels += avio_r8(pb);
214 (*st)->codecpar->channels = channels;
216 if ((*st)->codecpar->channels <= 0 || (*st)->codecpar->sample_rate <= 0)
217 return AVERROR_INVALIDDATA;
219 avpriv_set_pts_info(*st, 64, 1, (*st)->codecpar->sample_rate);
221 avio_seek(pb, -size, SEEK_CUR);
222 av_freep(&(*st)->codecpar->extradata);
223 if (ff_get_extradata(s, (*st)->codecpar, pb, size) < 0)
224 return AVERROR(ENOMEM);
229 static inline int wav_parse_bext_string(AVFormatContext *s, const char *key,
235 av_assert0(length <= sizeof(temp));
236 if ((ret = avio_read(s->pb, temp, length)) < 0)
242 return av_dict_set(&s->metadata, key, temp, 0);
247 static int wav_parse_bext_tag(AVFormatContext *s, int64_t size)
249 char temp[131], *coding_history;
251 uint64_t time_reference;
252 int64_t umid_parts[8], umid_mask = 0;
254 if ((ret = wav_parse_bext_string(s, "description", 256)) < 0 ||
255 (ret = wav_parse_bext_string(s, "originator", 32)) < 0 ||
256 (ret = wav_parse_bext_string(s, "originator_reference", 32)) < 0 ||
257 (ret = wav_parse_bext_string(s, "origination_date", 10)) < 0 ||
258 (ret = wav_parse_bext_string(s, "origination_time", 8)) < 0)
261 time_reference = avio_rl64(s->pb);
262 snprintf(temp, sizeof(temp), "%"PRIu64, time_reference);
263 if ((ret = av_dict_set(&s->metadata, "time_reference", temp, 0)) < 0)
266 /* check if version is >= 1, in which case an UMID may be present */
267 if (avio_rl16(s->pb) >= 1) {
268 for (x = 0; x < 8; x++)
269 umid_mask |= umid_parts[x] = avio_rb64(s->pb);
272 /* the string formatting below is per SMPTE 330M-2004 Annex C */
273 if (umid_parts[4] == 0 && umid_parts[5] == 0 &&
274 umid_parts[6] == 0 && umid_parts[7] == 0) {
276 snprintf(temp, sizeof(temp),
277 "0x%016"PRIX64"%016"PRIX64"%016"PRIX64"%016"PRIX64,
278 umid_parts[0], umid_parts[1],
279 umid_parts[2], umid_parts[3]);
282 snprintf(temp, sizeof(temp),
283 "0x%016"PRIX64"%016"PRIX64"%016"PRIX64"%016"PRIX64
284 "%016"PRIX64"%016"PRIX64"%016"PRIX64"%016"PRIX64,
285 umid_parts[0], umid_parts[1],
286 umid_parts[2], umid_parts[3],
287 umid_parts[4], umid_parts[5],
288 umid_parts[6], umid_parts[7]);
291 if ((ret = av_dict_set(&s->metadata, "umid", temp, 0)) < 0)
295 avio_skip(s->pb, 190);
297 avio_skip(s->pb, 254);
300 /* CodingHistory present */
303 if (!(coding_history = av_malloc(size + 1)))
304 return AVERROR(ENOMEM);
306 if ((ret = avio_read(s->pb, coding_history, size)) < 0)
309 coding_history[size] = 0;
310 if ((ret = av_dict_set(&s->metadata, "coding_history", coding_history,
311 AV_DICT_DONT_STRDUP_VAL)) < 0)
318 static const AVMetadataConv wav_metadata_conv[] = {
319 { "description", "comment" },
320 { "originator", "encoded_by" },
321 { "origination_date", "date" },
322 { "origination_time", "creation_time" },
327 static int wav_read_header(AVFormatContext *s)
329 int64_t size, av_uninit(data_size);
330 int64_t sample_count = 0;
333 AVIOContext *pb = s->pb;
335 WAVDemuxContext *wav = s->priv_data;
336 int ret, got_fmt = 0, got_xma2 = 0;
337 int64_t next_tag_ofs, data_ofs = -1;
339 wav->unaligned = avio_tell(s->pb) & 1;
341 wav->smv_data_ofs = -1;
346 case MKTAG('R', 'I', 'F', 'F'):
348 case MKTAG('R', 'I', 'F', 'X'):
351 case MKTAG('R', 'F', '6', '4'):
355 av_log(s, AV_LOG_ERROR, "invalid start code %s in RIFF header\n",
357 return AVERROR_INVALIDDATA;
360 /* read chunk size */
364 if (avio_rl32(pb) != MKTAG('W', 'A', 'V', 'E')) {
365 av_log(s, AV_LOG_ERROR, "invalid format in RIFF header\n");
366 return AVERROR_INVALIDDATA;
370 if (avio_rl32(pb) != MKTAG('d', 's', '6', '4'))
371 return AVERROR_INVALIDDATA;
372 size = avio_rl32(pb);
374 return AVERROR_INVALIDDATA;
375 avio_rl64(pb); /* RIFF size */
377 data_size = avio_rl64(pb);
378 sample_count = avio_rl64(pb);
380 if (data_size < 0 || sample_count < 0) {
381 av_log(s, AV_LOG_ERROR, "negative data_size and/or sample_count in "
382 "ds64: data_size = %"PRId64", sample_count = %"PRId64"\n",
383 data_size, sample_count);
384 return AVERROR_INVALIDDATA;
386 avio_skip(pb, size - 24); /* skip rest of ds64 chunk */
392 size = next_tag(pb, &tag, wav->rifx);
393 next_tag_ofs = avio_tell(pb) + size;
399 case MKTAG('f', 'm', 't', ' '):
400 /* only parse the first 'fmt ' tag found */
401 if (!got_xma2 && !got_fmt && (ret = wav_parse_fmt_tag(s, size, &st)) < 0) {
404 av_log(s, AV_LOG_WARNING, "found more than one 'fmt ' tag\n");
408 case MKTAG('X', 'M', 'A', '2'):
409 /* only parse the first 'XMA2' tag found */
410 if (!got_fmt && !got_xma2 && (ret = wav_parse_xma2_tag(s, size, &st)) < 0) {
413 av_log(s, AV_LOG_WARNING, "found more than one 'XMA2' tag\n");
417 case MKTAG('d', 'a', 't', 'a'):
418 if (!(pb->seekable & AVIO_SEEKABLE_NORMAL) && !got_fmt && !got_xma2) {
419 av_log(s, AV_LOG_ERROR,
420 "found no 'fmt ' tag before the 'data' tag\n");
421 return AVERROR_INVALIDDATA;
425 next_tag_ofs = wav->data_end = avio_tell(pb) + data_size;
426 } else if (size != 0xFFFFFFFF) {
428 next_tag_ofs = wav->data_end = size ? next_tag_ofs : INT64_MAX;
430 av_log(s, AV_LOG_WARNING, "Ignoring maximum wav data size, "
431 "file may be invalid\n");
433 next_tag_ofs = wav->data_end = INT64_MAX;
436 data_ofs = avio_tell(pb);
438 /* don't look for footer metadata if we can't seek or if we don't
439 * know where the data tag ends
441 if (!(pb->seekable & AVIO_SEEKABLE_NORMAL) || (!rf64 && !size))
444 case MKTAG('f', 'a', 'c', 't'):
446 sample_count = (!wav->rifx ? avio_rl32(pb) : avio_rb32(pb));
448 case MKTAG('b', 'e', 'x', 't'):
449 if ((ret = wav_parse_bext_tag(s, size)) < 0)
452 case MKTAG('S','M','V','0'):
454 av_log(s, AV_LOG_ERROR, "found no 'fmt ' tag before the 'SMV0' tag\n");
455 return AVERROR_INVALIDDATA;
457 // SMV file, a wav file with video appended.
458 if (size != MKTAG('0','2','0','0')) {
459 av_log(s, AV_LOG_ERROR, "Unknown SMV version found\n");
462 av_log(s, AV_LOG_DEBUG, "Found SMV data\n");
463 wav->smv_given_first = 0;
464 vst = avformat_new_stream(s, NULL);
466 return AVERROR(ENOMEM);
469 vst->codecpar->codec_type = AVMEDIA_TYPE_VIDEO;
470 vst->codecpar->codec_id = AV_CODEC_ID_SMVJPEG;
471 vst->codecpar->width = avio_rl24(pb);
472 vst->codecpar->height = avio_rl24(pb);
473 if (ff_alloc_extradata(vst->codecpar, 4)) {
474 av_log(s, AV_LOG_ERROR, "Could not allocate extradata.\n");
475 return AVERROR(ENOMEM);
477 size = avio_rl24(pb);
478 wav->smv_data_ofs = avio_tell(pb) + (size - 5) * 3;
480 wav->smv_block_size = avio_rl24(pb);
481 avpriv_set_pts_info(vst, 32, 1, avio_rl24(pb));
482 vst->duration = avio_rl24(pb);
485 wav->smv_frames_per_jpeg = avio_rl24(pb);
486 if (wav->smv_frames_per_jpeg > 65536) {
487 av_log(s, AV_LOG_ERROR, "too many frames per jpeg\n");
488 return AVERROR_INVALIDDATA;
490 AV_WL32(vst->codecpar->extradata, wav->smv_frames_per_jpeg);
493 case MKTAG('L', 'I', 'S', 'T'):
495 av_log(s, AV_LOG_ERROR, "too short LIST tag\n");
496 return AVERROR_INVALIDDATA;
498 switch (avio_rl32(pb)) {
499 case MKTAG('I', 'N', 'F', 'O'):
500 ff_read_riff_info(s, size - 4);
505 /* seek to next tag unless we know that we'll run into EOF */
506 if ((avio_size(pb) > 0 && next_tag_ofs >= avio_size(pb)) ||
507 wav_seek_tag(wav, pb, next_tag_ofs, SEEK_SET) < 0) {
513 if (!got_fmt && !got_xma2) {
514 av_log(s, AV_LOG_ERROR, "no 'fmt ' or 'XMA2' tag found\n");
515 return AVERROR_INVALIDDATA;
519 av_log(s, AV_LOG_ERROR, "no 'data' tag found\n");
520 return AVERROR_INVALIDDATA;
523 avio_seek(pb, data_ofs, SEEK_SET);
525 if (data_size > (INT64_MAX>>3)) {
526 av_log(s, AV_LOG_WARNING, "Data size %"PRId64" is too large\n", data_size);
530 if ( st->codecpar->bit_rate > 0 && data_size > 0
531 && st->codecpar->sample_rate > 0
532 && sample_count > 0 && st->codecpar->channels > 1
533 && sample_count % st->codecpar->channels == 0) {
534 if (fabs(8.0 * data_size * st->codecpar->channels * st->codecpar->sample_rate /
535 sample_count /st->codecpar->bit_rate - 1.0) < 0.3)
536 sample_count /= st->codecpar->channels;
539 if ( data_size > 0 && sample_count && st->codecpar->channels
540 && (data_size << 3) / sample_count / st->codecpar->channels > st->codecpar->bits_per_coded_sample + 1) {
541 av_log(s, AV_LOG_WARNING, "ignoring wrong sample_count %"PRId64"\n", sample_count);
545 /* G.729 hack (for Ticket4577)
546 * FIXME: Come up with cleaner, more general solution */
547 if (st->codecpar->codec_id == AV_CODEC_ID_G729 && sample_count && (data_size << 3) > sample_count) {
548 av_log(s, AV_LOG_WARNING, "ignoring wrong sample_count %"PRId64"\n", sample_count);
552 if (!sample_count || av_get_exact_bits_per_sample(st->codecpar->codec_id) > 0)
553 if ( st->codecpar->channels
555 && av_get_bits_per_sample(st->codecpar->codec_id)
556 && wav->data_end <= avio_size(pb))
557 sample_count = (data_size << 3)
559 (st->codecpar->channels * (uint64_t)av_get_bits_per_sample(st->codecpar->codec_id));
562 st->duration = sample_count;
564 if (st->codecpar->codec_id == AV_CODEC_ID_PCM_S32LE &&
565 st->codecpar->block_align == st->codecpar->channels * 4 &&
566 st->codecpar->bits_per_coded_sample == 32 &&
567 st->codecpar->extradata_size == 2 &&
568 AV_RL16(st->codecpar->extradata) == 1) {
569 st->codecpar->codec_id = AV_CODEC_ID_PCM_F16LE;
570 st->codecpar->bits_per_coded_sample = 16;
571 } else if (st->codecpar->codec_id == AV_CODEC_ID_PCM_S24LE &&
572 st->codecpar->block_align == st->codecpar->channels * 4 &&
573 st->codecpar->bits_per_coded_sample == 24) {
574 st->codecpar->codec_id = AV_CODEC_ID_PCM_F24LE;
575 } else if (st->codecpar->codec_id == AV_CODEC_ID_XMA1 ||
576 st->codecpar->codec_id == AV_CODEC_ID_XMA2) {
577 st->codecpar->block_align = 2048;
580 ff_metadata_conv_ctx(s, NULL, wav_metadata_conv);
581 ff_metadata_conv_ctx(s, NULL, ff_riff_info_conv);
589 * Find chunk with w64 GUID by skipping over other chunks.
590 * @return the size of the found chunk
592 static int64_t find_guid(AVIOContext *pb, const uint8_t guid1[16])
597 while (!avio_feof(pb)) {
598 avio_read(pb, guid, 16);
599 size = avio_rl64(pb);
601 return AVERROR_INVALIDDATA;
602 if (!memcmp(guid, guid1, 16))
604 avio_skip(pb, FFALIGN(size, INT64_C(8)) - 24);
609 #define MAX_SIZE 4096
611 static int wav_read_packet(AVFormatContext *s, AVPacket *pkt)
616 WAVDemuxContext *wav = s->priv_data;
618 if (CONFIG_SPDIF_DEMUXER && wav->spdif == 1)
619 return ff_spdif_read_packet(s, pkt);
621 if (wav->smv_data_ofs > 0) {
622 int64_t audio_dts, video_dts;
624 audio_dts = (int32_t)s->streams[0]->cur_dts;
625 video_dts = (int32_t)s->streams[1]->cur_dts;
627 if (audio_dts != AV_NOPTS_VALUE && video_dts != AV_NOPTS_VALUE) {
628 /*We always return a video frame first to get the pixel format first*/
629 wav->smv_last_stream = wav->smv_given_first ?
630 av_compare_ts(video_dts, s->streams[1]->time_base,
631 audio_dts, s->streams[0]->time_base) > 0 : 0;
632 wav->smv_given_first = 1;
634 wav->smv_last_stream = !wav->smv_last_stream;
635 wav->smv_last_stream |= wav->audio_eof;
636 wav->smv_last_stream &= !wav->smv_eof;
637 if (wav->smv_last_stream) {
638 uint64_t old_pos = avio_tell(s->pb);
639 uint64_t new_pos = wav->smv_data_ofs +
640 wav->smv_block * wav->smv_block_size;
641 if (avio_seek(s->pb, new_pos, SEEK_SET) < 0) {
645 size = avio_rl24(s->pb);
646 ret = av_get_packet(s->pb, pkt, size);
650 pkt->pts = wav->smv_block * wav->smv_frames_per_jpeg + wav->smv_cur_pt;
652 if (wav->smv_frames_per_jpeg > 0)
653 wav->smv_cur_pt %= wav->smv_frames_per_jpeg;
654 if (!wav->smv_cur_pt)
657 pkt->stream_index = 1;
659 avio_seek(s->pb, old_pos, SEEK_SET);
660 if (ret == AVERROR_EOF) {
670 left = wav->data_end - avio_tell(s->pb);
671 if (wav->ignore_length)
674 if (CONFIG_W64_DEMUXER && wav->w64)
675 left = find_guid(s->pb, ff_w64_guid_data) - 24;
677 left = find_tag(wav, s->pb, MKTAG('d', 'a', 't', 'a'));
680 if (wav->smv_data_ofs > 0 && !wav->smv_eof)
684 wav->data_end = avio_tell(s->pb) + left;
688 if (st->codecpar->block_align > 1) {
689 if (size < st->codecpar->block_align)
690 size = st->codecpar->block_align;
691 size = (size / st->codecpar->block_align) * st->codecpar->block_align;
693 size = FFMIN(size, left);
694 ret = av_get_packet(s->pb, pkt, size);
697 pkt->stream_index = 0;
702 static int wav_read_seek(AVFormatContext *s,
703 int stream_index, int64_t timestamp, int flags)
705 WAVDemuxContext *wav = s->priv_data;
709 if (wav->smv_data_ofs > 0) {
710 int64_t smv_timestamp = timestamp;
711 if (stream_index == 0)
712 smv_timestamp = av_rescale_q(timestamp, s->streams[0]->time_base, s->streams[1]->time_base);
714 timestamp = av_rescale_q(smv_timestamp, s->streams[1]->time_base, s->streams[0]->time_base);
715 if (wav->smv_frames_per_jpeg > 0) {
716 wav->smv_block = smv_timestamp / wav->smv_frames_per_jpeg;
717 wav->smv_cur_pt = smv_timestamp % wav->smv_frames_per_jpeg;
722 switch (st->codecpar->codec_id) {
723 case AV_CODEC_ID_MP2:
724 case AV_CODEC_ID_MP3:
725 case AV_CODEC_ID_AC3:
726 case AV_CODEC_ID_DTS:
727 case AV_CODEC_ID_XMA2:
728 /* use generic seeking with dynamically generated indexes */
733 return ff_pcm_read_seek(s, stream_index, timestamp, flags);
736 #define OFFSET(x) offsetof(WAVDemuxContext, x)
737 #define DEC AV_OPT_FLAG_DECODING_PARAM
738 static const AVOption demux_options[] = {
739 { "ignore_length", "Ignore length", OFFSET(ignore_length), AV_OPT_TYPE_BOOL, { .i64 = 0 }, 0, 1, DEC },
743 static const AVClass wav_demuxer_class = {
744 .class_name = "WAV demuxer",
745 .item_name = av_default_item_name,
746 .option = demux_options,
747 .version = LIBAVUTIL_VERSION_INT,
749 AVInputFormat ff_wav_demuxer = {
751 .long_name = NULL_IF_CONFIG_SMALL("WAV / WAVE (Waveform Audio)"),
752 .priv_data_size = sizeof(WAVDemuxContext),
753 .read_probe = wav_probe,
754 .read_header = wav_read_header,
755 .read_packet = wav_read_packet,
756 .read_seek = wav_read_seek,
757 .flags = AVFMT_GENERIC_INDEX,
758 .codec_tag = (const AVCodecTag * const []) { ff_codec_wav_tags, 0 },
759 .priv_class = &wav_demuxer_class,
761 #endif /* CONFIG_WAV_DEMUXER */
763 #if CONFIG_W64_DEMUXER
764 static int w64_probe(AVProbeData *p)
766 if (p->buf_size <= 40)
768 if (!memcmp(p->buf, ff_w64_guid_riff, 16) &&
769 !memcmp(p->buf + 24, ff_w64_guid_wave, 16))
770 return AVPROBE_SCORE_MAX;
775 static int w64_read_header(AVFormatContext *s)
777 int64_t size, data_ofs = 0;
778 AVIOContext *pb = s->pb;
779 WAVDemuxContext *wav = s->priv_data;
784 avio_read(pb, guid, 16);
785 if (memcmp(guid, ff_w64_guid_riff, 16))
786 return AVERROR_INVALIDDATA;
788 /* riff + wave + fmt + sizes */
789 if (avio_rl64(pb) < 16 + 8 + 16 + 8 + 16 + 8)
790 return AVERROR_INVALIDDATA;
792 avio_read(pb, guid, 16);
793 if (memcmp(guid, ff_w64_guid_wave, 16)) {
794 av_log(s, AV_LOG_ERROR, "could not find wave guid\n");
795 return AVERROR_INVALIDDATA;
800 st = avformat_new_stream(s, NULL);
802 return AVERROR(ENOMEM);
804 while (!avio_feof(pb)) {
805 if (avio_read(pb, guid, 16) != 16)
807 size = avio_rl64(pb);
808 if (size <= 24 || INT64_MAX - size < avio_tell(pb))
809 return AVERROR_INVALIDDATA;
811 if (!memcmp(guid, ff_w64_guid_fmt, 16)) {
812 /* subtract chunk header size - normal wav file doesn't count it */
813 ret = ff_get_wav_header(s, pb, st->codecpar, size - 24, 0);
816 avio_skip(pb, FFALIGN(size, INT64_C(8)) - size);
818 avpriv_set_pts_info(st, 64, 1, st->codecpar->sample_rate);
819 } else if (!memcmp(guid, ff_w64_guid_fact, 16)) {
822 samples = avio_rl64(pb);
824 st->duration = samples;
825 avio_skip(pb, FFALIGN(size, INT64_C(8)) - 32);
826 } else if (!memcmp(guid, ff_w64_guid_data, 16)) {
827 wav->data_end = avio_tell(pb) + size - 24;
829 data_ofs = avio_tell(pb);
830 if (!(pb->seekable & AVIO_SEEKABLE_NORMAL))
833 avio_skip(pb, size - 24);
834 } else if (!memcmp(guid, ff_w64_guid_summarylist, 16)) {
835 int64_t start, end, cur;
836 uint32_t count, chunk_size, i;
838 start = avio_tell(pb);
839 end = start + FFALIGN(size, INT64_C(8)) - 24;
840 count = avio_rl32(pb);
842 for (i = 0; i < count; i++) {
843 char chunk_key[5], *value;
845 if (avio_feof(pb) || (cur = avio_tell(pb)) < 0 || cur > end - 8 /* = tag + size */)
849 avio_read(pb, chunk_key, 4);
850 chunk_size = avio_rl32(pb);
851 if (chunk_size == UINT32_MAX)
852 return AVERROR_INVALIDDATA;
854 value = av_mallocz(chunk_size + 1);
856 return AVERROR(ENOMEM);
858 ret = avio_get_str16le(pb, chunk_size, value, chunk_size);
859 avio_skip(pb, chunk_size - ret);
861 av_dict_set(&s->metadata, chunk_key, value, AV_DICT_DONT_STRDUP_VAL);
864 avio_skip(pb, end - avio_tell(pb));
866 av_log(s, AV_LOG_DEBUG, "unknown guid: "FF_PRI_GUID"\n", FF_ARG_GUID(guid));
867 avio_skip(pb, FFALIGN(size, INT64_C(8)) - 24);
874 ff_metadata_conv_ctx(s, NULL, wav_metadata_conv);
875 ff_metadata_conv_ctx(s, NULL, ff_riff_info_conv);
877 handle_stream_probing(st);
878 st->need_parsing = AVSTREAM_PARSE_FULL_RAW;
880 avio_seek(pb, data_ofs, SEEK_SET);
887 AVInputFormat ff_w64_demuxer = {
889 .long_name = NULL_IF_CONFIG_SMALL("Sony Wave64"),
890 .priv_data_size = sizeof(WAVDemuxContext),
891 .read_probe = w64_probe,
892 .read_header = w64_read_header,
893 .read_packet = wav_read_packet,
894 .read_seek = wav_read_seek,
895 .flags = AVFMT_GENERIC_INDEX,
896 .codec_tag = (const AVCodecTag * const []) { ff_codec_wav_tags, 0 },
898 #endif /* CONFIG_W64_DEMUXER */