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"
45 typedef struct WAVDemuxContext {
51 int smv_frames_per_jpeg;
60 int unaligned; // e.g. if an odd number of bytes ID3 tag was prepended
61 int rifx; // RIFX: integer byte order for parameters is big endian
64 static void set_spdif(AVFormatContext *s, WAVDemuxContext *wav)
66 if (CONFIG_SPDIF_DEMUXER && s->streams[0]->codecpar->codec_tag == 1) {
69 int ret = ffio_ensure_seekback(s->pb, len);
72 uint8_t *buf = av_malloc(len);
74 ret = AVERROR(ENOMEM);
76 int64_t pos = avio_tell(s->pb);
77 len = ret = avio_read(s->pb, buf, len);
79 ret = ff_spdif_probe(buf, len, &codec);
80 if (ret > AVPROBE_SCORE_EXTENSION) {
81 s->streams[0]->codecpar->codec_id = codec;
85 avio_seek(s->pb, pos, SEEK_SET);
91 av_log(s, AV_LOG_WARNING, "Cannot check for SPDIF\n");
95 #if CONFIG_WAV_DEMUXER
97 static int64_t next_tag(AVIOContext *pb, uint32_t *tag, int big_endian)
101 return avio_rl32(pb);
103 return avio_rb32(pb);
107 /* RIFF chunks are always at even offsets relative to where they start. */
108 static int64_t wav_seek_tag(WAVDemuxContext * wav, AVIOContext *s, int64_t offset, int whence)
110 offset += offset < INT64_MAX && offset + wav->unaligned & 1;
112 return avio_seek(s, offset, whence);
115 /* return the size of the found tag */
116 static int64_t find_tag(WAVDemuxContext * wav, AVIOContext *pb, uint32_t tag1)
124 size = next_tag(pb, &tag, wav->rifx);
127 wav_seek_tag(wav, pb, size, SEEK_CUR);
132 static int wav_probe(const AVProbeData *p)
134 /* check file header */
135 if (p->buf_size <= 32)
137 if (!memcmp(p->buf + 8, "WAVE", 4)) {
138 if (!memcmp(p->buf, "RIFF", 4) || !memcmp(p->buf, "RIFX", 4))
139 /* Since the ACT demuxer has a standard WAV header at the top of
140 * its own, the returned score is decreased to avoid a probe
141 * conflict between ACT and WAV. */
142 return AVPROBE_SCORE_MAX - 1;
143 else if (!memcmp(p->buf, "RF64", 4) &&
144 !memcmp(p->buf + 12, "ds64", 4))
145 return AVPROBE_SCORE_MAX;
150 static void handle_stream_probing(AVStream *st)
152 if (st->codecpar->codec_id == AV_CODEC_ID_PCM_S16LE) {
153 st->request_probe = AVPROBE_SCORE_EXTENSION;
154 st->probe_packets = FFMIN(st->probe_packets, 32);
158 static int wav_parse_fmt_tag(AVFormatContext *s, int64_t size, AVStream **st)
160 AVIOContext *pb = s->pb;
161 WAVDemuxContext *wav = s->priv_data;
164 /* parse fmt header */
165 *st = avformat_new_stream(s, NULL);
167 return AVERROR(ENOMEM);
169 ret = ff_get_wav_header(s, pb, (*st)->codecpar, size, wav->rifx);
172 handle_stream_probing(*st);
174 (*st)->need_parsing = AVSTREAM_PARSE_FULL_RAW;
176 avpriv_set_pts_info(*st, 64, 1, (*st)->codecpar->sample_rate);
181 static int wav_parse_xma2_tag(AVFormatContext *s, int64_t size, AVStream **st)
183 AVIOContext *pb = s->pb;
184 int version, num_streams, i, channels = 0, ret;
187 return AVERROR_INVALIDDATA;
189 *st = avformat_new_stream(s, NULL);
191 return AVERROR(ENOMEM);
193 (*st)->codecpar->codec_type = AVMEDIA_TYPE_AUDIO;
194 (*st)->codecpar->codec_id = AV_CODEC_ID_XMA2;
195 (*st)->need_parsing = AVSTREAM_PARSE_FULL_RAW;
197 version = avio_r8(pb);
198 if (version != 3 && version != 4)
199 return AVERROR_INVALIDDATA;
200 num_streams = avio_r8(pb);
201 if (size != (32 + ((version==3)?0:8) + 4*num_streams))
202 return AVERROR_INVALIDDATA;
204 (*st)->codecpar->sample_rate = avio_rb32(pb);
208 (*st)->duration = avio_rb32(pb);
211 for (i = 0; i < num_streams; i++) {
212 channels += avio_r8(pb);
215 (*st)->codecpar->channels = channels;
217 if ((*st)->codecpar->channels <= 0 || (*st)->codecpar->sample_rate <= 0)
218 return AVERROR_INVALIDDATA;
220 avpriv_set_pts_info(*st, 64, 1, (*st)->codecpar->sample_rate);
222 avio_seek(pb, -size, SEEK_CUR);
223 if ((ret = ff_get_extradata(s, (*st)->codecpar, pb, size)) < 0)
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)) != length)
237 return ret < 0 ? ret : AVERROR_INVALIDDATA;
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)) != size) {
307 av_free(coding_history);
308 return ret < 0 ? ret : AVERROR_INVALIDDATA;
311 coding_history[size] = 0;
312 if ((ret = av_dict_set(&s->metadata, "coding_history", coding_history,
313 AV_DICT_DONT_STRDUP_VAL)) < 0)
320 static const AVMetadataConv wav_metadata_conv[] = {
321 { "description", "comment" },
322 { "originator", "encoded_by" },
323 { "origination_date", "date" },
324 { "origination_time", "creation_time" },
329 static int wav_read_header(AVFormatContext *s)
331 int64_t size, av_uninit(data_size);
332 int64_t sample_count = 0;
335 AVIOContext *pb = s->pb;
337 WAVDemuxContext *wav = s->priv_data;
338 int ret, got_fmt = 0, got_xma2 = 0;
339 int64_t next_tag_ofs, data_ofs = -1;
341 wav->unaligned = avio_tell(s->pb) & 1;
343 wav->smv_data_ofs = -1;
348 case MKTAG('R', 'I', 'F', 'F'):
350 case MKTAG('R', 'I', 'F', 'X'):
353 case MKTAG('R', 'F', '6', '4'):
357 av_log(s, AV_LOG_ERROR, "invalid start code %s in RIFF header\n",
359 return AVERROR_INVALIDDATA;
362 /* read chunk size */
366 if (avio_rl32(pb) != MKTAG('W', 'A', 'V', 'E')) {
367 av_log(s, AV_LOG_ERROR, "invalid format in RIFF header\n");
368 return AVERROR_INVALIDDATA;
372 if (avio_rl32(pb) != MKTAG('d', 's', '6', '4'))
373 return AVERROR_INVALIDDATA;
374 size = avio_rl32(pb);
376 return AVERROR_INVALIDDATA;
377 avio_rl64(pb); /* RIFF size */
379 data_size = avio_rl64(pb);
380 sample_count = avio_rl64(pb);
382 if (data_size < 0 || sample_count < 0) {
383 av_log(s, AV_LOG_ERROR, "negative data_size and/or sample_count in "
384 "ds64: data_size = %"PRId64", sample_count = %"PRId64"\n",
385 data_size, sample_count);
386 return AVERROR_INVALIDDATA;
388 avio_skip(pb, size - 24); /* skip rest of ds64 chunk */
394 size = next_tag(pb, &tag, wav->rifx);
395 next_tag_ofs = avio_tell(pb) + size;
401 case MKTAG('f', 'm', 't', ' '):
402 /* only parse the first 'fmt ' tag found */
403 if (!got_xma2 && !got_fmt && (ret = wav_parse_fmt_tag(s, size, &st)) < 0) {
406 av_log(s, AV_LOG_WARNING, "found more than one 'fmt ' tag\n");
410 case MKTAG('X', 'M', 'A', '2'):
411 /* only parse the first 'XMA2' tag found */
412 if (!got_fmt && !got_xma2 && (ret = wav_parse_xma2_tag(s, size, &st)) < 0) {
415 av_log(s, AV_LOG_WARNING, "found more than one 'XMA2' tag\n");
419 case MKTAG('d', 'a', 't', 'a'):
420 if (!(pb->seekable & AVIO_SEEKABLE_NORMAL) && !got_fmt && !got_xma2) {
421 av_log(s, AV_LOG_ERROR,
422 "found no 'fmt ' tag before the 'data' tag\n");
423 return AVERROR_INVALIDDATA;
427 next_tag_ofs = wav->data_end = avio_tell(pb) + data_size;
428 } else if (size != 0xFFFFFFFF) {
430 next_tag_ofs = wav->data_end = size ? next_tag_ofs : INT64_MAX;
432 av_log(s, AV_LOG_WARNING, "Ignoring maximum wav data size, "
433 "file may be invalid\n");
435 next_tag_ofs = wav->data_end = INT64_MAX;
438 data_ofs = avio_tell(pb);
440 /* don't look for footer metadata if we can't seek or if we don't
441 * know where the data tag ends
443 if (!(pb->seekable & AVIO_SEEKABLE_NORMAL) || (!rf64 && !size))
446 case MKTAG('f', 'a', 'c', 't'):
448 sample_count = (!wav->rifx ? avio_rl32(pb) : avio_rb32(pb));
450 case MKTAG('b', 'e', 'x', 't'):
451 if ((ret = wav_parse_bext_tag(s, size)) < 0)
454 case MKTAG('S','M','V','0'):
456 av_log(s, AV_LOG_ERROR, "found no 'fmt ' tag before the 'SMV0' tag\n");
457 return AVERROR_INVALIDDATA;
459 // SMV file, a wav file with video appended.
460 if (size != MKTAG('0','2','0','0')) {
461 av_log(s, AV_LOG_ERROR, "Unknown SMV version found\n");
464 av_log(s, AV_LOG_DEBUG, "Found SMV data\n");
465 wav->smv_given_first = 0;
466 vst = avformat_new_stream(s, NULL);
468 return AVERROR(ENOMEM);
471 vst->codecpar->codec_type = AVMEDIA_TYPE_VIDEO;
472 vst->codecpar->codec_id = AV_CODEC_ID_SMVJPEG;
473 vst->codecpar->width = avio_rl24(pb);
474 vst->codecpar->height = avio_rl24(pb);
475 if ((ret = ff_alloc_extradata(vst->codecpar, 4)) < 0) {
476 av_log(s, AV_LOG_ERROR, "Could not allocate extradata.\n");
479 size = avio_rl24(pb);
480 wav->smv_data_ofs = avio_tell(pb) + (size - 5) * 3;
482 wav->smv_block_size = avio_rl24(pb);
483 avpriv_set_pts_info(vst, 32, 1, avio_rl24(pb));
484 vst->duration = avio_rl24(pb);
487 wav->smv_frames_per_jpeg = avio_rl24(pb);
488 if (wav->smv_frames_per_jpeg > 65536) {
489 av_log(s, AV_LOG_ERROR, "too many frames per jpeg\n");
490 return AVERROR_INVALIDDATA;
492 AV_WL32(vst->codecpar->extradata, wav->smv_frames_per_jpeg);
495 case MKTAG('L', 'I', 'S', 'T'):
497 av_log(s, AV_LOG_ERROR, "too short LIST tag\n");
498 return AVERROR_INVALIDDATA;
500 switch (avio_rl32(pb)) {
501 case MKTAG('I', 'N', 'F', 'O'):
502 ff_read_riff_info(s, size - 4);
505 case MKTAG('I', 'D', '3', ' '):
506 case MKTAG('i', 'd', '3', ' '): {
507 ID3v2ExtraMeta *id3v2_extra_meta = NULL;
508 ff_id3v2_read_dict(pb, &s->internal->id3v2_meta, ID3v2_DEFAULT_MAGIC, &id3v2_extra_meta);
509 if (id3v2_extra_meta) {
510 ff_id3v2_parse_apic(s, &id3v2_extra_meta);
511 ff_id3v2_parse_chapters(s, &id3v2_extra_meta);
512 ff_id3v2_parse_priv(s, &id3v2_extra_meta);
514 ff_id3v2_free_extra_meta(&id3v2_extra_meta);
519 /* seek to next tag unless we know that we'll run into EOF */
520 if ((avio_size(pb) > 0 && next_tag_ofs >= avio_size(pb)) ||
521 wav_seek_tag(wav, pb, next_tag_ofs, SEEK_SET) < 0) {
527 if (!got_fmt && !got_xma2) {
528 av_log(s, AV_LOG_ERROR, "no 'fmt ' or 'XMA2' tag found\n");
529 return AVERROR_INVALIDDATA;
533 av_log(s, AV_LOG_ERROR, "no 'data' tag found\n");
534 return AVERROR_INVALIDDATA;
537 avio_seek(pb, data_ofs, SEEK_SET);
539 if (data_size > (INT64_MAX>>3)) {
540 av_log(s, AV_LOG_WARNING, "Data size %"PRId64" is too large\n", data_size);
544 if ( st->codecpar->bit_rate > 0 && data_size > 0
545 && st->codecpar->sample_rate > 0
546 && sample_count > 0 && st->codecpar->channels > 1
547 && sample_count % st->codecpar->channels == 0) {
548 if (fabs(8.0 * data_size * st->codecpar->channels * st->codecpar->sample_rate /
549 sample_count /st->codecpar->bit_rate - 1.0) < 0.3)
550 sample_count /= st->codecpar->channels;
553 if ( data_size > 0 && sample_count && st->codecpar->channels
554 && (data_size << 3) / sample_count / st->codecpar->channels > st->codecpar->bits_per_coded_sample + 1) {
555 av_log(s, AV_LOG_WARNING, "ignoring wrong sample_count %"PRId64"\n", sample_count);
559 /* G.729 hack (for Ticket4577)
560 * FIXME: Come up with cleaner, more general solution */
561 if (st->codecpar->codec_id == AV_CODEC_ID_G729 && sample_count && (data_size << 3) > sample_count) {
562 av_log(s, AV_LOG_WARNING, "ignoring wrong sample_count %"PRId64"\n", sample_count);
566 if (!sample_count || av_get_exact_bits_per_sample(st->codecpar->codec_id) > 0)
567 if ( st->codecpar->channels
569 && av_get_bits_per_sample(st->codecpar->codec_id)
570 && wav->data_end <= avio_size(pb))
571 sample_count = (data_size << 3)
573 (st->codecpar->channels * (uint64_t)av_get_bits_per_sample(st->codecpar->codec_id));
576 st->duration = sample_count;
578 if (st->codecpar->codec_id == AV_CODEC_ID_PCM_S32LE &&
579 st->codecpar->block_align == st->codecpar->channels * 4 &&
580 st->codecpar->bits_per_coded_sample == 32 &&
581 st->codecpar->extradata_size == 2 &&
582 AV_RL16(st->codecpar->extradata) == 1) {
583 st->codecpar->codec_id = AV_CODEC_ID_PCM_F16LE;
584 st->codecpar->bits_per_coded_sample = 16;
585 } else if (st->codecpar->codec_id == AV_CODEC_ID_PCM_S24LE &&
586 st->codecpar->block_align == st->codecpar->channels * 4 &&
587 st->codecpar->bits_per_coded_sample == 24) {
588 st->codecpar->codec_id = AV_CODEC_ID_PCM_F24LE;
589 } else if (st->codecpar->codec_id == AV_CODEC_ID_XMA1 ||
590 st->codecpar->codec_id == AV_CODEC_ID_XMA2) {
591 st->codecpar->block_align = 2048;
592 } else if (st->codecpar->codec_id == AV_CODEC_ID_ADPCM_MS && st->codecpar->channels > 2) {
593 st->codecpar->block_align *= st->codecpar->channels;
596 ff_metadata_conv_ctx(s, NULL, wav_metadata_conv);
597 ff_metadata_conv_ctx(s, NULL, ff_riff_info_conv);
605 * Find chunk with w64 GUID by skipping over other chunks.
606 * @return the size of the found chunk
608 static int64_t find_guid(AVIOContext *pb, const uint8_t guid1[16])
613 while (!avio_feof(pb)) {
614 avio_read(pb, guid, 16);
615 size = avio_rl64(pb);
617 return AVERROR_INVALIDDATA;
618 if (!memcmp(guid, guid1, 16))
620 avio_skip(pb, FFALIGN(size, INT64_C(8)) - 24);
625 #define MAX_SIZE 4096
627 static int wav_read_packet(AVFormatContext *s, AVPacket *pkt)
632 WAVDemuxContext *wav = s->priv_data;
634 if (CONFIG_SPDIF_DEMUXER && wav->spdif == 1)
635 return ff_spdif_read_packet(s, pkt);
637 if (wav->smv_data_ofs > 0) {
638 int64_t audio_dts, video_dts;
640 audio_dts = (int32_t)s->streams[0]->cur_dts;
641 video_dts = (int32_t)s->streams[1]->cur_dts;
643 if (audio_dts != AV_NOPTS_VALUE && video_dts != AV_NOPTS_VALUE) {
644 /*We always return a video frame first to get the pixel format first*/
645 wav->smv_last_stream = wav->smv_given_first ?
646 av_compare_ts(video_dts, s->streams[1]->time_base,
647 audio_dts, s->streams[0]->time_base) > 0 : 0;
648 wav->smv_given_first = 1;
650 wav->smv_last_stream = !wav->smv_last_stream;
651 wav->smv_last_stream |= wav->audio_eof;
652 wav->smv_last_stream &= !wav->smv_eof;
653 if (wav->smv_last_stream) {
654 uint64_t old_pos = avio_tell(s->pb);
655 uint64_t new_pos = wav->smv_data_ofs +
656 wav->smv_block * wav->smv_block_size;
657 if (avio_seek(s->pb, new_pos, SEEK_SET) < 0) {
661 size = avio_rl24(s->pb);
662 ret = av_get_packet(s->pb, pkt, size);
666 pkt->pts = wav->smv_block * wav->smv_frames_per_jpeg + wav->smv_cur_pt;
668 if (wav->smv_frames_per_jpeg > 0)
669 wav->smv_cur_pt %= wav->smv_frames_per_jpeg;
670 if (!wav->smv_cur_pt)
673 pkt->stream_index = 1;
675 avio_seek(s->pb, old_pos, SEEK_SET);
676 if (ret == AVERROR_EOF) {
686 left = wav->data_end - avio_tell(s->pb);
687 if (wav->ignore_length)
690 if (CONFIG_W64_DEMUXER && wav->w64)
691 left = find_guid(s->pb, ff_w64_guid_data) - 24;
693 left = find_tag(wav, s->pb, MKTAG('d', 'a', 't', 'a'));
696 if (wav->smv_data_ofs > 0 && !wav->smv_eof)
700 wav->data_end = avio_tell(s->pb) + left;
704 if (st->codecpar->block_align > 1) {
705 if (size < st->codecpar->block_align)
706 size = st->codecpar->block_align;
707 size = (size / st->codecpar->block_align) * st->codecpar->block_align;
709 size = FFMIN(size, left);
710 ret = av_get_packet(s->pb, pkt, size);
713 pkt->stream_index = 0;
718 static int wav_read_seek(AVFormatContext *s,
719 int stream_index, int64_t timestamp, int flags)
721 WAVDemuxContext *wav = s->priv_data;
725 if (wav->smv_data_ofs > 0) {
726 int64_t smv_timestamp = timestamp;
727 if (stream_index == 0)
728 smv_timestamp = av_rescale_q(timestamp, s->streams[0]->time_base, s->streams[1]->time_base);
730 timestamp = av_rescale_q(smv_timestamp, s->streams[1]->time_base, s->streams[0]->time_base);
731 if (wav->smv_frames_per_jpeg > 0) {
732 wav->smv_block = smv_timestamp / wav->smv_frames_per_jpeg;
733 wav->smv_cur_pt = smv_timestamp % wav->smv_frames_per_jpeg;
738 switch (st->codecpar->codec_id) {
739 case AV_CODEC_ID_MP2:
740 case AV_CODEC_ID_MP3:
741 case AV_CODEC_ID_AC3:
742 case AV_CODEC_ID_DTS:
743 case AV_CODEC_ID_XMA2:
744 /* use generic seeking with dynamically generated indexes */
749 return ff_pcm_read_seek(s, stream_index, timestamp, flags);
752 #define OFFSET(x) offsetof(WAVDemuxContext, x)
753 #define DEC AV_OPT_FLAG_DECODING_PARAM
754 static const AVOption demux_options[] = {
755 { "ignore_length", "Ignore length", OFFSET(ignore_length), AV_OPT_TYPE_BOOL, { .i64 = 0 }, 0, 1, DEC },
759 static const AVClass wav_demuxer_class = {
760 .class_name = "WAV demuxer",
761 .item_name = av_default_item_name,
762 .option = demux_options,
763 .version = LIBAVUTIL_VERSION_INT,
765 AVInputFormat ff_wav_demuxer = {
767 .long_name = NULL_IF_CONFIG_SMALL("WAV / WAVE (Waveform Audio)"),
768 .priv_data_size = sizeof(WAVDemuxContext),
769 .read_probe = wav_probe,
770 .read_header = wav_read_header,
771 .read_packet = wav_read_packet,
772 .read_seek = wav_read_seek,
773 .flags = AVFMT_GENERIC_INDEX,
774 .codec_tag = (const AVCodecTag * const []) { ff_codec_wav_tags, 0 },
775 .priv_class = &wav_demuxer_class,
777 #endif /* CONFIG_WAV_DEMUXER */
779 #if CONFIG_W64_DEMUXER
780 static int w64_probe(const AVProbeData *p)
782 if (p->buf_size <= 40)
784 if (!memcmp(p->buf, ff_w64_guid_riff, 16) &&
785 !memcmp(p->buf + 24, ff_w64_guid_wave, 16))
786 return AVPROBE_SCORE_MAX;
791 static int w64_read_header(AVFormatContext *s)
793 int64_t size, data_ofs = 0;
794 AVIOContext *pb = s->pb;
795 WAVDemuxContext *wav = s->priv_data;
800 avio_read(pb, guid, 16);
801 if (memcmp(guid, ff_w64_guid_riff, 16))
802 return AVERROR_INVALIDDATA;
804 /* riff + wave + fmt + sizes */
805 if (avio_rl64(pb) < 16 + 8 + 16 + 8 + 16 + 8)
806 return AVERROR_INVALIDDATA;
808 avio_read(pb, guid, 16);
809 if (memcmp(guid, ff_w64_guid_wave, 16)) {
810 av_log(s, AV_LOG_ERROR, "could not find wave guid\n");
811 return AVERROR_INVALIDDATA;
816 st = avformat_new_stream(s, NULL);
818 return AVERROR(ENOMEM);
820 while (!avio_feof(pb)) {
821 if (avio_read(pb, guid, 16) != 16)
823 size = avio_rl64(pb);
824 if (size <= 24 || INT64_MAX - size < avio_tell(pb))
825 return AVERROR_INVALIDDATA;
827 if (!memcmp(guid, ff_w64_guid_fmt, 16)) {
828 /* subtract chunk header size - normal wav file doesn't count it */
829 ret = ff_get_wav_header(s, pb, st->codecpar, size - 24, 0);
832 avio_skip(pb, FFALIGN(size, INT64_C(8)) - size);
834 avpriv_set_pts_info(st, 64, 1, st->codecpar->sample_rate);
835 } else if (!memcmp(guid, ff_w64_guid_fact, 16)) {
838 samples = avio_rl64(pb);
840 st->duration = samples;
841 avio_skip(pb, FFALIGN(size, INT64_C(8)) - 32);
842 } else if (!memcmp(guid, ff_w64_guid_data, 16)) {
843 wav->data_end = avio_tell(pb) + size - 24;
845 data_ofs = avio_tell(pb);
846 if (!(pb->seekable & AVIO_SEEKABLE_NORMAL))
849 avio_skip(pb, size - 24);
850 } else if (!memcmp(guid, ff_w64_guid_summarylist, 16)) {
851 int64_t start, end, cur;
852 uint32_t count, chunk_size, i;
854 start = avio_tell(pb);
855 end = start + FFALIGN(size, INT64_C(8)) - 24;
856 count = avio_rl32(pb);
858 for (i = 0; i < count; i++) {
859 char chunk_key[5], *value;
861 if (avio_feof(pb) || (cur = avio_tell(pb)) < 0 || cur > end - 8 /* = tag + size */)
865 avio_read(pb, chunk_key, 4);
866 chunk_size = avio_rl32(pb);
867 if (chunk_size == UINT32_MAX)
868 return AVERROR_INVALIDDATA;
870 value = av_mallocz(chunk_size + 1);
872 return AVERROR(ENOMEM);
874 ret = avio_get_str16le(pb, chunk_size, value, chunk_size);
875 avio_skip(pb, chunk_size - ret);
877 av_dict_set(&s->metadata, chunk_key, value, AV_DICT_DONT_STRDUP_VAL);
880 avio_skip(pb, end - avio_tell(pb));
882 av_log(s, AV_LOG_DEBUG, "unknown guid: "FF_PRI_GUID"\n", FF_ARG_GUID(guid));
883 avio_skip(pb, FFALIGN(size, INT64_C(8)) - 24);
890 ff_metadata_conv_ctx(s, NULL, wav_metadata_conv);
891 ff_metadata_conv_ctx(s, NULL, ff_riff_info_conv);
893 handle_stream_probing(st);
894 st->need_parsing = AVSTREAM_PARSE_FULL_RAW;
896 avio_seek(pb, data_ofs, SEEK_SET);
903 AVInputFormat ff_w64_demuxer = {
905 .long_name = NULL_IF_CONFIG_SMALL("Sony Wave64"),
906 .priv_data_size = sizeof(WAVDemuxContext),
907 .read_probe = w64_probe,
908 .read_header = w64_read_header,
909 .read_packet = wav_read_packet,
910 .read_seek = wav_read_seek,
911 .flags = AVFMT_GENERIC_INDEX,
912 .codec_tag = (const AVCodecTag * const []) { ff_codec_wav_tags, 0 },
914 #endif /* CONFIG_W64_DEMUXER */