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(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;
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 av_freep(&(*st)->codecpar->extradata);
224 if (ff_get_extradata(s, (*st)->codecpar, pb, size) < 0)
225 return AVERROR(ENOMEM);
230 static inline int wav_parse_bext_string(AVFormatContext *s, const char *key,
236 av_assert0(length <= sizeof(temp));
237 if ((ret = avio_read(s->pb, temp, length)) < 0)
243 return av_dict_set(&s->metadata, key, temp, 0);
248 static int wav_parse_bext_tag(AVFormatContext *s, int64_t size)
250 char temp[131], *coding_history;
252 uint64_t time_reference;
253 int64_t umid_parts[8], umid_mask = 0;
255 if ((ret = wav_parse_bext_string(s, "description", 256)) < 0 ||
256 (ret = wav_parse_bext_string(s, "originator", 32)) < 0 ||
257 (ret = wav_parse_bext_string(s, "originator_reference", 32)) < 0 ||
258 (ret = wav_parse_bext_string(s, "origination_date", 10)) < 0 ||
259 (ret = wav_parse_bext_string(s, "origination_time", 8)) < 0)
262 time_reference = avio_rl64(s->pb);
263 snprintf(temp, sizeof(temp), "%"PRIu64, time_reference);
264 if ((ret = av_dict_set(&s->metadata, "time_reference", temp, 0)) < 0)
267 /* check if version is >= 1, in which case an UMID may be present */
268 if (avio_rl16(s->pb) >= 1) {
269 for (x = 0; x < 8; x++)
270 umid_mask |= umid_parts[x] = avio_rb64(s->pb);
273 /* the string formatting below is per SMPTE 330M-2004 Annex C */
274 if (umid_parts[4] == 0 && umid_parts[5] == 0 &&
275 umid_parts[6] == 0 && umid_parts[7] == 0) {
277 snprintf(temp, sizeof(temp),
278 "0x%016"PRIX64"%016"PRIX64"%016"PRIX64"%016"PRIX64,
279 umid_parts[0], umid_parts[1],
280 umid_parts[2], umid_parts[3]);
283 snprintf(temp, sizeof(temp),
284 "0x%016"PRIX64"%016"PRIX64"%016"PRIX64"%016"PRIX64
285 "%016"PRIX64"%016"PRIX64"%016"PRIX64"%016"PRIX64,
286 umid_parts[0], umid_parts[1],
287 umid_parts[2], umid_parts[3],
288 umid_parts[4], umid_parts[5],
289 umid_parts[6], umid_parts[7]);
292 if ((ret = av_dict_set(&s->metadata, "umid", temp, 0)) < 0)
296 avio_skip(s->pb, 190);
298 avio_skip(s->pb, 254);
301 /* CodingHistory present */
304 if (!(coding_history = av_malloc(size + 1)))
305 return AVERROR(ENOMEM);
307 if ((ret = avio_read(s->pb, coding_history, size)) < 0)
310 coding_history[size] = 0;
311 if ((ret = av_dict_set(&s->metadata, "coding_history", coding_history,
312 AV_DICT_DONT_STRDUP_VAL)) < 0)
319 static const AVMetadataConv wav_metadata_conv[] = {
320 { "description", "comment" },
321 { "originator", "encoded_by" },
322 { "origination_date", "date" },
323 { "origination_time", "creation_time" },
328 static int wav_read_header(AVFormatContext *s)
330 int64_t size, av_uninit(data_size);
331 int64_t sample_count = 0;
334 AVIOContext *pb = s->pb;
336 WAVDemuxContext *wav = s->priv_data;
337 int ret, got_fmt = 0, got_xma2 = 0;
338 int64_t next_tag_ofs, data_ofs = -1;
340 wav->unaligned = avio_tell(s->pb) & 1;
342 wav->smv_data_ofs = -1;
347 case MKTAG('R', 'I', 'F', 'F'):
349 case MKTAG('R', 'I', 'F', 'X'):
352 case MKTAG('R', 'F', '6', '4'):
356 av_log(s, AV_LOG_ERROR, "invalid start code %s in RIFF header\n",
358 return AVERROR_INVALIDDATA;
361 /* read chunk size */
365 if (avio_rl32(pb) != MKTAG('W', 'A', 'V', 'E')) {
366 av_log(s, AV_LOG_ERROR, "invalid format in RIFF header\n");
367 return AVERROR_INVALIDDATA;
371 if (avio_rl32(pb) != MKTAG('d', 's', '6', '4'))
372 return AVERROR_INVALIDDATA;
373 size = avio_rl32(pb);
375 return AVERROR_INVALIDDATA;
376 avio_rl64(pb); /* RIFF size */
378 data_size = avio_rl64(pb);
379 sample_count = avio_rl64(pb);
381 if (data_size < 0 || sample_count < 0) {
382 av_log(s, AV_LOG_ERROR, "negative data_size and/or sample_count in "
383 "ds64: data_size = %"PRId64", sample_count = %"PRId64"\n",
384 data_size, sample_count);
385 return AVERROR_INVALIDDATA;
387 avio_skip(pb, size - 24); /* skip rest of ds64 chunk */
393 size = next_tag(pb, &tag, wav->rifx);
394 next_tag_ofs = avio_tell(pb) + size;
400 case MKTAG('f', 'm', 't', ' '):
401 /* only parse the first 'fmt ' tag found */
402 if (!got_xma2 && !got_fmt && (ret = wav_parse_fmt_tag(s, size, &st)) < 0) {
405 av_log(s, AV_LOG_WARNING, "found more than one 'fmt ' tag\n");
409 case MKTAG('X', 'M', 'A', '2'):
410 /* only parse the first 'XMA2' tag found */
411 if (!got_fmt && !got_xma2 && (ret = wav_parse_xma2_tag(s, size, &st)) < 0) {
414 av_log(s, AV_LOG_WARNING, "found more than one 'XMA2' tag\n");
418 case MKTAG('d', 'a', 't', 'a'):
419 if (!(pb->seekable & AVIO_SEEKABLE_NORMAL) && !got_fmt && !got_xma2) {
420 av_log(s, AV_LOG_ERROR,
421 "found no 'fmt ' tag before the 'data' tag\n");
422 return AVERROR_INVALIDDATA;
426 next_tag_ofs = wav->data_end = avio_tell(pb) + data_size;
427 } else if (size != 0xFFFFFFFF) {
429 next_tag_ofs = wav->data_end = size ? next_tag_ofs : INT64_MAX;
431 av_log(s, AV_LOG_WARNING, "Ignoring maximum wav data size, "
432 "file may be invalid\n");
434 next_tag_ofs = wav->data_end = INT64_MAX;
437 data_ofs = avio_tell(pb);
439 /* don't look for footer metadata if we can't seek or if we don't
440 * know where the data tag ends
442 if (!(pb->seekable & AVIO_SEEKABLE_NORMAL) || (!rf64 && !size))
445 case MKTAG('f', 'a', 'c', 't'):
447 sample_count = (!wav->rifx ? avio_rl32(pb) : avio_rb32(pb));
449 case MKTAG('b', 'e', 'x', 't'):
450 if ((ret = wav_parse_bext_tag(s, size)) < 0)
453 case MKTAG('S','M','V','0'):
455 av_log(s, AV_LOG_ERROR, "found no 'fmt ' tag before the 'SMV0' tag\n");
456 return AVERROR_INVALIDDATA;
458 // SMV file, a wav file with video appended.
459 if (size != MKTAG('0','2','0','0')) {
460 av_log(s, AV_LOG_ERROR, "Unknown SMV version found\n");
463 av_log(s, AV_LOG_DEBUG, "Found SMV data\n");
464 wav->smv_given_first = 0;
465 vst = avformat_new_stream(s, NULL);
467 return AVERROR(ENOMEM);
470 vst->codecpar->codec_type = AVMEDIA_TYPE_VIDEO;
471 vst->codecpar->codec_id = AV_CODEC_ID_SMVJPEG;
472 vst->codecpar->width = avio_rl24(pb);
473 vst->codecpar->height = avio_rl24(pb);
474 if (ff_alloc_extradata(vst->codecpar, 4)) {
475 av_log(s, AV_LOG_ERROR, "Could not allocate extradata.\n");
476 return AVERROR(ENOMEM);
478 size = avio_rl24(pb);
479 wav->smv_data_ofs = avio_tell(pb) + (size - 5) * 3;
481 wav->smv_block_size = avio_rl24(pb);
482 avpriv_set_pts_info(vst, 32, 1, avio_rl24(pb));
483 vst->duration = avio_rl24(pb);
486 wav->smv_frames_per_jpeg = avio_rl24(pb);
487 if (wav->smv_frames_per_jpeg > 65536) {
488 av_log(s, AV_LOG_ERROR, "too many frames per jpeg\n");
489 return AVERROR_INVALIDDATA;
491 AV_WL32(vst->codecpar->extradata, wav->smv_frames_per_jpeg);
494 case MKTAG('L', 'I', 'S', 'T'):
496 av_log(s, AV_LOG_ERROR, "too short LIST tag\n");
497 return AVERROR_INVALIDDATA;
499 switch (avio_rl32(pb)) {
500 case MKTAG('I', 'N', 'F', 'O'):
501 ff_read_riff_info(s, size - 4);
504 case MKTAG('I', 'D', '3', ' '):
505 case MKTAG('i', 'd', '3', ' '): {
506 ID3v2ExtraMeta *id3v2_extra_meta = NULL;
507 ff_id3v2_read_dict(pb, &s->internal->id3v2_meta, ID3v2_DEFAULT_MAGIC, &id3v2_extra_meta);
508 if (id3v2_extra_meta) {
509 ff_id3v2_parse_apic(s, &id3v2_extra_meta);
510 ff_id3v2_parse_chapters(s, &id3v2_extra_meta);
511 ff_id3v2_parse_priv(s, &id3v2_extra_meta);
513 ff_id3v2_free_extra_meta(&id3v2_extra_meta);
518 /* seek to next tag unless we know that we'll run into EOF */
519 if ((avio_size(pb) > 0 && next_tag_ofs >= avio_size(pb)) ||
520 wav_seek_tag(wav, pb, next_tag_ofs, SEEK_SET) < 0) {
526 if (!got_fmt && !got_xma2) {
527 av_log(s, AV_LOG_ERROR, "no 'fmt ' or 'XMA2' tag found\n");
528 return AVERROR_INVALIDDATA;
532 av_log(s, AV_LOG_ERROR, "no 'data' tag found\n");
533 return AVERROR_INVALIDDATA;
536 avio_seek(pb, data_ofs, SEEK_SET);
538 if (data_size > (INT64_MAX>>3)) {
539 av_log(s, AV_LOG_WARNING, "Data size %"PRId64" is too large\n", data_size);
543 if ( st->codecpar->bit_rate > 0 && data_size > 0
544 && st->codecpar->sample_rate > 0
545 && sample_count > 0 && st->codecpar->channels > 1
546 && sample_count % st->codecpar->channels == 0) {
547 if (fabs(8.0 * data_size * st->codecpar->channels * st->codecpar->sample_rate /
548 sample_count /st->codecpar->bit_rate - 1.0) < 0.3)
549 sample_count /= st->codecpar->channels;
552 if ( data_size > 0 && sample_count && st->codecpar->channels
553 && (data_size << 3) / sample_count / st->codecpar->channels > st->codecpar->bits_per_coded_sample + 1) {
554 av_log(s, AV_LOG_WARNING, "ignoring wrong sample_count %"PRId64"\n", sample_count);
558 /* G.729 hack (for Ticket4577)
559 * FIXME: Come up with cleaner, more general solution */
560 if (st->codecpar->codec_id == AV_CODEC_ID_G729 && sample_count && (data_size << 3) > sample_count) {
561 av_log(s, AV_LOG_WARNING, "ignoring wrong sample_count %"PRId64"\n", sample_count);
565 if (!sample_count || av_get_exact_bits_per_sample(st->codecpar->codec_id) > 0)
566 if ( st->codecpar->channels
568 && av_get_bits_per_sample(st->codecpar->codec_id)
569 && wav->data_end <= avio_size(pb))
570 sample_count = (data_size << 3)
572 (st->codecpar->channels * (uint64_t)av_get_bits_per_sample(st->codecpar->codec_id));
575 st->duration = sample_count;
577 if (st->codecpar->codec_id == AV_CODEC_ID_PCM_S32LE &&
578 st->codecpar->block_align == st->codecpar->channels * 4 &&
579 st->codecpar->bits_per_coded_sample == 32 &&
580 st->codecpar->extradata_size == 2 &&
581 AV_RL16(st->codecpar->extradata) == 1) {
582 st->codecpar->codec_id = AV_CODEC_ID_PCM_F16LE;
583 st->codecpar->bits_per_coded_sample = 16;
584 } else if (st->codecpar->codec_id == AV_CODEC_ID_PCM_S24LE &&
585 st->codecpar->block_align == st->codecpar->channels * 4 &&
586 st->codecpar->bits_per_coded_sample == 24) {
587 st->codecpar->codec_id = AV_CODEC_ID_PCM_F24LE;
588 } else if (st->codecpar->codec_id == AV_CODEC_ID_XMA1 ||
589 st->codecpar->codec_id == AV_CODEC_ID_XMA2) {
590 st->codecpar->block_align = 2048;
593 ff_metadata_conv_ctx(s, NULL, wav_metadata_conv);
594 ff_metadata_conv_ctx(s, NULL, ff_riff_info_conv);
602 * Find chunk with w64 GUID by skipping over other chunks.
603 * @return the size of the found chunk
605 static int64_t find_guid(AVIOContext *pb, const uint8_t guid1[16])
610 while (!avio_feof(pb)) {
611 avio_read(pb, guid, 16);
612 size = avio_rl64(pb);
614 return AVERROR_INVALIDDATA;
615 if (!memcmp(guid, guid1, 16))
617 avio_skip(pb, FFALIGN(size, INT64_C(8)) - 24);
622 #define MAX_SIZE 4096
624 static int wav_read_packet(AVFormatContext *s, AVPacket *pkt)
629 WAVDemuxContext *wav = s->priv_data;
631 if (CONFIG_SPDIF_DEMUXER && wav->spdif == 1)
632 return ff_spdif_read_packet(s, pkt);
634 if (wav->smv_data_ofs > 0) {
635 int64_t audio_dts, video_dts;
637 audio_dts = (int32_t)s->streams[0]->cur_dts;
638 video_dts = (int32_t)s->streams[1]->cur_dts;
640 if (audio_dts != AV_NOPTS_VALUE && video_dts != AV_NOPTS_VALUE) {
641 /*We always return a video frame first to get the pixel format first*/
642 wav->smv_last_stream = wav->smv_given_first ?
643 av_compare_ts(video_dts, s->streams[1]->time_base,
644 audio_dts, s->streams[0]->time_base) > 0 : 0;
645 wav->smv_given_first = 1;
647 wav->smv_last_stream = !wav->smv_last_stream;
648 wav->smv_last_stream |= wav->audio_eof;
649 wav->smv_last_stream &= !wav->smv_eof;
650 if (wav->smv_last_stream) {
651 uint64_t old_pos = avio_tell(s->pb);
652 uint64_t new_pos = wav->smv_data_ofs +
653 wav->smv_block * wav->smv_block_size;
654 if (avio_seek(s->pb, new_pos, SEEK_SET) < 0) {
658 size = avio_rl24(s->pb);
659 ret = av_get_packet(s->pb, pkt, size);
663 pkt->pts = wav->smv_block * wav->smv_frames_per_jpeg + wav->smv_cur_pt;
665 if (wav->smv_frames_per_jpeg > 0)
666 wav->smv_cur_pt %= wav->smv_frames_per_jpeg;
667 if (!wav->smv_cur_pt)
670 pkt->stream_index = 1;
672 avio_seek(s->pb, old_pos, SEEK_SET);
673 if (ret == AVERROR_EOF) {
683 left = wav->data_end - avio_tell(s->pb);
684 if (wav->ignore_length)
687 if (CONFIG_W64_DEMUXER && wav->w64)
688 left = find_guid(s->pb, ff_w64_guid_data) - 24;
690 left = find_tag(wav, s->pb, MKTAG('d', 'a', 't', 'a'));
693 if (wav->smv_data_ofs > 0 && !wav->smv_eof)
697 wav->data_end = avio_tell(s->pb) + left;
701 if (st->codecpar->block_align > 1) {
702 if (size < st->codecpar->block_align)
703 size = st->codecpar->block_align;
704 size = (size / st->codecpar->block_align) * st->codecpar->block_align;
706 size = FFMIN(size, left);
707 ret = av_get_packet(s->pb, pkt, size);
710 pkt->stream_index = 0;
715 static int wav_read_seek(AVFormatContext *s,
716 int stream_index, int64_t timestamp, int flags)
718 WAVDemuxContext *wav = s->priv_data;
722 if (wav->smv_data_ofs > 0) {
723 int64_t smv_timestamp = timestamp;
724 if (stream_index == 0)
725 smv_timestamp = av_rescale_q(timestamp, s->streams[0]->time_base, s->streams[1]->time_base);
727 timestamp = av_rescale_q(smv_timestamp, s->streams[1]->time_base, s->streams[0]->time_base);
728 if (wav->smv_frames_per_jpeg > 0) {
729 wav->smv_block = smv_timestamp / wav->smv_frames_per_jpeg;
730 wav->smv_cur_pt = smv_timestamp % wav->smv_frames_per_jpeg;
735 switch (st->codecpar->codec_id) {
736 case AV_CODEC_ID_MP2:
737 case AV_CODEC_ID_MP3:
738 case AV_CODEC_ID_AC3:
739 case AV_CODEC_ID_DTS:
740 case AV_CODEC_ID_XMA2:
741 /* use generic seeking with dynamically generated indexes */
746 return ff_pcm_read_seek(s, stream_index, timestamp, flags);
749 #define OFFSET(x) offsetof(WAVDemuxContext, x)
750 #define DEC AV_OPT_FLAG_DECODING_PARAM
751 static const AVOption demux_options[] = {
752 { "ignore_length", "Ignore length", OFFSET(ignore_length), AV_OPT_TYPE_BOOL, { .i64 = 0 }, 0, 1, DEC },
756 static const AVClass wav_demuxer_class = {
757 .class_name = "WAV demuxer",
758 .item_name = av_default_item_name,
759 .option = demux_options,
760 .version = LIBAVUTIL_VERSION_INT,
762 AVInputFormat ff_wav_demuxer = {
764 .long_name = NULL_IF_CONFIG_SMALL("WAV / WAVE (Waveform Audio)"),
765 .priv_data_size = sizeof(WAVDemuxContext),
766 .read_probe = wav_probe,
767 .read_header = wav_read_header,
768 .read_packet = wav_read_packet,
769 .read_seek = wav_read_seek,
770 .flags = AVFMT_GENERIC_INDEX,
771 .codec_tag = (const AVCodecTag * const []) { ff_codec_wav_tags, 0 },
772 .priv_class = &wav_demuxer_class,
774 #endif /* CONFIG_WAV_DEMUXER */
776 #if CONFIG_W64_DEMUXER
777 static int w64_probe(AVProbeData *p)
779 if (p->buf_size <= 40)
781 if (!memcmp(p->buf, ff_w64_guid_riff, 16) &&
782 !memcmp(p->buf + 24, ff_w64_guid_wave, 16))
783 return AVPROBE_SCORE_MAX;
788 static int w64_read_header(AVFormatContext *s)
790 int64_t size, data_ofs = 0;
791 AVIOContext *pb = s->pb;
792 WAVDemuxContext *wav = s->priv_data;
797 avio_read(pb, guid, 16);
798 if (memcmp(guid, ff_w64_guid_riff, 16))
799 return AVERROR_INVALIDDATA;
801 /* riff + wave + fmt + sizes */
802 if (avio_rl64(pb) < 16 + 8 + 16 + 8 + 16 + 8)
803 return AVERROR_INVALIDDATA;
805 avio_read(pb, guid, 16);
806 if (memcmp(guid, ff_w64_guid_wave, 16)) {
807 av_log(s, AV_LOG_ERROR, "could not find wave guid\n");
808 return AVERROR_INVALIDDATA;
813 st = avformat_new_stream(s, NULL);
815 return AVERROR(ENOMEM);
817 while (!avio_feof(pb)) {
818 if (avio_read(pb, guid, 16) != 16)
820 size = avio_rl64(pb);
821 if (size <= 24 || INT64_MAX - size < avio_tell(pb))
822 return AVERROR_INVALIDDATA;
824 if (!memcmp(guid, ff_w64_guid_fmt, 16)) {
825 /* subtract chunk header size - normal wav file doesn't count it */
826 ret = ff_get_wav_header(s, pb, st->codecpar, size - 24, 0);
829 avio_skip(pb, FFALIGN(size, INT64_C(8)) - size);
831 avpriv_set_pts_info(st, 64, 1, st->codecpar->sample_rate);
832 } else if (!memcmp(guid, ff_w64_guid_fact, 16)) {
835 samples = avio_rl64(pb);
837 st->duration = samples;
838 avio_skip(pb, FFALIGN(size, INT64_C(8)) - 32);
839 } else if (!memcmp(guid, ff_w64_guid_data, 16)) {
840 wav->data_end = avio_tell(pb) + size - 24;
842 data_ofs = avio_tell(pb);
843 if (!(pb->seekable & AVIO_SEEKABLE_NORMAL))
846 avio_skip(pb, size - 24);
847 } else if (!memcmp(guid, ff_w64_guid_summarylist, 16)) {
848 int64_t start, end, cur;
849 uint32_t count, chunk_size, i;
851 start = avio_tell(pb);
852 end = start + FFALIGN(size, INT64_C(8)) - 24;
853 count = avio_rl32(pb);
855 for (i = 0; i < count; i++) {
856 char chunk_key[5], *value;
858 if (avio_feof(pb) || (cur = avio_tell(pb)) < 0 || cur > end - 8 /* = tag + size */)
862 avio_read(pb, chunk_key, 4);
863 chunk_size = avio_rl32(pb);
864 if (chunk_size == UINT32_MAX)
865 return AVERROR_INVALIDDATA;
867 value = av_mallocz(chunk_size + 1);
869 return AVERROR(ENOMEM);
871 ret = avio_get_str16le(pb, chunk_size, value, chunk_size);
872 avio_skip(pb, chunk_size - ret);
874 av_dict_set(&s->metadata, chunk_key, value, AV_DICT_DONT_STRDUP_VAL);
877 avio_skip(pb, end - avio_tell(pb));
879 av_log(s, AV_LOG_DEBUG, "unknown guid: "FF_PRI_GUID"\n", FF_ARG_GUID(guid));
880 avio_skip(pb, FFALIGN(size, INT64_C(8)) - 24);
887 ff_metadata_conv_ctx(s, NULL, wav_metadata_conv);
888 ff_metadata_conv_ctx(s, NULL, ff_riff_info_conv);
890 handle_stream_probing(st);
891 st->need_parsing = AVSTREAM_PARSE_FULL_RAW;
893 avio_seek(pb, data_ofs, SEEK_SET);
900 AVInputFormat ff_w64_demuxer = {
902 .long_name = NULL_IF_CONFIG_SMALL("Sony Wave64"),
903 .priv_data_size = sizeof(WAVDemuxContext),
904 .read_probe = w64_probe,
905 .read_header = w64_read_header,
906 .read_packet = wav_read_packet,
907 .read_seek = wav_read_seek,
908 .flags = AVFMT_GENERIC_INDEX,
909 .codec_tag = (const AVCodecTag * const []) { ff_codec_wav_tags, 0 },
911 #endif /* CONFIG_W64_DEMUXER */