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Diffstat (limited to 'libavformat/wavdec.c')
-rw-r--r--libavformat/wavdec.c287
1 files changed, 234 insertions, 53 deletions
diff --git a/libavformat/wavdec.c b/libavformat/wavdec.c
index c9f7abbbcf..782fa6416d 100644
--- a/libavformat/wavdec.c
+++ b/libavformat/wavdec.c
@@ -6,20 +6,20 @@
* RF64 demuxer
* Copyright (c) 2009 Daniel Verkamp
*
- * This file is part of Libav.
+ * This file is part of FFmpeg.
*
- * Libav is free software; you can redistribute it and/or
+ * FFmpeg is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
- * Libav is distributed in the hope that it will be useful,
+ * FFmpeg is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
- * License along with Libav; if not, write to the Free Software
+ * License along with FFmpeg; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
@@ -33,12 +33,24 @@
#include "avio_internal.h"
#include "pcm.h"
#include "riff.h"
+#include "w64.h"
#include "avio.h"
#include "metadata.h"
+#include "spdif.h"
typedef struct WAVDemuxContext {
+ const AVClass *class;
int64_t data_end;
int w64;
+ int64_t smv_data_ofs;
+ int smv_block_size;
+ int smv_frames_per_jpeg;
+ int smv_block;
+ int smv_last_stream;
+ int smv_eof;
+ int audio_eof;
+ int ignore_length;
+ int spdif;
} WAVDemuxContext;
@@ -57,7 +69,7 @@ static int64_t find_tag(AVIOContext *pb, uint32_t tag1)
int64_t size;
for (;;) {
- if (pb->eof_reached)
+ if (url_feof(pb))
return -1;
size = next_tag(pb, &tag);
if (tag == tag1)
@@ -87,6 +99,14 @@ static int wav_probe(AVProbeData *p)
return 0;
}
+static void handle_stream_probing(AVStream *st)
+{
+ if (st->codec->codec_id == AV_CODEC_ID_PCM_S16LE) {
+ st->request_probe = AVPROBE_SCORE_MAX/2;
+ st->probe_packets = FFMIN(st->probe_packets, 4);
+ }
+}
+
static int wav_parse_fmt_tag(AVFormatContext *s, int64_t size, AVStream **st)
{
AVIOContext *pb = s->pb;
@@ -100,7 +120,9 @@ static int wav_parse_fmt_tag(AVFormatContext *s, int64_t size, AVStream **st)
ret = ff_get_wav_header(pb, (*st)->codec, size);
if (ret < 0)
return ret;
- (*st)->need_parsing = AVSTREAM_PARSE_FULL;
+ handle_stream_probing(*st);
+
+ (*st)->need_parsing = AVSTREAM_PARSE_FULL_RAW;
avpriv_set_pts_info(*st, 64, 1, (*st)->codec->sample_rate);
@@ -158,7 +180,7 @@ static int wav_parse_bext_tag(AVFormatContext *s, int64_t size)
} else {
/* extended UMID */
snprintf(temp, sizeof(temp), "0x%016"PRIX64"%016"PRIX64"%016"PRIX64"%016"PRIX64
- "0x%016"PRIX64"%016"PRIX64"%016"PRIX64"%016"PRIX64,
+ "%016"PRIX64"%016"PRIX64"%016"PRIX64"%016"PRIX64,
umid_parts[0], umid_parts[1], umid_parts[2], umid_parts[3],
umid_parts[4], umid_parts[5], umid_parts[6], umid_parts[7]);
}
@@ -211,6 +233,8 @@ static int wav_read_header(AVFormatContext *s)
int ret, got_fmt = 0;
int64_t next_tag_ofs, data_ofs = -1;
+ wav->smv_data_ofs = -1;
+
/* check RIFF header */
tag = avio_rl32(pb);
@@ -226,7 +250,7 @@ static int wav_read_header(AVFormatContext *s)
if (avio_rl32(pb) != MKTAG('d', 's', '6', '4'))
return -1;
size = avio_rl32(pb);
- if (size < 16)
+ if (size < 24)
return -1;
avio_rl64(pb); /* RIFF size */
data_size = avio_rl64(pb);
@@ -237,20 +261,22 @@ static int wav_read_header(AVFormatContext *s)
data_size, sample_count);
return AVERROR_INVALIDDATA;
}
- avio_skip(pb, size - 16); /* skip rest of ds64 chunk */
+ avio_skip(pb, size - 24); /* skip rest of ds64 chunk */
+
}
for (;;) {
+ AVStream *vst;
size = next_tag(pb, &tag);
next_tag_ofs = avio_tell(pb) + size;
- if (pb->eof_reached)
+ if (url_feof(pb))
break;
switch (tag) {
case MKTAG('f', 'm', 't', ' '):
/* only parse the first 'fmt ' tag found */
- if (!got_fmt && (ret = wav_parse_fmt_tag(s, size, &st) < 0)) {
+ if (!got_fmt && (ret = wav_parse_fmt_tag(s, size, &st)) < 0) {
return ret;
} else if (got_fmt)
av_log(s, AV_LOG_WARNING, "found more than one 'fmt ' tag\n");
@@ -286,15 +312,44 @@ static int wav_read_header(AVFormatContext *s)
if ((ret = wav_parse_bext_tag(s, size)) < 0)
return ret;
break;
+ case MKTAG('S','M','V','0'):
+ if (!got_fmt) {
+ av_log(s, AV_LOG_ERROR, "found no 'fmt ' tag before the 'SMV0' tag\n");
+ return AVERROR_INVALIDDATA;
+ }
+ // SMV file, a wav file with video appended.
+ if (size != MKTAG('0','2','0','0')) {
+ av_log(s, AV_LOG_ERROR, "Unknown SMV version found\n");
+ goto break_loop;
+ }
+ av_log(s, AV_LOG_DEBUG, "Found SMV data\n");
+ vst = avformat_new_stream(s, NULL);
+ if (!vst)
+ return AVERROR(ENOMEM);
+ avio_r8(pb);
+ vst->id = 1;
+ vst->codec->codec_type = AVMEDIA_TYPE_VIDEO;
+ vst->codec->codec_id = AV_CODEC_ID_MJPEG;
+ vst->codec->width = avio_rl24(pb);
+ vst->codec->height = avio_rl24(pb);
+ size = avio_rl24(pb);
+ wav->smv_data_ofs = avio_tell(pb) + (size - 5) * 3;
+ avio_rl24(pb);
+ wav->smv_block_size = avio_rl24(pb);
+ avpriv_set_pts_info(vst, 32, 1, avio_rl24(pb));
+ vst->duration = avio_rl24(pb);
+ avio_rl24(pb);
+ avio_rl24(pb);
+ wav->smv_frames_per_jpeg = avio_rl24(pb);
+ goto break_loop;
case MKTAG('L', 'I', 'S', 'T'):
if (size < 4) {
- av_log(s, AV_LOG_ERROR, "too short LIST");
+ av_log(s, AV_LOG_ERROR, "too short LIST tag\n");
return AVERROR_INVALIDDATA;
}
switch (avio_rl32(pb)) {
case MKTAG('I', 'N', 'F', 'O'):
- if ((ret = ff_read_riff_info(s, size - 4)) < 0)
- return ret;
+ ff_read_riff_info(s, size - 4);
}
break;
}
@@ -313,7 +368,7 @@ break_loop:
avio_seek(pb, data_ofs, SEEK_SET);
- if (!sample_count && st->codec->channels && av_get_bits_per_sample(st->codec->codec_id))
+ if (!sample_count && st->codec->channels && av_get_bits_per_sample(st->codec->codec_id) && wav->data_end <= avio_size(pb))
sample_count = (data_size<<3) / (st->codec->channels * (uint64_t)av_get_bits_per_sample(st->codec->codec_id));
if (sample_count)
st->duration = sample_count;
@@ -332,7 +387,7 @@ static int64_t find_guid(AVIOContext *pb, const uint8_t guid1[16])
uint8_t guid[16];
int64_t size;
- while (!pb->eof_reached) {
+ while (!url_feof(pb)) {
avio_read(pb, guid, 16);
size = avio_rl64(pb);
if (size <= 24)
@@ -344,9 +399,6 @@ static int64_t find_guid(AVIOContext *pb, const uint8_t guid1[16])
return -1;
}
-static const uint8_t guid_data[16] = { 'd', 'a', 't', 'a',
- 0xF3, 0xAC, 0xD3, 0x11, 0x8C, 0xD1, 0x00, 0xC0, 0x4F, 0x8E, 0xDB, 0x8A };
-
#define MAX_SIZE 4096
static int wav_read_packet(AVFormatContext *s,
@@ -357,16 +409,76 @@ static int wav_read_packet(AVFormatContext *s,
AVStream *st;
WAVDemuxContext *wav = s->priv_data;
+ if (CONFIG_SPDIF_DEMUXER && wav->spdif == 0 &&
+ s->streams[0]->codec->codec_tag == 1) {
+ enum AVCodecID codec;
+ ret = ff_spdif_probe(s->pb->buffer, s->pb->buf_end - s->pb->buffer,
+ &codec);
+ if (ret > AVPROBE_SCORE_MAX / 2) {
+ s->streams[0]->codec->codec_id = codec;
+ wav->spdif = 1;
+ } else {
+ wav->spdif = -1;
+ }
+ }
+ if (CONFIG_SPDIF_DEMUXER && wav->spdif == 1)
+ return ff_spdif_read_packet(s, pkt);
+
+ if (wav->smv_data_ofs > 0) {
+ int64_t audio_dts, video_dts;
+smv_retry:
+ audio_dts = s->streams[0]->cur_dts;
+ video_dts = s->streams[1]->cur_dts;
+ if (audio_dts != AV_NOPTS_VALUE && video_dts != AV_NOPTS_VALUE) {
+ audio_dts = av_rescale_q(audio_dts, s->streams[0]->time_base, AV_TIME_BASE_Q);
+ video_dts = av_rescale_q(video_dts, s->streams[1]->time_base, AV_TIME_BASE_Q);
+ wav->smv_last_stream = video_dts >= audio_dts;
+ }
+ wav->smv_last_stream = !wav->smv_last_stream;
+ wav->smv_last_stream |= wav->audio_eof;
+ wav->smv_last_stream &= !wav->smv_eof;
+ if (wav->smv_last_stream) {
+ uint64_t old_pos = avio_tell(s->pb);
+ uint64_t new_pos = wav->smv_data_ofs +
+ wav->smv_block * wav->smv_block_size;
+ if (avio_seek(s->pb, new_pos, SEEK_SET) < 0) {
+ ret = AVERROR_EOF;
+ goto smv_out;
+ }
+ size = avio_rl24(s->pb);
+ ret = av_get_packet(s->pb, pkt, size);
+ if (ret < 0)
+ goto smv_out;
+ pkt->pos -= 3;
+ pkt->pts = wav->smv_block * wav->smv_frames_per_jpeg;
+ wav->smv_block++;
+ pkt->stream_index = 1;
+smv_out:
+ avio_seek(s->pb, old_pos, SEEK_SET);
+ if (ret == AVERROR_EOF) {
+ wav->smv_eof = 1;
+ goto smv_retry;
+ }
+ return ret;
+ }
+ }
+
st = s->streams[0];
left = wav->data_end - avio_tell(s->pb);
+ if (wav->ignore_length)
+ left= INT_MAX;
if (left <= 0){
if (CONFIG_W64_DEMUXER && wav->w64)
- left = find_guid(s->pb, guid_data) - 24;
+ left = find_guid(s->pb, ff_w64_guid_data) - 24;
else
left = find_tag(s->pb, MKTAG('d', 'a', 't', 'a'));
- if (left < 0)
+ if (left < 0) {
+ wav->audio_eof = 1;
+ if (wav->smv_data_ofs > 0 && !wav->smv_eof)
+ goto smv_retry;
return AVERROR_EOF;
+ }
wav->data_end= avio_tell(s->pb) + left;
}
@@ -388,7 +500,18 @@ static int wav_read_packet(AVFormatContext *s,
static int wav_read_seek(AVFormatContext *s,
int stream_index, int64_t timestamp, int flags)
{
+ WAVDemuxContext *wav = s->priv_data;
AVStream *st;
+ wav->smv_eof = 0;
+ wav->audio_eof = 0;
+ if (wav->smv_data_ofs > 0) {
+ int64_t smv_timestamp = timestamp;
+ if (stream_index == 0)
+ smv_timestamp = av_rescale_q(timestamp, s->streams[0]->time_base, s->streams[1]->time_base);
+ else
+ timestamp = av_rescale_q(smv_timestamp, s->streams[1]->time_base, s->streams[0]->time_base);
+ wav->smv_block = smv_timestamp / wav->smv_frames_per_jpeg;
+ }
st = s->streams[0];
switch (st->codec->codec_id) {
@@ -404,6 +527,19 @@ static int wav_read_seek(AVFormatContext *s,
return ff_pcm_read_seek(s, stream_index, timestamp, flags);
}
+#define OFFSET(x) offsetof(WAVDemuxContext, x)
+#define DEC AV_OPT_FLAG_DECODING_PARAM
+static const AVOption demux_options[] = {
+ { "ignore_length", "Ignore length", OFFSET(ignore_length), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, 1, DEC },
+ { NULL },
+};
+
+static const AVClass wav_demuxer_class = {
+ .class_name = "WAV demuxer",
+ .item_name = av_default_item_name,
+ .option = demux_options,
+ .version = LIBAVUTIL_VERSION_INT,
+};
AVInputFormat ff_wav_demuxer = {
.name = "wav",
.long_name = NULL_IF_CONFIG_SMALL("WAV / WAVE (Waveform Audio)"),
@@ -414,26 +550,18 @@ AVInputFormat ff_wav_demuxer = {
.read_seek = wav_read_seek,
.flags = AVFMT_GENERIC_INDEX,
.codec_tag = (const AVCodecTag* const []){ ff_codec_wav_tags, 0 },
+ .priv_class = &wav_demuxer_class,
};
#endif /* CONFIG_WAV_DEMUXER */
#if CONFIG_W64_DEMUXER
-static const uint8_t guid_riff[16] = { 'r', 'i', 'f', 'f',
- 0x2E, 0x91, 0xCF, 0x11, 0xA5, 0xD6, 0x28, 0xDB, 0x04, 0xC1, 0x00, 0x00 };
-
-static const uint8_t guid_wave[16] = { 'w', 'a', 'v', 'e',
- 0xF3, 0xAC, 0xD3, 0x11, 0x8C, 0xD1, 0x00, 0xC0, 0x4F, 0x8E, 0xDB, 0x8A };
-
-static const uint8_t guid_fmt [16] = { 'f', 'm', 't', ' ',
- 0xF3, 0xAC, 0xD3, 0x11, 0x8C, 0xD1, 0x00, 0xC0, 0x4F, 0x8E, 0xDB, 0x8A };
-
static int w64_probe(AVProbeData *p)
{
if (p->buf_size <= 40)
return 0;
- if (!memcmp(p->buf, guid_riff, 16) &&
- !memcmp(p->buf + 24, guid_wave, 16))
+ if (!memcmp(p->buf, ff_w64_guid_riff, 16) &&
+ !memcmp(p->buf + 24, ff_w64_guid_wave, 16))
return AVPROBE_SCORE_MAX;
else
return 0;
@@ -441,7 +569,7 @@ static int w64_probe(AVProbeData *p)
static int w64_read_header(AVFormatContext *s)
{
- int64_t size;
+ int64_t size, data_ofs = 0;
AVIOContext *pb = s->pb;
WAVDemuxContext *wav = s->priv_data;
AVStream *st;
@@ -449,45 +577,98 @@ static int w64_read_header(AVFormatContext *s)
int ret;
avio_read(pb, guid, 16);
- if (memcmp(guid, guid_riff, 16))
+ if (memcmp(guid, ff_w64_guid_riff, 16))
return -1;
if (avio_rl64(pb) < 16 + 8 + 16 + 8 + 16 + 8) /* riff + wave + fmt + sizes */
return -1;
avio_read(pb, guid, 16);
- if (memcmp(guid, guid_wave, 16)) {
+ if (memcmp(guid, ff_w64_guid_wave, 16)) {
av_log(s, AV_LOG_ERROR, "could not find wave guid\n");
return -1;
}
- size = find_guid(pb, guid_fmt);
- if (size < 0) {
- av_log(s, AV_LOG_ERROR, "could not find fmt guid\n");
- return -1;
- }
+ wav->w64 = 1;
st = avformat_new_stream(s, NULL);
if (!st)
return AVERROR(ENOMEM);
- /* subtract chunk header size - normal wav file doesn't count it */
- ret = ff_get_wav_header(pb, st->codec, size - 24);
- if (ret < 0)
- return ret;
- avio_skip(pb, FFALIGN(size, INT64_C(8)) - size);
+ while (!url_feof(pb)) {
+ if (avio_read(pb, guid, 16) != 16)
+ break;
+ size = avio_rl64(pb);
+ if (size <= 24 || INT64_MAX - size < avio_tell(pb))
+ return AVERROR_INVALIDDATA;
+
+ if (!memcmp(guid, ff_w64_guid_fmt, 16)) {
+ /* subtract chunk header size - normal wav file doesn't count it */
+ ret = ff_get_wav_header(pb, st->codec, size - 24);
+ if (ret < 0)
+ return ret;
+ avio_skip(pb, FFALIGN(size, INT64_C(8)) - size);
- st->need_parsing = AVSTREAM_PARSE_FULL;
+ avpriv_set_pts_info(st, 64, 1, st->codec->sample_rate);
+ } else if (!memcmp(guid, ff_w64_guid_fact, 16)) {
+ int64_t samples;
- avpriv_set_pts_info(st, 64, 1, st->codec->sample_rate);
+ samples = avio_rl64(pb);
+ if (samples > 0)
+ st->duration = samples;
+ } else if (!memcmp(guid, ff_w64_guid_data, 16)) {
+ wav->data_end = avio_tell(pb) + size - 24;
- size = find_guid(pb, guid_data);
- if (size < 0) {
- av_log(s, AV_LOG_ERROR, "could not find data guid\n");
- return -1;
+ data_ofs = avio_tell(pb);
+ if (!pb->seekable)
+ break;
+
+ avio_skip(pb, size - 24);
+ } else if (!memcmp(guid, ff_w64_guid_summarylist, 16)) {
+ int64_t start, end, cur;
+ uint32_t count, chunk_size, i;
+
+ start = avio_tell(pb);
+ end = start + size;
+ count = avio_rl32(pb);
+
+ for (i = 0; i < count; i++) {
+ char chunk_key[5], *value;
+
+ if (url_feof(pb) || (cur = avio_tell(pb)) < 0 || cur > end - 8 /* = tag + size */)
+ break;
+
+ chunk_key[4] = 0;
+ avio_read(pb, chunk_key, 4);
+ chunk_size = avio_rl32(pb);
+
+ value = av_mallocz(chunk_size + 1);
+ if (!value)
+ return AVERROR(ENOMEM);
+
+ ret = avio_get_str16le(pb, chunk_size, value, chunk_size);
+ avio_skip(pb, chunk_size - ret);
+
+ av_dict_set(&s->metadata, chunk_key, value, AV_DICT_DONT_STRDUP_VAL);
+ }
+
+ avio_skip(pb, end - avio_tell(pb));
+ } else {
+ av_log(s, AV_LOG_DEBUG, "unknown guid: "FF_PRI_GUID"\n", FF_ARG_GUID(guid));
+ avio_skip(pb, size - 24);
+ }
}
- wav->data_end = avio_tell(pb) + size - 24;
- wav->w64 = 1;
+
+ if (!data_ofs)
+ return AVERROR_EOF;
+
+ ff_metadata_conv_ctx(s, NULL, wav_metadata_conv);
+ ff_metadata_conv_ctx(s, NULL, ff_riff_info_conv);
+
+ handle_stream_probing(st);
+ st->need_parsing = AVSTREAM_PARSE_FULL_RAW;
+
+ avio_seek(pb, data_ofs, SEEK_SET);
return 0;
}
generated by cgit v1.2.3 (git 2.39.1) at 2024-07-09 19:44:55 +0000