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ffmpeg.wasm-core
Commit 9748f147 authored by Michael Niedermayer's avatar Michael Niedermayer
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Merge commit 'ef196bee' 

* commit 'ef196bee':
  mov: Refactor audio specific parsing in mov_parse_stsd_audio

Conflicts:
	libavformat/mov.c
Merged-by: 's avatarMichael Niedermayer <michaelni@gmx.at>
parents bc6370b6 ef196bee
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Showing with 90 additions and 80 deletions
libavformat/mov.c
View file @ 9748f147
......@@ -1382,102 +1382,49 @@ static void mov_parse_stsd_video(MOVContext *c, AVIOContext *pb,
}
}
int ff_mov_read_stsd_entries(MOVContext *c, AVIOContext *pb, int entries)
static void mov_parse_stsd_audio(MOVContext *c, AVIOContext *pb,
AVStream *st, MOVStreamContext *sc)
{
AVStream *st;
MOVStreamContext *sc;
int pseudo_stream_id;
if (c->fc->nb_streams < 1)
return 0;
st = c->fc->streams[c->fc->nb_streams-1];
sc = st->priv_data;
for (pseudo_stream_id = 0;
pseudo_stream_id < entries && !pb->eof_reached;
pseudo_stream_id++) {
//Parsing Sample description table
enum AVCodecID id;
int dref_id = 1;
MOVAtom a = { AV_RL32("stsd") };
int64_t start_pos = avio_tell(pb);
int64_t size = avio_rb32(pb); /* size */
uint32_t format = avio_rl32(pb); /* data format */
if (size >= 16) {
avio_rb32(pb); /* reserved */
avio_rb16(pb); /* reserved */
dref_id = avio_rb16(pb);
}else if (size <= 7){
av_log(c->fc, AV_LOG_ERROR, "invalid size %"PRId64" in stsd\n", size);
return AVERROR_INVALIDDATA;
}
if (st->codec->codec_tag &&
st->codec->codec_tag != format &&
(c->fc->video_codec_id ? ff_codec_get_id(ff_codec_movvideo_tags, format) != c->fc->video_codec_id
: st->codec->codec_tag != MKTAG('j','p','e','g'))
){
/* Multiple fourcc, we skip JPEG. This is not correct, we should
* export it as a separate AVStream but this needs a few changes
* in the MOV demuxer, patch welcome. */
av_log(c->fc, AV_LOG_WARNING, "multiple fourcc not supported\n");
avio_skip(pb, size - (avio_tell(pb) - start_pos));
continue;
}
/* we cannot demux concatenated h264 streams because of different extradata */
if (st->codec->codec_tag && st->codec->codec_tag == AV_RL32("avc1"))
av_log(c->fc, AV_LOG_WARNING, "Concatenated H.264 might not play corrently.\n");
sc->pseudo_stream_id = st->codec->codec_tag ? -1 : pseudo_stream_id;
sc->dref_id= dref_id;
id = mov_codec_id(st, format);
av_dlog(c->fc, "size=%"PRId64" 4CC= %c%c%c%c codec_type=%d\n", size,
(format >> 0) & 0xff, (format >> 8) & 0xff, (format >> 16) & 0xff,
(format >> 24) & 0xff, st->codec->codec_type);
if (st->codec->codec_type==AVMEDIA_TYPE_VIDEO) {
st->codec->codec_id = id;
mov_parse_stsd_video(c, pb, st, sc);
} else if (st->codec->codec_type==AVMEDIA_TYPE_AUDIO) {
int bits_per_sample, flags;
uint16_t version = avio_rb16(pb);
AVDictionaryEntry *compatible_brands = av_dict_get(c->fc->metadata, "compatible_brands", NULL, AV_DICT_MATCH_CASE);
st->codec->codec_id = id;
avio_rb16(pb); /* revision level */
avio_rb32(pb); /* vendor */
st->codec->channels = avio_rb16(pb); /* channel count */
av_dlog(c->fc, "audio channels %d\n", st->codec->channels);
st->codec->bits_per_coded_sample = avio_rb16(pb); /* sample size */
av_dlog(c->fc, "audio channels %d\n", st->codec->channels);
sc->audio_cid = avio_rb16(pb);
avio_rb16(pb); /* packet size = 0 */
st->codec->sample_rate = ((avio_rb32(pb) >> 16));
//Read QT version 1 fields. In version 0 these do not exist.
av_dlog(c->fc, "version =%d, isom =%d\n",version,c->isom);
// Read QT version 1 fields. In version 0 these do not exist.
av_dlog(c->fc, "version =%d, isom =%d\n", version, c->isom);
if (!c->isom ||
(compatible_brands && strstr(compatible_brands->value, "qt "))) {
if (version==1) {
if (version == 1) {
sc->samples_per_frame = avio_rb32(pb);
avio_rb32(pb); /* bytes per packet */
sc->bytes_per_frame = avio_rb32(pb);
avio_rb32(pb); /* bytes per sample */
} else if (version==2) {
} else if (version == 2) {
avio_rb32(pb); /* sizeof struct only */
st->codec->sample_rate = av_int2double(avio_rb64(pb)); /* float 64 */
st->codec->sample_rate = av_int2double(avio_rb64(pb));
st->codec->channels = avio_rb32(pb);
avio_rb32(pb); /* always 0x7F000000 */
st->codec->bits_per_coded_sample = avio_rb32(pb); /* bits per channel if sound is uncompressed */
st->codec->bits_per_coded_sample = avio_rb32(pb);
flags = avio_rb32(pb); /* lpcm format specific flag */
sc->bytes_per_frame = avio_rb32(pb); /* bytes per audio packet if constant */
sc->samples_per_frame = avio_rb32(pb); /* lpcm frames per audio packet if constant */
if (format == MKTAG('l','p','c','m'))
st->codec->codec_id = ff_mov_get_lpcm_codec_id(st->codec->bits_per_coded_sample, flags);
sc->bytes_per_frame = avio_rb32(pb);
sc->samples_per_frame = avio_rb32(pb);
if (st->codec->codec_tag == MKTAG('l','p','c','m'))
st->codec->codec_id =
ff_mov_get_lpcm_codec_id(st->codec->bits_per_coded_sample,
flags);
}
}
......@@ -1499,15 +1446,15 @@ int ff_mov_read_stsd_entries(MOVContext *c, AVIOContext *pb, int entries)
/* set values for old format before stsd version 1 appeared */
case AV_CODEC_ID_MACE3:
sc->samples_per_frame = 6;
sc->bytes_per_frame = 2*st->codec->channels;
sc->bytes_per_frame = 2 * st->codec->channels;
break;
case AV_CODEC_ID_MACE6:
sc->samples_per_frame = 6;
sc->bytes_per_frame = 1*st->codec->channels;
sc->bytes_per_frame = 1 * st->codec->channels;
break;
case AV_CODEC_ID_ADPCM_IMA_QT:
sc->samples_per_frame = 64;
sc->bytes_per_frame = 34*st->codec->channels;
sc->bytes_per_frame = 34 * st->codec->channels;
break;
case AV_CODEC_ID_GSM:
sc->samples_per_frame = 160;
......@@ -1522,6 +1469,69 @@ int ff_mov_read_stsd_entries(MOVContext *c, AVIOContext *pb, int entries)
st->codec->bits_per_coded_sample = bits_per_sample;
sc->sample_size = (bits_per_sample >> 3) * st->codec->channels;
}
}
int ff_mov_read_stsd_entries(MOVContext *c, AVIOContext *pb, int entries)
{
AVStream *st;
MOVStreamContext *sc;
int pseudo_stream_id;
if (c->fc->nb_streams < 1)
return 0;
st = c->fc->streams[c->fc->nb_streams-1];
sc = st->priv_data;
for (pseudo_stream_id = 0;
pseudo_stream_id < entries && !pb->eof_reached;
pseudo_stream_id++) {
//Parsing Sample description table
enum AVCodecID id;
int dref_id = 1;
MOVAtom a = { AV_RL32("stsd") };
int64_t start_pos = avio_tell(pb);
int64_t size = avio_rb32(pb); /* size */
uint32_t format = avio_rl32(pb); /* data format */
if (size >= 16) {
avio_rb32(pb); /* reserved */
avio_rb16(pb); /* reserved */
dref_id = avio_rb16(pb);
}else if (size <= 7){
av_log(c->fc, AV_LOG_ERROR, "invalid size %"PRId64" in stsd\n", size);
return AVERROR_INVALIDDATA;
}
if (st->codec->codec_tag &&
st->codec->codec_tag != format &&
(c->fc->video_codec_id ? ff_codec_get_id(ff_codec_movvideo_tags, format) != c->fc->video_codec_id
: st->codec->codec_tag != MKTAG('j','p','e','g'))
){
/* Multiple fourcc, we skip JPEG. This is not correct, we should
* export it as a separate AVStream but this needs a few changes
* in the MOV demuxer, patch welcome. */
av_log(c->fc, AV_LOG_WARNING, "multiple fourcc not supported\n");
avio_skip(pb, size - (avio_tell(pb) - start_pos));
continue;
}
/* we cannot demux concatenated h264 streams because of different extradata */
if (st->codec->codec_tag && st->codec->codec_tag == AV_RL32("avc1"))
av_log(c->fc, AV_LOG_WARNING, "Concatenated H.264 might not play corrently.\n");
sc->pseudo_stream_id = st->codec->codec_tag ? -1 : pseudo_stream_id;
sc->dref_id= dref_id;
id = mov_codec_id(st, format);
av_dlog(c->fc, "size=%"PRId64" 4CC= %c%c%c%c codec_type=%d\n", size,
(format >> 0) & 0xff, (format >> 8) & 0xff, (format >> 16) & 0xff,
(format >> 24) & 0xff, st->codec->codec_type);
if (st->codec->codec_type==AVMEDIA_TYPE_VIDEO) {
st->codec->codec_id = id;
mov_parse_stsd_video(c, pb, st, sc);
} else if (st->codec->codec_type==AVMEDIA_TYPE_AUDIO) {
st->codec->codec_id = id;
mov_parse_stsd_audio(c, pb, st, sc);
} else if (st->codec->codec_type==AVMEDIA_TYPE_SUBTITLE){
// ttxt stsd contains display flags, justification, background
// color, fonts, and default styles, so fake an atom to read it
......
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