virtualenv/FFmpeg
1
0
Fork 0
mirror of https://github.com/FFmpeg/FFmpeg.git synced 2024-12-28 20:53:54 +02:00
Code Issues Releases Activity

avformat/movenc: add muxing support for Dolby TrueHD streams

Browse Source 
Signed-off-by: James Almer <jamrial@gmail.com>
This commit is contained in:
James Almer 2019-08-01 00:54:53 -03:00
parent d1409fe952
commit 808a6717e0
2 changed files with 62 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

62
libavformat/movenc.c
View File

@ -771,6 +771,35 @@ static int mov_write_dops_tag(AVFormatContext *s, AVIOContext *pb, MOVTrack *tra
return update_size(pb, pos);
}
static int mov_write_dmlp_tag(AVFormatContext *s, AVIOContext *pb, MOVTrack *track)
{
int64_t pos = avio_tell(pb);
int length;
avio_wb32(pb, 0);
ffio_wfourcc(pb, "dmlp");
if (track->vos_len < 20) {
av_log(s, AV_LOG_ERROR,
"Cannot write moov atom before TrueHD packets."
" Set the delay_moov flag to fix this.\n");
return AVERROR(EINVAL);
}
length = (AV_RB16(track->vos_data) & 0xFFF) * 2;
if (length < 20 || length > track->vos_len)
return AVERROR_INVALIDDATA;
// Only TrueHD is supported
if (AV_RB32(track->vos_data + 4) != 0xF8726FBA)
return AVERROR_INVALIDDATA;
avio_wb32(pb, AV_RB32(track->vos_data + 8)); /* format_info */
avio_wb16(pb, AV_RB16(track->vos_data + 18) << 1); /* peak_data_rate */
avio_wb32(pb, 0); /* reserved */
return update_size(pb, pos);
}
static int mov_write_chan_tag(AVFormatContext *s, AVIOContext *pb, MOVTrack *track)
{
uint32_t layout_tag, bitmap;
@ -1100,10 +1129,14 @@ static int mov_write_audio_tag(AVFormatContext *s, AVIOContext *pb, MOVMuxContex
avio_wb16(pb, 0); /* packet size (= 0) */
if (track->par->codec_id == AV_CODEC_ID_OPUS)
avio_wb16(pb, 48000);
else if (track->par->codec_id == AV_CODEC_ID_TRUEHD)
avio_wb32(pb, track->par->sample_rate);
else
avio_wb16(pb, track->par->sample_rate <= UINT16_MAX ?
track->par->sample_rate : 0);
avio_wb16(pb, 0); /* Reserved */
if (track->par->codec_id != AV_CODEC_ID_TRUEHD)
avio_wb16(pb, 0); /* Reserved */
}
if (version == 1) { /* SoundDescription V1 extended info */
@ -1145,6 +1178,8 @@ static int mov_write_audio_tag(AVFormatContext *s, AVIOContext *pb, MOVMuxContex
ret = mov_write_dfla_tag(pb, track);
else if (track->par->codec_id == AV_CODEC_ID_OPUS)
ret = mov_write_dops_tag(s, pb, track);
else if (track->par->codec_id == AV_CODEC_ID_TRUEHD)
ret = mov_write_dmlp_tag(s, pb, track);
else if (track->vos_len > 0)
ret = mov_write_glbl_tag(pb, track);
@ -2456,6 +2491,7 @@ static int mov_write_stbl_tag(AVFormatContext *s, AVIOContext *pb, MOVMuxContext
return ret;
mov_write_stts_tag(pb, track);
if ((track->par->codec_type == AVMEDIA_TYPE_VIDEO ||
track->par->codec_id == AV_CODEC_ID_TRUEHD ||
track->par->codec_tag == MKTAG('r','t','p',' ')) &&
track->has_keyframes && track->has_keyframes < track->entry)
mov_write_stss_tag(pb, track, MOV_SYNC_SAMPLE);
@ -4963,6 +4999,25 @@ static void mov_parse_vc1_frame(AVPacket *pkt, MOVTrack *trk)
}
}
static void mov_parse_truehd_frame(AVPacket *pkt, MOVTrack *trk)
{
int length;
if (pkt->size < 8)
return;
length = (AV_RB16(pkt->data) & 0xFFF) * 2;
if (length < 8 || length > pkt->size)
return;
if (AV_RB32(pkt->data + 4) == 0xF8726FBA) {
trk->cluster[trk->entry].flags |= MOV_SYNC_SAMPLE;
trk->has_keyframes++;
}
return;
}
static int mov_flush_fragment_interleaving(AVFormatContext *s, MOVTrack *track)
{
MOVMuxContext *mov = s->priv_data;
@ -5400,6 +5455,7 @@ int ff_mov_write_packet(AVFormatContext *s, AVPacket *pkt)
}
if ((par->codec_id == AV_CODEC_ID_DNXHD ||
par->codec_id == AV_CODEC_ID_TRUEHD ||
par->codec_id == AV_CODEC_ID_AC3) && !trk->vos_len) {
/* copy frame to create needed atoms */
trk->vos_len = size;
@ -5509,6 +5565,8 @@ int ff_mov_write_packet(AVFormatContext *s, AVPacket *pkt)
if (par->codec_id == AV_CODEC_ID_VC1) {
mov_parse_vc1_frame(pkt, trk);
} else if (par->codec_id == AV_CODEC_ID_TRUEHD) {
mov_parse_truehd_frame(pkt, trk);
} else if (pkt->flags & AV_PKT_FLAG_KEY) {
if (mov->mode == MODE_MOV && par->codec_id == AV_CODEC_ID_MPEG2VIDEO &&
trk->entry > 0) { // force sync sample for the first key frame
@ -6321,6 +6379,7 @@ static int mov_init(AVFormatContext *s)
}
}
if (track->par->codec_id == AV_CODEC_ID_FLAC ||
track->par->codec_id == AV_CODEC_ID_TRUEHD ||
track->par->codec_id == AV_CODEC_ID_OPUS) {
if (track->mode != MODE_MP4) {
av_log(s, AV_LOG_ERROR, "%s only supported in MP4.\n", avcodec_get_name(track->par->codec_id));
@ -6802,6 +6861,7 @@ const AVCodecTag codec_mp4_tags[] = {
{ AV_CODEC_ID_AC3 , MKTAG('a', 'c', '-', '3') },
{ AV_CODEC_ID_EAC3 , MKTAG('e', 'c', '-', '3') },
{ AV_CODEC_ID_DTS , MKTAG('m', 'p', '4', 'a') },
{ AV_CODEC_ID_TRUEHD , MKTAG('m', 'l', 'p', 'a') },
{ AV_CODEC_ID_FLAC , MKTAG('f', 'L', 'a', 'C') },
{ AV_CODEC_ID_OPUS , MKTAG('O', 'p', 'u', 's') },
{ AV_CODEC_ID_VORBIS , MKTAG('m', 'p', '4', 'a') },

2
libavformat/version.h
View File

@ -33,7 +33,7 @@
// Also please add any ticket numbers that you believe might be affected here
#define LIBAVFORMAT_VERSION_MAJOR 58
#define LIBAVFORMAT_VERSION_MINOR 31
#define LIBAVFORMAT_VERSION_MICRO 103
#define LIBAVFORMAT_VERSION_MICRO 104
#define LIBAVFORMAT_VERSION_INT AV_VERSION_INT(LIBAVFORMAT_VERSION_MAJOR, \
LIBAVFORMAT_VERSION_MINOR, \