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Merge commit 'ee37620b6ae4783cda637408422044b2d14a688c' 

* commit 'ee37620b6ae4783cda637408422044b2d14a688c':
  movenc: Add a flag for indicating a discontinuous fragment

Conflicts:
	libavformat/movenc.c

Merged-by: Michael Niedermayer <michaelni@gmx.at>
This commit is contained in:
Michael Niedermayer 2014-11-26 11:27:17 +01:00
parent 5f30522894 ee37620b6a
commit b78074fd13
2 changed files with 30 additions and 6 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

24
libavformat/movenc.c
View File

@ -65,6 +65,7 @@ static const AVOption options[] = {
{ "disable_chpl", "Disable Nero chapter atom", 0, AV_OPT_TYPE_CONST, {.i64 = FF_MOV_FLAG_DISABLE_CHPL}, INT_MIN, INT_MAX, AV_OPT_FLAG_ENCODING_PARAM, "movflags" },
{ "default_base_moof", "Set the default-base-is-moof flag in tfhd atoms", 0, AV_OPT_TYPE_CONST, {.i64 = FF_MOV_FLAG_DEFAULT_BASE_MOOF}, INT_MIN, INT_MAX, AV_OPT_FLAG_ENCODING_PARAM, "movflags" },
{ "dash", "Write DASH compatible fragmented MP4", 0, AV_OPT_TYPE_CONST, {.i64 = FF_MOV_FLAG_DASH}, INT_MIN, INT_MAX, AV_OPT_FLAG_ENCODING_PARAM, "movflags" },
{ "frag_discont", "Signal that the next fragment is discontinuous from earlier ones", 0, AV_OPT_TYPE_CONST, {.i64 = FF_MOV_FLAG_FRAG_DISCONT}, INT_MIN, INT_MAX, AV_OPT_FLAG_ENCODING_PARAM, "movflags" },
FF_RTP_FLAG_OPTS(MOVMuxContext, rtp_flags),
{ "skip_iods", "Skip writing iods atom.", offsetof(MOVMuxContext, iods_skip), AV_OPT_TYPE_INT, {.i64 = 1}, 0, 1, AV_OPT_FLAG_ENCODING_PARAM},
{ "iods_audio_profile", "iods audio profile atom.", offsetof(MOVMuxContext, iods_audio_profile), AV_OPT_TYPE_INT, {.i64 = -1}, -1, 255, AV_OPT_FLAG_ENCODING_PARAM},
@ -4043,11 +4044,19 @@ int ff_mov_write_packet(AVFormatContext *s, AVPacket *pkt)
trk->cluster[trk->entry].entries = samples_in_chunk;
trk->cluster[trk->entry].dts = pkt->dts;
if (!trk->entry && trk->start_dts != AV_NOPTS_VALUE) {
if (!trk->frag_discont) {
/* First packet of a new fragment. We already wrote the duration
* of the last packet of the previous fragment based on track_duration,
* which might not exactly match our dts. Therefore adjust the dts
* of this packet to be what the previous packets duration implies. */
trk->cluster[trk->entry].dts = trk->start_dts + trk->track_duration;
} else {
/* New fragment, but discontinuous from previous fragments.
* Pretend the duration sum of the earlier fragments is
* pkt->dts - trk->start_dts. */
trk->frag_start = pkt->dts - trk->start_dts;
trk->frag_discont = 0;
}
}
if (!trk->entry && trk->start_dts == AV_NOPTS_VALUE && !mov->use_editlist &&
@ -4061,7 +4070,13 @@ int ff_mov_write_packet(AVFormatContext *s, AVPacket *pkt)
}
if (trk->start_dts == AV_NOPTS_VALUE) {
trk->start_dts = pkt->dts;
if (pkt->dts && mov->flags & FF_MOV_FLAG_EMPTY_MOOV)
if (trk->frag_discont) {
/* Pretend the whole stream started at dts=0, with earlier framgents
* already written, with a duration summing up to pkt->dts. */
trk->frag_start = pkt->dts;
trk->start_dts = 0;
trk->frag_discont = 0;
} else if (pkt->dts && mov->flags & FF_MOV_FLAG_EMPTY_MOOV)
av_log(s, AV_LOG_WARNING,
"Track %d starts with a nonzero dts %"PRId64". This "
"currently isn't handled correctly in combination with "
@ -4118,6 +4133,13 @@ static int mov_write_single_packet(AVFormatContext *s, AVPacket *pkt)
if (!pkt->size)
return 0; /* Discard 0 sized packets */
if (mov->flags & FF_MOV_FLAG_FRAG_DISCONT) {
int i;
for (i = 0; i < s->nb_streams; i++)
mov->tracks[i].frag_discont = 1;
mov->flags &= ~FF_MOV_FLAG_FRAG_DISCONT;
}
if (trk->entry && pkt->stream_index < s->nb_streams)
frag_duration = av_rescale_q(pkt->dts - trk->cluster[0].dts,
s->streams[pkt->stream_index]->time_base,

2
libavformat/movenc.h
View File

@ -129,6 +129,7 @@ typedef struct MOVTrack {
AVIOContext *mdat_buf;
int64_t data_offset;
int64_t frag_start;
int frag_discont;
int nb_frag_info;
MOVFragmentInfo *frag_info;
@ -198,6 +199,7 @@ typedef struct MOVMuxContext {
#define FF_MOV_FLAG_DISABLE_CHPL (1 << 9)
#define FF_MOV_FLAG_DEFAULT_BASE_MOOF (1 << 10)
#define FF_MOV_FLAG_DASH (1 << 11)
#define FF_MOV_FLAG_FRAG_DISCONT (1 << 12)
int ff_mov_write_packet(AVFormatContext *s, AVPacket *pkt);