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ffmpeg.wasm-core
Commit f38e2bcb authored by Michael Niedermayer's avatar Michael Niedermayer
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Merge commit '847bf598' 

* commit '847bf598':
  movenc: Add an option for delaying writing the moov with empty_moov

Conflicts:
	libavformat/movenc.c
	libavformat/version.h
Merged-by: 's avatarMichael Niedermayer <michaelni@gmx.at>
parents 504267fb 847bf598
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Showing with 61 additions and 15 deletions
libavformat/movenc.c
View file @ f38e2bcb
......@@ -66,6 +66,7 @@ static const AVOption options[] = {
{ "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" },
{ "delay_moov", "Delay writing the initial moov until the first fragment is cut, or until the first fragment flush", 0, AV_OPT_TYPE_CONST, {.i64 = FF_MOV_FLAG_DELAY_MOOV}, 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},
......@@ -1801,7 +1802,7 @@ static int mov_write_stbl_tag(AVIOContext *pb, MOVTrack *track)
if (track->mode == MODE_MOV && track->flags & MOV_TRACK_STPS)
mov_write_stss_tag(pb, track, MOV_PARTIAL_SYNC_SAMPLE);
if (track->enc->codec_type == AVMEDIA_TYPE_VIDEO &&
track->flags & MOV_TRACK_CTTS)
track->flags & MOV_TRACK_CTTS && track->entry)
mov_write_ctts_tag(pb, track);
mov_write_stsc_tag(pb, track);
mov_write_stsz_tag(pb, track);
......@@ -2404,6 +2405,12 @@ static int mov_write_trak_tag(AVIOContext *pb, MOVMuxContext *mov,
MOVTrack *track, AVStream *st)
{
int64_t pos = avio_tell(pb);
int entry_backup = track->entry;
/* If we want to have an empty moov, but some samples already have been
* buffered (delay_moov), pretend that no samples have been written yet. */
if (mov->flags & FF_MOV_FLAG_EMPTY_MOOV)
track->entry = 0;
avio_wb32(pb, 0); /* size */
ffio_wfourcc(pb, "trak");
mov_write_tkhd_tag(pb, mov, track, st);
......@@ -2437,6 +2444,7 @@ static int mov_write_trak_tag(AVIOContext *pb, MOVMuxContext *mov,
}
}
mov_write_track_udta_tag(pb, mov, st);
track->entry = entry_backup;
return update_size(pb, pos);
}
......@@ -2511,6 +2519,12 @@ static int mov_write_mvhd_tag(AVIOContext *pb, MOVMuxContext *mov)
max_track_id = mov->tracks[i].track_id;
}
}
/* If using delay_moov, make sure the output is the same as if no
* samples had been written yet. */
if (mov->flags & FF_MOV_FLAG_EMPTY_MOOV) {
max_track_len = 0;
max_track_id = 1;
}
version = max_track_len < UINT32_MAX ? 0 : 1;
(version == 1) ? avio_wb32(pb, 120) : avio_wb32(pb, 108); /* size */
......@@ -3865,8 +3879,18 @@ static int mov_flush_fragment(AVFormatContext *s)
for (i = 0; i < mov->nb_streams; i++)
mov->tracks[i].data_offset = pos + moov_size + 8;
if (mov->flags & FF_MOV_FLAG_DELAY_MOOV)
mov_write_identification(s->pb, s);
mov_write_moov_tag(s->pb, mov, s);
if (mov->flags & FF_MOV_FLAG_DELAY_MOOV) {
if (mov->flags & FF_MOV_FLAG_FASTSTART)
mov->reserved_moov_pos = avio_tell(s->pb);
avio_flush(s->pb);
mov->fragments++;
return 0;
}
buf_size = avio_close_dyn_buf(mov->mdat_buf, &buf);
mov->mdat_buf = NULL;
avio_wb32(s->pb, buf_size + 8);
......@@ -3949,6 +3973,19 @@ static int mov_flush_fragment(AVFormatContext *s)
return 0;
}
static int mov_auto_flush_fragment(AVFormatContext *s)
{
MOVMuxContext *mov = s->priv_data;
int ret = mov_flush_fragment(s);
if (ret < 0)
return ret;
// If using delay_moov, the first flush only wrote the moov,
// not the actual moof+mdat pair, thus flush once again.
if (mov->fragments == 1 && mov->flags & FF_MOV_FLAG_DELAY_MOOV)
ret = mov_flush_fragment(s);
return ret;
}
int ff_mov_write_packet(AVFormatContext *s, AVPacket *pkt)
{
MOVMuxContext *mov = s->priv_data;
......@@ -3976,7 +4013,7 @@ int ff_mov_write_packet(AVFormatContext *s, AVPacket *pkt)
}
if (mov->flags & FF_MOV_FLAG_FRAGMENT) {
int ret;
if (mov->fragments > 0) {
if (mov->fragments > 0 || mov->flags & FF_MOV_FLAG_EMPTY_MOOV) {
if (!trk->mdat_buf) {
if ((ret = avio_open_dyn_buf(&trk->mdat_buf)) < 0)
return ret;
......@@ -4126,11 +4163,12 @@ int ff_mov_write_packet(AVFormatContext *s, AVPacket *pkt)
trk->frag_start = pkt->dts;
trk->start_dts = 0;
trk->frag_discont = 0;
} else if (pkt->dts && mov->flags & FF_MOV_FLAG_EMPTY_MOOV)
} else if (mov->fragments >= 1)
av_log(s, AV_LOG_WARNING,
"Track %d starts with a nonzero dts %"PRId64". This "
"currently isn't handled correctly in combination with "
"empty_moov.\n", pkt->stream_index, pkt->dts);
"Track %d starts with a nonzero dts %"PRId64", while the moov "
"already has been written. Set the delay_moov flag to handle "
"this case.\n",
pkt->stream_index, pkt->dts);
}
trk->track_duration = pkt->dts - trk->start_dts + pkt->duration;
trk->last_sample_is_subtitle_end = 0;
......@@ -4204,7 +4242,7 @@ static int mov_write_single_packet(AVFormatContext *s, AVPacket *pkt)
enc->codec_type == AVMEDIA_TYPE_VIDEO &&
trk->entry && pkt->flags & AV_PKT_FLAG_KEY)) {
if (frag_duration >= mov->min_fragment_duration)
mov_flush_fragment(s);
mov_auto_flush_fragment(s);
}
return ff_mov_write_packet(s, pkt);
......@@ -4585,6 +4623,9 @@ static int mov_write_header(AVFormatContext *s)
if (s->flags & AVFMT_FLAG_BITEXACT)
mov->exact = 1;
if (mov->flags & FF_MOV_FLAG_DELAY_MOOV)
mov->flags |= FF_MOV_FLAG_EMPTY_MOOV;
/* Set the FRAGMENT flag if any of the fragmentation methods are
* enabled. */
if (mov->max_fragment_duration || mov->max_fragment_size ||
......@@ -4616,8 +4657,9 @@ static int mov_write_header(AVFormatContext *s)
mov->use_editlist = 0;
}
}
if (mov->flags & FF_MOV_FLAG_EMPTY_MOOV && mov->use_editlist)
av_log(s, AV_LOG_WARNING, "No meaningful edit list will be written when using empty_moov\n");
if (mov->flags & FF_MOV_FLAG_EMPTY_MOOV &&
!(mov->flags & FF_MOV_FLAG_DELAY_MOOV) && mov->use_editlist)
av_log(s, AV_LOG_WARNING, "No meaningful edit list will be written when using empty_moov without delay_moov\n");
if (!mov->use_editlist && s->avoid_negative_ts == AVFMT_AVOID_NEG_TS_AUTO)
s->avoid_negative_ts = AVFMT_AVOID_NEG_TS_MAKE_ZERO;
......@@ -4630,8 +4672,10 @@ static int mov_write_header(AVFormatContext *s)
return AVERROR(EINVAL);
}
if ((ret = mov_write_identification(pb, s)) < 0)
return ret;
if (!(mov->flags & FF_MOV_FLAG_DELAY_MOOV)) {
if ((ret = mov_write_identification(pb, s)) < 0)
return ret;
}
mov->nb_streams = s->nb_streams;
if (mov->mode & (MODE_MP4|MODE_MOV|MODE_IPOD) && s->nb_chapters)
......@@ -4882,7 +4926,8 @@ static int mov_write_header(AVFormatContext *s)
if (mov->flags & FF_MOV_FLAG_ISML)
mov_write_isml_manifest(pb, mov);
if (mov->flags & FF_MOV_FLAG_EMPTY_MOOV) {
if (mov->flags & FF_MOV_FLAG_EMPTY_MOOV &&
!(mov->flags & FF_MOV_FLAG_DELAY_MOOV)) {
mov_write_moov_tag(pb, mov, s);
mov->fragments++;
if (mov->flags & FF_MOV_FLAG_FASTSTART)
......@@ -5104,7 +5149,7 @@ static int mov_write_trailer(AVFormatContext *s)
mov_write_moov_tag(pb, mov, s);
}
} else {
mov_flush_fragment(s);
mov_auto_flush_fragment(s);
for (i = 0; i < mov->nb_streams; i++)
mov->tracks[i].data_offset = 0;
if (mov->flags & FF_MOV_FLAG_FASTSTART) {
......
libavformat/movenc.h
View file @ f38e2bcb
......@@ -201,6 +201,7 @@ typedef struct MOVMuxContext {
#define FF_MOV_FLAG_DEFAULT_BASE_MOOF (1 << 10)
#define FF_MOV_FLAG_DASH (1 << 11)
#define FF_MOV_FLAG_FRAG_DISCONT (1 << 12)
#define FF_MOV_FLAG_DELAY_MOOV (1 << 13)
int ff_mov_write_packet(AVFormatContext *s, AVPacket *pkt);
......
libavformat/version.h
View file @ f38e2bcb
......@@ -30,8 +30,8 @@
#include "libavutil/version.h"
#define LIBAVFORMAT_VERSION_MAJOR 56
#define LIBAVFORMAT_VERSION_MINOR 16
#define LIBAVFORMAT_VERSION_MICRO 102
#define LIBAVFORMAT_VERSION_MINOR 17
#define LIBAVFORMAT_VERSION_MICRO 100
#define LIBAVFORMAT_VERSION_INT AV_VERSION_INT(LIBAVFORMAT_VERSION_MAJOR, \
LIBAVFORMAT_VERSION_MINOR, \
......
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