diff options
| author | Vignesh Venkatasubramanian <vigneshv-at-google.com@ffmpeg.org> | 2022-09-20 14:17:11 -0700 |
|---|---|---|
| committer | James Zern <jzern@google.com> | 2022-09-22 14:10:22 -0700 |
| commit | a2d95928c3584e7224a06b73845755f45c13c7f7 (patch) | |
| tree | 3b24413f8c30df63bfcd86cdb15d21391c8a44f1 /libavformat | |
| parent | bd7d69fe354cf5b3d6247f049af44bfa56f0531a (diff) | |
| download | ffmpeg-a2d95928c3584e7224a06b73845755f45c13c7f7.tar.gz | |
avformat/movenc: Write auxi box for animated AVIF with alpha
According to the HEIF specification (ISO/IEC 23008-12) Section
7.5.3.1, tracks with handler_type 'auxv' must contain a 'auxi' box
in its SampleEntry to notify the nature of the auxiliary track to the
decoder.
The content is the same as the 'auxC' box. So parameterize and re-use
the existing function.
Signed-off-by: Vignesh Venkatasubramanian <vigneshv@google.com>
Signed-off-by: James Zern <jzern@google.com>
Diffstat (limited to 'libavformat')
| -rw-r--r-- | libavformat/movenc.c | 27 | ||||
| -rw-r--r-- | libavformat/version.h | 2 |
2 files changed, 16 insertions, 13 deletions
diff --git a/libavformat/movenc.c b/libavformat/movenc.c index c8b2e141cb..754f95912a 100644 --- a/libavformat/movenc.c +++ b/libavformat/movenc.c @@ -2179,6 +2179,16 @@ static int mov_write_ccst_tag(AVIOContext *pb) return update_size(pb, pos); } +static int mov_write_aux_tag(AVIOContext *pb, const char *aux_type) +{ + int64_t pos = avio_tell(pb); + avio_wb32(pb, 0); /* size */ + ffio_wfourcc(pb, aux_type); + avio_wb32(pb, 0); /* Version & flags */ + avio_write(pb, "urn:mpeg:mpegB:cicp:systems:auxiliary:alpha\0", 44); + return update_size(pb, pos); +} + static int mov_write_video_tag(AVFormatContext *s, AVIOContext *pb, MOVMuxContext *mov, MOVTrack *track) { int ret = AVERROR_BUG; @@ -2363,8 +2373,11 @@ static int mov_write_video_tag(AVFormatContext *s, AVIOContext *pb, MOVMuxContex if (avid) avio_wb32(pb, 0); - if (track->mode == MODE_AVIF) + if (track->mode == MODE_AVIF) { mov_write_ccst_tag(pb); + if (s->nb_streams > 0 && track == &mov->tracks[1]) + mov_write_aux_tag(pb, "auxi"); + } return update_size(pb, pos); } @@ -3044,16 +3057,6 @@ static int mov_write_pixi_tag(AVIOContext *pb, MOVMuxContext *mov, AVFormatConte return update_size(pb, pos); } -static int mov_write_auxC_tag(AVIOContext *pb) -{ - int64_t pos = avio_tell(pb); - avio_wb32(pb, 0); /* size */ - ffio_wfourcc(pb, "auxC"); - avio_wb32(pb, 0); /* Version & flags */ - avio_write(pb, "urn:mpeg:mpegB:cicp:systems:auxiliary:alpha\0", 44); - return update_size(pb, pos); -} - static int mov_write_ipco_tag(AVIOContext *pb, MOVMuxContext *mov, AVFormatContext *s) { int64_t pos = avio_tell(pb); @@ -3066,7 +3069,7 @@ static int mov_write_ipco_tag(AVIOContext *pb, MOVMuxContext *mov, AVFormatConte if (!i) mov_write_colr_tag(pb, &mov->tracks[0], 0); else - mov_write_auxC_tag(pb); + mov_write_aux_tag(pb, "auxC"); } return update_size(pb, pos); } diff --git a/libavformat/version.h b/libavformat/version.h index ede3f46428..f7eb36a04a 100644 --- a/libavformat/version.h +++ b/libavformat/version.h @@ -32,7 +32,7 @@ #include "version_major.h" #define LIBAVFORMAT_VERSION_MINOR 32 -#define LIBAVFORMAT_VERSION_MICRO 100 +#define LIBAVFORMAT_VERSION_MICRO 101 #define LIBAVFORMAT_VERSION_INT AV_VERSION_INT(LIBAVFORMAT_VERSION_MAJOR, \ LIBAVFORMAT_VERSION_MINOR, \ |