diff options
Diffstat (limited to 'libavformat/movenc.c')
| -rw-r--r-- | libavformat/movenc.c | 28 |
1 files changed, 28 insertions, 0 deletions
diff --git a/libavformat/movenc.c b/libavformat/movenc.c index 9e37781000..40473fdf56 100644 --- a/libavformat/movenc.c +++ b/libavformat/movenc.c @@ -2244,6 +2244,33 @@ static int mov_write_mdcv_tag(AVIOContext *pb, MOVTrack *track) return 32; } +static int mov_write_amve_tag(AVIOContext *pb, MOVTrack *track) +{ + const int illuminance_den = 10000; + const int ambient_den = 50000; + const AVPacketSideData *side_data; + const AVAmbientViewingEnvironment *ambient; + + + side_data = av_packet_side_data_get(track->st->codecpar->coded_side_data, + track->st->codecpar->nb_coded_side_data, + AV_PKT_DATA_AMBIENT_VIEWING_ENVIRONMENT); + + if (!side_data) + return 0; + + ambient = (const AVAmbientViewingEnvironment*)side_data->data; + if (!ambient || !ambient->ambient_illuminance.num) + return 0; + + avio_wb32(pb, 16); // size + ffio_wfourcc(pb, "amve"); + avio_wb32(pb, rescale_rational(ambient->ambient_illuminance, illuminance_den)); + avio_wb16(pb, rescale_rational(ambient->ambient_light_x, ambient_den)); + avio_wb16(pb, rescale_rational(ambient->ambient_light_y, ambient_den)); + return 16; +} + static void find_compressor(char * compressor_name, int len, MOVTrack *track) { AVDictionaryEntry *encoder; @@ -2457,6 +2484,7 @@ static int mov_write_video_tag(AVFormatContext *s, AVIOContext *pb, MOVMuxContex if (track->mode == MODE_MOV || track->mode == MODE_MP4) { mov_write_clli_tag(pb, track); mov_write_mdcv_tag(pb, track); + mov_write_amve_tag(pb, track); } if (track->mode == MODE_MP4 && mov->fc->strict_std_compliance <= FF_COMPLIANCE_UNOFFICIAL) { |