From: vacingfang <vacingf...@tencent.com> support DOVI Video Stream Descriptor from Dolby Vision Streams Within the MPEG-2 Transport Stream Format V1.2
From the spec: https://www.dolby.com/us/en/technologies/\ dolby-vision/dolby-vision-bitstreams-in-mpeg-2-transport-\ stream-multiplex-v1.2.pdf. export the DOVI information with sidedata. Signed-off-by: vacingfang <vacingf...@tencent.com> --- libavformat/mpegts.c | 48 ++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 48 insertions(+) diff --git a/libavformat/mpegts.c b/libavformat/mpegts.c index a4ecb2e..ff3898c 100644 --- a/libavformat/mpegts.c +++ b/libavformat/mpegts.c @@ -28,6 +28,7 @@ #include "libavutil/mathematics.h" #include "libavutil/opt.h" #include "libavutil/avassert.h" +#include "libavutil/dovi_meta.h" #include "libavcodec/bytestream.h" #include "libavcodec/get_bits.h" #include "libavcodec/opus.h" @@ -2146,6 +2147,53 @@ int ff_parse_mpeg2_descriptor(AVFormatContext *fc, AVStream *st, int stream_type st->request_probe = 0; } break; + case 0xb0: /* DOVI video stream descriptor */ + { + uint32_t buf; + AVDOVIDecoderConfigurationRecord *dovi; + size_t dovi_size; + int ret; + if (desc_end - *pp < 4) // (8 + 8 + 7 + 6 + 1 + 1 + 1) / 8 + return AVERROR_INVALIDDATA; + + dovi = av_dovi_alloc(&dovi_size); + if (!dovi) + return AVERROR(ENOMEM); + + dovi->dv_version_major = get8(pp, desc_end); + dovi->dv_version_minor = get8(pp, desc_end); + buf = get16(pp, desc_end); + dovi->dv_profile = (buf >> 9) & 0x7f; // 7 bits + dovi->dv_level = (buf >> 3) & 0x3f; // 6 bits + dovi->rpu_present_flag = (buf >> 2) & 0x01; // 1 bit + dovi->el_present_flag = (buf >> 1) & 0x01; // 1 bit + dovi->bl_present_flag = buf & 0x01; // 1 bit + if (desc_end - *pp >= 20) { // 4 + 4 * 4 + buf = get8(pp, desc_end); + dovi->dv_bl_signal_compatibility_id = (buf >> 4) & 0x0f; // 4 bits + } else { + // 0 stands for None + // Dolby Vision V1.2.93 profiles and levels + dovi->dv_bl_signal_compatibility_id = 0; + } + + ret = av_stream_add_side_data(st, AV_PKT_DATA_DOVI_CONF, + (uint8_t *)dovi, dovi_size); + if (ret < 0) { + av_freep(dovi); + return ret; + } + + av_log(fc, AV_LOG_TRACE, "DOVI, version: %d.%d, profile: %d, level: %d, " + "rpu flag: %d, el flag: %d, bl flag: %d, compatibility id: %d\n", + dovi->dv_version_major, dovi->dv_version_minor, + dovi->dv_profile, dovi->dv_level, + dovi->rpu_present_flag, + dovi->el_present_flag, + dovi->bl_present_flag, + dovi->dv_bl_signal_compatibility_id); + } + break; default: break; } -- 2.7.4 _______________________________________________ ffmpeg-devel mailing list ffmpeg-devel@ffmpeg.org https://ffmpeg.org/mailman/listinfo/ffmpeg-devel To unsubscribe, visit link above, or email ffmpeg-devel-requ...@ffmpeg.org with subject "unsubscribe".
