diff options
| -rw-r--r-- | libavformat/vpcc.c | 53 | ||||
| -rw-r--r-- | libavformat/vpcc.h | 2 |
2 files changed, 51 insertions, 4 deletions
diff --git a/libavformat/vpcc.c b/libavformat/vpcc.c index 66d0df69e5..79514483af 100644 --- a/libavformat/vpcc.c +++ b/libavformat/vpcc.c @@ -67,11 +67,58 @@ static int get_vpx_video_full_range_flag(enum AVColorRange color_range) return color_range == AVCOL_RANGE_JPEG; } +// Find approximate VP9 level based on the Luma's Sample rate and Picture size. +static int get_vp9_level(AVCodecParameters *par, AVRational *frame_rate) { + int picture_size = par->width * par->height; + int64_t sample_rate; + + // All decisions will be based on picture_size, if frame rate is missing/invalid + if (!frame_rate || !frame_rate->den) + sample_rate = 0; + else + sample_rate = ((int64_t)picture_size * frame_rate->num) / frame_rate->den; + + if (picture_size <= 0) { + return 0; + } else if (sample_rate <= 829440 && picture_size <= 36864) { + return 0x10; + } else if (sample_rate <= 2764800 && picture_size <= 73728) { + return 0x11; + } else if (sample_rate <= 4608000 && picture_size <= 122880) { + return 0x20; + } else if (sample_rate <= 9216000 && picture_size <= 245760) { + return 0x21; + } else if (sample_rate <= 20736000 && picture_size <= 552960) { + return 0x30; + } else if (sample_rate <= 36864000 && picture_size <= 983040) { + return 0x31; + } else if (sample_rate <= 83558400 && picture_size <= 2228224) { + return 0x40; + } else if (sample_rate <= 160432128 && picture_size <= 2228224) { + return 0x41; + } else if (sample_rate <= 311951360 && picture_size <= 8912896) { + return 0x50; + } else if (sample_rate <= 588251136 && picture_size <= 8912896) { + return 0x51; + } else if (sample_rate <= 1176502272 && picture_size <= 8912896) { + return 0x52; + } else if (sample_rate <= 1176502272 && picture_size <= 35651584) { + return 0x60; + } else if (sample_rate <= 2353004544 && picture_size <= 35651584) { + return 0x61; + } else if (sample_rate <= 4706009088 && picture_size <= 35651584) { + return 0x62; + } else { + return 0; + } +} + int ff_isom_get_vpcc_features(AVFormatContext *s, AVCodecParameters *par, - VPCC *vpcc) + AVRational *frame_rate, VPCC *vpcc) { int profile = par->profile; - int level = par->level == FF_LEVEL_UNKNOWN ? 0 : par->level; + int level = par->level == FF_LEVEL_UNKNOWN ? + get_vp9_level(par, frame_rate) : par->level; int bit_depth = get_bit_depth(s, par->format); int vpx_chroma_subsampling = get_vpx_chroma_subsampling(s, par->format, par->chroma_location); @@ -105,7 +152,7 @@ int ff_isom_write_vpcc(AVFormatContext *s, AVIOContext *pb, VPCC vpcc; int ret; - ret = ff_isom_get_vpcc_features(s, par, &vpcc); + ret = ff_isom_get_vpcc_features(s, par, NULL, &vpcc); if (ret < 0) return ret; diff --git a/libavformat/vpcc.h b/libavformat/vpcc.h index d71ba05105..e87bec55c2 100644 --- a/libavformat/vpcc.h +++ b/libavformat/vpcc.h @@ -53,6 +53,6 @@ int ff_isom_write_vpcc(AVFormatContext *s, AVIOContext *pb, AVCodecParameters *par); int ff_isom_get_vpcc_features(AVFormatContext *s, AVCodecParameters *par, - VPCC *vpcc); + AVRational *frame_rate, VPCC *vpcc); #endif /* AVFORMAT_VPCC_H */ |