示例#1
0
文件: vpcc.c 项目: 15806905685/FFmpeg
int ff_isom_write_vpcc(AVFormatContext *s, AVIOContext *pb,
                       AVCodecParameters *par)
{
    int profile = par->profile;
    int level = par->level == FF_LEVEL_UNKNOWN ? 0 : par->level;
    int bit_depth = get_bit_depth(s, par->format);
    int vpx_color_space = get_vpx_color_space(s, par->color_space);
    int vpx_chroma_subsampling =
        get_vpx_chroma_subsampling(s, par->format, par->chroma_location);
    int vpx_transfer_function = get_vpx_transfer_function(par->color_trc);
    int vpx_video_full_range_flag =
        get_vpx_video_full_range_flag(par->color_range);

    if (bit_depth < 0 || vpx_color_space < 0 || vpx_chroma_subsampling < 0)
        return AVERROR_INVALIDDATA;

    if (profile == FF_PROFILE_UNKNOWN) {
        if (vpx_chroma_subsampling == VPX_SUBSAMPLING_420_VERTICAL ||
            vpx_chroma_subsampling == VPX_SUBSAMPLING_420_COLLOCATED_WITH_LUMA) {
            profile = (bit_depth == 8) ? FF_PROFILE_VP9_0 : FF_PROFILE_VP9_2;
        } else {
            profile = (bit_depth == 8) ? FF_PROFILE_VP9_1 : FF_PROFILE_VP9_3;
        }
    }

    avio_w8(pb, profile);
    avio_w8(pb, level);
    avio_w8(pb, (bit_depth << 4) | vpx_color_space);
    avio_w8(pb, (vpx_chroma_subsampling << 4) | (vpx_transfer_function << 1) |
                    vpx_video_full_range_flag);

    // vp9 does not have codec initialization data.
    avio_wb16(pb, 0);
    return 0;
}
示例#2
0
文件: vpcc.c 项目: Innovattic/FFmpeg
int ff_isom_get_vpcc_features(AVFormatContext *s, AVCodecParameters *par,
                              AVRational *frame_rate, VPCC *vpcc)
{
    int profile = par->profile;
    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);
    int vpx_video_full_range_flag =
        get_vpx_video_full_range_flag(par->color_range);

    if (bit_depth < 0 || vpx_chroma_subsampling < 0)
        return AVERROR_INVALIDDATA;

    if (profile == FF_PROFILE_UNKNOWN) {
        if (vpx_chroma_subsampling == VPX_SUBSAMPLING_420_VERTICAL ||
            vpx_chroma_subsampling == VPX_SUBSAMPLING_420_COLLOCATED_WITH_LUMA) {
            profile = (bit_depth == 8) ? FF_PROFILE_VP9_0 : FF_PROFILE_VP9_2;
        } else {
            profile = (bit_depth == 8) ? FF_PROFILE_VP9_1 : FF_PROFILE_VP9_3;
        }
    }

    vpcc->profile            = profile;
    vpcc->level              = level;
    vpcc->bitdepth           = bit_depth;
    vpcc->chroma_subsampling = vpx_chroma_subsampling;
    vpcc->full_range_flag    = vpx_video_full_range_flag;

    return 0;
}