static int decode_sequence_header(AVCodecContext *avctx, GetBitContext *gb) { VC9Context *v = avctx->priv_data; v->profile = get_bits(gb, 2); av_log(avctx, AV_LOG_DEBUG, "Profile: %i\n", v->profile); #if HAS_ADVANCED_PROFILE if (v->profile > PROFILE_MAIN) { v->level = get_bits(gb, 3); v->chromaformat = get_bits(gb, 2); if (v->chromaformat != 1) { av_log(avctx, AV_LOG_ERROR, "Only 4:2:0 chroma format supported\n"); return -1; } } else #endif { v->res_sm = get_bits(gb, 2); //reserved if (v->res_sm) { av_log(avctx, AV_LOG_ERROR, "Reserved RES_SM=%i is forbidden\n", v->res_sm); //return -1; } } // (fps-2)/4 (->30) v->frmrtq_postproc = get_bits(gb, 3); //common // (bitrate-32kbps)/64kbps v->bitrtq_postproc = get_bits(gb, 5); //common v->loopfilter = get_bits(gb, 1); //common #if HAS_ADVANCED_PROFILE if (v->profile <= PROFILE_MAIN) #endif { v->res_x8 = get_bits(gb, 1); //reserved if (v->res_x8) { av_log(avctx, AV_LOG_ERROR, "1 for reserved RES_X8 is forbidden\n"); return -1; } v->multires = get_bits(gb, 1); v->res_fasttx = get_bits(gb, 1); if (!v->res_fasttx) { av_log(avctx, AV_LOG_ERROR, "0 for reserved RES_FASTTX is forbidden\n"); //return -1; } } v->fastuvmc = get_bits(gb, 1); //common if (!v->profile && !v->fastuvmc) { av_log(avctx, AV_LOG_ERROR, "FASTUVMC unavailable in Simple Profile\n"); return -1; } v->extended_mv = get_bits(gb, 1); //common if (!v->profile && v->extended_mv) { av_log(avctx, AV_LOG_ERROR, "Extended MVs unavailable in Simple Profile\n"); return -1; } v->dquant = get_bits(gb, 2); //common v->vstransform = get_bits(gb, 1); //common #if HAS_ADVANCED_PROFILE if (v->profile <= PROFILE_MAIN) #endif { v->res_transtab = get_bits(gb, 1); if (v->res_transtab) { av_log(avctx, AV_LOG_ERROR, "1 for reserved RES_TRANSTAB is forbidden\n"); return -1; } } v->overlap = get_bits(gb, 1); //common #if HAS_ADVANCED_PROFILE if (v->profile <= PROFILE_MAIN) #endif { v->syncmarker = get_bits(gb, 1); v->rangered = get_bits(gb, 1); } avctx->max_b_frames = get_bits(gb, 3); //common v->quantizer_mode = get_bits(gb, 2); //common #if HAS_ADVANCED_PROFILE if (v->profile <= PROFILE_MAIN) #endif { v->finterpflag = get_bits(gb, 1); //common v->res_rtm_flag = get_bits(gb, 1); //reserved if (!v->res_rtm_flag) { av_log(avctx, AV_LOG_ERROR, "0 for reserved RES_RTM_FLAG is forbidden\n"); //return -1; } #if TRACE av_log(avctx, AV_LOG_INFO, "Profile %i:\nfrmrtq_postproc=%i, bitrtq_postproc=%i\n" "LoopFilter=%i, MultiRes=%i, FastUVMV=%i, Extended MV=%i\n" "Rangered=%i, VSTransform=%i, Overlap=%i, SyncMarker=%i\n" "DQuant=%i, Quantizer mode=%i, Max B frames=%i\n", v->profile, v->frmrtq_postproc, v->bitrtq_postproc, v->loopfilter, v->multires, v->fastuvmc, v->extended_mv, v->rangered, v->vstransform, v->overlap, v->syncmarker, v->dquant, v->quantizer_mode, avctx->max_b_frames ); #endif } #if HAS_ADVANCED_PROFILE else decode_advanced_sequence_header(avctx, gb); #endif }