X264_init(AVCodecContext *avctx) { X264Context *x4 = avctx->priv_data; x264_param_default(&x4->params); x4->params.pf_log = X264_log; x4->params.p_log_private = avctx; x4->params.i_keyint_max = avctx->gop_size; x4->params.rc.i_bitrate = avctx->bit_rate / 1000; x4->params.rc.i_vbv_buffer_size = avctx->rc_buffer_size / 1000; x4->params.rc.i_vbv_max_bitrate = avctx->rc_max_rate / 1000; x4->params.rc.b_stat_write = avctx->flags & CODEC_FLAG_PASS1; if(avctx->flags & CODEC_FLAG_PASS2) x4->params.rc.b_stat_read = 1; else{ if(avctx->crf){ x4->params.rc.i_rc_method = X264_RC_CRF; x4->params.rc.f_rf_constant = avctx->crf; }else if(avctx->cqp > -1){ x4->params.rc.i_rc_method = X264_RC_CQP; x4->params.rc.i_qp_constant = avctx->cqp; } } // if neither crf nor cqp modes are selected we have to enable the RC // we do it this way because we cannot check if the bitrate has been set if(!(avctx->crf || (avctx->cqp > -1))) x4->params.rc.i_rc_method = X264_RC_ABR; x4->params.i_bframe = avctx->max_b_frames; x4->params.b_cabac = avctx->coder_type == FF_CODER_TYPE_AC; x4->params.b_bframe_adaptive = avctx->b_frame_strategy; x4->params.i_bframe_bias = avctx->bframebias; x4->params.b_bframe_pyramid = avctx->flags2 & CODEC_FLAG2_BPYRAMID; avctx->has_b_frames= avctx->flags2 & CODEC_FLAG2_BPYRAMID ? 2 : !!avctx->max_b_frames; x4->params.i_keyint_min = avctx->keyint_min; if(x4->params.i_keyint_min > x4->params.i_keyint_max) x4->params.i_keyint_min = x4->params.i_keyint_max; x4->params.i_scenecut_threshold = avctx->scenechange_threshold; x4->params.b_deblocking_filter = avctx->flags & CODEC_FLAG_LOOP_FILTER; x4->params.i_deblocking_filter_alphac0 = avctx->deblockalpha; x4->params.i_deblocking_filter_beta = avctx->deblockbeta; x4->params.rc.i_qp_min = avctx->qmin; x4->params.rc.i_qp_max = avctx->qmax; x4->params.rc.i_qp_step = avctx->max_qdiff; x4->params.rc.f_qcompress = avctx->qcompress; /* 0.0 => cbr, 1.0 => constant qp */ x4->params.rc.f_qblur = avctx->qblur; /* temporally blur quants */ x4->params.rc.f_complexity_blur = avctx->complexityblur; x4->params.i_frame_reference = avctx->refs; x4->params.i_width = avctx->width; x4->params.i_height = avctx->height; x4->params.vui.i_sar_width = avctx->sample_aspect_ratio.num; x4->params.vui.i_sar_height = avctx->sample_aspect_ratio.den; x4->params.i_fps_num = avctx->time_base.den; x4->params.i_fps_den = avctx->time_base.num; x4->params.analyse.inter = 0; if(avctx->partitions){ if(avctx->partitions & X264_PART_I4X4) x4->params.analyse.inter |= X264_ANALYSE_I4x4; if(avctx->partitions & X264_PART_I8X8) x4->params.analyse.inter |= X264_ANALYSE_I8x8; if(avctx->partitions & X264_PART_P8X8) x4->params.analyse.inter |= X264_ANALYSE_PSUB16x16; if(avctx->partitions & X264_PART_P4X4) x4->params.analyse.inter |= X264_ANALYSE_PSUB8x8; if(avctx->partitions & X264_PART_B8X8) x4->params.analyse.inter |= X264_ANALYSE_BSUB16x16; } x4->params.analyse.i_direct_mv_pred = avctx->directpred; x4->params.analyse.b_weighted_bipred = avctx->flags2 & CODEC_FLAG2_WPRED; if(avctx->me_method == ME_EPZS) x4->params.analyse.i_me_method = X264_ME_DIA; else if(avctx->me_method == ME_HEX) x4->params.analyse.i_me_method = X264_ME_HEX; else if(avctx->me_method == ME_UMH) x4->params.analyse.i_me_method = X264_ME_UMH; else if(avctx->me_method == ME_FULL) x4->params.analyse.i_me_method = X264_ME_ESA; else if(avctx->me_method == ME_TESA) x4->params.analyse.i_me_method = X264_ME_TESA; else x4->params.analyse.i_me_method = X264_ME_HEX; x4->params.analyse.i_me_range = avctx->me_range; x4->params.analyse.i_subpel_refine = avctx->me_subpel_quality; x4->params.analyse.b_bidir_me = avctx->bidir_refine > 0; x4->params.analyse.b_bframe_rdo = avctx->flags2 & CODEC_FLAG2_BRDO; x4->params.analyse.b_mixed_references = avctx->flags2 & CODEC_FLAG2_MIXED_REFS; x4->params.analyse.b_chroma_me = avctx->me_cmp & FF_CMP_CHROMA; x4->params.analyse.b_transform_8x8 = avctx->flags2 & CODEC_FLAG2_8X8DCT; x4->params.analyse.b_fast_pskip = avctx->flags2 & CODEC_FLAG2_FASTPSKIP; x4->params.analyse.i_trellis = avctx->trellis; x4->params.analyse.i_noise_reduction = avctx->noise_reduction; if(avctx->level > 0) x4->params.i_level_idc = avctx->level; x4->params.rc.f_rate_tolerance = (float)avctx->bit_rate_tolerance/avctx->bit_rate; if((avctx->rc_buffer_size != 0) && (avctx->rc_initial_buffer_occupancy <= avctx->rc_buffer_size)){ x4->params.rc.f_vbv_buffer_init = (float)avctx->rc_initial_buffer_occupancy/avctx->rc_buffer_size; } else x4->params.rc.f_vbv_buffer_init = 0.9; x4->params.rc.f_ip_factor = 1/fabs(avctx->i_quant_factor); x4->params.rc.f_pb_factor = avctx->b_quant_factor; x4->params.analyse.i_chroma_qp_offset = avctx->chromaoffset; x4->params.rc.psz_rc_eq = avctx->rc_eq; x4->params.analyse.b_psnr = avctx->flags & CODEC_FLAG_PSNR; x4->params.i_log_level = X264_LOG_DEBUG; x4->params.b_aud = avctx->flags2 & CODEC_FLAG2_AUD; x4->params.i_threads = avctx->thread_count; x4->params.b_interlaced = avctx->flags & CODEC_FLAG_INTERLACED_DCT; if(avctx->flags & CODEC_FLAG_GLOBAL_HEADER){ x4->params.b_repeat_headers = 0; } x4->enc = x264_encoder_open(&x4->params); if(!x4->enc) return -1; avctx->coded_frame = &x4->out_pic; if(avctx->flags & CODEC_FLAG_GLOBAL_HEADER){ x264_nal_t *nal; int nnal, i, s = 0; x264_encoder_headers(x4->enc, &nal, &nnal); /* 5 bytes NAL header + worst case escaping */ for(i = 0; i < nnal; i++) s += 5 + nal[i].i_payload * 4 / 3; avctx->extradata = av_malloc(s); avctx->extradata_size = encode_nals(avctx->extradata, s, nal, nnal); } return 0; }