int MPV_encode_init(AVCodecContext *avctx) { MpegEncContext *s = avctx->priv_data; int i, dummy; int chroma_h_shift, chroma_v_shift; avctx->pix_fmt = PIX_FMT_YUV420P; // FIXME s->bit_rate = avctx->bit_rate; s->width = avctx->width; s->height = avctx->height; if(avctx->gop_size > 600){ av_log(avctx, AV_LOG_ERROR, "Warning keyframe interval too large! reducing it ...\n"); avctx->gop_size=600; } s->gop_size = avctx->gop_size; s->avctx = avctx; s->flags= avctx->flags; s->flags2= avctx->flags2; s->max_b_frames= avctx->max_b_frames; s->codec_id= avctx->codec->id; s->luma_elim_threshold = avctx->luma_elim_threshold; s->chroma_elim_threshold= avctx->chroma_elim_threshold; s->strict_std_compliance= avctx->strict_std_compliance; s->data_partitioning= avctx->flags & CODEC_FLAG_PART; s->quarter_sample= (avctx->flags & CODEC_FLAG_QPEL)!=0; s->mpeg_quant= avctx->mpeg_quant; s->rtp_mode= !!avctx->rtp_payload_size; if (s->gop_size <= 1) { s->intra_only = 1; s->gop_size = 12; } else { s->intra_only = 0; } s->me_method = avctx->me_method; /* Fixed QSCALE */ s->fixed_qscale = !!(avctx->flags & CODEC_FLAG_QSCALE); s->adaptive_quant= ( s->avctx->lumi_masking || s->avctx->dark_masking || s->avctx->temporal_cplx_masking || s->avctx->spatial_cplx_masking || s->avctx->p_masking || (s->flags&CODEC_FLAG_QP_RD)) && !s->fixed_qscale; s->obmc= !!(s->flags & CODEC_FLAG_OBMC); s->loop_filter= !!(s->flags & CODEC_FLAG_LOOP_FILTER); s->alternate_scan= !!(s->flags & CODEC_FLAG_ALT_SCAN); if(avctx->rc_max_rate && !avctx->rc_buffer_size){ av_log(avctx, AV_LOG_ERROR, "a vbv buffer size is needed, for encoding with a maximum bitrate\n"); return -1; } if(avctx->rc_min_rate && avctx->rc_max_rate != avctx->rc_min_rate){ av_log(avctx, AV_LOG_INFO, "Warning min_rate > 0 but min_rate != max_rate isnt recommanded!\n"); } if((s->flags & CODEC_FLAG_4MV) && s->codec_id != CODEC_ID_MPEG4 && s->codec_id != CODEC_ID_H263 && s->codec_id != CODEC_ID_H263P){ av_log(avctx, AV_LOG_ERROR, "4MV not supported by codec\n"); return -1; } if(s->obmc && s->avctx->mb_decision != FF_MB_DECISION_SIMPLE){ av_log(avctx, AV_LOG_ERROR, "OBMC is only supported with simple mb decission\n"); return -1; } if(s->obmc && s->codec_id != CODEC_ID_H263 && s->codec_id != CODEC_ID_H263P){ av_log(avctx, AV_LOG_ERROR, "OBMC is only supported with H263(+)\n"); return -1; } if(s->quarter_sample && s->codec_id != CODEC_ID_MPEG4){ av_log(avctx, AV_LOG_ERROR, "qpel not supported by codec\n"); return -1; } if(s->data_partitioning && s->codec_id != CODEC_ID_MPEG4){ av_log(avctx, AV_LOG_ERROR, "data partitioning not supported by codec\n"); return -1; } if(s->max_b_frames && s->codec_id != CODEC_ID_MPEG4 && s->codec_id != CODEC_ID_MPEG1VIDEO && s->codec_id != CODEC_ID_MPEG2VIDEO){ av_log(avctx, AV_LOG_ERROR, "b frames not supported by codec\n"); return -1; } if(s->mpeg_quant && s->codec_id != CODEC_ID_MPEG4){ //FIXME mpeg2 uses that too av_log(avctx, AV_LOG_ERROR, "mpeg2 style quantization not supporetd by codec\n"); return -1; } if((s->flags & CODEC_FLAG_CBP_RD) && !(s->flags & CODEC_FLAG_TRELLIS_QUANT)){ av_log(avctx, AV_LOG_ERROR, "CBP RD needs trellis quant\n"); return -1; } if((s->flags & CODEC_FLAG_QP_RD) && s->avctx->mb_decision != FF_MB_DECISION_RD){ av_log(avctx, AV_LOG_ERROR, "QP RD needs mbd=2\n"); return -1; } if(s->avctx->scenechange_threshold < 1000000000 && (s->flags & CODEC_FLAG_CLOSED_GOP)){ av_log(avctx, AV_LOG_ERROR, "closed gop with scene change detection arent supported yet\n"); return -1; } i= ff_gcd(avctx->frame_rate, avctx->frame_rate_base); if(i > 1){ av_log(avctx, AV_LOG_INFO, "removing common factors from framerate\n"); avctx->frame_rate /= i; avctx->frame_rate_base /= i; // return -1; } if(s->codec_id==CODEC_ID_MJPEG){ s->intra_quant_bias= 1<<(QUANT_BIAS_SHIFT-1); //(a + x/2)/x s->inter_quant_bias= 0; }else if(s->mpeg_quant || s->codec_id==CODEC_ID_MPEG1VIDEO || s->codec_id==CODEC_ID_MPEG2VIDEO){ s->intra_quant_bias= 3<<(QUANT_BIAS_SHIFT-3); //(a + x*3/8)/x s->inter_quant_bias= 0; }else{ s->intra_quant_bias=0; s->inter_quant_bias=-(1<<(QUANT_BIAS_SHIFT-2)); //(a - x/4)/x } if(avctx->intra_quant_bias != FF_DEFAULT_QUANT_BIAS) s->intra_quant_bias= avctx->intra_quant_bias; if(avctx->inter_quant_bias != FF_DEFAULT_QUANT_BIAS) s->inter_quant_bias= avctx->inter_quant_bias; avcodec_get_chroma_sub_sample(avctx->pix_fmt, &chroma_h_shift, &chroma_v_shift); av_reduce(&s->time_increment_resolution, &dummy, s->avctx->frame_rate, s->avctx->frame_rate_base, (1<<16)-1); s->time_increment_bits = av_log2(s->time_increment_resolution - 1) + 1; switch(avctx->codec->id) { case CODEC_ID_MPEG1VIDEO: s->out_format = FMT_MPEG1; s->low_delay= 0; //s->max_b_frames ? 0 : 1; avctx->delay= s->low_delay ? 0 : (s->max_b_frames + 1); break; case CODEC_ID_MPEG2VIDEO: s->out_format = FMT_MPEG1; s->low_delay= 0; //s->max_b_frames ? 0 : 1; avctx->delay= s->low_delay ? 0 : (s->max_b_frames + 1); s->rtp_mode= 1; break; case CODEC_ID_LJPEG: case CODEC_ID_MJPEG: s->out_format = FMT_MJPEG; s->intra_only = 1; /* force intra only for jpeg */ s->mjpeg_write_tables = 1; /* write all tables */ s->mjpeg_data_only_frames = 0; /* write all the needed headers */ s->mjpeg_vsample[0] = 1<<chroma_v_shift; s->mjpeg_vsample[1] = 1; s->mjpeg_vsample[2] = 1; s->mjpeg_hsample[0] = 1<<chroma_h_shift; s->mjpeg_hsample[1] = 1; s->mjpeg_hsample[2] = 1; if (mjpeg_init(s) < 0) return -1; avctx->delay=0; s->low_delay=1; break; #ifdef CONFIG_RISKY case CODEC_ID_H263: if (h263_get_picture_format(s->width, s->height) == 7) { av_log(avctx, AV_LOG_INFO, "Input picture size isn't suitable for h263 codec! try h263+\n"); return -1; } s->out_format = FMT_H263; s->obmc= (avctx->flags & CODEC_FLAG_OBMC) ? 1:0; avctx->delay=0; s->low_delay=1; break; case CODEC_ID_H263P: s->out_format = FMT_H263; s->h263_plus = 1; /* Fx */ s->umvplus = (avctx->flags & CODEC_FLAG_H263P_UMV) ? 1:0; s->h263_aic= (avctx->flags & CODEC_FLAG_H263P_AIC) ? 1:0; s->modified_quant= s->h263_aic; s->alt_inter_vlc= (avctx->flags & CODEC_FLAG_H263P_AIV) ? 1:0; s->obmc= (avctx->flags & CODEC_FLAG_OBMC) ? 1:0; s->loop_filter= (avctx->flags & CODEC_FLAG_LOOP_FILTER) ? 1:0; s->unrestricted_mv= s->obmc || s->loop_filter || s->umvplus; s->h263_slice_structured= (s->flags & CODEC_FLAG_H263P_SLICE_STRUCT) ? 1:0; /* /Fx */ /* These are just to be sure */ avctx->delay=0; s->low_delay=1; break; case CODEC_ID_FLV1: s->out_format = FMT_H263; s->h263_flv = 2; /* format = 1; 11-bit codes */ s->unrestricted_mv = 1; s->rtp_mode=0; /* don't allow GOB */ avctx->delay=0; s->low_delay=1; break; case CODEC_ID_RV10: s->out_format = FMT_H263; avctx->delay=0; s->low_delay=1; break; case CODEC_ID_MPEG4: s->out_format = FMT_H263; s->h263_pred = 1; s->unrestricted_mv = 1; s->low_delay= s->max_b_frames ? 0 : 1; avctx->delay= s->low_delay ? 0 : (s->max_b_frames + 1); break; case CODEC_ID_MSMPEG4V1: s->out_format = FMT_H263; s->h263_msmpeg4 = 1; s->h263_pred = 1; s->unrestricted_mv = 1; s->msmpeg4_version= 1; avctx->delay=0; s->low_delay=1; break; case CODEC_ID_MSMPEG4V2: s->out_format = FMT_H263; s->h263_msmpeg4 = 1; s->h263_pred = 1; s->unrestricted_mv = 1; s->msmpeg4_version= 2; avctx->delay=0; s->low_delay=1; break; case CODEC_ID_MSMPEG4V3: s->out_format = FMT_H263; s->h263_msmpeg4 = 1; s->h263_pred = 1; s->unrestricted_mv = 1; s->msmpeg4_version= 3; s->flipflop_rounding=1; avctx->delay=0; s->low_delay=1; break; case CODEC_ID_WMV1: s->out_format = FMT_H263; s->h263_msmpeg4 = 1; s->h263_pred = 1; s->unrestricted_mv = 1; s->msmpeg4_version= 4; s->flipflop_rounding=1; avctx->delay=0; s->low_delay=1; break; case CODEC_ID_WMV2: s->out_format = FMT_H263; s->h263_msmpeg4 = 1; s->h263_pred = 1; s->unrestricted_mv = 1; s->msmpeg4_version= 5; s->flipflop_rounding=1; avctx->delay=0; s->low_delay=1; break; #endif default: return -1; } { /* set up some save defaults, some codecs might override them later */ static int done=0; if(!done){ int i; done=1; default_mv_penalty= av_mallocz( sizeof(uint8_t)*(MAX_FCODE+1)*(2*MAX_MV+1) ); memset(default_mv_penalty, 0, sizeof(uint8_t)*(MAX_FCODE+1)*(2*MAX_MV+1)); memset(default_fcode_tab , 0, sizeof(uint8_t)*(2*MAX_MV+1)); for(i=-16; i<16; i++){ default_fcode_tab[i + MAX_MV]= 1; } } } s->me.mv_penalty= default_mv_penalty; s->fcode_tab= default_fcode_tab; /* dont use mv_penalty table for crap MV as it would be confused */ //FIXME remove after fixing / removing old ME if (s->me_method < ME_EPZS) s->me.mv_penalty = default_mv_penalty; s->encoding = 1; /* init */ if (MPV_common_init(s) < 0) return -1; if(s->modified_quant) s->chroma_qscale_table= ff_h263_chroma_qscale_table; s->progressive_frame= s->progressive_sequence= !(avctx->flags & (CODEC_FLAG_INTERLACED_DCT|CODEC_FLAG_INTERLACED_ME)); ff_set_cmp(&s->dsp, s->dsp.ildct_cmp, s->avctx->ildct_cmp); ff_init_me(s); #ifdef CONFIG_ENCODERS #ifdef CONFIG_RISKY if (s->out_format == FMT_H263) h263_encode_init(s); if(s->msmpeg4_version) ff_msmpeg4_encode_init(s); #endif if (s->out_format == FMT_MPEG1) ff_mpeg1_encode_init(s); #endif /* init default q matrix */ for(i=0;i<64;i++) { int j= s->dsp.idct_permutation[i]; #ifdef CONFIG_RISKY if(s->codec_id==CODEC_ID_MPEG4 && s->mpeg_quant){ s->intra_matrix[j] = ff_mpeg4_default_intra_matrix[i]; s->inter_matrix[j] = ff_mpeg4_default_non_intra_matrix[i]; }else if(s->out_format == FMT_H263){ s->intra_matrix[j] = s->inter_matrix[j] = ff_mpeg1_default_non_intra_matrix[i]; }else #endif { /* mpeg1/2 */ s->intra_matrix[j] = ff_mpeg1_default_intra_matrix[i]; s->inter_matrix[j] = ff_mpeg1_default_non_intra_matrix[i]; } if(s->avctx->intra_matrix) s->intra_matrix[j] = s->avctx->intra_matrix[i]; if(s->avctx->inter_matrix) s->inter_matrix[j] = s->avctx->inter_matrix[i]; } /* precompute matrix */ /* for mjpeg, we do include qscale in the matrix */ if (s->out_format != FMT_MJPEG) { convert_matrix(&s->dsp, s->q_intra_matrix, s->q_intra_matrix16, s->intra_matrix, s->intra_quant_bias, 1, 31); convert_matrix(&s->dsp, s->q_inter_matrix, s->q_inter_matrix16, s->inter_matrix, s->inter_quant_bias, 1, 31); } if(ff_rate_control_init(s) < 0) return -1; s->picture_number = 0; s->input_picture_number = 0; s->picture_in_gop_number = 0; /* motion detector init */ s->f_code = 1; s->b_code = 1; return 0; }