diff options
Diffstat (limited to 'libavcodec/ratecontrol.c')
| -rw-r--r-- | libavcodec/ratecontrol.c | 126 |
1 files changed, 63 insertions, 63 deletions
diff --git a/libavcodec/ratecontrol.c b/libavcodec/ratecontrol.c index 0fc9caa317..7f87696669 100644 --- a/libavcodec/ratecontrol.c +++ b/libavcodec/ratecontrol.c @@ -21,7 +21,7 @@ /** * @file ratecontrol.c * Rate control for video encoders. - */ + */ #include "avcodec.h" #include "dsputil.h" @@ -39,8 +39,8 @@ static double get_qscale(MpegEncContext *s, RateControlEntry *rce, double rate_f void ff_write_pass1_stats(MpegEncContext *s){ snprintf(s->avctx->stats_out, 256, "in:%d out:%d type:%d q:%d itex:%d ptex:%d mv:%d misc:%d fcode:%d bcode:%d mc-var:%d var:%d icount:%d;\n", - s->current_picture_ptr->display_picture_number, s->current_picture_ptr->coded_picture_number, s->pict_type, - s->current_picture.quality, s->i_tex_bits, s->p_tex_bits, s->mv_bits, s->misc_bits, + s->current_picture_ptr->display_picture_number, s->current_picture_ptr->coded_picture_number, s->pict_type, + s->current_picture.quality, s->i_tex_bits, s->p_tex_bits, s->mv_bits, s->misc_bits, s->f_code, s->b_code, s->current_picture.mc_mb_var_sum, s->current_picture.mb_var_sum, s->i_count); } @@ -53,7 +53,7 @@ int ff_rate_control_init(MpegEncContext *s) for(i=0; i<5; i++){ rcc->pred[i].coeff= FF_QP2LAMBDA * 7.0; rcc->pred[i].count= 1.0; - + rcc->pred[i].decay= 0.4; rcc->i_cplx_sum [i]= rcc->p_cplx_sum [i]= @@ -78,7 +78,7 @@ int ff_rate_control_init(MpegEncContext *s) return -1; rcc->entry = (RateControlEntry*)av_mallocz(i*sizeof(RateControlEntry)); rcc->num_entries= i; - + /* init all to skipped p frames (with b frames we might have a not encoded frame at the end FIXME) */ for(i=0; i<rcc->num_entries; i++){ RateControlEntry *rce= &rcc->entry[i]; @@ -86,8 +86,8 @@ int ff_rate_control_init(MpegEncContext *s) rce->qscale= rce->new_qscale=FF_QP2LAMBDA * 2; rce->misc_bits= s->mb_num + 10; rce->mb_var_sum= s->mb_num*100; - } - + } + /* read stats */ p= s->avctx->stats_in; for(i=0; i<rcc->num_entries - s->max_b_frames; i++){ @@ -108,7 +108,7 @@ int ff_rate_control_init(MpegEncContext *s) rce= &rcc->entry[picture_number]; e+=sscanf(p, " in:%*d out:%*d type:%d q:%f itex:%d ptex:%d mv:%d misc:%d fcode:%d bcode:%d mc-var:%d var:%d icount:%d", - &rce->pict_type, &rce->qscale, &rce->i_tex_bits, &rce->p_tex_bits, &rce->mv_bits, &rce->misc_bits, + &rce->pict_type, &rce->qscale, &rce->i_tex_bits, &rce->p_tex_bits, &rce->mv_bits, &rce->misc_bits, &rce->f_code, &rce->b_code, &rce->mc_mb_var_sum, &rce->mb_var_sum, &rce->i_count); if(e!=12){ av_log(s->avctx, AV_LOG_ERROR, "statistics are damaged at line %d, parser out=%d\n", i, e); @@ -116,25 +116,25 @@ int ff_rate_control_init(MpegEncContext *s) } p= next; } - + if(init_pass2(s) < 0) return -1; } - + if(!(s->flags&CODEC_FLAG_PASS2)){ rcc->short_term_qsum=0.001; rcc->short_term_qcount=0.001; - + rcc->pass1_rc_eq_output_sum= 0.001; rcc->pass1_wanted_bits=0.001; - + /* init stuff with the user specified complexity */ if(s->avctx->rc_initial_cplx){ for(i=0; i<60*30; i++){ double bits= s->avctx->rc_initial_cplx * (i/10000.0 + 1.0)*s->mb_num; RateControlEntry rce; double q; - + if (i%((s->gop_size+3)/4)==0) rce.pict_type= I_TYPE; else if(i%(s->max_b_frames+1)) rce.pict_type= B_TYPE; else rce.pict_type= P_TYPE; @@ -171,7 +171,7 @@ int ff_rate_control_init(MpegEncContext *s) } } - + return 0; } @@ -196,14 +196,14 @@ static inline double bits2qp(RateControlEntry *rce, double bits){ } return rce->qscale * (double)(rce->i_tex_bits + rce->p_tex_bits+1)/ bits; } - + int ff_vbv_update(MpegEncContext *s, int frame_size){ RateControlContext *rcc= &s->rc_context; const double fps= 1/av_q2d(s->avctx->time_base); const int buffer_size= s->avctx->rc_buffer_size; const double min_rate= s->avctx->rc_min_rate/fps; const double max_rate= s->avctx->rc_max_rate/fps; - + //printf("%d %f %d %f %f\n", buffer_size, rcc->buffer_index, frame_size, min_rate, max_rate); if(buffer_size){ int left; @@ -219,11 +219,11 @@ int ff_vbv_update(MpegEncContext *s, int frame_size){ if(rcc->buffer_index > buffer_size){ int stuffing= ceil((rcc->buffer_index - buffer_size)/8); - + if(stuffing < 4 && s->codec_id == CODEC_ID_MPEG4) stuffing=4; rcc->buffer_index -= 8*stuffing; - + if(s->avctx->debug & FF_DEBUG_RC) av_log(s->avctx, AV_LOG_DEBUG, "stuffing %d bytes\n", stuffing); @@ -241,7 +241,7 @@ static double get_qscale(MpegEncContext *s, RateControlEntry *rce, double rate_f AVCodecContext *a= s->avctx; double q, bits; const int pict_type= rce->new_pict_type; - const double mb_num= s->mb_num; + const double mb_num= s->mb_num; int i; double const_values[]={ @@ -310,32 +310,32 @@ static double get_qscale(MpegEncContext *s, RateControlEntry *rce, double rate_f }; bits= ff_eval(s->avctx->rc_eq, const_values, const_names, func1, func1_names, NULL, NULL, rce); - + rcc->pass1_rc_eq_output_sum+= bits; bits*=rate_factor; if(bits<0.0) bits=0.0; bits+= 1.0; //avoid 1/0 issues - + /* user override */ for(i=0; i<s->avctx->rc_override_count; i++){ RcOverride *rco= s->avctx->rc_override; if(rco[i].start_frame > frame_num) continue; if(rco[i].end_frame < frame_num) continue; - - if(rco[i].qscale) + + if(rco[i].qscale) bits= qp2bits(rce, rco[i].qscale); //FIXME move at end to really force it? else bits*= rco[i].quality_factor; } q= bits2qp(rce, bits); - + /* I/B difference */ if (pict_type==I_TYPE && s->avctx->i_quant_factor<0.0) q= -q*s->avctx->i_quant_factor + s->avctx->i_quant_offset; else if(pict_type==B_TYPE && s->avctx->b_quant_factor<0.0) q= -q*s->avctx->b_quant_factor + s->avctx->b_quant_offset; - + return q; } @@ -345,7 +345,7 @@ static double get_diff_limited_q(MpegEncContext *s, RateControlEntry *rce, doubl const int pict_type= rce->new_pict_type; const double last_p_q = rcc->last_qscale_for[P_TYPE]; const double last_non_b_q= rcc->last_qscale_for[rcc->last_non_b_pict_type]; - + if (pict_type==I_TYPE && (a->i_quant_factor>0.0 || rcc->last_non_b_pict_type==P_TYPE)) q= last_p_q *ABS(a->i_quant_factor) + a->i_quant_offset; else if(pict_type==B_TYPE && a->b_quant_factor>0.0) @@ -361,7 +361,7 @@ static double get_diff_limited_q(MpegEncContext *s, RateControlEntry *rce, doubl } rcc->last_qscale_for[pict_type]= q; //Note we cant do that after blurring - + if(pict_type!=B_TYPE) rcc->last_non_b_pict_type= pict_type; @@ -372,9 +372,9 @@ static double get_diff_limited_q(MpegEncContext *s, RateControlEntry *rce, doubl * gets the qmin & qmax for pict_type */ static void get_qminmax(int *qmin_ret, int *qmax_ret, MpegEncContext *s, int pict_type){ - int qmin= s->avctx->lmin; + int qmin= s->avctx->lmin; int qmax= s->avctx->lmax; - + assert(qmin <= qmax); if(pict_type==B_TYPE){ @@ -389,7 +389,7 @@ static void get_qminmax(int *qmin_ret, int *qmax_ret, MpegEncContext *s, int pic qmax= clip(qmax, 1, FF_LAMBDA_MAX); if(qmax<qmin) qmax= qmin; - + *qmin_ret= qmin; *qmax_ret= qmax; } @@ -403,7 +403,7 @@ static double modify_qscale(MpegEncContext *s, RateControlEntry *rce, double q, const double fps= 1/av_q2d(s->avctx->time_base); const double min_rate= s->avctx->rc_min_rate / fps; const double max_rate= s->avctx->rc_max_rate / fps; - + get_qminmax(&qmin, &qmax, s, pict_type); /* modulation */ @@ -454,16 +454,16 @@ static double modify_qscale(MpegEncContext *s, RateControlEntry *rce, double q, }else{ double min2= log(qmin); double max2= log(qmax); - + q= log(q); q= (q - min2)/(max2-min2) - 0.5; q*= -4.0; q= 1.0/(1.0 + exp(q)); q= q*(max2-min2) + min2; - + q= exp(q); } - + return q; } @@ -511,7 +511,7 @@ static void adaptive_quantization(MpegEncContext *s, double q){ Picture * const pic= &s->current_picture; const int mb_width = s->mb_width; const int mb_height = s->mb_height; - + for(i=0; i<s->mb_num; i++){ const int mb_xy= s->mb_index2xy[i]; float temp_cplx= sqrt(pic->mc_mb_var[mb_xy]); //FIXME merge in pow() @@ -522,14 +522,14 @@ static void adaptive_quantization(MpegEncContext *s, double q){ int mb_y = mb_xy / s->mb_stride; int mb_distance; float mb_factor = 0.0; -#if 0 +#if 0 if(spat_cplx < q/3) spat_cplx= q/3; //FIXME finetune if(temp_cplx < q/3) temp_cplx= q/3; //FIXME finetune -#endif +#endif if(spat_cplx < 4) spat_cplx= 4; //FIXME finetune if(temp_cplx < 4) temp_cplx= 4; //FIXME finetune - if((s->mb_type[mb_xy]&CANDIDATE_MB_TYPE_INTRA)){//FIXME hq mode + if((s->mb_type[mb_xy]&CANDIDATE_MB_TYPE_INTRA)){//FIXME hq mode cplx= spat_cplx; factor= 1.0 + p_masking; }else{ @@ -559,9 +559,9 @@ static void adaptive_quantization(MpegEncContext *s, double q){ } factor*= 1.0 - border_masking*mb_factor; - + if(factor<0.00001) factor= 0.00001; - + bits= cplx*factor; cplx_sum+= cplx; bits_sum+= bits; @@ -588,7 +588,7 @@ static void adaptive_quantization(MpegEncContext *s, double q){ if(bits_sum < 0.001) bits_sum= 0.001; if(cplx_sum < 0.001) cplx_sum= 0.001; } - + for(i=0; i<s->mb_num; i++){ const int mb_xy= s->mb_index2xy[i]; float newq= q*cplx_tab[i]/bits_tab[i]; @@ -654,7 +654,7 @@ float ff_rate_estimate_qscale(MpegEncContext *s) if(br_compensation<=0.0) br_compensation=0.001; var= pict_type == I_TYPE ? pic->mb_var_sum : pic->mc_mb_var_sum; - + short_term_q = 0; /* avoid warning */ if(s->flags&CODEC_FLAG_PASS2){ if(pict_type!=I_TYPE) @@ -663,7 +663,7 @@ float ff_rate_estimate_qscale(MpegEncContext *s) q= rce->new_qscale / br_compensation; //printf("%f %f %f last:%d var:%d type:%d//\n", q, rce->new_qscale, br_compensation, s->frame_bits, var, pict_type); }else{ - rce->pict_type= + rce->pict_type= rce->new_pict_type= pict_type; rce->mc_mb_var_sum= pic->mc_mb_var_sum; rce->mb_var_sum = pic-> mb_var_sum; @@ -682,7 +682,7 @@ float ff_rate_estimate_qscale(MpegEncContext *s) rce->i_count = 0; //FIXME we do know this approx rce->i_tex_bits= 0; rce->p_tex_bits= bits*0.9; - + rce->mv_bits= bits*0.1; } rcc->i_cplx_sum [pict_type] += rce->i_tex_bits*rce->qscale; @@ -692,7 +692,7 @@ float ff_rate_estimate_qscale(MpegEncContext *s) bits= rce->i_tex_bits + rce->p_tex_bits; rate_factor= rcc->pass1_wanted_bits/rcc->pass1_rc_eq_output_sum * br_compensation; - + q= get_qscale(s, rce, rate_factor, picture_number); assert(q>0.0); @@ -712,7 +712,7 @@ float ff_rate_estimate_qscale(MpegEncContext *s) //printf("%f ", q); } assert(q>0.0); - + q= modify_qscale(s, rce, q, picture_number); rcc->pass1_wanted_bits+= s->bit_rate/fps; @@ -727,14 +727,14 @@ float ff_rate_estimate_qscale(MpegEncContext *s) ); } - if (q<qmin) q=qmin; + if (q<qmin) q=qmin; else if(q>qmax) q=qmax; if(s->adaptive_quant) adaptive_quantization(s, q); else q= (int)(q + 0.5); - + rcc->last_qscale= q; rcc->last_mc_mb_var_sum= pic->mc_mb_var_sum; rcc->last_mb_var_sum= pic->mb_var_sum; @@ -767,14 +767,14 @@ static int init_pass2(MpegEncContext *s) double rate_factor=0; double step; //int last_i_frame=-10000000; - const int filter_size= (int)(a->qblur*4) | 1; + const int filter_size= (int)(a->qblur*4) | 1; double expected_bits; double *qscale, *blured_qscale; /* find complexity & const_bits & decide the pict_types */ for(i=0; i<rcc->num_entries; i++){ RateControlEntry *rce= &rcc->entry[i]; - + rce->new_pict_type= rce->pict_type; rcc->i_cplx_sum [rce->pict_type] += rce->i_tex_bits*rce->qscale; rcc->p_cplx_sum [rce->pict_type] += rce->p_tex_bits*rce->qscale; @@ -785,27 +785,27 @@ static int init_pass2(MpegEncContext *s) const_bits[rce->new_pict_type]+= rce->mv_bits + rce->misc_bits; } all_const_bits= const_bits[I_TYPE] + const_bits[P_TYPE] + const_bits[B_TYPE]; - + if(all_available_bits < all_const_bits){ av_log(s->avctx, AV_LOG_ERROR, "requested bitrate is to low\n"); return -1; } - + /* find average quantizers */ avg_quantizer[P_TYPE]=0; for(step=256*256; step>0.0000001; step*=0.5){ double expected_bits=0; avg_quantizer[P_TYPE]+= step; - + avg_quantizer[I_TYPE]= avg_quantizer[P_TYPE]*ABS(s->avctx->i_quant_factor) + s->avctx->i_quant_offset; avg_quantizer[B_TYPE]= avg_quantizer[P_TYPE]*ABS(s->avctx->b_quant_factor) + s->avctx->b_quant_offset; - - expected_bits= - + all_const_bits + + expected_bits= + + all_const_bits + complexity[I_TYPE]/avg_quantizer[I_TYPE] + complexity[P_TYPE]/avg_quantizer[P_TYPE] + complexity[B_TYPE]/avg_quantizer[B_TYPE]; - + if(expected_bits < all_available_bits) avg_quantizer[P_TYPE]-= step; //printf("%f %lld %f\n", expected_bits, all_available_bits, avg_quantizer[P_TYPE]); } @@ -815,14 +815,14 @@ static int init_pass2(MpegEncContext *s) available_bits[i]= const_bits[i] + complexity[i]/avg_quantizer[i]; } //printf("%lld %lld %lld %lld\n", available_bits[I_TYPE], available_bits[P_TYPE], available_bits[B_TYPE], all_available_bits); - + qscale= av_malloc(sizeof(double)*rcc->num_entries); blured_qscale= av_malloc(sizeof(double)*rcc->num_entries); for(step=256*256; step>0.0000001; step*=0.5){ expected_bits=0; rate_factor+= step; - + rcc->buffer_index= s->avctx->rc_buffer_size/2; /* find qscale */ @@ -834,7 +834,7 @@ static int init_pass2(MpegEncContext *s) /* fixed I/B QP relative to P mode */ for(i=rcc->num_entries-1; i>=0; i--){ RateControlEntry *rce= &rcc->entry[i]; - + qscale[i]= get_diff_limited_q(s, rce, qscale[i]); } @@ -844,12 +844,12 @@ static int init_pass2(MpegEncContext *s) const int pict_type= rce->new_pict_type; int j; double q=0.0, sum=0.0; - + for(j=0; j<filter_size; j++){ int index= i+j-filter_size/2; double d= index-i; double coeff= a->qblur==0 ? 1.0 : exp(-d*d/(a->qblur * a->qblur)); - + if(index < 0 || index >= rcc->num_entries) continue; if(pict_type != rcc->entry[index].new_pict_type) continue; q+= qscale[index] * coeff; @@ -857,7 +857,7 @@ static int init_pass2(MpegEncContext *s) } blured_qscale[i]= q/sum; } - + /* find expected bits */ for(i=0; i<rcc->num_entries; i++){ RateControlEntry *rce= &rcc->entry[i]; |