X-Git-Url: https://git.pterodactylus.net/?a=blobdiff_plain;f=synfig-core%2Ftags%2Fsynfig_0_61_04%2Fsynfig-core%2Fsrc%2Fmodules%2Fmod_libavcodec%2Flibavcodec%2Fratecontrol.c;fp=synfig-core%2Ftags%2Fsynfig_0_61_04%2Fsynfig-core%2Fsrc%2Fmodules%2Fmod_libavcodec%2Flibavcodec%2Fratecontrol.c;h=0000000000000000000000000000000000000000;hb=3a6643238c67c043fc3592837a05d6d2861967f1;hp=2aeb12b3e02d272344d850440820de901c889dcc;hpb=47fce282611fbba1044921d22ca887f9b53ad91a;p=synfig.git diff --git a/synfig-core/tags/synfig_0_61_04/synfig-core/src/modules/mod_libavcodec/libavcodec/ratecontrol.c b/synfig-core/tags/synfig_0_61_04/synfig-core/src/modules/mod_libavcodec/libavcodec/ratecontrol.c deleted file mode 100644 index 2aeb12b..0000000 --- a/synfig-core/tags/synfig_0_61_04/synfig-core/src/modules/mod_libavcodec/libavcodec/ratecontrol.c +++ /dev/null @@ -1,835 +0,0 @@ -/* - * Rate control for video encoders - * - * Copyright (c) 2002 Michael Niedermayer - * - * This library is free software; you can redistribute it and/or - * modify it under the terms of the GNU Lesser General Public - * License as published by the Free Software Foundation; either - * version 2 of the License, or (at your option) any later version. - * - * This library is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - * Lesser General Public License for more details. - * - * You should have received a copy of the GNU Lesser General Public - * License along with this library; if not, write to the Free Software - * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA - */ - -/** - * @file ratecontrol.c - * Rate control for video encoders. - */ - -#include "avcodec.h" -#include "dsputil.h" -#include "mpegvideo.h" - -#undef NDEBUG // allways check asserts, the speed effect is far too small to disable them -#include - -#ifndef M_E -#define M_E 2.718281828 -#endif - -static int init_pass2(MpegEncContext *s); -static double get_qscale(MpegEncContext *s, RateControlEntry *rce, double rate_factor, int frame_num); - -void ff_write_pass1_stats(MpegEncContext *s){ - sprintf(s->avctx->stats_out, "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;\n", - s->picture_number, s->input_picture_number - s->max_b_frames, s->pict_type, - s->frame_qscale, 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); -} - -int ff_rate_control_init(MpegEncContext *s) -{ - RateControlContext *rcc= &s->rc_context; - int i; - emms_c(); - - for(i=0; i<5; i++){ - rcc->pred[i].coeff= 7.0; - rcc->pred[i].count= 1.0; - - rcc->pred[i].decay= 0.4; - rcc->i_cplx_sum [i]= - rcc->p_cplx_sum [i]= - rcc->mv_bits_sum[i]= - rcc->qscale_sum [i]= - rcc->frame_count[i]= 1; // 1 is better cuz of 1/0 and such - rcc->last_qscale_for[i]=5; - } - rcc->buffer_index= s->avctx->rc_buffer_size/2; - - if(s->flags&CODEC_FLAG_PASS2){ - int i; - char *p; - - /* find number of pics */ - p= s->avctx->stats_in; - for(i=-1; p; i++){ - p= strchr(p+1, ';'); - } - i+= s->max_b_frames; - rcc->entry = (RateControlEntry*)av_mallocz(i*sizeof(RateControlEntry)); - rcc->num_entries= i; - - /* init all to skiped p frames (with b frames we might have a not encoded frame at the end FIXME) */ - for(i=0; inum_entries; i++){ - RateControlEntry *rce= &rcc->entry[i]; - rce->pict_type= rce->new_pict_type=P_TYPE; - rce->qscale= rce->new_qscale=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; inum_entries - s->max_b_frames; i++){ - RateControlEntry *rce; - int picture_number; - int e; - char *next; - - next= strchr(p, ';'); - if(next){ - (*next)=0; //sscanf in unbelieavle slow on looong strings //FIXME copy / dont write - next++; - } - e= sscanf(p, " in:%d ", &picture_number); - - assert(picture_number >= 0); - assert(picture_number < rcc->num_entries); - 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->f_code, &rce->b_code, &rce->mc_mb_var_sum, &rce->mb_var_sum, &rce->i_count); - if(e!=12){ - fprintf(stderr, "statistics are damaged at line %d, parser out=%d\n", i, e); - return -1; - } - 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; - - rce.new_pict_type= rce.pict_type; - rce.mc_mb_var_sum= bits*s->mb_num/100000; - rce.mb_var_sum = s->mb_num; - rce.qscale = 2; - rce.f_code = 2; - rce.b_code = 1; - rce.misc_bits= 1; - - if(s->pict_type== I_TYPE){ - rce.i_count = s->mb_num; - rce.i_tex_bits= bits; - rce.p_tex_bits= 0; - rce.mv_bits= 0; - }else{ - 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 [rce.pict_type] += rce.i_tex_bits*rce.qscale; - rcc->p_cplx_sum [rce.pict_type] += rce.p_tex_bits*rce.qscale; - rcc->mv_bits_sum[rce.pict_type] += rce.mv_bits; - rcc->frame_count[rce.pict_type] ++; - - bits= rce.i_tex_bits + rce.p_tex_bits; - - q= get_qscale(s, &rce, rcc->pass1_wanted_bits/rcc->pass1_rc_eq_output_sum, i); - rcc->pass1_wanted_bits+= s->bit_rate/(s->avctx->frame_rate / (double)s->avctx->frame_rate_base); - } - } - - } - - return 0; -} - -void ff_rate_control_uninit(MpegEncContext *s) -{ - RateControlContext *rcc= &s->rc_context; - emms_c(); - - av_freep(&rcc->entry); -} - -static inline double qp2bits(RateControlEntry *rce, double qp){ - if(qp<=0.0){ - fprintf(stderr, "qp<=0.0\n"); - } - return rce->qscale * (double)(rce->i_tex_bits + rce->p_tex_bits+1)/ qp; -} - -static inline double bits2qp(RateControlEntry *rce, double bits){ - if(bits<0.9){ - fprintf(stderr, "bits<0.9\n"); - } - return rce->qscale * (double)(rce->i_tex_bits + rce->p_tex_bits+1)/ bits; -} - -static void update_rc_buffer(MpegEncContext *s, int frame_size){ - RateControlContext *rcc= &s->rc_context; - const double fps= (double)s->avctx->frame_rate / (double)s->avctx->frame_rate_base; - const double 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; - - if(buffer_size){ - rcc->buffer_index-= frame_size; - if(rcc->buffer_index < buffer_size/2 /*FIXME /2 */ || min_rate==0){ - rcc->buffer_index+= max_rate; - if(rcc->buffer_index >= buffer_size) - rcc->buffer_index= buffer_size-1; - }else{ - rcc->buffer_index+= min_rate; - } - - if(rcc->buffer_index < 0) - fprintf(stderr, "rc buffer underflow\n"); - if(rcc->buffer_index >= s->avctx->rc_buffer_size) - fprintf(stderr, "rc buffer overflow\n"); - } -} - -/** - * modifies the bitrate curve from pass1 for one frame - */ -static double get_qscale(MpegEncContext *s, RateControlEntry *rce, double rate_factor, int frame_num){ - RateControlContext *rcc= &s->rc_context; - double q, bits; - const int pict_type= rce->new_pict_type; - const double mb_num= s->mb_num; - int i; - - double const_values[]={ - M_PI, - M_E, - rce->i_tex_bits*rce->qscale, - rce->p_tex_bits*rce->qscale, - (rce->i_tex_bits + rce->p_tex_bits)*(double)rce->qscale, - rce->mv_bits/mb_num, - rce->pict_type == B_TYPE ? (rce->f_code + rce->b_code)*0.5 : rce->f_code, - rce->i_count/mb_num, - rce->mc_mb_var_sum/mb_num, - rce->mb_var_sum/mb_num, - rce->pict_type == I_TYPE, - rce->pict_type == P_TYPE, - rce->pict_type == B_TYPE, - rcc->qscale_sum[pict_type] / (double)rcc->frame_count[pict_type], - s->qcompress, -/* rcc->last_qscale_for[I_TYPE], - rcc->last_qscale_for[P_TYPE], - rcc->last_qscale_for[B_TYPE], - rcc->next_non_b_qscale,*/ - rcc->i_cplx_sum[I_TYPE] / (double)rcc->frame_count[I_TYPE], - rcc->i_cplx_sum[P_TYPE] / (double)rcc->frame_count[P_TYPE], - rcc->p_cplx_sum[P_TYPE] / (double)rcc->frame_count[P_TYPE], - rcc->p_cplx_sum[B_TYPE] / (double)rcc->frame_count[B_TYPE], - (rcc->i_cplx_sum[pict_type] + rcc->p_cplx_sum[pict_type]) / (double)rcc->frame_count[pict_type], - 0 - }; - static const char *const_names[]={ - "PI", - "E", - "iTex", - "pTex", - "tex", - "mv", - "fCode", - "iCount", - "mcVar", - "var", - "isI", - "isP", - "isB", - "avgQP", - "qComp", -/* "lastIQP", - "lastPQP", - "lastBQP", - "nextNonBQP",*/ - "avgIITex", - "avgPITex", - "avgPPTex", - "avgBPTex", - "avgTex", - NULL - }; - static double (*func1[])(void *, double)={ - (void *)bits2qp, - (void *)qp2bits, - NULL - }; - static const char *func1_names[]={ - "bits2qp", - "qp2bits", - NULL - }; - - 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; iavctx->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) - 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; -} - -static double get_diff_limited_q(MpegEncContext *s, RateControlEntry *rce, double q){ - RateControlContext *rcc= &s->rc_context; - AVCodecContext *a= s->avctx; - 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) - q= last_non_b_q* a->b_quant_factor + a->b_quant_offset; - - /* last qscale / qdiff stuff */ - if(rcc->last_non_b_pict_type==pict_type || pict_type!=I_TYPE){ - double last_q= rcc->last_qscale_for[pict_type]; - - if (q > last_q + a->max_qdiff) q= last_q + a->max_qdiff; - else if(q < last_q - a->max_qdiff) q= last_q - a->max_qdiff; - } - - 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; - - return q; -} - -/** - * 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->qmin; - int qmax= s->avctx->qmax; - - assert(qmin <= qmax); - - if(pict_type==B_TYPE){ - qmin= (int)(qmin*ABS(s->avctx->b_quant_factor)+s->avctx->b_quant_offset + 0.5); - qmax= (int)(qmax*ABS(s->avctx->b_quant_factor)+s->avctx->b_quant_offset + 0.5); - }else if(pict_type==I_TYPE){ - qmin= (int)(qmin*ABS(s->avctx->i_quant_factor)+s->avctx->i_quant_offset + 0.5); - qmax= (int)(qmax*ABS(s->avctx->i_quant_factor)+s->avctx->i_quant_offset + 0.5); - } - - qmin= clip(qmin, 1, 31); - qmax= clip(qmax, 1, 31); - - if(qmin==1 && s->avctx->qmin>1) qmin=2; //avoid qmin=1 unless the user wants qmin=1 - - if(qmin<3 && s->max_qcoeff<=128 && pict_type==I_TYPE) qmin=3; //reduce cliping problems - - if(qmaxrc_context; - int qmin, qmax; - double bits; - const int pict_type= rce->new_pict_type; - const double buffer_size= s->avctx->rc_buffer_size; - const double min_rate= s->avctx->rc_min_rate; - const double max_rate= s->avctx->rc_max_rate; - - get_qminmax(&qmin, &qmax, s, pict_type); - - /* modulation */ - if(s->avctx->rc_qmod_freq && frame_num%s->avctx->rc_qmod_freq==0 && pict_type==P_TYPE) - q*= s->avctx->rc_qmod_amp; - - bits= qp2bits(rce, q); -//printf("q:%f\n", q); - /* buffer overflow/underflow protection */ - if(buffer_size){ - double expected_size= rcc->buffer_index; - - if(min_rate){ - double d= 2*(buffer_size - expected_size)/buffer_size; - if(d>1.0) d=1.0; - else if(d<0.0001) d=0.0001; - q*= pow(d, 1.0/s->avctx->rc_buffer_aggressivity); - - q= FFMIN(q, bits2qp(rce, FFMAX((min_rate - buffer_size + rcc->buffer_index)*2, 1))); - } - - if(max_rate){ - double d= 2*expected_size/buffer_size; - if(d>1.0) d=1.0; - else if(d<0.0001) d=0.0001; - q/= pow(d, 1.0/s->avctx->rc_buffer_aggressivity); - - q= FFMAX(q, bits2qp(rce, FFMAX(rcc->buffer_index/2, 1))); - } - } -//printf("q:%f max:%f min:%f size:%f index:%d bits:%f agr:%f\n", q,max_rate, min_rate, buffer_size, rcc->buffer_index, bits, s->avctx->rc_buffer_aggressivity); - if(s->avctx->rc_qsquish==0.0 || qmin==qmax){ - if (qqmax) q=qmax; - }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; -} - -//---------------------------------- -// 1 Pass Code - -static double predict_size(Predictor *p, double q, double var) -{ - return p->coeff*var / (q*p->count); -} - -/* -static double predict_qp(Predictor *p, double size, double var) -{ -//printf("coeff:%f, count:%f, var:%f, size:%f//\n", p->coeff, p->count, var, size); - return p->coeff*var / (size*p->count); -} -*/ - -static void update_predictor(Predictor *p, double q, double var, double size) -{ - double new_coeff= size*q / (var + 1); - if(var<10) return; - - p->count*= p->decay; - p->coeff*= p->decay; - p->count++; - p->coeff+= new_coeff; -} - -static void adaptive_quantization(MpegEncContext *s, double q){ - int i; - const float lumi_masking= s->avctx->lumi_masking / (128.0*128.0); - const float dark_masking= s->avctx->dark_masking / (128.0*128.0); - const float temp_cplx_masking= s->avctx->temporal_cplx_masking; - const float spatial_cplx_masking = s->avctx->spatial_cplx_masking; - const float p_masking = s->avctx->p_masking; - float bits_sum= 0.0; - float cplx_sum= 0.0; - float cplx_tab[s->mb_num]; - float bits_tab[s->mb_num]; - const int qmin= s->avctx->mb_qmin; - const int qmax= s->avctx->mb_qmax; - Picture * const pic= &s->current_picture; - int last_qscale=0; - - for(i=0; imb_num; i++){ - const int mb_xy= s->mb_index2xy[i]; - float temp_cplx= sqrt(pic->mc_mb_var[mb_xy]); - float spat_cplx= sqrt(pic->mb_var[mb_xy]); - const int lumi= pic->mb_mean[mb_xy]; - float bits, cplx, factor; - - if(spat_cplx < q/3) spat_cplx= q/3; //FIXME finetune - if(temp_cplx < q/3) temp_cplx= q/3; //FIXME finetune - - if((s->mb_type[mb_xy]&MB_TYPE_INTRA)){//FIXME hq mode - cplx= spat_cplx; - factor= 1.0 + p_masking; - }else{ - cplx= temp_cplx; - factor= pow(temp_cplx, - temp_cplx_masking); - } - factor*=pow(spat_cplx, - spatial_cplx_masking); - - if(lumi>127) - factor*= (1.0 - (lumi-128)*(lumi-128)*lumi_masking); - else - factor*= (1.0 - (lumi-128)*(lumi-128)*dark_masking); - - if(factor<0.00001) factor= 0.00001; - - bits= cplx*factor; - cplx_sum+= cplx; - bits_sum+= bits; - cplx_tab[i]= cplx; - bits_tab[i]= bits; - } - - /* handle qmin/qmax cliping */ - if(s->flags&CODEC_FLAG_NORMALIZE_AQP){ - for(i=0; imb_num; i++){ - float newq= q*cplx_tab[i]/bits_tab[i]; - newq*= bits_sum/cplx_sum; - - if (newq > qmax){ - bits_sum -= bits_tab[i]; - cplx_sum -= cplx_tab[i]*q/qmax; - } - else if(newq < qmin){ - bits_sum -= bits_tab[i]; - cplx_sum -= cplx_tab[i]*q/qmin; - } - } - } - - for(i=0; imb_num; i++){ - const int mb_xy= s->mb_index2xy[i]; - float newq= q*cplx_tab[i]/bits_tab[i]; - int intq; - - if(s->flags&CODEC_FLAG_NORMALIZE_AQP){ - newq*= bits_sum/cplx_sum; - } - - if(i && ABS(last_qscale - newq)<0.75) - intq= last_qscale; - else - intq= (int)(newq + 0.5); - - if (intq > qmax) intq= qmax; - else if(intq < qmin) intq= qmin; -//if(i%s->mb_width==0) printf("\n"); -//printf("%2d%3d ", intq, ff_sqrt(s->mc_mb_var[i])); - last_qscale= - pic->qscale_table[mb_xy]= intq; - } -} - -float ff_rate_estimate_qscale(MpegEncContext *s) -{ - float q; - int qmin, qmax; - float br_compensation; - double diff; - double short_term_q; - double fps; - int picture_number= s->picture_number; - int64_t wanted_bits; - RateControlContext *rcc= &s->rc_context; - RateControlEntry local_rce, *rce; - double bits; - double rate_factor; - int var; - const int pict_type= s->pict_type; - Picture * const pic= &s->current_picture; - emms_c(); - - get_qminmax(&qmin, &qmax, s, pict_type); - - fps= (double)s->avctx->frame_rate / (double)s->avctx->frame_rate_base; -//printf("input_pic_num:%d pic_num:%d frame_rate:%d\n", s->input_picture_number, s->picture_number, s->frame_rate); - /* update predictors */ - if(picture_number>2){ - const int last_var= s->last_pict_type == I_TYPE ? rcc->last_mb_var_sum : rcc->last_mc_mb_var_sum; - update_predictor(&rcc->pred[s->last_pict_type], rcc->last_qscale, sqrt(last_var), s->frame_bits); - } - - if(s->flags&CODEC_FLAG_PASS2){ - assert(picture_number>=0); - assert(picture_numbernum_entries); - rce= &rcc->entry[picture_number]; - wanted_bits= rce->expected_bits; - }else{ - rce= &local_rce; - wanted_bits= (uint64_t)(s->bit_rate*(double)picture_number/fps); - } - - diff= s->total_bits - wanted_bits; - br_compensation= (s->bit_rate_tolerance - diff)/s->bit_rate_tolerance; - 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) - assert(pict_type == rce->new_pict_type); - - 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->new_pict_type= pict_type; - rce->mc_mb_var_sum= pic->mc_mb_var_sum; - rce->mb_var_sum = pic-> mb_var_sum; - rce->qscale = 2; - rce->f_code = s->f_code; - rce->b_code = s->b_code; - rce->misc_bits= 1; - - if(picture_number>0) - update_rc_buffer(s, s->frame_bits); - - bits= predict_size(&rcc->pred[pict_type], rce->qscale, sqrt(var)); - if(pict_type== I_TYPE){ - rce->i_count = s->mb_num; - rce->i_tex_bits= bits; - rce->p_tex_bits= 0; - rce->mv_bits= 0; - }else{ - 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; - rcc->p_cplx_sum [pict_type] += rce->p_tex_bits*rce->qscale; - rcc->mv_bits_sum[pict_type] += rce->mv_bits; - rcc->frame_count[pict_type] ++; - - 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); -//printf("%f ", q); - q= get_diff_limited_q(s, rce, q); -//printf("%f ", q); - assert(q>0.0); - - if(pict_type==P_TYPE || s->intra_only){ //FIXME type dependant blur like in 2-pass - rcc->short_term_qsum*=s->qblur; - rcc->short_term_qcount*=s->qblur; - - rcc->short_term_qsum+= q; - rcc->short_term_qcount++; -//printf("%f ", q); - q= short_term_q= rcc->short_term_qsum/rcc->short_term_qcount; -//printf("%f ", q); - } - assert(q>0.0); - - q= modify_qscale(s, rce, q, picture_number); - - rcc->pass1_wanted_bits+= s->bit_rate/fps; - - assert(q>0.0); - } - - if(s->avctx->debug&FF_DEBUG_RC){ - printf("%c qp:%d<%2.1f<%d %d want:%d total:%d comp:%f st_q:%2.2f size:%d var:%d/%d br:%d fps:%d\n", - av_get_pict_type_char(pict_type), qmin, q, qmax, picture_number, (int)wanted_bits/1000, (int)s->total_bits/1000, - br_compensation, short_term_q, s->frame_bits, pic->mb_var_sum, pic->mc_mb_var_sum, s->bit_rate/1000, (int)fps - ); - } - - if (qqmax) 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; -#if 0 -{ - static int mvsum=0, texsum=0; - mvsum += s->mv_bits; - texsum += s->i_tex_bits + s->p_tex_bits; - printf("%d %d//\n\n", mvsum, texsum); -} -#endif - return q; -} - -//---------------------------------------------- -// 2-Pass code - -static int init_pass2(MpegEncContext *s) -{ - RateControlContext *rcc= &s->rc_context; - int i; - double fps= (double)s->avctx->frame_rate / (double)s->avctx->frame_rate_base; - double complexity[5]={0,0,0,0,0}; // aproximate bits at quant=1 - double avg_quantizer[5]; - uint64_t const_bits[5]={0,0,0,0,0}; // quantizer idependant bits - uint64_t available_bits[5]; - uint64_t all_const_bits; - uint64_t all_available_bits= (uint64_t)(s->bit_rate*(double)rcc->num_entries/fps); - double rate_factor=0; - double step; - //int last_i_frame=-10000000; - const int filter_size= (int)(s->qblur*4) | 1; - double expected_bits; - double *qscale, *blured_qscale; - - /* find complexity & const_bits & decide the pict_types */ - for(i=0; inum_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; - rcc->mv_bits_sum[rce->pict_type] += rce->mv_bits; - rcc->frame_count[rce->pict_type] ++; - - complexity[rce->new_pict_type]+= (rce->i_tex_bits+ rce->p_tex_bits)*(double)rce->qscale; - 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){ - fprintf(stderr, "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 - + 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]); - } -//printf("qp_i:%f, qp_p:%f, qp_b:%f\n", avg_quantizer[I_TYPE],avg_quantizer[P_TYPE],avg_quantizer[B_TYPE]); - - for(i=0; i<5; i++){ - 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 */ - for(i=0; inum_entries; i++){ - qscale[i]= get_qscale(s, &rcc->entry[i], rate_factor, i); - } - assert(filter_size%2==1); - - /* 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]); - } - - /* smooth curve */ - for(i=0; inum_entries; i++){ - RateControlEntry *rce= &rcc->entry[i]; - const int pict_type= rce->new_pict_type; - int j; - double q=0.0, sum=0.0; - - for(j=0; jqblur==0 ? 1.0 : exp(-d*d/(s->qblur * s->qblur)); - - if(index < 0 || index >= rcc->num_entries) continue; - if(pict_type != rcc->entry[index].new_pict_type) continue; - q+= qscale[index] * coeff; - sum+= coeff; - } - blured_qscale[i]= q/sum; - } - - /* find expected bits */ - for(i=0; inum_entries; i++){ - RateControlEntry *rce= &rcc->entry[i]; - double bits; - rce->new_qscale= modify_qscale(s, rce, blured_qscale[i], i); - bits= qp2bits(rce, rce->new_qscale) + rce->mv_bits + rce->misc_bits; -//printf("%d %f\n", rce->new_bits, blured_qscale[i]); - update_rc_buffer(s, bits); - - rce->expected_bits= expected_bits; - expected_bits += bits; - } - -// printf("%f %d %f\n", expected_bits, (int)all_available_bits, rate_factor); - if(expected_bits > all_available_bits) rate_factor-= step; - } - av_free(qscale); - av_free(blured_qscale); - - if(abs(expected_bits/all_available_bits - 1.0) > 0.01 ){ - fprintf(stderr, "Error: 2pass curve failed to converge\n"); - return -1; - } - - return 0; -}