/*
* Rate control for video encoders
*
- * Copyright (c) 2002-2003 Michael Niedermayer <michaelni@gmx.at>
+ * Copyright (c) 2002-2004 Michael Niedermayer <michaelni@gmx.at>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
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:%d 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,
+ 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->f_code, s->b_code, s->current_picture.mc_mb_var_sum, s->current_picture.mb_var_sum, s->i_count);
}
p= strchr(p+1, ';');
}
i+= s->max_b_frames;
+ if(i<=0 || i>=INT_MAX / sizeof(RateControlEntry))
+ return -1;
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) */
+ /* 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];
rce->pict_type= rce->new_pict_type=P_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);
+ rcc->pass1_wanted_bits+= s->bit_rate/(1/av_q2d(s->avctx->time_base)); //FIXME missbehaves a little for variable fps
}
}
return rce->qscale * (double)(rce->i_tex_bits + rce->p_tex_bits+1)/ bits;
}
-static void update_rc_buffer(MpegEncContext *s, int frame_size){
+int ff_vbv_update(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 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("%f %f %d %f %f\n", buffer_size, rcc->buffer_index, frame_size, min_rate, max_rate);
+
+//printf("%d %f %d %f %f\n", buffer_size, rcc->buffer_index, frame_size, min_rate, max_rate);
if(buffer_size){
int left;
left= buffer_size - rcc->buffer_index - 1;
rcc->buffer_index += clip(left, min_rate, max_rate);
- if(rcc->buffer_index > s->avctx->rc_buffer_size){
- av_log(s->avctx, AV_LOG_ERROR, "rc buffer overflow\n");
- rcc->buffer_index= s->avctx->rc_buffer_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);
+
+ return stuffing;
}
}
+ return 0;
}
/**
*/
static double get_qscale(MpegEncContext *s, RateControlEntry *rce, double rate_factor, int frame_num){
RateControlContext *rcc= &s->rc_context;
+ AVCodecContext *a= s->avctx;
double q, bits;
const int pict_type= rce->new_pict_type;
const double mb_num= s->mb_num;
rce->pict_type == P_TYPE,
rce->pict_type == B_TYPE,
rcc->qscale_sum[pict_type] / (double)rcc->frame_count[pict_type],
- s->qcompress,
+ a->qcompress,
/* rcc->last_qscale_for[I_TYPE],
rcc->last_qscale_for[P_TYPE],
rcc->last_qscale_for[B_TYPE],
double bits;
const int pict_type= rce->new_pict_type;
const double buffer_size= s->avctx->rc_buffer_size;
- const double fps= (double)s->avctx->frame_rate / (double)s->avctx->frame_rate_base;
+ 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;
/* buffer overflow/underflow protection */
if(buffer_size){
double expected_size= rcc->buffer_index;
+ double q_limit;
if(min_rate){
double d= 2*(buffer_size - expected_size)/buffer_size;
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)*3, 1)));
+ q_limit= bits2qp(rce, FFMAX((min_rate - buffer_size + rcc->buffer_index)*3, 1));
+ if(q > q_limit){
+ if(s->avctx->debug&FF_DEBUG_RC){
+ av_log(s->avctx, AV_LOG_DEBUG, "limiting QP %f -> %f\n", q, q_limit);
+ }
+ q= q_limit;
+ }
}
if(max_rate){
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/3, 1)));
+ q_limit= bits2qp(rce, FFMAX(rcc->buffer_index/3, 1));
+ if(q < q_limit){
+ if(s->avctx->debug&FF_DEBUG_RC){
+ av_log(s->avctx, AV_LOG_DEBUG, "limiting QP %f -> %f\n", q, q_limit);
+ }
+ q= q_limit;
+ }
}
}
//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);
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;
+ const float border_masking = s->avctx->border_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->lmin;
- const int qmax= s->avctx->lmax;
+ const int qmin= s->avctx->mb_lmin;
+ const int qmax= s->avctx->mb_lmax;
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 spat_cplx= sqrt(pic->mb_var[mb_xy]);
const int lumi= pic->mb_mean[mb_xy];
float bits, cplx, factor;
+ int mb_x = mb_xy % s->mb_stride;
+ int mb_y = mb_xy / s->mb_stride;
+ int mb_distance;
+ float mb_factor = 0.0;
#if 0
if(spat_cplx < q/3) spat_cplx= q/3; //FIXME finetune
if(temp_cplx < q/3) temp_cplx= q/3; //FIXME finetune
if(spat_cplx < 4) spat_cplx= 4; //FIXME finetune
if(temp_cplx < 4) temp_cplx= 4; //FIXME finetune
- if((s->mb_type[mb_xy]&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{
factor*= (1.0 - (lumi-128)*(lumi-128)*lumi_masking);
else
factor*= (1.0 - (lumi-128)*(lumi-128)*dark_masking);
+
+ if(mb_x < mb_width/5){
+ mb_distance = mb_width/5 - mb_x;
+ mb_factor = (float)mb_distance / (float)(mb_width/5);
+ }else if(mb_x > 4*mb_width/5){
+ mb_distance = mb_x - 4*mb_width/5;
+ mb_factor = (float)mb_distance / (float)(mb_width/5);
+ }
+ if(mb_y < mb_height/5){
+ mb_distance = mb_height/5 - mb_y;
+ mb_factor = FFMAX(mb_factor, (float)mb_distance / (float)(mb_height/5));
+ }else if(mb_y > 4*mb_height/5){
+ mb_distance = mb_y - 4*mb_height/5;
+ mb_factor = FFMAX(mb_factor, (float)mb_distance / (float)(mb_height/5));
+ }
+
+ factor*= 1.0 - border_masking*mb_factor;
if(factor<0.00001) factor= 0.00001;
/* handle qmin/qmax cliping */
if(s->flags&CODEC_FLAG_NORMALIZE_AQP){
+ float factor= bits_sum/cplx_sum;
for(i=0; i<s->mb_num; i++){
float newq= q*cplx_tab[i]/bits_tab[i];
- newq*= bits_sum/cplx_sum;
+ newq*= factor;
if (newq > qmax){
bits_sum -= bits_tab[i];
cplx_sum -= cplx_tab[i]*q/qmin;
}
}
+ 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++){
int picture_number= s->picture_number;
int64_t wanted_bits;
RateControlContext *rcc= &s->rc_context;
+ AVCodecContext *a= s->avctx;
RateControlEntry local_rce, *rce;
double bits;
double rate_factor;
get_qminmax(&qmin, &qmax, s, pict_type);
- fps= (double)s->avctx->frame_rate / (double)s->avctx->frame_rate_base;
+ fps= 1/av_q2d(s->avctx->time_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){
}
diff= s->total_bits - wanted_bits;
- br_compensation= (s->bit_rate_tolerance - diff)/s->bit_rate_tolerance;
+ br_compensation= (a->bit_rate_tolerance - diff)/a->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;
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;
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*=a->qblur;
+ rcc->short_term_qcount*=a->qblur;
rcc->short_term_qsum+= q;
rcc->short_term_qcount++;
static int init_pass2(MpegEncContext *s)
{
RateControlContext *rcc= &s->rc_context;
+ AVCodecContext *a= s->avctx;
int i;
- double fps= (double)s->avctx->frame_rate / (double)s->avctx->frame_rate_base;
+ double fps= 1/av_q2d(s->avctx->time_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
double rate_factor=0;
double step;
//int last_i_frame=-10000000;
- const int filter_size= (int)(s->qblur*4) | 1;
+ const int filter_size= (int)(a->qblur*4) | 1;
double expected_bits;
double *qscale, *blured_qscale;
for(j=0; j<filter_size; j++){
int index= i+j-filter_size/2;
double d= index-i;
- double coeff= s->qblur==0 ? 1.0 : exp(-d*d/(s->qblur * s->qblur));
+ 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;
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);
+ bits += 8*ff_vbv_update(s, bits);
rce->expected_bits= expected_bits;
expected_bits += bits;
projects / ffmpeg / blobdiff