/*****************************************************************************
* ratecontrol.c: ratecontrol
*****************************************************************************
- * Copyright (C) 2005-2010 x264 project
+ * Copyright (C) 2005-2011 x264 project
*
* Authors: Loren Merritt <lorenm@u.washington.edu>
* Michael Niedermayer <michaelni@gmx.at>
#define _ISOC99_SOURCE
#undef NDEBUG // always check asserts, the speed effect is far too small to disable them
-#include <math.h>
#include "common/common.h"
#include "ratecontrol.h"
x264_weight_t weights[16][3];
int refcount[16];
- if( rce->refs != h->i_ref0 )
+ if( rce->refs != h->i_ref[0] )
return -1;
- memcpy( frames, h->fref0, sizeof(frames) );
+ memcpy( frames, h->fref[0], sizeof(frames) );
memcpy( refcount, rce->refcount, sizeof(refcount) );
memcpy( weights, h->fenc->weight, sizeof(weights) );
memset( &h->fenc->weight[1][0], 0, sizeof(x264_weight_t[15][3]) );
/* For now don't reorder ref 0; it seems to lower quality
in most cases due to skips. */
- for( int ref = 1; ref < h->i_ref0; ref++ )
+ for( int ref = 1; ref < h->i_ref[0]; ref++ )
{
int max = -1;
int bestref = 1;
- for( int i = 1; i < h->i_ref0; i++ )
+ for( int i = 1; i < h->i_ref[0]; i++ )
/* Favor lower POC as a tiebreaker. */
COPY2_IF_GT( max, refcount[i], bestref, i );
* that the optimal ordering doesnt place every duplicate. */
refcount[bestref] = -1;
- h->fref0[ref] = frames[bestref];
+ h->fref[0][ref] = frames[bestref];
memcpy( h->fenc->weight[ref], weights[bestref], sizeof(weights[bestref]) );
}
if( h->param.rc.i_vbv_max_bitrate > 0 && h->param.rc.i_vbv_buffer_size > 0 )
{
+ /* We don't support changing the ABR bitrate right now,
+ so if the stream starts as CBR, keep it CBR. */
+ if( rc->b_vbv_min_rate )
+ h->param.rc.i_vbv_max_bitrate = h->param.rc.i_bitrate;
+
if( h->param.rc.i_vbv_buffer_size < (int)(h->param.rc.i_vbv_max_bitrate / rc->fps) )
{
h->param.rc.i_vbv_buffer_size = h->param.rc.i_vbv_max_bitrate / rc->fps;
h->param.rc.i_vbv_buffer_size );
}
- /* We don't support changing the ABR bitrate right now,
- so if the stream starts as CBR, keep it CBR. */
- if( rc->b_vbv_min_rate )
- h->param.rc.i_vbv_max_bitrate = h->param.rc.i_bitrate;
-
int vbv_buffer_size = h->param.rc.i_vbv_buffer_size * 1000;
int vbv_max_bitrate = h->param.rc.i_vbv_max_bitrate * 1000;
/* Init HRD */
- h->sps->vui.hrd.i_bit_rate_unscaled = vbv_max_bitrate;
- h->sps->vui.hrd.i_cpb_size_unscaled = vbv_buffer_size;
if( h->param.i_nal_hrd && b_init )
{
h->sps->vui.hrd.i_cpb_cnt = 1;
x264_log( h, X264_LOG_WARNING, "VBV parameters cannot be changed when NAL HRD is in use\n" );
return;
}
+ h->sps->vui.hrd.i_bit_rate_unscaled = vbv_max_bitrate;
+ h->sps->vui.hrd.i_cpb_size_unscaled = vbv_buffer_size;
+ if( rc->b_vbv_min_rate )
+ rc->bitrate = h->param.rc.i_bitrate * 1000.;
rc->buffer_rate = vbv_max_bitrate / rc->fps;
rc->vbv_max_rate = vbv_max_bitrate;
rc->buffer_size = vbv_buffer_size;
CMP_OPT_FIRST_PASS( "bframes", h->param.i_bframe );
CMP_OPT_FIRST_PASS( "b_pyramid", h->param.i_bframe_pyramid );
CMP_OPT_FIRST_PASS( "intra_refresh", h->param.b_intra_refresh );
- CMP_OPT_FIRST_PASS( "open_gop", h->param.i_open_gop );
+ CMP_OPT_FIRST_PASS( "open_gop", h->param.b_open_gop );
+ CMP_OPT_FIRST_PASS( "bluray_compat", h->param.b_bluray_compat );
if( (p = strstr( opts, "keyint=" )) )
{
char *tok, UNUSED *saveptr=NULL;
z->param = NULL;
z->f_bitrate_factor = 1;
- if( 3 <= sscanf(p, "%u,%u,q=%u%n", &z->i_start, &z->i_end, &z->i_qp, &len) )
+ if( 3 <= sscanf(p, "%d,%d,q=%d%n", &z->i_start, &z->i_end, &z->i_qp, &len) )
z->b_force_qp = 1;
- else if( 3 <= sscanf(p, "%u,%u,b=%f%n", &z->i_start, &z->i_end, &z->f_bitrate_factor, &len) )
+ else if( 3 <= sscanf(p, "%d,%d,b=%f%n", &z->i_start, &z->i_end, &z->f_bitrate_factor, &len) )
z->b_force_qp = 0;
- else if( 2 <= sscanf(p, "%u,%u%n", &z->i_start, &z->i_end, &len) )
+ else if( 2 <= sscanf(p, "%d,%d%n", &z->i_start, &z->i_end, &len) )
z->b_force_qp = 0;
else
{
int mincr = l->mincr;
- /* Blu-ray requires this */
- if( l->level_idc == 41 && h->param.i_nal_hrd )
+ if( h->param.b_bluray_compat )
mincr = 4;
/* High 10 doesn't require minCR, so just set the maximum to a large value. */
rc->qpa_rc =
rc->qpa_aq = 0;
- rc->qp = x264_clip3( (int)(q + 0.5), 0, QP_MAX );
+ rc->qp = x264_clip3( q + 0.5f, 0, QP_MAX );
h->fdec->f_qp_avg_rc =
h->fdec->f_qp_avg_aq =
rc->qpm = q;
x264_ratecontrol_t *rc = h->rc;
double pred_s = predict_size( rc->row_pred[0], qp2qscale( qp ), h->fdec->i_row_satd[y] );
double pred_t = 0;
- if( h->sh.i_type == SLICE_TYPE_I || qp >= h->fref0[0]->f_row_qp[y] )
+ if( h->sh.i_type == SLICE_TYPE_I || qp >= h->fref[0][0]->f_row_qp[y] )
{
if( h->sh.i_type == SLICE_TYPE_P
- && h->fref0[0]->i_type == h->fdec->i_type
- && h->fref0[0]->i_row_satd[y] > 0
- && (abs(h->fref0[0]->i_row_satd[y] - h->fdec->i_row_satd[y]) < h->fdec->i_row_satd[y]/2))
+ && h->fref[0][0]->i_type == h->fdec->i_type
+ && h->fref[0][0]->i_row_satd[y] > 0
+ && (abs(h->fref[0][0]->i_row_satd[y] - h->fdec->i_row_satd[y]) < h->fdec->i_row_satd[y]/2))
{
- pred_t = h->fref0[0]->i_row_bits[y] * h->fdec->i_row_satd[y] / h->fref0[0]->i_row_satd[y]
- * qp2qscale( h->fref0[0]->f_row_qp[y] ) / qp2qscale( qp );
+ pred_t = h->fref[0][0]->i_row_bits[y] * h->fdec->i_row_satd[y] / h->fref[0][0]->i_row_satd[y]
+ * qp2qscale( h->fref[0][0]->f_row_qp[y] ) / qp2qscale( qp );
}
if( pred_t == 0 )
pred_t = pred_s;
h->fdec->f_row_qp[y] = rc->qpm;
update_predictor( rc->row_pred[0], qp2qscale( rc->qpm ), h->fdec->i_row_satd[y], h->fdec->i_row_bits[y] );
- if( h->sh.i_type == SLICE_TYPE_P && rc->qpm < h->fref0[0]->f_row_qp[y] )
+ if( h->sh.i_type == SLICE_TYPE_P && rc->qpm < h->fref[0][0]->f_row_qp[y] )
update_predictor( rc->row_pred[1], qp2qscale( rc->qpm ), h->fdec->i_row_satds[0][0][y], h->fdec->i_row_bits[y] );
/* tweak quality based on difference from predicted size */
/* B-frames shouldn't use lower QP than their reference frames. */
if( h->sh.i_type == SLICE_TYPE_B )
{
- qp_min = X264_MAX( qp_min, X264_MAX( h->fref0[0]->f_row_qp[y+1], h->fref1[0]->f_row_qp[y+1] ) );
+ qp_min = X264_MAX( qp_min, X264_MAX( h->fref[0][0]->f_row_qp[y+1], h->fref[1][0]->f_row_qp[y+1] ) );
rc->qpm = X264_MAX( rc->qpm, qp_min );
}
int x264_ratecontrol_qp( x264_t *h )
{
x264_emms();
- return x264_clip3( h->rc->qpm + .5, h->param.rc.i_qp_min, h->param.rc.i_qp_max );
+ return x264_clip3( h->rc->qpm + 0.5f, h->param.rc.i_qp_min, h->param.rc.i_qp_max );
}
int x264_ratecontrol_mb_qp( x264_t *h )
x264_emms();
float qp = h->rc->qpm;
if( h->param.rc.i_aq_mode )
- /* MB-tree currently doesn't adjust quantizers in unreferenced frames. */
- qp += h->fdec->b_kept_as_ref ? h->fenc->f_qp_offset[h->mb.i_mb_xy] : h->fenc->f_qp_offset_aq[h->mb.i_mb_xy];
- return x264_clip3( qp + .5, h->param.rc.i_qp_min, h->param.rc.i_qp_max );
+ {
+ /* MB-tree currently doesn't adjust quantizers in unreferenced frames. */
+ float qp_offset = h->fdec->b_kept_as_ref ? h->fenc->f_qp_offset[h->mb.i_mb_xy] : h->fenc->f_qp_offset_aq[h->mb.i_mb_xy];
+ /* Scale AQ's effect towards zero in emergency mode. */
+ if( qp > QP_MAX_SPEC )
+ qp_offset *= (QP_MAX - qp) / (QP_MAX - QP_MAX_SPEC);
+ qp += qp_offset;
+ }
+ return x264_clip3( qp + 0.5f, h->param.rc.i_qp_min, h->param.rc.i_qp_max );
}
/* In 2pass, force the same frame types as in the 1st pass */
/* Only write information for reference reordering once. */
int use_old_stats = h->param.rc.b_stat_read && rc->rce->refs > 1;
- for( int i = 0; i < (use_old_stats ? rc->rce->refs : h->i_ref0); i++ )
+ for( int i = 0; i < (use_old_stats ? rc->rce->refs : h->i_ref[0]); i++ )
{
int refcount = use_old_stats ? rc->rce->refcount[i]
: h->param.b_interlaced ? h->stat.frame.i_mb_count_ref[0][i*2]
rc->cplxr_sum += bits * qp2qscale( rc->qpa_rc ) / (rc->last_rceq * fabs( h->param.rc.f_pb_factor ));
}
rc->cplxr_sum *= rc->cbr_decay;
- double frame_duration = (double)h->fenc->i_duration * h->sps->vui.i_num_units_in_tick / h->sps->vui.i_time_scale;
-
- rc->wanted_bits_window += frame_duration * rc->bitrate;
+ rc->wanted_bits_window += h->fenc->f_duration * rc->bitrate;
rc->wanted_bits_window *= rc->cbr_decay;
}
if( h->fenc->b_last_minigop_bframe )
{
update_predictor( rc->pred_b_from_p, qp2qscale( rc->qpa_rc ),
- h->fref1[h->i_ref1-1]->i_satd, rc->bframe_bits / rc->bframes );
+ h->fref[1][h->i_ref[1]-1]->i_satd, rc->bframe_bits / rc->bframes );
rc->bframe_bits = 0;
}
}
{
x264_ratecontrol_t *rcc= h->rc;
x264_zone_t *zone = get_zone( h, frame_num );
- double q = pow( rce->blurred_complexity, 1 - rcc->qcompress );
+ double q;
+ if( h->param.rc.b_mb_tree )
+ {
+ double timescale = (double)h->sps->vui.i_num_units_in_tick / h->sps->vui.i_time_scale;
+ q = pow( BASE_FRAME_DURATION / CLIP_DURATION(rce->i_duration * timescale), 1 - h->param.rc.f_qcompress );
+ }
+ else
+ q = pow( rce->blurred_complexity, 1 - rcc->qcompress );
// avoid NaN's in the rc_eq
if( !isfinite(q) || rce->tex_bits + rce->mv_bits == 0 )
return q;
}
-static double get_diff_limited_q(x264_t *h, ratecontrol_entry_t *rce, double q)
+static double get_diff_limited_q(x264_t *h, ratecontrol_entry_t *rce, double q, int frame_num)
{
x264_ratecontrol_t *rcc = h->rc;
const int pict_type = rce->pict_type;
+ x264_zone_t *zone = get_zone( h, frame_num );
// force I/B quants as a function of P quants
const double last_p_q = rcc->last_qscale_for[SLICE_TYPE_P];
rcc->accum_p_qp = mask * (qscale2qp( q ) + rcc->accum_p_qp);
rcc->accum_p_norm = mask * (1 + rcc->accum_p_norm);
}
+
+ if( zone )
+ {
+ if( zone->b_force_qp )
+ q = qp2qscale( zone->i_qp );
+ else
+ q /= zone->f_bitrate_factor;
+ }
+
return q;
}
if( h->sps->vui.hrd.b_cbr_hrd && rct->buffer_fill_final > buffer_size )
{
- filler = ceil( (rct->buffer_fill_final - buffer_size) / (8. * h->sps->vui.i_time_scale) );
+ int64_t scale = (int64_t)h->sps->vui.i_time_scale * 8;
+ filler = (rct->buffer_fill_final - buffer_size + scale - 1) / scale;
bits = X264_MAX( (FILLER_OVERHEAD - h->param.b_annexb), filler ) * 8;
rct->buffer_fill_final -= (uint64_t)bits * h->sps->vui.i_time_scale;
}
/* B-frames don't have independent ratecontrol, but rather get the
* average QP of the two adjacent P-frames + an offset */
- int i0 = IS_X264_TYPE_I(h->fref0[0]->i_type);
- int i1 = IS_X264_TYPE_I(h->fref1[0]->i_type);
- int dt0 = abs(h->fenc->i_poc - h->fref0[0]->i_poc);
- int dt1 = abs(h->fenc->i_poc - h->fref1[0]->i_poc);
- float q0 = h->fref0[0]->f_qp_avg_rc;
- float q1 = h->fref1[0]->f_qp_avg_rc;
+ int i0 = IS_X264_TYPE_I(h->fref_nearest[0]->i_type);
+ int i1 = IS_X264_TYPE_I(h->fref_nearest[1]->i_type);
+ int dt0 = abs(h->fenc->i_poc - h->fref_nearest[0]->i_poc);
+ int dt1 = abs(h->fenc->i_poc - h->fref_nearest[1]->i_poc);
+ float q0 = h->fref_nearest[0]->f_qp_avg_rc;
+ float q1 = h->fref_nearest[1]->f_qp_avg_rc;
- if( h->fref0[0]->i_type == X264_TYPE_BREF )
+ if( h->fref_nearest[0]->i_type == X264_TYPE_BREF )
q0 -= rcc->pb_offset/2;
- if( h->fref1[0]->i_type == X264_TYPE_BREF )
+ if( h->fref_nearest[1]->i_type == X264_TYPE_BREF )
q1 -= rcc->pb_offset/2;
if( i0 && i1 )
if( rcc->b_2pass && rcc->b_vbv )
rcc->frame_size_planned = qscale2bits( &rce, qp2qscale( q ) );
else
- rcc->frame_size_planned = predict_size( rcc->pred_b_from_p, qp2qscale( q ), h->fref1[h->i_ref1-1]->i_satd );
+ rcc->frame_size_planned = predict_size( rcc->pred_b_from_p, qp2qscale( q ), h->fref[1][h->i_ref[1]-1]->i_satd );
h->rc->frame_size_estimated = rcc->frame_size_planned;
/* For row SATDs */
rcc->last_satd = x264_rc_analyse_slice( h );
rcc->short_term_cplxsum *= 0.5;
rcc->short_term_cplxcount *= 0.5;
- rcc->short_term_cplxsum += rcc->last_satd;
+ rcc->short_term_cplxsum += rcc->last_satd / (CLIP_DURATION(h->fenc->f_duration) / BASE_FRAME_DURATION);
rcc->short_term_cplxcount ++;
rce.tex_bits = rcc->last_satd;
rce.s_count = 0;
rce.qscale = 1;
rce.pict_type = pict_type;
+ rce.i_duration = h->fenc->i_duration;
if( h->param.rc.i_rc_method == X264_RC_CRF )
{
COPY(prev_zone);
COPY(qpbuf_pos);
/* these vars can be updated by x264_ratecontrol_init_reconfigurable */
- COPY(buffer_rate);
+ COPY(bitrate);
COPY(buffer_size);
+ COPY(buffer_rate);
+ COPY(vbv_max_rate);
COPY(single_frame_vbv);
COPY(cbr_decay);
- COPY(b_vbv_min_rate);
COPY(rate_factor_constant);
- COPY(bitrate);
+ COPY(rate_factor_max_increment);
#undef COPY
}
if( cur != next )
{
x264_ratecontrol_t *rcc = h->rc;
uint64_t all_const_bits = 0;
+ double timescale = (double)h->sps->vui.i_num_units_in_tick / h->sps->vui.i_time_scale;
double duration = 0;
for( int i = 0; i < rcc->num_entries; i++ )
duration += rcc->entry[i].i_duration;
- duration *= (double)h->sps->vui.i_num_units_in_tick / h->sps->vui.i_time_scale;
+ duration *= timescale;
uint64_t all_available_bits = h->param.rc.i_bitrate * 1000. * duration;
double rate_factor, step_mult;
double qblur = h->param.rc.f_qblur;
for( int j = 1; j < cplxblur*2 && j < rcc->num_entries-i; j++ )
{
ratecontrol_entry_t *rcj = &rcc->entry[i+j];
+ double frame_duration = CLIP_DURATION(rcj->i_duration * timescale) / BASE_FRAME_DURATION;
weight *= 1 - pow( (float)rcj->i_count / rcc->nmb, 2 );
if( weight < .0001 )
break;
gaussian_weight = weight * exp( -j*j/200.0 );
weight_sum += gaussian_weight;
- cplx_sum += gaussian_weight * (qscale2bits(rcj, 1) - rcj->misc_bits);
+ cplx_sum += gaussian_weight * (qscale2bits( rcj, 1 ) - rcj->misc_bits) / frame_duration;
}
/* weighted average of cplx of past frames */
weight = 1.0;
for( int j = 0; j <= cplxblur*2 && j <= i; j++ )
{
ratecontrol_entry_t *rcj = &rcc->entry[i-j];
+ double frame_duration = CLIP_DURATION(rcj->i_duration * timescale) / BASE_FRAME_DURATION;
gaussian_weight = weight * exp( -j*j/200.0 );
weight_sum += gaussian_weight;
- cplx_sum += gaussian_weight * (qscale2bits( rcj, 1 ) - rcj->misc_bits);
+ cplx_sum += gaussian_weight * (qscale2bits( rcj, 1 ) - rcj->misc_bits) / frame_duration;
weight *= 1 - pow( (float)rcj->i_count / rcc->nmb, 2 );
if( weight < .0001 )
break;
/* find qscale */
for( int i = 0; i < rcc->num_entries; i++ )
{
- qscale[i] = get_qscale( h, &rcc->entry[i], rate_factor, i );
+ qscale[i] = get_qscale( h, &rcc->entry[i], rate_factor, -1 );
rcc->last_qscale_for[rcc->entry[i].pict_type] = qscale[i];
}
/* fixed I/B qscale relative to P */
for( int i = rcc->num_entries-1; i >= 0; i-- )
{
- qscale[i] = get_diff_limited_q( h, &rcc->entry[i], qscale[i] );
+ qscale[i] = get_diff_limited_q( h, &rcc->entry[i], qscale[i], i );
assert(qscale[i] >= 0);
}
projects / x264 / blobdiff