*****************************************************************************
* Copyright (C) 2005-2008 x264 project
*
- * Authors: Loren Merritt <lorenm@u.washington.edu>
- * Fiona Glaser <fiona@x264.com>
+ * Authors: Fiona Glaser <fiona@x264.com>
+ * Loren Merritt <lorenm@u.washington.edu>
+ * Dylan Yudaken <dyudaken@gmail.com>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
*****************************************************************************/
#include <math.h>
-#include <limits.h>
#include "common/common.h"
#include "common/cpu.h"
#include "macroblock.h"
#include "me.h"
+static int x264_slicetype_frame_cost( x264_t *h, x264_mb_analysis_t *a,
+ x264_frame_t **frames, int p0, int p1, int b,
+ int b_intra_penalty );
-static int x264_lowres_context_init( x264_t *h, x264_mb_analysis_t *a )
+static void x264_lowres_context_init( x264_t *h, x264_mb_analysis_t *a )
{
- a->i_qp = 12; // arbitrary, but low because SATD scores are 1/4 normal
+ a->i_qp = X264_LOOKAHEAD_QP;
a->i_lambda = x264_lambda_tab[ a->i_qp ];
- if( x264_mb_analyse_load_costs( h, a ) )
- return -1;
- h->mb.i_me_method = X264_MIN( X264_ME_HEX, h->param.analyse.i_me_method ); // maybe dia?
- h->mb.i_subpel_refine = 4; // 3 should be enough, but not tweaking for speed now
+ x264_mb_analyse_load_costs( h, a );
+ if( h->param.analyse.i_subpel_refine > 1 )
+ {
+ h->mb.i_me_method = X264_MIN( X264_ME_HEX, h->param.analyse.i_me_method );
+ h->mb.i_subpel_refine = 4;
+ }
+ else
+ {
+ h->mb.i_me_method = X264_ME_DIA;
+ h->mb.i_subpel_refine = 2;
+ }
h->mb.b_chroma_me = 0;
- return 0;
}
-int x264_lowres_context_alloc( x264_t *h )
+/* makes a non-h264 weight (i.e. fix7), into an h264 weight */
+static void x264_weight_get_h264( unsigned int weight_nonh264, int offset, x264_weight_t *w )
{
- x264_mb_analysis_t a;
- return x264_lowres_context_init( h, &a );
+ w->i_offset = offset;
+ w->i_denom = 7;
+ w->i_scale = weight_nonh264;
+ while( w->i_denom > 0 && (w->i_scale > 127 || !(w->i_scale & 1)) )
+ {
+ w->i_denom--;
+ w->i_scale >>= 1;
+ }
+ w->i_scale = X264_MIN( w->i_scale, 127 );
+}
+
+void x264_weight_plane_analyse( x264_t *h, x264_frame_t *frame )
+{
+ int x,y;
+ uint32_t sad = 0;
+ uint64_t ssd = 0;
+ uint8_t *p = frame->plane[0];
+ int stride = frame->i_stride[0];
+ int width = frame->i_width[0];
+ int height = frame->i_lines[0];
+ for( y = 0; y < height>>4; y++, p += stride*16 )
+ for( x = 0; x < width; x += 16 )
+ {
+ uint64_t res = h->pixf.var[PIXEL_16x16]( p + x, stride );
+ sad += (uint32_t)res;
+ ssd += res >> 32;
+ }
+ frame->i_pixel_sum = sad;
+ frame->i_pixel_ssd = ssd - ((uint64_t)sad * sad + width * height / 2) / (width * height);
+}
+
+static NOINLINE uint8_t *x264_weight_cost_init_luma( x264_t *h, x264_frame_t *fenc, x264_frame_t *ref, uint8_t *dest )
+{
+ int ref0_distance = fenc->i_frame - ref->i_frame - 1;
+ /* Note: this will never run during lookahead as weights_analyse is only called if no
+ * motion search has been done. */
+ if( fenc->lowres_mvs[0][ref0_distance][0][0] != 0x7FFF )
+ {
+ int i_stride = fenc->i_stride_lowres;
+ int i_lines = fenc->i_lines_lowres;
+ int i_width = fenc->i_width_lowres;
+ int i_mb_xy = 0;
+ int x,y;
+ uint8_t *p = dest;
+
+ for( y = 0; y < i_lines; y += 8, p += i_stride*8 )
+ for( x = 0; x < i_width; x += 8, i_mb_xy++ )
+ {
+ int mvx = fenc->lowres_mvs[0][ref0_distance][i_mb_xy][0];
+ int mvy = fenc->lowres_mvs[0][ref0_distance][i_mb_xy][1];
+ h->mc.mc_luma( p+x, i_stride, ref->lowres, i_stride,
+ mvx+(x<<2), mvy+(y<<2), 8, 8, weight_none );
+ }
+ x264_emms();
+ return dest;
+ }
+ x264_emms();
+ return ref->lowres[0];
+}
+
+static NOINLINE unsigned int x264_weight_cost( x264_t *h, x264_frame_t *fenc, uint8_t *src, x264_weight_t *w )
+{
+ int x, y;
+ unsigned int cost = 0;
+ int i_stride = fenc->i_stride_lowres;
+ int i_lines = fenc->i_lines_lowres;
+ int i_width = fenc->i_width_lowres;
+ uint8_t *fenc_plane = fenc->lowres[0];
+ ALIGNED_ARRAY_8( uint8_t, buf,[8*8] );
+ int pixoff = 0;
+ int i_mb = 0;
+
+ if( w )
+ {
+ for( y = 0; y < i_lines; y += 8, pixoff = y*i_stride )
+ for( x = 0; x < i_width; x += 8, i_mb++, pixoff += 8)
+ {
+ w->weightfn[8>>2]( buf, 8, &src[pixoff], i_stride, w, 8 );
+ cost += X264_MIN( h->pixf.mbcmp[PIXEL_8x8]( buf, 8, &fenc_plane[pixoff], i_stride ), fenc->i_intra_cost[i_mb] );
+ }
+ /* Add cost of weights in the slice header. */
+ int numslices;
+ if( h->param.i_slice_count )
+ numslices = h->param.i_slice_count;
+ else if( h->param.i_slice_max_mbs )
+ numslices = (h->sps->i_mb_width * h->sps->i_mb_height + h->param.i_slice_max_mbs-1) / h->param.i_slice_max_mbs;
+ else
+ numslices = 1;
+ /* FIXME: find a way to account for --slice-max-size?
+ * Multiply by 2 as there will be a duplicate. 10 bits added as if there is a weighted frame, then an additional duplicate is used.
+ * Since using lowres frames, assume lambda = 1. */
+ cost += numslices * ( 10 + 2 * ( bs_size_ue( w[0].i_denom ) + bs_size_se( w[0].i_scale ) + bs_size_se( w[0].i_offset ) ) );
+ }
+ else
+ for( y = 0; y < i_lines; y += 8, pixoff = y*i_stride )
+ for( x = 0; x < i_width; x += 8, i_mb++, pixoff += 8 )
+ cost += X264_MIN( h->pixf.mbcmp[PIXEL_8x8]( &src[pixoff], i_stride, &fenc_plane[pixoff], i_stride ), fenc->i_intra_cost[i_mb] );
+ x264_emms();
+ return cost;
+}
+
+void x264_weights_analyse( x264_t *h, x264_frame_t *fenc, x264_frame_t *ref, int b_lookahead )
+{
+ float fenc_mean, ref_mean, fenc_var, ref_var;
+ int i_off, offset_search;
+ int minoff, minscale, mindenom;
+ unsigned int minscore, origscore;
+ int i_delta_index = fenc->i_frame - ref->i_frame - 1;
+ /* epsilon is chosen to require at least a numerator of 127 (with denominator = 128) */
+ const float epsilon = 1.0/128.0;
+ float guess_scale;
+ int found;
+ x264_weight_t *weights = fenc->weight[0];
+
+ fenc_var = round( sqrt( fenc->i_pixel_ssd ) );
+ ref_var = round( sqrt( ref->i_pixel_ssd ) );
+ fenc_mean = (float)fenc->i_pixel_sum / (fenc->i_lines[0] * fenc->i_width[0]);
+ ref_mean = (float) ref->i_pixel_sum / (fenc->i_lines[0] * fenc->i_width[0]);
+
+ //early termination
+ if( fabs( ref_mean - fenc_mean ) < 0.5 && fabs( 1 - fenc_var / ref_var ) < epsilon )
+ {
+ SET_WEIGHT( weights[0], 0, 1, 0, 0 );
+ return;
+ }
+
+ guess_scale = ref_var ? fenc_var/ref_var : 0;
+ x264_weight_get_h264( round( guess_scale * 128 ), 0, &weights[0] );
+
+ found = 0;
+ mindenom = weights[0].i_denom;
+ minscale = weights[0].i_scale;
+ minoff = 0;
+ offset_search = x264_clip3( floor( fenc_mean - ref_mean * minscale / (1 << mindenom) + 0.5f*b_lookahead ), -128, 126 );
+
+ if( !fenc->b_intra_calculated )
+ {
+ x264_mb_analysis_t a;
+ x264_lowres_context_init( h, &a );
+ x264_slicetype_frame_cost( h, &a, &fenc, 0, 0, 0, 0 );
+ }
+ uint8_t *mcbuf = x264_weight_cost_init_luma( h, fenc, ref, h->mb.p_weight_buf[0] );
+ origscore = minscore = x264_weight_cost( h, fenc, mcbuf, 0 );
+
+ if( !minscore )
+ {
+ SET_WEIGHT( weights[0], 0, 1, 0, 0 );
+ return;
+ }
+
+ // This gives a slight improvement due to rounding errors but only tests
+ // one offset on lookahead.
+ // TODO: currently searches only offset +1. try other offsets/multipliers/combinations thereof?
+ for( i_off = offset_search; i_off <= offset_search+!b_lookahead; i_off++ )
+ {
+ SET_WEIGHT( weights[0], 1, minscale, mindenom, i_off );
+ unsigned int s = x264_weight_cost( h, fenc, mcbuf, &weights[0] );
+ COPY3_IF_LT( minscore, s, minoff, i_off, found, 1 );
+ }
+ x264_emms();
+
+ /* FIXME: More analysis can be done here on SAD vs. SATD termination. */
+ /* 0.2% termination derived experimentally to avoid weird weights in frames that are mostly intra. */
+ if( !found || (minscale == 1<<mindenom && minoff == 0) || (float)minscore / origscore > 0.998 )
+ {
+ SET_WEIGHT( weights[0], 0, 1, 0, 0 );
+ return;
+ }
+ else
+ SET_WEIGHT( weights[0], 1, minscale, mindenom, minoff );
+
+ if( h->param.analyse.i_weighted_pred == X264_WEIGHTP_FAKE && weights[0].weightfn )
+ fenc->f_weighted_cost_delta[i_delta_index] = (float)minscore / origscore;
+
+ if( weights[0].weightfn && b_lookahead )
+ {
+ //scale lowres in lookahead for slicetype_frame_cost
+ uint8_t *src = ref->buffer_lowres[0];
+ uint8_t *dst = h->mb.p_weight_buf[0];
+ int width = ref->i_width_lowres + PADH*2;
+ int height = ref->i_lines_lowres + PADV*2;
+ x264_weight_scale_plane( h, dst, ref->i_stride_lowres, src, ref->i_stride_lowres,
+ width, height, &weights[0] );
+ fenc->weighted[0] = h->mb.p_weight_buf[0] + PADH + ref->i_stride_lowres * PADV;
+ }
}
static int x264_slicetype_mb_cost( x264_t *h, x264_mb_analysis_t *a,
- x264_frame_t **frames, int p0, int p1, int b,
- int dist_scale_factor, int do_search[2] )
+ x264_frame_t **frames, int p0, int p1, int b,
+ int dist_scale_factor, int do_search[2], const x264_weight_t *w )
{
x264_frame_t *fref0 = frames[p0];
x264_frame_t *fref1 = frames[p1];
const int i_mb_stride = h->sps->i_mb_width;
const int i_mb_xy = i_mb_x + i_mb_y * i_mb_stride;
const int i_stride = fenc->i_stride_lowres;
- const int i_pel_offset = 8 * ( i_mb_x + i_mb_y * i_stride );
+ const int i_pel_offset = 8 * (i_mb_x + i_mb_y * i_stride);
const int i_bipred_weight = h->param.analyse.b_weighted_bipred ? 64 - (dist_scale_factor>>2) : 32;
int16_t (*fenc_mvs[2])[2] = { &frames[b]->lowres_mvs[0][b-p0-1][i_mb_xy], &frames[b]->lowres_mvs[1][p1-b-1][i_mb_xy] };
int (*fenc_costs[2]) = { &frames[b]->lowres_mv_costs[0][b-p0-1][i_mb_xy], &frames[b]->lowres_mv_costs[1][p1-b-1][i_mb_xy] };
- DECLARE_ALIGNED_8( uint8_t pix1[9*FDEC_STRIDE] );
+ ALIGNED_ARRAY_8( uint8_t, pix1,[9*FDEC_STRIDE] );
uint8_t *pix2 = pix1+8;
x264_me_t m[2];
int i_bcost = COST_MAX;
(dst)[2] = &(src)[2][i_pel_offset]; \
(dst)[3] = &(src)[3][i_pel_offset]; \
}
+#define LOAD_WPELS_LUMA(dst,src) \
+ (dst) = &(src)[i_pel_offset];
+
#define CLIP_MV( mv ) \
{ \
mv[0] = x264_clip3( mv[0], h->mb.mv_min_spel[0], h->mb.mv_max_spel[0] ); \
}
#define TRY_BIDIR( mv0, mv1, penalty ) \
{ \
- int stride1 = 16, stride2 = 16; \
- uint8_t *src1, *src2; \
int i_cost; \
- src1 = h->mc.get_ref( pix1, &stride1, m[0].p_fref, m[0].i_stride[0], \
- (mv0)[0], (mv0)[1], 8, 8 ); \
- src2 = h->mc.get_ref( pix2, &stride2, m[1].p_fref, m[1].i_stride[0], \
- (mv1)[0], (mv1)[1], 8, 8 ); \
- h->mc.avg[PIXEL_8x8]( pix1, 16, src1, stride1, src2, stride2, i_bipred_weight ); \
+ if( h->param.analyse.i_subpel_refine <= 1 ) \
+ { \
+ int hpel_idx1 = (((mv0)[0]&2)>>1) + ((mv0)[1]&2); \
+ int hpel_idx2 = (((mv1)[0]&2)>>1) + ((mv1)[1]&2); \
+ uint8_t *src1 = m[0].p_fref[hpel_idx1] + ((mv0)[0]>>2) + ((mv0)[1]>>2) * m[0].i_stride[0]; \
+ uint8_t *src2 = m[1].p_fref[hpel_idx2] + ((mv1)[0]>>2) + ((mv1)[1]>>2) * m[1].i_stride[0]; \
+ h->mc.avg[PIXEL_8x8]( pix1, 16, src1, m[0].i_stride[0], src2, m[1].i_stride[0], i_bipred_weight ); \
+ } \
+ else \
+ { \
+ int stride1 = 16, stride2 = 16; \
+ uint8_t *src1, *src2; \
+ src1 = h->mc.get_ref( pix1, &stride1, m[0].p_fref, m[0].i_stride[0], \
+ (mv0)[0], (mv0)[1], 8, 8, w ); \
+ src2 = h->mc.get_ref( pix2, &stride2, m[1].p_fref, m[1].i_stride[0], \
+ (mv1)[0], (mv1)[1], 8, 8, w ); \
+ h->mc.avg[PIXEL_8x8]( pix1, 16, src1, stride1, src2, stride2, i_bipred_weight ); \
+ } \
i_cost = penalty + h->pixf.mbcmp[PIXEL_8x8]( \
m[0].p_fenc[0], FENC_STRIDE, pix1, 16 ); \
COPY2_IF_LT( i_bcost, i_cost, list_used, 3 ); \
m[0].p_cost_mv = a->p_cost_mv;
m[0].i_stride[0] = i_stride;
m[0].p_fenc[0] = h->mb.pic.p_fenc[0];
+ m[0].weight = w;
+ m[0].i_ref = 0;
LOAD_HPELS_LUMA( m[0].p_fref, fref0->lowres );
+ m[0].p_fref_w = m[0].p_fref[0];
+ if( w[0].weightfn )
+ LOAD_WPELS_LUMA( m[0].p_fref_w, fenc->weighted[0] );
if( b_bidir )
{
int16_t *mvr = fref1->lowres_mvs[0][p1-p0-1][i_mb_xy];
- int dmv[2][2];
-
- h->mc.memcpy_aligned( &m[1], &m[0], sizeof(x264_me_t) );
+ ALIGNED_ARRAY_8( int16_t, dmv,[2],[2] );
+
+ m[1].i_pixel = PIXEL_8x8;
+ m[1].p_cost_mv = a->p_cost_mv;
+ m[1].i_stride[0] = i_stride;
+ m[1].p_fenc[0] = h->mb.pic.p_fenc[0];
+ m[1].i_ref = 0;
+ m[1].weight = weight_none;
LOAD_HPELS_LUMA( m[1].p_fref, fref1->lowres );
+ m[1].p_fref_w = m[1].p_fref[0];
dmv[0][0] = ( mvr[0] * dist_scale_factor + 128 ) >> 8;
dmv[0][1] = ( mvr[1] * dist_scale_factor + 128 ) >> 8;
dmv[1][1] = dmv[0][1] - mvr[1];
CLIP_MV( dmv[0] );
CLIP_MV( dmv[1] );
+ if( h->param.analyse.i_subpel_refine <= 1 )
+ M64( dmv ) &= ~0x0001000100010001ULL; /* mv & ~1 */
TRY_BIDIR( dmv[0], dmv[1], 0 );
- if( dmv[0][0] | dmv[0][1] | dmv[1][0] | dmv[1][1] )
+ if( M64( dmv ) )
{
int i_cost;
h->mc.avg[PIXEL_8x8]( pix1, 16, m[0].p_fref[0], m[0].i_stride[0], m[1].p_fref[0], m[1].i_stride[0], i_bipred_weight );
{
int i_mvc = 0;
int16_t (*fenc_mv)[2] = fenc_mvs[l];
- DECLARE_ALIGNED_4( int16_t mvc[4][2] );
+ ALIGNED_4( int16_t mvc[4][2] );
/* Reverse-order MV prediction. */
- *(uint32_t*)mvc[0] = 0;
- *(uint32_t*)mvc[1] = 0;
- *(uint32_t*)mvc[2] = 0;
-#define MVC(mv) { *(uint32_t*)mvc[i_mvc] = *(uint32_t*)mv; i_mvc++; }
+ M32( mvc[0] ) = 0;
+ M32( mvc[1] ) = 0;
+ M32( mvc[2] ) = 0;
+#define MVC(mv) { CP32( mvc[i_mvc], mv ); i_mvc++; }
if( i_mb_x < h->sps->i_mb_width - 1 )
MVC(fenc_mv[1]);
if( i_mb_y < h->sps->i_mb_height - 1 )
x264_me_search( h, &m[l], mvc, i_mvc );
m[l].cost -= 2; // remove mvcost from skip mbs
- if( *(uint32_t*)m[l].mv )
+ if( M32( m[l].mv ) )
m[l].cost += 5;
- *(uint32_t*)fenc_mvs[l] = *(uint32_t*)m[l].mv;
+ CP32( fenc_mvs[l], m[l].mv );
*fenc_costs[l] = m[l].cost;
}
else
{
- *(uint32_t*)m[l].mv = *(uint32_t*)fenc_mvs[l];
+ CP32( m[l].mv, fenc_mvs[l] );
m[l].cost = *fenc_costs[l];
}
COPY2_IF_LT( i_bcost, m[l].cost, list_used, l+1 );
}
- if( b_bidir && ( *(uint32_t*)m[0].mv || *(uint32_t*)m[1].mv ) )
+ if( b_bidir && ( M32( m[0].mv ) || M32( m[1].mv ) ) )
TRY_BIDIR( m[0].mv, m[1].mv, 5 );
- frames[b]->lowres_inter_types[b-p0][p1-b][i_mb_xy] = list_used;
+ /* Store to width-2 bitfield. */
+ frames[b]->lowres_inter_types[b-p0][p1-b][i_mb_xy>>2] &= ~(3<<((i_mb_xy&3)*2));
+ frames[b]->lowres_inter_types[b-p0][p1-b][i_mb_xy>>2] |= list_used<<((i_mb_xy&3)*2);
lowres_intra_mb:
/* forbid intra-mbs in B-frames, because it's rare and not worth checking */
int i_icost, b_intra;
if( !fenc->b_intra_calculated )
{
- DECLARE_ALIGNED_16( uint8_t edge[33] );
+ ALIGNED_ARRAY_16( uint8_t, edge,[33] );
uint8_t *pix = &pix1[8+FDEC_STRIDE - 1];
uint8_t *src = &fenc->lowres[0][i_pel_offset - 1];
const int intra_penalty = 5;
- int satds[4];
+ int satds[3];
memcpy( pix-FDEC_STRIDE, src-i_stride, 17 );
for( i=0; i<8; i++ )
pix++;
if( h->pixf.intra_mbcmp_x3_8x8c )
- {
h->pixf.intra_mbcmp_x3_8x8c( h->mb.pic.p_fenc[0], pix, satds );
- h->predict_8x8c[I_PRED_CHROMA_P]( pix );
- satds[I_PRED_CHROMA_P] =
- h->pixf.mbcmp[PIXEL_8x8]( pix, FDEC_STRIDE, h->mb.pic.p_fenc[0], FENC_STRIDE );
- }
else
{
- for( i=0; i<4; i++ )
+ for( i=0; i<3; i++ )
{
h->predict_8x8c[i]( pix );
satds[i] = h->pixf.mbcmp[PIXEL_8x8]( pix, FDEC_STRIDE, h->mb.pic.p_fenc[0], FENC_STRIDE );
}
}
- i_icost = X264_MIN4( satds[0], satds[1], satds[2], satds[3] );
+ i_icost = X264_MIN3( satds[0], satds[1], satds[2] );
- h->predict_8x8_filter( pix, edge, ALL_NEIGHBORS, ALL_NEIGHBORS );
- for( i=3; i<9; i++ )
+ if( h->param.analyse.i_subpel_refine > 1 )
{
- int satd;
- h->predict_8x8[i]( pix, edge );
- satd = h->pixf.mbcmp[PIXEL_8x8]( pix, FDEC_STRIDE, h->mb.pic.p_fenc[0], FENC_STRIDE );
+ h->predict_8x8c[I_PRED_CHROMA_P]( pix );
+ int satd = h->pixf.mbcmp[PIXEL_8x8]( pix, FDEC_STRIDE, h->mb.pic.p_fenc[0], FENC_STRIDE );
i_icost = X264_MIN( i_icost, satd );
+ h->predict_8x8_filter( pix, edge, ALL_NEIGHBORS, ALL_NEIGHBORS );
+ for( i=3; i<9; i++ )
+ {
+ int satd;
+ h->predict_8x8[i]( pix, edge );
+ satd = h->pixf.mbcmp[PIXEL_8x8]( pix, FDEC_STRIDE, h->mb.pic.p_fenc[0], FENC_STRIDE );
+ i_icost = X264_MIN( i_icost, satd );
+ }
}
i_icost += intra_penalty;
{
fenc->i_intra_mbs[b-p0] += b_intra;
fenc->i_cost_est[0][0] += i_icost;
+ if( h->param.rc.i_aq_mode )
+ fenc->i_cost_est_aq[0][0] += (i_icost * fenc->i_inv_qscale_factor[i_mb_xy] + 128) >> 8;
}
}
}
h->sps->i_mb_width * h->sps->i_mb_height)
static int x264_slicetype_frame_cost( x264_t *h, x264_mb_analysis_t *a,
- x264_frame_t **frames, int p0, int p1, int b,
- int b_intra_penalty )
+ x264_frame_t **frames, int p0, int p1, int b,
+ int b_intra_penalty )
{
int i_score = 0;
/* Don't use the AQ'd scores for slicetype decision. */
int i_score_aq = 0;
int do_search[2];
-
+ const x264_weight_t *w = weight_none;
/* Check whether we already evaluated this frame
* If we have tried this frame as P, then we have also tried
* the preceding frames as B. (is this still true?) */
/* For each list, check to see whether we have lowres motion-searched this reference frame before. */
do_search[0] = b != p0 && frames[b]->lowres_mvs[0][b-p0-1][0][0] == 0x7FFF;
do_search[1] = b != p1 && frames[b]->lowres_mvs[1][p1-b-1][0][0] == 0x7FFF;
- if( do_search[0] ) frames[b]->lowres_mvs[0][b-p0-1][0][0] = 0;
+ if( do_search[0] )
+ {
+ if( ( h->param.analyse.i_weighted_pred == X264_WEIGHTP_SMART
+ || h->param.analyse.i_weighted_pred == X264_WEIGHTP_FAKE ) && b == p1 )
+ {
+ x264_emms();
+ x264_weights_analyse( h, frames[b], frames[p0], 1 );
+ w = frames[b]->weight[0];
+ }
+ frames[b]->lowres_mvs[0][b-p0-1][0][0] = 0;
+ }
if( do_search[1] ) frames[b]->lowres_mvs[1][p1-b-1][0][0] = 0;
if( b == p1 )
{
frames[b]->i_intra_mbs[b-p0] = 0;
frames[b]->i_cost_est[0][0] = 0;
+ frames[b]->i_cost_est_aq[0][0] = 0;
}
if( p1 != p0 )
dist_scale_factor = ( ((b-p0) << 8) + ((p1-p0) >> 1) ) / (p1-p0);
row_satd[ h->mb.i_mb_y ] = 0;
for( h->mb.i_mb_x = h->sps->i_mb_width - 1; h->mb.i_mb_x >= 0; h->mb.i_mb_x-- )
{
- int i_mb_cost = x264_slicetype_mb_cost( h, a, frames, p0, p1, b, dist_scale_factor, do_search );
+ int i_mb_cost = x264_slicetype_mb_cost( h, a, frames, p0, p1, b, dist_scale_factor, do_search, w );
int i_mb_cost_aq = i_mb_cost;
if( h->param.rc.i_aq_mode )
i_mb_cost_aq = (i_mb_cost_aq * frames[b]->i_inv_qscale_factor[h->mb.i_mb_x + h->mb.i_mb_y*h->mb.i_mb_stride] + 128) >> 8;
for( h->mb.i_mb_y = h->sps->i_mb_height - 2; h->mb.i_mb_y > 0; h->mb.i_mb_y-- )
for( h->mb.i_mb_x = h->sps->i_mb_width - 2; h->mb.i_mb_x > 0; h->mb.i_mb_x-- )
{
- int i_mb_cost = x264_slicetype_mb_cost( h, a, frames, p0, p1, b, dist_scale_factor, do_search );
+ int i_mb_cost = x264_slicetype_mb_cost( h, a, frames, p0, p1, b, dist_scale_factor, do_search, w );
int i_mb_cost_aq = i_mb_cost;
if( h->param.rc.i_aq_mode )
i_mb_cost_aq = (i_mb_cost_aq * frames[b]->i_inv_qscale_factor[h->mb.i_mb_x + h->mb.i_mb_y*h->mb.i_mb_stride] + 128) >> 8;
}
if( b != p1 )
- i_score = i_score * 100 / (120 + h->param.i_bframe_bias);
+ i_score = (uint64_t)i_score * 100 / (120 + h->param.i_bframe_bias);
else
frames[b]->b_intra_calculated = 1;
{
int i_score = 0;
int *row_satd = frames[b]->i_row_satds[b-p0][p1-b];
+ float *qp_offset = IS_X264_TYPE_B(frames[b]->i_type) ? frames[b]->f_qp_offset_aq : frames[b]->f_qp_offset;
x264_emms();
for( h->mb.i_mb_y = h->sps->i_mb_height - 1; h->mb.i_mb_y >= 0; h->mb.i_mb_y-- )
{
{
int i_mb_xy = h->mb.i_mb_x + h->mb.i_mb_y*h->mb.i_mb_stride;
int i_mb_cost = frames[b]->lowres_costs[b-p0][p1-b][i_mb_xy];
- float qp_adj = frames[b]->f_qp_offset[i_mb_xy];
- i_mb_cost = (i_mb_cost * x264_exp2fix8(qp_adj*(-1.f/6.f)) + 128) >> 8;
+ float qp_adj = qp_offset[i_mb_xy];
+ i_mb_cost = (i_mb_cost * x264_exp2fix8(qp_adj) + 128) >> 8;
row_satd[ h->mb.i_mb_y ] += i_mb_cost;
if( (h->mb.i_mb_y > 0 && h->mb.i_mb_y < h->sps->i_mb_height - 1 &&
h->mb.i_mb_x > 0 && h->mb.i_mb_x < h->sps->i_mb_width - 1) ||
return i_score;
}
-static void x264_macroblock_tree_finish( x264_t *h, x264_frame_t *frame, int b_bidir )
+static void x264_macroblock_tree_finish( x264_t *h, x264_frame_t *frame, int ref0_distance )
{
int mb_index;
x264_emms();
- if( b_bidir )
- memcpy( frame->f_qp_offset, frame->f_qp_offset_aq, sizeof( frame->f_qp_offset ) );
- else
+ float weightdelta = 0.0;
+ if( ref0_distance && frame->f_weighted_cost_delta[ref0_distance-1] > 0 )
+ weightdelta = (1.0 - frame->f_weighted_cost_delta[ref0_distance-1]);
+
+ /* Allow the strength to be adjusted via qcompress, since the two
+ * concepts are very similar. */
+ float strength = 5.0f * (1.0f - h->param.rc.f_qcompress);
+ for( mb_index = 0; mb_index < h->mb.i_mb_count; mb_index++ )
{
- for( mb_index = 0; mb_index < h->mb.i_mb_count; mb_index++ )
+ int intra_cost = (frame->i_intra_cost[mb_index] * frame->i_inv_qscale_factor[mb_index]+128)>>8;
+ if( intra_cost )
{
- int intra_cost = (frame->i_intra_cost[mb_index] * frame->i_inv_qscale_factor[mb_index]+128)>>8;
- if( intra_cost )
- {
- int propagate_cost = frame->i_propagate_cost[mb_index];
- float log2_ratio = x264_log2(intra_cost + propagate_cost) - x264_log2(intra_cost);
- /* Allow the constant to be adjusted via qcompress, since the two
- * concepts are very similar. */
- frame->f_qp_offset[mb_index] = frame->f_qp_offset_aq[mb_index] - 5.0 * (1.0 - h->param.rc.f_qcompress) * log2_ratio;
- }
+ int propagate_cost = frame->i_propagate_cost[mb_index];
+ float log2_ratio = x264_log2(intra_cost + propagate_cost) - x264_log2(intra_cost) + weightdelta;
+ frame->f_qp_offset[mb_index] = frame->f_qp_offset_aq[mb_index] - strength * log2_ratio;
}
}
}
-static void x264_macroblock_tree_propagate( x264_t *h, x264_frame_t **frames, int p0, int p1, int b )
+static void x264_macroblock_tree_propagate( x264_t *h, x264_frame_t **frames, int p0, int p1, int b, int referenced )
{
- x264_frame_t *refs[2] = {frames[p0],frames[p1]};
+ uint16_t *ref_costs[2] = {frames[p0]->i_propagate_cost,frames[p1]->i_propagate_cost};
int dist_scale_factor = ( ((b-p0) << 8) + ((p1-p0) >> 1) ) / (p1-p0);
int i_bipred_weight = h->param.analyse.b_weighted_bipred ? 64 - (dist_scale_factor>>2) : 32;
int16_t (*mvs[2])[2] = { frames[b]->lowres_mvs[0][b-p0-1], frames[b]->lowres_mvs[1][p1-b-1] };
+ int bipred_weights[2] = {i_bipred_weight, 64 - i_bipred_weight};
int *buf = h->scratch_buffer;
+ uint16_t *propagate_cost = frames[b]->i_propagate_cost;
+
+ /* For non-reffed frames the source costs are always zero, so just memset one row and re-use it. */
+ if( !referenced )
+ memset( frames[b]->i_propagate_cost, 0, h->sps->i_mb_width * sizeof(uint16_t) );
for( h->mb.i_mb_y = 0; h->mb.i_mb_y < h->sps->i_mb_height; h->mb.i_mb_y++ )
{
int mb_index = h->mb.i_mb_y*h->mb.i_mb_stride;
- h->mc.mbtree_propagate_cost( buf, frames[b]->i_propagate_cost+mb_index,
+ h->mc.mbtree_propagate_cost( buf, propagate_cost,
frames[b]->i_intra_cost+mb_index, frames[b]->lowres_costs[b-p0][p1-b]+mb_index,
frames[b]->i_inv_qscale_factor+mb_index, h->sps->i_mb_width );
+ if( referenced )
+ propagate_cost += h->sps->i_mb_width;
for( h->mb.i_mb_x = 0; h->mb.i_mb_x < h->sps->i_mb_width; h->mb.i_mb_x++, mb_index++ )
{
int propagate_amount = buf[h->mb.i_mb_x];
/* Don't propagate for an intra block. */
if( propagate_amount > 0 )
{
- int lists_used = frames[b]->lowres_inter_types[b-p0][p1-b][mb_index];
+ /* Access width-2 bitfield. */
+ int lists_used = (frames[b]->lowres_inter_types[b-p0][p1-b][mb_index>>2] >> ((mb_index&3)*2))&3;
int list;
/* Follow the MVs to the previous frame(s). */
for( list = 0; list < 2; list++ )
int y = mvs[list][mb_index][1];
int listamount = propagate_amount;
int mbx = (x>>5)+h->mb.i_mb_x;
- int mby = ((y>>5)+h->mb.i_mb_y);
+ int mby = (y>>5)+h->mb.i_mb_y;
int idx0 = mbx + mby*h->mb.i_mb_stride;
int idx1 = idx0 + 1;
int idx2 = idx0 + h->mb.i_mb_stride;
/* Apply bipred weighting. */
if( lists_used == 3 )
- listamount = (listamount * (list?(64-i_bipred_weight):i_bipred_weight) + 32) >> 6;
+ listamount = (listamount * bipred_weights[list] + 32) >> 6;
#define CLIP_ADD(s,x) (s) = X264_MIN((s)+(x),(1<<16)-1)
* be counted. */
if( mbx < h->sps->i_mb_width-1 && mby < h->sps->i_mb_height-1 && mbx >= 0 && mby >= 0 )
{
- CLIP_ADD( refs[list]->i_propagate_cost[idx0], (listamount*idx0weight+512)>>10 );
- CLIP_ADD( refs[list]->i_propagate_cost[idx1], (listamount*idx1weight+512)>>10 );
- CLIP_ADD( refs[list]->i_propagate_cost[idx2], (listamount*idx2weight+512)>>10 );
- CLIP_ADD( refs[list]->i_propagate_cost[idx3], (listamount*idx3weight+512)>>10 );
+ CLIP_ADD( ref_costs[list][idx0], (listamount*idx0weight+512)>>10 );
+ CLIP_ADD( ref_costs[list][idx1], (listamount*idx1weight+512)>>10 );
+ CLIP_ADD( ref_costs[list][idx2], (listamount*idx2weight+512)>>10 );
+ CLIP_ADD( ref_costs[list][idx3], (listamount*idx3weight+512)>>10 );
}
else /* Check offsets individually */
{
if( mbx < h->sps->i_mb_width && mby < h->sps->i_mb_height && mbx >= 0 && mby >= 0 )
- CLIP_ADD( refs[list]->i_propagate_cost[idx0], (listamount*idx0weight+512)>>10 );
+ CLIP_ADD( ref_costs[list][idx0], (listamount*idx0weight+512)>>10 );
if( mbx+1 < h->sps->i_mb_width && mby < h->sps->i_mb_height && mbx+1 >= 0 && mby >= 0 )
- CLIP_ADD( refs[list]->i_propagate_cost[idx1], (listamount*idx1weight+512)>>10 );
+ CLIP_ADD( ref_costs[list][idx1], (listamount*idx1weight+512)>>10 );
if( mbx < h->sps->i_mb_width && mby+1 < h->sps->i_mb_height && mbx >= 0 && mby+1 >= 0 )
- CLIP_ADD( refs[list]->i_propagate_cost[idx2], (listamount*idx2weight+512)>>10 );
+ CLIP_ADD( ref_costs[list][idx2], (listamount*idx2weight+512)>>10 );
if( mbx+1 < h->sps->i_mb_width && mby+1 < h->sps->i_mb_height && mbx+1 >= 0 && mby+1 >= 0 )
- CLIP_ADD( refs[list]->i_propagate_cost[idx3], (listamount*idx3weight+512)>>10 );
+ CLIP_ADD( ref_costs[list][idx3], (listamount*idx3weight+512)>>10 );
}
}
}
}
}
- if( h->param.rc.i_vbv_buffer_size )
- x264_macroblock_tree_finish( h, frames[b], b != p1 );
+ if( h->param.rc.i_vbv_buffer_size && referenced )
+ x264_macroblock_tree_finish( h, frames[b], b == p1 ? b - p0 : 0 );
}
static void x264_macroblock_tree( x264_t *h, x264_mb_analysis_t *a, x264_frame_t **frames, int num_frames, int b_intra )
{
int i, idx = !b_intra;
int last_nonb, cur_nonb = 1;
+ int bframes = 0;
if( b_intra )
x264_slicetype_frame_cost( h, a, frames, 0, 0, 0, 0 );
i--;
last_nonb = i;
- if( last_nonb < 0 )
+ if( last_nonb < idx )
return;
memset( frames[last_nonb]->i_propagate_cost, 0, h->mb.i_mb_count * sizeof(uint16_t) );
break;
x264_slicetype_frame_cost( h, a, frames, cur_nonb, last_nonb, last_nonb, 0 );
memset( frames[cur_nonb]->i_propagate_cost, 0, h->mb.i_mb_count * sizeof(uint16_t) );
- x264_macroblock_tree_propagate( h, frames, cur_nonb, last_nonb, last_nonb );
- while( frames[i]->i_type == X264_TYPE_B && i > 0 )
+ bframes = last_nonb - cur_nonb - 1;
+ if( h->param.i_bframe_pyramid && bframes > 1 )
{
- x264_slicetype_frame_cost( h, a, frames, cur_nonb, last_nonb, i, 0 );
- memset( frames[i]->i_propagate_cost, 0, h->mb.i_mb_count * sizeof(uint16_t) );
- x264_macroblock_tree_propagate( h, frames, cur_nonb, last_nonb, i );
- i--;
+ int middle = (bframes + 1)/2 + cur_nonb;
+ x264_slicetype_frame_cost( h, a, frames, cur_nonb, last_nonb, middle, 0 );
+ memset( frames[middle]->i_propagate_cost, 0, h->mb.i_mb_count * sizeof(uint16_t) );
+ while( i > cur_nonb )
+ {
+ int p0 = i > middle ? middle : cur_nonb;
+ int p1 = i < middle ? middle : last_nonb;
+ if( i != middle )
+ {
+ x264_slicetype_frame_cost( h, a, frames, p0, p1, i, 0 );
+ x264_macroblock_tree_propagate( h, frames, p0, p1, i, 0 );
+ }
+ i--;
+ }
+ x264_macroblock_tree_propagate( h, frames, cur_nonb, last_nonb, middle, 1 );
}
+ else
+ {
+ while( i > cur_nonb )
+ {
+ x264_slicetype_frame_cost( h, a, frames, cur_nonb, last_nonb, i, 0 );
+ x264_macroblock_tree_propagate( h, frames, cur_nonb, last_nonb, i, 0 );
+ i--;
+ }
+ }
+ x264_macroblock_tree_propagate( h, frames, cur_nonb, last_nonb, last_nonb, 1 );
last_nonb = cur_nonb;
}
- x264_macroblock_tree_finish( h, frames[last_nonb], 0 );
+ x264_macroblock_tree_finish( h, frames[last_nonb], last_nonb );
+ if( h->param.i_bframe_pyramid && bframes > 1 && !h->param.rc.i_vbv_buffer_size )
+ x264_macroblock_tree_finish( h, frames[last_nonb+(bframes+1)/2], 0 );
}
static int x264_vbv_frame_cost( x264_t *h, x264_mb_analysis_t *a, x264_frame_t **frames, int p0, int p1, int b )
if( cost > threshold )
break;
- for( next_b = loc; next_b < next_p && cost < threshold; next_b++ )
- cost += x264_slicetype_frame_cost( h, a, frames, cur_p, next_p, next_b, 0 );
+ if( h->param.i_bframe_pyramid && next_p - cur_p > 2 )
+ {
+ int middle = cur_p + (next_p - cur_p)/2;
+ cost += x264_slicetype_frame_cost( h, a, frames, cur_p, next_p, middle, 0 );
+ for( next_b = loc; next_b < middle && cost < threshold; next_b++ )
+ cost += x264_slicetype_frame_cost( h, a, frames, cur_p, middle, next_b, 0 );
+ for( next_b = middle+1; next_b < next_p && cost < threshold; next_b++ )
+ cost += x264_slicetype_frame_cost( h, a, frames, middle, next_p, next_b, 0 );
+ }
+ else
+ for( next_b = loc; next_b < next_p && cost < threshold; next_b++ )
+ cost += x264_slicetype_frame_cost( h, a, frames, cur_p, next_p, next_b, 0 );
loc = next_p + 1;
cur_p = next_p;
/* Uses strings due to the fact that the speed of the control functions is
negligable compared to the cost of running slicetype_frame_cost, and because
it makes debugging easier. */
-static void x264_slicetype_path( x264_t *h, x264_mb_analysis_t *a, x264_frame_t **frames, int length, int max_bframes, int buffer_size, char (*best_paths)[X264_LOOKAHEAD_MAX] )
+static void x264_slicetype_path( x264_t *h, x264_mb_analysis_t *a, x264_frame_t **frames, int length, int max_bframes, char (*best_paths)[X264_LOOKAHEAD_MAX] )
{
- char paths[X264_BFRAME_MAX+2][X264_LOOKAHEAD_MAX] = {{0}};
- int num_paths = X264_MIN(max_bframes+1, length);
- int suffix_size, loc, path;
+ char paths[X264_BFRAME_MAX+1][X264_LOOKAHEAD_MAX] = {{0}};
+ int num_paths = X264_MIN( max_bframes+1, length );
+ int path;
int best_cost = COST_MAX;
int best_path_index = 0;
- length = X264_MIN(length,X264_LOOKAHEAD_MAX);
-
- /* Iterate over all currently possible paths and add suffixes to each one */
- for( suffix_size = 0; suffix_size < num_paths; suffix_size++ )
- {
- memcpy( paths[suffix_size], best_paths[length - (suffix_size + 1)], length - (suffix_size + 1) );
- for( loc = 0; loc < suffix_size; loc++ )
- strcat( paths[suffix_size], "B" );
- strcat( paths[suffix_size], "P" );
- }
- /* Calculate the actual cost of each of the current paths */
+ /* Iterate over all currently possible paths */
for( path = 0; path < num_paths; path++ )
{
+ /* Add suffixes to the current path */
+ int len = length - (path + 1);
+ memcpy( paths[path], best_paths[len % (X264_BFRAME_MAX+1)], len );
+ memset( paths[path]+len, 'B', path );
+ strcat( paths[path], "P" );
+
+ /* Calculate the actual cost of the current path */
int cost = x264_slicetype_path_cost( h, a, frames, paths[path], best_cost );
if( cost < best_cost )
{
}
/* Store the best path. */
- memcpy( best_paths[length], paths[best_path_index], length );
+ memcpy( best_paths[length % (X264_BFRAME_MAX+1)], paths[best_path_index], length );
}
-static int scenecut( x264_t *h, x264_mb_analysis_t *a, x264_frame_t **frames, int p0, int p1 )
+static int scenecut_internal( x264_t *h, x264_mb_analysis_t *a, x264_frame_t **frames, int p0, int p1, int print )
{
x264_frame_t *frame = frames[p1];
x264_slicetype_frame_cost( h, a, frames, p0, p1, p1, 0 );
int icost = frame->i_cost_est[0][0];
int pcost = frame->i_cost_est[p1-p0][0];
float f_bias;
- int i_gop_size = frame->i_frame - h->frames.i_last_idr;
+ int i_gop_size = frame->i_frame - h->lookahead->i_last_keyframe;
float f_thresh_max = h->param.i_scenecut_threshold / 100.0;
/* magic numbers pulled out of thin air */
float f_thresh_min = f_thresh_max * h->param.i_keyint_min
if( h->param.i_keyint_min == h->param.i_keyint_max )
f_thresh_min= f_thresh_max;
- if( i_gop_size < h->param.i_keyint_min / 4 )
+ if( i_gop_size < h->param.i_keyint_min / 4 || h->param.b_intra_refresh )
f_bias = f_thresh_min / 4;
else if( i_gop_size <= h->param.i_keyint_min )
f_bias = f_thresh_min * i_gop_size / h->param.i_keyint_min;
}
res = pcost >= (1.0 - f_bias) * icost;
- if( res )
+ if( res && print )
{
int imb = frame->i_intra_mbs[p1-p0];
int pmb = NUM_MBS - imb;
return res;
}
-static void x264_slicetype_analyse( x264_t *h, int keyframe )
+static int scenecut( x264_t *h, x264_mb_analysis_t *a, x264_frame_t **frames, int p0, int p1, int real_scenecut, int num_frames )
+{
+ int curp0, curp1, i, maxp1 = p0 + 1;
+
+ /* Only do analysis during a normal scenecut check. */
+ if( real_scenecut && h->param.i_bframe )
+ {
+ /* Look ahead to avoid coding short flashes as scenecuts. */
+ if( h->param.i_bframe_adaptive == X264_B_ADAPT_TRELLIS )
+ /* Don't analyse any more frames than the trellis would have covered. */
+ maxp1 += h->param.i_bframe;
+ else
+ maxp1++;
+ maxp1 = X264_MIN( maxp1, num_frames );
+
+ /* Where A and B are scenes: AAAAAABBBAAAAAA
+ * If BBB is shorter than (maxp1-p0), it is detected as a flash
+ * and not considered a scenecut. */
+ for( curp1 = p1; curp1 <= maxp1; curp1++ )
+ if( !scenecut_internal( h, a, frames, p0, curp1, 0 ) )
+ /* Any frame in between p0 and cur_p1 cannot be a real scenecut. */
+ for( i = curp1; i > p0; i-- )
+ frames[i]->b_scenecut = 0;
+
+ /* Where A-F are scenes: AAAAABBCCDDEEFFFFFF
+ * If each of BB ... EE are shorter than (maxp1-p0), they are
+ * detected as flashes and not considered scenecuts.
+ * Instead, the first F frame becomes a scenecut. */
+ for( curp0 = p0; curp0 < maxp1; curp0++ )
+ if( scenecut_internal( h, a, frames, curp0, maxp1, 0 ) )
+ /* If cur_p0 is the p0 of a scenecut, it cannot be the p1 of a scenecut. */
+ frames[curp0]->b_scenecut = 0;
+ }
+
+ /* Ignore frames that are part of a flash, i.e. cannot be real scenecuts. */
+ if( !frames[p1]->b_scenecut )
+ return 0;
+ return scenecut_internal( h, a, frames, p0, p1, real_scenecut );
+}
+
+void x264_slicetype_analyse( x264_t *h, int keyframe )
{
x264_mb_analysis_t a;
x264_frame_t *frames[X264_LOOKAHEAD_MAX+3] = { NULL, };
- int num_frames;
- int keyint_limit;
- int i,j;
+ int num_frames, orig_num_frames, keyint_limit, idr_frame_type, i, j;
int i_mb_count = NUM_MBS;
int cost1p0, cost2p0, cost1b1, cost2p1;
- int idr_frame_type;
+ int i_max_search = X264_MIN( h->lookahead->next.i_size, X264_LOOKAHEAD_MAX );
+ if( h->param.b_deterministic )
+ i_max_search = X264_MIN( i_max_search, h->lookahead->i_slicetype_length + !keyframe );
assert( h->frames.b_have_lowres );
- if( !h->frames.last_nonb )
+ if( !h->lookahead->last_nonb )
return;
- frames[0] = h->frames.last_nonb;
- for( j = 0; h->frames.next[j] && h->frames.next[j]->i_type == X264_TYPE_AUTO; j++ )
- frames[j+1] = h->frames.next[j];
+ frames[0] = h->lookahead->last_nonb;
+ for( j = 0; j < i_max_search && h->lookahead->next.list[j]->i_type == X264_TYPE_AUTO; j++ )
+ frames[j+1] = h->lookahead->next.list[j];
if( !j )
return;
- keyint_limit = h->param.i_keyint_max - frames[0]->i_frame + h->frames.i_last_idr - 1;
- num_frames = X264_MIN( j, keyint_limit );
+ keyint_limit = h->param.i_keyint_max - frames[0]->i_frame + h->lookahead->i_last_keyframe - 1;
+ orig_num_frames = num_frames = h->param.b_intra_refresh ? j : X264_MIN( j, keyint_limit );
x264_lowres_context_init( h, &a );
- idr_frame_type = frames[1]->i_frame - h->frames.i_last_idr >= h->param.i_keyint_min ? X264_TYPE_IDR : X264_TYPE_I;
+ idr_frame_type = frames[1]->i_frame - h->lookahead->i_last_keyframe >= h->param.i_keyint_min ? X264_TYPE_IDR : X264_TYPE_I;
/* This is important psy-wise: if we have a non-scenecut keyframe,
* there will be significant visual artifacts if the frames just before
else if( num_frames == 1 )
{
frames[1]->i_type = X264_TYPE_P;
- if( h->param.i_scenecut_threshold && scenecut( h, &a, frames, 0, 1 ) )
+ if( h->param.i_scenecut_threshold && scenecut( h, &a, frames, 0, 1, 1, orig_num_frames ) )
frames[1]->i_type = idr_frame_type;
return;
}
return;
}
- char best_paths[X264_LOOKAHEAD_MAX][X264_LOOKAHEAD_MAX] = {"","P"};
- int n;
int num_bframes = 0;
int max_bframes = X264_MIN(num_frames-1, h->param.i_bframe);
int num_analysed_frames = num_frames;
int reset_start;
- if( h->param.i_scenecut_threshold && scenecut( h, &a, frames, 0, 1 ) )
+ if( h->param.i_scenecut_threshold && scenecut( h, &a, frames, 0, 1, 1, orig_num_frames ) )
{
frames[1]->i_type = idr_frame_type;
return;
{
if( h->param.i_bframe_adaptive == X264_B_ADAPT_TRELLIS )
{
+ char best_paths[X264_BFRAME_MAX+1][X264_LOOKAHEAD_MAX] = {"","P"};
+ int n;
+
/* Perform the frametype analysis. */
- for( n = 2; n < num_frames-1; n++ )
- x264_slicetype_path( h, &a, frames, n, max_bframes, num_frames-max_bframes, best_paths );
- num_bframes = strspn( best_paths[num_frames-2], "B" );
- /* Load the results of the analysis into the frame types. */
- for( j = 1; j < num_frames; j++ )
- frames[j]->i_type = best_paths[num_frames-2][j-1] == 'B' ? X264_TYPE_B : X264_TYPE_P;
+ for( n = 2; n < num_frames; n++ )
+ x264_slicetype_path( h, &a, frames, n, max_bframes, best_paths );
+ if( num_frames > 1 )
+ {
+ int best_path_index = (num_frames-1) % (X264_BFRAME_MAX+1);
+ num_bframes = strspn( best_paths[best_path_index], "B" );
+ /* Load the results of the analysis into the frame types. */
+ for( j = 1; j < num_frames; j++ )
+ frames[j]->i_type = best_paths[best_path_index][j-1] == 'B' ? X264_TYPE_B : X264_TYPE_P;
+ }
frames[num_frames]->i_type = X264_TYPE_P;
}
else if( h->param.i_bframe_adaptive == X264_B_ADAPT_FAST )
{
- for( i = 0; i < num_frames-(2-!i); )
+ for( i = 0; i <= num_frames-2; )
{
cost2p1 = x264_slicetype_frame_cost( h, &a, frames, i+0, i+2, i+2, 1 );
if( frames[i+2]->i_intra_mbs[2] > i_mb_count / 2 )
if( cost1p0 + cost2p0 < cost1b1 + cost2p1 )
{
frames[i+1]->i_type = X264_TYPE_P;
- frames[i+2]->i_type = X264_TYPE_P;
- i += 2;
+ i += 1;
continue;
}
#define INTER_THRESH 300
#define P_SENS_BIAS (50 - h->param.i_bframe_bias)
frames[i+1]->i_type = X264_TYPE_B;
- frames[i+2]->i_type = X264_TYPE_P;
- for( j = i+2; j <= X264_MIN( h->param.i_bframe, num_frames-1 ); j++ )
+ for( j = i+2; j <= X264_MIN( i+h->param.i_bframe, num_frames-1 ); j++ )
{
int pthresh = X264_MAX(INTER_THRESH - P_SENS_BIAS * (j-i-1), INTER_THRESH/10);
int pcost = x264_slicetype_frame_cost( h, &a, frames, i+0, j+1, j+1, 1 );
-
if( pcost > pthresh*i_mb_count || frames[j+1]->i_intra_mbs[j-i+1] > i_mb_count/3 )
- {
- frames[j]->i_type = X264_TYPE_P;
break;
- }
- else
- frames[j]->i_type = X264_TYPE_B;
+ frames[j]->i_type = X264_TYPE_B;
}
+ frames[j]->i_type = X264_TYPE_P;
i = j;
}
- frames[i+!i]->i_type = X264_TYPE_P;
+ frames[num_frames]->i_type = X264_TYPE_P;
num_bframes = 0;
while( num_bframes < num_frames && frames[num_bframes+1]->i_type == X264_TYPE_B )
num_bframes++;
/* Check scenecut on the first minigop. */
for( j = 1; j < num_bframes+1; j++ )
- if( h->param.i_scenecut_threshold && scenecut( h, &a, frames, j, j+1 ) )
+ if( h->param.i_scenecut_threshold && scenecut( h, &a, frames, j, j+1, 0, orig_num_frames ) )
{
frames[j]->i_type = X264_TYPE_P;
num_analysed_frames = j;
}
else
{
- for( j = 1; j < num_frames; j++ )
+ for( j = 1; j <= num_frames; j++ )
frames[j]->i_type = X264_TYPE_P;
reset_start = !keyframe + 1;
num_bframes = 0;
}
- for( j = 1; j <= num_frames; j++ )
- if( frames[j]->i_type == X264_TYPE_AUTO )
- frames[j]->i_type = X264_TYPE_P;
-
/* Perform the actual macroblock tree analysis.
* Don't go farther than the maximum keyframe interval; this helps in short GOPs. */
if( h->param.rc.b_mb_tree )
x264_macroblock_tree( h, &a, frames, X264_MIN(num_frames, h->param.i_keyint_max), keyframe );
/* Enforce keyframe limit. */
- for( j = 0; j < num_frames; j++ )
- {
- if( ((j-keyint_limit) % h->param.i_keyint_max) == 0 )
+ if( !h->param.b_intra_refresh )
+ for( j = 0; j < num_frames; j++ )
{
- if( j )
- frames[j]->i_type = X264_TYPE_P;
- frames[j+1]->i_type = X264_TYPE_IDR;
- reset_start = X264_MIN( reset_start, j+2 );
+ if( ((j-keyint_limit) % h->param.i_keyint_max) == 0 )
+ {
+ if( j && h->param.i_keyint_max > 1 )
+ frames[j]->i_type = X264_TYPE_P;
+ frames[j+1]->i_type = X264_TYPE_IDR;
+ reset_start = X264_MIN( reset_start, j+2 );
+ }
}
- }
if( h->param.rc.i_vbv_buffer_size )
x264_vbv_lookahead( h, &a, frames, num_frames, keyframe );
void x264_slicetype_decide( x264_t *h )
{
+ x264_frame_t *frames[X264_BFRAME_MAX+2];
x264_frame_t *frm;
int bframes;
+ int brefs;
int i;
- if( h->frames.next[0] == NULL )
+ if( !h->lookahead->next.i_size )
return;
if( h->param.rc.b_stat_read )
{
/* Use the frame types from the first pass */
- for( i = 0; h->frames.next[i] != NULL; i++ )
- h->frames.next[i]->i_type =
- x264_ratecontrol_slice_type( h, h->frames.next[i]->i_frame );
+ for( i = 0; i < h->lookahead->next.i_size; i++ )
+ h->lookahead->next.list[i]->i_type =
+ x264_ratecontrol_slice_type( h, h->lookahead->next.list[i]->i_frame );
}
else if( (h->param.i_bframe && h->param.i_bframe_adaptive)
|| h->param.i_scenecut_threshold
|| (h->param.rc.i_vbv_buffer_size && h->param.rc.i_lookahead) )
x264_slicetype_analyse( h, 0 );
- for( bframes = 0;; bframes++ )
+ for( bframes = 0, brefs = 0;; bframes++ )
{
- frm = h->frames.next[bframes];
+ frm = h->lookahead->next.list[bframes];
+ if( frm->i_type == X264_TYPE_BREF && h->param.i_bframe_pyramid < X264_B_PYRAMID_NORMAL &&
+ brefs == h->param.i_bframe_pyramid )
+ {
+ frm->i_type = X264_TYPE_B;
+ x264_log( h, X264_LOG_WARNING, "B-ref at frame %d incompatible with B-pyramid %s \n",
+ frm->i_frame, x264_b_pyramid_names[h->param.i_bframe_pyramid] );
+ }
+ /* pyramid with multiple B-refs needs a big enough dpb that the preceding P-frame stays available.
+ smaller dpb could be supported by smart enough use of mmco, but it's easier just to forbid it. */
+ else if( frm->i_type == X264_TYPE_BREF && h->param.i_bframe_pyramid == X264_B_PYRAMID_NORMAL &&
+ brefs && h->param.i_frame_reference <= (brefs+3) )
+ {
+ frm->i_type = X264_TYPE_B;
+ x264_log( h, X264_LOG_WARNING, "B-ref at frame %d incompatible with B-pyramid %s and %d reference frames\n",
+ frm->i_frame, x264_b_pyramid_names[h->param.i_bframe_pyramid], h->param.i_frame_reference );
+ }
/* Limit GOP size */
- if( frm->i_frame - h->frames.i_last_idr >= h->param.i_keyint_max )
+ if( (!h->param.b_intra_refresh || frm->i_frame == 0) && frm->i_frame - h->lookahead->i_last_keyframe >= h->param.i_keyint_max )
{
if( frm->i_type == X264_TYPE_AUTO )
frm->i_type = X264_TYPE_IDR;
if( frm->i_type == X264_TYPE_IDR )
{
/* Close GOP */
+ h->lookahead->i_last_keyframe = frm->i_frame;
+ frm->b_keyframe = 1;
if( bframes > 0 )
{
bframes--;
- h->frames.next[bframes]->i_type = X264_TYPE_P;
- }
- else
- {
- h->i_frame_num = 0;
+ h->lookahead->next.list[bframes]->i_type = X264_TYPE_P;
}
}
- if( bframes == h->param.i_bframe
- || h->frames.next[bframes+1] == NULL )
+ if( bframes == h->param.i_bframe ||
+ !h->lookahead->next.list[bframes+1] )
{
if( IS_X264_TYPE_B( frm->i_type ) )
x264_log( h, X264_LOG_WARNING, "specified frame type is not compatible with max B-frames\n" );
frm->i_type = X264_TYPE_P;
}
+ if( frm->i_type == X264_TYPE_BREF )
+ brefs++;
+
if( frm->i_type == X264_TYPE_AUTO )
frm->i_type = X264_TYPE_B;
else if( !IS_X264_TYPE_B( frm->i_type ) ) break;
}
-}
-int x264_rc_analyse_slice( x264_t *h )
-{
- x264_mb_analysis_t a;
- x264_frame_t *frames[X264_LOOKAHEAD_MAX+2] = { NULL, };
- int p0=0, p1, b;
- int cost;
+ if( bframes )
+ h->lookahead->next.list[bframes-1]->b_last_minigop_bframe = 1;
+ h->lookahead->next.list[bframes]->i_bframes = bframes;
- x264_lowres_context_init( h, &a );
+ /* insert a bref into the sequence */
+ if( h->param.i_bframe_pyramid && bframes > 1 && !brefs )
+ {
+ h->lookahead->next.list[bframes/2]->i_type = X264_TYPE_BREF;
+ brefs++;
+ }
- if( IS_X264_TYPE_I(h->fenc->i_type) )
+ /* calculate the frame costs ahead of time for x264_rc_analyse_slice while we still have lowres */
+ if( h->param.rc.i_rc_method != X264_RC_CQP )
{
- p1 = b = 0;
- /* For MB-tree and VBV lookahead, we have to perform propagation analysis on I-frames too. */
- if( h->param.rc.b_mb_tree || (h->param.rc.i_vbv_buffer_size && h->param.rc.i_lookahead) )
+ x264_mb_analysis_t a;
+ int p0, p1, b;
+ p1 = b = bframes + 1;
+
+ x264_lowres_context_init( h, &a );
+
+ frames[0] = h->lookahead->last_nonb;
+ memcpy( &frames[1], h->lookahead->next.list, (bframes+1) * sizeof(x264_frame_t*) );
+ if( IS_X264_TYPE_I( h->lookahead->next.list[bframes]->i_type ) )
+ p0 = bframes + 1;
+ else // P
+ p0 = 0;
+
+ x264_slicetype_frame_cost( h, &a, frames, p0, p1, b, 0 );
+
+ if( (p0 != p1 || bframes) && h->param.rc.i_vbv_buffer_size )
{
- h->frames.last_nonb = h->fenc;
- x264_slicetype_analyse( h, 1 );
+ /* We need the intra costs for row SATDs. */
+ x264_slicetype_frame_cost( h, &a, frames, b, b, b, 0 );
+
+ /* We need B-frame costs for row SATDs. */
+ p0 = 0;
+ for( b = 1; b <= bframes; b++ )
+ {
+ if( frames[b]->i_type == X264_TYPE_B )
+ for( p1 = b; frames[p1]->i_type == X264_TYPE_B; )
+ p1++;
+ else
+ p1 = bframes + 1;
+ x264_slicetype_frame_cost( h, &a, frames, p0, p1, b, 0 );
+ if( frames[b]->i_type == X264_TYPE_BREF )
+ p0 = b;
+ }
}
}
- else if( X264_TYPE_P == h->fenc->i_type )
+
+ /* Analyse for weighted P frames */
+ if( !h->param.rc.b_stat_read && h->lookahead->next.list[bframes]->i_type == X264_TYPE_P
+ && h->param.analyse.i_weighted_pred == X264_WEIGHTP_SMART )
{
- p1 = 0;
- while( h->frames.current[p1] && IS_X264_TYPE_B( h->frames.current[p1]->i_type ) )
- p1++;
- p1++;
- b = p1;
+ x264_emms();
+ x264_weights_analyse( h, h->lookahead->next.list[bframes], h->lookahead->last_nonb, 0 );
}
+
+ /* shift sequence to coded order.
+ use a small temporary list to avoid shifting the entire next buffer around */
+ int i_coded = h->lookahead->next.list[0]->i_frame;
+ if( bframes )
+ {
+ int index[] = { brefs+1, 1 };
+ for( i = 0; i < bframes; i++ )
+ {
+ int idx = index[h->lookahead->next.list[i]->i_type == X264_TYPE_BREF]++;
+ frames[idx] = h->lookahead->next.list[i];
+ frames[idx]->i_reordered_pts = h->lookahead->next.list[idx]->i_pts;
+ }
+ frames[0] = h->lookahead->next.list[bframes];
+ frames[0]->i_reordered_pts = h->lookahead->next.list[0]->i_pts;
+ memcpy( h->lookahead->next.list, frames, (bframes+1) * sizeof(x264_frame_t*) );
+ }
+ for( i = 0; i <= bframes; i++ )
+ h->lookahead->next.list[i]->i_coded = i_coded++;
+}
+
+int x264_rc_analyse_slice( x264_t *h )
+{
+ int p0=0, p1, b;
+ int cost;
+ x264_emms();
+
+ if( IS_X264_TYPE_I(h->fenc->i_type) )
+ p1 = b = 0;
+ else if( h->fenc->i_type == X264_TYPE_P )
+ p1 = b = h->fenc->i_bframes + 1;
else //B
{
p1 = (h->fref1[0]->i_poc - h->fref0[0]->i_poc)/2;
- b = (h->fref1[0]->i_poc - h->fenc->i_poc)/2;
- frames[p1] = h->fref1[0];
+ b = (h->fenc->i_poc - h->fref0[0]->i_poc)/2;
}
- frames[p0] = h->fref0[0];
- frames[b] = h->fenc;
+ /* We don't need to assign p0/p1 since we are not performing any real analysis here. */
+ x264_frame_t **frames = &h->fenc - b;
- if( h->param.rc.b_mb_tree )
- cost = x264_slicetype_frame_cost_recalculate( h, frames, p0, p1, b );
- else
- {
- cost = x264_slicetype_frame_cost( h, &a, frames, p0, p1, b, 0 );
+ /* cost should have been already calculated by x264_slicetype_decide */
+ cost = frames[b]->i_cost_est[b-p0][p1-b];
+ assert( cost >= 0 );
- /* In AQ, use the weighted score instead. */
- if( h->param.rc.i_aq_mode )
- cost = frames[b]->i_cost_est_aq[b-p0][p1-b];
+ if( h->param.rc.b_mb_tree && !h->param.rc.b_stat_read )
+ {
+ cost = x264_slicetype_frame_cost_recalculate( h, frames, p0, p1, b );
+ if( b && h->param.rc.i_vbv_buffer_size )
+ x264_slicetype_frame_cost_recalculate( h, frames, b, b, b );
}
+ /* In AQ, use the weighted score instead. */
+ else if( h->param.rc.i_aq_mode )
+ cost = frames[b]->i_cost_est_aq[b-p0][p1-b];
h->fenc->i_row_satd = h->fenc->i_row_satds[b-p0][p1-b];
h->fdec->i_row_satd = h->fdec->i_row_satds[b-p0][p1-b];
h->fdec->i_satd = cost;
memcpy( h->fdec->i_row_satd, h->fenc->i_row_satd, h->sps->i_mb_height * sizeof(int) );
+ if( !IS_X264_TYPE_I(h->fenc->i_type) )
+ memcpy( h->fdec->i_row_satds[0][0], h->fenc->i_row_satds[0][0], h->sps->i_mb_height * sizeof(int) );
+
+ if( h->param.b_intra_refresh && h->param.rc.i_vbv_buffer_size && h->fenc->i_type == X264_TYPE_P )
+ {
+ int x, y;
+ int ip_factor = 256 * h->param.rc.f_ip_factor; /* fix8 */
+ for( y = 0; y < h->sps->i_mb_height; y++ )
+ {
+ int mb_xy = y * h->mb.i_mb_stride;
+ for( x = h->fdec->i_pir_start_col; x <= h->fdec->i_pir_end_col; x++, mb_xy++ )
+ {
+ int intra_cost = (h->fenc->i_intra_cost[mb_xy] * ip_factor + 128) >> 8;
+ int inter_cost = h->fenc->lowres_costs[b-p0][p1-b][mb_xy];
+ int diff = intra_cost - inter_cost;
+ h->fdec->i_row_satd[y] += (diff * frames[b]->i_inv_qscale_factor[mb_xy] + 128) >> 8;
+ cost += diff;
+ }
+ }
+ }
+
return cost;
}
projects / x264 / blobdiff