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2bd90c13a0
vpx/vp8/encoder/encodeframe.c
Yaowu Xu 10ed60dc71 adjusting the calculation of errorperbit 
RDMULT/RDDIV defines a bit worth of distortion in term of sum squared
difference. This has also been used as errorperbit in subpixel motion
search, where the distortions computed as variance of the difference.
The variance of differences is different from sum squared differences
by amount of DC squared. Typically, for inter predicted MBs, this
difference averages around 10% between the two distortion, so this patch
introduces a 110% constant in deriving errorperbit from RDMULT/RDDIV.

Test on CIF set shows small but positive gain on overall PSNR (.03%)
and SSIM (.07%), overall impact on average PSNR is 0.

Change-Id: I95425f922d037b4d96083064a10c7cdd4948ee62
2011-06-20 16:32:30 -07:00

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/*
* Copyright (c) 2010 The WebM project authors. All Rights Reserved.
*
* Use of this source code is governed by a BSD-style license
* that can be found in the LICENSE file in the root of the source
* tree. An additional intellectual property rights grant can be found
* in the file PATENTS. All contributing project authors may
* be found in the AUTHORS file in the root of the source tree.
*/
#include "vpx_ports/config.h"
#include "encodemb.h"
#include "encodemv.h"
#include "vp8/common/common.h"
#include "onyx_int.h"
#include "vp8/common/extend.h"
#include "vp8/common/entropymode.h"
#include "vp8/common/quant_common.h"
#include "segmentation.h"
#include "vp8/common/setupintrarecon.h"
#include "encodeintra.h"
#include "vp8/common/reconinter.h"
#include "rdopt.h"
#include "pickinter.h"
#include "vp8/common/findnearmv.h"
#include "vp8/common/reconintra.h"
#include <stdio.h>
#include <limits.h>
#include "vp8/common/subpixel.h"
#include "vpx_ports/vpx_timer.h"
#if CONFIG_RUNTIME_CPU_DETECT
#define RTCD(x) &cpi->common.rtcd.x
#define IF_RTCD(x) (x)
#else
#define RTCD(x) NULL
#define IF_RTCD(x) NULL
#endif
extern void vp8_stuff_mb(VP8_COMP *cpi, MACROBLOCKD *x, TOKENEXTRA **t) ;
extern void vp8cx_initialize_me_consts(VP8_COMP *cpi, int QIndex);
extern void vp8_auto_select_speed(VP8_COMP *cpi);
extern void vp8cx_init_mbrthread_data(VP8_COMP *cpi,
MACROBLOCK *x,
MB_ROW_COMP *mbr_ei,
int mb_row,
int count);
void vp8_build_block_offsets(MACROBLOCK *x);
void vp8_setup_block_ptrs(MACROBLOCK *x);
int vp8cx_encode_inter_macroblock(VP8_COMP *cpi, MACROBLOCK *x, TOKENEXTRA **t, int recon_yoffset, int recon_uvoffset);
int vp8cx_encode_intra_macro_block(VP8_COMP *cpi, MACROBLOCK *x, TOKENEXTRA **t);
static void adjust_act_zbin( VP8_COMP *cpi, MACROBLOCK *x );
#ifdef MODE_STATS
unsigned int inter_y_modes[10] = {0, 0, 0, 0, 0, 0, 0, 0, 0, 0};
unsigned int inter_uv_modes[4] = {0, 0, 0, 0};
unsigned int inter_b_modes[15] = {0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0};
unsigned int y_modes[5] = {0, 0, 0, 0, 0};
unsigned int uv_modes[4] = {0, 0, 0, 0};
unsigned int b_modes[14] = {0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0};
#endif
/* activity_avg must be positive, or flat regions could get a zero weight
* (infinite lambda), which confounds analysis.
* This also avoids the need for divide by zero checks in
* vp8_activity_masking().
*/
#define VP8_ACTIVITY_AVG_MIN (64)
/* This is used as a reference when computing the source variance for the
* purposes of activity masking.
* Eventually this should be replaced by custom no-reference routines,
* which will be faster.
*/
static const unsigned char VP8_VAR_OFFS[16]=
{
128,128,128,128,128,128,128,128,128,128,128,128,128,128,128,128
};
// Original activity measure from Tim T's code.
static unsigned int tt_activity_measure( VP8_COMP *cpi, MACROBLOCK *x )
{
unsigned int act;
unsigned int sse;
/* TODO: This could also be done over smaller areas (8x8), but that would
* require extensive changes elsewhere, as lambda is assumed to be fixed
* over an entire MB in most of the code.
* Another option is to compute four 8x8 variances, and pick a single
* lambda using a non-linear combination (e.g., the smallest, or second
* smallest, etc.).
*/
act = VARIANCE_INVOKE(&cpi->rtcd.variance, var16x16)(x->src.y_buffer,
x->src.y_stride, VP8_VAR_OFFS, 0, &sse);
act = act<<4;
/* If the region is flat, lower the activity some more. */
if (act < 8<<12)
act = act < 5<<12 ? act : 5<<12;
return act;
}
// Stub for alternative experimental activity measures.
static unsigned int alt_activity_measure( VP8_COMP *cpi,
MACROBLOCK *x, int use_dc_pred )
{
return vp8_encode_intra(cpi,x, use_dc_pred);
}
// Measure the activity of the current macroblock
// What we measure here is TBD so abstracted to this function
#define ALT_ACT_MEASURE 1
static unsigned int mb_activity_measure( VP8_COMP *cpi, MACROBLOCK *x,
int mb_row, int mb_col)
{
unsigned int mb_activity;
if ( ALT_ACT_MEASURE )
{
int use_dc_pred = (mb_col || mb_row) && (!mb_col || !mb_row);
// Or use and alternative.
mb_activity = alt_activity_measure( cpi, x, use_dc_pred );
}
else
{
// Original activity measure from Tim T's code.
mb_activity = tt_activity_measure( cpi, x );
}
if ( mb_activity < VP8_ACTIVITY_AVG_MIN )
mb_activity = VP8_ACTIVITY_AVG_MIN;
return mb_activity;
}
// Calculate an "average" mb activity value for the frame
#define ACT_MEDIAN 0
static void calc_av_activity( VP8_COMP *cpi, INT64 activity_sum )
{
#if ACT_MEDIAN
// Find median: Simple n^2 algorithm for experimentation
{
unsigned int median;
unsigned int i,j;
unsigned int * sortlist;
unsigned int tmp;
// Create a list to sort to
CHECK_MEM_ERROR(sortlist,
vpx_calloc(sizeof(unsigned int),
cpi->common.MBs));
// Copy map to sort list
vpx_memcpy( sortlist, cpi->mb_activity_map,
sizeof(unsigned int) * cpi->common.MBs );
// Ripple each value down to its correct position
for ( i = 1; i < cpi->common.MBs; i ++ )
{
for ( j = i; j > 0; j -- )
{
if ( sortlist[j] < sortlist[j-1] )
{
// Swap values
tmp = sortlist[j-1];
sortlist[j-1] = sortlist[j];
sortlist[j] = tmp;
}
else
break;
}
}
// Even number MBs so estimate median as mean of two either side.
median = ( 1 + sortlist[cpi->common.MBs >> 1] +
sortlist[(cpi->common.MBs >> 1) + 1] ) >> 1;
cpi->activity_avg = median;
vpx_free(sortlist);
}
#else
// Simple mean for now
cpi->activity_avg = (unsigned int)(activity_sum/cpi->common.MBs);
#endif
if (cpi->activity_avg < VP8_ACTIVITY_AVG_MIN)
cpi->activity_avg = VP8_ACTIVITY_AVG_MIN;
// Experimental code: return fixed value normalized for several clips
if ( ALT_ACT_MEASURE )
cpi->activity_avg = 100000;
}
#define USE_ACT_INDEX 0
#define OUTPUT_NORM_ACT_STATS 0
#if USE_ACT_INDEX
// Calculate and activity index for each mb
static void calc_activity_index( VP8_COMP *cpi, MACROBLOCK *x )
{
VP8_COMMON *const cm = & cpi->common;
int mb_row, mb_col;
INT64 act;
INT64 a;
INT64 b;
#if OUTPUT_NORM_ACT_STATS
FILE *f = fopen("norm_act.stt", "a");
fprintf(f, "\n%12d\n", cpi->activity_avg );
#endif
// Reset pointers to start of activity map
x->mb_activity_ptr = cpi->mb_activity_map;
// Calculate normalized mb activity number.
for (mb_row = 0; mb_row < cm->mb_rows; mb_row++)
{
// for each macroblock col in image
for (mb_col = 0; mb_col < cm->mb_cols; mb_col++)
{
// Read activity from the map
act = *(x->mb_activity_ptr);
// Calculate a normalized activity number
a = act + 4*cpi->activity_avg;
b = 4*act + cpi->activity_avg;
if ( b >= a )
*(x->activity_ptr) = (int)((b + (a>>1))/a) - 1;
else
*(x->activity_ptr) = 1 - (int)((a + (b>>1))/b);
#if OUTPUT_NORM_ACT_STATS
fprintf(f, " %6d", *(x->mb_activity_ptr));
#endif
// Increment activity map pointers
x->mb_activity_ptr++;
}
#if OUTPUT_NORM_ACT_STATS
fprintf(f, "\n");
#endif
}
#if OUTPUT_NORM_ACT_STATS
fclose(f);
#endif
}
#endif
// Loop through all MBs. Note activity of each, average activity and
// calculate a normalized activity for each
static void build_activity_map( VP8_COMP *cpi )
{
MACROBLOCK *const x = & cpi->mb;
MACROBLOCKD *xd = &x->e_mbd;
VP8_COMMON *const cm = & cpi->common;
#if ALT_ACT_MEASURE
YV12_BUFFER_CONFIG *new_yv12 = &cm->yv12_fb[cm->new_fb_idx];
int recon_yoffset;
int recon_y_stride = new_yv12->y_stride;
#endif
int mb_row, mb_col;
unsigned int mb_activity;
INT64 activity_sum = 0;
// for each macroblock row in image
for (mb_row = 0; mb_row < cm->mb_rows; mb_row++)
{
#if ALT_ACT_MEASURE
// reset above block coeffs
xd->up_available = (mb_row != 0);
recon_yoffset = (mb_row * recon_y_stride * 16);
#endif
// for each macroblock col in image
for (mb_col = 0; mb_col < cm->mb_cols; mb_col++)
{
#if ALT_ACT_MEASURE
xd->dst.y_buffer = new_yv12->y_buffer + recon_yoffset;
xd->left_available = (mb_col != 0);
recon_yoffset += 16;
#endif
// measure activity
mb_activity = mb_activity_measure( cpi, x, mb_row, mb_col );
// Keep frame sum
activity_sum += mb_activity;
// Store MB level activity details.
*x->mb_activity_ptr = mb_activity;
// Increment activity map pointer
x->mb_activity_ptr++;
// adjust to the next column of source macroblocks
x->src.y_buffer += 16;
}
// adjust to the next row of mbs
x->src.y_buffer += 16 * x->src.y_stride - 16 * cm->mb_cols;
#if ALT_ACT_MEASURE
//extend the recon for intra prediction
vp8_extend_mb_row(new_yv12, xd->dst.y_buffer + 16,
xd->dst.u_buffer + 8, xd->dst.v_buffer + 8);
#endif
}
// Calculate an "average" MB activity
calc_av_activity(cpi, activity_sum);
#if USE_ACT_INDEX
// Calculate an activity index number of each mb
calc_activity_index( cpi, x );
#endif
}
// Macroblock activity masking
void vp8_activity_masking(VP8_COMP *cpi, MACROBLOCK *x)
{
#if USE_ACT_INDEX
x->rdmult += *(x->mb_activity_ptr) * (x->rdmult >> 2);
x->errorperbit = x->rdmult * 100 /(110 * x->rddiv);
x->errorperbit += (x->errorperbit==0);
#else
INT64 a;
INT64 b;
INT64 act = *(x->mb_activity_ptr);
// Apply the masking to the RD multiplier.
a = act + (2*cpi->activity_avg);
b = (2*act) + cpi->activity_avg;
x->rdmult = (unsigned int)(((INT64)x->rdmult*b + (a>>1))/a);
x->errorperbit = x->rdmult * 100 /(110 * x->rddiv);
x->errorperbit += (x->errorperbit==0);
#endif
// Activity based Zbin adjustment
adjust_act_zbin(cpi, x);
}
static
void encode_mb_row(VP8_COMP *cpi,
VP8_COMMON *cm,
int mb_row,
MACROBLOCK *x,
MACROBLOCKD *xd,
TOKENEXTRA **tp,
int *segment_counts,
int *totalrate)
{
int i;
int recon_yoffset, recon_uvoffset;
int mb_col;
int ref_fb_idx = cm->lst_fb_idx;
int dst_fb_idx = cm->new_fb_idx;
int recon_y_stride = cm->yv12_fb[ref_fb_idx].y_stride;
int recon_uv_stride = cm->yv12_fb[ref_fb_idx].uv_stride;
int map_index = (mb_row * cpi->common.mb_cols);
#if CONFIG_MULTITHREAD
const int nsync = cpi->mt_sync_range;
const int rightmost_col = cm->mb_cols - 1;
volatile const int *last_row_current_mb_col;
if ((cpi->b_multi_threaded != 0) && (mb_row != 0))
last_row_current_mb_col = &cpi->mt_current_mb_col[mb_row - 1];
else
last_row_current_mb_col = &rightmost_col;
#endif
// reset above block coeffs
xd->above_context = cm->above_context;
xd->up_available = (mb_row != 0);
recon_yoffset = (mb_row * recon_y_stride * 16);
recon_uvoffset = (mb_row * recon_uv_stride * 8);
cpi->tplist[mb_row].start = *tp;
//printf("Main mb_row = %d\n", mb_row);
// Distance of Mb to the top & bottom edges, specified in 1/8th pel
// units as they are always compared to values that are in 1/8th pel units
xd->mb_to_top_edge = -((mb_row * 16) << 3);
xd->mb_to_bottom_edge = ((cm->mb_rows - 1 - mb_row) * 16) << 3;
// Set up limit values for vertical motion vector components
// to prevent them extending beyond the UMV borders
x->mv_row_min = -((mb_row * 16) + (VP8BORDERINPIXELS - 16));
x->mv_row_max = ((cm->mb_rows - 1 - mb_row) * 16)
+ (VP8BORDERINPIXELS - 16);
// Set the mb activity pointer to the start of the row.
x->mb_activity_ptr = &cpi->mb_activity_map[map_index];
// for each macroblock col in image
for (mb_col = 0; mb_col < cm->mb_cols; mb_col++)
{
// Distance of Mb to the left & right edges, specified in
// 1/8th pel units as they are always compared to values
// that are in 1/8th pel units
xd->mb_to_left_edge = -((mb_col * 16) << 3);
xd->mb_to_right_edge = ((cm->mb_cols - 1 - mb_col) * 16) << 3;
// Set up limit values for horizontal motion vector components
// to prevent them extending beyond the UMV borders
x->mv_col_min = -((mb_col * 16) + (VP8BORDERINPIXELS - 16));
x->mv_col_max = ((cm->mb_cols - 1 - mb_col) * 16)
+ (VP8BORDERINPIXELS - 16);
xd->dst.y_buffer = cm->yv12_fb[dst_fb_idx].y_buffer + recon_yoffset;
xd->dst.u_buffer = cm->yv12_fb[dst_fb_idx].u_buffer + recon_uvoffset;
xd->dst.v_buffer = cm->yv12_fb[dst_fb_idx].v_buffer + recon_uvoffset;
xd->left_available = (mb_col != 0);
x->rddiv = cpi->RDDIV;
x->rdmult = cpi->RDMULT;
#if CONFIG_MULTITHREAD
if ((cpi->b_multi_threaded != 0) && (mb_row != 0))
{
if ((mb_col & (nsync - 1)) == 0)
{
while (mb_col > (*last_row_current_mb_col - nsync)
&& (*last_row_current_mb_col) != (cm->mb_cols - 1))
{
x86_pause_hint();
thread_sleep(0);
}
}
}
#endif
if(cpi->oxcf.tuning == VP8_TUNE_SSIM)
vp8_activity_masking(cpi, x);
// Is segmentation enabled
// MB level adjutment to quantizer
if (xd->segmentation_enabled)
{
// Code to set segment id in xd->mbmi.segment_id for current MB (with range checking)
if (cpi->segmentation_map[map_index+mb_col] <= 3)
xd->mode_info_context->mbmi.segment_id = cpi->segmentation_map[map_index+mb_col];
else
xd->mode_info_context->mbmi.segment_id = 0;
vp8cx_mb_init_quantizer(cpi, x);
}
else
xd->mode_info_context->mbmi.segment_id = 0; // Set to Segment 0 by default
x->active_ptr = cpi->active_map + map_index + mb_col;
if (cm->frame_type == KEY_FRAME)
{
*totalrate += vp8cx_encode_intra_macro_block(cpi, x, tp);
#ifdef MODE_STATS
y_modes[xd->mbmi.mode] ++;
#endif
}
else
{
*totalrate += vp8cx_encode_inter_macroblock(cpi, x, tp, recon_yoffset, recon_uvoffset);
#ifdef MODE_STATS
inter_y_modes[xd->mbmi.mode] ++;
if (xd->mbmi.mode == SPLITMV)
{
int b;
for (b = 0; b < xd->mbmi.partition_count; b++)
{
inter_b_modes[x->partition->bmi[b].mode] ++;
}
}
#endif
// Count of last ref frame 0,0 useage
if ((xd->mode_info_context->mbmi.mode == ZEROMV) && (xd->mode_info_context->mbmi.ref_frame == LAST_FRAME))
cpi->inter_zz_count ++;
// Special case code for cyclic refresh
// If cyclic update enabled then copy xd->mbmi.segment_id; (which may have been updated based on mode
// during vp8cx_encode_inter_macroblock()) back into the global sgmentation map
if (cpi->cyclic_refresh_mode_enabled && xd->segmentation_enabled)
{
cpi->segmentation_map[map_index+mb_col] = xd->mode_info_context->mbmi.segment_id;
// If the block has been refreshed mark it as clean (the magnitude of the -ve influences how long it will be before we consider another refresh):
// Else if it was coded (last frame 0,0) and has not already been refreshed then mark it as a candidate for cleanup next time (marked 0)
// else mark it as dirty (1).
if (xd->mode_info_context->mbmi.segment_id)
cpi->cyclic_refresh_map[map_index+mb_col] = -1;
else if ((xd->mode_info_context->mbmi.mode == ZEROMV) && (xd->mode_info_context->mbmi.ref_frame == LAST_FRAME))
{
if (cpi->cyclic_refresh_map[map_index+mb_col] == 1)
cpi->cyclic_refresh_map[map_index+mb_col] = 0;
}
else
cpi->cyclic_refresh_map[map_index+mb_col] = 1;
}
}
cpi->tplist[mb_row].stop = *tp;
// Increment pointer into gf useage flags structure.
x->gf_active_ptr++;
// Increment the activity mask pointers.
x->mb_activity_ptr++;
/* save the block info */
for (i = 0; i < 16; i++)
xd->mode_info_context->bmi[i] = xd->block[i].bmi;
// adjust to the next column of macroblocks
x->src.y_buffer += 16;
x->src.u_buffer += 8;
x->src.v_buffer += 8;
recon_yoffset += 16;
recon_uvoffset += 8;
// Keep track of segment useage
segment_counts[xd->mode_info_context->mbmi.segment_id] ++;
// skip to next mb
xd->mode_info_context++;
x->partition_info++;
xd->above_context++;
#if CONFIG_MULTITHREAD
if (cpi->b_multi_threaded != 0)
{
cpi->mt_current_mb_col[mb_row] = mb_col;
}
#endif
}
//extend the recon for intra prediction
vp8_extend_mb_row(
&cm->yv12_fb[dst_fb_idx],
xd->dst.y_buffer + 16,
xd->dst.u_buffer + 8,
xd->dst.v_buffer + 8);
// this is to account for the border
xd->mode_info_context++;
x->partition_info++;
#if CONFIG_MULTITHREAD
if ((cpi->b_multi_threaded != 0) && (mb_row == cm->mb_rows - 1))
{
sem_post(&cpi->h_event_end_encoding); /* signal frame encoding end */
}
#endif
}
void init_encode_frame_mb_context(VP8_COMP *cpi)
{
MACROBLOCK *const x = & cpi->mb;
VP8_COMMON *const cm = & cpi->common;
MACROBLOCKD *const xd = & x->e_mbd;
// GF active flags data structure
x->gf_active_ptr = (signed char *)cpi->gf_active_flags;
// Activity map pointer
x->mb_activity_ptr = cpi->mb_activity_map;
x->vector_range = 32;
x->act_zbin_adj = 0;
x->partition_info = x->pi;
xd->mode_info_context = cm->mi;
xd->mode_info_stride = cm->mode_info_stride;
xd->frame_type = cm->frame_type;
xd->frames_since_golden = cm->frames_since_golden;
xd->frames_till_alt_ref_frame = cm->frames_till_alt_ref_frame;
// reset intra mode contexts
if (cm->frame_type == KEY_FRAME)
vp8_init_mbmode_probs(cm);
// Copy data over into macro block data sturctures.
x->src = * cpi->Source;
xd->pre = cm->yv12_fb[cm->lst_fb_idx];
xd->dst = cm->yv12_fb[cm->new_fb_idx];
// set up frame for intra coded blocks
vp8_setup_intra_recon(&cm->yv12_fb[cm->new_fb_idx]);
vp8_build_block_offsets(x);
vp8_setup_block_dptrs(&x->e_mbd);
vp8_setup_block_ptrs(x);
xd->mode_info_context->mbmi.mode = DC_PRED;
xd->mode_info_context->mbmi.uv_mode = DC_PRED;
xd->left_context = &cm->left_context;
vp8_zero(cpi->count_mb_ref_frame_usage)
vp8_zero(cpi->ymode_count)
vp8_zero(cpi->uv_mode_count)
x->mvc = cm->fc.mvc;
vpx_memset(cm->above_context, 0,
sizeof(ENTROPY_CONTEXT_PLANES) * cm->mb_cols);
xd->ref_frame_cost[INTRA_FRAME] = vp8_cost_zero(cpi->prob_intra_coded);
// Special case treatment when GF and ARF are not sensible options for reference
if (cpi->ref_frame_flags == VP8_LAST_FLAG)
{
xd->ref_frame_cost[LAST_FRAME] = vp8_cost_one(cpi->prob_intra_coded)
+ vp8_cost_zero(255);
xd->ref_frame_cost[GOLDEN_FRAME] = vp8_cost_one(cpi->prob_intra_coded)
+ vp8_cost_one(255)
+ vp8_cost_zero(128);
xd->ref_frame_cost[ALTREF_FRAME] = vp8_cost_one(cpi->prob_intra_coded)
+ vp8_cost_one(255)
+ vp8_cost_one(128);
}
else
{
xd->ref_frame_cost[LAST_FRAME] = vp8_cost_one(cpi->prob_intra_coded)
+ vp8_cost_zero(cpi->prob_last_coded);
xd->ref_frame_cost[GOLDEN_FRAME] = vp8_cost_one(cpi->prob_intra_coded)
+ vp8_cost_one(cpi->prob_last_coded)
+ vp8_cost_zero(cpi->prob_gf_coded);
xd->ref_frame_cost[ALTREF_FRAME] = vp8_cost_one(cpi->prob_intra_coded)
+ vp8_cost_one(cpi->prob_last_coded)
+ vp8_cost_one(cpi->prob_gf_coded);
}
}
void vp8_encode_frame(VP8_COMP *cpi)
{
int mb_row;
MACROBLOCK *const x = & cpi->mb;
VP8_COMMON *const cm = & cpi->common;
MACROBLOCKD *const xd = & x->e_mbd;
TOKENEXTRA *tp = cpi->tok;
int segment_counts[MAX_MB_SEGMENTS];
int totalrate;
vpx_memset(segment_counts, 0, sizeof(segment_counts));
totalrate = 0;
if (cpi->compressor_speed == 2)
{
if (cpi->oxcf.cpu_used < 0)
cpi->Speed = -(cpi->oxcf.cpu_used);
else
vp8_auto_select_speed(cpi);
}
// Functions setup for all frame types so we can use MC in AltRef
if (cm->mcomp_filter_type == SIXTAP)
{
xd->subpixel_predict = SUBPIX_INVOKE(
&cpi->common.rtcd.subpix, sixtap4x4);
xd->subpixel_predict8x4 = SUBPIX_INVOKE(
&cpi->common.rtcd.subpix, sixtap8x4);
xd->subpixel_predict8x8 = SUBPIX_INVOKE(
&cpi->common.rtcd.subpix, sixtap8x8);
xd->subpixel_predict16x16 = SUBPIX_INVOKE(
&cpi->common.rtcd.subpix, sixtap16x16);
}
else
{
xd->subpixel_predict = SUBPIX_INVOKE(
&cpi->common.rtcd.subpix, bilinear4x4);
xd->subpixel_predict8x4 = SUBPIX_INVOKE(
&cpi->common.rtcd.subpix, bilinear8x4);
xd->subpixel_predict8x8 = SUBPIX_INVOKE(
&cpi->common.rtcd.subpix, bilinear8x8);
xd->subpixel_predict16x16 = SUBPIX_INVOKE(
&cpi->common.rtcd.subpix, bilinear16x16);
}
// Reset frame count of inter 0,0 motion vector useage.
cpi->inter_zz_count = 0;
vpx_memset(segment_counts, 0, sizeof(segment_counts));
cpi->prediction_error = 0;
cpi->intra_error = 0;
cpi->skip_true_count = 0;
cpi->skip_false_count = 0;
#if 0
// Experimental code
cpi->frame_distortion = 0;
cpi->last_mb_distortion = 0;
#endif
xd->mode_info_context = cm->mi;
vp8_zero(cpi->MVcount);
vp8_zero(cpi->coef_counts);
vp8cx_frame_init_quantizer(cpi);
vp8_initialize_rd_consts(cpi,
vp8_dc_quant(cm->base_qindex, cm->y1dc_delta_q));
vp8cx_initialize_me_consts(cpi, cm->base_qindex);
if(cpi->oxcf.tuning == VP8_TUNE_SSIM)
{
// Initialize encode frame context.
init_encode_frame_mb_context(cpi);
// Build a frame level activity map
build_activity_map(cpi);
}
// re-initencode frame context.
init_encode_frame_mb_context(cpi);
{
struct vpx_usec_timer emr_timer;
vpx_usec_timer_start(&emr_timer);
#if CONFIG_MULTITHREAD
if (cpi->b_multi_threaded)
{
int i;
vp8cx_init_mbrthread_data(cpi, x, cpi->mb_row_ei, 1, cpi->encoding_thread_count);
for (i = 0; i < cm->mb_rows; i++)
cpi->mt_current_mb_col[i] = -1;
for (i = 0; i < cpi->encoding_thread_count; i++)
{
sem_post(&cpi->h_event_start_encoding[i]);
}
for (mb_row = 0; mb_row < cm->mb_rows; mb_row += (cpi->encoding_thread_count + 1))
{
vp8_zero(cm->left_context)
tp = cpi->tok + mb_row * (cm->mb_cols * 16 * 24);
encode_mb_row(cpi, cm, mb_row, x, xd, &tp, segment_counts, &totalrate);
// adjust to the next row of mbs
x->src.y_buffer += 16 * x->src.y_stride * (cpi->encoding_thread_count + 1) - 16 * cm->mb_cols;
x->src.u_buffer += 8 * x->src.uv_stride * (cpi->encoding_thread_count + 1) - 8 * cm->mb_cols;
x->src.v_buffer += 8 * x->src.uv_stride * (cpi->encoding_thread_count + 1) - 8 * cm->mb_cols;
xd->mode_info_context += xd->mode_info_stride * cpi->encoding_thread_count;
x->partition_info += xd->mode_info_stride * cpi->encoding_thread_count;
x->gf_active_ptr += cm->mb_cols * cpi->encoding_thread_count;
}
sem_wait(&cpi->h_event_end_encoding); /* wait for other threads to finish */
cpi->tok_count = 0;
for (mb_row = 0; mb_row < cm->mb_rows; mb_row ++)
{
cpi->tok_count += cpi->tplist[mb_row].stop - cpi->tplist[mb_row].start;
}
if (xd->segmentation_enabled)
{
int i, j;
if (xd->segmentation_enabled)
{
for (i = 0; i < cpi->encoding_thread_count; i++)
{
for (j = 0; j < 4; j++)
segment_counts[j] += cpi->mb_row_ei[i].segment_counts[j];
}
}
}
for (i = 0; i < cpi->encoding_thread_count; i++)
{
totalrate += cpi->mb_row_ei[i].totalrate;
}
}
else
#endif
{
// for each macroblock row in image
for (mb_row = 0; mb_row < cm->mb_rows; mb_row++)
{
vp8_zero(cm->left_context)
encode_mb_row(cpi, cm, mb_row, x, xd, &tp, segment_counts, &totalrate);
// adjust to the next row of mbs
x->src.y_buffer += 16 * x->src.y_stride - 16 * cm->mb_cols;
x->src.u_buffer += 8 * x->src.uv_stride - 8 * cm->mb_cols;
x->src.v_buffer += 8 * x->src.uv_stride - 8 * cm->mb_cols;
}
cpi->tok_count = tp - cpi->tok;
}
vpx_usec_timer_mark(&emr_timer);
cpi->time_encode_mb_row += vpx_usec_timer_elapsed(&emr_timer);
}
// Work out the segment probabilites if segmentation is enabled
if (xd->segmentation_enabled)
{
int tot_count;
int i;
// Set to defaults
vpx_memset(xd->mb_segment_tree_probs, 255 , sizeof(xd->mb_segment_tree_probs));
tot_count = segment_counts[0] + segment_counts[1] + segment_counts[2] + segment_counts[3];
if (tot_count)
{
xd->mb_segment_tree_probs[0] = ((segment_counts[0] + segment_counts[1]) * 255) / tot_count;
tot_count = segment_counts[0] + segment_counts[1];
if (tot_count > 0)
{
xd->mb_segment_tree_probs[1] = (segment_counts[0] * 255) / tot_count;
}
tot_count = segment_counts[2] + segment_counts[3];
if (tot_count > 0)
xd->mb_segment_tree_probs[2] = (segment_counts[2] * 255) / tot_count;
// Zero probabilities not allowed
for (i = 0; i < MB_FEATURE_TREE_PROBS; i ++)
{
if (xd->mb_segment_tree_probs[i] == 0)
xd->mb_segment_tree_probs[i] = 1;
}
}
}
// 256 rate units to the bit
cpi->projected_frame_size = totalrate >> 8; // projected_frame_size in units of BYTES
// Make a note of the percentage MBs coded Intra.
if (cm->frame_type == KEY_FRAME)
{
cpi->this_frame_percent_intra = 100;
}
else
{
int tot_modes;
tot_modes = cpi->count_mb_ref_frame_usage[INTRA_FRAME]
+ cpi->count_mb_ref_frame_usage[LAST_FRAME]
+ cpi->count_mb_ref_frame_usage[GOLDEN_FRAME]
+ cpi->count_mb_ref_frame_usage[ALTREF_FRAME];
if (tot_modes)
cpi->this_frame_percent_intra = cpi->count_mb_ref_frame_usage[INTRA_FRAME] * 100 / tot_modes;
}
#if 0
{
int cnt = 0;
int flag[2] = {0, 0};
for (cnt = 0; cnt < MVPcount; cnt++)
{
if (cm->fc.pre_mvc[0][cnt] != cm->fc.mvc[0][cnt])
{
flag[0] = 1;
vpx_memcpy(cm->fc.pre_mvc[0], cm->fc.mvc[0], MVPcount);
break;
}
}
for (cnt = 0; cnt < MVPcount; cnt++)
{
if (cm->fc.pre_mvc[1][cnt] != cm->fc.mvc[1][cnt])
{
flag[1] = 1;
vpx_memcpy(cm->fc.pre_mvc[1], cm->fc.mvc[1], MVPcount);
break;
}
}
if (flag[0] || flag[1])
vp8_build_component_cost_table(cpi->mb.mvcost, (const MV_CONTEXT *) cm->fc.mvc, flag);
}
#endif
// Adjust the projected reference frame useage probability numbers to reflect
// what we have just seen. This may be usefull when we make multiple itterations
// of the recode loop rather than continuing to use values from the previous frame.
if ((cm->frame_type != KEY_FRAME) && !cm->refresh_alt_ref_frame && !cm->refresh_golden_frame)
{
const int *const rfct = cpi->count_mb_ref_frame_usage;
const int rf_intra = rfct[INTRA_FRAME];
const int rf_inter = rfct[LAST_FRAME] + rfct[GOLDEN_FRAME] + rfct[ALTREF_FRAME];
if ((rf_intra + rf_inter) > 0)
{
cpi->prob_intra_coded = (rf_intra * 255) / (rf_intra + rf_inter);
if (cpi->prob_intra_coded < 1)
cpi->prob_intra_coded = 1;
if ((cm->frames_since_golden > 0) || cpi->source_alt_ref_active)
{
cpi->prob_last_coded = rf_inter ? (rfct[LAST_FRAME] * 255) / rf_inter : 128;
if (cpi->prob_last_coded < 1)
cpi->prob_last_coded = 1;
cpi->prob_gf_coded = (rfct[GOLDEN_FRAME] + rfct[ALTREF_FRAME])
? (rfct[GOLDEN_FRAME] * 255) / (rfct[GOLDEN_FRAME] + rfct[ALTREF_FRAME]) : 128;
if (cpi->prob_gf_coded < 1)
cpi->prob_gf_coded = 1;
}
}
}
#if 0
// Keep record of the total distortion this time around for future use
cpi->last_frame_distortion = cpi->frame_distortion;
#endif
}
void vp8_setup_block_ptrs(MACROBLOCK *x)
{
int r, c;
int i;
for (r = 0; r < 4; r++)
{
for (c = 0; c < 4; c++)
{
x->block[r*4+c].src_diff = x->src_diff + r * 4 * 16 + c * 4;
}
}
for (r = 0; r < 2; r++)
{
for (c = 0; c < 2; c++)
{
x->block[16 + r*2+c].src_diff = x->src_diff + 256 + r * 4 * 8 + c * 4;
}
}
for (r = 0; r < 2; r++)
{
for (c = 0; c < 2; c++)
{
x->block[20 + r*2+c].src_diff = x->src_diff + 320 + r * 4 * 8 + c * 4;
}
}
x->block[24].src_diff = x->src_diff + 384;
for (i = 0; i < 25; i++)
{
x->block[i].coeff = x->coeff + i * 16;
}
}
void vp8_build_block_offsets(MACROBLOCK *x)
{
int block = 0;
int br, bc;
vp8_build_block_doffsets(&x->e_mbd);
// y blocks
for (br = 0; br < 4; br++)
{
for (bc = 0; bc < 4; bc++)
{
BLOCK *this_block = &x->block[block];
this_block->base_src = &x->src.y_buffer;
this_block->src_stride = x->src.y_stride;
this_block->src = 4 * br * this_block->src_stride + 4 * bc;
++block;
}
}
// u blocks
for (br = 0; br < 2; br++)
{
for (bc = 0; bc < 2; bc++)
{
BLOCK *this_block = &x->block[block];
this_block->base_src = &x->src.u_buffer;
this_block->src_stride = x->src.uv_stride;
this_block->src = 4 * br * this_block->src_stride + 4 * bc;
++block;
}
}
// v blocks
for (br = 0; br < 2; br++)
{
for (bc = 0; bc < 2; bc++)
{
BLOCK *this_block = &x->block[block];
this_block->base_src = &x->src.v_buffer;
this_block->src_stride = x->src.uv_stride;
this_block->src = 4 * br * this_block->src_stride + 4 * bc;
++block;
}
}
}
static void sum_intra_stats(VP8_COMP *cpi, MACROBLOCK *x)
{
const MACROBLOCKD *xd = & x->e_mbd;
const MB_PREDICTION_MODE m = xd->mode_info_context->mbmi.mode;
const MB_PREDICTION_MODE uvm = xd->mode_info_context->mbmi.uv_mode;
#ifdef MODE_STATS
const int is_key = cpi->common.frame_type == KEY_FRAME;
++ (is_key ? uv_modes : inter_uv_modes)[uvm];
if (m == B_PRED)
{
unsigned int *const bct = is_key ? b_modes : inter_b_modes;
int b = 0;
do
{
++ bct[xd->block[b].bmi.mode];
}
while (++b < 16);
}
#endif
++cpi->ymode_count[m];
++cpi->uv_mode_count[uvm];
}
// Experimental stub function to create a per MB zbin adjustment based on
// some previously calculated measure of MB activity.
static void adjust_act_zbin( VP8_COMP *cpi, MACROBLOCK *x )
{
#if USE_ACT_INDEX
x->act_zbin_adj = *(x->mb_activity_ptr);
#else
INT64 a;
INT64 b;
INT64 act = *(x->mb_activity_ptr);
// Apply the masking to the RD multiplier.
a = act + 4*cpi->activity_avg;
b = 4*act + cpi->activity_avg;
if ( act > cpi->activity_avg )
x->act_zbin_adj = (int)(((INT64)b + (a>>1))/a) - 1;
else
x->act_zbin_adj = 1 - (int)(((INT64)a + (b>>1))/b);
#endif
}
int vp8cx_encode_intra_macro_block(VP8_COMP *cpi, MACROBLOCK *x, TOKENEXTRA **t)
{
int rate;
if (cpi->sf.RD && cpi->compressor_speed != 2)
vp8_rd_pick_intra_mode(cpi, x, &rate);
else
vp8_pick_intra_mode(cpi, x, &rate);
if(cpi->oxcf.tuning == VP8_TUNE_SSIM)
{
adjust_act_zbin( cpi, x );
vp8_update_zbin_extra(cpi, x);
}
if (x->e_mbd.mode_info_context->mbmi.mode == B_PRED)
vp8_encode_intra4x4mby(IF_RTCD(&cpi->rtcd), x);
else
vp8_encode_intra16x16mby(IF_RTCD(&cpi->rtcd), x);
vp8_encode_intra16x16mbuv(IF_RTCD(&cpi->rtcd), x);
sum_intra_stats(cpi, x);
vp8_tokenize_mb(cpi, &x->e_mbd, t);
return rate;
}
#ifdef SPEEDSTATS
extern int cnt_pm;
#endif
extern void vp8_fix_contexts(MACROBLOCKD *x);
int vp8cx_encode_inter_macroblock
(
VP8_COMP *cpi, MACROBLOCK *x, TOKENEXTRA **t,
int recon_yoffset, int recon_uvoffset
)
{
MACROBLOCKD *const xd = &x->e_mbd;
int intra_error = 0;
int rate;
int distortion;
x->skip = 0;
if (xd->segmentation_enabled)
x->encode_breakout = cpi->segment_encode_breakout[xd->mode_info_context->mbmi.segment_id];
else
x->encode_breakout = cpi->oxcf.encode_breakout;
if (cpi->sf.RD)
{
int zbin_mode_boost_enabled = cpi->zbin_mode_boost_enabled;
/* Are we using the fast quantizer for the mode selection? */
if(cpi->sf.use_fastquant_for_pick)
{
cpi->mb.quantize_b = QUANTIZE_INVOKE(&cpi->rtcd.quantize,
fastquantb);
cpi->mb.quantize_b_pair = QUANTIZE_INVOKE(&cpi->rtcd.quantize,
fastquantb_pair);
/* the fast quantizer does not use zbin_extra, so
* do not recalculate */
cpi->zbin_mode_boost_enabled = 0;
}
vp8_rd_pick_inter_mode(cpi, x, recon_yoffset, recon_uvoffset, &rate,
&distortion, &intra_error);
/* switch back to the regular quantizer for the encode */
if (cpi->sf.improved_quant)
{
cpi->mb.quantize_b = QUANTIZE_INVOKE(&cpi->rtcd.quantize,
quantb);
cpi->mb.quantize_b_pair = QUANTIZE_INVOKE(&cpi->rtcd.quantize,
quantb_pair);
}
/* restore cpi->zbin_mode_boost_enabled */
cpi->zbin_mode_boost_enabled = zbin_mode_boost_enabled;
}
else
vp8_pick_inter_mode(cpi, x, recon_yoffset, recon_uvoffset, &rate,
&distortion, &intra_error);
cpi->prediction_error += distortion;
cpi->intra_error += intra_error;
if(cpi->oxcf.tuning == VP8_TUNE_SSIM)
{
// Adjust the zbin based on this MB rate.
adjust_act_zbin( cpi, x );
}
#if 0
// Experimental RD code
cpi->frame_distortion += distortion;
cpi->last_mb_distortion = distortion;
#endif
// MB level adjutment to quantizer setup
if (xd->segmentation_enabled)
{
// If cyclic update enabled
if (cpi->cyclic_refresh_mode_enabled)
{
// Clear segment_id back to 0 if not coded (last frame 0,0)
if ((xd->mode_info_context->mbmi.segment_id == 1) &&
((xd->mode_info_context->mbmi.ref_frame != LAST_FRAME) || (xd->mode_info_context->mbmi.mode != ZEROMV)))
{
xd->mode_info_context->mbmi.segment_id = 0;
/* segment_id changed, so update */
vp8cx_mb_init_quantizer(cpi, x);
}
}
}
{
// Experimental code. Special case for gf and arf zeromv modes.
// Increase zbin size to supress noise
cpi->zbin_mode_boost = 0;
if (cpi->zbin_mode_boost_enabled)
{
if ( xd->mode_info_context->mbmi.ref_frame != INTRA_FRAME )
{
if (xd->mode_info_context->mbmi.mode == ZEROMV)
{
if (xd->mode_info_context->mbmi.ref_frame != LAST_FRAME)
cpi->zbin_mode_boost = GF_ZEROMV_ZBIN_BOOST;
else
cpi->zbin_mode_boost = LF_ZEROMV_ZBIN_BOOST;
}
else if (xd->mode_info_context->mbmi.mode == SPLITMV)
cpi->zbin_mode_boost = 0;
else
cpi->zbin_mode_boost = MV_ZBIN_BOOST;
}
}
vp8_update_zbin_extra(cpi, x);
}
cpi->count_mb_ref_frame_usage[xd->mode_info_context->mbmi.ref_frame] ++;
if (xd->mode_info_context->mbmi.ref_frame == INTRA_FRAME)
{
vp8_encode_intra16x16mbuv(IF_RTCD(&cpi->rtcd), x);
if (xd->mode_info_context->mbmi.mode == B_PRED)
{
vp8_encode_intra4x4mby(IF_RTCD(&cpi->rtcd), x);
}
else
{
vp8_encode_intra16x16mby(IF_RTCD(&cpi->rtcd), x);
}
sum_intra_stats(cpi, x);
}
else
{
int ref_fb_idx;
vp8_build_uvmvs(xd, cpi->common.full_pixel);
if (xd->mode_info_context->mbmi.ref_frame == LAST_FRAME)
ref_fb_idx = cpi->common.lst_fb_idx;
else if (xd->mode_info_context->mbmi.ref_frame == GOLDEN_FRAME)
ref_fb_idx = cpi->common.gld_fb_idx;
else
ref_fb_idx = cpi->common.alt_fb_idx;
xd->pre.y_buffer = cpi->common.yv12_fb[ref_fb_idx].y_buffer + recon_yoffset;
xd->pre.u_buffer = cpi->common.yv12_fb[ref_fb_idx].u_buffer + recon_uvoffset;
xd->pre.v_buffer = cpi->common.yv12_fb[ref_fb_idx].v_buffer + recon_uvoffset;
if (!x->skip)
{
vp8_encode_inter16x16(IF_RTCD(&cpi->rtcd), x);
// Clear mb_skip_coeff if mb_no_coeff_skip is not set
if (!cpi->common.mb_no_coeff_skip)
xd->mode_info_context->mbmi.mb_skip_coeff = 0;
}
else
vp8_build_inter16x16_predictors_mb(xd, xd->dst.y_buffer,
xd->dst.u_buffer, xd->dst.v_buffer,
xd->dst.y_stride, xd->dst.uv_stride);
}
if (!x->skip)
vp8_tokenize_mb(cpi, xd, t);
else
{
if (cpi->common.mb_no_coeff_skip)
{
xd->mode_info_context->mbmi.mb_skip_coeff = 1;
cpi->skip_true_count ++;
vp8_fix_contexts(xd);
}
else
{
vp8_stuff_mb(cpi, xd, t);
xd->mode_info_context->mbmi.mb_skip_coeff = 0;
cpi->skip_false_count ++;
}
}
return rate;
}
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