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vpx/vp9/encoder/vp9_encodeframe.c
Scott LaVarnway 1db6373267 Merge "WIP: 4x4 idct/recon merge" into experimental
2013-05-21 10:45:53 -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_config.h"
#include "vp9/encoder/vp9_encodeframe.h"
#include "vp9/encoder/vp9_encodemb.h"
#include "vp9/encoder/vp9_encodemv.h"
#include "vp9/common/vp9_common.h"
#include "vp9/encoder/vp9_onyx_int.h"
#include "vp9/common/vp9_extend.h"
#include "vp9/common/vp9_entropy.h"
#include "vp9/common/vp9_entropymode.h"
#include "vp9/common/vp9_quant_common.h"
#include "vp9/encoder/vp9_segmentation.h"
#include "vp9/encoder/vp9_encodeintra.h"
#include "vp9/common/vp9_reconinter.h"
#include "vp9/common/vp9_invtrans.h"
#include "vp9/encoder/vp9_rdopt.h"
#include "vp9/common/vp9_findnearmv.h"
#include "vp9/common/vp9_reconintra.h"
#include "vp9/common/vp9_seg_common.h"
#include "vp9/common/vp9_tile_common.h"
#include "vp9/encoder/vp9_tokenize.h"
#include "./vp9_rtcd.h"
#include <stdio.h>
#include <math.h>
#include <limits.h>
#include "vpx_ports/vpx_timer.h"
#include "vp9/common/vp9_pred_common.h"
#include "vp9/common/vp9_mvref_common.h"
#define DBG_PRNT_SEGMAP 0
// #define ENC_DEBUG
#ifdef ENC_DEBUG
int enc_debug = 0;
#endif
void vp9_select_interp_filter_type(VP9_COMP *cpi);
static void encode_superblock(VP9_COMP *cpi, TOKENEXTRA **t,
int output_enabled, int mi_row, int mi_col,
BLOCK_SIZE_TYPE bsize);
static void adjust_act_zbin(VP9_COMP *cpi, MACROBLOCK *x);
/* 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
* vp9_activity_masking().
*/
#define VP9_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 uint8_t VP9_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(VP9_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 = vp9_variance16x16(x->plane[0].src.buf, x->plane[0].src.stride,
VP9_VAR_OFFS, 0, &sse);
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(VP9_COMP *cpi,
MACROBLOCK *x, int use_dc_pred) {
return vp9_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(VP9_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 < VP9_ACTIVITY_AVG_MIN)
mb_activity = VP9_ACTIVITY_AVG_MIN;
return mb_activity;
}
// Calculate an "average" mb activity value for the frame
#define ACT_MEDIAN 0
static void calc_av_activity(VP9_COMP *cpi, int64_t 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 < VP9_ACTIVITY_AVG_MIN)
cpi->activity_avg = VP9_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 an activity index for each mb
static void calc_activity_index(VP9_COMP *cpi, MACROBLOCK *x) {
VP9_COMMON *const cm = &cpi->common;
int mb_row, mb_col;
int64_t act;
int64_t a;
int64_t 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(VP9_COMP *cpi) {
MACROBLOCK *const x = &cpi->mb;
MACROBLOCKD *xd = &x->e_mbd;
VP9_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_t activity_sum = 0;
x->mb_activity_ptr = cpi->mb_activity_map;
// 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->plane[0].dst.buf = 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->plane[0].src.buf += 16;
}
// adjust to the next row of mbs
x->plane[0].src.buf += 16 * x->plane[0].src.stride - 16 * cm->mb_cols;
}
// 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 vp9_activity_masking(VP9_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_t a;
int64_t b;
int64_t 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_t)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 update_state(VP9_COMP *cpi,
PICK_MODE_CONTEXT *ctx,
BLOCK_SIZE_TYPE bsize,
int output_enabled) {
int i, x_idx, y;
VP9_COMMON *const cm = &cpi->common;
MACROBLOCK *const x = &cpi->mb;
MACROBLOCKD *const xd = &x->e_mbd;
MODE_INFO *mi = &ctx->mic;
MB_MODE_INFO *const mbmi = &xd->mode_info_context->mbmi;
int mb_mode = mi->mbmi.mode;
int mb_mode_index = ctx->best_mode_index;
const int mis = cpi->common.mode_info_stride;
const int bh = 1 << mi_height_log2(bsize), bw = 1 << mi_width_log2(bsize);
#if CONFIG_DEBUG
assert(mb_mode < MB_MODE_COUNT);
assert(mb_mode_index < MAX_MODES);
assert(mi->mbmi.ref_frame < MAX_REF_FRAMES);
#endif
assert(mi->mbmi.sb_type == bsize);
// Restore the coding context of the MB to that that was in place
// when the mode was picked for it
for (y = 0; y < bh; y++) {
for (x_idx = 0; x_idx < bw; x_idx++) {
if ((xd->mb_to_right_edge >> (3 + LOG2_MI_SIZE)) + bw > x_idx &&
(xd->mb_to_bottom_edge >> (3 + LOG2_MI_SIZE)) + bh > y) {
MODE_INFO *mi_addr = xd->mode_info_context + x_idx + y * mis;
vpx_memcpy(mi_addr, mi, sizeof(MODE_INFO));
}
}
}
if (bsize < BLOCK_SIZE_SB32X32) {
if (bsize < BLOCK_SIZE_MB16X16)
ctx->txfm_rd_diff[ALLOW_16X16] = ctx->txfm_rd_diff[ALLOW_8X8];
ctx->txfm_rd_diff[ALLOW_32X32] = ctx->txfm_rd_diff[ALLOW_16X16];
}
if (mb_mode == SPLITMV) {
vpx_memcpy(x->partition_info, &ctx->partition_info,
sizeof(PARTITION_INFO));
mbmi->mv[0].as_int =
x->partition_info->bmi[3].mv.as_int;
mbmi->mv[1].as_int =
x->partition_info->bmi[3].second_mv.as_int;
}
x->skip = ctx->skip;
if (!output_enabled)
return;
{
int segment_id = mbmi->segment_id, ref_pred_flag;
if (!vp9_segfeature_active(xd, segment_id, SEG_LVL_SKIP)) {
for (i = 0; i < NB_TXFM_MODES; i++) {
cpi->rd_tx_select_diff[i] += ctx->txfm_rd_diff[i];
}
}
// Did the chosen reference frame match its predicted value.
ref_pred_flag = ((xd->mode_info_context->mbmi.ref_frame ==
vp9_get_pred_ref(cm, xd)));
vp9_set_pred_flag(xd, PRED_REF, ref_pred_flag);
if (!xd->segmentation_enabled ||
!vp9_segfeature_active(xd, segment_id, SEG_LVL_REF_FRAME) ||
vp9_check_segref(xd, segment_id, INTRA_FRAME) +
vp9_check_segref(xd, segment_id, LAST_FRAME) +
vp9_check_segref(xd, segment_id, GOLDEN_FRAME) +
vp9_check_segref(xd, segment_id, ALTREF_FRAME) > 1) {
// Get the prediction context and status
int pred_context = vp9_get_pred_context(cm, xd, PRED_REF);
// Count prediction success
cpi->ref_pred_count[pred_context][ref_pred_flag]++;
}
}
if (cpi->common.frame_type == KEY_FRAME) {
// Restore the coding modes to that held in the coding context
// if (mb_mode == I4X4_PRED)
// for (i = 0; i < 16; i++)
// {
// xd->block[i].bmi.as_mode =
// xd->mode_info_context->bmi[i].as_mode;
// assert(xd->mode_info_context->bmi[i].as_mode < MB_MODE_COUNT);
// }
#if CONFIG_INTERNAL_STATS
static const int kf_mode_index[] = {
THR_DC /*DC_PRED*/,
THR_V_PRED /*V_PRED*/,
THR_H_PRED /*H_PRED*/,
THR_D45_PRED /*D45_PRED*/,
THR_D135_PRED /*D135_PRED*/,
THR_D117_PRED /*D117_PRED*/,
THR_D153_PRED /*D153_PRED*/,
THR_D27_PRED /*D27_PRED*/,
THR_D63_PRED /*D63_PRED*/,
THR_TM /*TM_PRED*/,
THR_B_PRED /*I4X4_PRED*/,
};
cpi->mode_chosen_counts[kf_mode_index[mb_mode]]++;
#endif
} else {
/*
// Reduce the activation RD thresholds for the best choice mode
if ((cpi->rd_baseline_thresh[mb_mode_index] > 0) &&
(cpi->rd_baseline_thresh[mb_mode_index] < (INT_MAX >> 2)))
{
int best_adjustment = (cpi->rd_thresh_mult[mb_mode_index] >> 2);
cpi->rd_thresh_mult[mb_mode_index] =
(cpi->rd_thresh_mult[mb_mode_index]
>= (MIN_THRESHMULT + best_adjustment)) ?
cpi->rd_thresh_mult[mb_mode_index] - best_adjustment :
MIN_THRESHMULT;
cpi->rd_threshes[mb_mode_index] =
(cpi->rd_baseline_thresh[mb_mode_index] >> 7)
* cpi->rd_thresh_mult[mb_mode_index];
}
*/
// Note how often each mode chosen as best
cpi->mode_chosen_counts[mb_mode_index]++;
if (mbmi->mode == SPLITMV || mbmi->mode == NEWMV) {
int_mv best_mv, best_second_mv;
MV_REFERENCE_FRAME rf = mbmi->ref_frame;
best_mv.as_int = ctx->best_ref_mv.as_int;
best_second_mv.as_int = ctx->second_best_ref_mv.as_int;
if (mbmi->mode == NEWMV) {
best_mv.as_int = mbmi->ref_mvs[rf][0].as_int;
best_second_mv.as_int = mbmi->ref_mvs[mbmi->second_ref_frame][0].as_int;
}
mbmi->best_mv.as_int = best_mv.as_int;
mbmi->best_second_mv.as_int = best_second_mv.as_int;
vp9_update_nmv_count(cpi, x, &best_mv, &best_second_mv);
}
if (bsize > BLOCK_SIZE_SB8X8 && mbmi->mode == NEWMV) {
int i, j;
for (j = 0; j < bh; ++j)
for (i = 0; i < bw; ++i)
xd->mode_info_context[mis * j + i].mbmi = *mbmi;
}
if (cpi->common.mcomp_filter_type == SWITCHABLE &&
is_inter_mode(mbmi->mode)) {
++cpi->switchable_interp_count
[vp9_get_pred_context(&cpi->common, xd, PRED_SWITCHABLE_INTERP)]
[vp9_switchable_interp_map[mbmi->interp_filter]];
}
cpi->rd_comp_pred_diff[SINGLE_PREDICTION_ONLY] += ctx->single_pred_diff;
cpi->rd_comp_pred_diff[COMP_PREDICTION_ONLY] += ctx->comp_pred_diff;
cpi->rd_comp_pred_diff[HYBRID_PREDICTION] += ctx->hybrid_pred_diff;
}
}
static unsigned find_seg_id(uint8_t *buf, BLOCK_SIZE_TYPE bsize,
int start_y, int height, int start_x, int width) {
const int bw = 1 << mi_width_log2(bsize), bh = 1 << mi_height_log2(bsize);
const int end_x = MIN(start_x + bw, width);
const int end_y = MIN(start_y + bh, height);
int x, y;
unsigned seg_id = -1;
buf += width * start_y;
for (y = start_y; y < end_y; y++, buf += width) {
for (x = start_x; x < end_x; x++) {
seg_id = MIN(seg_id, buf[x]);
}
}
return seg_id;
}
void vp9_setup_src_planes(MACROBLOCK *x,
const YV12_BUFFER_CONFIG *src,
int mb_row, int mb_col) {
setup_pred_plane(&x->plane[0].src,
src->y_buffer, src->y_stride,
mb_row, mb_col, NULL,
x->e_mbd.plane[0].subsampling_x,
x->e_mbd.plane[0].subsampling_y);
setup_pred_plane(&x->plane[1].src,
src->u_buffer, src->uv_stride,
mb_row, mb_col, NULL,
x->e_mbd.plane[1].subsampling_x,
x->e_mbd.plane[1].subsampling_y);
setup_pred_plane(&x->plane[2].src,
src->v_buffer, src->uv_stride,
mb_row, mb_col, NULL,
x->e_mbd.plane[2].subsampling_x,
x->e_mbd.plane[2].subsampling_y);
}
static void set_offsets(VP9_COMP *cpi,
int mi_row, int mi_col, BLOCK_SIZE_TYPE bsize) {
MACROBLOCK *const x = &cpi->mb;
VP9_COMMON *const cm = &cpi->common;
MACROBLOCKD *const xd = &x->e_mbd;
MB_MODE_INFO *mbmi;
const int dst_fb_idx = cm->new_fb_idx;
const int idx_str = xd->mode_info_stride * mi_row + mi_col;
const int bw = 1 << mi_width_log2(bsize), bh = 1 << mi_height_log2(bsize);
const int mb_row = mi_row >> 1;
const int mb_col = mi_col >> 1;
const int idx_map = mb_row * cm->mb_cols + mb_col;
int i;
// entropy context structures
for (i = 0; i < MAX_MB_PLANE; i++) {
xd->plane[i].above_context = cm->above_context[i] +
(mi_col * 2 >> xd->plane[i].subsampling_x);
xd->plane[i].left_context = cm->left_context[i] +
(((mi_row * 2) & 15) >> xd->plane[i].subsampling_y);
}
// partition contexts
set_partition_seg_context(cm, xd, mi_row, mi_col);
// Activity map pointer
x->mb_activity_ptr = &cpi->mb_activity_map[idx_map];
x->active_ptr = cpi->active_map + idx_map;
/* pointers to mode info contexts */
x->partition_info = x->pi + idx_str;
xd->mode_info_context = cm->mi + idx_str;
mbmi = &xd->mode_info_context->mbmi;
xd->prev_mode_info_context = cm->prev_mi + idx_str;
// Set up destination pointers
setup_dst_planes(xd, &cm->yv12_fb[dst_fb_idx], mi_row, mi_col);
/* Set up limit values for MV components to prevent them from
* extending beyond the UMV borders assuming 16x16 block size */
x->mv_row_min = -((mi_row * MI_SIZE) + VP9BORDERINPIXELS - VP9_INTERP_EXTEND);
x->mv_col_min = -((mi_col * MI_SIZE) + VP9BORDERINPIXELS - VP9_INTERP_EXTEND);
x->mv_row_max = ((cm->mi_rows - mi_row) * MI_SIZE +
(VP9BORDERINPIXELS - MI_SIZE * bh - VP9_INTERP_EXTEND));
x->mv_col_max = ((cm->mi_cols - mi_col) * MI_SIZE +
(VP9BORDERINPIXELS - MI_SIZE * bw - VP9_INTERP_EXTEND));
// Set up distance of MB to edge of frame in 1/8th pel units
assert(!(mi_col & (bw - 1)) && !(mi_row & (bh - 1)));
set_mi_row_col(cm, xd, mi_row, bh, mi_col, bw);
/* set up source buffers */
vp9_setup_src_planes(x, cpi->Source, mi_row, mi_col);
/* R/D setup */
x->rddiv = cpi->RDDIV;
x->rdmult = cpi->RDMULT;
/* segment ID */
if (xd->segmentation_enabled) {
uint8_t *map = xd->update_mb_segmentation_map ? cpi->segmentation_map
: cm->last_frame_seg_map;
mbmi->segment_id = find_seg_id(map, bsize, mi_row,
cm->mi_rows, mi_col, cm->mi_cols);
assert(mbmi->segment_id <= (MAX_MB_SEGMENTS-1));
vp9_mb_init_quantizer(cpi, x);
if (xd->segmentation_enabled && cpi->seg0_cnt > 0 &&
!vp9_segfeature_active(xd, 0, SEG_LVL_REF_FRAME) &&
vp9_segfeature_active(xd, 1, SEG_LVL_REF_FRAME) &&
vp9_check_segref(xd, 1, INTRA_FRAME) +
vp9_check_segref(xd, 1, LAST_FRAME) +
vp9_check_segref(xd, 1, GOLDEN_FRAME) +
vp9_check_segref(xd, 1, ALTREF_FRAME) == 1) {
cpi->seg0_progress = (cpi->seg0_idx << 16) / cpi->seg0_cnt;
} else {
const int y = mb_row & ~3;
const int x = mb_col & ~3;
const int p16 = ((mb_row & 1) << 1) + (mb_col & 1);
const int p32 = ((mb_row & 2) << 2) + ((mb_col & 2) << 1);
const int tile_progress =
cm->cur_tile_mi_col_start * cm->mb_rows >> 1;
const int mb_cols =
(cm->cur_tile_mi_col_end - cm->cur_tile_mi_col_start) >> 1;
cpi->seg0_progress =
((y * mb_cols + x * 4 + p32 + p16 + tile_progress) << 16) / cm->MBs;
}
} else {
mbmi->segment_id = 0;
}
}
static void pick_sb_modes(VP9_COMP *cpi, int mi_row, int mi_col,
TOKENEXTRA **tp, int *totalrate, int *totaldist,
BLOCK_SIZE_TYPE bsize, PICK_MODE_CONTEXT *ctx) {
VP9_COMMON *const cm = &cpi->common;
MACROBLOCK *const x = &cpi->mb;
MACROBLOCKD *const xd = &x->e_mbd;
#if CONFIG_AB4X4
if (bsize < BLOCK_SIZE_SB8X8)
if (xd->ab_index != 0)
return;
#endif
set_offsets(cpi, mi_row, mi_col, bsize);
xd->mode_info_context->mbmi.sb_type = bsize;
if (cpi->oxcf.tuning == VP8_TUNE_SSIM)
vp9_activity_masking(cpi, x);
/* Find best coding mode & reconstruct the MB so it is available
* as a predictor for MBs that follow in the SB */
if (cm->frame_type == KEY_FRAME) {
vp9_rd_pick_intra_mode_sb(cpi, x, totalrate, totaldist, bsize, ctx);
} else {
vp9_rd_pick_inter_mode_sb(cpi, x, mi_row, mi_col, totalrate, totaldist,
bsize, ctx);
}
}
static void update_stats(VP9_COMP *cpi, int mi_row, int mi_col) {
VP9_COMMON *const cm = &cpi->common;
MACROBLOCK *const x = &cpi->mb;
MACROBLOCKD *const xd = &x->e_mbd;
MODE_INFO *mi = xd->mode_info_context;
MB_MODE_INFO *const mbmi = &mi->mbmi;
if (cm->frame_type != KEY_FRAME) {
int segment_id, seg_ref_active;
if (mbmi->ref_frame) {
int pred_context = vp9_get_pred_context(cm, xd, PRED_COMP);
if (mbmi->second_ref_frame <= INTRA_FRAME)
cpi->single_pred_count[pred_context]++;
else
cpi->comp_pred_count[pred_context]++;
}
// If we have just a single reference frame coded for a segment then
// exclude from the reference frame counts used to work out
// probabilities. NOTE: At the moment we dont support custom trees
// for the reference frame coding for each segment but this is a
// possible future action.
segment_id = mbmi->segment_id;
seg_ref_active = vp9_segfeature_active(xd, segment_id,
SEG_LVL_REF_FRAME);
if (!seg_ref_active ||
((vp9_check_segref(xd, segment_id, INTRA_FRAME) +
vp9_check_segref(xd, segment_id, LAST_FRAME) +
vp9_check_segref(xd, segment_id, GOLDEN_FRAME) +
vp9_check_segref(xd, segment_id, ALTREF_FRAME)) > 1)) {
cpi->count_mb_ref_frame_usage[mbmi->ref_frame]++;
}
// Count of last ref frame 0,0 usage
if ((mbmi->mode == ZEROMV) && (mbmi->ref_frame == LAST_FRAME))
cpi->inter_zz_count++;
}
}
// TODO(jingning): the variables used here are little complicated. need further
// refactoring on organizing the the temporary buffers, when recursive
// partition down to 4x4 block size is enabled.
static PICK_MODE_CONTEXT *get_block_context(MACROBLOCK *x,
BLOCK_SIZE_TYPE bsize) {
MACROBLOCKD *const xd = &x->e_mbd;
switch (bsize) {
case BLOCK_SIZE_SB64X64:
return &x->sb64_context;
case BLOCK_SIZE_SB64X32:
return &x->sb64x32_context[xd->sb_index];
case BLOCK_SIZE_SB32X64:
return &x->sb32x64_context[xd->sb_index];
case BLOCK_SIZE_SB32X32:
return &x->sb32_context[xd->sb_index];
case BLOCK_SIZE_SB32X16:
return &x->sb32x16_context[xd->sb_index][xd->mb_index];
case BLOCK_SIZE_SB16X32:
return &x->sb16x32_context[xd->sb_index][xd->mb_index];
case BLOCK_SIZE_MB16X16:
return &x->mb_context[xd->sb_index][xd->mb_index];
case BLOCK_SIZE_SB16X8:
return &x->sb16x8_context[xd->sb_index][xd->mb_index][xd->b_index];
case BLOCK_SIZE_SB8X16:
return &x->sb8x16_context[xd->sb_index][xd->mb_index][xd->b_index];
case BLOCK_SIZE_SB8X8:
return &x->sb8x8_context[xd->sb_index][xd->mb_index][xd->b_index];
#if CONFIG_AB4X4
case BLOCK_SIZE_SB8X4:
return &x->sb8x4_context[xd->sb_index][xd->mb_index][xd->b_index];
case BLOCK_SIZE_SB4X8:
return &x->sb4x8_context[xd->sb_index][xd->mb_index][xd->b_index];
case BLOCK_SIZE_AB4X4:
return &x->ab4x4_context[xd->sb_index][xd->mb_index][xd->b_index];
#endif
default:
assert(0);
return NULL;
}
}
static BLOCK_SIZE_TYPE *get_sb_partitioning(MACROBLOCK *x,
BLOCK_SIZE_TYPE bsize) {
MACROBLOCKD *xd = &x->e_mbd;
switch (bsize) {
case BLOCK_SIZE_SB64X64:
return &x->sb64_partitioning;
case BLOCK_SIZE_SB32X32:
return &x->sb_partitioning[xd->sb_index];
case BLOCK_SIZE_MB16X16:
return &x->mb_partitioning[xd->sb_index][xd->mb_index];
#if CONFIG_AB4X4
case BLOCK_SIZE_SB8X8:
return &x->b_partitioning[xd->sb_index][xd->mb_index][xd->b_index];
#endif
default:
assert(0);
return NULL;
}
}
static void restore_context(VP9_COMP *cpi, int mi_row, int mi_col,
ENTROPY_CONTEXT a[16 * MAX_MB_PLANE],
ENTROPY_CONTEXT l[16 * MAX_MB_PLANE],
PARTITION_CONTEXT sa[8],
PARTITION_CONTEXT sl[8],
BLOCK_SIZE_TYPE bsize) {
VP9_COMMON *const cm = &cpi->common;
MACROBLOCK *const x = &cpi->mb;
MACROBLOCKD *const xd = &x->e_mbd;
int p;
int bwl = b_width_log2(bsize), bw = 1 << bwl;
int bhl = b_height_log2(bsize), bh = 1 << bhl;
int mwl = mi_width_log2(bsize), mw = 1 << mwl;
int mhl = mi_height_log2(bsize), mh = 1 << mhl;
for (p = 0; p < MAX_MB_PLANE; p++) {
vpx_memcpy(cm->above_context[p] +
((mi_col * 2) >> xd->plane[p].subsampling_x),
a + bw * p,
sizeof(ENTROPY_CONTEXT) * bw >> xd->plane[p].subsampling_x);
vpx_memcpy(cm->left_context[p] +
((mi_row & MI_MASK) * 2 >> xd->plane[p].subsampling_y),
l + bh * p,
sizeof(ENTROPY_CONTEXT) * bh >> xd->plane[p].subsampling_y);
}
vpx_memcpy(cm->above_seg_context + mi_col, sa,
sizeof(PARTITION_CONTEXT) * mw);
vpx_memcpy(cm->left_seg_context + (mi_row & MI_MASK), sl,
sizeof(PARTITION_CONTEXT) * mh);
}
static void encode_b(VP9_COMP *cpi, TOKENEXTRA **tp,
int mi_row, int mi_col, int output_enabled,
BLOCK_SIZE_TYPE bsize, int sub_index) {
VP9_COMMON *const cm = &cpi->common;
MACROBLOCK *const x = &cpi->mb;
MACROBLOCKD *const xd = &x->e_mbd;
if (mi_row >= cm->mi_rows || mi_col >= cm->mi_cols)
return;
if (sub_index != -1)
*(get_sb_index(xd, bsize)) = sub_index;
#if CONFIG_AB4X4
if (bsize < BLOCK_SIZE_SB8X8)
if (xd->ab_index > 0)
return;
#endif
set_offsets(cpi, mi_row, mi_col, bsize);
update_state(cpi, get_block_context(x, bsize), bsize, output_enabled);
encode_superblock(cpi, tp, output_enabled, mi_row, mi_col, bsize);
if (output_enabled) {
update_stats(cpi, mi_row, mi_col);
(*tp)->token = EOSB_TOKEN;
(*tp)++;
}
}
static void encode_sb(VP9_COMP *cpi, TOKENEXTRA **tp,
int mi_row, int mi_col, int output_enabled,
BLOCK_SIZE_TYPE bsize) {
VP9_COMMON *const cm = &cpi->common;
MACROBLOCK *const x = &cpi->mb;
MACROBLOCKD *const xd = &x->e_mbd;
BLOCK_SIZE_TYPE c1 = BLOCK_SIZE_SB8X8;
const int bsl = b_width_log2(bsize), bs = (1 << bsl) / 4;
int bwl, bhl;
int UNINITIALIZED_IS_SAFE(pl);
if (mi_row >= cm->mi_rows || mi_col >= cm->mi_cols)
return;
#if CONFIG_AB4X4
c1 = BLOCK_SIZE_AB4X4;
if (bsize >= BLOCK_SIZE_SB8X8)
#else
if (bsize > BLOCK_SIZE_SB8X8)
#endif
{
set_partition_seg_context(cm, xd, mi_row, mi_col);
pl = partition_plane_context(xd, bsize);
c1 = *(get_sb_partitioning(x, bsize));
}
bwl = b_width_log2(c1), bhl = b_height_log2(c1);
if (bsl == bwl && bsl == bhl) {
#if CONFIG_AB4X4
if (output_enabled && bsize >= BLOCK_SIZE_SB8X8)
cpi->partition_count[pl][PARTITION_NONE]++;
#else
if (output_enabled && bsize > BLOCK_SIZE_SB8X8)
cpi->partition_count[pl][PARTITION_NONE]++;
#endif
encode_b(cpi, tp, mi_row, mi_col, output_enabled, c1, -1);
} else if (bsl == bhl && bsl > bwl) {
if (output_enabled)
cpi->partition_count[pl][PARTITION_VERT]++;
encode_b(cpi, tp, mi_row, mi_col, output_enabled, c1, 0);
encode_b(cpi, tp, mi_row, mi_col + bs, output_enabled, c1, 1);
} else if (bsl == bwl && bsl > bhl) {
if (output_enabled)
cpi->partition_count[pl][PARTITION_HORZ]++;
encode_b(cpi, tp, mi_row, mi_col, output_enabled, c1, 0);
encode_b(cpi, tp, mi_row + bs, mi_col, output_enabled, c1, 1);
} else {
BLOCK_SIZE_TYPE subsize;
int i;
assert(bwl < bsl && bhl < bsl);
subsize = get_subsize(bsize, PARTITION_SPLIT);
if (output_enabled)
cpi->partition_count[pl][PARTITION_SPLIT]++;
for (i = 0; i < 4; i++) {
const int x_idx = i & 1, y_idx = i >> 1;
*(get_sb_index(xd, subsize)) = i;
encode_sb(cpi, tp, mi_row + y_idx * bs, mi_col + x_idx * bs,
output_enabled, subsize);
}
}
#if CONFIG_AB4X4
if (bsize >= BLOCK_SIZE_SB8X8 &&
(bsize == BLOCK_SIZE_SB8X8 || bsl == bwl || bsl == bhl)) {
#else
if (bsize > BLOCK_SIZE_SB8X8 &&
(bsize == BLOCK_SIZE_MB16X16 || bsl == bwl || bsl == bhl)) {
#endif
set_partition_seg_context(cm, xd, mi_row, mi_col);
update_partition_context(xd, c1, bsize);
}
}
// TODO(jingning,jimbankoski,rbultje): properly skip partition types that are
// unlikely to be selected depending on previously rate-distortion optimization
// results, for encoding speed-up.
static void rd_pick_partition(VP9_COMP *cpi, TOKENEXTRA **tp,
int mi_row, int mi_col,
BLOCK_SIZE_TYPE bsize,
int *rate, int *dist) {
VP9_COMMON *const cm = &cpi->common;
MACROBLOCK *const x = &cpi->mb;
MACROBLOCKD *const xd = &x->e_mbd;
int bsl = b_width_log2(bsize), bs = 1 << bsl;
int ms = bs / 2;
ENTROPY_CONTEXT l[16 * MAX_MB_PLANE], a[16 * MAX_MB_PLANE];
PARTITION_CONTEXT sl[8], sa[8];
TOKENEXTRA *tp_orig = *tp;
int i, p, pl;
BLOCK_SIZE_TYPE subsize;
int srate = INT_MAX, sdist = INT_MAX;
#if CONFIG_AB4X4
if (bsize < BLOCK_SIZE_SB8X8)
if (xd->ab_index != 0) {
*rate = 0;
*dist = 0;
return;
}
#endif
assert(mi_height_log2(bsize) == mi_width_log2(bsize));
// buffer the above/left context information of the block in search.
for (p = 0; p < MAX_MB_PLANE; ++p) {
vpx_memcpy(a + bs * p, cm->above_context[p] +
(mi_col * 2 >> xd->plane[p].subsampling_x),
sizeof(ENTROPY_CONTEXT) * bs >> xd->plane[p].subsampling_x);
vpx_memcpy(l + bs * p, cm->left_context[p] +
((mi_row & MI_MASK) * 2 >> xd->plane[p].subsampling_y),
sizeof(ENTROPY_CONTEXT) * bs >> xd->plane[p].subsampling_y);
}
vpx_memcpy(sa, cm->above_seg_context + mi_col,
sizeof(PARTITION_CONTEXT) * ms);
vpx_memcpy(sl, cm->left_seg_context + (mi_row & MI_MASK),
sizeof(PARTITION_CONTEXT) * ms);
// PARTITION_SPLIT
#if CONFIG_AB4X4
if (bsize >= BLOCK_SIZE_SB8X8) {
#else
if (bsize >= BLOCK_SIZE_MB16X16) {
#endif
int r4 = 0, d4 = 0;
subsize = get_subsize(bsize, PARTITION_SPLIT);
*(get_sb_partitioning(x, bsize)) = subsize;
for (i = 0; i < 4; ++i) {
int x_idx = (i & 1) * (ms >> 1);
int y_idx = (i >> 1) * (ms >> 1);
int r = 0, d = 0;
if ((mi_row + y_idx >= cm->mi_rows) || (mi_col + x_idx >= cm->mi_cols))
continue;
*(get_sb_index(xd, subsize)) = i;
rd_pick_partition(cpi, tp, mi_row + y_idx, mi_col + x_idx, subsize,
&r, &d);
r4 += r;
d4 += d;
}
set_partition_seg_context(cm, xd, mi_row, mi_col);
pl = partition_plane_context(xd, bsize);
#if CONFIG_AB4X4
if (r4 < INT_MAX)
r4 += x->partition_cost[pl][PARTITION_SPLIT];
#else
r4 += x->partition_cost[pl][PARTITION_SPLIT];
#endif
assert(r4 >= 0);
assert(d4 >= 0);
srate = r4;
sdist = d4;
restore_context(cpi, mi_row, mi_col, a, l, sa, sl, bsize);
}
// PARTITION_HORZ
if ((mi_col + ms <= cm->mi_cols) && (mi_row + (ms >> 1) <= cm->mi_rows) &&
#if CONFIG_AB4X4
(bsize >= BLOCK_SIZE_SB8X8)) {
#else
(bsize >= BLOCK_SIZE_MB16X16)) {
#endif
int r2, d2;
int mb_skip = 0;
subsize = get_subsize(bsize, PARTITION_HORZ);
*(get_sb_index(xd, subsize)) = 0;
pick_sb_modes(cpi, mi_row, mi_col, tp, &r2, &d2, subsize,
get_block_context(x, subsize));
if (mi_row + ms <= cm->mi_rows) {
int r = 0, d = 0;
update_state(cpi, get_block_context(x, subsize), subsize, 0);
encode_superblock(cpi, tp, 0, mi_row, mi_col, subsize);
*(get_sb_index(xd, subsize)) = 1;
pick_sb_modes(cpi, mi_row + (ms >> 1), mi_col, tp, &r, &d, subsize,
get_block_context(x, subsize));
r2 += r;
d2 += d;
} else {
if (mi_row + (ms >> 1) != cm->mi_rows)
mb_skip = 1;
}
set_partition_seg_context(cm, xd, mi_row, mi_col);
pl = partition_plane_context(xd, bsize);
#if CONFIG_AB4X4
if (r2 < INT_MAX)
r2 += x->partition_cost[pl][PARTITION_HORZ];
#else
r2 += x->partition_cost[pl][PARTITION_HORZ];
#endif
if ((RDCOST(x->rdmult, x->rddiv, r2, d2) <
RDCOST(x->rdmult, x->rddiv, srate, sdist)) && !mb_skip) {
srate = r2;
sdist = d2;
*(get_sb_partitioning(x, bsize)) = subsize;
}
restore_context(cpi, mi_row, mi_col, a, l, sa, sl, bsize);
}
// PARTITION_VERT
if ((mi_row + ms <= cm->mi_rows) && (mi_col + (ms >> 1) <= cm->mi_cols) &&
#if CONFIG_AB4X4
(bsize >= BLOCK_SIZE_SB8X8)) {
#else
(bsize >= BLOCK_SIZE_MB16X16)) {
#endif
int r2, d2;
int mb_skip = 0;
subsize = get_subsize(bsize, PARTITION_VERT);
*(get_sb_index(xd, subsize)) = 0;
pick_sb_modes(cpi, mi_row, mi_col, tp, &r2, &d2, subsize,
get_block_context(x, subsize));
if (mi_col + ms <= cm->mi_cols) {
int r = 0, d = 0;
update_state(cpi, get_block_context(x, subsize), subsize, 0);
encode_superblock(cpi, tp, 0, mi_row, mi_col, subsize);
*(get_sb_index(xd, subsize)) = 1;
pick_sb_modes(cpi, mi_row, mi_col + (ms >> 1), tp, &r, &d, subsize,
get_block_context(x, subsize));
r2 += r;
d2 += d;
} else {
if (mi_col + (ms >> 1) != cm->mi_cols)
mb_skip = 1;
}
set_partition_seg_context(cm, xd, mi_row, mi_col);
pl = partition_plane_context(xd, bsize);
#if CONFIG_AB4X4
if (r2 < INT_MAX)
r2 += x->partition_cost[pl][PARTITION_VERT];
#else
r2 += x->partition_cost[pl][PARTITION_VERT];
#endif
if ((RDCOST(x->rdmult, x->rddiv, r2, d2) <
RDCOST(x->rdmult, x->rddiv, srate, sdist)) && !mb_skip) {
srate = r2;
sdist = d2;
*(get_sb_partitioning(x, bsize)) = subsize;
}
restore_context(cpi, mi_row, mi_col, a, l, sa, sl, bsize);
}
// PARTITION_NONE
if (mi_row + ms <= cm->mi_rows && mi_col + ms <= cm->mi_cols) {
int r, d;
pick_sb_modes(cpi, mi_row, mi_col, tp, &r, &d, bsize,
get_block_context(x, bsize));
#if CONFIG_AB4X4
if (bsize >= BLOCK_SIZE_SB8X8) {
#else
if (bsize >= BLOCK_SIZE_MB16X16) {
#endif
set_partition_seg_context(cm, xd, mi_row, mi_col);
pl = partition_plane_context(xd, bsize);
r += x->partition_cost[pl][PARTITION_NONE];
}
if (RDCOST(x->rdmult, x->rddiv, r, d) <
RDCOST(x->rdmult, x->rddiv, srate, sdist)) {
srate = r;
sdist = d;
#if CONFIG_AB4X4
if (bsize >= BLOCK_SIZE_SB8X8)
#else
if (bsize >= BLOCK_SIZE_MB16X16)
#endif
*(get_sb_partitioning(x, bsize)) = bsize;
}
}
*rate = srate;
*dist = sdist;
if (srate < INT_MAX && sdist < INT_MAX)
encode_sb(cpi, tp, mi_row, mi_col, bsize == BLOCK_SIZE_SB64X64, bsize);
if (bsize == BLOCK_SIZE_SB64X64) {
assert(tp_orig < *tp);
assert(srate < INT_MAX);
assert(sdist < INT_MAX);
} else {
assert(tp_orig == *tp);
}
}
static void encode_sb_row(VP9_COMP *cpi, int mi_row,
TOKENEXTRA **tp, int *totalrate) {
VP9_COMMON *const cm = &cpi->common;
int mi_col;
// Initialize the left context for the new SB row
vpx_memset(&cm->left_context, 0, sizeof(cm->left_context));
vpx_memset(cm->left_seg_context, 0, sizeof(cm->left_seg_context));
// Code each SB in the row
for (mi_col = cm->cur_tile_mi_col_start;
mi_col < cm->cur_tile_mi_col_end; mi_col += 8) {
int dummy_rate, dummy_dist;
rd_pick_partition(cpi, tp, mi_row, mi_col, BLOCK_SIZE_SB64X64,
&dummy_rate, &dummy_dist);
}
}
static void init_encode_frame_mb_context(VP9_COMP *cpi) {
MACROBLOCK *const x = &cpi->mb;
VP9_COMMON *const cm = &cpi->common;
MACROBLOCKD *const xd = &x->e_mbd;
x->act_zbin_adj = 0;
cpi->seg0_idx = 0;
vpx_memset(cpi->ref_pred_count, 0, sizeof(cpi->ref_pred_count));
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)
vp9_init_mbmode_probs(cm);
// Copy data over into macro block data structures.
vp9_setup_src_planes(x, cpi->Source, 0, 0);
// TODO(jkoleszar): are these initializations required?
setup_pre_planes(xd, &cm->yv12_fb[cm->ref_frame_map[cpi->lst_fb_idx]], NULL,
0, 0, NULL, NULL);
setup_dst_planes(xd, &cm->yv12_fb[cm->new_fb_idx], 0, 0);
vp9_build_block_offsets(x);
vp9_setup_block_dptrs(&x->e_mbd, cm->subsampling_x, cm->subsampling_y);
xd->mode_info_context->mbmi.mode = DC_PRED;
xd->mode_info_context->mbmi.uv_mode = DC_PRED;
vp9_zero(cpi->count_mb_ref_frame_usage)
vp9_zero(cpi->bmode_count)
vp9_zero(cpi->ymode_count)
vp9_zero(cpi->y_uv_mode_count)
vp9_zero(cpi->sub_mv_ref_count)
vp9_zero(cpi->common.fc.mv_ref_ct)
vp9_zero(cpi->sb_ymode_count)
vp9_zero(cpi->partition_count);
// Note: this memset assumes above_context[0], [1] and [2]
// are allocated as part of the same buffer.
vpx_memset(cm->above_context[0], 0, sizeof(ENTROPY_CONTEXT) * 2 *
MAX_MB_PLANE * mi_cols_aligned_to_sb(cm));
vpx_memset(cm->above_seg_context, 0, sizeof(PARTITION_CONTEXT) *
mi_cols_aligned_to_sb(cm));
}
static void switch_lossless_mode(VP9_COMP *cpi, int lossless) {
if (lossless) {
cpi->mb.fwd_txm8x4 = vp9_short_walsh8x4;
cpi->mb.fwd_txm4x4 = vp9_short_walsh4x4;
cpi->mb.e_mbd.inv_txm4x4_1_add = vp9_short_iwalsh4x4_1_add;
cpi->mb.e_mbd.inv_txm4x4_add = vp9_short_iwalsh4x4_add;
cpi->mb.optimize = 0;
cpi->common.filter_level = 0;
cpi->zbin_mode_boost_enabled = 0;
cpi->common.txfm_mode = ONLY_4X4;
} else {
cpi->mb.fwd_txm8x4 = vp9_short_fdct8x4;
cpi->mb.fwd_txm4x4 = vp9_short_fdct4x4;
cpi->mb.e_mbd.inv_txm4x4_1_add = vp9_short_idct4x4_1_add;
cpi->mb.e_mbd.inv_txm4x4_add = vp9_short_idct4x4_add;
}
}
static void encode_frame_internal(VP9_COMP *cpi) {
int mi_row;
MACROBLOCK *const x = &cpi->mb;
VP9_COMMON *const cm = &cpi->common;
MACROBLOCKD *const xd = &x->e_mbd;
int totalrate;
// fprintf(stderr, "encode_frame_internal frame %d (%d) type %d\n",
// cpi->common.current_video_frame, cpi->common.show_frame,
// cm->frame_type);
// Compute a modified set of reference frame probabilities to use when
// prediction fails. These are based on the current general estimates for
// this frame which may be updated with each iteration of the recode loop.
vp9_compute_mod_refprobs(cm);
// debug output
#if DBG_PRNT_SEGMAP
{
FILE *statsfile;
statsfile = fopen("segmap2.stt", "a");
fprintf(statsfile, "\n");
fclose(statsfile);
}
#endif
totalrate = 0;
// Reset frame count of inter 0,0 motion vector usage.
cpi->inter_zz_count = 0;
cpi->skip_true_count[0] = cpi->skip_true_count[1] = cpi->skip_true_count[2] = 0;
cpi->skip_false_count[0] = cpi->skip_false_count[1] = cpi->skip_false_count[2] = 0;
vp9_zero(cpi->switchable_interp_count);
vp9_zero(cpi->best_switchable_interp_count);
xd->mode_info_context = cm->mi;
xd->prev_mode_info_context = cm->prev_mi;
vp9_zero(cpi->NMVcount);
vp9_zero(cpi->coef_counts_4x4);
vp9_zero(cpi->coef_counts_8x8);
vp9_zero(cpi->coef_counts_16x16);
vp9_zero(cpi->coef_counts_32x32);
vp9_zero(cm->fc.eob_branch_counts);
cpi->mb.e_mbd.lossless = cm->base_qindex == 0 &&
cm->y_dc_delta_q == 0 &&
cm->uv_dc_delta_q == 0 &&
cm->uv_ac_delta_q == 0;
switch_lossless_mode(cpi, cpi->mb.e_mbd.lossless);
vp9_frame_init_quantizer(cpi);
vp9_initialize_rd_consts(cpi, cm->base_qindex + cm->y_dc_delta_q);
vp9_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);
vpx_memset(cpi->rd_comp_pred_diff, 0, sizeof(cpi->rd_comp_pred_diff));
vpx_memset(cpi->single_pred_count, 0, sizeof(cpi->single_pred_count));
vpx_memset(cpi->comp_pred_count, 0, sizeof(cpi->comp_pred_count));
vpx_memset(cpi->txfm_count_32x32p, 0, sizeof(cpi->txfm_count_32x32p));
vpx_memset(cpi->txfm_count_16x16p, 0, sizeof(cpi->txfm_count_16x16p));
vpx_memset(cpi->txfm_count_8x8p, 0, sizeof(cpi->txfm_count_8x8p));
vpx_memset(cpi->rd_tx_select_diff, 0, sizeof(cpi->rd_tx_select_diff));
{
struct vpx_usec_timer emr_timer;
vpx_usec_timer_start(&emr_timer);
{
// Take tiles into account and give start/end MB
int tile_col, tile_row;
TOKENEXTRA *tp = cpi->tok;
for (tile_row = 0; tile_row < cm->tile_rows; tile_row++) {
vp9_get_tile_row_offsets(cm, tile_row);
for (tile_col = 0; tile_col < cm->tile_columns; tile_col++) {
TOKENEXTRA *tp_old = tp;
// For each row of SBs in the frame
vp9_get_tile_col_offsets(cm, tile_col);
for (mi_row = cm->cur_tile_mi_row_start;
mi_row < cm->cur_tile_mi_row_end;
mi_row += 8)
encode_sb_row(cpi, mi_row, &tp, &totalrate);
cpi->tok_count[tile_col] = (unsigned int)(tp - tp_old);
assert(tp - cpi->tok <=
get_token_alloc(cm->mb_rows, cm->mb_cols));
}
}
}
vpx_usec_timer_mark(&emr_timer);
cpi->time_encode_mb_row += vpx_usec_timer_elapsed(&emr_timer);
}
// 256 rate units to the bit,
// projected_frame_size in units of BYTES
cpi->projected_frame_size = totalrate >> 8;
#if 0
// Keep record of the total distortion this time around for future use
cpi->last_frame_distortion = cpi->frame_distortion;
#endif
}
static int check_dual_ref_flags(VP9_COMP *cpi) {
MACROBLOCKD *xd = &cpi->mb.e_mbd;
int ref_flags = cpi->ref_frame_flags;
if (vp9_segfeature_active(xd, 1, SEG_LVL_REF_FRAME)) {
if ((ref_flags & (VP9_LAST_FLAG | VP9_GOLD_FLAG)) == (VP9_LAST_FLAG | VP9_GOLD_FLAG) &&
vp9_check_segref(xd, 1, LAST_FRAME))
return 1;
if ((ref_flags & (VP9_GOLD_FLAG | VP9_ALT_FLAG)) == (VP9_GOLD_FLAG | VP9_ALT_FLAG) &&
vp9_check_segref(xd, 1, GOLDEN_FRAME))
return 1;
if ((ref_flags & (VP9_ALT_FLAG | VP9_LAST_FLAG)) == (VP9_ALT_FLAG | VP9_LAST_FLAG) &&
vp9_check_segref(xd, 1, ALTREF_FRAME))
return 1;
return 0;
} else {
return (!!(ref_flags & VP9_GOLD_FLAG) +
!!(ref_flags & VP9_LAST_FLAG) +
!!(ref_flags & VP9_ALT_FLAG)) >= 2;
}
}
static int get_skip_flag(MODE_INFO *mi, int mis, int ymbs, int xmbs) {
int x, y;
for (y = 0; y < ymbs; y++) {
for (x = 0; x < xmbs; x++) {
if (!mi[y * mis + x].mbmi.mb_skip_coeff)
return 0;
}
}
return 1;
}
static void set_txfm_flag(MODE_INFO *mi, int mis, int ymbs, int xmbs,
TX_SIZE txfm_size) {
int x, y;
for (y = 0; y < ymbs; y++) {
for (x = 0; x < xmbs; x++)
mi[y * mis + x].mbmi.txfm_size = txfm_size;
}
}
static void reset_skip_txfm_size_b(VP9_COMP *cpi, MODE_INFO *mi,
int mis, TX_SIZE txfm_max,
int bw, int bh, int mi_row, int mi_col,
BLOCK_SIZE_TYPE bsize) {
VP9_COMMON *const cm = &cpi->common;
MB_MODE_INFO *const mbmi = &mi->mbmi;
if (mi_row >= cm->mi_rows || mi_col >= cm->mi_cols)
return;
if (mbmi->txfm_size > txfm_max) {
MACROBLOCK *const x = &cpi->mb;
MACROBLOCKD *const xd = &x->e_mbd;
const int segment_id = mbmi->segment_id;
const int ymbs = MIN(bh, cm->mi_rows - mi_row);
const int xmbs = MIN(bw, cm->mi_cols - mi_col);
xd->mode_info_context = mi;
assert(vp9_segfeature_active(xd, segment_id, SEG_LVL_SKIP) ||
get_skip_flag(mi, mis, ymbs, xmbs));
set_txfm_flag(mi, mis, ymbs, xmbs, txfm_max);
}
}
static void reset_skip_txfm_size_sb(VP9_COMP *cpi, MODE_INFO *mi,
TX_SIZE txfm_max,
int mi_row, int mi_col,
BLOCK_SIZE_TYPE bsize) {
VP9_COMMON *const cm = &cpi->common;
const int mis = cm->mode_info_stride;
int bwl, bhl;
const int bsl = mi_width_log2(bsize), bs = 1 << (bsl - 1);
if (mi_row >= cm->mi_rows || mi_col >= cm->mi_cols)
return;
bwl = mi_width_log2(mi->mbmi.sb_type);
bhl = mi_height_log2(mi->mbmi.sb_type);
if (bwl == bsl && bhl == bsl) {
reset_skip_txfm_size_b(cpi, mi, mis, txfm_max, 1 << bsl, 1 << bsl,
mi_row, mi_col, bsize);
} else if (bwl == bsl && bhl < bsl) {
reset_skip_txfm_size_b(cpi, mi, mis, txfm_max, 1 << bsl, bs,
mi_row, mi_col, bsize);
reset_skip_txfm_size_b(cpi, mi + bs * mis, mis, txfm_max, 1 << bsl, bs,
mi_row + bs, mi_col, bsize);
} else if (bwl < bsl && bhl == bsl) {
reset_skip_txfm_size_b(cpi, mi, mis, txfm_max, bs, 1 << bsl,
mi_row, mi_col, bsize);
reset_skip_txfm_size_b(cpi, mi + bs, mis, txfm_max, bs, 1 << bsl,
mi_row, mi_col + bs, bsize);
} else {
BLOCK_SIZE_TYPE subsize;
int n;
assert(bwl < bsl && bhl < bsl);
if (bsize == BLOCK_SIZE_SB64X64) {
subsize = BLOCK_SIZE_SB32X32;
} else if (bsize == BLOCK_SIZE_SB32X32) {
subsize = BLOCK_SIZE_MB16X16;
} else {
assert(bsize == BLOCK_SIZE_MB16X16);
subsize = BLOCK_SIZE_SB8X8;
}
for (n = 0; n < 4; n++) {
const int y_idx = n >> 1, x_idx = n & 0x01;
reset_skip_txfm_size_sb(cpi, mi + y_idx * bs * mis + x_idx * bs,
txfm_max, mi_row + y_idx * bs,
mi_col + x_idx * bs, subsize);
}
}
}
static void reset_skip_txfm_size(VP9_COMP *cpi, TX_SIZE txfm_max) {
VP9_COMMON *const cm = &cpi->common;
int mi_row, mi_col;
const int mis = cm->mode_info_stride;
MODE_INFO *mi, *mi_ptr = cm->mi;
for (mi_row = 0; mi_row < cm->mi_rows;
mi_row += 8, mi_ptr += 8 * mis) {
mi = mi_ptr;
for (mi_col = 0; mi_col < cm->mi_cols;
mi_col += 8, mi += 8) {
reset_skip_txfm_size_sb(cpi, mi, txfm_max,
mi_row, mi_col, BLOCK_SIZE_SB64X64);
}
}
}
void vp9_encode_frame(VP9_COMP *cpi) {
if (cpi->sf.RD) {
int i, frame_type, pred_type;
TXFM_MODE txfm_type;
/*
* This code does a single RD pass over the whole frame assuming
* either compound, single or hybrid prediction as per whatever has
* worked best for that type of frame in the past.
* It also predicts whether another coding mode would have worked
* better that this coding mode. If that is the case, it remembers
* that for subsequent frames.
* It does the same analysis for transform size selection also.
*/
if (cpi->common.frame_type == KEY_FRAME)
frame_type = 0;
else if (cpi->is_src_frame_alt_ref && cpi->refresh_golden_frame)
frame_type = 3;
else if (cpi->refresh_golden_frame || cpi->refresh_alt_ref_frame)
frame_type = 1;
else
frame_type = 2;
/* prediction (compound, single or hybrid) mode selection */
if (frame_type == 3)
pred_type = SINGLE_PREDICTION_ONLY;
else if (cpi->rd_prediction_type_threshes[frame_type][1] >
cpi->rd_prediction_type_threshes[frame_type][0] &&
cpi->rd_prediction_type_threshes[frame_type][1] >
cpi->rd_prediction_type_threshes[frame_type][2] &&
check_dual_ref_flags(cpi) && cpi->static_mb_pct == 100)
pred_type = COMP_PREDICTION_ONLY;
else if (cpi->rd_prediction_type_threshes[frame_type][0] >
cpi->rd_prediction_type_threshes[frame_type][2])
pred_type = SINGLE_PREDICTION_ONLY;
else
pred_type = HYBRID_PREDICTION;
/* transform size (4x4, 8x8, 16x16 or select-per-mb) selection */
cpi->mb.e_mbd.lossless = 0;
if (cpi->oxcf.lossless) {
txfm_type = ONLY_4X4;
cpi->mb.e_mbd.lossless = 1;
} else
#if 0
/* FIXME (rbultje): this code is disabled until we support cost updates
* while a frame is being encoded; the problem is that each time we
* "revert" to 4x4 only (or even 8x8 only), the coefficient probabilities
* for 16x16 (and 8x8) start lagging behind, thus leading to them lagging
* further behind and not being chosen for subsequent frames either. This
* is essentially a local minimum problem that we can probably fix by
* estimating real costs more closely within a frame, perhaps by re-
* calculating costs on-the-fly as frame encoding progresses. */
if (cpi->rd_tx_select_threshes[frame_type][TX_MODE_SELECT] >
cpi->rd_tx_select_threshes[frame_type][ONLY_4X4] &&
cpi->rd_tx_select_threshes[frame_type][TX_MODE_SELECT] >
cpi->rd_tx_select_threshes[frame_type][ALLOW_16X16] &&
cpi->rd_tx_select_threshes[frame_type][TX_MODE_SELECT] >
cpi->rd_tx_select_threshes[frame_type][ALLOW_8X8]) {
txfm_type = TX_MODE_SELECT;
} else if (cpi->rd_tx_select_threshes[frame_type][ONLY_4X4] >
cpi->rd_tx_select_threshes[frame_type][ALLOW_8X8]
&& cpi->rd_tx_select_threshes[frame_type][ONLY_4X4] >
cpi->rd_tx_select_threshes[frame_type][ALLOW_16X16]
) {
txfm_type = ONLY_4X4;
} else if (cpi->rd_tx_select_threshes[frame_type][ALLOW_16X16] >=
cpi->rd_tx_select_threshes[frame_type][ALLOW_8X8]) {
txfm_type = ALLOW_16X16;
} else
txfm_type = ALLOW_8X8;
#else
txfm_type = cpi->rd_tx_select_threshes[frame_type][ALLOW_32X32] >=
cpi->rd_tx_select_threshes[frame_type][TX_MODE_SELECT] ?
ALLOW_32X32 : TX_MODE_SELECT;
#endif
cpi->common.txfm_mode = txfm_type;
if (txfm_type != TX_MODE_SELECT) {
cpi->common.prob_tx[0] = 128;
cpi->common.prob_tx[1] = 128;
}
cpi->common.comp_pred_mode = pred_type;
encode_frame_internal(cpi);
for (i = 0; i < NB_PREDICTION_TYPES; ++i) {
const int diff = (int)(cpi->rd_comp_pred_diff[i] / cpi->common.MBs);
cpi->rd_prediction_type_threshes[frame_type][i] += diff;
cpi->rd_prediction_type_threshes[frame_type][i] >>= 1;
}
for (i = 0; i < NB_TXFM_MODES; ++i) {
int64_t pd = cpi->rd_tx_select_diff[i];
int diff;
if (i == TX_MODE_SELECT)
pd -= RDCOST(cpi->mb.rdmult, cpi->mb.rddiv,
2048 * (TX_SIZE_MAX_SB - 1), 0);
diff = (int)(pd / cpi->common.MBs);
cpi->rd_tx_select_threshes[frame_type][i] += diff;
cpi->rd_tx_select_threshes[frame_type][i] /= 2;
}
if (cpi->common.comp_pred_mode == HYBRID_PREDICTION) {
int single_count_zero = 0;
int comp_count_zero = 0;
for (i = 0; i < COMP_PRED_CONTEXTS; i++) {
single_count_zero += cpi->single_pred_count[i];
comp_count_zero += cpi->comp_pred_count[i];
}
if (comp_count_zero == 0) {
cpi->common.comp_pred_mode = SINGLE_PREDICTION_ONLY;
} else if (single_count_zero == 0) {
cpi->common.comp_pred_mode = COMP_PREDICTION_ONLY;
}
}
if (cpi->common.txfm_mode == TX_MODE_SELECT) {
const int count4x4 = cpi->txfm_count_16x16p[TX_4X4] +
cpi->txfm_count_32x32p[TX_4X4] +
cpi->txfm_count_8x8p[TX_4X4];
const int count8x8_lp = cpi->txfm_count_32x32p[TX_8X8] +
cpi->txfm_count_16x16p[TX_8X8];
const int count8x8_8x8p = cpi->txfm_count_8x8p[TX_8X8];
const int count16x16_16x16p = cpi->txfm_count_16x16p[TX_16X16];
const int count16x16_lp = cpi->txfm_count_32x32p[TX_16X16];
const int count32x32 = cpi->txfm_count_32x32p[TX_32X32];
if (count4x4 == 0 && count16x16_lp == 0 && count16x16_16x16p == 0 &&
count32x32 == 0) {
cpi->common.txfm_mode = ALLOW_8X8;
reset_skip_txfm_size(cpi, TX_8X8);
} else if (count8x8_8x8p == 0 && count16x16_16x16p == 0 &&
count8x8_lp == 0 && count16x16_lp == 0 && count32x32 == 0) {
cpi->common.txfm_mode = ONLY_4X4;
reset_skip_txfm_size(cpi, TX_4X4);
} else if (count8x8_lp == 0 && count16x16_lp == 0 && count4x4 == 0) {
cpi->common.txfm_mode = ALLOW_32X32;
} else if (count32x32 == 0 && count8x8_lp == 0 && count4x4 == 0) {
cpi->common.txfm_mode = ALLOW_16X16;
reset_skip_txfm_size(cpi, TX_16X16);
}
}
// Update interpolation filter strategy for next frame.
if ((cpi->common.frame_type != KEY_FRAME) && (cpi->sf.search_best_filter))
vp9_select_interp_filter_type(cpi);
} else {
encode_frame_internal(cpi);
}
}
void vp9_build_block_offsets(MACROBLOCK *x) {
}
static void sum_intra_stats(VP9_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;
#if CONFIG_AB4X4
if (xd->mode_info_context->mbmi.sb_type >= BLOCK_SIZE_SB8X8) {
#else
if (xd->mode_info_context->mbmi.sb_type > BLOCK_SIZE_SB8X8) {
#endif
++cpi->sb_ymode_count[m];
} else {
++cpi->ymode_count[m];
}
++cpi->y_uv_mode_count[m][uvm];
if (m == I4X4_PRED) {
int b = 0;
do {
int m = xd->mode_info_context->bmi[b].as_mode.first;
++cpi->bmode_count[m];
} while (++b < 4);
}
}
// Experimental stub function to create a per MB zbin adjustment based on
// some previously calculated measure of MB activity.
static void adjust_act_zbin(VP9_COMP *cpi, MACROBLOCK *x) {
#if USE_ACT_INDEX
x->act_zbin_adj = *(x->mb_activity_ptr);
#else
int64_t a;
int64_t b;
int64_t 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_t)b + (a >> 1)) / a) - 1;
else
x->act_zbin_adj = 1 - (int)(((int64_t)a + (b >> 1)) / b);
#endif
}
static void encode_superblock(VP9_COMP *cpi, TOKENEXTRA **t,
int output_enabled, int mi_row, int mi_col,
BLOCK_SIZE_TYPE bsize) {
VP9_COMMON *const cm = &cpi->common;
MACROBLOCK *const x = &cpi->mb;
MACROBLOCKD *const xd = &x->e_mbd;
int n;
MODE_INFO *mi = xd->mode_info_context;
MB_MODE_INFO *mbmi = &mi->mbmi;
unsigned int segment_id = mbmi->segment_id;
const int mis = cm->mode_info_stride;
const int bwl = mi_width_log2(bsize);
const int bw = 1 << bwl, bh = 1 << mi_height_log2(bsize);
if (cm->frame_type == KEY_FRAME) {
if (cpi->oxcf.tuning == VP8_TUNE_SSIM) {
adjust_act_zbin(cpi, x);
vp9_update_zbin_extra(cpi, x);
}
} else {
vp9_setup_interp_filters(xd, mbmi->interp_filter, cm);
if (cpi->oxcf.tuning == VP8_TUNE_SSIM) {
// Adjust the zbin based on this MB rate.
adjust_act_zbin(cpi, x);
}
// Experimental code. Special case for gf and arf zeromv modes.
// Increase zbin size to suppress noise
cpi->zbin_mode_boost = 0;
if (cpi->zbin_mode_boost_enabled) {
if (mbmi->ref_frame != INTRA_FRAME) {
if (mbmi->mode == ZEROMV) {
if (mbmi->ref_frame != LAST_FRAME)
cpi->zbin_mode_boost = GF_ZEROMV_ZBIN_BOOST;
else
cpi->zbin_mode_boost = LF_ZEROMV_ZBIN_BOOST;
} else if (mbmi->mode == SPLITMV) {
cpi->zbin_mode_boost = SPLIT_MV_ZBIN_BOOST;
} else {
cpi->zbin_mode_boost = MV_ZBIN_BOOST;
}
} else {
cpi->zbin_mode_boost = INTRA_ZBIN_BOOST;
}
}
vp9_update_zbin_extra(cpi, x);
}
#if CONFIG_AB4X4
if (mbmi->ref_frame == INTRA_FRAME &&
bsize < BLOCK_SIZE_SB8X8) {
#else
if (mbmi->mode == I4X4_PRED) {
assert(bsize == BLOCK_SIZE_SB8X8 && mbmi->txfm_size == TX_4X4);
#endif
vp9_encode_intra4x4mby(x, BLOCK_SIZE_SB8X8);
vp9_build_intra_predictors_sbuv_s(xd, BLOCK_SIZE_SB8X8);
vp9_encode_sbuv(cm, x, BLOCK_SIZE_SB8X8);
if (output_enabled)
sum_intra_stats(cpi, x);
} else if (mbmi->ref_frame == INTRA_FRAME) {
vp9_build_intra_predictors_sby_s(xd, bsize);
vp9_build_intra_predictors_sbuv_s(xd, bsize);
if (output_enabled)
sum_intra_stats(cpi, x);
} else {
int idx = cm->ref_frame_map[get_ref_frame_idx(cpi, mbmi->ref_frame)];
YV12_BUFFER_CONFIG *ref_fb = &cm->yv12_fb[idx];
YV12_BUFFER_CONFIG *second_ref_fb = NULL;
if (mbmi->second_ref_frame > 0) {
idx = cm->ref_frame_map[get_ref_frame_idx(cpi, mbmi->second_ref_frame)];
second_ref_fb = &cm->yv12_fb[idx];
}
assert(cm->frame_type != KEY_FRAME);
setup_pre_planes(xd, ref_fb, second_ref_fb,
mi_row, mi_col, xd->scale_factor, xd->scale_factor_uv);
vp9_build_inter_predictors_sb(xd, mi_row, mi_col,
bsize < BLOCK_SIZE_SB8X8 ? BLOCK_SIZE_SB8X8
: bsize);
}
#if CONFIG_AB4X4
if (mbmi->ref_frame == INTRA_FRAME &&
bsize < BLOCK_SIZE_SB8X8) {
#else
if (mbmi->mode == I4X4_PRED) {
assert(bsize == BLOCK_SIZE_SB8X8);
#endif
vp9_tokenize_sb(cpi, xd, t, !output_enabled, BLOCK_SIZE_SB8X8);
} else if (!x->skip) {
vp9_encode_sb(cm, x, (bsize < BLOCK_SIZE_SB8X8) ? BLOCK_SIZE_SB8X8 : bsize);
vp9_tokenize_sb(cpi, xd, t, !output_enabled,
(bsize < BLOCK_SIZE_SB8X8) ? BLOCK_SIZE_SB8X8 : bsize);
} else {
// FIXME(rbultje): not tile-aware (mi - 1)
int mb_skip_context =
(mi - 1)->mbmi.mb_skip_coeff + (mi - mis)->mbmi.mb_skip_coeff;
mbmi->mb_skip_coeff = 1;
if (output_enabled)
cpi->skip_true_count[mb_skip_context]++;
vp9_reset_sb_tokens_context(xd,
(bsize < BLOCK_SIZE_SB8X8) ? BLOCK_SIZE_SB8X8 : bsize);
}
// copy skip flag on all mb_mode_info contexts in this SB
// if this was a skip at this txfm size
for (n = 1; n < bw * bh; n++) {
const int x_idx = n & (bw - 1), y_idx = n >> bwl;
if (mi_col + x_idx < cm->mi_cols && mi_row + y_idx < cm->mi_rows)
mi[x_idx + y_idx * mis].mbmi.mb_skip_coeff = mi->mbmi.mb_skip_coeff;
}
if (output_enabled) {
if (cm->txfm_mode == TX_MODE_SELECT &&
!(mbmi->mb_skip_coeff ||
vp9_segfeature_active(xd, segment_id, SEG_LVL_SKIP))) {
if (bsize >= BLOCK_SIZE_SB32X32) {
cpi->txfm_count_32x32p[mbmi->txfm_size]++;
} else if (bsize >= BLOCK_SIZE_MB16X16) {
cpi->txfm_count_16x16p[mbmi->txfm_size]++;
} else {
cpi->txfm_count_8x8p[mbmi->txfm_size]++;
}
} else {
int x, y;
TX_SIZE sz = (cm->txfm_mode == TX_MODE_SELECT) ? TX_32X32 : cm->txfm_mode;
if (sz == TX_32X32 && bsize < BLOCK_SIZE_SB32X32)
sz = TX_16X16;
if (sz == TX_16X16 && bsize < BLOCK_SIZE_MB16X16)
sz = TX_8X8;
#if CONFIG_AB4X4
if (sz == TX_8X8 && bsize < BLOCK_SIZE_SB8X8)
#else
if (sz == TX_8X8 && (mbmi->mode == SPLITMV ||
mbmi->mode == I4X4_PRED))
#endif
sz = TX_4X4;
for (y = 0; y < bh; y++) {
for (x = 0; x < bw; x++) {
if (mi_col + x < cm->mi_cols && mi_row + y < cm->mi_rows) {
mi[mis * y + x].mbmi.txfm_size = sz;
}
}
}
}
}
}
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