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vpx/vp8/encoder/tokenize.c
Deb Mukherjee 57d953479b Adding contextual coding of mb_skip_coeff flag. 
Using contextual coding of the mkb_skip_coeff flag using the
values of this flag from the left and above. There is a small
improvement of about 0.15% on Derf:
http://www.corp.google.com/~debargha/vp8_results/mbskipcontext.html

Refactored to use pred_common.c by adding a new context type.

Results on HD set (about 0.66% improvement):
http://www.corp.google.com/~debargha/vp8_results/mbskipcontext_hd.html

Incliding missing refactoring to use the pred_common utilities.

Change-Id: I95373382d429b5a59610d77f69a0fea2be628278
2012-03-21 03:55:44 -07:00

978 lines
25 KiB
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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 <math.h>
#include <stdio.h>
#include <string.h>
#include <assert.h>
#include "onyx_int.h"
#include "tokenize.h"
#include "vpx_mem/vpx_mem.h"
#include "vp8/common/pred_common.h"
#include "vp8/common/seg_common.h"
/* Global event counters used for accumulating statistics across several
compressions, then generating context.c = initial stats. */
#ifdef ENTROPY_STATS
INT64 context_counters[BLOCK_TYPES] [COEF_BANDS] [PREV_COEF_CONTEXTS] [MAX_ENTROPY_TOKENS];
INT64 context_counters_8x8[BLOCK_TYPES] [COEF_BANDS] [PREV_COEF_CONTEXTS] [MAX_ENTROPY_TOKENS];
#endif
void vp8_stuff_mb(VP8_COMP *cpi, MACROBLOCKD *x, TOKENEXTRA **t) ;
void vp8_stuff_mb_8x8(VP8_COMP *cpi, MACROBLOCKD *x, TOKENEXTRA **t) ;
void vp8_fix_contexts(MACROBLOCKD *x);
static TOKENVALUE dct_value_tokens[DCT_MAX_VALUE*2];
const TOKENVALUE *vp8_dct_value_tokens_ptr;
static int dct_value_cost[DCT_MAX_VALUE*2];
const int *vp8_dct_value_cost_ptr;
#ifdef ENC_DEBUG
extern int mb_row_debug;
extern int mb_col_debug;
extern int enc_debug;
#endif
static void fill_value_tokens()
{
TOKENVALUE *const t = dct_value_tokens + DCT_MAX_VALUE;
vp8_extra_bit_struct *const e = vp8_extra_bits;
int i = -DCT_MAX_VALUE;
int sign = 1;
do
{
if (!i)
sign = 0;
{
const int a = sign ? -i : i;
int eb = sign;
if (a > 4)
{
int j = 4;
while (++j < 11 && e[j].base_val <= a) {}
t[i].Token = --j;
eb |= (a - e[j].base_val) << 1;
}
else
t[i].Token = a;
t[i].Extra = eb;
}
// initialize the cost for extra bits for all possible coefficient value.
{
int cost = 0;
vp8_extra_bit_struct *p = vp8_extra_bits + t[i].Token;
if (p->base_val)
{
const int extra = t[i].Extra;
const int Length = p->Len;
if (Length)
cost += vp8_treed_cost(p->tree, p->prob, extra >> 1, Length);
cost += vp8_cost_bit(vp8_prob_half, extra & 1); /* sign */
dct_value_cost[i + DCT_MAX_VALUE] = cost;
}
}
}
while (++i < DCT_MAX_VALUE);
vp8_dct_value_tokens_ptr = dct_value_tokens + DCT_MAX_VALUE;
vp8_dct_value_cost_ptr = dct_value_cost + DCT_MAX_VALUE;
}
static void tokenize2nd_order_b_8x8
(
MACROBLOCKD *xd,
const BLOCKD *const b,
TOKENEXTRA **tp,
const int type, /* which plane: 0=Y no DC, 1=Y2, 2=UV, 3=Y with DC */
const FRAME_TYPE frametype,
ENTROPY_CONTEXT *a,
ENTROPY_CONTEXT *l,
VP8_COMP *cpi
)
{
int pt; /* near block/prev token context index */
int c = 0; /* start at DC */
const int eob = b->eob; /* one beyond last nonzero coeff */
TOKENEXTRA *t = *tp; /* store tokens starting here */
int x;
const short *qcoeff_ptr = b->qcoeff;
int seg_eob = 4;
int segment_id = xd->mode_info_context->mbmi.segment_id;
if ( segfeature_active( xd, segment_id, SEG_LVL_EOB ) )
{
seg_eob = get_segdata( xd, segment_id, SEG_LVL_EOB );
}
VP8_COMBINEENTROPYCONTEXTS(pt, *a, *l);
assert(eob<=4);
do
{
const int band = vp8_coef_bands[c];
int v = 0;
if (c < eob)
{
int rc = vp8_default_zig_zag1d[c];
v = qcoeff_ptr[rc];
assert(-DCT_MAX_VALUE <= v && v < (DCT_MAX_VALUE));
t->Extra = vp8_dct_value_tokens_ptr[v].Extra;
x = vp8_dct_value_tokens_ptr[v].Token;
}
else
x = DCT_EOB_TOKEN;
t->Token = x;
//printf("Token : %d\n", x);
t->context_tree = cpi->common.fc.coef_probs_8x8 [type] [band] [pt];
t->skip_eob_node = pt == 0 && ((band > 0 && type > 0) || (band > 1 && type == 0));
#ifdef ENC_DEBUG
if (t->skip_eob_node && vp8_coef_encodings[x].Len==1)
printf("Trouble 2 x=%d Len=%d skip=%d eob=%d c=%d band=%d type=%d: [%d %d %d]\n",
x, vp8_coef_encodings[x].Len, t->skip_eob_node, eob, c, band, type,
cpi->count, mb_row_debug, mb_col_debug);
#endif
++cpi->coef_counts_8x8 [type] [band] [pt] [x];
}
while (pt = vp8_prev_token_class[x], ++t, c < eob && ++c <seg_eob);
*tp = t;
pt = (c != !type); /* 0 <-> all coeff data is zero */
*a = *l = pt;
}
static void tokenize2nd_order_b
(
MACROBLOCKD *xd,
TOKENEXTRA **tp,
VP8_COMP *cpi
)
{
int pt; /* near block/prev token context index */
int c; /* start at DC */
TOKENEXTRA *t = *tp;/* store tokens starting here */
const BLOCKD *b;
const short *qcoeff_ptr;
ENTROPY_CONTEXT * a;
ENTROPY_CONTEXT * l;
int band, rc, v, token;
int seg_eob = 16;
int segment_id = xd->mode_info_context->mbmi.segment_id;
if ( segfeature_active( xd, segment_id, SEG_LVL_EOB ) )
{
seg_eob = get_segdata( xd, segment_id, SEG_LVL_EOB );
}
b = xd->block + 24;
qcoeff_ptr = b->qcoeff;
a = (ENTROPY_CONTEXT *)xd->above_context + 8;
l = (ENTROPY_CONTEXT *)xd->left_context + 8;
VP8_COMBINEENTROPYCONTEXTS(pt, *a, *l);
for (c = 0; c < b->eob; c++)
{
rc = vp8_default_zig_zag1d[c];
band = vp8_coef_bands[c];
v = qcoeff_ptr[rc];
t->Extra = vp8_dct_value_tokens_ptr[v].Extra;
token = vp8_dct_value_tokens_ptr[v].Token;
t->Token = token;
t->context_tree = cpi->common.fc.coef_probs [1] [band] [pt];
t->skip_eob_node = ((pt == 0) && (band > 0));
++cpi->coef_counts [1] [band] [pt] [token];
pt = vp8_prev_token_class[token];
t++;
}
if (c < seg_eob)
{
band = vp8_coef_bands[c];
t->Token = DCT_EOB_TOKEN;
t->context_tree = cpi->common.fc.coef_probs [1] [band] [pt];
t->skip_eob_node = ((pt == 0) && (band > 0));
++cpi->coef_counts [1] [band] [pt] [DCT_EOB_TOKEN];
t++;
}
*tp = t;
pt = (c != 0); /* 0 <-> all coeff data is zero */
*a = *l = pt;
}
static void tokenize1st_order_b_8x8
(
MACROBLOCKD *xd,
const BLOCKD *const b,
TOKENEXTRA **tp,
const int type, /* which plane: 0=Y no DC, 1=Y2, 2=UV, 3=Y with DC */
const FRAME_TYPE frametype,
ENTROPY_CONTEXT *a,
ENTROPY_CONTEXT *l,
VP8_COMP *cpi
)
{
int pt; /* near block/prev token context index */
int c = type ? 0 : 1; /* start at DC unless type 0 */
const int eob = b->eob; /* one beyond last nonzero coeff */
TOKENEXTRA *t = *tp; /* store tokens starting here */
int x;
const short *qcoeff_ptr = b->qcoeff;
int seg_eob = 64;
int segment_id = xd->mode_info_context->mbmi.segment_id;
if ( segfeature_active( xd, segment_id, SEG_LVL_EOB ) )
{
seg_eob = get_segdata( xd, segment_id, SEG_LVL_EOB );
}
VP8_COMBINEENTROPYCONTEXTS(pt, *a, *l);
do
{
const int band = vp8_coef_bands_8x8[c];
int v;
x = DCT_EOB_TOKEN;
if (c < eob)
{
int rc = vp8_default_zig_zag1d_8x8[c];
v = qcoeff_ptr[rc];
assert(-DCT_MAX_VALUE <= v && v < (DCT_MAX_VALUE));
t->Extra = vp8_dct_value_tokens_ptr[v].Extra;
x = vp8_dct_value_tokens_ptr[v].Token;
}
t->Token = x;
t->context_tree = cpi->common.fc.coef_probs_8x8 [type] [band] [pt];
t->skip_eob_node = pt == 0 && ((band > 0 && type > 0) || (band > 1 && type == 0));
#ifdef ENC_DEBUG
if (t->skip_eob_node && vp8_coef_encodings[x].Len==1)
printf("Trouble 1 x=%d Len=%d skip=%d eob=%d c=%d band=%d type=%d: [%d %d %d]\n", x, vp8_coef_encodings[x].Len, t->skip_eob_node, eob, c, band, type, cpi->count, mb_row_debug, mb_col_debug);
#endif
++cpi->coef_counts_8x8 [type] [band] [pt] [x];
}
while (pt = vp8_prev_token_class[x], ++t, c < eob && ++c < seg_eob);
*tp = t;
pt = (c != !type); /* 0 <-> all coeff data is zero */
*a = *l = pt;
}
static void tokenize1st_order_b
(
MACROBLOCKD *xd,
TOKENEXTRA **tp,
int type, /* which plane: 0=Y no DC, 1=Y2, 2=UV, 3=Y with DC */
VP8_COMP *cpi
)
{
unsigned int block;
const BLOCKD *b;
int pt; /* near block/prev token context index */
int c;
int token;
TOKENEXTRA *t = *tp;/* store tokens starting here */
const short *qcoeff_ptr;
ENTROPY_CONTEXT * a;
ENTROPY_CONTEXT * l;
int band, rc, v;
int tmp1, tmp2;
int seg_eob = 16;
int segment_id = xd->mode_info_context->mbmi.segment_id;
if ( segfeature_active( xd, segment_id, SEG_LVL_EOB ) )
{
seg_eob = get_segdata( xd, segment_id, SEG_LVL_EOB );
}
b = xd->block;
/* Luma */
for (block = 0; block < 16; block++, b++)
{
tmp1 = vp8_block2above[block];
tmp2 = vp8_block2left[block];
qcoeff_ptr = b->qcoeff;
a = (ENTROPY_CONTEXT *)xd->above_context + tmp1;
l = (ENTROPY_CONTEXT *)xd->left_context + tmp2;
VP8_COMBINEENTROPYCONTEXTS(pt, *a, *l);
c = type ? 0 : 1;
for (; c < b->eob; c++)
{
rc = vp8_default_zig_zag1d[c];
band = vp8_coef_bands[c];
v = qcoeff_ptr[rc];
t->Extra = vp8_dct_value_tokens_ptr[v].Extra;
token = vp8_dct_value_tokens_ptr[v].Token;
t->Token = token;
t->context_tree = cpi->common.fc.coef_probs [type] [band] [pt];
t->skip_eob_node = pt == 0 &&
((band > 0 && type > 0) || (band > 1 && type == 0));
++cpi->coef_counts [type] [band] [pt] [token];
pt = vp8_prev_token_class[token];
t++;
}
if (c < seg_eob)
{
band = vp8_coef_bands[c];
t->Token = DCT_EOB_TOKEN;
t->context_tree = cpi->common.fc.coef_probs [type] [band] [pt];
t->skip_eob_node = pt == 0 &&
((band > 0 && type > 0) || (band > 1 && type == 0));
++cpi->coef_counts [type] [band] [pt] [DCT_EOB_TOKEN];
t++;
}
*tp = t;
pt = (c != !type); /* 0 <-> all coeff data is zero */
*a = *l = pt;
}
/* Chroma */
for (block = 16; block < 24; block++, b++)
{
tmp1 = vp8_block2above[block];
tmp2 = vp8_block2left[block];
qcoeff_ptr = b->qcoeff;
a = (ENTROPY_CONTEXT *)xd->above_context + tmp1;
l = (ENTROPY_CONTEXT *)xd->left_context + tmp2;
VP8_COMBINEENTROPYCONTEXTS(pt, *a, *l);
for (c = 0; c < b->eob; c++)
{
rc = vp8_default_zig_zag1d[c];
band = vp8_coef_bands[c];
v = qcoeff_ptr[rc];
t->Extra = vp8_dct_value_tokens_ptr[v].Extra;
token = vp8_dct_value_tokens_ptr[v].Token;
t->Token = token;
t->context_tree = cpi->common.fc.coef_probs [2] [band] [pt];
t->skip_eob_node = ((pt == 0) && (band > 0));
++cpi->coef_counts [2] [band] [pt] [token];
pt = vp8_prev_token_class[token];
t++;
}
if (c < seg_eob)
{
band = vp8_coef_bands[c];
t->Token = DCT_EOB_TOKEN;
t->context_tree = cpi->common.fc.coef_probs [2] [band] [pt];
t->skip_eob_node = ((pt == 0) && (band > 0));
++cpi->coef_counts [2] [band] [pt] [DCT_EOB_TOKEN];
t++;
}
*tp = t;
pt = (c != 0); /* 0 <-> all coeff data is zero */
*a = *l = pt;
}
}
int mby_is_skippable(MACROBLOCKD *x, int has_y2_block)
{
int skip = 1;
int i = 0;
if (has_y2_block)
{
for (i = 0; i < 16; i++)
skip &= (x->block[i].eob < 2);
skip &= (!x->block[24].eob);
}
else
{
for (i = 0; i < 16; i++)
skip &= (!x->block[i].eob);
}
return skip;
}
int mbuv_is_skippable(MACROBLOCKD *x)
{
int skip = 1;
int i;
for (i = 16; i < 24; i++)
skip &= (!x->block[i].eob);
return skip;
}
int mb_is_skippable(MACROBLOCKD *x, int has_y2_block)
{
return (mby_is_skippable(x, has_y2_block) &
mbuv_is_skippable(x));
}
int mby_is_skippable_8x8(MACROBLOCKD *x)
{
int skip = 1;
int i = 0;
for (i = 0; i < 16; i+=4)
skip &= (x->block[i].eob < 2);
skip &= (!x->block[24].eob);
return skip;
}
int mbuv_is_skippable_8x8(MACROBLOCKD *x)
{
return (!x->block[16].eob) & (!x->block[20].eob);
}
int mb_is_skippable_8x8(MACROBLOCKD *x)
{
return (mby_is_skippable_8x8(x) & mbuv_is_skippable_8x8(x));
}
void vp8_tokenize_mb(VP8_COMP *cpi, MACROBLOCKD *x, TOKENEXTRA **t)
{
int plane_type;
int has_y2_block;
int b;
int tx_type = x->mode_info_context->mbmi.txfm_size;
#if CONFIG_NEWENTROPY
int mb_skip_context = get_pred_context(&cpi->common, x, PRED_MBSKIP);
#endif
// If the MB is going to be skipped because of a segment level flag
// exclude this from the skip count stats used to calculate the
// transmitted skip probability;
int skip_inc;
int segment_id = x->mode_info_context->mbmi.segment_id;
if ( !segfeature_active( x, segment_id, SEG_LVL_EOB ) ||
( get_segdata( x, segment_id, SEG_LVL_EOB ) != 0) )
{
skip_inc = 1;
}
else
skip_inc = 0;
has_y2_block = (x->mode_info_context->mbmi.mode != B_PRED
&& x->mode_info_context->mbmi.mode != I8X8_PRED
&& x->mode_info_context->mbmi.mode != SPLITMV);
x->mode_info_context->mbmi.mb_skip_coeff =
(( tx_type == TX_8X8 ) ?
mb_is_skippable_8x8(x) :
mb_is_skippable(x, has_y2_block));
if (x->mode_info_context->mbmi.mb_skip_coeff)
{
#if CONFIG_NEWENTROPY
cpi->skip_true_count[mb_skip_context] += skip_inc;
#else
cpi->skip_true_count += skip_inc;
#endif
if (!cpi->common.mb_no_coeff_skip)
{
if ( tx_type == TX_8X8 )
vp8_stuff_mb_8x8(cpi, x, t) ;
else
vp8_stuff_mb(cpi, x, t) ;
}
else
{
vp8_fix_contexts(x);
}
return;
}
#if CONFIG_NEWENTROPY
cpi->skip_false_count[mb_skip_context] += skip_inc;
#else
cpi->skip_false_count += skip_inc;
#endif
plane_type = 3;
if(has_y2_block)
{
if ( tx_type == TX_8X8 )
{
ENTROPY_CONTEXT * A = (ENTROPY_CONTEXT *)x->above_context;
ENTROPY_CONTEXT * L = (ENTROPY_CONTEXT *)x->left_context;
tokenize2nd_order_b_8x8(x,
x->block + 24, t, 1, x->frame_type,
A + vp8_block2above_8x8[24],
L + vp8_block2left_8x8[24], cpi);
}
else
tokenize2nd_order_b(x, t, cpi);
plane_type = 0;
}
if ( tx_type == TX_8X8 )
{
ENTROPY_CONTEXT * A = (ENTROPY_CONTEXT *)x->above_context;
ENTROPY_CONTEXT * L = (ENTROPY_CONTEXT *)x->left_context;
for (b = 0; b < 16; b+=4)
{
tokenize1st_order_b_8x8(x,
x->block + b, t, plane_type, x->frame_type,
A + vp8_block2above_8x8[b],
L + vp8_block2left_8x8[b],
cpi);
*(A + vp8_block2above_8x8[b] + 1) = *(A + vp8_block2above_8x8[b]);
*(L + vp8_block2left_8x8[b] + 1) = *(L + vp8_block2left_8x8[b] );
}
for (b = 16; b < 24; b+=4)
{
tokenize1st_order_b_8x8(x,
x->block + b, t, 2, x->frame_type,
A + vp8_block2above_8x8[b],
L + vp8_block2left_8x8[b],
cpi);
*(A + vp8_block2above_8x8[b]+1) = *(A + vp8_block2above_8x8[b]);
*(L + vp8_block2left_8x8[b]+1 ) = *(L + vp8_block2left_8x8[b]);
}
}
else
tokenize1st_order_b(x, t, plane_type, cpi);
}
#ifdef ENTROPY_STATS
void init_context_counters(void)
{
vpx_memset(context_counters, 0, sizeof(context_counters));
vpx_memset(context_counters_8x8, 0, sizeof(context_counters_8x8));
}
void print_context_counters()
{
int type, band, pt, t;
FILE *const f = fopen("context.c", "w");
fprintf(f, "#include \"entropy.h\"\n");
fprintf(f, "\n/* *** GENERATED FILE: DO NOT EDIT *** */\n\n");
fprintf(f, "int Contexts[BLOCK_TYPES] [COEF_BANDS] [PREV_COEF_CONTEXTS] [MAX_ENTROPY_TOKENS];\n\n");
fprintf(f, "const int default_contexts[BLOCK_TYPES] [COEF_BANDS] [PREV_COEF_CONTEXTS] [MAX_ENTROPY_TOKENS] = {");
# define Comma( X) (X? ",":"")
type = 0;
do
{
fprintf(f, "%s\n { /* block Type %d */", Comma(type), type);
band = 0;
do
{
fprintf(f, "%s\n { /* Coeff Band %d */", Comma(band), band);
pt = 0;
do
{
fprintf(f, "%s\n {", Comma(pt));
t = 0;
do
{
const INT64 x = context_counters [type] [band] [pt] [t];
const int y = (int) x;
assert(x == (INT64) y); /* no overflow handling yet */
fprintf(f, "%s %d", Comma(t), y);
}
while (++t < MAX_ENTROPY_TOKENS);
fprintf(f, "}");
}
while (++pt < PREV_COEF_CONTEXTS);
fprintf(f, "\n }");
}
while (++band < COEF_BANDS);
fprintf(f, "\n }");
}
while (++type < BLOCK_TYPES);
fprintf(f, "int Contexts_8x8[BLOCK_TYPES] [COEF_BANDS] [PREV_COEF_CONTEXTS] [MAX_ENTROPY_TOKENS];\n\n");
fprintf(f, "const int default_contexts_8x8[BLOCK_TYPES] [COEF_BANDS] [PREV_COEF_CONTEXTS] [MAX_ENTROPY_TOKENS] = {");
type = 0;
do
{
fprintf(f, "%s\n { /* block Type %d */", Comma(type), type);
band = 0;
do
{
fprintf(f, "%s\n { /* Coeff Band %d */", Comma(band), band);
pt = 0;
do
{
fprintf(f, "%s\n {", Comma(pt));
t = 0;
do
{
const INT64 x = context_counters [type] [band] [pt] [t];
const int y = (int) x;
assert(x == (INT64) y); /* no overflow handling yet */
fprintf(f, "%s %d", Comma(t), y);
}
while (++t < MAX_ENTROPY_TOKENS);
fprintf(f, "}");
}
while (++pt < PREV_COEF_CONTEXTS);
fprintf(f, "\n }");
}
while (++band < COEF_BANDS);
fprintf(f, "\n }");
}
while (++type < BLOCK_TYPES);
fprintf(f, "\n};\n");
fclose(f);
}
#endif
void vp8_tokenize_initialize()
{
fill_value_tokens();
}
static __inline void stuff2nd_order_b_8x8
(
const BLOCKD *const b,
TOKENEXTRA **tp,
const int type, /* which plane: 0=Y no DC, 1=Y2, 2=UV, 3=Y with DC */
const FRAME_TYPE frametype,
ENTROPY_CONTEXT *a,
ENTROPY_CONTEXT *l,
VP8_COMP *cpi
)
{
int pt; /* near block/prev token context index */
TOKENEXTRA *t = *tp; /* store tokens starting here */
VP8_COMBINEENTROPYCONTEXTS(pt, *a, *l);
(void) frametype;
(void) type;
(void) b;
t->Token = DCT_EOB_TOKEN;
t->context_tree = cpi->common.fc.coef_probs_8x8 [1] [0] [pt];
//t->section = 11;
t->skip_eob_node = 0;
++t;
*tp = t;
++cpi->coef_counts_8x8 [1] [0] [pt] [DCT_EOB_TOKEN];
pt = 0;
*a = *l = pt;
}
static __inline void stuff1st_order_b_8x8
(
const BLOCKD *const b,
TOKENEXTRA **tp,
const int type, /* which plane: 0=Y no DC, 1=Y2, 2=UV, 3=Y with DC */
const FRAME_TYPE frametype,
ENTROPY_CONTEXT *a,
ENTROPY_CONTEXT *l,
VP8_COMP *cpi
)
{
int pt; /* near block/prev token context index */
TOKENEXTRA *t = *tp; /* store tokens starting here */
VP8_COMBINEENTROPYCONTEXTS(pt, *a, *l);
(void) frametype;
(void) type;
(void) b;
t->Token = DCT_EOB_TOKEN;
t->context_tree = cpi->common.fc.coef_probs_8x8 [0] [1] [pt];
//t->section = 8;
t->skip_eob_node = 0;
++t;
*tp = t;
++cpi->coef_counts_8x8 [0] [1] [pt] [DCT_EOB_TOKEN];
pt = 0; /* 0 <-> all coeff data is zero */
*a = *l = pt;
}
static __inline
void stuff1st_order_buv_8x8
(
const BLOCKD *const b,
TOKENEXTRA **tp,
const int type, /* which plane: 0=Y no DC, 1=Y2, 2=UV, 3=Y with DC */
const FRAME_TYPE frametype,
ENTROPY_CONTEXT *a,
ENTROPY_CONTEXT *l,
VP8_COMP *cpi
)
{
int pt; /* near block/prev token context index */
TOKENEXTRA *t = *tp; /* store tokens starting here */
VP8_COMBINEENTROPYCONTEXTS(pt, *a, *l);
(void) frametype;
(void) type;
(void) b;
t->Token = DCT_EOB_TOKEN;
t->context_tree = cpi->common.fc.coef_probs_8x8 [2] [0] [pt];
//t->section = 13;
t->skip_eob_node = 0;
++t;
*tp = t;
++cpi->coef_counts_8x8[2] [0] [pt] [DCT_EOB_TOKEN];
pt = 0; /* 0 <-> all coeff data is zero */
*a = *l = pt;
}
void vp8_stuff_mb_8x8(VP8_COMP *cpi, MACROBLOCKD *x, TOKENEXTRA **t)
{
ENTROPY_CONTEXT * A = (ENTROPY_CONTEXT *)x->above_context;
ENTROPY_CONTEXT * L = (ENTROPY_CONTEXT *)x->left_context;
int plane_type;
int b;
stuff2nd_order_b_8x8(x->block + 24, t, 1, x->frame_type,
A + vp8_block2above_8x8[24],
L + vp8_block2left_8x8[24], cpi);
plane_type = 0;
for (b = 0; b < 16; b+=4)
{
stuff1st_order_b_8x8(x->block + b, t, plane_type, x->frame_type,
A + vp8_block2above_8x8[b],
L + vp8_block2left_8x8[b],
cpi);
*(A + vp8_block2above_8x8[b] + 1) = *(A + vp8_block2above_8x8[b]);
*(L + vp8_block2left_8x8[b] + 1) = *(L + vp8_block2left_8x8[b] );
}
for (b = 16; b < 24; b+=4)
{
stuff1st_order_buv_8x8(x->block + b, t, 2, x->frame_type,
A + vp8_block2above[b],
L + vp8_block2left[b],
cpi);
*(A + vp8_block2above_8x8[b]+1) = *(A + vp8_block2above_8x8[b]);
*(L + vp8_block2left_8x8[b]+1 ) = *(L + vp8_block2left_8x8[b]);
}
}
static __inline void stuff2nd_order_b
(
TOKENEXTRA **tp,
ENTROPY_CONTEXT *a,
ENTROPY_CONTEXT *l,
VP8_COMP *cpi
)
{
int pt; /* near block/prev token context index */
TOKENEXTRA *t = *tp; /* store tokens starting here */
VP8_COMBINEENTROPYCONTEXTS(pt, *a, *l);
t->Token = DCT_EOB_TOKEN;
t->context_tree = cpi->common.fc.coef_probs [1] [0] [pt];
t->skip_eob_node = 0;
++t;
*tp = t;
++cpi->coef_counts [1] [0] [pt] [DCT_EOB_TOKEN];
pt = 0;
*a = *l = pt;
}
static __inline void stuff1st_order_b
(
TOKENEXTRA **tp,
ENTROPY_CONTEXT *a,
ENTROPY_CONTEXT *l,
VP8_COMP *cpi
)
{
int pt; /* near block/prev token context index */
TOKENEXTRA *t = *tp; /* store tokens starting here */
VP8_COMBINEENTROPYCONTEXTS(pt, *a, *l);
t->Token = DCT_EOB_TOKEN;
t->context_tree = cpi->common.fc.coef_probs [0] [1] [pt];
t->skip_eob_node = 0;
++t;
*tp = t;
++cpi->coef_counts [0] [1] [pt] [DCT_EOB_TOKEN];
pt = 0; /* 0 <-> all coeff data is zero */
*a = *l = pt;
}
static __inline
void stuff1st_order_buv
(
TOKENEXTRA **tp,
ENTROPY_CONTEXT *a,
ENTROPY_CONTEXT *l,
VP8_COMP *cpi
)
{
int pt; /* near block/prev token context index */
TOKENEXTRA *t = *tp; /* store tokens starting here */
VP8_COMBINEENTROPYCONTEXTS(pt, *a, *l);
t->Token = DCT_EOB_TOKEN;
t->context_tree = cpi->common.fc.coef_probs [2] [0] [pt];
t->skip_eob_node = 0;
++t;
*tp = t;
++cpi->coef_counts[2] [0] [pt] [DCT_EOB_TOKEN];
pt = 0; /* 0 <-> all coeff data is zero */
*a = *l = pt;
}
void vp8_stuff_mb(VP8_COMP *cpi, MACROBLOCKD *x, TOKENEXTRA **t)
{
ENTROPY_CONTEXT * A = (ENTROPY_CONTEXT *)x->above_context;
ENTROPY_CONTEXT * L = (ENTROPY_CONTEXT *)x->left_context;
int plane_type;
int b;
stuff2nd_order_b(t,
A + vp8_block2above[24], L + vp8_block2left[24], cpi);
plane_type = 0;
for (b = 0; b < 16; b++)
stuff1st_order_b(t,
A + vp8_block2above[b],
L + vp8_block2left[b], cpi);
for (b = 16; b < 24; b++)
stuff1st_order_buv(t,
A + vp8_block2above[b],
L + vp8_block2left[b], cpi);
}
void vp8_fix_contexts(MACROBLOCKD *x)
{
/* Clear entropy contexts for Y2 blocks */
if (x->mode_info_context->mbmi.mode != B_PRED
&& x->mode_info_context->mbmi.mode != I8X8_PRED
&& x->mode_info_context->mbmi.mode != SPLITMV)
{
vpx_memset(x->above_context, 0, sizeof(ENTROPY_CONTEXT_PLANES));
vpx_memset(x->left_context, 0, sizeof(ENTROPY_CONTEXT_PLANES));
}
else
{
vpx_memset(x->above_context, 0, sizeof(ENTROPY_CONTEXT_PLANES)-1);
vpx_memset(x->left_context, 0, sizeof(ENTROPY_CONTEXT_PLANES)-1);
}
}
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