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vpx/vp9/encoder/vp9_tokenize.c

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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 "vp9/encoder/vp9_onyx_int.h"
#include "vp9/encoder/vp9_tokenize.h"
#include "vpx_mem/vpx_mem.h"
#include "vp9/common/vp9_pred_common.h"
#include "vp9/common/vp9_seg_common.h"
#include "vp9/common/vp9_entropy.h"
/* Global event counters used for accumulating statistics across several
compressions, then generating vp9_context.c = initial stats. */
#ifdef ENTROPY_STATS
vp9_coeff_accum context_counters_4x4[BLOCK_TYPES];
vp9_coeff_accum context_counters_8x8[BLOCK_TYPES];
vp9_coeff_accum context_counters_16x16[BLOCK_TYPES];
vp9_coeff_accum context_counters_32x32[BLOCK_TYPES];
extern vp9_coeff_stats tree_update_hist_4x4[BLOCK_TYPES];
extern vp9_coeff_stats tree_update_hist_8x8[BLOCK_TYPES];
extern vp9_coeff_stats tree_update_hist_16x16[BLOCK_TYPES];
extern vp9_coeff_stats tree_update_hist_32x32[BLOCK_TYPES];
#endif /* ENTROPY_STATS */
#if CONFIG_CODE_NONZEROCOUNT
#ifdef NZC_STATS
unsigned int nzc_counts_4x4[MAX_NZC_CONTEXTS][REF_TYPES][BLOCK_TYPES]
[NZC4X4_TOKENS];
unsigned int nzc_counts_8x8[MAX_NZC_CONTEXTS][REF_TYPES][BLOCK_TYPES]
[NZC8X8_TOKENS];
unsigned int nzc_counts_16x16[MAX_NZC_CONTEXTS][REF_TYPES][BLOCK_TYPES]
[NZC16X16_TOKENS];
unsigned int nzc_counts_32x32[MAX_NZC_CONTEXTS][REF_TYPES][BLOCK_TYPES]
[NZC32X32_TOKENS];
unsigned int nzc_pcat_counts[MAX_NZC_CONTEXTS][NZC_TOKENS_EXTRA]
[NZC_BITS_EXTRA][2];
#endif
#endif
static TOKENVALUE dct_value_tokens[DCT_MAX_VALUE * 2];
const TOKENVALUE *vp9_dct_value_tokens_ptr;
static int dct_value_cost[DCT_MAX_VALUE * 2];
const int *vp9_dct_value_cost_ptr;
static void fill_value_tokens() {
TOKENVALUE *const t = dct_value_tokens + DCT_MAX_VALUE;
vp9_extra_bit_struct *const e = vp9_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;
vp9_extra_bit_struct *p = vp9_extra_bits + t[i].Token;
if (p->base_val) {
const int extra = t[i].Extra;
const int Length = p->Len;
if (Length)
cost += treed_cost(p->tree, p->prob, extra >> 1, Length);
cost += vp9_cost_bit(vp9_prob_half, extra & 1); /* sign */
dct_value_cost[i + DCT_MAX_VALUE] = cost;
}
}
} while (++i < DCT_MAX_VALUE);
vp9_dct_value_tokens_ptr = dct_value_tokens + DCT_MAX_VALUE;
vp9_dct_value_cost_ptr = dct_value_cost + DCT_MAX_VALUE;
}
extern const int *vp9_get_coef_neighbors_handle(const int *scan, int *pad);
static void tokenize_b(VP9_COMP *cpi,
MACROBLOCKD *xd,
const int ib,
TOKENEXTRA **tp,
PLANE_TYPE type,
TX_SIZE tx_size,
int dry_run) {
MB_MODE_INFO *mbmi = &xd->mode_info_context->mbmi;
int pt; /* near block/prev token context index */
int c = 0;
const int eob = xd->eobs[ib]; /* one beyond last nonzero coeff */
TOKENEXTRA *t = *tp; /* store tokens starting here */
int16_t *qcoeff_ptr = xd->qcoeff + 16 * ib;
int seg_eob, default_eob, pad;
const int segment_id = mbmi->segment_id;
const BLOCK_SIZE_TYPE sb_type = mbmi->sb_type;
const int *scan, *nb;
vp9_coeff_count *counts;
vp9_coeff_probs *probs;
const int ref = mbmi->ref_frame != INTRA_FRAME;
ENTROPY_CONTEXT *a, *l, *a1, *l1, *a2, *l2, *a3, *l3, a_ec, l_ec;
uint8_t token_cache[1024];
#if CONFIG_CODE_NONZEROCOUNT
const int nzc_used = get_nzc_used(tx_size);
int zerosleft = 0, nzc = 0;
if (eob == 0)
assert(xd->nzcs[ib] == 0);
#endif
if (sb_type == BLOCK_SIZE_SB64X64) {
a = (ENTROPY_CONTEXT *)xd->above_context +
vp9_block2above_sb64[tx_size][ib];
l = (ENTROPY_CONTEXT *)xd->left_context + vp9_block2left_sb64[tx_size][ib];
a1 = a + sizeof(ENTROPY_CONTEXT_PLANES) / sizeof(ENTROPY_CONTEXT);
l1 = l + sizeof(ENTROPY_CONTEXT_PLANES) / sizeof(ENTROPY_CONTEXT);
a2 = a1 + sizeof(ENTROPY_CONTEXT_PLANES) / sizeof(ENTROPY_CONTEXT);
l2 = l1 + sizeof(ENTROPY_CONTEXT_PLANES) / sizeof(ENTROPY_CONTEXT);
a3 = a2 + sizeof(ENTROPY_CONTEXT_PLANES) / sizeof(ENTROPY_CONTEXT);
l3 = l2 + sizeof(ENTROPY_CONTEXT_PLANES) / sizeof(ENTROPY_CONTEXT);
} else if (sb_type == BLOCK_SIZE_SB32X32) {
a = (ENTROPY_CONTEXT *)xd->above_context + vp9_block2above_sb[tx_size][ib];
l = (ENTROPY_CONTEXT *)xd->left_context + vp9_block2left_sb[tx_size][ib];
a1 = a + sizeof(ENTROPY_CONTEXT_PLANES) / sizeof(ENTROPY_CONTEXT);
l1 = l + sizeof(ENTROPY_CONTEXT_PLANES) / sizeof(ENTROPY_CONTEXT);
a2 = a3 = l2 = l3 = NULL;
} else {
a = (ENTROPY_CONTEXT *)xd->above_context + vp9_block2above[tx_size][ib];
l = (ENTROPY_CONTEXT *)xd->left_context + vp9_block2left[tx_size][ib];
a1 = l1 = a2 = l2 = a3 = l3 = NULL;
}
switch (tx_size) {
default:
case TX_4X4: {
const TX_TYPE tx_type = (type == PLANE_TYPE_Y_WITH_DC) ?
get_tx_type_4x4(xd, ib) : DCT_DCT;
a_ec = *a;
l_ec = *l;
seg_eob = 16;
scan = vp9_default_zig_zag1d_4x4;
if (tx_type != DCT_DCT) {
if (tx_type == ADST_DCT) {
scan = vp9_row_scan_4x4;
} else if (tx_type == DCT_ADST) {
scan = vp9_col_scan_4x4;
}
}
counts = cpi->coef_counts_4x4;
probs = cpi->common.fc.coef_probs_4x4;
break;
}
case TX_8X8: {
const int sz = 3 + sb_type, x = ib & ((1 << sz) - 1), y = ib - x;
const TX_TYPE tx_type = (type == PLANE_TYPE_Y_WITH_DC) ?
get_tx_type_8x8(xd, y + (x >> 1)) : DCT_DCT;
a_ec = (a[0] + a[1]) != 0;
l_ec = (l[0] + l[1]) != 0;
seg_eob = 64;
scan = vp9_default_zig_zag1d_8x8;
if (tx_type != DCT_DCT) {
if (tx_type == ADST_DCT) {
scan = vp9_row_scan_8x8;
} else if (tx_type == DCT_ADST) {
scan = vp9_col_scan_8x8;
}
}
counts = cpi->coef_counts_8x8;
probs = cpi->common.fc.coef_probs_8x8;
break;
}
case TX_16X16: {
const int sz = 4 + sb_type, x = ib & ((1 << sz) - 1), y = ib - x;
const TX_TYPE tx_type = (type == PLANE_TYPE_Y_WITH_DC) ?
get_tx_type_16x16(xd, y + (x >> 2)) : DCT_DCT;
if (type != PLANE_TYPE_UV) {
a_ec = (a[0] + a[1] + a[2] + a[3]) != 0;
l_ec = (l[0] + l[1] + l[2] + l[3]) != 0;
} else {
a_ec = (a[0] + a[1] + a1[0] + a1[1]) != 0;
l_ec = (l[0] + l[1] + l1[0] + l1[1]) != 0;
}
seg_eob = 256;
scan = vp9_default_zig_zag1d_16x16;
if (tx_type != DCT_DCT) {
if (tx_type == ADST_DCT) {
scan = vp9_row_scan_16x16;
} else if (tx_type == DCT_ADST) {
scan = vp9_col_scan_16x16;
}
}
counts = cpi->coef_counts_16x16;
probs = cpi->common.fc.coef_probs_16x16;
break;
}
case TX_32X32:
if (type != PLANE_TYPE_UV) {
a_ec = (a[0] + a[1] + a[2] + a[3] +
a1[0] + a1[1] + a1[2] + a1[3]) != 0;
l_ec = (l[0] + l[1] + l[2] + l[3] +
l1[0] + l1[1] + l1[2] + l1[3]) != 0;
} else {
a_ec = (a[0] + a[1] + a1[0] + a1[1] +
a2[0] + a2[1] + a3[0] + a3[1]) != 0;
l_ec = (l[0] + l[1] + l1[0] + l1[1] +
l2[0] + l2[1] + l3[0] + l3[1]) != 0;
}
seg_eob = 1024;
scan = vp9_default_zig_zag1d_32x32;
counts = cpi->coef_counts_32x32;
probs = cpi->common.fc.coef_probs_32x32;
break;
}
VP9_COMBINEENTROPYCONTEXTS(pt, a_ec, l_ec);
nb = vp9_get_coef_neighbors_handle(scan, &pad);
default_eob = seg_eob;
if (vp9_segfeature_active(xd, segment_id, SEG_LVL_SKIP))
seg_eob = 0;
do {
const int band = get_coef_band(scan, tx_size, c);
int token;
int v = 0;
#if CONFIG_CODE_NONZEROCOUNT
if (nzc_used)
zerosleft = seg_eob - xd->nzcs[ib] - c + nzc;
#endif
if (c < eob) {
const int rc = scan[c];
v = qcoeff_ptr[rc];
assert(-DCT_MAX_VALUE <= v && v < DCT_MAX_VALUE);
t->Extra = vp9_dct_value_tokens_ptr[v].Extra;
token = vp9_dct_value_tokens_ptr[v].Token;
} else {
#if CONFIG_CODE_NONZEROCOUNT
if (nzc_used)
break;
else
#endif
token = DCT_EOB_TOKEN;
}
t->Token = token;
t->context_tree = probs[type][ref][band][pt];
#if CONFIG_CODE_NONZEROCOUNT
// Skip zero node if there are no zeros left
if (nzc_used)
t->skip_eob_node = 1 + (zerosleft == 0);
else
#endif
t->skip_eob_node = (c > 0) && (token_cache[c - 1] == 0);
assert(vp9_coef_encodings[t->Token].Len - t->skip_eob_node > 0);
if (!dry_run) {
++counts[type][ref][band][pt][token];
if (!t->skip_eob_node)
++cpi->common.fc.eob_branch_counts[tx_size][type][ref][band][pt];
}
#if CONFIG_CODE_NONZEROCOUNT
nzc += (v != 0);
#endif
token_cache[c] = token;
pt = vp9_get_coef_context(scan, nb, pad, token_cache, c + 1, default_eob);
++t;
} while (c < eob && ++c < seg_eob);
#if CONFIG_CODE_NONZEROCOUNT
assert(nzc == xd->nzcs[ib]);
#endif
*tp = t;
a_ec = l_ec = (c > 0); /* 0 <-> all coeff data is zero */
a[0] = a_ec;
l[0] = l_ec;
if (tx_size == TX_8X8) {
a[1] = a_ec;
l[1] = l_ec;
} else if (tx_size == TX_16X16) {
if (type != PLANE_TYPE_UV) {
a[1] = a[2] = a[3] = a_ec;
l[1] = l[2] = l[3] = l_ec;
} else {
a1[0] = a1[1] = a[1] = a_ec;
l1[0] = l1[1] = l[1] = l_ec;
}
} else if (tx_size == TX_32X32) {
if (type != PLANE_TYPE_UV) {
a[1] = a[2] = a[3] = a_ec;
l[1] = l[2] = l[3] = l_ec;
a1[0] = a1[1] = a1[2] = a1[3] = a_ec;
l1[0] = l1[1] = l1[2] = l1[3] = l_ec;
} else {
a[1] = a1[0] = a1[1] = a_ec;
l[1] = l1[0] = l1[1] = l_ec;
a2[0] = a2[1] = a3[0] = a3[1] = a_ec;
l2[0] = l2[1] = l3[0] = l3[1] = l_ec;
}
}
}
int vp9_mby_is_skippable_4x4(MACROBLOCKD *xd) {
int skip = 1;
int i = 0;
for (i = 0; i < 16; i++)
skip &= (!xd->eobs[i]);
return skip;
}
int vp9_mbuv_is_skippable_4x4(MACROBLOCKD *xd) {
int skip = 1;
int i;
for (i = 16; i < 24; i++)
skip &= (!xd->eobs[i]);
return skip;
}
static int mb_is_skippable_4x4(MACROBLOCKD *xd) {
return (vp9_mby_is_skippable_4x4(xd) &
vp9_mbuv_is_skippable_4x4(xd));
}
int vp9_mby_is_skippable_8x8(MACROBLOCKD *xd) {
int skip = 1;
int i = 0;
for (i = 0; i < 16; i += 4)
skip &= (!xd->eobs[i]);
return skip;
}
int vp9_mbuv_is_skippable_8x8(MACROBLOCKD *xd) {
return (!xd->eobs[16]) & (!xd->eobs[20]);
}
static int mb_is_skippable_8x8(MACROBLOCKD *xd) {
return (vp9_mby_is_skippable_8x8(xd) &
vp9_mbuv_is_skippable_8x8(xd));
}
static int mb_is_skippable_8x8_4x4uv(MACROBLOCKD *xd) {
return (vp9_mby_is_skippable_8x8(xd) &
vp9_mbuv_is_skippable_4x4(xd));
}
int vp9_mby_is_skippable_16x16(MACROBLOCKD *xd) {
return (!xd->eobs[0]);
}
static int mb_is_skippable_16x16(MACROBLOCKD *xd) {
return (vp9_mby_is_skippable_16x16(xd) & vp9_mbuv_is_skippable_8x8(xd));
}
int vp9_sby_is_skippable_32x32(MACROBLOCKD *xd) {
return (!xd->eobs[0]);
}
int vp9_sbuv_is_skippable_16x16(MACROBLOCKD *xd) {
return (!xd->eobs[64]) & (!xd->eobs[80]);
}
static int sb_is_skippable_32x32(MACROBLOCKD *xd) {
return vp9_sby_is_skippable_32x32(xd) &&
vp9_sbuv_is_skippable_16x16(xd);
}
int vp9_sby_is_skippable_16x16(MACROBLOCKD *xd) {
int skip = 1;
int i = 0;
for (i = 0; i < 64; i += 16)
skip &= (!xd->eobs[i]);
return skip;
}
static int sb_is_skippable_16x16(MACROBLOCKD *xd) {
return vp9_sby_is_skippable_16x16(xd) & vp9_sbuv_is_skippable_16x16(xd);
}
int vp9_sby_is_skippable_8x8(MACROBLOCKD *xd) {
int skip = 1;
int i = 0;
for (i = 0; i < 64; i += 4)
skip &= (!xd->eobs[i]);
return skip;
}
int vp9_sbuv_is_skippable_8x8(MACROBLOCKD *xd) {
int skip = 1;
int i = 0;
for (i = 64; i < 96; i += 4)
skip &= (!xd->eobs[i]);
return skip;
}
static int sb_is_skippable_8x8(MACROBLOCKD *xd) {
return vp9_sby_is_skippable_8x8(xd) & vp9_sbuv_is_skippable_8x8(xd);
}
int vp9_sby_is_skippable_4x4(MACROBLOCKD *xd) {
int skip = 1;
int i = 0;
for (i = 0; i < 64; i++)
skip &= (!xd->eobs[i]);
return skip;
}
int vp9_sbuv_is_skippable_4x4(MACROBLOCKD *xd) {
int skip = 1;
int i = 0;
for (i = 64; i < 96; i++)
skip &= (!xd->eobs[i]);
return skip;
}
static int sb_is_skippable_4x4(MACROBLOCKD *xd) {
return vp9_sby_is_skippable_4x4(xd) & vp9_sbuv_is_skippable_4x4(xd);
}
void vp9_tokenize_sb(VP9_COMP *cpi,
MACROBLOCKD *xd,
TOKENEXTRA **t,
int dry_run) {
VP9_COMMON * const cm = &cpi->common;
MB_MODE_INFO * const mbmi = &xd->mode_info_context->mbmi;
TOKENEXTRA *t_backup = *t;
const int mb_skip_context = vp9_get_pred_context(cm, xd, PRED_MBSKIP);
const int segment_id = mbmi->segment_id;
const int skip_inc = !vp9_segfeature_active(xd, segment_id, SEG_LVL_SKIP);
int b;
switch (mbmi->txfm_size) {
case TX_32X32:
mbmi->mb_skip_coeff = sb_is_skippable_32x32(xd);
break;
case TX_16X16:
mbmi->mb_skip_coeff = sb_is_skippable_16x16(xd);
break;
case TX_8X8:
mbmi->mb_skip_coeff = sb_is_skippable_8x8(xd);
break;
case TX_4X4:
mbmi->mb_skip_coeff = sb_is_skippable_4x4(xd);
break;
default: assert(0);
}
if (mbmi->mb_skip_coeff) {
if (!dry_run)
cpi->skip_true_count[mb_skip_context] += skip_inc;
if (!cm->mb_no_coeff_skip) {
vp9_stuff_sb(cpi, xd, t, dry_run);
} else {
vp9_reset_sb_tokens_context(xd);
}
if (dry_run)
*t = t_backup;
return;
}
if (!dry_run)
cpi->skip_false_count[mb_skip_context] += skip_inc;
switch (mbmi->txfm_size) {
case TX_32X32:
tokenize_b(cpi, xd, 0, t, PLANE_TYPE_Y_WITH_DC,
TX_32X32, dry_run);
for (b = 64; b < 96; b += 16)
tokenize_b(cpi, xd, b, t, PLANE_TYPE_UV,
TX_16X16, dry_run);
break;
case TX_16X16:
for (b = 0; b < 64; b += 16)
tokenize_b(cpi, xd, b, t, PLANE_TYPE_Y_WITH_DC,
TX_16X16, dry_run);
for (b = 64; b < 96; b += 16)
tokenize_b(cpi, xd, b, t, PLANE_TYPE_UV,
TX_16X16, dry_run);
break;
case TX_8X8:
for (b = 0; b < 64; b += 4)
tokenize_b(cpi, xd, b, t, PLANE_TYPE_Y_WITH_DC,
TX_8X8, dry_run);
for (b = 64; b < 96; b += 4)
tokenize_b(cpi, xd, b, t, PLANE_TYPE_UV,
TX_8X8, dry_run);
break;
case TX_4X4:
for (b = 0; b < 64; b++)
tokenize_b(cpi, xd, b, t, PLANE_TYPE_Y_WITH_DC,
TX_4X4, dry_run);
for (b = 64; b < 96; b++)
tokenize_b(cpi, xd, b, t, PLANE_TYPE_UV,
TX_4X4, dry_run);
break;
default: assert(0);
}
if (dry_run)
*t = t_backup;
}
int vp9_sb64y_is_skippable_32x32(MACROBLOCKD *xd) {
int skip = 1;
int i = 0;
for (i = 0; i < 256; i += 64)
skip &= (!xd->eobs[i]);
return skip;
}
int vp9_sb64uv_is_skippable_32x32(MACROBLOCKD *xd) {
return (!xd->eobs[256]) & (!xd->eobs[320]);
}
static int sb64_is_skippable_32x32(MACROBLOCKD *xd) {
return vp9_sb64y_is_skippable_32x32(xd) & vp9_sb64uv_is_skippable_32x32(xd);
}
int vp9_sb64y_is_skippable_16x16(MACROBLOCKD *xd) {
int skip = 1;
int i = 0;
for (i = 0; i < 256; i += 16)
skip &= (!xd->eobs[i]);
return skip;
}
int vp9_sb64uv_is_skippable_16x16(MACROBLOCKD *xd) {
int skip = 1;
int i = 0;
for (i = 256; i < 384; i += 16)
skip &= (!xd->eobs[i]);
return skip;
}
static int sb64_is_skippable_16x16(MACROBLOCKD *xd) {
return vp9_sb64y_is_skippable_16x16(xd) & vp9_sb64uv_is_skippable_16x16(xd);
}
int vp9_sb64y_is_skippable_8x8(MACROBLOCKD *xd) {
int skip = 1;
int i = 0;
for (i = 0; i < 256; i += 4)
skip &= (!xd->eobs[i]);
return skip;
}
int vp9_sb64uv_is_skippable_8x8(MACROBLOCKD *xd) {
int skip = 1;
int i = 0;
for (i = 256; i < 384; i += 4)
skip &= (!xd->eobs[i]);
return skip;
}
static int sb64_is_skippable_8x8(MACROBLOCKD *xd) {
return vp9_sb64y_is_skippable_8x8(xd) & vp9_sb64uv_is_skippable_8x8(xd);
}
int vp9_sb64y_is_skippable_4x4(MACROBLOCKD *xd) {
int skip = 1;
int i = 0;
for (i = 0; i < 256; i++)
skip &= (!xd->eobs[i]);
return skip;
}
int vp9_sb64uv_is_skippable_4x4(MACROBLOCKD *xd) {
int skip = 1;
int i = 0;
for (i = 256; i < 384; i++)
skip &= (!xd->eobs[i]);
return skip;
}
static int sb64_is_skippable_4x4(MACROBLOCKD *xd) {
return vp9_sb64y_is_skippable_4x4(xd) & vp9_sb64uv_is_skippable_4x4(xd);
}
void vp9_tokenize_sb64(VP9_COMP *cpi,
MACROBLOCKD *xd,
TOKENEXTRA **t,
int dry_run) {
VP9_COMMON * const cm = &cpi->common;
MB_MODE_INFO * const mbmi = &xd->mode_info_context->mbmi;
TOKENEXTRA *t_backup = *t;
const int mb_skip_context = vp9_get_pred_context(cm, xd, PRED_MBSKIP);
const int segment_id = mbmi->segment_id;
const int skip_inc = !vp9_segfeature_active(xd, segment_id, SEG_LVL_SKIP);
int b;
switch (mbmi->txfm_size) {
case TX_32X32:
mbmi->mb_skip_coeff = sb64_is_skippable_32x32(xd);
break;
case TX_16X16:
mbmi->mb_skip_coeff = sb64_is_skippable_16x16(xd);
break;
case TX_8X8:
mbmi->mb_skip_coeff = sb64_is_skippable_8x8(xd);
break;
case TX_4X4:
mbmi->mb_skip_coeff = sb64_is_skippable_4x4(xd);
break;
default: assert(0);
}
if (mbmi->mb_skip_coeff) {
if (!dry_run)
cpi->skip_true_count[mb_skip_context] += skip_inc;
if (!cm->mb_no_coeff_skip) {
vp9_stuff_sb64(cpi, xd, t, dry_run);
} else {
vp9_reset_sb64_tokens_context(xd);
}
if (dry_run)
*t = t_backup;
return;
}
if (!dry_run)
cpi->skip_false_count[mb_skip_context] += skip_inc;
switch (mbmi->txfm_size) {
case TX_32X32:
for (b = 0; b < 256; b += 64)
tokenize_b(cpi, xd, b, t, PLANE_TYPE_Y_WITH_DC,
TX_32X32, dry_run);
for (b = 256; b < 384; b += 64)
tokenize_b(cpi, xd, b, t, PLANE_TYPE_UV,
TX_32X32, dry_run);
break;
case TX_16X16:
for (b = 0; b < 256; b += 16)
tokenize_b(cpi, xd, b, t, PLANE_TYPE_Y_WITH_DC,
TX_16X16, dry_run);
for (b = 256; b < 384; b += 16)
tokenize_b(cpi, xd, b, t, PLANE_TYPE_UV,
TX_16X16, dry_run);
break;
case TX_8X8:
for (b = 0; b < 256; b += 4)
tokenize_b(cpi, xd, b, t, PLANE_TYPE_Y_WITH_DC,
TX_8X8, dry_run);
for (b = 256; b < 384; b += 4)
tokenize_b(cpi, xd, b, t, PLANE_TYPE_UV,
TX_8X8, dry_run);
break;
case TX_4X4:
for (b = 0; b < 256; b++)
tokenize_b(cpi, xd, b, t, PLANE_TYPE_Y_WITH_DC,
TX_4X4, dry_run);
for (b = 256; b < 384; b++)
tokenize_b(cpi, xd, b, t, PLANE_TYPE_UV,
TX_4X4, dry_run);
break;
default: assert(0);
}
if (dry_run)
*t = t_backup;
}
void vp9_tokenize_mb(VP9_COMP *cpi,
MACROBLOCKD *xd,
TOKENEXTRA **t,
int dry_run) {
int b;
int tx_size = xd->mode_info_context->mbmi.txfm_size;
int mb_skip_context = vp9_get_pred_context(&cpi->common, xd, PRED_MBSKIP);
TOKENEXTRA *t_backup = *t;
// 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 = xd->mode_info_context->mbmi.segment_id;
if (!vp9_segfeature_active(xd, segment_id, SEG_LVL_SKIP)) {
skip_inc = 1;
} else
skip_inc = 0;
switch (tx_size) {
case TX_16X16:
xd->mode_info_context->mbmi.mb_skip_coeff = mb_is_skippable_16x16(xd);
break;
case TX_8X8:
if (xd->mode_info_context->mbmi.mode == I8X8_PRED ||
xd->mode_info_context->mbmi.mode == SPLITMV)
xd->mode_info_context->mbmi.mb_skip_coeff =
mb_is_skippable_8x8_4x4uv(xd);
else
xd->mode_info_context->mbmi.mb_skip_coeff =
mb_is_skippable_8x8(xd);
break;
default:
xd->mode_info_context->mbmi.mb_skip_coeff =
mb_is_skippable_4x4(xd);
break;
}
if (xd->mode_info_context->mbmi.mb_skip_coeff) {
if (!dry_run)
cpi->skip_true_count[mb_skip_context] += skip_inc;
if (!cpi->common.mb_no_coeff_skip) {
vp9_stuff_mb(cpi, xd, t, dry_run);
} else {
vp9_reset_mb_tokens_context(xd);
}
if (dry_run)
*t = t_backup;
return;
}
if (!dry_run)
cpi->skip_false_count[mb_skip_context] += skip_inc;
if (tx_size == TX_16X16) {
tokenize_b(cpi, xd, 0, t, PLANE_TYPE_Y_WITH_DC, TX_16X16, dry_run);
for (b = 16; b < 24; b += 4) {
tokenize_b(cpi, xd, b, t, PLANE_TYPE_UV, TX_8X8, dry_run);
}
} else if (tx_size == TX_8X8) {
for (b = 0; b < 16; b += 4) {
tokenize_b(cpi, xd, b, t, PLANE_TYPE_Y_WITH_DC, TX_8X8, dry_run);
}
if (xd->mode_info_context->mbmi.mode == I8X8_PRED ||
xd->mode_info_context->mbmi.mode == SPLITMV) {
for (b = 16; b < 24; b++) {
tokenize_b(cpi, xd, b, t, PLANE_TYPE_UV, TX_4X4, dry_run);
}
} else {
for (b = 16; b < 24; b += 4) {
tokenize_b(cpi, xd, b, t, PLANE_TYPE_UV, TX_8X8, dry_run);
}
}
} else {
for (b = 0; b < 16; b++)
tokenize_b(cpi, xd, b, t, PLANE_TYPE_Y_WITH_DC, TX_4X4, dry_run);
for (b = 16; b < 24; b++)
tokenize_b(cpi, xd, b, t, PLANE_TYPE_UV, TX_4X4, dry_run);
}
if (dry_run)
*t = t_backup;
}
#ifdef ENTROPY_STATS
void init_context_counters(void) {
FILE *f = fopen("context.bin", "rb");
if (!f) {
vpx_memset(context_counters_4x4, 0, sizeof(context_counters_4x4));
vpx_memset(context_counters_8x8, 0, sizeof(context_counters_8x8));
vpx_memset(context_counters_16x16, 0, sizeof(context_counters_16x16));
vpx_memset(context_counters_32x32, 0, sizeof(context_counters_32x32));
} else {
fread(context_counters_4x4, sizeof(context_counters_4x4), 1, f);
fread(context_counters_8x8, sizeof(context_counters_8x8), 1, f);
fread(context_counters_16x16, sizeof(context_counters_16x16), 1, f);
fread(context_counters_32x32, sizeof(context_counters_32x32), 1, f);
fclose(f);
}
f = fopen("treeupdate.bin", "rb");
if (!f) {
vpx_memset(tree_update_hist_4x4, 0, sizeof(tree_update_hist_4x4));
vpx_memset(tree_update_hist_8x8, 0, sizeof(tree_update_hist_8x8));
vpx_memset(tree_update_hist_16x16, 0, sizeof(tree_update_hist_16x16));
vpx_memset(tree_update_hist_32x32, 0, sizeof(tree_update_hist_32x32));
} else {
fread(tree_update_hist_4x4, sizeof(tree_update_hist_4x4), 1, f);
fread(tree_update_hist_8x8, sizeof(tree_update_hist_8x8), 1, f);
fread(tree_update_hist_16x16, sizeof(tree_update_hist_16x16), 1, f);
fread(tree_update_hist_32x32, sizeof(tree_update_hist_32x32), 1, f);
fclose(f);
}
}
static void print_counter(FILE *f, vp9_coeff_accum *context_counters,
int block_types, const char *header) {
int type, ref, band, pt, t;
fprintf(f, "static const vp9_coeff_count %s = {\n", header);
#define Comma(X) (X ? "," : "")
type = 0;
do {
ref = 0;
fprintf(f, "%s\n { /* block Type %d */", Comma(type), type);
do {
fprintf(f, "%s\n { /* %s */", Comma(type), ref ? "Inter" : "Intra");
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_t x = context_counters[type][ref][band][pt][t];
const int y = (int) x;
assert(x == (int64_t) y); /* no overflow handling yet */
fprintf(f, "%s %d", Comma(t), y);
} while (++t < 1 + MAX_ENTROPY_TOKENS);
fprintf(f, "}");
} while (++pt < PREV_COEF_CONTEXTS);
fprintf(f, "\n }");
} while (++band < COEF_BANDS);
fprintf(f, "\n }");
} while (++ref < REF_TYPES);
fprintf(f, "\n }");
} while (++type < block_types);
fprintf(f, "\n};\n");
}
static void print_probs(FILE *f, vp9_coeff_accum *context_counters,
int block_types, const char *header) {
int type, ref, band, pt, t;
fprintf(f, "static const vp9_coeff_probs %s = {", header);
type = 0;
#define Newline(x, spaces) (x ? " " : "\n" spaces)
do {
fprintf(f, "%s%s{ /* block Type %d */",
Comma(type), Newline(type, " "), type);
ref = 0;
do {
fprintf(f, "%s%s{ /* %s */",
Comma(band), Newline(band, " "), ref ? "Inter" : "Intra");
band = 0;
do {
fprintf(f, "%s%s{ /* Coeff Band %d */",
Comma(band), Newline(band, " "), band);
pt = 0;
do {
unsigned int branch_ct[ENTROPY_NODES][2];
unsigned int coef_counts[MAX_ENTROPY_TOKENS + 1];
vp9_prob coef_probs[ENTROPY_NODES];
if (pt >= 3 && band == 0)
break;
for (t = 0; t < MAX_ENTROPY_TOKENS + 1; ++t)
coef_counts[t] = context_counters[type][ref][band][pt][t];
vp9_tree_probs_from_distribution(vp9_coef_tree, coef_probs,
branch_ct, coef_counts, 0);
branch_ct[0][1] = coef_counts[MAX_ENTROPY_TOKENS] - branch_ct[0][0];
coef_probs[0] = get_binary_prob(branch_ct[0][0], branch_ct[0][1]);
fprintf(f, "%s\n {", Comma(pt));
t = 0;
do {
fprintf(f, "%s %3d", Comma(t), coef_probs[t]);
} while (++t < ENTROPY_NODES);
fprintf(f, " }");
} while (++pt < PREV_COEF_CONTEXTS);
fprintf(f, "\n }");
} while (++band < COEF_BANDS);
fprintf(f, "\n }");
} while (++ref < REF_TYPES);
fprintf(f, "\n }");
} while (++type < block_types);
fprintf(f, "\n};\n");
}
void print_context_counters() {
FILE *f = fopen("vp9_context.c", "w");
fprintf(f, "#include \"vp9_entropy.h\"\n");
fprintf(f, "\n/* *** GENERATED FILE: DO NOT EDIT *** */\n\n");
/* print counts */
print_counter(f, context_counters_4x4, BLOCK_TYPES,
"vp9_default_coef_counts_4x4[BLOCK_TYPES]");
print_counter(f, context_counters_8x8, BLOCK_TYPES,
"vp9_default_coef_counts_8x8[BLOCK_TYPES]");
print_counter(f, context_counters_16x16, BLOCK_TYPES,
"vp9_default_coef_counts_16x16[BLOCK_TYPES]");
print_counter(f, context_counters_32x32, BLOCK_TYPES,
"vp9_default_coef_counts_32x32[BLOCK_TYPES]");
/* print coefficient probabilities */
print_probs(f, context_counters_4x4, BLOCK_TYPES,
"default_coef_probs_4x4[BLOCK_TYPES]");
print_probs(f, context_counters_8x8, BLOCK_TYPES,
"default_coef_probs_8x8[BLOCK_TYPES]");
print_probs(f, context_counters_16x16, BLOCK_TYPES,
"default_coef_probs_16x16[BLOCK_TYPES]");
print_probs(f, context_counters_32x32, BLOCK_TYPES,
"default_coef_probs_32x32[BLOCK_TYPES]");
fclose(f);
f = fopen("context.bin", "wb");
fwrite(context_counters_4x4, sizeof(context_counters_4x4), 1, f);
fwrite(context_counters_8x8, sizeof(context_counters_8x8), 1, f);
fwrite(context_counters_16x16, sizeof(context_counters_16x16), 1, f);
fwrite(context_counters_32x32, sizeof(context_counters_32x32), 1, f);
fclose(f);
}
#endif
void vp9_tokenize_initialize() {
fill_value_tokens();
}
static void stuff_b(VP9_COMP *cpi,
MACROBLOCKD *xd,
const int ib,
TOKENEXTRA **tp,
PLANE_TYPE type,
TX_SIZE tx_size,
int dry_run) {
MB_MODE_INFO *mbmi = &xd->mode_info_context->mbmi;
const BLOCK_SIZE_TYPE sb_type = mbmi->sb_type;
vp9_coeff_count *counts;
vp9_coeff_probs *probs;
int pt, band;
TOKENEXTRA *t = *tp;
const int ref = mbmi->ref_frame != INTRA_FRAME;
ENTROPY_CONTEXT *a, *l, *a1, *l1, *a2, *l2, *a3, *l3, a_ec, l_ec;
#if CONFIG_CODE_NONZEROCOUNT
const int nzc_used = get_nzc_used(tx_size);
#endif
if (sb_type == BLOCK_SIZE_SB32X32) {
a = (ENTROPY_CONTEXT *)xd->above_context +
vp9_block2above_sb64[tx_size][ib];
l = (ENTROPY_CONTEXT *)xd->left_context + vp9_block2left_sb64[tx_size][ib];
a1 = a + sizeof(ENTROPY_CONTEXT_PLANES) / sizeof(ENTROPY_CONTEXT);
l1 = l + sizeof(ENTROPY_CONTEXT_PLANES) / sizeof(ENTROPY_CONTEXT);
a2 = a1 + sizeof(ENTROPY_CONTEXT_PLANES) / sizeof(ENTROPY_CONTEXT);
l2 = l1 + sizeof(ENTROPY_CONTEXT_PLANES) / sizeof(ENTROPY_CONTEXT);
a3 = a2 + sizeof(ENTROPY_CONTEXT_PLANES) / sizeof(ENTROPY_CONTEXT);
l3 = l2 + sizeof(ENTROPY_CONTEXT_PLANES) / sizeof(ENTROPY_CONTEXT);
} else if (sb_type == BLOCK_SIZE_SB32X32) {
a = (ENTROPY_CONTEXT *)xd->above_context + vp9_block2above_sb[tx_size][ib];
l = (ENTROPY_CONTEXT *)xd->left_context + vp9_block2left_sb[tx_size][ib];
a1 = a + sizeof(ENTROPY_CONTEXT_PLANES) / sizeof(ENTROPY_CONTEXT);
l1 = l + sizeof(ENTROPY_CONTEXT_PLANES) / sizeof(ENTROPY_CONTEXT);
a2 = l2 = a3 = l3 = NULL;
} else {
a = (ENTROPY_CONTEXT *)xd->above_context + vp9_block2above[tx_size][ib];
l = (ENTROPY_CONTEXT *)xd->left_context + vp9_block2left[tx_size][ib];
a1 = l1 = a2 = l2 = a3 = l3 = NULL;
}
switch (tx_size) {
default:
case TX_4X4:
a_ec = a[0];
l_ec = l[0];
counts = cpi->coef_counts_4x4;
probs = cpi->common.fc.coef_probs_4x4;
break;
case TX_8X8:
a_ec = (a[0] + a[1]) != 0;
l_ec = (l[0] + l[1]) != 0;
counts = cpi->coef_counts_8x8;
probs = cpi->common.fc.coef_probs_8x8;
break;
case TX_16X16:
if (type != PLANE_TYPE_UV) {
a_ec = (a[0] + a[1] + a[2] + a[3]) != 0;
l_ec = (l[0] + l[1] + l[2] + l[3]) != 0;
} else {
a_ec = (a[0] + a[1] + a1[0] + a1[1]) != 0;
l_ec = (l[0] + l[1] + l1[0] + l1[1]) != 0;
}
counts = cpi->coef_counts_16x16;
probs = cpi->common.fc.coef_probs_16x16;
break;
case TX_32X32:
if (type != PLANE_TYPE_UV) {
a_ec = (a[0] + a[1] + a[2] + a[3] +
a1[0] + a1[1] + a1[2] + a1[3]) != 0;
l_ec = (l[0] + l[1] + l[2] + l[3] +
l1[0] + l1[1] + l1[2] + l1[3]) != 0;
} else {
a_ec = (a[0] + a[1] + a1[0] + a1[1] +
a2[0] + a2[1] + a3[0] + a3[1]) != 0;
l_ec = (l[0] + l[1] + l1[0] + l1[1] +
l2[0] + l2[1] + l3[0] + l3[1]) != 0;
}
counts = cpi->coef_counts_32x32;
probs = cpi->common.fc.coef_probs_32x32;
break;
}
#if CONFIG_CODE_NONZEROCOUNT
if (!nzc_used) {
#endif
VP9_COMBINEENTROPYCONTEXTS(pt, a_ec, l_ec);
band = 0;
t->Token = DCT_EOB_TOKEN;
t->context_tree = probs[type][ref][band][pt];
t->skip_eob_node = 0;
++t;
*tp = t;
if (!dry_run) {
++counts[type][ref][band][pt][DCT_EOB_TOKEN];
}
#if CONFIG_CODE_NONZEROCOUNT
}
#endif
*a = *l = 0;
if (tx_size == TX_8X8) {
a[1] = 0;
l[1] = 0;
} else if (tx_size == TX_16X16) {
if (type != PLANE_TYPE_UV) {
a[1] = a[2] = a[3] = 0;
l[1] = l[2] = l[3] = 0;
} else {
a1[0] = a1[1] = a[1] = a_ec;
l1[0] = l1[1] = l[1] = l_ec;
}
} else if (tx_size == TX_32X32) {
if (type != PLANE_TYPE_Y_WITH_DC) {
a[1] = a[2] = a[3] = a_ec;
l[1] = l[2] = l[3] = l_ec;
a1[0] = a1[1] = a1[2] = a1[3] = a_ec;
l1[0] = l1[1] = l1[2] = l1[3] = l_ec;
} else {
a[1] = a1[0] = a1[1] = a_ec;
l[1] = l1[0] = l1[1] = l_ec;
a2[0] = a2[1] = a3[0] = a3[1] = a_ec;
l2[0] = l2[1] = l3[0] = l3[1] = l_ec;
}
}
}
static void stuff_mb_8x8(VP9_COMP *cpi, MACROBLOCKD *xd,
TOKENEXTRA **t, int dry_run) {
int b;
for (b = 0; b < 16; b += 4)
stuff_b(cpi, xd, b, t, PLANE_TYPE_Y_WITH_DC, TX_8X8, dry_run);
for (b = 16; b < 24; b += 4)
stuff_b(cpi, xd, b, t, PLANE_TYPE_UV, TX_8X8, dry_run);
}
static void stuff_mb_16x16(VP9_COMP *cpi, MACROBLOCKD *xd,
TOKENEXTRA **t, int dry_run) {
int b;
stuff_b(cpi, xd, 0, t, PLANE_TYPE_Y_WITH_DC, TX_16X16, dry_run);
for (b = 16; b < 24; b += 4) {
stuff_b(cpi, xd, b, t, PLANE_TYPE_UV, TX_8X8, dry_run);
}
}
static void stuff_mb_4x4(VP9_COMP *cpi, MACROBLOCKD *xd,
TOKENEXTRA **t, int dry_run) {
int b;
for (b = 0; b < 16; b++)
stuff_b(cpi, xd, b, t, PLANE_TYPE_Y_WITH_DC, TX_4X4, dry_run);
for (b = 16; b < 24; b++)
stuff_b(cpi, xd, b, t, PLANE_TYPE_UV, TX_4X4, dry_run);
}
static void stuff_mb_8x8_4x4uv(VP9_COMP *cpi, MACROBLOCKD *xd,
TOKENEXTRA **t, int dry_run) {
int b;
for (b = 0; b < 16; b += 4)
stuff_b(cpi, xd, b, t, PLANE_TYPE_Y_WITH_DC, TX_8X8, dry_run);
for (b = 16; b < 24; b++)
stuff_b(cpi, xd, b, t, PLANE_TYPE_UV, TX_4X4, dry_run);
}
void vp9_stuff_mb(VP9_COMP *cpi, MACROBLOCKD *xd, TOKENEXTRA **t, int dry_run) {
TX_SIZE tx_size = xd->mode_info_context->mbmi.txfm_size;
TOKENEXTRA * const t_backup = *t;
if (tx_size == TX_16X16) {
stuff_mb_16x16(cpi, xd, t, dry_run);
} else if (tx_size == TX_8X8) {
if (xd->mode_info_context->mbmi.mode == I8X8_PRED ||
xd->mode_info_context->mbmi.mode == SPLITMV) {
stuff_mb_8x8_4x4uv(cpi, xd, t, dry_run);
} else {
stuff_mb_8x8(cpi, xd, t, dry_run);
}
} else {
stuff_mb_4x4(cpi, xd, t, dry_run);
}
if (dry_run) {
*t = t_backup;
}
}
void vp9_stuff_sb(VP9_COMP *cpi, MACROBLOCKD *xd, TOKENEXTRA **t, int dry_run) {
TOKENEXTRA * const t_backup = *t;
int b;
switch (xd->mode_info_context->mbmi.txfm_size) {
case TX_32X32:
stuff_b(cpi, xd, 0, t, PLANE_TYPE_Y_WITH_DC, TX_32X32, dry_run);
for (b = 64; b < 96; b += 16)
stuff_b(cpi, xd, b, t, PLANE_TYPE_UV, TX_16X16, dry_run);
break;
case TX_16X16:
for (b = 0; b < 64; b += 16)
stuff_b(cpi, xd, b, t, PLANE_TYPE_Y_WITH_DC, TX_16X16, dry_run);
for (b = 64; b < 96; b += 16)
stuff_b(cpi, xd, b, t, PLANE_TYPE_UV, TX_16X16, dry_run);
break;
case TX_8X8:
for (b = 0; b < 64; b += 4)
stuff_b(cpi, xd, b, t, PLANE_TYPE_Y_WITH_DC, TX_8X8, dry_run);
for (b = 64; b < 96; b += 4)
stuff_b(cpi, xd, b, t, PLANE_TYPE_UV, TX_8X8, dry_run);
break;
case TX_4X4:
for (b = 0; b < 64; b++)
stuff_b(cpi, xd, b, t, PLANE_TYPE_Y_WITH_DC, TX_4X4, dry_run);
for (b = 64; b < 96; b++)
stuff_b(cpi, xd, b, t, PLANE_TYPE_UV, TX_4X4, dry_run);
break;
default: assert(0);
}
if (dry_run) {
*t = t_backup;
}
}
void vp9_stuff_sb64(VP9_COMP *cpi, MACROBLOCKD *xd,
TOKENEXTRA **t, int dry_run) {
TOKENEXTRA * const t_backup = *t;
int b;
switch (xd->mode_info_context->mbmi.txfm_size) {
case TX_32X32:
for (b = 0; b < 256; b += 64)
stuff_b(cpi, xd, b, t, PLANE_TYPE_Y_WITH_DC, TX_32X32, dry_run);
for (b = 256; b < 384; b += 64)
stuff_b(cpi, xd, b, t, PLANE_TYPE_UV, TX_32X32, dry_run);
break;
case TX_16X16:
for (b = 0; b < 256; b += 16)
stuff_b(cpi, xd, b, t, PLANE_TYPE_Y_WITH_DC, TX_16X16, dry_run);
for (b = 256; b < 384; b += 16)
stuff_b(cpi, xd, b, t, PLANE_TYPE_UV, TX_16X16, dry_run);
break;
case TX_8X8:
for (b = 0; b < 256; b += 4)
stuff_b(cpi, xd, b, t, PLANE_TYPE_Y_WITH_DC, TX_8X8, dry_run);
for (b = 256; b < 384; b += 4)
stuff_b(cpi, xd, b, t, PLANE_TYPE_UV, TX_8X8, dry_run);
break;
case TX_4X4:
for (b = 0; b < 256; b++)
stuff_b(cpi, xd, b, t, PLANE_TYPE_Y_WITH_DC, TX_4X4, dry_run);
for (b = 256; b < 384; b++)
stuff_b(cpi, xd, b, t, PLANE_TYPE_UV, TX_4X4, dry_run);
break;
default: assert(0);
}
if (dry_run) {
*t = t_backup;
}
}
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