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Jim Bankoski authored
Change-Id: Ic316d3374ff9a2b43897272260947d56765a0fdd
8cf352ab
/* * 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_mem/vpx_mem.h"#include "vpx_ports/mem.h"#include "vp9/common/vp9_blockd.h"#include "vp9/common/vp9_common.h"#include "vp9/common/vp9_seg_common.h"#include "vp9/decoder/vp9_dboolhuff.h"#include "vp9/decoder/vp9_detokenize.h"#include "vp9/decoder/vp9_onyxd_int.h"#include "vp9/decoder/vp9_treereader.h"#define EOB_CONTEXT_NODE 0#define ZERO_CONTEXT_NODE 1#define ONE_CONTEXT_NODE 2#define LOW_VAL_CONTEXT_NODE 0#define TWO_CONTEXT_NODE 1#define THREE_CONTEXT_NODE 2#define HIGH_LOW_CONTEXT_NODE 3#define CAT_ONE_CONTEXT_NODE 4#define CAT_THREEFOUR_CONTEXT_NODE 5#define CAT_THREE_CONTEXT_NODE 6#define CAT_FIVE_CONTEXT_NODE 7#define CAT1_MIN_VAL 5#define CAT2_MIN_VAL 7#define CAT3_MIN_VAL 11#define CAT4_MIN_VAL 19#define CAT5_MIN_VAL 35#define CAT6_MIN_VAL 67#define CAT1_PROB0 159#define CAT2_PROB0 145#define CAT2_PROB1 165#define CAT3_PROB0 140#define CAT3_PROB1 148#define CAT3_PROB2 173#define CAT4_PROB0 135#define CAT4_PROB1 140#define CAT4_PROB2 155#define CAT4_PROB3 176#define CAT5_PROB0 130#define CAT5_PROB1 134#define CAT5_PROB2 141#define CAT5_PROB3 157#define CAT5_PROB4 180static const vp9_prob cat6_prob[15] = { 254, 254, 254, 252, 249, 243, 230, 196, 177, 153, 140, 133, 130, 129, 0};static const int token_to_counttoken[MAX_ENTROPY_TOKENS] = { ZERO_TOKEN, ONE_TOKEN, TWO_TOKEN, TWO_TOKEN, TWO_TOKEN, TWO_TOKEN, TWO_TOKEN, TWO_TOKEN, TWO_TOKEN, TWO_TOKEN, TWO_TOKEN, DCT_EOB_MODEL_TOKEN};#define INCREMENT_COUNT(token) \7172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130131132133134135136137138139140
do { \
if (!cm->frame_parallel_decoding_mode) \
++coef_counts[band][pt][token_to_counttoken[token]]; \
} while (0)
#define WRITE_COEF_CONTINUE(val, token) \
{ \
v = (val * dqv) >> dq_shift; \
dqcoeff_ptr[scan[c]] = (vp9_read_bit(r) ? -v : v); \
INCREMENT_COUNT(token); \
token_cache[scan[c]] = vp9_pt_energy_class[token]; \
++c; \
dqv = dq[1]; \
continue; \
}
#define ADJUST_COEF(prob, bits_count) \
do { \
val += (vp9_read(r, prob) << bits_count); \
} while (0)
static int decode_coefs(VP9_COMMON *cm, const MACROBLOCKD *xd,
vp9_reader *r, int block_idx,
PLANE_TYPE type, int seg_eob, int16_t *dqcoeff_ptr,
TX_SIZE tx_size, const int16_t *dq, int pt,
uint8_t *token_cache) {
const FRAME_CONTEXT *const fc = &cm->fc;
FRAME_COUNTS *const counts = &cm->counts;
const int ref = is_inter_block(&xd->mi_8x8[0]->mbmi);
int band, c = 0;
const vp9_prob (*coef_probs)[PREV_COEF_CONTEXTS][UNCONSTRAINED_NODES] =
fc->coef_probs[tx_size][type][ref];
const vp9_prob *prob;
unsigned int (*coef_counts)[PREV_COEF_CONTEXTS][UNCONSTRAINED_NODES + 1] =
counts->coef[tx_size][type][ref];
unsigned int (*eob_branch_count)[PREV_COEF_CONTEXTS] =
counts->eob_branch[tx_size][type][ref];
const int16_t *scan, *nb;
const uint8_t *cat6;
const uint8_t *band_translate = get_band_translate(tx_size);
const int dq_shift = (tx_size == TX_32X32);
const MODE_INFO *const mi = xd->mi_8x8[0];
const MB_MODE_INFO *const mbmi = &mi->mbmi;
scan_order const *so;
int v;
int16_t dqv = dq[0];
if (mbmi->ref_frame[0] > 0 || type != PLANE_TYPE_Y_WITH_DC || xd->lossless) {
so = &inter_scan_orders[tx_size];
} else {
MB_PREDICTION_MODE mode = mbmi->mode;
if (mbmi->sb_type < BLOCK_8X8)
mode = mi->bmi[block_idx].as_mode;
so = &intra_scan_orders[tx_size][mode];
}
scan = so->scan;
nb = so->neighbors;
while (c < seg_eob) {
int val;
if (c)
pt = get_coef_context(nb, token_cache, c);
band = *band_translate++;
prob = coef_probs[band][pt];
if (!cm->frame_parallel_decoding_mode)
++eob_branch_count[band][pt];
if (!vp9_read(r, prob[EOB_CONTEXT_NODE]))
break;
goto DECODE_ZERO;
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SKIP_START:
if (c >= seg_eob)
break;
if (c)
pt = get_coef_context(nb, token_cache, c);
band = *band_translate++;
prob = coef_probs[band][pt];
DECODE_ZERO:
if (!vp9_read(r, prob[ZERO_CONTEXT_NODE])) {
INCREMENT_COUNT(ZERO_TOKEN);
token_cache[scan[c]] = vp9_pt_energy_class[ZERO_TOKEN];
dqv = dq[1]; \
++c;
goto SKIP_START;
}
// ONE_CONTEXT_NODE_0_
if (!vp9_read(r, prob[ONE_CONTEXT_NODE])) {
WRITE_COEF_CONTINUE(1, ONE_TOKEN);
}
prob = vp9_pareto8_full[coef_probs[band][pt][PIVOT_NODE]-1];
// LOW_VAL_CONTEXT_NODE_0_
if (!vp9_read(r, prob[LOW_VAL_CONTEXT_NODE])) {
if (!vp9_read(r, prob[TWO_CONTEXT_NODE])) {
WRITE_COEF_CONTINUE(2, TWO_TOKEN);
}
if (!vp9_read(r, prob[THREE_CONTEXT_NODE])) {
WRITE_COEF_CONTINUE(3, THREE_TOKEN);
}
WRITE_COEF_CONTINUE(4, FOUR_TOKEN);
}
// HIGH_LOW_CONTEXT_NODE_0_
if (!vp9_read(r, prob[HIGH_LOW_CONTEXT_NODE])) {
if (!vp9_read(r, prob[CAT_ONE_CONTEXT_NODE])) {
val = CAT1_MIN_VAL;
ADJUST_COEF(CAT1_PROB0, 0);
WRITE_COEF_CONTINUE(val, DCT_VAL_CATEGORY1);
}
val = CAT2_MIN_VAL;
ADJUST_COEF(CAT2_PROB1, 1);
ADJUST_COEF(CAT2_PROB0, 0);
WRITE_COEF_CONTINUE(val, DCT_VAL_CATEGORY2);
}
// CAT_THREEFOUR_CONTEXT_NODE_0_
if (!vp9_read(r, prob[CAT_THREEFOUR_CONTEXT_NODE])) {
if (!vp9_read(r, prob[CAT_THREE_CONTEXT_NODE])) {
val = CAT3_MIN_VAL;
ADJUST_COEF(CAT3_PROB2, 2);
ADJUST_COEF(CAT3_PROB1, 1);
ADJUST_COEF(CAT3_PROB0, 0);
WRITE_COEF_CONTINUE(val, DCT_VAL_CATEGORY3);
}
val = CAT4_MIN_VAL;
ADJUST_COEF(CAT4_PROB3, 3);
ADJUST_COEF(CAT4_PROB2, 2);
ADJUST_COEF(CAT4_PROB1, 1);
ADJUST_COEF(CAT4_PROB0, 0);
WRITE_COEF_CONTINUE(val, DCT_VAL_CATEGORY4);
}
// CAT_FIVE_CONTEXT_NODE_0_:
if (!vp9_read(r, prob[CAT_FIVE_CONTEXT_NODE])) {
val = CAT5_MIN_VAL;
ADJUST_COEF(CAT5_PROB4, 4);
ADJUST_COEF(CAT5_PROB3, 3);
ADJUST_COEF(CAT5_PROB2, 2);
ADJUST_COEF(CAT5_PROB1, 1);
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ADJUST_COEF(CAT5_PROB0, 0);
WRITE_COEF_CONTINUE(val, DCT_VAL_CATEGORY5);
}
val = 0;
cat6 = cat6_prob;
while (*cat6)
val = (val << 1) | vp9_read(r, *cat6++);
val += CAT6_MIN_VAL;
WRITE_COEF_CONTINUE(val, DCT_VAL_CATEGORY6);
}
if (c < seg_eob) {
if (!cm->frame_parallel_decoding_mode)
++coef_counts[band][pt][DCT_EOB_MODEL_TOKEN];
}
return c;
}
int vp9_decode_block_tokens(VP9_COMMON *cm, MACROBLOCKD *xd,
int plane, int block, BLOCK_SIZE plane_bsize,
int x, int y, TX_SIZE tx_size, vp9_reader *r,
uint8_t *token_cache) {
struct macroblockd_plane *const pd = &xd->plane[plane];
const int seg_eob = get_tx_eob(&cm->seg, xd->mi_8x8[0]->mbmi.segment_id,
tx_size);
const int pt = get_entropy_context(tx_size, pd->above_context + x,
pd->left_context + y);
const int eob = decode_coefs(cm, xd, r, block, pd->plane_type, seg_eob,
BLOCK_OFFSET(pd->dqcoeff, block), tx_size,
pd->dequant, pt, token_cache);
set_contexts(xd, pd, plane_bsize, tx_size, eob > 0, x, y);
pd->eobs[block] = eob;
return eob;
}