vpx/vp9/encoder/vp9_tokenize.h
hui su 00c793ee5f Optimize entropy coding of non-transform tokens
Use separate token probabilities and counters for non-transform
blocks (pixel domain) . Initial probabilities are trained with screen_content
clips. On screen_content, it improves coding performance by about
2% (from +16.4% to +18.45%).

The initial probabilities are not optimized for natural videos. So it should
not be used for natural videos. Set FOR_SCREEN_CONTENT as 0/1 to specify
whether or not to enable this patch.

Change-Id: Ifa361c94bb62aa4b783cbfa50de08c3fecae0984
2015-05-07 07:58:19 -07:00

84 lines
2.3 KiB
C

/*
* 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.
*/
#ifndef VP9_ENCODER_VP9_TOKENIZE_H_
#define VP9_ENCODER_VP9_TOKENIZE_H_
#include "vp9/common/vp9_entropy.h"
#include "vp9/encoder/vp9_block.h"
#include "vp9/encoder/vp9_treewriter.h"
#ifdef __cplusplus
extern "C" {
#endif
void vp9_tokenize_initialize();
#define EOSB_TOKEN 127 // Not signalled, encoder only
typedef struct {
int16_t token;
#if CONFIG_VP9_HIGHBITDEPTH
int32_t extra;
#else
int16_t extra;
#endif
} TOKENVALUE;
typedef struct {
const vp9_prob *context_tree;
#if CONFIG_VP9_HIGHBITDEPTH
int32_t extra;
#else
int16_t extra;
#endif
uint8_t token;
uint8_t skip_eob_node;
#if CONFIG_TX_SKIP
uint8_t is_pxd_token;
#endif // CONFIG_TX_SKIP
} TOKENEXTRA;
extern const vp9_tree_index vp9_coef_tree[];
extern const vp9_tree_index vp9_coef_con_tree[];
extern struct vp9_token vp9_coef_encodings[];
int vp9_is_skippable_in_plane(MACROBLOCK *x, BLOCK_SIZE bsize, int plane);
int vp9_has_high_freq_in_plane(MACROBLOCK *x, BLOCK_SIZE bsize, int plane);
struct VP9_COMP;
void vp9_tokenize_sb(struct VP9_COMP *cpi, TOKENEXTRA **t, int dry_run,
BLOCK_SIZE bsize);
#if CONFIG_SUPERTX
void vp9_tokenize_sb_supertx(struct VP9_COMP *cpi, TOKENEXTRA **t, int dry_run,
BLOCK_SIZE bsize);
#endif
extern const int16_t *vp9_dct_value_cost_ptr;
/* TODO: The Token field should be broken out into a separate char array to
* improve cache locality, since it's needed for costing when the rest of the
* fields are not.
*/
extern const TOKENVALUE *vp9_dct_value_tokens_ptr;
#if CONFIG_VP9_HIGHBITDEPTH
extern const int16_t *vp9_dct_value_cost_high10_ptr;
extern const TOKENVALUE *vp9_dct_value_tokens_high10_ptr;
extern const int16_t *vp9_dct_value_cost_high12_ptr;
extern const TOKENVALUE *vp9_dct_value_tokens_high12_ptr;
#endif // CONFIG_VP9_HIGHBITDEPTH
#ifdef __cplusplus
} // extern "C"
#endif
#endif // VP9_ENCODER_VP9_TOKENIZE_H_