1fe85a35e0
This patch incorporates adaptive entropy coding of coefficient tokens, and mode/mv information based on distributions encountered in a frame. Specifically, there is an initial forward update to the probabilities in the bitstream as before for coding the symbols in the frame, however at the end of decoding each frame, the forward update to the probabilities is reverted and instead the probabilities are updated towards the actual distributions encountered within the frame. The amount of update is weighted by the number of hits within each context. Results on derf/hd/std-hd are all up by 1.6%. On derf, the most of the gains come from coefficients, however for the hd and std-hd sets, the most of the gains come from the mode/mv information updates. Change-Id: I708c0e11fdacafee04940fe7ae159ba6844005fd
74 lines
2.6 KiB
C
74 lines
2.6 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 __INC_ENTROPYMODE_H
|
|
#define __INC_ENTROPYMODE_H
|
|
|
|
#include "onyxc_int.h"
|
|
#include "treecoder.h"
|
|
|
|
typedef const int vp8_mbsplit[16];
|
|
|
|
#define VP8_NUMMBSPLITS 4
|
|
|
|
extern vp8_mbsplit vp8_mbsplits [VP8_NUMMBSPLITS];
|
|
|
|
extern const int vp8_mbsplit_count [VP8_NUMMBSPLITS]; /* # of subsets */
|
|
|
|
extern const vp8_prob vp8_mbsplit_probs [VP8_NUMMBSPLITS-1];
|
|
|
|
extern int vp8_mv_cont(const int_mv *l, const int_mv *a);
|
|
#define SUBMVREF_COUNT 5
|
|
extern const vp8_prob vp8_sub_mv_ref_prob2 [SUBMVREF_COUNT][VP8_SUBMVREFS-1];
|
|
|
|
|
|
extern const unsigned int vp8_kf_default_bmode_counts [VP8_BINTRAMODES] [VP8_BINTRAMODES] [VP8_BINTRAMODES];
|
|
|
|
|
|
extern const vp8_tree_index vp8_bmode_tree[];
|
|
|
|
extern const vp8_tree_index vp8_ymode_tree[];
|
|
extern const vp8_tree_index vp8_kf_ymode_tree[];
|
|
extern const vp8_tree_index vp8_uv_mode_tree[];
|
|
extern const vp8_tree_index vp8_i8x8_mode_tree[];
|
|
extern const vp8_tree_index vp8_mbsplit_tree[];
|
|
extern const vp8_tree_index vp8_mv_ref_tree[];
|
|
extern const vp8_tree_index vp8_sub_mv_ref_tree[];
|
|
|
|
extern struct vp8_token_struct vp8_bmode_encodings [VP8_BINTRAMODES];
|
|
extern struct vp8_token_struct vp8_ymode_encodings [VP8_YMODES];
|
|
extern struct vp8_token_struct vp8_kf_ymode_encodings [VP8_YMODES];
|
|
extern struct vp8_token_struct vp8_i8x8_mode_encodings [VP8_UV_MODES];
|
|
extern struct vp8_token_struct vp8_uv_mode_encodings [VP8_UV_MODES];
|
|
extern struct vp8_token_struct vp8_mbsplit_encodings [VP8_NUMMBSPLITS];
|
|
|
|
/* Inter mode values do not start at zero */
|
|
|
|
extern struct vp8_token_struct vp8_mv_ref_encoding_array [VP8_MVREFS];
|
|
extern struct vp8_token_struct vp8_sub_mv_ref_encoding_array [VP8_SUBMVREFS];
|
|
|
|
void vp8_entropy_mode_init(void);
|
|
|
|
void vp8_init_mbmode_probs(VP8_COMMON *x);
|
|
extern void vp8_init_mode_contexts(VP8_COMMON *pc);
|
|
extern void vp8_update_mode_context(VP8_COMMON *pc);;
|
|
extern void vp8_accum_mv_refs(VP8_COMMON *pc,
|
|
MB_PREDICTION_MODE m,
|
|
const int ct[4]);
|
|
|
|
void vp8_default_bmode_probs(vp8_prob dest [VP8_BINTRAMODES-1]);
|
|
void vp8_kf_default_bmode_probs(vp8_prob dest [VP8_BINTRAMODES] [VP8_BINTRAMODES] [VP8_BINTRAMODES-1]);
|
|
|
|
#if CONFIG_ADAPTIVE_ENTROPY
|
|
void vp8_adapt_mode_probs(struct VP8Common *);
|
|
#endif
|
|
#endif
|