113 строки
3.3 KiB
C
113 строки
3.3 KiB
C
/*
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* Copyright (c) 2010 The WebM project authors. All Rights Reserved.
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*
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* Use of this source code is governed by a BSD-style license
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* that can be found in the LICENSE file in the root of the source
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* tree. An additional intellectual property rights grant can be found
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* in the file PATENTS. All contributing project authors may
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* be found in the AUTHORS file in the root of the source tree.
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*/
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#ifndef VP9_ENCODER_VP9_TOKENIZE_H_
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#define VP9_ENCODER_VP9_TOKENIZE_H_
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#include "vp9/common/vp9_entropy.h"
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#include "vp9/encoder/vp9_block.h"
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#include "vp9/encoder/vp9_treewriter.h"
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#ifdef __cplusplus
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extern "C" {
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#endif
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#define EOSB_TOKEN 127 // Not signalled, encoder only
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#if CONFIG_VP9_HIGHBITDEPTH
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typedef int32_t EXTRABIT;
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#else
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typedef int16_t EXTRABIT;
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#endif
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typedef struct {
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int16_t token;
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EXTRABIT extra;
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} TOKENVALUE;
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typedef struct {
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const vp9_prob *context_tree;
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EXTRABIT extra;
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uint8_t token;
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uint8_t skip_eob_node;
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} TOKENEXTRA;
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extern const vp9_tree_index vp9_coef_tree[];
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extern const vp9_tree_index vp9_coef_con_tree[];
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extern const struct vp9_token vp9_coef_encodings[];
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int vp9_is_skippable_in_plane(MACROBLOCK *x, BLOCK_SIZE bsize, int plane);
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int vp9_has_high_freq_in_plane(MACROBLOCK *x, BLOCK_SIZE bsize, int plane);
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struct VP9_COMP;
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struct ThreadData;
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void vp9_tokenize_sb(struct VP9_COMP *cpi, struct ThreadData *td,
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TOKENEXTRA **t, int dry_run, BLOCK_SIZE bsize);
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extern const int16_t *vp9_dct_value_cost_ptr;
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/* TODO: The Token field should be broken out into a separate char array to
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* improve cache locality, since it's needed for costing when the rest of the
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* fields are not.
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*/
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extern const TOKENVALUE *vp9_dct_value_tokens_ptr;
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extern const TOKENVALUE *vp9_dct_cat_lt_10_value_tokens;
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extern const int16_t vp9_cat6_low_cost[256];
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extern const int16_t vp9_cat6_high_cost[128];
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extern const int16_t vp9_cat6_high10_high_cost[512];
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extern const int16_t vp9_cat6_high12_high_cost[2048];
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static INLINE int16_t vp9_get_cost(int16_t token, EXTRABIT extrabits,
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const int16_t *cat6_high_table) {
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if (token != CATEGORY6_TOKEN)
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return vp9_extra_bits[token].cost[extrabits];
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return vp9_cat6_low_cost[extrabits & 0xff]
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+ cat6_high_table[extrabits >> 8];
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}
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#if CONFIG_VP9_HIGHBITDEPTH
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static INLINE const int16_t* vp9_get_high_cost_table(int bit_depth) {
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return bit_depth == 8 ? vp9_cat6_high_cost
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: (bit_depth == 10 ? vp9_cat6_high10_high_cost :
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vp9_cat6_high12_high_cost);
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}
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#else
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static INLINE const int16_t* vp9_get_high_cost_table(int bit_depth) {
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(void) bit_depth;
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return vp9_cat6_high_cost;
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}
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#endif // CONFIG_VP9_HIGHBITDEPTH
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static INLINE void vp9_get_token_extra(int v, int16_t *token, EXTRABIT *extra) {
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if (v >= CAT6_MIN_VAL || v <= -CAT6_MIN_VAL) {
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*token = CATEGORY6_TOKEN;
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if (v >= CAT6_MIN_VAL)
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*extra = 2 * v - 2 * CAT6_MIN_VAL;
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else
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*extra = -2 * v - 2 * CAT6_MIN_VAL + 1;
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return;
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}
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*token = vp9_dct_cat_lt_10_value_tokens[v].token;
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*extra = vp9_dct_cat_lt_10_value_tokens[v].extra;
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}
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static INLINE int16_t vp9_get_token(int v) {
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if (v >= CAT6_MIN_VAL || v <= -CAT6_MIN_VAL)
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return 10;
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return vp9_dct_cat_lt_10_value_tokens[v].token;
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}
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#ifdef __cplusplus
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} // extern "C"
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#endif
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#endif // VP9_ENCODER_VP9_TOKENIZE_H_
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