1 /* 2 * Copyright (c) 2010 The WebM project authors. All Rights Reserved. 3 * 4 * Use of this source code is governed by a BSD-style license 5 * that can be found in the LICENSE file in the root of the source 6 * tree. An additional intellectual property rights grant can be found 7 * in the file PATENTS. All contributing project authors may 8 * be found in the AUTHORS file in the root of the source tree. 9 */ 10 11 #ifndef VP9_ENCODER_VP9_TOKENIZE_H_ 12 #define VP9_ENCODER_VP9_TOKENIZE_H_ 13 14 #include "vp9/common/vp9_entropy.h" 15 16 #include "vp9/encoder/vp9_block.h" 17 #include "vp9/encoder/vp9_treewriter.h" 18 19 #ifdef __cplusplus 20 extern "C" { 21 #endif 22 23 #define EOSB_TOKEN 127 // Not signalled, encoder only 24 25 #if CONFIG_VP9_HIGHBITDEPTH 26 typedef int32_t EXTRABIT; 27 #else 28 typedef int16_t EXTRABIT; 29 #endif 30 31 32 typedef struct { 33 int16_t token; 34 EXTRABIT extra; 35 } TOKENVALUE; 36 37 typedef struct { 38 const vpx_prob *context_tree; 39 EXTRABIT extra; 40 uint8_t token; 41 uint8_t skip_eob_node; 42 } TOKENEXTRA; 43 44 extern const vpx_tree_index vp9_coef_tree[]; 45 extern const vpx_tree_index vp9_coef_con_tree[]; 46 extern const struct vp9_token vp9_coef_encodings[]; 47 48 int vp9_is_skippable_in_plane(MACROBLOCK *x, BLOCK_SIZE bsize, int plane); 49 int vp9_has_high_freq_in_plane(MACROBLOCK *x, BLOCK_SIZE bsize, int plane); 50 51 struct VP9_COMP; 52 struct ThreadData; 53 54 void vp9_tokenize_sb(struct VP9_COMP *cpi, struct ThreadData *td, 55 TOKENEXTRA **t, int dry_run, BLOCK_SIZE bsize); 56 57 typedef struct { 58 const vpx_prob *prob; 59 int len; 60 int base_val; 61 const int16_t *cost; 62 } vp9_extra_bit; 63 64 // indexed by token value 65 extern const vp9_extra_bit vp9_extra_bits[ENTROPY_TOKENS]; 66 #if CONFIG_VP9_HIGHBITDEPTH 67 extern const vp9_extra_bit vp9_extra_bits_high10[ENTROPY_TOKENS]; 68 extern const vp9_extra_bit vp9_extra_bits_high12[ENTROPY_TOKENS]; 69 #endif // CONFIG_VP9_HIGHBITDEPTH 70 71 extern const int16_t *vp9_dct_value_cost_ptr; 72 /* TODO: The Token field should be broken out into a separate char array to 73 * improve cache locality, since it's needed for costing when the rest of the 74 * fields are not. 75 */ 76 extern const TOKENVALUE *vp9_dct_value_tokens_ptr; 77 extern const TOKENVALUE *vp9_dct_cat_lt_10_value_tokens; 78 extern const int16_t vp9_cat6_low_cost[256]; 79 extern const int16_t vp9_cat6_high_cost[128]; 80 extern const int16_t vp9_cat6_high10_high_cost[512]; 81 extern const int16_t vp9_cat6_high12_high_cost[2048]; 82 static INLINE int16_t vp9_get_cost(int16_t token, EXTRABIT extrabits, 83 const int16_t *cat6_high_table) { 84 if (token != CATEGORY6_TOKEN) 85 return vp9_extra_bits[token].cost[extrabits]; 86 return vp9_cat6_low_cost[extrabits & 0xff] 87 + cat6_high_table[extrabits >> 8]; 88 } 89 90 #if CONFIG_VP9_HIGHBITDEPTH 91 static INLINE const int16_t* vp9_get_high_cost_table(int bit_depth) { 92 return bit_depth == 8 ? vp9_cat6_high_cost 93 : (bit_depth == 10 ? vp9_cat6_high10_high_cost : 94 vp9_cat6_high12_high_cost); 95 } 96 #else 97 static INLINE const int16_t* vp9_get_high_cost_table(int bit_depth) { 98 (void) bit_depth; 99 return vp9_cat6_high_cost; 100 } 101 #endif // CONFIG_VP9_HIGHBITDEPTH 102 103 static INLINE void vp9_get_token_extra(int v, int16_t *token, EXTRABIT *extra) { 104 if (v >= CAT6_MIN_VAL || v <= -CAT6_MIN_VAL) { 105 *token = CATEGORY6_TOKEN; 106 if (v >= CAT6_MIN_VAL) 107 *extra = 2 * v - 2 * CAT6_MIN_VAL; 108 else 109 *extra = -2 * v - 2 * CAT6_MIN_VAL + 1; 110 return; 111 } 112 *token = vp9_dct_cat_lt_10_value_tokens[v].token; 113 *extra = vp9_dct_cat_lt_10_value_tokens[v].extra; 114 } 115 static INLINE int16_t vp9_get_token(int v) { 116 if (v >= CAT6_MIN_VAL || v <= -CAT6_MIN_VAL) 117 return 10; 118 return vp9_dct_cat_lt_10_value_tokens[v].token; 119 } 120 121 122 #ifdef __cplusplus 123 } // extern "C" 124 #endif 125 126 #endif // VP9_ENCODER_VP9_TOKENIZE_H_ 127
