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1 /*
2  * Copyright (c) 2016, Alliance for Open Media. All rights reserved
3  *
4  * This source code is subject to the terms of the BSD 2 Clause License and
5  * the Alliance for Open Media Patent License 1.0. If the BSD 2 Clause License
6  * was not distributed with this source code in the LICENSE file, you can
7  * obtain it at www.aomedia.org/license/software. If the Alliance for Open
8  * Media Patent License 1.0 was not distributed with this source code in the
9  * PATENTS file, you can obtain it at www.aomedia.org/license/patent.
10  */
11 
12 #ifndef AOM_AOM_DSP_BITWRITER_H_
13 #define AOM_AOM_DSP_BITWRITER_H_
14 
15 #include <assert.h>
16 
17 #include "config/aom_config.h"
18 
19 #include "aom_dsp/daalaboolwriter.h"
20 #include "aom_dsp/prob.h"
21 
22 #if CONFIG_RD_DEBUG
23 #include "av1/common/blockd.h"
24 #include "av1/encoder/cost.h"
25 #endif
26 
27 #ifdef __cplusplus
28 extern "C" {
29 #endif
30 
31 typedef struct daala_writer aom_writer;
32 
33 typedef struct TOKEN_STATS {
34   int cost;
35 #if CONFIG_RD_DEBUG
36   int txb_coeff_cost_map[TXB_COEFF_COST_MAP_SIZE][TXB_COEFF_COST_MAP_SIZE];
37 #endif
38 } TOKEN_STATS;
39 
init_token_stats(TOKEN_STATS * token_stats)40 static INLINE void init_token_stats(TOKEN_STATS *token_stats) {
41 #if CONFIG_RD_DEBUG
42   int r, c;
43   for (r = 0; r < TXB_COEFF_COST_MAP_SIZE; ++r) {
44     for (c = 0; c < TXB_COEFF_COST_MAP_SIZE; ++c) {
45       token_stats->txb_coeff_cost_map[r][c] = 0;
46     }
47   }
48 #endif
49   token_stats->cost = 0;
50 }
51 
aom_start_encode(aom_writer * bc,uint8_t * buffer)52 static INLINE void aom_start_encode(aom_writer *bc, uint8_t *buffer) {
53   aom_daala_start_encode(bc, buffer);
54 }
55 
aom_stop_encode(aom_writer * bc)56 static INLINE int aom_stop_encode(aom_writer *bc) {
57   return aom_daala_stop_encode(bc);
58 }
59 
aom_write(aom_writer * br,int bit,int probability)60 static INLINE void aom_write(aom_writer *br, int bit, int probability) {
61   aom_daala_write(br, bit, probability);
62 }
63 
aom_write_bit(aom_writer * w,int bit)64 static INLINE void aom_write_bit(aom_writer *w, int bit) {
65   aom_write(w, bit, 128);  // aom_prob_half
66 }
67 
aom_write_literal(aom_writer * w,int data,int bits)68 static INLINE void aom_write_literal(aom_writer *w, int data, int bits) {
69   int bit;
70 
71   for (bit = bits - 1; bit >= 0; bit--) aom_write_bit(w, 1 & (data >> bit));
72 }
73 
aom_write_cdf(aom_writer * w,int symb,const aom_cdf_prob * cdf,int nsymbs)74 static INLINE void aom_write_cdf(aom_writer *w, int symb,
75                                  const aom_cdf_prob *cdf, int nsymbs) {
76   daala_write_symbol(w, symb, cdf, nsymbs);
77 }
78 
aom_write_symbol(aom_writer * w,int symb,aom_cdf_prob * cdf,int nsymbs)79 static INLINE void aom_write_symbol(aom_writer *w, int symb, aom_cdf_prob *cdf,
80                                     int nsymbs) {
81   aom_write_cdf(w, symb, cdf, nsymbs);
82   if (w->allow_update_cdf) update_cdf(cdf, symb, nsymbs);
83 }
84 
85 #ifdef __cplusplus
86 }  // extern "C"
87 #endif
88 
89 #endif  // AOM_AOM_DSP_BITWRITER_H_
90