1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
|
/*
* Copyright (c) 2016, Alliance for Open Media. All rights reserved
*
* This source code is subject to the terms of the BSD 2 Clause License and
* the Alliance for Open Media Patent License 1.0. If the BSD 2 Clause License
* was not distributed with this source code in the LICENSE file, you can
* obtain it at www.aomedia.org/license/software. If the Alliance for Open
* Media Patent License 1.0 was not distributed with this source code in the
* PATENTS file, you can obtain it at www.aomedia.org/license/patent.
*/
#ifndef AOM_DSP_BITREADER_H_
#define AOM_DSP_BITREADER_H_
#include <assert.h>
#include <limits.h>
#include "config/aom_config.h"
#include "aom/aomdx.h"
#include "aom/aom_integer.h"
#include "aom_dsp/daalaboolreader.h"
#include "aom_dsp/prob.h"
#include "av1/common/odintrin.h"
#if CONFIG_ACCOUNTING
#include "av1/decoder/accounting.h"
#define ACCT_STR_NAME acct_str
#define ACCT_STR_PARAM , const char *ACCT_STR_NAME
#define ACCT_STR_ARG(s) , s
#else
#define ACCT_STR_PARAM
#define ACCT_STR_ARG(s)
#endif
#define aom_read(r, prob, ACCT_STR_NAME) \
aom_read_(r, prob ACCT_STR_ARG(ACCT_STR_NAME))
#define aom_read_bit(r, ACCT_STR_NAME) \
aom_read_bit_(r ACCT_STR_ARG(ACCT_STR_NAME))
#define aom_read_tree(r, tree, probs, ACCT_STR_NAME) \
aom_read_tree_(r, tree, probs ACCT_STR_ARG(ACCT_STR_NAME))
#define aom_read_literal(r, bits, ACCT_STR_NAME) \
aom_read_literal_(r, bits ACCT_STR_ARG(ACCT_STR_NAME))
#define aom_read_cdf(r, cdf, nsymbs, ACCT_STR_NAME) \
aom_read_cdf_(r, cdf, nsymbs ACCT_STR_ARG(ACCT_STR_NAME))
#define aom_read_symbol(r, cdf, nsymbs, ACCT_STR_NAME) \
aom_read_symbol_(r, cdf, nsymbs ACCT_STR_ARG(ACCT_STR_NAME))
#ifdef __cplusplus
extern "C" {
#endif
typedef struct daala_reader aom_reader;
static INLINE int aom_reader_init(aom_reader *r, const uint8_t *buffer,
size_t size) {
return aom_daala_reader_init(r, buffer, (int)size);
}
static INLINE const uint8_t *aom_reader_find_begin(aom_reader *r) {
return aom_daala_reader_find_begin(r);
}
static INLINE const uint8_t *aom_reader_find_end(aom_reader *r) {
return aom_daala_reader_find_end(r);
}
static INLINE int aom_reader_has_error(aom_reader *r) {
return aom_daala_reader_has_error(r);
}
// Returns the position in the bit reader in bits.
static INLINE uint32_t aom_reader_tell(const aom_reader *r) {
return aom_daala_reader_tell(r);
}
// Returns the position in the bit reader in 1/8th bits.
static INLINE uint32_t aom_reader_tell_frac(const aom_reader *r) {
return aom_daala_reader_tell_frac(r);
}
#if CONFIG_ACCOUNTING
static INLINE void aom_process_accounting(const aom_reader *r ACCT_STR_PARAM) {
if (r->accounting != NULL) {
uint32_t tell_frac;
tell_frac = aom_reader_tell_frac(r);
aom_accounting_record(r->accounting, ACCT_STR_NAME,
tell_frac - r->accounting->last_tell_frac);
r->accounting->last_tell_frac = tell_frac;
}
}
static INLINE void aom_update_symb_counts(const aom_reader *r, int is_binary) {
if (r->accounting != NULL) {
r->accounting->syms.num_multi_syms += !is_binary;
r->accounting->syms.num_binary_syms += !!is_binary;
}
}
#endif
static INLINE int aom_read_(aom_reader *r, int prob ACCT_STR_PARAM) {
int ret;
ret = aom_daala_read(r, prob);
#if CONFIG_ACCOUNTING
if (ACCT_STR_NAME) aom_process_accounting(r, ACCT_STR_NAME);
aom_update_symb_counts(r, 1);
#endif
return ret;
}
static INLINE int aom_read_bit_(aom_reader *r ACCT_STR_PARAM) {
int ret;
ret = aom_read(r, 128, NULL); // aom_prob_half
#if CONFIG_ACCOUNTING
if (ACCT_STR_NAME) aom_process_accounting(r, ACCT_STR_NAME);
#endif
return ret;
}
static INLINE int aom_read_literal_(aom_reader *r, int bits ACCT_STR_PARAM) {
int literal = 0, bit;
for (bit = bits - 1; bit >= 0; bit--) literal |= aom_read_bit(r, NULL) << bit;
#if CONFIG_ACCOUNTING
if (ACCT_STR_NAME) aom_process_accounting(r, ACCT_STR_NAME);
#endif
return literal;
}
static INLINE int aom_read_cdf_(aom_reader *r, const aom_cdf_prob *cdf,
int nsymbs ACCT_STR_PARAM) {
int ret;
ret = daala_read_symbol(r, cdf, nsymbs);
#if CONFIG_ACCOUNTING
if (ACCT_STR_NAME) aom_process_accounting(r, ACCT_STR_NAME);
aom_update_symb_counts(r, (nsymbs == 2));
#endif
return ret;
}
static INLINE int aom_read_symbol_(aom_reader *r, aom_cdf_prob *cdf,
int nsymbs ACCT_STR_PARAM) {
int ret;
ret = aom_read_cdf(r, cdf, nsymbs, ACCT_STR_NAME);
if (r->allow_update_cdf) update_cdf(cdf, ret, nsymbs);
return ret;
}
#ifdef __cplusplus
} // extern "C"
#endif
#endif // AOM_DSP_BITREADER_H_
|
