GCC Code Coverage Report
Directory: ../../../ffmpeg/ Exec Total Coverage
File: src/libavcodec/x86/ac3dsp_init.c Lines: 40 45 88.9 %
Date: 2020-09-25 23:16:12 Branches: 43 100 43.0 %

Line Branch Exec Source
1
/*
2
 * x86-optimized AC-3 DSP functions
3
 * Copyright (c) 2011 Justin Ruggles
4
 *
5
 * This file is part of FFmpeg.
6
 *
7
 * FFmpeg is free software; you can redistribute it and/or
8
 * modify it under the terms of the GNU Lesser General Public
9
 * License as published by the Free Software Foundation; either
10
 * version 2.1 of the License, or (at your option) any later version.
11
 *
12
 * FFmpeg is distributed in the hope that it will be useful,
13
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
15
 * Lesser General Public License for more details.
16
 *
17
 * You should have received a copy of the GNU Lesser General Public
18
 * License along with FFmpeg; if not, write to the Free Software
19
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
20
 */
21
22
#include "libavutil/attributes.h"
23
#include "libavutil/mem.h"
24
#include "libavutil/x86/asm.h"
25
#include "libavutil/x86/cpu.h"
26
#include "libavcodec/ac3.h"
27
#include "libavcodec/ac3dsp.h"
28
29
void ff_ac3_exponent_min_mmx   (uint8_t *exp, int num_reuse_blocks, int nb_coefs);
30
void ff_ac3_exponent_min_mmxext(uint8_t *exp, int num_reuse_blocks, int nb_coefs);
31
void ff_ac3_exponent_min_sse2  (uint8_t *exp, int num_reuse_blocks, int nb_coefs);
32
33
int ff_ac3_max_msb_abs_int16_mmx  (const int16_t *src, int len);
34
int ff_ac3_max_msb_abs_int16_mmxext(const int16_t *src, int len);
35
int ff_ac3_max_msb_abs_int16_sse2 (const int16_t *src, int len);
36
int ff_ac3_max_msb_abs_int16_ssse3(const int16_t *src, int len);
37
38
void ff_ac3_lshift_int16_mmx (int16_t *src, unsigned int len, unsigned int shift);
39
void ff_ac3_lshift_int16_sse2(int16_t *src, unsigned int len, unsigned int shift);
40
41
void ff_ac3_rshift_int32_mmx (int32_t *src, unsigned int len, unsigned int shift);
42
void ff_ac3_rshift_int32_sse2(int32_t *src, unsigned int len, unsigned int shift);
43
44
void ff_float_to_fixed24_3dnow(int32_t *dst, const float *src, unsigned int len);
45
void ff_float_to_fixed24_sse  (int32_t *dst, const float *src, unsigned int len);
46
void ff_float_to_fixed24_sse2 (int32_t *dst, const float *src, unsigned int len);
47
48
int ff_ac3_compute_mantissa_size_sse2(uint16_t mant_cnt[6][16]);
49
50
void ff_ac3_extract_exponents_sse2 (uint8_t *exp, int32_t *coef, int nb_coefs);
51
void ff_ac3_extract_exponents_ssse3(uint8_t *exp, int32_t *coef, int nb_coefs);
52
53
void ff_apply_window_int16_round_mmxext(int16_t *output, const int16_t *input,
54
                                        const int16_t *window, unsigned int len);
55
void ff_apply_window_int16_round_sse2(int16_t *output, const int16_t *input,
56
                                      const int16_t *window, unsigned int len);
57
void ff_apply_window_int16_mmxext(int16_t *output, const int16_t *input,
58
                                  const int16_t *window, unsigned int len);
59
void ff_apply_window_int16_sse2(int16_t *output, const int16_t *input,
60
                                const int16_t *window, unsigned int len);
61
void ff_apply_window_int16_ssse3(int16_t *output, const int16_t *input,
62
                                 const int16_t *window, unsigned int len);
63
void ff_apply_window_int16_ssse3_atom(int16_t *output, const int16_t *input,
64
                                      const int16_t *window, unsigned int len);
65
66
61
av_cold void ff_ac3dsp_init_x86(AC3DSPContext *c, int bit_exact)
67
{
68
61
    int cpu_flags = av_get_cpu_flags();
69
70
61
    if (EXTERNAL_MMX(cpu_flags)) {
71
12
        c->ac3_exponent_min = ff_ac3_exponent_min_mmx;
72
12
        c->ac3_max_msb_abs_int16 = ff_ac3_max_msb_abs_int16_mmx;
73
12
        c->ac3_lshift_int16 = ff_ac3_lshift_int16_mmx;
74
12
        c->ac3_rshift_int32 = ff_ac3_rshift_int32_mmx;
75
    }
76
61
    if (EXTERNAL_AMD3DNOW(cpu_flags)) {
77
        if (!bit_exact) {
78
            c->float_to_fixed24 = ff_float_to_fixed24_3dnow;
79
        }
80
    }
81
61
    if (EXTERNAL_MMXEXT(cpu_flags)) {
82
12
        c->ac3_exponent_min = ff_ac3_exponent_min_mmxext;
83
12
        c->ac3_max_msb_abs_int16 = ff_ac3_max_msb_abs_int16_mmxext;
84
12
        if (bit_exact) {
85
            c->apply_window_int16 = ff_apply_window_int16_mmxext;
86
        } else {
87
12
            c->apply_window_int16 = ff_apply_window_int16_round_mmxext;
88
        }
89
    }
90
61
    if (EXTERNAL_SSE(cpu_flags)) {
91
12
        c->float_to_fixed24 = ff_float_to_fixed24_sse;
92
    }
93
61
    if (EXTERNAL_SSE2(cpu_flags)) {
94
12
        c->ac3_exponent_min = ff_ac3_exponent_min_sse2;
95
12
        c->ac3_max_msb_abs_int16 = ff_ac3_max_msb_abs_int16_sse2;
96
12
        c->float_to_fixed24 = ff_float_to_fixed24_sse2;
97
12
        c->compute_mantissa_size = ff_ac3_compute_mantissa_size_sse2;
98
12
        c->extract_exponents = ff_ac3_extract_exponents_sse2;
99
12
        if (bit_exact) {
100
            c->apply_window_int16 = ff_apply_window_int16_sse2;
101
        }
102
    }
103
104

61
    if (EXTERNAL_SSE2_FAST(cpu_flags)) {
105
12
        c->ac3_lshift_int16 = ff_ac3_lshift_int16_sse2;
106
12
        c->ac3_rshift_int32 = ff_ac3_rshift_int32_sse2;
107
12
        if (!bit_exact) {
108
12
            c->apply_window_int16 = ff_apply_window_int16_round_sse2;
109
        }
110
    }
111
112
61
    if (EXTERNAL_SSSE3(cpu_flags)) {
113
12
        c->ac3_max_msb_abs_int16 = ff_ac3_max_msb_abs_int16_ssse3;
114
12
        if (cpu_flags & AV_CPU_FLAG_ATOM) {
115
            c->apply_window_int16 = ff_apply_window_int16_ssse3_atom;
116
        } else {
117
12
            c->extract_exponents = ff_ac3_extract_exponents_ssse3;
118
12
            c->apply_window_int16 = ff_apply_window_int16_ssse3;
119
        }
120
    }
121
61
}
122
123
#define DOWNMIX_FUNC_OPT(ch, opt)                                       \
124
void ff_ac3_downmix_ ## ch ## _to_1_ ## opt(float **samples,            \
125
                                            float **matrix, int len);   \
126
void ff_ac3_downmix_ ## ch ## _to_2_ ## opt(float **samples,            \
127
                                            float **matrix, int len);
128
129
#define DOWNMIX_FUNCS(opt)   \
130
    DOWNMIX_FUNC_OPT(3, opt) \
131
    DOWNMIX_FUNC_OPT(4, opt) \
132
    DOWNMIX_FUNC_OPT(5, opt) \
133
    DOWNMIX_FUNC_OPT(6, opt)
134
135
DOWNMIX_FUNCS(sse)
136
DOWNMIX_FUNCS(avx)
137
DOWNMIX_FUNCS(fma3)
138
139
4
void ff_ac3dsp_set_downmix_x86(AC3DSPContext *c)
140
{
141
4
    int cpu_flags = av_get_cpu_flags();
142
143
#define SET_DOWNMIX(ch, suf, SUF)                                       \
144
    if (ch == c->in_channels) {                                         \
145
        if (EXTERNAL_ ## SUF (cpu_flags)) {                             \
146
            if (c->out_channels == 1)                                   \
147
                c->downmix = ff_ac3_downmix_ ## ch ## _to_1_ ## suf;    \
148
            else                                                        \
149
                c->downmix = ff_ac3_downmix_ ## ch ## _to_2_ ## suf;    \
150
        }                                                               \
151
    }
152
153
#define SET_DOWNMIX_ALL(suf, SUF)                   \
154
    SET_DOWNMIX(3, suf, SUF)                        \
155
    SET_DOWNMIX(4, suf, SUF)                        \
156
    SET_DOWNMIX(5, suf, SUF)                        \
157
    SET_DOWNMIX(6, suf, SUF)
158
159






4
    SET_DOWNMIX_ALL(sse,  SSE)
160
4
    if (!(cpu_flags & AV_CPU_FLAG_AVXSLOW)) {
161






4
        SET_DOWNMIX_ALL(avx,  AVX)
162






4
        SET_DOWNMIX_ALL(fma3, FMA3)
163
    }
164
4
}