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
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
|
/*
* x86-optimized AC-3 DSP utils
* Copyright (c) 2011 Justin Ruggles
*
* This file is part of Libav.
*
* Libav is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* Libav is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with Libav; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include "libavutil/mem.h"
#include "libavutil/x86/asm.h"
#include "libavutil/x86/cpu.h"
#include "dsputil_mmx.h"
#include "libavcodec/ac3.h"
#include "libavcodec/ac3dsp.h"
extern void ff_ac3_exponent_min_mmx (uint8_t *exp, int num_reuse_blocks, int nb_coefs);
extern void ff_ac3_exponent_min_mmxext(uint8_t *exp, int num_reuse_blocks, int nb_coefs);
extern void ff_ac3_exponent_min_sse2 (uint8_t *exp, int num_reuse_blocks, int nb_coefs);
extern int ff_ac3_max_msb_abs_int16_mmx (const int16_t *src, int len);
extern int ff_ac3_max_msb_abs_int16_mmxext(const int16_t *src, int len);
extern int ff_ac3_max_msb_abs_int16_sse2 (const int16_t *src, int len);
extern int ff_ac3_max_msb_abs_int16_ssse3(const int16_t *src, int len);
extern void ff_ac3_lshift_int16_mmx (int16_t *src, unsigned int len, unsigned int shift);
extern void ff_ac3_lshift_int16_sse2(int16_t *src, unsigned int len, unsigned int shift);
extern void ff_ac3_rshift_int32_mmx (int32_t *src, unsigned int len, unsigned int shift);
extern void ff_ac3_rshift_int32_sse2(int32_t *src, unsigned int len, unsigned int shift);
extern void ff_float_to_fixed24_3dnow(int32_t *dst, const float *src, unsigned int len);
extern void ff_float_to_fixed24_sse (int32_t *dst, const float *src, unsigned int len);
extern void ff_float_to_fixed24_sse2 (int32_t *dst, const float *src, unsigned int len);
extern int ff_ac3_compute_mantissa_size_sse2(uint16_t mant_cnt[6][16]);
extern void ff_ac3_extract_exponents_3dnow(uint8_t *exp, int32_t *coef, int nb_coefs);
extern void ff_ac3_extract_exponents_sse2 (uint8_t *exp, int32_t *coef, int nb_coefs);
extern void ff_ac3_extract_exponents_ssse3(uint8_t *exp, int32_t *coef, int nb_coefs);
#if HAVE_SSE_INLINE && HAVE_7REGS
#define IF1(x) x
#define IF0(x)
#define MIX5(mono, stereo) \
__asm__ volatile ( \
"movss 0(%1), %%xmm5 \n" \
"movss 8(%1), %%xmm6 \n" \
"movss 24(%1), %%xmm7 \n" \
"shufps $0, %%xmm5, %%xmm5 \n" \
"shufps $0, %%xmm6, %%xmm6 \n" \
"shufps $0, %%xmm7, %%xmm7 \n" \
"1: \n" \
"movaps (%0, %2), %%xmm0 \n" \
"movaps (%0, %3), %%xmm1 \n" \
"movaps (%0, %4), %%xmm2 \n" \
"movaps (%0, %5), %%xmm3 \n" \
"movaps (%0, %6), %%xmm4 \n" \
"mulps %%xmm5, %%xmm0 \n" \
"mulps %%xmm6, %%xmm1 \n" \
"mulps %%xmm5, %%xmm2 \n" \
"mulps %%xmm7, %%xmm3 \n" \
"mulps %%xmm7, %%xmm4 \n" \
stereo("addps %%xmm1, %%xmm0 \n") \
"addps %%xmm1, %%xmm2 \n" \
"addps %%xmm3, %%xmm0 \n" \
"addps %%xmm4, %%xmm2 \n" \
mono("addps %%xmm2, %%xmm0 \n") \
"movaps %%xmm0, (%0, %2) \n" \
stereo("movaps %%xmm2, (%0, %3) \n") \
"add $16, %0 \n" \
"jl 1b \n" \
: "+&r"(i) \
: "r"(matrix), \
"r"(samples[0] + len), \
"r"(samples[1] + len), \
"r"(samples[2] + len), \
"r"(samples[3] + len), \
"r"(samples[4] + len) \
: XMM_CLOBBERS("%xmm0", "%xmm1", "%xmm2", "%xmm3", \
"%xmm4", "%xmm5", "%xmm6", "%xmm7",) \
"memory" \
);
#define MIX_MISC(stereo) \
__asm__ volatile ( \
"mov %5, %2 \n" \
"1: \n" \
"mov -%c7(%6, %2, %c8), %3 \n" \
"movaps (%3, %0), %%xmm0 \n" \
stereo("movaps %%xmm0, %%xmm1 \n") \
"mulps %%xmm4, %%xmm0 \n" \
stereo("mulps %%xmm5, %%xmm1 \n") \
"2: \n" \
"mov (%6, %2, %c8), %1 \n" \
"movaps (%1, %0), %%xmm2 \n" \
stereo("movaps %%xmm2, %%xmm3 \n") \
"mulps (%4, %2, 8), %%xmm2 \n" \
stereo("mulps 16(%4, %2, 8), %%xmm3 \n") \
"addps %%xmm2, %%xmm0 \n" \
stereo("addps %%xmm3, %%xmm1 \n") \
"add $4, %2 \n" \
"jl 2b \n" \
"mov %5, %2 \n" \
stereo("mov (%6, %2, %c8), %1 \n") \
"movaps %%xmm0, (%3, %0) \n" \
stereo("movaps %%xmm1, (%1, %0) \n") \
"add $16, %0 \n" \
"jl 1b \n" \
: "+&r"(i), "=&r"(j), "=&r"(k), "=&r"(m) \
: "r"(matrix_simd + in_ch), \
"g"((intptr_t) - 4 * (in_ch - 1)), \
"r"(samp + in_ch), \
"i"(sizeof(float *)), "i"(sizeof(float *)/4) \
: "memory" \
);
static void ac3_downmix_sse(float **samples, float (*matrix)[2],
int out_ch, int in_ch, int len)
{
int (*matrix_cmp)[2] = (int(*)[2])matrix;
intptr_t i, j, k, m;
i = -len * sizeof(float);
if (in_ch == 5 && out_ch == 2 &&
!(matrix_cmp[0][1] | matrix_cmp[2][0] |
matrix_cmp[3][1] | matrix_cmp[4][0] |
(matrix_cmp[1][0] ^ matrix_cmp[1][1]) |
(matrix_cmp[0][0] ^ matrix_cmp[2][1]))) {
MIX5(IF0, IF1);
} else if (in_ch == 5 && out_ch == 1 &&
matrix_cmp[0][0] == matrix_cmp[2][0] &&
matrix_cmp[3][0] == matrix_cmp[4][0]) {
MIX5(IF1, IF0);
} else {
DECLARE_ALIGNED(16, float, matrix_simd)[AC3_MAX_CHANNELS][2][4];
float *samp[AC3_MAX_CHANNELS];
for (j = 0; j < in_ch; j++)
samp[j] = samples[j] + len;
j = 2 * in_ch * sizeof(float);
__asm__ volatile (
"1: \n"
"sub $8, %0 \n"
"movss (%2, %0), %%xmm4 \n"
"movss 4(%2, %0), %%xmm5 \n"
"shufps $0, %%xmm4, %%xmm4 \n"
"shufps $0, %%xmm5, %%xmm5 \n"
"movaps %%xmm4, (%1, %0, 4) \n"
"movaps %%xmm5, 16(%1, %0, 4) \n"
"jg 1b \n"
: "+&r"(j)
: "r"(matrix_simd), "r"(matrix)
: "memory"
);
if (out_ch == 2) {
MIX_MISC(IF1);
} else {
MIX_MISC(IF0);
}
}
}
#endif /* HAVE_SSE_INLINE && HAVE_7REGS */
av_cold void ff_ac3dsp_init_x86(AC3DSPContext *c, int bit_exact)
{
int mm_flags = av_get_cpu_flags();
if (EXTERNAL_MMX(mm_flags)) {
c->ac3_exponent_min = ff_ac3_exponent_min_mmx;
c->ac3_max_msb_abs_int16 = ff_ac3_max_msb_abs_int16_mmx;
c->ac3_lshift_int16 = ff_ac3_lshift_int16_mmx;
c->ac3_rshift_int32 = ff_ac3_rshift_int32_mmx;
}
if (EXTERNAL_AMD3DNOW(mm_flags)) {
c->extract_exponents = ff_ac3_extract_exponents_3dnow;
if (!bit_exact) {
c->float_to_fixed24 = ff_float_to_fixed24_3dnow;
}
}
if (EXTERNAL_MMXEXT(mm_flags)) {
c->ac3_exponent_min = ff_ac3_exponent_min_mmxext;
c->ac3_max_msb_abs_int16 = ff_ac3_max_msb_abs_int16_mmxext;
}
if (EXTERNAL_SSE(mm_flags)) {
c->float_to_fixed24 = ff_float_to_fixed24_sse;
}
if (EXTERNAL_SSE2(mm_flags)) {
c->ac3_exponent_min = ff_ac3_exponent_min_sse2;
c->ac3_max_msb_abs_int16 = ff_ac3_max_msb_abs_int16_sse2;
c->float_to_fixed24 = ff_float_to_fixed24_sse2;
c->compute_mantissa_size = ff_ac3_compute_mantissa_size_sse2;
c->extract_exponents = ff_ac3_extract_exponents_sse2;
if (!(mm_flags & AV_CPU_FLAG_SSE2SLOW)) {
c->ac3_lshift_int16 = ff_ac3_lshift_int16_sse2;
c->ac3_rshift_int32 = ff_ac3_rshift_int32_sse2;
}
}
if (EXTERNAL_SSSE3(mm_flags)) {
c->ac3_max_msb_abs_int16 = ff_ac3_max_msb_abs_int16_ssse3;
if (!(mm_flags & AV_CPU_FLAG_ATOM)) {
c->extract_exponents = ff_ac3_extract_exponents_ssse3;
}
}
#if HAVE_SSE_INLINE && HAVE_7REGS
if (INLINE_SSE(mm_flags)) {
c->downmix = ac3_downmix_sse;
}
#endif
}
|
