x86/mpegaudiodec: fix compilation failure on cygwin with undefined imdct36_blocks_avx
[ffmpeg.git] / libavcodec / x86 / mpegaudiodec.c
1 /*
2  * MMX optimized MP3 decoding functions
3  * Copyright (c) 2010 Vitor Sessak
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/cpu.h"
23 #include "libavutil/x86/asm.h"
24 #include "libavutil/x86/cpu.h"
25 #include "libavcodec/dsputil.h"
26 #include "libavcodec/mpegaudiodsp.h"
27
28 void ff_imdct36_float_sse(float *out, float *buf, float *in, float *win);
29 void ff_imdct36_float_sse2(float *out, float *buf, float *in, float *win);
30 void ff_imdct36_float_sse3(float *out, float *buf, float *in, float *win);
31 void ff_imdct36_float_ssse3(float *out, float *buf, float *in, float *win);
32 void ff_imdct36_float_avx(float *out, float *buf, float *in, float *win);
33 void ff_four_imdct36_float_sse(float *out, float *buf, float *in, float *win,
34                                float *tmpbuf);
35 void ff_four_imdct36_float_avx(float *out, float *buf, float *in, float *win,
36                                float *tmpbuf);
37
38 DECLARE_ALIGNED(16, static float, mdct_win_sse)[2][4][4*40];
39
40 #if HAVE_SSE2_INLINE
41
42 #define MACS(rt, ra, rb) rt+=(ra)*(rb)
43 #define MLSS(rt, ra, rb) rt-=(ra)*(rb)
44
45 #define SUM8(op, sum, w, p)               \
46 {                                         \
47     op(sum, (w)[0 * 64], (p)[0 * 64]);    \
48     op(sum, (w)[1 * 64], (p)[1 * 64]);    \
49     op(sum, (w)[2 * 64], (p)[2 * 64]);    \
50     op(sum, (w)[3 * 64], (p)[3 * 64]);    \
51     op(sum, (w)[4 * 64], (p)[4 * 64]);    \
52     op(sum, (w)[5 * 64], (p)[5 * 64]);    \
53     op(sum, (w)[6 * 64], (p)[6 * 64]);    \
54     op(sum, (w)[7 * 64], (p)[7 * 64]);    \
55 }
56
57 static void apply_window(const float *buf, const float *win1,
58                          const float *win2, float *sum1, float *sum2, int len)
59 {
60     x86_reg count = - 4*len;
61     const float *win1a = win1+len;
62     const float *win2a = win2+len;
63     const float *bufa  = buf+len;
64     float *sum1a = sum1+len;
65     float *sum2a = sum2+len;
66
67
68 #define MULT(a, b)                                 \
69     "movaps " #a "(%1,%0), %%xmm1           \n\t"  \
70     "movaps " #a "(%3,%0), %%xmm2           \n\t"  \
71     "mulps         %%xmm2, %%xmm1           \n\t"  \
72     "subps         %%xmm1, %%xmm0           \n\t"  \
73     "mulps  " #b "(%2,%0), %%xmm2           \n\t"  \
74     "subps         %%xmm2, %%xmm4           \n\t"  \
75
76     __asm__ volatile(
77             "1:                                   \n\t"
78             "xorps       %%xmm0, %%xmm0           \n\t"
79             "xorps       %%xmm4, %%xmm4           \n\t"
80
81             MULT(   0,   0)
82             MULT( 256,  64)
83             MULT( 512, 128)
84             MULT( 768, 192)
85             MULT(1024, 256)
86             MULT(1280, 320)
87             MULT(1536, 384)
88             MULT(1792, 448)
89
90             "movaps      %%xmm0, (%4,%0)          \n\t"
91             "movaps      %%xmm4, (%5,%0)          \n\t"
92             "add            $16,  %0              \n\t"
93             "jl              1b                   \n\t"
94             :"+&r"(count)
95             :"r"(win1a), "r"(win2a), "r"(bufa), "r"(sum1a), "r"(sum2a)
96             );
97
98 #undef MULT
99 }
100
101 static void apply_window_mp3(float *in, float *win, int *unused, float *out,
102                              int incr)
103 {
104     LOCAL_ALIGNED_16(float, suma, [17]);
105     LOCAL_ALIGNED_16(float, sumb, [17]);
106     LOCAL_ALIGNED_16(float, sumc, [17]);
107     LOCAL_ALIGNED_16(float, sumd, [17]);
108
109     float sum;
110
111     /* copy to avoid wrap */
112     __asm__ volatile(
113             "movaps    0(%0), %%xmm0   \n\t" \
114             "movaps   16(%0), %%xmm1   \n\t" \
115             "movaps   32(%0), %%xmm2   \n\t" \
116             "movaps   48(%0), %%xmm3   \n\t" \
117             "movaps   %%xmm0,   0(%1) \n\t" \
118             "movaps   %%xmm1,  16(%1) \n\t" \
119             "movaps   %%xmm2,  32(%1) \n\t" \
120             "movaps   %%xmm3,  48(%1) \n\t" \
121             "movaps   64(%0), %%xmm0   \n\t" \
122             "movaps   80(%0), %%xmm1   \n\t" \
123             "movaps   96(%0), %%xmm2   \n\t" \
124             "movaps  112(%0), %%xmm3   \n\t" \
125             "movaps   %%xmm0,  64(%1) \n\t" \
126             "movaps   %%xmm1,  80(%1) \n\t" \
127             "movaps   %%xmm2,  96(%1) \n\t" \
128             "movaps   %%xmm3, 112(%1) \n\t"
129             ::"r"(in), "r"(in+512)
130             :"memory"
131             );
132
133     apply_window(in + 16, win     , win + 512, suma, sumc, 16);
134     apply_window(in + 32, win + 48, win + 640, sumb, sumd, 16);
135
136     SUM8(MACS, suma[0], win + 32, in + 48);
137
138     sumc[ 0] = 0;
139     sumb[16] = 0;
140     sumd[16] = 0;
141
142 #define SUMS(suma, sumb, sumc, sumd, out1, out2)               \
143             "movups " #sumd "(%4),       %%xmm0          \n\t" \
144             "shufps         $0x1b,       %%xmm0, %%xmm0  \n\t" \
145             "subps  " #suma "(%1),       %%xmm0          \n\t" \
146             "movaps        %%xmm0," #out1 "(%0)          \n\t" \
147 \
148             "movups " #sumc "(%3),       %%xmm0          \n\t" \
149             "shufps         $0x1b,       %%xmm0, %%xmm0  \n\t" \
150             "addps  " #sumb "(%2),       %%xmm0          \n\t" \
151             "movaps        %%xmm0," #out2 "(%0)          \n\t"
152
153     if (incr == 1) {
154         __asm__ volatile(
155             SUMS( 0, 48,  4, 52,  0, 112)
156             SUMS(16, 32, 20, 36, 16,  96)
157             SUMS(32, 16, 36, 20, 32,  80)
158             SUMS(48,  0, 52,  4, 48,  64)
159
160             :"+&r"(out)
161             :"r"(&suma[0]), "r"(&sumb[0]), "r"(&sumc[0]), "r"(&sumd[0])
162             :"memory"
163             );
164         out += 16*incr;
165     } else {
166         int j;
167         float *out2 = out + 32 * incr;
168         out[0  ]  = -suma[   0];
169         out += incr;
170         out2 -= incr;
171         for(j=1;j<16;j++) {
172             *out  = -suma[   j] + sumd[16-j];
173             *out2 =  sumb[16-j] + sumc[   j];
174             out  += incr;
175             out2 -= incr;
176         }
177     }
178
179     sum = 0;
180     SUM8(MLSS, sum, win + 16 + 32, in + 32);
181     *out = sum;
182 }
183
184 #endif /* HAVE_SSE2_INLINE */
185
186 #if HAVE_YASM
187 #define DECL_IMDCT_BLOCKS(CPU1, CPU2)                                       \
188 static void imdct36_blocks_ ## CPU1(float *out, float *buf, float *in,      \
189                                int count, int switch_point, int block_type) \
190 {                                                                           \
191     int align_end = count - (count & 3);                                \
192     int j;                                                              \
193     for (j = 0; j < align_end; j+= 4) {                                 \
194         LOCAL_ALIGNED_16(float, tmpbuf, [1024]);                        \
195         float *win = mdct_win_sse[switch_point && j < 4][block_type];   \
196         /* apply window & overlap with previous buffer */               \
197                                                                         \
198         /* select window */                                             \
199         ff_four_imdct36_float_ ## CPU2(out, buf, in, win, tmpbuf);      \
200         in      += 4*18;                                                \
201         buf     += 4*18;                                                \
202         out     += 4;                                                   \
203     }                                                                   \
204     for (; j < count; j++) {                                            \
205         /* apply window & overlap with previous buffer */               \
206                                                                         \
207         /* select window */                                             \
208         int win_idx = (switch_point && j < 2) ? 0 : block_type;         \
209         float *win = ff_mdct_win_float[win_idx + (4 & -(j & 1))];       \
210                                                                         \
211         ff_imdct36_float_ ## CPU1(out, buf, in, win);                   \
212                                                                         \
213         in  += 18;                                                      \
214         buf++;                                                          \
215         out++;                                                          \
216     }                                                                   \
217 }
218
219 #if HAVE_SSE
220 DECL_IMDCT_BLOCKS(sse,sse)
221 DECL_IMDCT_BLOCKS(sse2,sse)
222 DECL_IMDCT_BLOCKS(sse3,sse)
223 DECL_IMDCT_BLOCKS(ssse3,sse)
224 #endif
225 #if HAVE_AVX_EXTERNAL
226 DECL_IMDCT_BLOCKS(avx,avx)
227 #endif
228 #endif /* HAVE_YASM */
229
230 void ff_mpadsp_init_mmx(MPADSPContext *s)
231 {
232     int mm_flags = av_get_cpu_flags();
233
234     int i, j;
235     for (j = 0; j < 4; j++) {
236         for (i = 0; i < 40; i ++) {
237             mdct_win_sse[0][j][4*i    ] = ff_mdct_win_float[j    ][i];
238             mdct_win_sse[0][j][4*i + 1] = ff_mdct_win_float[j + 4][i];
239             mdct_win_sse[0][j][4*i + 2] = ff_mdct_win_float[j    ][i];
240             mdct_win_sse[0][j][4*i + 3] = ff_mdct_win_float[j + 4][i];
241             mdct_win_sse[1][j][4*i    ] = ff_mdct_win_float[0    ][i];
242             mdct_win_sse[1][j][4*i + 1] = ff_mdct_win_float[4    ][i];
243             mdct_win_sse[1][j][4*i + 2] = ff_mdct_win_float[j    ][i];
244             mdct_win_sse[1][j][4*i + 3] = ff_mdct_win_float[j + 4][i];
245         }
246     }
247
248 #if HAVE_SSE2_INLINE
249     if (mm_flags & AV_CPU_FLAG_SSE2) {
250         s->apply_window_float = apply_window_mp3;
251     }
252 #endif /* HAVE_SSE2_INLINE */
253
254 #if HAVE_YASM
255 #if HAVE_AVX_EXTERNAL
256     if (EXTERNAL_AVX(mm_flags)) {
257         s->imdct36_blocks_float = imdct36_blocks_avx;
258     } else
259 #endif
260     if (EXTERNAL_SSSE3(mm_flags)) {
261         s->imdct36_blocks_float = imdct36_blocks_ssse3;
262     } else if (EXTERNAL_SSE3(mm_flags)) {
263         s->imdct36_blocks_float = imdct36_blocks_sse3;
264     } else if (EXTERNAL_SSE2(mm_flags)) {
265         s->imdct36_blocks_float = imdct36_blocks_sse2;
266     } else if (EXTERNAL_SSE(mm_flags)) {
267         s->imdct36_blocks_float = imdct36_blocks_sse;
268     }
269 #endif /* HAVE_YASM */
270 }