Libav
audiodsp_mmx.c
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1 /*
2  * This file is part of Libav.
3  *
4  * Libav is free software; you can redistribute it and/or
5  * modify it under the terms of the GNU Lesser General Public
6  * License as published by the Free Software Foundation; either
7  * version 2.1 of the License, or (at your option) any later version.
8  *
9  * Libav is distributed in the hope that it will be useful,
10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12  * Lesser General Public License for more details.
13  *
14  * You should have received a copy of the GNU Lesser General Public
15  * License along with Libav; if not, write to the Free Software
16  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
17  */
18 
19 #include "config.h"
20 #include "libavutil/x86/asm.h"
21 #include "audiodsp.h"
22 
23 #if HAVE_INLINE_ASM
24 
25 void ff_vector_clipf_sse(float *dst, const float *src,
26  float min, float max, int len)
27 {
28  x86_reg i = (len - 16) * 4;
29  __asm__ volatile (
30  "movss %3, %%xmm4 \n\t"
31  "movss %4, %%xmm5 \n\t"
32  "shufps $0, %%xmm4, %%xmm4 \n\t"
33  "shufps $0, %%xmm5, %%xmm5 \n\t"
34  "1: \n\t"
35  "movaps (%2, %0), %%xmm0 \n\t" // 3/1 on intel
36  "movaps 16(%2, %0), %%xmm1 \n\t"
37  "movaps 32(%2, %0), %%xmm2 \n\t"
38  "movaps 48(%2, %0), %%xmm3 \n\t"
39  "maxps %%xmm4, %%xmm0 \n\t"
40  "maxps %%xmm4, %%xmm1 \n\t"
41  "maxps %%xmm4, %%xmm2 \n\t"
42  "maxps %%xmm4, %%xmm3 \n\t"
43  "minps %%xmm5, %%xmm0 \n\t"
44  "minps %%xmm5, %%xmm1 \n\t"
45  "minps %%xmm5, %%xmm2 \n\t"
46  "minps %%xmm5, %%xmm3 \n\t"
47  "movaps %%xmm0, (%1, %0) \n\t"
48  "movaps %%xmm1, 16(%1, %0) \n\t"
49  "movaps %%xmm2, 32(%1, %0) \n\t"
50  "movaps %%xmm3, 48(%1, %0) \n\t"
51  "sub $64, %0 \n\t"
52  "jge 1b \n\t"
53  : "+&r" (i)
54  : "r" (dst), "r" (src), "m" (min), "m" (max)
55  : "memory");
56 }
57 
58 #endif /* HAVE_INLINE_ASM */
void ff_vector_clipf_sse(float *dst, const float *src, float min, float max, int len)
int x86_reg
Definition: asm.h:70
int len
float min