falkTX
/
FFmpeg
mirror of https://github.com/falkTX/FFmpeg.git
1
0
Fork 0
Code Issues 0 Releases 338 Wiki Activity
You can not select more than 25 topics Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
41838 Commits
32 Branches
766MB
Tree: 3058872c29
Branches Tags
${ item.name }
Create branch ${ searchTerm }
from '3058872c29'
${ noResults }
FFmpeg/libavcodec/x86/audiodsp_mmx.c

59 lines
2.2KB
Raw Blame History 

  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 */