FFmpeg: libswresample/x86/resample_mmx.h Source File

resample_mmx.h

1 /*

2  * Copyright (c) 2012 Michael Niedermayer <michaelni@gmx.at>

3  *

4  * This file is part of FFmpeg.

5  *

6  * FFmpeg is free software; you can redistribute it and/or

7  * modify it under the terms of the GNU Lesser General Public

8  * License as published by the Free Software Foundation; either

9  * version 2.1 of the License, or (at your option) any later version.

10  *

11  * FFmpeg is distributed in the hope that it will be useful,

12  * but WITHOUT ANY WARRANTY; without even the implied warranty of

13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU

14  * Lesser General Public License for more details.

15  *

16  * You should have received a copy of the GNU Lesser General Public

17  * License along with FFmpeg; if not, write to the Free Software

18  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA

19  */

20 

21 #include "libavutil/x86/asm.h"

22 #include "libavutil/cpu.h"

23 #include "libswresample/swresample_internal.h"

24 

25 int swri_resample_int16_mmx2 (struct ResampleContext *c, int16_t *dst, const int16_t *src, int *consumed, int src_size, int dst_size, int update_ctx);

26 int swri_resample_int16_ssse3(struct ResampleContext *c, int16_t *dst, const int16_t *src, int *consumed, int src_size, int dst_size, int update_ctx);

27 

28  DECLARE_ALIGNED(16, const uint64_t, ff_resample_int16_rounder)[2] = { 0x0000000000004000ULL, 0x0000000000000000ULL};

29 

30  #define COMMON_CORE_INT16_MMX2 \

31  x86_reg len= -2*c->filter_length;\

32 __asm__ volatile(\

33  "movq "MANGLE(ff_resample_int16_rounder)", %%mm0 \n\t"\

34  "1: \n\t"\

35  "movq (%1, %0), %%mm1 \n\t"\

36  "pmaddwd (%2, %0), %%mm1 \n\t"\

37  "paddd %%mm1, %%mm0 \n\t"\

38  "add 8,ドル %0 \n\t"\

39  " js 1b \n\t"\

40  "pshufw 0ドルx0E, %%mm0, %%mm1 \n\t"\

41  "paddd %%mm1, %%mm0 \n\t"\

42  "psrad 15,ドル %%mm0 \n\t"\

43  "packssdw %%mm0, %%mm0 \n\t"\

44  "movd %%mm0, (%3) \n\t"\

45  : "+r" (len)\

46  : "r" (((uint8_t*)(src+sample_index))-len),\

47  "r" (((uint8_t*)filter)-len),\

48  "r" (dst+dst_index)\

49 );

50 

51  #define COMMON_CORE_INT16_SSSE3 \

52  x86_reg len= -2*c->filter_length;\

53 __asm__ volatile(\

54  "movdqa "MANGLE(ff_resample_int16_rounder)", %%xmm0 \n\t"\

55  "1: \n\t"\

56  "movdqu (%1, %0), %%xmm1 \n\t"\

57  "pmaddwd (%2, %0), %%xmm1 \n\t"\

58  "paddd %%xmm1, %%xmm0 \n\t"\

59  "add 16,ドル %0 \n\t"\

60  " js 1b \n\t"\

61  "phaddd %%xmm0, %%xmm0 \n\t"\

62  "phaddd %%xmm0, %%xmm0 \n\t"\

63  "psrad 15,ドル %%xmm0 \n\t"\

64  "packssdw %%xmm0, %%xmm0 \n\t"\

65  "movd %%xmm0, (%3) \n\t"\

66  : "+r" (len)\

67  : "r" (((uint8_t*)(src+sample_index))-len),\

68  "r" (((uint8_t*)filter)-len),\

69  "r" (dst+dst_index)\

70 );