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resample_mmx.h
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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"
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, %0 \n\t"\
39  " js 1b \n\t"\
40  "pshufw $0x0E, %%mm0, %%mm1 \n\t"\
41  "paddd %%mm1, %%mm0 \n\t"\
42  "psrad $15, %%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, %0 \n\t"\
60  " js 1b \n\t"\
61  "phaddd %%xmm0, %%xmm0 \n\t"\
62  "phaddd %%xmm0, %%xmm0 \n\t"\
63  "psrad $15, %%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 );