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[libav.git] / libavcodec / x86 / vp6dsp_sse2.c
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ecb24904 1/**
ba87f080 2 * @file
ecb24904
ZM
3 * SSE2-optimized functions for the VP6 decoder
4 *
5 * Copyright (C) 2009 Zuxy Meng <zuxy.meng@gmail.com>
6 *
7 * This file is part of FFmpeg.
8 *
9 * FFmpeg is free software; you can redistribute it and/or
10 * modify it under the terms of the GNU Lesser General Public
11 * License as published by the Free Software Foundation; either
12 * version 2.1 of the License, or (at your option) any later version.
13 *
14 * FFmpeg is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
17 * Lesser General Public License for more details.
18 *
19 * You should have received a copy of the GNU Lesser General Public
20 * License along with FFmpeg; if not, write to the Free Software
21 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
22 */
23
24#include "libavutil/x86_cpu.h"
25#include "libavcodec/dsputil.h"
26#include "dsputil_mmx.h"
27#include "vp6dsp_sse2.h"
28
29#define DIAG4_SSE2(in1,in2,in3,in4) \
30 "movq "#in1"(%0), %%xmm0 \n\t" \
31 "movq "#in2"(%0), %%xmm1 \n\t" \
32 "punpcklbw %%xmm7, %%xmm0 \n\t" \
33 "punpcklbw %%xmm7, %%xmm1 \n\t" \
34 "pmullw %%xmm4, %%xmm0 \n\t" /* src[x-8 ] * biweight [0] */ \
35 "pmullw %%xmm5, %%xmm1 \n\t" /* src[x ] * biweight [1] */ \
36 "paddw %%xmm1, %%xmm0 \n\t" \
37 "movq "#in3"(%0), %%xmm1 \n\t" \
38 "movq "#in4"(%0), %%xmm2 \n\t" \
39 "punpcklbw %%xmm7, %%xmm1 \n\t" \
40 "punpcklbw %%xmm7, %%xmm2 \n\t" \
41 "pmullw %%xmm6, %%xmm1 \n\t" /* src[x+8 ] * biweight [2] */ \
42 "pmullw %%xmm3, %%xmm2 \n\t" /* src[x+16] * biweight [3] */ \
43 "paddw %%xmm2, %%xmm1 \n\t" \
44 "paddsw %%xmm1, %%xmm0 \n\t" \
45 "paddsw "MANGLE(ff_pw_64)", %%xmm0 \n\t" /* Add 64 */ \
46 "psraw $7, %%xmm0 \n\t" \
47 "packuswb %%xmm0, %%xmm0 \n\t" \
48 "movq %%xmm0, (%1) \n\t" \
49
50void ff_vp6_filter_diag4_sse2(uint8_t *dst, uint8_t *src, int stride,
51 const int16_t *h_weights,const int16_t *v_weights)
52{
53 uint8_t tmp[8*11], *t = tmp;
54 src -= stride;
55
56 __asm__ volatile(
57 "pxor %%xmm7, %%xmm7 \n\t"
58 "movq %4, %%xmm3 \n\t"
59 "pshuflw $0, %%xmm3, %%xmm4 \n\t"
60 "punpcklqdq %%xmm4, %%xmm4 \n\t"
61 "pshuflw $85, %%xmm3, %%xmm5 \n\t"
62 "punpcklqdq %%xmm5, %%xmm5 \n\t"
63 "pshuflw $170, %%xmm3, %%xmm6 \n\t"
64 "punpcklqdq %%xmm6, %%xmm6 \n\t"
65 "pshuflw $255, %%xmm3, %%xmm3 \n\t"
66 "punpcklqdq %%xmm3, %%xmm3 \n\t"
67 "1: \n\t"
68 DIAG4_SSE2(-1,0,1,2)
69 "add $8, %1 \n\t"
70 "add %2, %0 \n\t"
71 "decl %3 \n\t"
72 "jnz 1b \n\t"
73 : "+r"(src), "+r"(t)
74 : "g"((x86_reg)stride), "r"(11), "m"(*(const int64_t*)h_weights)
75 : "memory");
76
77 t = tmp + 8;
78
79 __asm__ volatile(
80 "movq %4, %%xmm3 \n\t"
81 "pshuflw $0, %%xmm3, %%xmm4 \n\t"
82 "punpcklqdq %%xmm4, %%xmm4 \n\t"
83 "pshuflw $85, %%xmm3, %%xmm5 \n\t"
84 "punpcklqdq %%xmm5, %%xmm5 \n\t"
85 "pshuflw $170, %%xmm3, %%xmm6 \n\t"
86 "punpcklqdq %%xmm6, %%xmm6 \n\t"
87 "pshuflw $255, %%xmm3, %%xmm3 \n\t"
88 "punpcklqdq %%xmm3, %%xmm3 \n\t"
89 "1: \n\t"
90 DIAG4_SSE2(-8,0,8,16)
91 "add $8, %0 \n\t"
92 "add %2, %1 \n\t"
93 "decl %3 \n\t"
94 "jnz 1b \n\t"
95 : "+r"(t), "+r"(dst)
96 : "g"((x86_reg)stride), "r"(8), "m"(*(const int64_t*)v_weights)
97 : "memory");
98}