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huffyuvdsp_init.c
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1 /*
2  * Copyright (c) 2009 Loren Merritt <lorenm@u.washington.edu>
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 "config.h"
22 #include "libavutil/attributes.h"
23 #include "libavutil/cpu.h"
24 #include "libavutil/x86/asm.h"
25 #include "libavutil/x86/cpu.h"
26 #include "libavcodec/huffyuvdsp.h"
27 
28 void ff_add_bytes_mmx(uint8_t *dst, uint8_t *src, intptr_t w);
29 void ff_add_bytes_sse2(uint8_t *dst, uint8_t *src, intptr_t w);
30 
31 void ff_add_hfyu_median_pred_mmxext(uint8_t *dst, const uint8_t *top,
32  const uint8_t *diff, intptr_t w,
33  int *left, int *left_top);
34 void ff_add_hfyu_median_pred_sse2(uint8_t *dst, const uint8_t *top,
35  const uint8_t *diff, intptr_t w,
36  int *left, int *left_top);
37 
39  intptr_t w, int left);
41  intptr_t w, int left);
42 
44  intptr_t w, uint8_t *left);
46  intptr_t w, uint8_t *left);
47 
48 #if HAVE_INLINE_ASM && HAVE_7REGS && ARCH_X86_32
49 static void add_hfyu_median_pred_cmov(uint8_t *dst, const uint8_t *top,
50  const uint8_t *diff, intptr_t w,
51  int *left, int *left_top)
52 {
53  x86_reg w2 = -w;
54  x86_reg x;
55  int l = *left & 0xff;
56  int tl = *left_top & 0xff;
57  int t;
58  __asm__ volatile (
59  "mov %7, %3 \n"
60  "1: \n"
61  "movzbl (%3, %4), %2 \n"
62  "mov %2, %k3 \n"
63  "sub %b1, %b3 \n"
64  "add %b0, %b3 \n"
65  "mov %2, %1 \n"
66  "cmp %0, %2 \n"
67  "cmovg %0, %2 \n"
68  "cmovg %1, %0 \n"
69  "cmp %k3, %0 \n"
70  "cmovg %k3, %0 \n"
71  "mov %7, %3 \n"
72  "cmp %2, %0 \n"
73  "cmovl %2, %0 \n"
74  "add (%6, %4), %b0 \n"
75  "mov %b0, (%5, %4) \n"
76  "inc %4 \n"
77  "jl 1b \n"
78  : "+&q"(l), "+&q"(tl), "=&r"(t), "=&q"(x), "+&r"(w2)
79  : "r"(dst + w), "r"(diff + w), "rm"(top + w)
80  );
81  *left = l;
82  *left_top = tl;
83 }
84 #endif
85 
87 {
88  int cpu_flags = av_get_cpu_flags();
89 
90 #if HAVE_INLINE_ASM && HAVE_7REGS && ARCH_X86_32
91  if (cpu_flags & AV_CPU_FLAG_CMOV)
92  c->add_hfyu_median_pred = add_hfyu_median_pred_cmov;
93 #endif
94 
95  if (ARCH_X86_32 && EXTERNAL_MMX(cpu_flags)) {
98  }
99 
100  if (ARCH_X86_32 && EXTERNAL_MMXEXT(cpu_flags)) {
101  /* slower than cmov version on AMD */
102  if (!(cpu_flags & AV_CPU_FLAG_3DNOW))
104  }
105 
106  if (EXTERNAL_SSE2(cpu_flags)) {
110  }
111 
112  if (EXTERNAL_SSSE3(cpu_flags)) {
114  if (cpu_flags & AV_CPU_FLAG_SSE4) // not really SSE4, just slow on Conroe
116  }
117 }