2 * Copyright (c) 2009 Loren Merritt <lorenm@u.washington.edu>
4 * This file is part of Libav.
6 * Libav 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.
11 * Libav 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.
16 * You should have received a copy of the GNU Lesser General Public
17 * License along with Libav; if not, write to the Free Software
18 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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"
28 void ff_add_hfyu_median_pred_mmxext(uint8_t *dst, const uint8_t *top,
29 const uint8_t *diff, int w,
30 int *left, int *left_top);
32 int ff_add_hfyu_left_pred_ssse3(uint8_t *dst, const uint8_t *src,
34 int ff_add_hfyu_left_pred_sse4(uint8_t *dst, const uint8_t *src,
40 static void add_hfyu_median_pred_cmov(uint8_t *dst, const uint8_t *top,
41 const uint8_t *diff, int w,
42 int *left, int *left_top)
47 int tl = *left_top & 0xff;
52 "movzbl (%3, %4), %2 \n"
65 "add (%6, %4), %b0 \n"
66 "mov %b0, (%5, %4) \n"
69 : "+&q"(l), "+&q"(tl), "=&r"(t), "=&q"(x), "+&r"(w2)
70 : "r"(dst + w), "r"(diff + w), "rm"(top + w)
75 #endif /* HAVE_7REGS */
77 static void add_bytes_mmx(uint8_t *dst, uint8_t *src, int w)
84 "movq (%1, %0), %%mm0 \n\t"
85 "movq (%2, %0), %%mm1 \n\t"
86 "paddb %%mm0, %%mm1 \n\t"
87 "movq %%mm1, (%2, %0) \n\t"
88 "movq 8(%1, %0), %%mm0 \n\t"
89 "movq 8(%2, %0), %%mm1 \n\t"
90 "paddb %%mm0, %%mm1 \n\t"
91 "movq %%mm1, 8(%2, %0) \n\t"
97 : "r" (src), "r" (dst), "r" ((x86_reg) w - 15));
100 dst[i + 0] += src[i + 0];
103 #endif /* HAVE_INLINE_ASM */
105 av_cold void ff_huffyuvdsp_init_x86(HuffYUVDSPContext *c)
107 int cpu_flags = av_get_cpu_flags();
111 if (cpu_flags & AV_CPU_FLAG_CMOV)
112 c->add_hfyu_median_pred = add_hfyu_median_pred_cmov;
113 #endif /* HAVE_7REGS */
115 if (INLINE_MMX(cpu_flags))
116 c->add_bytes = add_bytes_mmx;
117 #endif /* HAVE_INLINE_ASM */
119 if (EXTERNAL_MMXEXT(cpu_flags)) {
120 /* slower than cmov version on AMD */
121 if (!(cpu_flags & AV_CPU_FLAG_3DNOW))
122 c->add_hfyu_median_pred = ff_add_hfyu_median_pred_mmxext;
125 if (EXTERNAL_SSSE3(cpu_flags)) {
126 c->add_hfyu_left_pred = ff_add_hfyu_left_pred_ssse3;
127 if (cpu_flags & AV_CPU_FLAG_SSE4) // not really SSE4, just slow on Conroe
128 c->add_hfyu_left_pred = ff_add_hfyu_left_pred_sse4;