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/*
* Copyright (c) 2009 Loren Merritt <lorenm@u.washington.edu>
*
* This file is part of Libav.
*
* Libav is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* Libav is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with Libav; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include "config.h"
#include "libavutil/attributes.h"
#include "libavutil/cpu.h"
#include "libavutil/x86/asm.h"
#include "libavutil/x86/cpu.h"
#include "libavcodec/huffyuvdsp.h"
void ff_add_hfyu_median_pred_mmxext(uint8_t *dst, const uint8_t *top,
const uint8_t *diff, int w,
int *left, int *left_top);
int ff_add_hfyu_left_pred_ssse3(uint8_t *dst, const uint8_t *src,
int w, int left);
int ff_add_hfyu_left_pred_sse4(uint8_t *dst, const uint8_t *src,
int w, int left);
#if HAVE_INLINE_ASM
#if HAVE_7REGS
static void add_hfyu_median_pred_cmov(uint8_t *dst, const uint8_t *top,
const uint8_t *diff, int w,
int *left, int *left_top)
{
x86_reg w2 = -w;
x86_reg x;
int l = *left & 0xff;
int tl = *left_top & 0xff;
int t;
__asm__ volatile (
"mov %7, %3 \n"
"1: \n"
"movzbl (%3, %4), %2 \n"
"mov %2, %k3 \n"
"sub %b1, %b3 \n"
"add %b0, %b3 \n"
"mov %2, %1 \n"
"cmp %0, %2 \n"
"cmovg %0, %2 \n"
"cmovg %1, %0 \n"
"cmp %k3, %0 \n"
"cmovg %k3, %0 \n"
"mov %7, %3 \n"
"cmp %2, %0 \n"
"cmovl %2, %0 \n"
"add (%6, %4), %b0 \n"
"mov %b0, (%5, %4) \n"
"inc %4 \n"
"jl 1b \n"
: "+&q"(l), "+&q"(tl), "=&r"(t), "=&q"(x), "+&r"(w2)
: "r"(dst + w), "r"(diff + w), "rm"(top + w)
);
*left = l;
*left_top = tl;
}
#endif /* HAVE_7REGS */
static void add_bytes_mmx(uint8_t *dst, uint8_t *src, int w)
{
x86_reg i = 0;
__asm__ volatile (
"jmp 2f \n\t"
"1: \n\t"
"movq (%1, %0), %%mm0 \n\t"
"movq (%2, %0), %%mm1 \n\t"
"paddb %%mm0, %%mm1 \n\t"
"movq %%mm1, (%2, %0) \n\t"
"movq 8(%1, %0), %%mm0 \n\t"
"movq 8(%2, %0), %%mm1 \n\t"
"paddb %%mm0, %%mm1 \n\t"
"movq %%mm1, 8(%2, %0) \n\t"
"add $16, %0 \n\t"
"2: \n\t"
"cmp %3, %0 \n\t"
"js 1b \n\t"
: "+r" (i)
: "r" (src), "r" (dst), "r" ((x86_reg) w - 15));
for (; i < w; i++)
dst[i + 0] += src[i + 0];
}
#endif /* HAVE_INLINE_ASM */
av_cold void ff_huffyuvdsp_init_x86(HuffYUVDSPContext *c)
{
int cpu_flags = av_get_cpu_flags();
#if HAVE_INLINE_ASM
#if HAVE_7REGS
if (cpu_flags & AV_CPU_FLAG_CMOV)
c->add_hfyu_median_pred = add_hfyu_median_pred_cmov;
#endif /* HAVE_7REGS */
if (INLINE_MMX(cpu_flags))
c->add_bytes = add_bytes_mmx;
#endif /* HAVE_INLINE_ASM */
if (EXTERNAL_MMXEXT(cpu_flags)) {
/* slower than cmov version on AMD */
if (!(cpu_flags & AV_CPU_FLAG_3DNOW))
c->add_hfyu_median_pred = ff_add_hfyu_median_pred_mmxext;
}
if (EXTERNAL_SSSE3(cpu_flags)) {
c->add_hfyu_left_pred = ff_add_hfyu_left_pred_ssse3;
if (cpu_flags & AV_CPU_FLAG_SSE4) // not really SSE4, just slow on Conroe
c->add_hfyu_left_pred = ff_add_hfyu_left_pred_sse4;
}
}
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