mirror of
https://git.ffmpeg.org/ffmpeg.git
synced 2024-12-30 11:22:14 +00:00
6af3c226c3
original patch by Sebastien Lucas sebastien.lucas _at_ gmail _dot_ com Originally committed as revision 17194 to svn://svn.ffmpeg.org/ffmpeg/trunk
109 lines
5.2 KiB
C
109 lines
5.2 KiB
C
/**
|
|
* @file libavcodec/x86/vp6dsp_mmx.c
|
|
* MMX-optimized functions for the VP6 decoder
|
|
*
|
|
* Copyright (C) 2009 Sebastien Lucas <sebastien.lucas@gmail.com>
|
|
*
|
|
* This file is part of FFmpeg.
|
|
*
|
|
* FFmpeg 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.
|
|
*
|
|
* FFmpeg 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 FFmpeg; if not, write to the Free Software
|
|
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
|
|
*/
|
|
|
|
#include "libavutil/x86_cpu.h"
|
|
#include "libavcodec/dsputil.h"
|
|
#include "dsputil_mmx.h"
|
|
#include "vp6dsp_mmx.h"
|
|
|
|
|
|
#define DIAG4_MMX(in1,in2,in3,in4) \
|
|
"movq "#in1"(%0), %%mm0 \n\t" \
|
|
"movq "#in2"(%0), %%mm1 \n\t" \
|
|
"movq %%mm0, %%mm3 \n\t" \
|
|
"movq %%mm1, %%mm4 \n\t" \
|
|
"punpcklbw %%mm7, %%mm0 \n\t" \
|
|
"punpcklbw %%mm7, %%mm1 \n\t" \
|
|
"punpckhbw %%mm7, %%mm3 \n\t" \
|
|
"punpckhbw %%mm7, %%mm4 \n\t" \
|
|
"pmullw 0(%2), %%mm0 \n\t" /* src[x-8 ] * biweight [0] */ \
|
|
"pmullw 8(%2), %%mm1 \n\t" /* src[x ] * biweight [1] */ \
|
|
"pmullw 0(%2), %%mm3 \n\t" /* src[x-8 ] * biweight [0] */ \
|
|
"pmullw 8(%2), %%mm4 \n\t" /* src[x ] * biweight [1] */ \
|
|
"paddw %%mm1, %%mm0 \n\t" \
|
|
"paddw %%mm4, %%mm3 \n\t" \
|
|
"movq "#in3"(%0), %%mm1 \n\t" \
|
|
"movq "#in4"(%0), %%mm2 \n\t" \
|
|
"movq %%mm1, %%mm4 \n\t" \
|
|
"movq %%mm2, %%mm5 \n\t" \
|
|
"punpcklbw %%mm7, %%mm1 \n\t" \
|
|
"punpcklbw %%mm7, %%mm2 \n\t" \
|
|
"punpckhbw %%mm7, %%mm4 \n\t" \
|
|
"punpckhbw %%mm7, %%mm5 \n\t" \
|
|
"pmullw 16(%2), %%mm1 \n\t" /* src[x+8 ] * biweight [2] */ \
|
|
"pmullw 24(%2), %%mm2 \n\t" /* src[x+16] * biweight [3] */ \
|
|
"pmullw 16(%2), %%mm4 \n\t" /* src[x+8 ] * biweight [2] */ \
|
|
"pmullw 24(%2), %%mm5 \n\t" /* src[x+16] * biweight [3] */ \
|
|
"paddw %%mm2, %%mm1 \n\t" \
|
|
"paddw %%mm5, %%mm4 \n\t" \
|
|
"paddsw %%mm1, %%mm0 \n\t" \
|
|
"paddsw %%mm4, %%mm3 \n\t" \
|
|
"paddsw %%mm6, %%mm0 \n\t" /* Add 64 */ \
|
|
"paddsw %%mm6, %%mm3 \n\t" /* Add 64 */ \
|
|
"psraw $7, %%mm0 \n\t" \
|
|
"psraw $7, %%mm3 \n\t" \
|
|
"packuswb %%mm3, %%mm0 \n\t" \
|
|
"movq %%mm0, (%1) \n\t"
|
|
|
|
void ff_vp6_filter_diag4_mmx(uint8_t *dst, uint8_t *src, int stride,
|
|
const int16_t *h_weights, const int16_t *v_weights)
|
|
{
|
|
uint8_t tmp[8*11], *t = tmp;
|
|
int16_t weights[4*4];
|
|
int i;
|
|
src -= stride;
|
|
|
|
for (i=0; i<4*4; i++)
|
|
weights[i] = h_weights[i>>2];
|
|
|
|
__asm__ volatile(
|
|
"pxor %%mm7, %%mm7 \n\t"
|
|
"movq "MANGLE(ff_pw_64)", %%mm6 \n\t"
|
|
"1: \n\t"
|
|
DIAG4_MMX(-1,0,1,2)
|
|
"add $8, %1 \n\t"
|
|
"add %3, %0 \n\t"
|
|
"decl %4 \n\t"
|
|
"jnz 1b \n\t"
|
|
: "+r"(src), "+r"(t)
|
|
: "r"(weights), "r"((x86_reg)stride), "r"(11)
|
|
: "memory");
|
|
|
|
t = tmp + 8;
|
|
for (i=0; i<4*4; i++)
|
|
weights[i] = v_weights[i>>2];
|
|
|
|
__asm__ volatile(
|
|
"pxor %%mm7, %%mm7 \n\t"
|
|
"movq "MANGLE(ff_pw_64)", %%mm6 \n\t"
|
|
"1: \n\t"
|
|
DIAG4_MMX(-8,0,8,16)
|
|
"add $8, %0 \n\t"
|
|
"add %3, %1 \n\t"
|
|
"decl %4 \n\t"
|
|
"jnz 1b \n\t"
|
|
: "+r"(t), "+r"(dst)
|
|
: "r"(weights), "r"((x86_reg)stride), "r"(8)
|
|
: "memory");
|
|
}
|