| /** |
| * @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"); |
| } |