Libav
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00001 /* 00002 * VC3/DNxHD SIMD functions 00003 * Copyright (c) 2007 Baptiste Coudurier <baptiste dot coudurier at smartjog dot com> 00004 * 00005 * VC-3 encoder funded by the British Broadcasting Corporation 00006 * 00007 * This file is part of FFmpeg. 00008 * 00009 * FFmpeg is free software; you can redistribute it and/or 00010 * modify it under the terms of the GNU Lesser General Public 00011 * License as published by the Free Software Foundation; either 00012 * version 2.1 of the License, or (at your option) any later version. 00013 * 00014 * FFmpeg is distributed in the hope that it will be useful, 00015 * but WITHOUT ANY WARRANTY; without even the implied warranty of 00016 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 00017 * Lesser General Public License for more details. 00018 * 00019 * You should have received a copy of the GNU Lesser General Public 00020 * License along with FFmpeg; if not, write to the Free Software 00021 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA 00022 */ 00023 00024 #include "libavutil/x86_cpu.h" 00025 #include "libavcodec/dnxhdenc.h" 00026 00027 static void get_pixels_8x4_sym_sse2(DCTELEM *block, const uint8_t *pixels, int line_size) 00028 { 00029 __asm__ volatile( 00030 "pxor %%xmm7, %%xmm7 \n\t" 00031 "movq (%0), %%xmm0 \n\t" 00032 "add %2, %0 \n\t" 00033 "movq (%0), %%xmm1 \n\t" 00034 "movq (%0, %2), %%xmm2 \n\t" 00035 "movq (%0, %2,2), %%xmm3 \n\t" 00036 "punpcklbw %%xmm7, %%xmm0 \n\t" 00037 "punpcklbw %%xmm7, %%xmm1 \n\t" 00038 "punpcklbw %%xmm7, %%xmm2 \n\t" 00039 "punpcklbw %%xmm7, %%xmm3 \n\t" 00040 "movdqa %%xmm0, (%1) \n\t" 00041 "movdqa %%xmm1, 16(%1) \n\t" 00042 "movdqa %%xmm2, 32(%1) \n\t" 00043 "movdqa %%xmm3, 48(%1) \n\t" 00044 "movdqa %%xmm3 , 64(%1) \n\t" 00045 "movdqa %%xmm2 , 80(%1) \n\t" 00046 "movdqa %%xmm1 , 96(%1) \n\t" 00047 "movdqa %%xmm0, 112(%1) \n\t" 00048 : "+r" (pixels) 00049 : "r" (block), "r" ((x86_reg)line_size) 00050 ); 00051 } 00052 00053 void ff_dnxhd_init_mmx(DNXHDEncContext *ctx) 00054 { 00055 if (mm_flags & FF_MM_SSE2) { 00056 ctx->get_pixels_8x4_sym = get_pixels_8x4_sym_sse2; 00057 } 00058 }