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libswscale/x86/yuv2rgb_mmx.c

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00001 /*
00002  * software YUV to RGB converter
00003  *
00004  * Copyright (C) 2009 Konstantin Shishkov
00005  *
00006  * MMX/MMX2 template stuff (needed for fast movntq support),
00007  * 1,4,8bpp support and context / deglobalize stuff
00008  * by Michael Niedermayer (michaelni@gmx.at)
00009  *
00010  * This file is part of FFmpeg.
00011  *
00012  * FFmpeg is free software; you can redistribute it and/or
00013  * modify it under the terms of the GNU Lesser General Public
00014  * License as published by the Free Software Foundation; either
00015  * version 2.1 of the License, or (at your option) any later version.
00016  *
00017  * FFmpeg is distributed in the hope that it will be useful,
00018  * but WITHOUT ANY WARRANTY; without even the implied warranty of
00019  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
00020  * Lesser General Public License for more details.
00021  *
00022  * You should have received a copy of the GNU Lesser General Public
00023  * License along with FFmpeg; if not, write to the Free Software
00024  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
00025  */
00026 
00027 #include <stdio.h>
00028 #include <stdlib.h>
00029 #include <inttypes.h>
00030 #include <assert.h>
00031 
00032 #include "config.h"
00033 #include "libswscale/rgb2rgb.h"
00034 #include "libswscale/swscale.h"
00035 #include "libswscale/swscale_internal.h"
00036 #include "libavutil/x86_cpu.h"
00037 
00038 #define DITHER1XBPP // only for MMX
00039 
00040 /* hope these constant values are cache line aligned */
00041 DECLARE_ASM_CONST(8, uint64_t, mmx_00ffw)   = 0x00ff00ff00ff00ffULL;
00042 DECLARE_ASM_CONST(8, uint64_t, mmx_redmask) = 0xf8f8f8f8f8f8f8f8ULL;
00043 DECLARE_ASM_CONST(8, uint64_t, mmx_grnmask) = 0xfcfcfcfcfcfcfcfcULL;
00044 
00045 //MMX versions
00046 #undef RENAME
00047 #undef HAVE_MMX2
00048 #undef HAVE_AMD3DNOW
00049 #define HAVE_MMX2 0
00050 #define HAVE_AMD3DNOW 0
00051 #define RENAME(a) a ## _MMX
00052 #if CONFIG_GPL
00053 #include "yuv2rgb_template.c"
00054 #else
00055 #include "yuv2rgb_template2.c"
00056 #endif
00057 
00058 //MMX2 versions
00059 #undef RENAME
00060 #undef HAVE_MMX2
00061 #define HAVE_MMX2 1
00062 #define RENAME(a) a ## _MMX2
00063 #if CONFIG_GPL
00064 #include "yuv2rgb_template.c"
00065 #else
00066 #include "yuv2rgb_template2.c"
00067 #endif
00068 
00069 SwsFunc ff_yuv2rgb_init_mmx(SwsContext *c)
00070 {
00071     if (c->flags & SWS_CPU_CAPS_MMX2) {
00072         switch (c->dstFormat) {
00073         case PIX_FMT_RGB32:
00074             if (CONFIG_SWSCALE_ALPHA && c->srcFormat == PIX_FMT_YUVA420P) {
00075                 if (HAVE_7REGS) return yuva420_rgb32_MMX2;
00076                 break;
00077             } else return yuv420_rgb32_MMX2;
00078         case PIX_FMT_BGR32:
00079             if (CONFIG_SWSCALE_ALPHA && c->srcFormat == PIX_FMT_YUVA420P) {
00080                 if (HAVE_7REGS) return yuva420_bgr32_MMX2;
00081                 break;
00082             } else return yuv420_bgr32_MMX2;
00083         case PIX_FMT_RGB24:  return yuv420_rgb24_MMX2;
00084         case PIX_FMT_BGR24:  return yuv420_bgr24_MMX2;
00085         case PIX_FMT_RGB565: return yuv420_rgb16_MMX2;
00086         case PIX_FMT_RGB555: return yuv420_rgb15_MMX2;
00087         }
00088     }
00089     if (c->flags & SWS_CPU_CAPS_MMX) {
00090         switch (c->dstFormat) {
00091         case PIX_FMT_RGB32:
00092             if (CONFIG_SWSCALE_ALPHA && c->srcFormat == PIX_FMT_YUVA420P) {
00093                 if (HAVE_7REGS) return yuva420_rgb32_MMX;
00094                 break;
00095             } else return yuv420_rgb32_MMX;
00096         case PIX_FMT_BGR32:
00097             if (CONFIG_SWSCALE_ALPHA && c->srcFormat == PIX_FMT_YUVA420P) {
00098                 if (HAVE_7REGS) return yuva420_bgr32_MMX;
00099                 break;
00100             } else return yuv420_bgr32_MMX;
00101         case PIX_FMT_RGB24:  return yuv420_rgb24_MMX;
00102         case PIX_FMT_BGR24:  return yuv420_bgr24_MMX;
00103         case PIX_FMT_RGB565: return yuv420_rgb16_MMX;
00104         case PIX_FMT_RGB555: return yuv420_rgb15_MMX;
00105         }
00106     }
00107 
00108     return NULL;
00109 }

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