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ffmpeg / libswscale / x86 / yuv2rgb_mmx.c @ 531f97b0

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/*
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 * software YUV to RGB converter
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 *
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 * Copyright (C) 2009 Konstantin Shishkov
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 *
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 * MMX/MMX2 template stuff (needed for fast movntq support),
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 * 1,4,8bpp support and context / deglobalize stuff
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 * by Michael Niedermayer (michaelni@gmx.at)
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 *
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 * This file is part of FFmpeg.
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 *
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 * FFmpeg is free software; you can redistribute it and/or
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 * modify it under the terms of the GNU Lesser General Public
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 * License as published by the Free Software Foundation; either
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 * version 2.1 of the License, or (at your option) any later version.
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 *
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 * FFmpeg is distributed in the hope that it will be useful,
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 * but WITHOUT ANY WARRANTY; without even the implied warranty of
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 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
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 * Lesser General Public License for more details.
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 *
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 * You should have received a copy of the GNU Lesser General Public
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 * License along with FFmpeg; if not, write to the Free Software
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 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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 */
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#include <stdio.h>
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#include <stdlib.h>
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#include <inttypes.h>
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#include <assert.h>
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#include "config.h"
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#include "libswscale/rgb2rgb.h"
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#include "libswscale/swscale.h"
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#include "libswscale/swscale_internal.h"
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#include "libavutil/x86_cpu.h"
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#define DITHER1XBPP // only for MMX
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/* hope these constant values are cache line aligned */
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DECLARE_ASM_CONST(8, uint64_t, mmx_00ffw)   = 0x00ff00ff00ff00ffULL;
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DECLARE_ASM_CONST(8, uint64_t, mmx_redmask) = 0xf8f8f8f8f8f8f8f8ULL;
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DECLARE_ASM_CONST(8, uint64_t, mmx_grnmask) = 0xfcfcfcfcfcfcfcfcULL;
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DECLARE_ASM_CONST(8, uint64_t, pb_e0) = 0xe0e0e0e0e0e0e0e0ULL;
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DECLARE_ASM_CONST(8, uint64_t, pb_03) = 0x0303030303030303ULL;
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DECLARE_ASM_CONST(8, uint64_t, pb_07) = 0x0707070707070707ULL;
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//MMX versions
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#undef RENAME
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#undef HAVE_MMX2
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#undef HAVE_AMD3DNOW
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#define HAVE_MMX2 0
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#define HAVE_AMD3DNOW 0
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#define RENAME(a) a ## _MMX
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#include "yuv2rgb_template2.c"
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//MMX2 versions
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#undef RENAME
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#undef HAVE_MMX2
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#define HAVE_MMX2 1
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#define RENAME(a) a ## _MMX2
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#include "yuv2rgb_template2.c"
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SwsFunc ff_yuv2rgb_init_mmx(SwsContext *c)
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{
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    if (c->flags & SWS_CPU_CAPS_MMX2) {
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        switch (c->dstFormat) {
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        case PIX_FMT_RGB32:
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            if (CONFIG_SWSCALE_ALPHA && c->srcFormat == PIX_FMT_YUVA420P) {
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                if (HAVE_7REGS) return yuva420_rgb32_MMX2;
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                break;
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            } else return yuv420_rgb32_MMX2;
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        case PIX_FMT_BGR32:
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            if (CONFIG_SWSCALE_ALPHA && c->srcFormat == PIX_FMT_YUVA420P) {
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                if (HAVE_7REGS) return yuva420_bgr32_MMX2;
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                break;
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            } else return yuv420_bgr32_MMX2;
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        case PIX_FMT_RGB24:  return yuv420_rgb24_MMX2;
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        case PIX_FMT_BGR24:  return yuv420_bgr24_MMX2;
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        case PIX_FMT_RGB565: return yuv420_rgb16_MMX2;
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        case PIX_FMT_RGB555: return yuv420_rgb15_MMX2;
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        }
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    }
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    if (c->flags & SWS_CPU_CAPS_MMX) {
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        switch (c->dstFormat) {
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        case PIX_FMT_RGB32:
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            if (CONFIG_SWSCALE_ALPHA && c->srcFormat == PIX_FMT_YUVA420P) {
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                if (HAVE_7REGS) return yuva420_rgb32_MMX;
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                break;
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            } else return yuv420_rgb32_MMX;
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        case PIX_FMT_BGR32:
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            if (CONFIG_SWSCALE_ALPHA && c->srcFormat == PIX_FMT_YUVA420P) {
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                if (HAVE_7REGS) return yuva420_bgr32_MMX;
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                break;
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            } else return yuv420_bgr32_MMX;
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        case PIX_FMT_RGB24:  return yuv420_rgb24_MMX;
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        case PIX_FMT_BGR24:  return yuv420_bgr24_MMX;
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        case PIX_FMT_RGB565: return yuv420_rgb16_MMX;
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        case PIX_FMT_RGB555: return yuv420_rgb15_MMX;
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        }
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    }
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    return NULL;
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}