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/*
* software YUV to RGB converter
*
* Copyright (C) 2009 Konstantin Shishkov
*
* MMX/MMX2 template stuff (needed for fast movntq support),
* 1,4,8bpp support and context / deglobalize stuff
* by Michael Niedermayer (michaelni@gmx.at)
*
* 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 <stdio.h>
#include <stdlib.h>
#include <inttypes.h>
#include <assert.h>
#include "config.h"
#include "libswscale/rgb2rgb.h"
#include "libswscale/swscale.h"
#include "libswscale/swscale_internal.h"
#include "libavutil/x86_cpu.h"
#include "libavutil/cpu.h"
#define DITHER1XBPP // only for MMX
/* hope these constant values are cache line aligned */
DECLARE_ASM_CONST(8, uint64_t, mmx_00ffw) = 0x00ff00ff00ff00ffULL;
DECLARE_ASM_CONST(8, uint64_t, mmx_redmask) = 0xf8f8f8f8f8f8f8f8ULL;
DECLARE_ASM_CONST(8, uint64_t, mmx_grnmask) = 0xfcfcfcfcfcfcfcfcULL;
DECLARE_ASM_CONST(8, uint64_t, pb_e0) = 0xe0e0e0e0e0e0e0e0ULL;
DECLARE_ASM_CONST(8, uint64_t, pb_03) = 0x0303030303030303ULL;
DECLARE_ASM_CONST(8, uint64_t, pb_07) = 0x0707070707070707ULL;
//MMX versions
#if HAVE_MMX
#undef RENAME
#undef COMPILE_TEMPLATE_MMX2
#define COMPILE_TEMPLATE_MMX2 0
#define RENAME(a) a ## _MMX
#include "yuv2rgb_template.c"
#endif /* HAVE_MMX */
//MMX2 versions
#if HAVE_MMX2
#undef RENAME
#undef COMPILE_TEMPLATE_MMX2
#define COMPILE_TEMPLATE_MMX2 1
#define RENAME(a) a ## _MMX2
#include "yuv2rgb_template.c"
#endif /* HAVE_MMX2 */
SwsFunc ff_yuv2rgb_init_mmx(SwsContext *c)
{
int cpu_flags = av_get_cpu_flags();
if (c->srcFormat != PIX_FMT_YUV420P &&
c->srcFormat != PIX_FMT_YUVA420P)
return NULL;
if (HAVE_MMX2 && cpu_flags & AV_CPU_FLAG_MMX2) {
switch (c->dstFormat) {
case PIX_FMT_RGB24: return yuv420_rgb24_MMX2;
case PIX_FMT_BGR24: return yuv420_bgr24_MMX2;
}
}
if (HAVE_MMX && cpu_flags & AV_CPU_FLAG_MMX) {
switch (c->dstFormat) {
case PIX_FMT_RGB32:
if (c->srcFormat == PIX_FMT_YUVA420P) {
#if HAVE_7REGS && CONFIG_SWSCALE_ALPHA
return yuva420_rgb32_MMX;
#endif
break;
} else return yuv420_rgb32_MMX;
case PIX_FMT_BGR32:
if (c->srcFormat == PIX_FMT_YUVA420P) {
#if HAVE_7REGS && CONFIG_SWSCALE_ALPHA
return yuva420_bgr32_MMX;
#endif
break;
} else return yuv420_bgr32_MMX;
case PIX_FMT_RGB24: return yuv420_rgb24_MMX;
case PIX_FMT_BGR24: return yuv420_bgr24_MMX;
case PIX_FMT_RGB565: return yuv420_rgb16_MMX;
case PIX_FMT_RGB555: return yuv420_rgb15_MMX;
}
}
return NULL;
}
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