118 lines
3.6 KiB
C
118 lines
3.6 KiB
C
/*
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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/MMXEXT 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 Libav.
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*
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* Libav 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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* Libav 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 Libav; 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/attributes.h"
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#include "libavutil/x86/asm.h"
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#include "libavutil/cpu.h"
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#if HAVE_INLINE_ASM
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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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#if HAVE_MMX_INLINE
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#undef RENAME
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#undef COMPILE_TEMPLATE_MMXEXT
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#define COMPILE_TEMPLATE_MMXEXT 0
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#define RENAME(a) a ## _MMX
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#include "yuv2rgb_template.c"
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#endif /* HAVE_MMX_INLINE */
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// MMXEXT versions
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#if HAVE_MMXEXT_INLINE
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#undef RENAME
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#undef COMPILE_TEMPLATE_MMXEXT
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#define COMPILE_TEMPLATE_MMXEXT 1
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#define RENAME(a) a ## _MMXEXT
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#include "yuv2rgb_template.c"
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#endif /* HAVE_MMXEXT_INLINE */
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#endif /* HAVE_INLINE_ASM */
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av_cold SwsFunc ff_yuv2rgb_init_x86(SwsContext *c)
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{
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#if HAVE_MMX_INLINE
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int cpu_flags = av_get_cpu_flags();
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if (c->srcFormat != AV_PIX_FMT_YUV420P &&
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c->srcFormat != AV_PIX_FMT_YUVA420P)
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return NULL;
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#if HAVE_MMXEXT_INLINE
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if (cpu_flags & AV_CPU_FLAG_MMXEXT) {
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switch (c->dstFormat) {
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case AV_PIX_FMT_RGB24:
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return yuv420_rgb24_MMXEXT;
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case AV_PIX_FMT_BGR24:
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return yuv420_bgr24_MMXEXT;
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}
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}
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#endif
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if (cpu_flags & AV_CPU_FLAG_MMX) {
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switch (c->dstFormat) {
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case AV_PIX_FMT_RGB32:
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if (c->srcFormat == AV_PIX_FMT_YUVA420P) {
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#if HAVE_7REGS && CONFIG_SWSCALE_ALPHA
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return yuva420_rgb32_MMX;
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#endif
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break;
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} else return yuv420_rgb32_MMX;
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case AV_PIX_FMT_BGR32:
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if (c->srcFormat == AV_PIX_FMT_YUVA420P) {
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#if HAVE_7REGS && CONFIG_SWSCALE_ALPHA
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return yuva420_bgr32_MMX;
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#endif
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break;
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} else return yuv420_bgr32_MMX;
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case AV_PIX_FMT_RGB24: return yuv420_rgb24_MMX;
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case AV_PIX_FMT_BGR24: return yuv420_bgr24_MMX;
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case AV_PIX_FMT_RGB565: return yuv420_rgb16_MMX;
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case AV_PIX_FMT_RGB555: return yuv420_rgb15_MMX;
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}
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}
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#endif /* HAVE_MMX_INLINE */
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return NULL;
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}
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