ffmpeg/libswscale/x86/yuv2rgb.c

   1 /*
   2  * software YUV to RGB converter
   3  *
   4  * Copyright (C) 2009 Konstantin Shishkov
   5  *
   6  * MMX/MMXEXT template stuff (needed for fast movntq support),
   7  * 1,4,8bpp support and context / deglobalize stuff
   8  * by Michael Niedermayer (michaelni@gmx.at)
   9  *
  10  * This file is part of FFmpeg.
  11  *
  12  * FFmpeg is free software; you can redistribute it and/or
  13  * modify it under the terms of the GNU Lesser General Public
  14  * License as published by the Free Software Foundation; either
  15  * version 2.1 of the License, or (at your option) any later version.
  16  *
  17  * FFmpeg is distributed in the hope that it will be useful,
  18  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  19  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  20  * Lesser General Public License for more details.
  21  *
  22  * You should have received a copy of the GNU Lesser General Public
  23  * License along with FFmpeg; if not, write to the Free Software
  24  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
  25  */
  26
  27 #include <stdio.h>
  28 #include <stdlib.h>
  29 #include <inttypes.h>
  30
  31 #include "config.h"
  32 #include "libswscale/rgb2rgb.h"
  33 #include "libswscale/swscale.h"
  34 #include "libswscale/swscale_internal.h"
  35 #include "libavutil/attributes.h"
  36 #include "libavutil/x86/asm.h"
  37 #include "libavutil/x86/cpu.h"
  38 #include "libavutil/cpu.h"
  39
  40 #if HAVE_INLINE_ASM
  41
  42 #define DITHER1XBPP // only for MMX
  43
  44 /* hope these constant values are cache line aligned */
  45 DECLARE_ASM_CONST(8, uint64_t, mmx_00ffw)   = 0x00ff00ff00ff00ffULL;
  46 DECLARE_ASM_CONST(8, uint64_t, mmx_redmask) = 0xf8f8f8f8f8f8f8f8ULL;
  47 DECLARE_ASM_CONST(8, uint64_t, mmx_grnmask) = 0xfcfcfcfcfcfcfcfcULL;
  48 DECLARE_ASM_CONST(8, uint64_t, pb_e0) = 0xe0e0e0e0e0e0e0e0ULL;
  49 DECLARE_ASM_CONST(8, uint64_t, pb_03) = 0x0303030303030303ULL;
  50 DECLARE_ASM_CONST(8, uint64_t, pb_07) = 0x0707070707070707ULL;
  51
  52 //MMX versions
  53 #if HAVE_MMX_INLINE && HAVE_6REGS
  54 #undef RENAME
  55 #undef COMPILE_TEMPLATE_MMXEXT
  56 #define COMPILE_TEMPLATE_MMXEXT 0
  57 #define RENAME(a) a ## _mmx
  58 #include "yuv2rgb_template.c"
  59 #endif /* HAVE_MMX_INLINE && HAVE_6REGS */
  60
  61 // MMXEXT versions
  62 #if HAVE_MMXEXT_INLINE && HAVE_6REGS
  63 #undef RENAME
  64 #undef COMPILE_TEMPLATE_MMXEXT
  65 #define COMPILE_TEMPLATE_MMXEXT 1
  66 #define RENAME(a) a ## _mmxext
  67 #include "yuv2rgb_template.c"
  68 #endif /* HAVE_MMXEXT_INLINE && HAVE_6REGS */
  69
  70 #endif /* HAVE_INLINE_ASM */
  71
  72 av_cold SwsFunc ff_yuv2rgb_init_x86(SwsContext *c)
  73 {
  74 #if HAVE_MMX_INLINE && HAVE_6REGS
  75     int cpu_flags = av_get_cpu_flags();
  76
  77 #if HAVE_MMXEXT_INLINE
  78     if (INLINE_MMXEXT(cpu_flags)) {
  79         switch (c->dstFormat) {
  80         case AV_PIX_FMT_RGB24:
  81             return yuv420_rgb24_mmxext;
  82         case AV_PIX_FMT_BGR24:
  83             return yuv420_bgr24_mmxext;
  84         }
  85     }
  86 #endif
  87
  88     if (INLINE_MMX(cpu_flags)) {
  89         switch (c->dstFormat) {
  90             case AV_PIX_FMT_RGB32:
  91                 if (c->srcFormat == AV_PIX_FMT_YUVA420P) {
  92 #if HAVE_7REGS && CONFIG_SWSCALE_ALPHA
  93                     return yuva420_rgb32_mmx;
  94 #endif
  95                     break;
  96                 } else
  97                     return yuv420_rgb32_mmx;
  98             case AV_PIX_FMT_BGR32:
  99                 if (c->srcFormat == AV_PIX_FMT_YUVA420P) {
 100 #if HAVE_7REGS && CONFIG_SWSCALE_ALPHA
 101                     return yuva420_bgr32_mmx;
 102 #endif
 103                     break;
 104                 } else
 105                     return yuv420_bgr32_mmx;
 106             case AV_PIX_FMT_RGB24:
 107                 return yuv420_rgb24_mmx;
 108             case AV_PIX_FMT_BGR24:
 109                 return yuv420_bgr24_mmx;
 110             case AV_PIX_FMT_RGB565:
 111                 return yuv420_rgb16_mmx;
 112             case AV_PIX_FMT_RGB555:
 113                 return yuv420_rgb15_mmx;
 114         }
 115     }
 116 #endif /* HAVE_MMX_INLINE  && HAVE_6REGS */
 117
 118     return NULL;
 119 }