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  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/cpu.h"
  38.  
  39. #if HAVE_INLINE_ASM
  40.  
  41. #define DITHER1XBPP // only for MMX
  42.  
  43. /* hope these constant values are cache line aligned */
  44. DECLARE_ASM_CONST(8, uint64_t, mmx_00ffw)   = 0x00ff00ff00ff00ffULL;
  45. DECLARE_ASM_CONST(8, uint64_t, mmx_redmask) = 0xf8f8f8f8f8f8f8f8ULL;
  46. DECLARE_ASM_CONST(8, uint64_t, mmx_grnmask) = 0xfcfcfcfcfcfcfcfcULL;
  47. DECLARE_ASM_CONST(8, uint64_t, pb_e0) = 0xe0e0e0e0e0e0e0e0ULL;
  48. DECLARE_ASM_CONST(8, uint64_t, pb_03) = 0x0303030303030303ULL;
  49. DECLARE_ASM_CONST(8, uint64_t, pb_07) = 0x0707070707070707ULL;
  50.  
  51. //MMX versions
  52. #if HAVE_MMX_INLINE
  53. #undef RENAME
  54. #undef COMPILE_TEMPLATE_MMXEXT
  55. #define COMPILE_TEMPLATE_MMXEXT 0
  56. #define RENAME(a) a ## _MMX
  57. #include "yuv2rgb_template.c"
  58. #endif /* HAVE_MMX_INLINE */
  59.  
  60. // MMXEXT versions
  61. #if HAVE_MMXEXT_INLINE
  62. #undef RENAME
  63. #undef COMPILE_TEMPLATE_MMXEXT
  64. #define COMPILE_TEMPLATE_MMXEXT 1
  65. #define RENAME(a) a ## _MMXEXT
  66. #include "yuv2rgb_template.c"
  67. #endif /* HAVE_MMXEXT_INLINE */
  68.  
  69. #endif /* HAVE_INLINE_ASM */
  70.  
  71. av_cold SwsFunc ff_yuv2rgb_init_x86(SwsContext *c)
  72. {
  73. #if HAVE_MMX_INLINE
  74.     int cpu_flags = av_get_cpu_flags();
  75.  
  76. #if HAVE_MMXEXT_INLINE
  77.     if (cpu_flags & AV_CPU_FLAG_MMXEXT) {
  78.         switch (c->dstFormat) {
  79.         case AV_PIX_FMT_RGB24:
  80.             return yuv420_rgb24_MMXEXT;
  81.         case AV_PIX_FMT_BGR24:
  82.             return yuv420_bgr24_MMXEXT;
  83.         }
  84.     }
  85. #endif
  86.  
  87.     if (cpu_flags & AV_CPU_FLAG_MMX) {
  88.         switch (c->dstFormat) {
  89.             case AV_PIX_FMT_RGB32:
  90.                 if (c->srcFormat == AV_PIX_FMT_YUVA420P) {
  91. #if HAVE_7REGS && CONFIG_SWSCALE_ALPHA
  92.                     return yuva420_rgb32_MMX;
  93. #endif
  94.                     break;
  95.                 } else return yuv420_rgb32_MMX;
  96.             case AV_PIX_FMT_BGR32:
  97.                 if (c->srcFormat == AV_PIX_FMT_YUVA420P) {
  98. #if HAVE_7REGS && CONFIG_SWSCALE_ALPHA
  99.                     return yuva420_bgr32_MMX;
  100. #endif
  101.                     break;
  102.                 } else return yuv420_bgr32_MMX;
  103.             case AV_PIX_FMT_RGB24:  return yuv420_rgb24_MMX;
  104.             case AV_PIX_FMT_BGR24:  return yuv420_bgr24_MMX;
  105.             case AV_PIX_FMT_RGB565: return yuv420_rgb16_MMX;
  106.             case AV_PIX_FMT_RGB555: return yuv420_rgb15_MMX;
  107.         }
  108.     }
  109. #endif /* HAVE_MMX_INLINE */
  110.  
  111.     return NULL;
  112. }
  113.