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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/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. }
  120.