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  1. /*
  2.  * This file is part of FFmpeg.
  3.  *
  4.  * FFmpeg is free software; you can redistribute it and/or
  5.  * modify it under the terms of the GNU Lesser General Public
  6.  * License as published by the Free Software Foundation; either
  7.  * version 2.1 of the License, or (at your option) any later version.
  8.  *
  9.  * FFmpeg is distributed in the hope that it will be useful,
  10.  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11.  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  12.  * Lesser General Public License for more details.
  13.  *
  14.  * You should have received a copy of the GNU Lesser General Public
  15.  * License along with FFmpeg; if not, write to the Free Software
  16.  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
  17.  */
  18.  
  19. #include "mathops.h"
  20. #include "rnd_avg.h"
  21. #include "libavutil/intreadwrite.h"
  22.  
  23. #ifndef BIT_DEPTH
  24. #define BIT_DEPTH 8
  25. #endif
  26.  
  27. #ifdef AVCODEC_BIT_DEPTH_TEMPLATE_C
  28. #   undef pixel
  29. #   undef pixel2
  30. #   undef pixel4
  31. #   undef dctcoef
  32. #   undef INIT_CLIP
  33. #   undef no_rnd_avg_pixel4
  34. #   undef rnd_avg_pixel4
  35. #   undef AV_RN2P
  36. #   undef AV_RN4P
  37. #   undef AV_RN4PA
  38. #   undef AV_WN2P
  39. #   undef AV_WN4P
  40. #   undef AV_WN4PA
  41. #   undef CLIP
  42. #   undef FUNC
  43. #   undef FUNCC
  44. #   undef av_clip_pixel
  45. #   undef PIXEL_SPLAT_X4
  46. #else
  47. #   define AVCODEC_BIT_DEPTH_TEMPLATE_C
  48. #endif
  49.  
  50. #if BIT_DEPTH > 8
  51. #   define pixel  uint16_t
  52. #   define pixel2 uint32_t
  53. #   define pixel4 uint64_t
  54. #   define dctcoef int32_t
  55.  
  56. #   define INIT_CLIP
  57. #   define no_rnd_avg_pixel4 no_rnd_avg64
  58. #   define    rnd_avg_pixel4    rnd_avg64
  59. #   define AV_RN2P  AV_RN32
  60. #   define AV_RN4P  AV_RN64
  61. #   define AV_RN4PA AV_RN64A
  62. #   define AV_WN2P  AV_WN32
  63. #   define AV_WN4P  AV_WN64
  64. #   define AV_WN4PA AV_WN64A
  65. #   define PIXEL_SPLAT_X4(x) ((x)*0x0001000100010001ULL)
  66.  
  67. #   define av_clip_pixel(a) av_clip_uintp2(a, BIT_DEPTH)
  68. #   define CLIP(a)          av_clip_uintp2(a, BIT_DEPTH)
  69. #else
  70. #   define pixel  uint8_t
  71. #   define pixel2 uint16_t
  72. #   define pixel4 uint32_t
  73. #   define dctcoef int16_t
  74.  
  75. #   define INIT_CLIP
  76. #   define no_rnd_avg_pixel4 no_rnd_avg32
  77. #   define    rnd_avg_pixel4    rnd_avg32
  78. #   define AV_RN2P  AV_RN16
  79. #   define AV_RN4P  AV_RN32
  80. #   define AV_RN4PA AV_RN32A
  81. #   define AV_WN2P  AV_WN16
  82. #   define AV_WN4P  AV_WN32
  83. #   define AV_WN4PA AV_WN32A
  84. #   define PIXEL_SPLAT_X4(x) ((x)*0x01010101U)
  85.  
  86. #   define av_clip_pixel(a) av_clip_uint8(a)
  87. #   define CLIP(a) av_clip_uint8(a)
  88. #endif
  89.  
  90. #define FUNC3(a, b, c)  a ## _ ## b ## c
  91. #define FUNC2(a, b, c)  FUNC3(a, b, c)
  92. #define FUNC(a)  FUNC2(a, BIT_DEPTH,)
  93. #define FUNCC(a) FUNC2(a, BIT_DEPTH, _c)
  94.