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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 "libavutil/attributes.h"
  20. #include "libavutil/cpu.h"
  21. #include "libavutil/mem.h"
  22. #include "libavutil/x86/asm.h"
  23. #include "libavutil/x86/cpu.h"
  24. #include "libavfilter/vf_idet.h"
  25.  
  26. #if HAVE_YASM
  27.  
  28. /* declares main callable idet_filter_line_{mmx,mmxext,sse2}() */
  29. #define FUNC_MAIN_DECL(KIND, SPAN)                                        \
  30. int ff_idet_filter_line_##KIND(const uint8_t *a, const uint8_t *b,        \
  31.                                const uint8_t *c, int w);                  \
  32. static int idet_filter_line_##KIND(const uint8_t *a, const uint8_t *b,    \
  33.                                    const uint8_t *c, int w) {             \
  34.     int sum = 0;                                                          \
  35.     const int left_over = w & (SPAN - 1);                                 \
  36.     w -= left_over;                                                       \
  37.     if (w > 0)                                                            \
  38.         sum += ff_idet_filter_line_##KIND(a, b, c, w);                    \
  39.     if (left_over > 0)                                                    \
  40.         sum += ff_idet_filter_line_c(a + w, b + w, c + w, left_over);     \
  41.     return sum;                                                           \
  42. }
  43.  
  44.  
  45. #define FUNC_MAIN_DECL_16bit(KIND, SPAN)                                       \
  46. int ff_idet_filter_line_16bit_##KIND(const uint16_t *a, const uint16_t *b,     \
  47.                                      const uint16_t *c, int w);                \
  48. static int idet_filter_line_16bit_##KIND(const uint16_t *a, const uint16_t *b, \
  49.                                          const uint16_t *c, int w) {           \
  50.     int sum = 0;                                                               \
  51.     const int left_over = w & (SPAN - 1);                                      \
  52.     w -= left_over;                                                            \
  53.     if (w > 0)                                                                 \
  54.         sum += ff_idet_filter_line_16bit_##KIND(a, b, c, w);                   \
  55.     if (left_over > 0)                                                         \
  56.         sum += ff_idet_filter_line_c_16bit(a + w, b + w, c + w, left_over);    \
  57.     return sum;                                                                \
  58. }
  59.  
  60. FUNC_MAIN_DECL(sse2, 16)
  61. FUNC_MAIN_DECL_16bit(sse2, 8)
  62. #if ARCH_X86_32
  63. FUNC_MAIN_DECL(mmx, 8)
  64. FUNC_MAIN_DECL(mmxext, 8)
  65. FUNC_MAIN_DECL_16bit(mmx, 4)
  66. #endif
  67.  
  68. #endif
  69. av_cold void ff_idet_init_x86(IDETContext *idet, int for_16b)
  70. {
  71. #if HAVE_YASM
  72.     const int cpu_flags = av_get_cpu_flags();
  73.  
  74. #if ARCH_X86_32
  75.     if (EXTERNAL_MMX(cpu_flags)) {
  76.         idet->filter_line = for_16b ? (ff_idet_filter_func)idet_filter_line_16bit_mmx : idet_filter_line_mmx;
  77.     }
  78.     if (EXTERNAL_MMXEXT(cpu_flags)) {
  79.         idet->filter_line = for_16b ? (ff_idet_filter_func)idet_filter_line_16bit_mmx : idet_filter_line_mmxext;
  80.     }
  81. #endif // ARCH_x86_32
  82.  
  83.     if (EXTERNAL_SSE2(cpu_flags)) {
  84.         idet->filter_line = for_16b ? (ff_idet_filter_func)idet_filter_line_16bit_sse2 : idet_filter_line_sse2;
  85.     }
  86. #endif // HAVE_YASM
  87. }
  88.