ffmpeg/libavfilter/x86/vf_idet_init.c

   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 }