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/*
* This file is part of FFmpeg.
*
* FFmpeg is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* FFmpeg is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License along
* with FFmpeg; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include "libavutil/attributes.h"
#include "libavutil/cpu.h"
#include "libavutil/mem.h"
#include "libavutil/x86/asm.h"
#include "libavutil/x86/cpu.h"
#include "libavfilter/vf_idet.h"
/* declares main callable idet_filter_line_{mmx,mmxext,sse2}() */
#define FUNC_MAIN_DECL(KIND, SPAN) \
int ff_idet_filter_line_##KIND(const uint8_t *a, const uint8_t *b, \
const uint8_t *c, int w); \
static int idet_filter_line_##KIND(const uint8_t *a, const uint8_t *b, \
const uint8_t *c, int w) { \
int sum = 0; \
const int left_over = w & (SPAN - 1); \
w -= left_over; \
if (w > 0) \
sum += ff_idet_filter_line_##KIND(a, b, c, w); \
if (left_over > 0) \
sum += ff_idet_filter_line_c(a + w, b + w, c + w, left_over); \
return sum; \
}
#if HAVE_YASM
FUNC_MAIN_DECL(sse2, 16)
#if ARCH_X86_32
FUNC_MAIN_DECL(mmx, 8)
FUNC_MAIN_DECL(mmxext, 8)
#endif
#endif
av_cold void ff_idet_init_x86(IDETContext *idet)
{
#if HAVE_YASM
const int cpu_flags = av_get_cpu_flags();
#if ARCH_X86_32
if (EXTERNAL_MMX(cpu_flags)) {
idet->filter_line = idet_filter_line_mmx;
}
if (EXTERNAL_MMXEXT(cpu_flags)) {
idet->filter_line = idet_filter_line_mmxext;
}
#endif // ARCH_x86_32
if (EXTERNAL_SSE2(cpu_flags)) {
idet->filter_line = idet_filter_line_sse2;
}
#endif // HAVE_YASM
}
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