61 lines
2.4 KiB
C
Executable File
61 lines
2.4 KiB
C
Executable File
/*
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* This file is part of FFmpeg.
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*
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* FFmpeg is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* FFmpeg is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with FFmpeg; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#include "libavutil/cpu.h"
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#include "libavutil/x86/cpu.h"
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#include "libavfilter/scene_sad.h"
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#define SCENE_SAD_FUNC(FUNC_NAME, ASM_FUNC_NAME, MMSIZE) \
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void ASM_FUNC_NAME(SCENE_SAD_PARAMS); \
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\
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static void FUNC_NAME(SCENE_SAD_PARAMS) { \
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uint64_t sad[MMSIZE / 8] = {0}; \
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ptrdiff_t awidth = width & ~(MMSIZE - 1); \
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*sum = 0; \
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ASM_FUNC_NAME(src1, stride1, src2, stride2, awidth, height, sad); \
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for (int i = 0; i < MMSIZE / 8; i++) \
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*sum += sad[i]; \
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ff_scene_sad_c(src1 + awidth, stride1, \
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src2 + awidth, stride2, \
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width - awidth, height, sad); \
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*sum += sad[0]; \
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}
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#if HAVE_X86ASM
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SCENE_SAD_FUNC(scene_sad_sse2, ff_scene_sad_sse2, 16)
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#if HAVE_AVX2_EXTERNAL
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SCENE_SAD_FUNC(scene_sad_avx2, ff_scene_sad_avx2, 32)
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#endif
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#endif
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ff_scene_sad_fn ff_scene_sad_get_fn_x86(int depth)
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{
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#if HAVE_X86ASM
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int cpu_flags = av_get_cpu_flags();
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if (depth == 8) {
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#if HAVE_AVX2_EXTERNAL
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if (EXTERNAL_AVX2_FAST(cpu_flags))
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return scene_sad_avx2;
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#endif
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if (EXTERNAL_SSE2(cpu_flags))
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return scene_sad_sse2;
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}
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#endif
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return NULL;
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}
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