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64 lines
2.7 KiB
64 lines
2.7 KiB
/* |
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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 "config.h" |
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#include "pixelutils.h" |
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#include "cpu.h" |
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int ff_pixelutils_sad_8x8_mmx(const uint8_t *src1, ptrdiff_t stride1, |
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const uint8_t *src2, ptrdiff_t stride2); |
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int ff_pixelutils_sad_8x8_mmxext(const uint8_t *src1, ptrdiff_t stride1, |
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const uint8_t *src2, ptrdiff_t stride2); |
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int ff_pixelutils_sad_16x16_mmxext(const uint8_t *src1, ptrdiff_t stride1, |
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const uint8_t *src2, ptrdiff_t stride2); |
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int ff_pixelutils_sad_16x16_sse2(const uint8_t *src1, ptrdiff_t stride1, |
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const uint8_t *src2, ptrdiff_t stride2); |
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int ff_pixelutils_sad_a_16x16_sse2(const uint8_t *src1, ptrdiff_t stride1, |
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const uint8_t *src2, ptrdiff_t stride2); |
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int ff_pixelutils_sad_u_16x16_sse2(const uint8_t *src1, ptrdiff_t stride1, |
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const uint8_t *src2, ptrdiff_t stride2); |
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void ff_pixelutils_sad_init_x86(av_pixelutils_sad_fn *sad, int aligned) |
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{ |
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int cpu_flags = av_get_cpu_flags(); |
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if (EXTERNAL_MMX(cpu_flags)) { |
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sad[2] = ff_pixelutils_sad_8x8_mmx; |
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} |
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// The best way to use SSE2 would be to do 2 SADs in parallel, |
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// but we'd have to modify the pixelutils API to return SIMD functions. |
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// It's probably not faster to shuffle data around |
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// to get two lines of 8 pixels into a single 16byte register, |
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// so just use the MMX 8x8 version even when SSE2 is available. |
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if (EXTERNAL_MMXEXT(cpu_flags)) { |
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sad[2] = ff_pixelutils_sad_8x8_mmxext; |
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sad[3] = ff_pixelutils_sad_16x16_mmxext; |
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} |
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if (EXTERNAL_SSE2(cpu_flags)) { |
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switch (aligned) { |
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case 0: sad[3] = ff_pixelutils_sad_16x16_sse2; break; // src1 unaligned, src2 unaligned |
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case 1: sad[3] = ff_pixelutils_sad_u_16x16_sse2; break; // src1 aligned, src2 unaligned |
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case 2: sad[3] = ff_pixelutils_sad_a_16x16_sse2; break; // src1 aligned, src2 aligned |
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} |
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} |
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}
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