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89 lines
2.7 KiB
89 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 "common.h" |
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#include "pixelutils.h" |
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#include "internal.h" |
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#if CONFIG_PIXELUTILS |
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#include "x86/pixelutils.h" |
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static av_always_inline int sad_wxh(const uint8_t *src1, ptrdiff_t stride1, |
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const uint8_t *src2, ptrdiff_t stride2, |
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int w, int h) |
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{ |
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int x, y, sum = 0; |
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for (y = 0; y < h; y++) { |
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for (x = 0; x < w; x++) |
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sum += abs(src1[x] - src2[x]); |
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src1 += stride1; |
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src2 += stride2; |
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} |
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return sum; |
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} |
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#define DECLARE_BLOCK_FUNCTIONS(size) \ |
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static int block_sad_##size##x##size##_c(const uint8_t *src1, ptrdiff_t stride1, \ |
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const uint8_t *src2, ptrdiff_t stride2) \ |
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{ \ |
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return sad_wxh(src1, stride1, src2, stride2, size, size); \ |
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} |
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DECLARE_BLOCK_FUNCTIONS(2) |
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DECLARE_BLOCK_FUNCTIONS(4) |
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DECLARE_BLOCK_FUNCTIONS(8) |
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DECLARE_BLOCK_FUNCTIONS(16) |
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DECLARE_BLOCK_FUNCTIONS(32) |
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static const av_pixelutils_sad_fn sad_c[] = { |
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block_sad_2x2_c, |
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block_sad_4x4_c, |
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block_sad_8x8_c, |
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block_sad_16x16_c, |
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block_sad_32x32_c, |
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}; |
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#endif /* CONFIG_PIXELUTILS */ |
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av_pixelutils_sad_fn av_pixelutils_get_sad_fn(int w_bits, int h_bits, int aligned, void *log_ctx) |
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{ |
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#if !CONFIG_PIXELUTILS |
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av_log(log_ctx, AV_LOG_ERROR, "pixelutils support is required " |
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"but libavutil is not compiled with it\n"); |
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return NULL; |
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#else |
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av_pixelutils_sad_fn sad[FF_ARRAY_ELEMS(sad_c)]; |
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memcpy(sad, sad_c, sizeof(sad)); |
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if (w_bits < 1 || w_bits > FF_ARRAY_ELEMS(sad) || |
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h_bits < 1 || h_bits > FF_ARRAY_ELEMS(sad)) |
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return NULL; |
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if (w_bits != h_bits) // only squared sad for now |
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return NULL; |
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#if ARCH_X86 |
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ff_pixelutils_sad_init_x86(sad, aligned); |
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#endif |
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return sad[w_bits - 1]; |
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#endif |
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}
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