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/* |
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* Copyright (c) 2015-2016 Kieran Kunhya <kieran@kunhya.com> |
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* |
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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/attributes.h" |
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#include "libavutil/common.h" |
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#include "libavutil/avassert.h" |
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#include "cfhddsp.h" |
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static av_always_inline void filter(int16_t *output, ptrdiff_t out_stride, |
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const int16_t *low, ptrdiff_t low_stride, |
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const int16_t *high, ptrdiff_t high_stride, |
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int len, int clip) |
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{ |
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int16_t tmp; |
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int i; |
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tmp = (11*low[0*low_stride] - 4*low[1*low_stride] + low[2*low_stride] + 4) >> 3; |
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output[(2*0+0)*out_stride] = (tmp + high[0*high_stride]) >> 1; |
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✓✓ |
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if (clip) |
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output[(2*0+0)*out_stride] = av_clip_uintp2_c(output[(2*0+0)*out_stride], clip); |
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tmp = ( 5*low[0*low_stride] + 4*low[1*low_stride] - low[2*low_stride] + 4) >> 3; |
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output[(2*0+1)*out_stride] = (tmp - high[0*high_stride]) >> 1; |
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✓✓ |
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if (clip) |
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output[(2*0+1)*out_stride] = av_clip_uintp2_c(output[(2*0+1)*out_stride], clip); |
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✓✓ |
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for (i = 1; i < len - 1; i++) { |
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tmp = (low[(i-1)*low_stride] - low[(i+1)*low_stride] + 4) >> 3; |
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output[(2*i+0)*out_stride] = (tmp + low[i*low_stride] + high[i*high_stride]) >> 1; |
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✓✓ |
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if (clip) |
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output[(2*i+0)*out_stride] = av_clip_uintp2_c(output[(2*i+0)*out_stride], clip); |
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tmp = (low[(i+1)*low_stride] - low[(i-1)*low_stride] + 4) >> 3; |
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output[(2*i+1)*out_stride] = (tmp + low[i*low_stride] - high[i*high_stride]) >> 1; |
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✓✓ |
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if (clip) |
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output[(2*i+1)*out_stride] = av_clip_uintp2_c(output[(2*i+1)*out_stride], clip); |
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} |
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tmp = ( 5*low[i*low_stride] + 4*low[(i-1)*low_stride] - low[(i-2)*low_stride] + 4) >> 3; |
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output[(2*i+0)*out_stride] = (tmp + high[i*high_stride]) >> 1; |
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✓✓ |
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if (clip) |
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output[(2*i+0)*out_stride] = av_clip_uintp2_c(output[(2*i+0)*out_stride], clip); |
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tmp = (11*low[i*low_stride] - 4*low[(i-1)*low_stride] + low[(i-2)*low_stride] + 4) >> 3; |
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output[(2*i+1)*out_stride] = (tmp - high[i*high_stride]) >> 1; |
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✓✓ |
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if (clip) |
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output[(2*i+1)*out_stride] = av_clip_uintp2_c(output[(2*i+1)*out_stride], clip); |
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} |
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static void vert_filter(int16_t *output, ptrdiff_t out_stride, |
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const int16_t *low, ptrdiff_t low_stride, |
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const int16_t *high, ptrdiff_t high_stride, |
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int width, int height) |
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{ |
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✓✓ |
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for (int i = 0; i < width; i++) { |
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filter(output, out_stride, low, low_stride, high, high_stride, height, 0); |
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low++; |
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high++; |
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output++; |
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} |
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} |
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static void horiz_filter(int16_t *output, ptrdiff_t ostride, |
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const int16_t *low, ptrdiff_t lstride, |
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const int16_t *high, ptrdiff_t hstride, |
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int width, int height) |
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{ |
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✓✓ |
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for (int i = 0; i < height; i++) { |
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filter(output, 1, low, 1, high, 1, width, 0); |
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low += lstride; |
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high += hstride; |
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output += ostride * 2; |
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} |
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} |
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static void horiz_filter_clip(int16_t *output, const int16_t *low, const int16_t *high, |
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int width, int clip) |
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{ |
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filter(output, 1, low, 1, high, 1, width, clip); |
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} |
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static void horiz_filter_clip_bayer(int16_t *output, const int16_t *low, const int16_t *high, |
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int width, int clip) |
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{ |
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filter(output, 2, low, 1, high, 1, width, clip); |
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} |
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av_cold void ff_cfhddsp_init(CFHDDSPContext *c, int depth, int bayer) |
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{ |
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c->horiz_filter = horiz_filter; |
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c->vert_filter = vert_filter; |
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✗✓ |
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if (bayer) |
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c->horiz_filter_clip = horiz_filter_clip_bayer; |
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else |
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c->horiz_filter_clip = horiz_filter_clip; |
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if (ARCH_X86) |
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ff_cfhddsp_init_x86(c, depth, bayer); |
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} |