138 lines
5.0 KiB
C
138 lines
5.0 KiB
C
/*
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* Copyright (C) 2013 Wei Gao <weigao@multicorewareinc.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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#ifndef AVFILTER_UNSHARP_KERNEL_H
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#define AVFILTER_UNSHARP_KERNEL_H
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#include "libavutil/opencl.h"
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const char *ff_kernel_unsharp_opencl = AV_OPENCL_KERNEL(
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inline unsigned char clip_uint8(int a)
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{
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if (a & (~0xFF))
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return (-a)>>31;
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else
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return a;
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}
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kernel void unsharp(global unsigned char *src,
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global unsigned char *dst,
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const global unsigned int *mask_lu,
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const global unsigned int *mask_ch,
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int amount_lu,
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int amount_ch,
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int step_x_lu,
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int step_y_lu,
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int step_x_ch,
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int step_y_ch,
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int scalebits_lu,
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int scalebits_ch,
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int halfscale_lu,
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int halfscale_ch,
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int src_stride_lu,
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int src_stride_ch,
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int dst_stride_lu,
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int dst_stride_ch,
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int height,
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int width,
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int ch,
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int cw)
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{
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global unsigned char *dst_y = dst;
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global unsigned char *dst_u = dst_y + height * dst_stride_lu;
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global unsigned char *dst_v = dst_u + ch * dst_stride_ch;
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global unsigned char *src_y = src;
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global unsigned char *src_u = src_y + height * src_stride_lu;
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global unsigned char *src_v = src_u + ch * src_stride_ch;
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global unsigned char *temp_dst;
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global unsigned char *temp_src;
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const global unsigned int *temp_mask;
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int global_id = get_global_id(0);
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int i, j, x, y, temp_src_stride, temp_dst_stride, temp_height, temp_width, temp_steps_x, temp_steps_y,
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temp_amount, temp_scalebits, temp_halfscale, sum, idx_x, idx_y, temp, res;
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if (global_id < width * height) {
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y = global_id / width;
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x = global_id % width;
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temp_dst = dst_y;
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temp_src = src_y;
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temp_src_stride = src_stride_lu;
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temp_dst_stride = dst_stride_lu;
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temp_height = height;
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temp_width = width;
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temp_steps_x = step_x_lu;
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temp_steps_y = step_y_lu;
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temp_mask = mask_lu;
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temp_amount = amount_lu;
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temp_scalebits = scalebits_lu;
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temp_halfscale = halfscale_lu;
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} else if ((global_id >= width * height) && (global_id < width * height + ch * cw)) {
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y = (global_id - width * height) / cw;
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x = (global_id - width * height) % cw;
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temp_dst = dst_u;
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temp_src = src_u;
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temp_src_stride = src_stride_ch;
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temp_dst_stride = dst_stride_ch;
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temp_height = ch;
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temp_width = cw;
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temp_steps_x = step_x_ch;
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temp_steps_y = step_y_ch;
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temp_mask = mask_ch;
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temp_amount = amount_ch;
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temp_scalebits = scalebits_ch;
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temp_halfscale = halfscale_ch;
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} else {
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y = (global_id - width * height - ch * cw) / cw;
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x = (global_id - width * height - ch * cw) % cw;
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temp_dst = dst_v;
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temp_src = src_v;
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temp_src_stride = src_stride_ch;
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temp_dst_stride = dst_stride_ch;
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temp_height = ch;
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temp_width = cw;
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temp_steps_x = step_x_ch;
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temp_steps_y = step_y_ch;
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temp_mask = mask_ch;
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temp_amount = amount_ch;
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temp_scalebits = scalebits_ch;
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temp_halfscale = halfscale_ch;
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}
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if (temp_amount) {
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sum = 0;
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for (j = 0; j <= 2 * temp_steps_y; j++) {
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idx_y = (y - temp_steps_y + j) <= 0 ? 0 : (y - temp_steps_y + j) >= temp_height ? temp_height-1 : y - temp_steps_y + j;
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for (i = 0; i <= 2 * temp_steps_x; i++) {
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idx_x = (x - temp_steps_x + i) <= 0 ? 0 : (x - temp_steps_x + i) >= temp_width ? temp_width-1 : x - temp_steps_x + i;
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sum += temp_mask[i + j * (2 * temp_steps_x + 1)] * temp_src[idx_x + idx_y * temp_src_stride];
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}
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}
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temp = (int)temp_src[x + y * temp_src_stride];
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res = temp + (((temp - (int)((sum + temp_halfscale) >> temp_scalebits)) * temp_amount) >> 16);
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temp_dst[x + y * temp_dst_stride] = clip_uint8(res);
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} else {
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temp_dst[x + y * temp_dst_stride] = temp_src[x + y * temp_src_stride];
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}
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}
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);
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#endif /* AVFILTER_UNSHARP_KERNEL_H */
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