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| /* |
| * Copyright (C) 2013 Wei Gao <weigao@multicorewareinc.com> |
| * |
| * This file is part of FFmpeg. |
| * |
| * FFmpeg is free software; you can redistribute it and/or |
| * modify it under the terms of the GNU Lesser General Public |
| * License as published by the Free Software Foundation; either |
| * version 2.1 of the License, or (at your option) any later version. |
| * |
| * FFmpeg is distributed in the hope that it will be useful, |
| * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| * Lesser General Public License for more details. |
| * |
| * You should have received a copy of the GNU Lesser General Public |
| * License along with FFmpeg; if not, write to the Free Software |
| * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
| */ |
| |
| #ifndef AVFILTER_UNSHARP_OPENCL_KERNEL_H |
| #define AVFILTER_UNSHARP_OPENCL_KERNEL_H |
| |
| #include "libavutil/opencl.h" |
| |
| const char *ff_kernel_unsharp_opencl = AV_OPENCL_KERNEL( |
| inline unsigned char clip_uint8(int a) |
| { |
| if (a & (~0xFF)) |
| return (-a)>>31; |
| else |
| return a; |
| } |
| |
| kernel void unsharp(global unsigned char *src, |
| global unsigned char *dst, |
| const global unsigned int *mask_lu, |
| const global unsigned int *mask_ch, |
| int amount_lu, |
| int amount_ch, |
| int step_x_lu, |
| int step_y_lu, |
| int step_x_ch, |
| int step_y_ch, |
| int scalebits_lu, |
| int scalebits_ch, |
| int halfscale_lu, |
| int halfscale_ch, |
| int src_stride_lu, |
| int src_stride_ch, |
| int dst_stride_lu, |
| int dst_stride_ch, |
| int height, |
| int width, |
| int ch, |
| int cw) |
| { |
| global unsigned char *dst_y = dst; |
| global unsigned char *dst_u = dst_y + height * dst_stride_lu; |
| global unsigned char *dst_v = dst_u + ch * dst_stride_ch; |
| |
| global unsigned char *src_y = src; |
| global unsigned char *src_u = src_y + height * src_stride_lu; |
| global unsigned char *src_v = src_u + ch * src_stride_ch; |
| |
| global unsigned char *temp_dst; |
| global unsigned char *temp_src; |
| const global unsigned int *temp_mask; |
| int global_id = get_global_id(0); |
| int i, j, x, y, temp_src_stride, temp_dst_stride, temp_height, temp_width, temp_steps_x, temp_steps_y, |
| temp_amount, temp_scalebits, temp_halfscale, sum, idx_x, idx_y, temp, res; |
| if (global_id < width * height) { |
| y = global_id / width; |
| x = global_id % width; |
| temp_dst = dst_y; |
| temp_src = src_y; |
| temp_src_stride = src_stride_lu; |
| temp_dst_stride = dst_stride_lu; |
| temp_height = height; |
| temp_width = width; |
| temp_steps_x = step_x_lu; |
| temp_steps_y = step_y_lu; |
| temp_mask = mask_lu; |
| temp_amount = amount_lu; |
| temp_scalebits = scalebits_lu; |
| temp_halfscale = halfscale_lu; |
| } else if ((global_id >= width * height) && (global_id < width * height + ch * cw)) { |
| y = (global_id - width * height) / cw; |
| x = (global_id - width * height) % cw; |
| temp_dst = dst_u; |
| temp_src = src_u; |
| temp_src_stride = src_stride_ch; |
| temp_dst_stride = dst_stride_ch; |
| temp_height = ch; |
| temp_width = cw; |
| temp_steps_x = step_x_ch; |
| temp_steps_y = step_y_ch; |
| temp_mask = mask_ch; |
| temp_amount = amount_ch; |
| temp_scalebits = scalebits_ch; |
| temp_halfscale = halfscale_ch; |
| } else { |
| y = (global_id - width * height - ch * cw) / cw; |
| x = (global_id - width * height - ch * cw) % cw; |
| temp_dst = dst_v; |
| temp_src = src_v; |
| temp_src_stride = src_stride_ch; |
| temp_dst_stride = dst_stride_ch; |
| temp_height = ch; |
| temp_width = cw; |
| temp_steps_x = step_x_ch; |
| temp_steps_y = step_y_ch; |
| temp_mask = mask_ch; |
| temp_amount = amount_ch; |
| temp_scalebits = scalebits_ch; |
| temp_halfscale = halfscale_ch; |
| } |
| if (temp_amount) { |
| sum = 0; |
| for (j = 0; j <= 2 * temp_steps_y; j++) { |
| idx_y = (y - temp_steps_y + j) <= 0 ? 0 : (y - temp_steps_y + j) >= temp_height ? temp_height-1 : y - temp_steps_y + j; |
| for (i = 0; i <= 2 * temp_steps_x; i++) { |
| idx_x = (x - temp_steps_x + i) <= 0 ? 0 : (x - temp_steps_x + i) >= temp_width ? temp_width-1 : x - temp_steps_x + i; |
| sum += temp_mask[i + j * (2 * temp_steps_x + 1)] * temp_src[idx_x + idx_y * temp_src_stride]; |
| } |
| } |
| temp = (int)temp_src[x + y * temp_src_stride]; |
| res = temp + (((temp - (int)((sum + temp_halfscale) >> temp_scalebits)) * temp_amount) >> 16); |
| temp_dst[x + y * temp_dst_stride] = clip_uint8(res); |
| } else { |
| temp_dst[x + y * temp_dst_stride] = temp_src[x + y * temp_src_stride]; |
| } |
| } |
| |
| ); |
| |
| #endif /* AVFILTER_UNSHARP_OPENCL_KERNEL_H */ |