/* * 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 */kernel void transpose(__write_only image2d_t dst,                      __read_only image2d_t src,                      int dir) {    const sampler_t sampler = (CLK_NORMALIZED_COORDS_FALSE |                               CLK_ADDRESS_CLAMP_TO_EDGE   |                               CLK_FILTER_NEAREST);     int2 size = get_image_dim(dst);    int x = get_global_id(0);    int y = get_global_id(1);     int xin = (dir & 2) ? (size.y - 1 - y) : y;    int yin = (dir & 1) ? (size.x - 1 - x) : x;    float4 data = read_imagef(src, sampler, (int2)(xin, yin));     if (x < size.x && y < size.y)        write_imagef(dst, (int2)(x, y), data);}