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/*
* 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
*/
template <typename T>
__device__ void pad_impl(T* dst, int dst_pitch, int dst_w, int dst_h,
const T* src, int src_pitch, int src_w, int src_h,
int roi_x, int roi_y, T fill_val)
{
const int x = blockIdx.x * blockDim.x + threadIdx.x;
const int y = blockIdx.y * blockDim.y + threadIdx.y;
if (x >= dst_w || y >= dst_h) {
return;
}
if (x >= roi_x && x < (roi_x + src_w) && y >= roi_y && y < (roi_y + src_h)) {
const int src_x = x - roi_x;
const int src_y = y - roi_y;
dst[y * dst_pitch + x] = src[src_y * src_pitch + src_x];
} else {
dst[y * dst_pitch + x] = fill_val;
}
}
extern "C" {
__global__ void pad_uchar(unsigned char* dst, int dst_pitch, int dst_w, int dst_h,
const unsigned char* src, int src_pitch, int src_w, int src_h,
int roi_x, int roi_y, unsigned char fill_val)
{
pad_impl<unsigned char>(dst, dst_pitch, dst_w, dst_h,
src, src_pitch, src_w, src_h,
roi_x, roi_y, fill_val);
}
__global__ void pad_uchar2(uchar2* dst, int dst_pitch, int dst_w, int dst_h,
const uchar2* src, int src_pitch, int src_w, int src_h,
int roi_x, int roi_y, uchar2 fill_val)
{
pad_impl<uchar2>(dst, dst_pitch, dst_w, dst_h,
src, src_pitch, src_w, src_h,
roi_x, roi_y, fill_val);
}
}
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