FFmpeg/libavfilter/opencl/xfade.cl
2020-02-02 14:08:56 +01:00

146 lines
4.8 KiB
Common Lisp

/*
* 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
*/
const sampler_t sampler = (CLK_NORMALIZED_COORDS_FALSE |
CLK_FILTER_NEAREST);
__kernel void fade(__write_only image2d_t dst,
__read_only image2d_t src1,
__read_only image2d_t src2,
float progress)
{
int2 p = (int2)(get_global_id(0), get_global_id(1));
float4 val1 = read_imagef(src1, sampler, p);
float4 val2 = read_imagef(src2, sampler, p);
write_imagef(dst, p, mix(val2, val1, progress));
}
__kernel void wipeleft(__write_only image2d_t dst,
__read_only image2d_t src1,
__read_only image2d_t src2,
float progress)
{
int s = (int)(get_image_dim(src1).x * progress);
int2 p = (int2)(get_global_id(0), get_global_id(1));
float4 val1 = read_imagef(src1, sampler, p);
float4 val2 = read_imagef(src2, sampler, p);
write_imagef(dst, p, p.x > s ? val2 : val1);
}
__kernel void wiperight(__write_only image2d_t dst,
__read_only image2d_t src1,
__read_only image2d_t src2,
float progress)
{
int s = (int)(get_image_dim(src1).x * (1.f - progress));
int2 p = (int2)(get_global_id(0), get_global_id(1));
float4 val1 = read_imagef(src1, sampler, p);
float4 val2 = read_imagef(src2, sampler, p);
write_imagef(dst, p, p.x > s ? val1 : val2);
}
__kernel void wipeup(__write_only image2d_t dst,
__read_only image2d_t src1,
__read_only image2d_t src2,
float progress)
{
int s = (int)(get_image_dim(src1).y * progress);
int2 p = (int2)(get_global_id(0), get_global_id(1));
float4 val1 = read_imagef(src1, sampler, p);
float4 val2 = read_imagef(src2, sampler, p);
write_imagef(dst, p, p.y > s ? val2 : val1);
}
__kernel void wipedown(__write_only image2d_t dst,
__read_only image2d_t src1,
__read_only image2d_t src2,
float progress)
{
int s = (int)(get_image_dim(src1).y * (1.f - progress));
int2 p = (int2)(get_global_id(0), get_global_id(1));
float4 val1 = read_imagef(src1, sampler, p);
float4 val2 = read_imagef(src2, sampler, p);
write_imagef(dst, p, p.y > s ? val1 : val2);
}
void slide(__write_only image2d_t dst,
__read_only image2d_t src1,
__read_only image2d_t src2,
float progress,
int2 direction)
{
int w = get_image_dim(src1).x;
int h = get_image_dim(src1).y;
int2 wh = (int2)(w, h);
int2 uv = (int2)(get_global_id(0), get_global_id(1));
int2 pi = (int2)(progress * w, progress * h);
int2 p = uv + pi * direction;
int2 f = p % wh;
f = f + (int2)(w, h) * (int2)(f.x < 0, f.y < 0);
float4 val1 = read_imagef(src1, sampler, f);
float4 val2 = read_imagef(src2, sampler, f);
write_imagef(dst, uv, mix(val1, val2, (p.y >= 0) * (h > p.y) * (p.x >= 0) * (w > p.x)));
}
__kernel void slidedown(__write_only image2d_t dst,
__read_only image2d_t src1,
__read_only image2d_t src2,
float progress)
{
int2 direction = (int2)(0, 1);
slide(dst, src1, src2, progress, direction);
}
__kernel void slideup(__write_only image2d_t dst,
__read_only image2d_t src1,
__read_only image2d_t src2,
float progress)
{
int2 direction = (int2)(0, -1);
slide(dst, src1, src2, progress, direction);
}
__kernel void slideleft(__write_only image2d_t dst,
__read_only image2d_t src1,
__read_only image2d_t src2,
float progress)
{
int2 direction = (int2)(-1, 0);
slide(dst, src1, src2, progress, direction);
}
__kernel void slideright(__write_only image2d_t dst,
__read_only image2d_t src1,
__read_only image2d_t src2,
float progress)
{
int2 direction = (int2)(1, 0);
slide(dst, src1, src2, progress, direction);
}