repositories / deb_ffmpeg.git / blame
? search:
summary | shortlog | log | commit | commitdiff | tree
blob | blame (incremental) | history | HEAD
Imported Debian version 2.4.3~trusty1
[deb_ffmpeg.git] / ffmpeg / libavfilter / deshake_opencl_kernel.h
CommitLineData
2ba45a60
DM		 1/*
2 * Copyright (C) 2013 Wei Gao <weigao@multicorewareinc.com>
3 * Copyright (C) 2013 Lenny Wang
4 *
5 *
6 * This file is part of FFmpeg.
7 *
8 * FFmpeg is free software; you can redistribute it and/or
9 * modify it under the terms of the GNU Lesser General Public
10 * License as published by the Free Software Foundation; either
11 * version 2.1 of the License, or (at your option) any later version.
12 *
13 * FFmpeg is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16 * Lesser General Public License for more details.
17 *
18 * You should have received a copy of the GNU Lesser General Public
19 * License along with FFmpeg; if not, write to the Free Software
20 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
21 */
22
23#ifndef AVFILTER_DESHAKE_OPENCL_KERNEL_H
24#define AVFILTER_DESHAKE_OPENCL_KERNEL_H
25
26#include "libavutil/opencl.h"
27
28const char *ff_kernel_deshake_opencl = AV_OPENCL_KERNEL(
29inline unsigned char pixel(global const unsigned char *src, int x, int y,
30 int w, int h,int stride, unsigned char def)
31{
32 return (x < 0 || y < 0 || x >= w || y >= h) ? def : src[x + y * stride];
33}
34
35unsigned char interpolate_nearest(float x, float y, global const unsigned char *src,
36 int width, int height, int stride, unsigned char def)
37{
38 return pixel(src, (int)(x + 0.5f), (int)(y + 0.5f), width, height, stride, def);
39}
40
41unsigned char interpolate_bilinear(float x, float y, global const unsigned char *src,
42 int width, int height, int stride, unsigned char def)
43{
44 int x_c, x_f, y_c, y_f;
45 int v1, v2, v3, v4;
46 x_f = (int)x;
47 y_f = (int)y;
48 x_c = x_f + 1;
49 y_c = y_f + 1;
50
51 if (x_f < -1 || x_f > width || y_f < -1 || y_f > height) {
52 return def;
53 } else {
54 v4 = pixel(src, x_f, y_f, width, height, stride, def);
55 v2 = pixel(src, x_c, y_f, width, height, stride, def);
56 v3 = pixel(src, x_f, y_c, width, height, stride, def);
57 v1 = pixel(src, x_c, y_c, width, height, stride, def);
58 return (v1*(x - x_f)*(y - y_f) + v2*((x - x_f)*(y_c - y)) +
59 v3*(x_c - x)*(y - y_f) + v4*((x_c - x)*(y_c - y)));
60 }
61}
62
63unsigned char interpolate_biquadratic(float x, float y, global const unsigned char *src,
64 int width, int height, int stride, unsigned char def)
65{
66 int x_c, x_f, y_c, y_f;
67 unsigned char v1, v2, v3, v4;
68 float f1, f2, f3, f4;
69 x_f = (int)x;
70 y_f = (int)y;
71 x_c = x_f + 1;
72 y_c = y_f + 1;
73
74 if (x_f < - 1 || x_f > width || y_f < -1 || y_f > height)
75 return def;
76 else {
77 v4 = pixel(src, x_f, y_f, width, height, stride, def);
78 v2 = pixel(src, x_c, y_f, width, height, stride, def);
79 v3 = pixel(src, x_f, y_c, width, height, stride, def);
80 v1 = pixel(src, x_c, y_c, width, height, stride, def);
81
82 f1 = 1 - sqrt((x_c - x) * (y_c - y));
83 f2 = 1 - sqrt((x_c - x) * (y - y_f));
84 f3 = 1 - sqrt((x - x_f) * (y_c - y));
85 f4 = 1 - sqrt((x - x_f) * (y - y_f));
86 return (v1 * f1 + v2 * f2 + v3 * f3 + v4 * f4) / (f1 + f2 + f3 + f4);
87 }
88}
89
90inline const float clipf(float a, float amin, float amax)
91{
92 if (a < amin) return amin;
93 else if (a > amax) return amax;
94 else return a;
95}
96
97inline int mirror(int v, int m)
98{
99 while ((unsigned)v > (unsigned)m) {
100 v = -v;
101 if (v < 0)
102 v += 2 * m;
103 }
104 return v;
105}
106
107kernel void avfilter_transform_luma(global unsigned char *src,
108 global unsigned char *dst,
109 float4 matrix,
110 int interpolate,
111 int fill,
112 int src_stride_lu,
113 int dst_stride_lu,
114 int height,
115 int width)
116{
117 int x = get_global_id(0);
118 int y = get_global_id(1);
119 int idx_dst = y * dst_stride_lu + x;
120 unsigned char def = 0;
121 float x_s = x * matrix.x + y * matrix.y + matrix.z;
122 float y_s = x * (-matrix.y) + y * matrix.x + matrix.w;
123
124 if (x < width && y < height) {
125 switch (fill) {
126 case 0: //FILL_BLANK
127 def = 0;
128 break;
129 case 1: //FILL_ORIGINAL
130 def = src[y*src_stride_lu + x];
131 break;
132 case 2: //FILL_CLAMP
133 y_s = clipf(y_s, 0, height - 1);
134 x_s = clipf(x_s, 0, width - 1);
135 def = src[(int)y_s * src_stride_lu + (int)x_s];
136 break;
137 case 3: //FILL_MIRROR
138 y_s = mirror(y_s, height - 1);
139 x_s = mirror(x_s, width - 1);
140 def = src[(int)y_s * src_stride_lu + (int)x_s];
141 break;
142 }
143 switch (interpolate) {
144 case 0: //INTERPOLATE_NEAREST
145 dst[idx_dst] = interpolate_nearest(x_s, y_s, src, width, height, src_stride_lu, def);
146 break;
147 case 1: //INTERPOLATE_BILINEAR
148 dst[idx_dst] = interpolate_bilinear(x_s, y_s, src, width, height, src_stride_lu, def);
149 break;
150 case 2: //INTERPOLATE_BIQUADRATIC
151 dst[idx_dst] = interpolate_biquadratic(x_s, y_s, src, width, height, src_stride_lu, def);
152 break;
153 default:
154 return;
155 }
156 }
157}
158
159kernel void avfilter_transform_chroma(global unsigned char *src,
160 global unsigned char *dst,
161 float4 matrix,
162 int interpolate,
163 int fill,
164 int src_stride_lu,
165 int dst_stride_lu,
166 int src_stride_ch,
167 int dst_stride_ch,
168 int height,
169 int width,
170 int ch,
171 int cw)
172{
173
174 int x = get_global_id(0);
175 int y = get_global_id(1);
176 int pad_ch = get_global_size(1)>>1;
177 global unsigned char *dst_u = dst + height * dst_stride_lu;
178 global unsigned char *src_u = src + height * src_stride_lu;
179 global unsigned char *dst_v = dst_u + ch * dst_stride_ch;
180 global unsigned char *src_v = src_u + ch * src_stride_ch;
181 src = y < pad_ch ? src_u : src_v;
182 dst = y < pad_ch ? dst_u : dst_v;
183 y = select(y - pad_ch, y, y < pad_ch);
184 float x_s = x * matrix.x + y * matrix.y + matrix.z;
185 float y_s = x * (-matrix.y) + y * matrix.x + matrix.w;
186 int idx_dst = y * dst_stride_ch + x;
187 unsigned char def;
188
189 if (x < cw && y < ch) {
190 switch (fill) {
191 case 0: //FILL_BLANK
192 def = 0;
193 break;
194 case 1: //FILL_ORIGINAL
195 def = src[y*src_stride_ch + x];
196 break;
197 case 2: //FILL_CLAMP
198 y_s = clipf(y_s, 0, ch - 1);
199 x_s = clipf(x_s, 0, cw - 1);
200 def = src[(int)y_s * src_stride_ch + (int)x_s];
201 break;
202 case 3: //FILL_MIRROR
203 y_s = mirror(y_s, ch - 1);
204 x_s = mirror(x_s, cw - 1);
205 def = src[(int)y_s * src_stride_ch + (int)x_s];
206 break;
207 }
208 switch (interpolate) {
209 case 0: //INTERPOLATE_NEAREST
210 dst[idx_dst] = interpolate_nearest(x_s, y_s, src, cw, ch, src_stride_ch, def);
211 break;
212 case 1: //INTERPOLATE_BILINEAR
213 dst[idx_dst] = interpolate_bilinear(x_s, y_s, src, cw, ch, src_stride_ch, def);
214 break;
215 case 2: //INTERPOLATE_BIQUADRATIC
216 dst[idx_dst] = interpolate_biquadratic(x_s, y_s, src, cw, ch, src_stride_ch, def);
217 break;
218 default:
219 return;
220 }
221 }
222}
223);
224
225#endif /* AVFILTER_DESHAKE_OPENCL_KERNEL_H */
ffmpeg Piment Noir Debian package repository