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11 // For Open Source Computer Vision Library
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18 // Jia Haipeng, jiahaipeng95@gmail.com
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46 #include "precomp.hpp"
47 #include "opencl_kernels.hpp"
50 using namespace cv::ocl;
58 static void merge_vector_run(const oclMat *mat_src, size_t n, oclMat &mat_dst)
60 if(!mat_dst.clCxt->supportsFeature(FEATURE_CL_DOUBLE) && mat_dst.type() == CV_64F)
62 CV_Error(CV_OpenCLDoubleNotSupported, "Selected device doesn't support double");
66 Context *clCxt = mat_dst.clCxt;
67 int channels = mat_dst.oclchannels();
68 int depth = mat_dst.depth();
70 string kernelName = "merge_vector";
72 int vector_lengths[4][7] = {{0, 0, 0, 0, 0, 0, 0},
73 {2, 2, 1, 1, 1, 1, 1},
74 {4, 4, 2, 2 , 1, 1, 1},
78 size_t vector_length = vector_lengths[channels - 1][depth];
79 int offset_cols = (mat_dst.offset / mat_dst.elemSize()) & (vector_length - 1);
80 int cols = divUp(mat_dst.cols + offset_cols, vector_length);
82 size_t localThreads[3] = { 64, 4, 1 };
83 size_t globalThreads[3] = { cols, mat_dst.rows, 1 };
85 int dst_step1 = mat_dst.cols * mat_dst.elemSize();
86 vector<pair<size_t , const void *> > args;
87 args.push_back( make_pair( sizeof(cl_mem), (void *)&mat_dst.data));
88 args.push_back( make_pair( sizeof(cl_int), (void *)&mat_dst.step));
89 args.push_back( make_pair( sizeof(cl_int), (void *)&mat_dst.offset));
90 args.push_back( make_pair( sizeof(cl_mem), (void *)&mat_src[0].data));
91 args.push_back( make_pair( sizeof(cl_int), (void *)&mat_src[0].step));
92 args.push_back( make_pair( sizeof(cl_int), (void *)&mat_src[0].offset));
93 args.push_back( make_pair( sizeof(cl_mem), (void *)&mat_src[1].data));
94 args.push_back( make_pair( sizeof(cl_int), (void *)&mat_src[1].step));
95 args.push_back( make_pair( sizeof(cl_int), (void *)&mat_src[1].offset));
99 args.push_back( make_pair( sizeof(cl_mem), (void *)&mat_src[2].data));
100 args.push_back( make_pair( sizeof(cl_int), (void *)&mat_src[2].step));
101 args.push_back( make_pair( sizeof(cl_int), (void *)&mat_src[2].offset));
105 args.push_back( make_pair( sizeof(cl_mem), (void *)&mat_src[2].data));
106 args.push_back( make_pair( sizeof(cl_int), (void *)&mat_src[2].step));
107 args.push_back( make_pair( sizeof(cl_int), (void *)&mat_src[2].offset));
111 args.push_back( make_pair( sizeof(cl_mem), (void *)&mat_src[3].data));
112 args.push_back( make_pair( sizeof(cl_int), (void *)&mat_src[3].step));
113 args.push_back( make_pair( sizeof(cl_int), (void *)&mat_src[3].offset));
117 args.push_back( make_pair( sizeof(cl_int), (void *)&mat_dst.rows));
118 args.push_back( make_pair( sizeof(cl_int), (void *)&cols));
119 args.push_back( make_pair( sizeof(cl_int), (void *)&dst_step1));
121 openCLExecuteKernel(clCxt, &merge_mat, kernelName, globalThreads, localThreads, args, channels, depth);
123 static void merge(const oclMat *mat_src, size_t n, oclMat &mat_dst)
128 int depth = mat_src[0].depth();
129 Size size = mat_src[0].size();
131 int total_channels = 0;
133 for(size_t i = 0; i < n; ++i)
135 CV_Assert(depth == mat_src[i].depth());
136 CV_Assert(size == mat_src[i].size());
138 total_channels += mat_src[i].oclchannels();
141 CV_Assert(total_channels <= 4);
143 if(total_channels == 1)
145 mat_src[0].copyTo(mat_dst);
149 mat_dst.create(size, CV_MAKETYPE(depth, total_channels));
150 merge_vector_run(mat_src, n, mat_dst);
152 static void split_vector_run(const oclMat &mat_src, oclMat *mat_dst)
155 if(!mat_src.clCxt->supportsFeature(FEATURE_CL_DOUBLE) && mat_src.type() == CV_64F)
157 CV_Error(CV_OpenCLDoubleNotSupported, "Selected device doesn't support double");
161 Context *clCxt = mat_src.clCxt;
162 int channels = mat_src.oclchannels();
163 int depth = mat_src.depth();
165 string kernelName = "split_vector";
167 int vector_lengths[4][7] = {{0, 0, 0, 0, 0, 0, 0},
168 {4, 4, 2, 2, 1, 1, 1},
169 {4, 4, 2, 2 , 1, 1, 1},
170 {4, 4, 2, 2, 1, 1, 1}
173 size_t vector_length = vector_lengths[channels - 1][mat_dst[0].depth()];
175 int max_offset_cols = 0;
176 for(int i = 0; i < channels; i++)
178 int offset_cols = (mat_dst[i].offset / mat_dst[i].elemSize()) & (vector_length - 1);
179 if(max_offset_cols < offset_cols)
180 max_offset_cols = offset_cols;
183 int cols = vector_length == 1 ? divUp(mat_src.cols, vector_length)
184 : divUp(mat_src.cols + max_offset_cols, vector_length);
186 size_t localThreads[3] = { 64, 4, 1 };
187 size_t globalThreads[3] = { cols, mat_src.rows, 1 };
189 int dst_step1 = mat_dst[0].cols * mat_dst[0].elemSize();
190 vector<pair<size_t , const void *> > args;
191 args.push_back( make_pair( sizeof(cl_mem), (void *)&mat_src.data));
192 args.push_back( make_pair( sizeof(cl_int), (void *)&mat_src.step));
193 args.push_back( make_pair( sizeof(cl_int), (void *)&mat_src.offset));
194 args.push_back( make_pair( sizeof(cl_mem), (void *)&mat_dst[0].data));
195 args.push_back( make_pair( sizeof(cl_int), (void *)&mat_dst[0].step));
196 args.push_back( make_pair( sizeof(cl_int), (void *)&mat_dst[0].offset));
197 args.push_back( make_pair( sizeof(cl_mem), (void *)&mat_dst[1].data));
198 args.push_back( make_pair( sizeof(cl_int), (void *)&mat_dst[1].step));
199 args.push_back( make_pair( sizeof(cl_int), (void *)&mat_dst[1].offset));
203 args.push_back( make_pair( sizeof(cl_mem), (void *)&mat_dst[2].data));
204 args.push_back( make_pair( sizeof(cl_int), (void *)&mat_dst[2].step));
205 args.push_back( make_pair( sizeof(cl_int), (void *)&mat_dst[2].offset));
209 args.push_back( make_pair( sizeof(cl_mem), (void *)&mat_dst[3].data));
210 args.push_back( make_pair( sizeof(cl_int), (void *)&mat_dst[3].step));
211 args.push_back( make_pair( sizeof(cl_int), (void *)&mat_dst[3].offset));
214 args.push_back( make_pair( sizeof(cl_int), (void *)&mat_src.rows));
215 args.push_back( make_pair( sizeof(cl_int), (void *)&cols));
216 args.push_back( make_pair( sizeof(cl_int), (void *)&dst_step1));
218 openCLExecuteKernel(clCxt, &split_mat, kernelName, globalThreads, localThreads, args, channels, depth);
220 static void split(const oclMat &mat_src, oclMat *mat_dst)
224 int depth = mat_src.depth();
225 int num_channels = mat_src.oclchannels();
226 Size size = mat_src.size();
228 if(num_channels == 1)
230 mat_src.copyTo(mat_dst[0]);
235 for(i = 0; i < num_channels; i++)
236 mat_dst[i].create(size, CV_MAKETYPE(depth, 1));
238 split_vector_run(mat_src, mat_dst);
244 void cv::ocl::merge(const oclMat *src, size_t n, oclMat &dst)
246 split_merge::merge(src, n, dst);
248 void cv::ocl::merge(const vector<oclMat> &src, oclMat &dst)
250 split_merge::merge(&src[0], src.size(), dst);
253 void cv::ocl::split(const oclMat &src, oclMat *dst)
255 split_merge::split(src, dst);
257 void cv::ocl::split(const oclMat &src, vector<oclMat> &dst)
259 dst.resize(src.oclchannels());
260 if(src.oclchannels() > 0)
261 split_merge::split(src, &dst[0]);