Compute Library
 22.08
reorg_layer.cl
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24 #include "helpers.h"
25 
26 #if defined(DATA_TYPE) && defined(SRC_DEPTH) && defined(STRIDE)
27 
28 #define CALCULATE_SRC_COORDINATES(xo, yo, zo, xi, yi, zi) \
29  ({ \
30  int offset = zo / (int)SRC_DEPTH; \
31  xi = xo * (int)STRIDE + offset % (int)STRIDE; \
32  yi = yo * (int)STRIDE + offset / (int)STRIDE; \
33  zi = zo % SRC_DEPTH; \
34  })
35 
36 /** Performs a reorganization layer of input tensor to the output tensor when the data layout is NCHW
37  *
38  * @note The data type must be passed at compile time using -DDATA_TYPE: e.g. -DDATA_TYPE=float
39  * @note The depth of the input tensor must be passed at compile time using -DSRC_DEPTH: e.g. -DSRC_DEPTH=64
40  * @note The distance between 2 consecutive pixels along the x and y direction must be passed at compile time using -DSTRIDE: e.g. -DSTRIDE=2
41  *
42  * @param[in] src_ptr Pointer to the source tensor. Supported data types: All
43  * @param[in] src_stride_x Stride of the source tensor in X dimension (in bytes)
44  * @param[in] src_step_x src_stride_x * number of elements along X processed per workitem(in bytes)
45  * @param[in] src_stride_y Stride of the source tensor in Y dimension (in bytes)
46  * @param[in] src_step_y src_stride_y * number of elements along Y processed per workitem(in bytes)
47  * @param[in] src_stride_z Stride of the source tensor in Z dimension (in bytes)
48  * @param[in] src_step_z src_stride_z * number of elements along Z processed per workitem(in bytes)
49  * @param[in] src_offset_first_element_in_bytes The offset of the first element in the source tensor
50  * @param[out] dst_ptr Pointer to the destination tensor. Supported data types: same as @p src_ptr
51  * @param[in] dst_stride_x Stride of the destination tensor in X dimension (in bytes)
52  * @param[in] dst_step_x dst_stride_x * number of elements along X processed per workitem(in bytes)
53  * @param[in] dst_stride_y Stride of the destination tensor in Y dimension (in bytes)
54  * @param[in] dst_step_y dst_stride_y * number of elements along Y processed per workitem(in bytes)
55  * @param[in] dst_stride_z Stride of the source tensor in Z dimension (in bytes)
56  * @param[in] dst_step_z dst_stride_z * number of elements along Z processed per workitem(in bytes)
57  * @param[in] dst_offset_first_element_in_bytes The offset of the first element in the destination tensor
58  */
59 __kernel void reorg_layer_nchw(
62 {
64 
65  int xo = get_global_id(0);
66  int yo = get_global_id(1);
67  int zo = get_global_id(2);
68  int xi, yi, zi;
69 
70  CALCULATE_SRC_COORDINATES(xo, yo, zo, xi, yi, zi);
71 
72  int src_offset = xi * sizeof(DATA_TYPE) + yi * src_stride_y + zi * src_stride_z;
73  *((__global DATA_TYPE *)out.ptr) = *((__global DATA_TYPE *)(src_ptr + src_offset_first_element_in_bytes + src_offset));
74 }
75 #endif // // defined(DATA_TYPE) && defined(SRC_DEPTH) && defined(STRIDE)
Structure to hold 3D tensor information.
Definition: helpers.h:906
SimpleTensor< float > src
Definition: DFT.cpp:155
#define CONVERT_TO_TENSOR3D_STRUCT(name)
Definition: helpers.h:870
__global uchar * ptr
Pointer to the starting postion of the buffer.
Definition: helpers.h:908
#define TENSOR3D_DECLARATION(name)
Definition: helpers.h:813