Compute Library
 22.08
depth_to_space.cl
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24 #include "helpers.h"
25 
26 #if defined(DATA_TYPE) && defined(BLOCK_SHAPE) && defined(CHANNEL_SIZE)
27 /** Depth to space transformation. (NCHW)
28  *
29  * @note Datatype should be given as a preprocessor argument using -DDATA_TYPE=type. e.g. -DDATA_TYPE=float
30  * @note The input tensor depth size must be passed at compile time using -DCHANNEL_SIZE. e.g. -DCHANNEL_SIZE=2
31  * @note The block shape must be passed at compile time using -DBLOCK_SHAPE. e.g. -DBLOCK_SHAPE=2
32  *
33  * @param[in] input_ptr Pointer to the source tensor. Supported data types: All.
34  * @param[in] input_stride_x Stride of the source tensor in X dimension (in bytes)
35  * @param[in] input_step_x input_stride_x * number of elements along X processed per workitem(in bytes)
36  * @param[in] input_stride_y Stride of the source tensor in Y dimension (in bytes)
37  * @param[in] input_step_y input_stride_y * number of elements along Y processed per workitem(in bytes)
38  * @param[in] input_stride_z Stride of the source tensor in Z dimension (in bytes)
39  * @param[in] input_step_z input_stride_z * number of elements along Z processed per workitem(in bytes)
40  * @param[in] input_offset_first_element_in_bytes The offset of the first element in the first source tensor
41  * @param[in] batch_id The input tensor batch id
42  * @param[out] output_ptr Pointer to the destination tensor. Supported data types: same as @p input_ptr
43  * @param[in] output_stride_x Stride of the destination tensor in X dimension (in bytes)
44  * @param[in] output_step_x output_stride_x * number of elements along X processed per workitem(in bytes)
45  * @param[in] output_stride_y Stride of the destination tensor in Y dimension (in bytes)
46  * @param[in] output_step_y output_stride_y * number of elements along Y processed per workitem(in bytes)
47  * @param[in] output_stride_z Stride of the source tensor in Z dimension (in bytes)
48  * @param[in] output_step_z output_stride_z * number of elements along Z processed per workitem(in bytes)
49  * @param[in] output_offset_first_element_in_bytes The offset of the first element in the destination tensor
50  */
51 __kernel void depth_to_space_nchw(
53  const int batch_id,
54  TENSOR4D_DECLARATION(output))
55 {
58 
59  const int r = (CHANNEL_SIZE / (BLOCK_SHAPE * BLOCK_SHAPE));
60  const int x = get_global_id(0);
61  const int y = get_global_id(1);
62  const int z = get_global_id(2) % r;
63 
64  const int out_x = x * BLOCK_SHAPE + (get_global_id(2) / r) % BLOCK_SHAPE;
65  const int out_y = y * BLOCK_SHAPE + (get_global_id(2) / r) / BLOCK_SHAPE;
66 
67  *((__global DATA_TYPE *)tensor4D_offset(&out, out_x, out_y, z, batch_id)) = *((__global DATA_TYPE *)in.ptr);
68 }
69 #endif // defined(DATA_TYPE) && defined(BLOCK_SHAPE) && defined(CHANNEL_SIZE)
Structure to hold 3D tensor information.
Definition: helpers.h:906
Structure to hold 4D tensor information.
Definition: helpers.h:916
#define CONVERT_TO_TENSOR4D_STRUCT_NO_STEP(name, mod_size)
Definition: helpers.h:881
__global const uchar * tensor4D_offset(const Tensor4D *tensor, int x, int y, int z, int w)
Get the pointer position of a Tensor4D.
Definition: helpers.h:1109
#define CONVERT_TO_TENSOR3D_STRUCT(name)
Definition: helpers.h:870
#define TENSOR4D_DECLARATION(name)
Definition: helpers.h:823
__global uchar * ptr
Pointer to the starting postion of the buffer.
Definition: helpers.h:908
#define TENSOR3D_DECLARATION(name)
Definition: helpers.h:813