269 lines
11 KiB
C
269 lines
11 KiB
C
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/*
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* Copyright (c) 2012-2017 The Khronos Group Inc.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#ifndef _VX_KHR_OPENCL_H_
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#define _VX_KHR_OPENCL_H_
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#include <VX/vx.h>
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#include <VX/vx_compatibility.h>
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/*! \file
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* \brief The OpenVX to OpenCL Inter-op Extension Header.
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*
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* \defgroup group_cl_api API
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* \brief The API used by Clients to add OpenCL Kernels as <tt>vx_kernel</tt>.
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* \details
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*
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* \defgroup group_cl_def Extension Defines
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* \brief The Extension defines and constants.
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*
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* \defgroup group_cl_image Images
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* \brief OpenVX Images
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* \details Depending on whether the OpenCL implementation supports images, <tt>vx_image</tt>
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* may map to an <tt>image2d_t</tt> or a OpenCL buffer.
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*
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* \defgroup group_cl_array Arrays
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* \brief OpenVX Arrays
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*
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* \defgroup group_cl_convolution Convolutions
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* \brief OpenVX Convolutions
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*
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* \defgroup group_cl_distribution Distributions
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* \brief OpenVX Distributions
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*
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* \defgroup group_cl_matrix Matricies
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* \brief OpenVX Matrix
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*
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* \defgroup group_cl_types OpenVX to OpenCL Atomic Types
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* \brief Atomic Types
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* \details OpenVX types map to OpenCL types through this table:
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* | VX | OpenCL|
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* |:---------|:------|
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* |<tt>vx_uint8</tt> |<tt>uchar</tt> |
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* |<tt>vx_int8</tt> |<tt>char</tt> |
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* |<tt>vx_uint16</tt> |<tt>ushort</tt> |
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* |<tt>vx_int16</tt> |<tt>short</tt> |
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* |<tt>vx_uint32</tt> |<tt>uint</tt> |
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* |<tt>vx_int32</tt> |<tt>int</tt> |
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* |<tt>vx_uint64</tt> |<tt>ulong</tt> |
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* |<tt>vx_int64</tt> |<tt>long</tt> |
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* |<tt>vx_float32</tt>|<tt>float</tt> |
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* |<tt>vx_float64</tt>|<tt>double</tt> |
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* |<tt>vx_size</tt> |<tt>size_t</tt> |
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*
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* \note <tt>size_t</tt> can not be used as a parameter to a <tt>__kernel</tt>.
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*/
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#ifndef VX_SCALE_UNITY
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#define VX_SCALE_UNITY (1024)
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#endif
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/*!\brief The maximum number of planes an image may have which is compatible across both
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* API.
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* \ingroup group_cl_def
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*/
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#define VX_CL_MAX_PLANES (4)
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#if defined(VX_CL_DOCUMENTATION) || !defined(VX_CL_KERNEL)
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#if defined(__APPLE__) || defined(DARWIN)
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#include <OpenCL/OpenCL.h>
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#else
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#include <CL/cl.h>
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#endif
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#if (!defined(__APPLE__)) && defined(CL_USE_LUMINANCE)
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#define CL_USE_IMAGES
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#endif
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/*! \brief The string name of this extension to match for in the extensions list
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* \ingroup group_cl_def
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*/
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#define OPENVX_KHR_OPENCL "vx_khr_opencl"
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/*! \brief Adds an OpenCL Kernel as source code into the OpenVX implementation.
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* \param [in] context The OpenVX Context.
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* \param [in] name The name of the kernel in OpenVX nomenclature.
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* \param [in] enumeration The OpenVX kernel enumeration used to identify this kernel.
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* \param [in] source The array of source line pointers.
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* \param [in] line_lengths The array of lines lengths for each line of source.
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* \param [in] num_lines the number of lines in both the sources array and line_lengths array.
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* \param [in] symbol_name The name of the kernel to call in the program.
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* \param [in] numParams The number of parameters to the OpenVX kernel.
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* \param [in] input The input validator.
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* \param [in] output The output validator.
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* \see <tt>vxAddParameterToKernel</tt> to configure the specific parameter attributes.
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* \ingroup group_cl_api
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*/
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VX_API_ENTRY vx_kernel VX_API_CALL vxAddOpenCLAsSourceKernel(vx_context context,
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vx_char name[VX_MAX_KERNEL_NAME],
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vx_enum enumeration,
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char *source[],
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size_t line_lengths[],
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size_t num_lines,
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char symbol_name[],
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vx_uint32 numParams,
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vx_kernel_input_validate_f input,
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vx_kernel_output_validate_f output);
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/*! \brief Adds an OpenCL Kernel as binary program into the OpenVX implementation.
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* \param [in] context The OpenVX Context.
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* \param [in] name The name of the kernel in OpenVX nomenclature.
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* \param [in] enumeration The OpenVX kernel enumeration used to identify this kernel.
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* \param [in] program The OpenCL Program which contains the kernel (either pre-compiled or compiled by user).
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* \param [in] symbol_name The name of the kernel to call in the program.
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* \param [in] numParams The number of parameters to the OpenVX kernel.
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* \param [in] input The input validator.
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* \param [in] output The output validator.
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* \see <tt>vxAddParameterToKernel</tt> to configure the specific parameter attributes.
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* \ingroup group_cl_api
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*/
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VX_API_ENTRY vx_kernel VX_API_CALL vxAddOpenCLAsBinaryKernel(vx_context context,
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vx_char name[VX_MAX_KERNEL_NAME],
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vx_enum enumeration,
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cl_program program,
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char symbol_name[],
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vx_uint32 numParams,
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vx_kernel_input_validate_f input,
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vx_kernel_output_validate_f output);
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#endif // External API
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#if defined(VX_CL_DOCUMENTATION) || defined(VX_CL_KERNEL)
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#if defined(__IMAGE_SUPPORT__) && defined(CL_USE_LUMINANCE)
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#define CL_USE_IMAGES
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#endif
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/*! \brief Allows access to an image pixel as a typecast pointer deference.
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* \param type The OpenCL single element type
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* \param ptr The <tt>__global</tt> pointer to the base of the image.
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* \param x The x coordinate.
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* \param y The y coordinate.
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* \param sx The x stride.
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* \param sy The y stride.
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* \ingroup group_cl_image
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*/
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#define vxImagePixel(type, ptr, x, y, sx, sy) \
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(*(type *)(&((uchar *)ptr)[((y) * sy) + ((x) * sx)]))
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/*!
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* \brief Allows access to an array item as a typecast pointer deference.
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* \param type The OpenCL single element type or structure type.
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* \param ptr The <tt>__global</tt> pointer to the base of the array.
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* \param index The index of the element to access.
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* \param stride The stride in bytes between two adjacent elements.
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* \ingroup group_cl_array
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*/
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#define vxArrayItem(type, ptr, index, stride) \
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(*(type *)(&((uchar *)ptr)[index*stride]))
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/*! \brief Allows access to a matrix element \f$ M_{ij} \f$ where i is the column and j is the row.
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* \param type The OpenCL single element type of the matrix.
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* \param ptr The <tt>__global</tt> pointer to the base of the array.
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* \param columns The number of columns in the matrix.
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* \param i The column index
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* \param j The row index
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* \ingroup group_cl_matrix
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*/
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#define vxMatrixElement(type, ptr, columns, i, j) (((type *)ptr)[columns*j + i])
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/*! \brief Allows access to a convolution element \f$ C_{ij} \f$ where i is the column and j is the row.
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* \note Convolution elements are always of type <tt>short</tt>.
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* \param ptr The <tt>__global</tt> pointer to the base of the array.
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* \param columns The number of columns in the matrix.
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* \param i The column index
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* \param j The row index
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* \ingroup group_cl_convolution
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*/
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#define vxConvolveElement(ptr, columns, i, j) (((short *)ptr)[columns*j + i])
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/*! \brief Allows access to a distribution frequency counter.
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* \param ptr The <tt>__global</tt> pointer to the base of the distribution.
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* \param value The value to retrive the frequency count for.
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* \param offset The offset within the input domain.
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* \param range The total range within the domain starting from offset.
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* \param window_size The window size of the bin.
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* \ingroup group_cl_distribution
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*/
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#define vxGetFrequency(ptr, value, offset, range, window_size) \
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((offset <= value) && (value <= (range+offset)) ? ptr[(value-offset)/window_size] : 0)
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/*! \brief Increments a distribution frequency counter for a value.
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* \param ptr The <tt>__global</tt> pointer to the base of the distribution.
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* \param value The value to increment the frequency count for.
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* \param offset The offset within the input domain.
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* \param range The total range within the domain starting from offset.
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* \param window_size The window size of the bin.
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* \ingroup group_cl_distribution
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*/
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#define vxIncFrequency(ptr, value, offset, range, window_size) \
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((offset <= value) && (value <= (range+offset)) ? ++ptr[(value-offset)/window_size] : 0)
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/*! \brief Decrements a distribution frequency counter for a value.
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* \param ptr The <tt>__global</tt> pointer to the base of the distribution.
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* \param value The value to decrement the frequency count for.
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* \param offset The offset within the input domain.
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* \param range The total range within the domain starting from offset.
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* \param window_size The window size of the bin.
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* \ingroup group_cl_distribution
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*/
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#define vxDecFrequency(ptr, value, offset, range, window_size) \
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((offset <= value) && (value <= (range+offset)) ? --ptr[(value-offset)/window_size] : 0)
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#if defined(VX_VERSION_1_1) && (VX_VERSION >= VX_VERSION_1_1)
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/*! \brief Allows access to a distribution frequency counter.
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* \param ptr The <tt>__global</tt> pointer to the base of the distribution.
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* \param value The value to retrive the frequency count for.
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* \param offset The offset within the input domain.
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* \param range The total range within the domain starting from offset.
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* \param num_bins The number of bins in the domain range.
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* \ingroup group_cl_distribution
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*/
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#define vxGetFrequency2(ptr, value, offset, range, num_bins) \
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((offset <= value) && (value <= (range+offset)) ? ptr[(value-offset)*num_bins/range] : 0)
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/*! \brief Increments a distribution frequency counter for a value.
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* \param ptr The <tt>__global</tt> pointer to the base of the distribution.
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* \param value The value to increment the frequency count for.
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* \param offset The offset within the input domain.
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* \param range The total range within the domain starting from offset.
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* \param num_bins The number of bins in the domain range.
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* \ingroup group_cl_distribution
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*/
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#define vxIncFrequency2(ptr, value, offset, range, num_bins) \
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((offset <= value) && (value <= (range+offset)) ? ++ptr[(value-offset)*num_bins/range] : 0)
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/*! \brief Decrements a distribution frequency counter for a value.
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* \param ptr The <tt>__global</tt> pointer to the base of the distribution.
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* \param value The value to decrement the frequency count for.
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* \param offset The offset within the input domain.
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* \param range The total range within the domain starting from offset.
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* \param num_bins The number of bins in the domain range.
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* \ingroup group_cl_distribution
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*/
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#define vxDecFrequency2(ptr, value, offset, range, num_bins) \
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((offset <= value) && (value <= (range+offset)) ? --ptr[(value-offset)*num_bins/range] : 0)
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#endif /*VX_VERSION_1_1*/
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#endif
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#endif
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