mirror of https://github.com/gnss-sdr/gnss-sdr
406 lines
14 KiB
C++
406 lines
14 KiB
C++
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//
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// File: fft_execute.cpp
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//
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// Version: <1.0>
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//
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// Disclaimer: IMPORTANT: This Apple software is supplied to you by Apple Inc. ("Apple")
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// in consideration of your agreement to the following terms, and your use,
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// installation, modification or redistribution of this Apple software
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// constitutes acceptance of these terms. If you do not agree with these
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// terms, please do not use, install, modify or redistribute this Apple
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// software.¬
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//
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// In consideration of your agreement to abide by the following terms, and
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// subject to these terms, Apple grants you a personal, non - exclusive
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// license, under Apple's copyrights in this original Apple software ( the
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// "Apple Software" ), to use, reproduce, modify and redistribute the Apple
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// Software, with or without modifications, in source and / or binary forms;
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// provided that if you redistribute the Apple Software in its entirety and
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// without modifications, you must retain this notice and the following text
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// and disclaimers in all such redistributions of the Apple Software. Neither
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// the name, trademarks, service marks or logos of Apple Inc. may be used to
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// endorse or promote products derived from the Apple Software without specific
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// prior written permission from Apple. Except as expressly stated in this
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// notice, no other rights or licenses, express or implied, are granted by
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// Apple herein, including but not limited to any patent rights that may be
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// infringed by your derivative works or by other works in which the Apple
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// Software may be incorporated.
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//
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// The Apple Software is provided by Apple on an "AS IS" basis. APPLE MAKES NO
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// WARRANTIES, EXPRESS OR IMPLIED, INCLUDING WITHOUT LIMITATION THE IMPLIED
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// WARRANTIES OF NON - INFRINGEMENT, MERCHANTABILITY AND FITNESS FOR A
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// PARTICULAR PURPOSE, REGARDING THE APPLE SOFTWARE OR ITS USE AND OPERATION
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// ALONE OR IN COMBINATION WITH YOUR PRODUCTS.
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//
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// IN NO EVENT SHALL APPLE BE LIABLE FOR ANY SPECIAL, INDIRECT, INCIDENTAL OR
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// CONSEQUENTIAL DAMAGES ( INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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// SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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// INTERRUPTION ) ARISING IN ANY WAY OUT OF THE USE, REPRODUCTION, MODIFICATION
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// AND / OR DISTRIBUTION OF THE APPLE SOFTWARE, HOWEVER CAUSED AND WHETHER
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// UNDER THEORY OF CONTRACT, TORT ( INCLUDING NEGLIGENCE ), STRICT LIABILITY OR
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// OTHERWISE, EVEN IF APPLE HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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//
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// Copyright ( C ) 2008 Apple Inc. All Rights Reserved.
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//
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////////////////////////////////////////////////////////////////////////////////////////////////////
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#include "fft_internal.h"
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#include "clFFT.h"
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#include <stdlib.h>
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#include <stdio.h>
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#include <math.h>
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#define max(a,b) (((a)>(b)) ? (a) : (b))
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#define min(a,b) (((a)<(b)) ? (a) : (b))
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static cl_int
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allocateTemporaryBufferInterleaved(cl_fft_plan *plan, cl_uint batchSize)
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{
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cl_int err = CL_SUCCESS;
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if(plan->temp_buffer_needed && plan->last_batch_size != batchSize)
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{
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plan->last_batch_size = batchSize;
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size_t tmpLength = plan->n.x * plan->n.y * plan->n.z * batchSize * 2 * sizeof(cl_float);
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if(plan->tempmemobj)
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clReleaseMemObject(plan->tempmemobj);
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plan->tempmemobj = clCreateBuffer(plan->context, CL_MEM_READ_WRITE, tmpLength, NULL, &err);
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}
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return err;
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}
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static cl_int
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allocateTemporaryBufferPlannar(cl_fft_plan *plan, cl_uint batchSize)
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{
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cl_int err = CL_SUCCESS;
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cl_int terr;
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if(plan->temp_buffer_needed && plan->last_batch_size != batchSize)
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{
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plan->last_batch_size = batchSize;
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size_t tmpLength = plan->n.x * plan->n.y * plan->n.z * batchSize * sizeof(cl_float);
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if(plan->tempmemobj_real)
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clReleaseMemObject(plan->tempmemobj_real);
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if(plan->tempmemobj_imag)
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clReleaseMemObject(plan->tempmemobj_imag);
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plan->tempmemobj_real = clCreateBuffer(plan->context, CL_MEM_READ_WRITE, tmpLength, NULL, &err);
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plan->tempmemobj_imag = clCreateBuffer(plan->context, CL_MEM_READ_WRITE, tmpLength, NULL, &terr);
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err |= terr;
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}
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return err;
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}
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void
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getKernelWorkDimensions(cl_fft_plan *plan, cl_fft_kernel_info *kernelInfo, cl_int *batchSize, size_t *gWorkItems, size_t *lWorkItems)
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{
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*lWorkItems = kernelInfo->num_workitems_per_workgroup;
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int numWorkGroups = kernelInfo->num_workgroups;
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int numXFormsPerWG = kernelInfo->num_xforms_per_workgroup;
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switch(kernelInfo->dir)
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{
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case cl_fft_kernel_x:
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*batchSize *= (plan->n.y * plan->n.z);
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numWorkGroups = (*batchSize % numXFormsPerWG) ? (*batchSize/numXFormsPerWG + 1) : (*batchSize/numXFormsPerWG);
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numWorkGroups *= kernelInfo->num_workgroups;
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break;
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case cl_fft_kernel_y:
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*batchSize *= plan->n.z;
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numWorkGroups *= *batchSize;
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break;
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case cl_fft_kernel_z:
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numWorkGroups *= *batchSize;
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break;
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}
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*gWorkItems = numWorkGroups * *lWorkItems;
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}
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cl_int
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clFFT_ExecuteInterleaved( cl_command_queue queue, clFFT_Plan Plan, cl_int batchSize, clFFT_Direction dir,
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cl_mem data_in, cl_mem data_out,
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cl_int num_events, cl_event *event_list, cl_event *event )
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{
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int s;
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cl_fft_plan *plan = (cl_fft_plan *) Plan;
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if(plan->format != clFFT_InterleavedComplexFormat)
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return CL_INVALID_VALUE;
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cl_int err;
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size_t gWorkItems, lWorkItems;
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int inPlaceDone;
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cl_int isInPlace = data_in == data_out ? 1 : 0;
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if((err = allocateTemporaryBufferInterleaved(plan, batchSize)) != CL_SUCCESS)
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return err;
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cl_mem memObj[3];
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memObj[0] = data_in;
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memObj[1] = data_out;
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memObj[2] = plan->tempmemobj;
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cl_fft_kernel_info *kernelInfo = plan->kernel_info;
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int numKernels = plan->num_kernels;
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int numKernelsOdd = numKernels & 1;
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int currRead = 0;
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int currWrite = 1;
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// at least one external dram shuffle (transpose) required
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if(plan->temp_buffer_needed)
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{
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// in-place transform
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if(isInPlace)
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{
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inPlaceDone = 0;
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currRead = 1;
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currWrite = 2;
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}
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else
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{
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currWrite = (numKernels & 1) ? 1 : 2;
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}
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while(kernelInfo)
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{
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if( isInPlace && numKernelsOdd && !inPlaceDone && kernelInfo->in_place_possible)
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{
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currWrite = currRead;
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inPlaceDone = 1;
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}
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s = batchSize;
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getKernelWorkDimensions(plan, kernelInfo, &s, &gWorkItems, &lWorkItems);
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err |= clSetKernelArg(kernelInfo->kernel, 0, sizeof(cl_mem), &memObj[currRead]);
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err |= clSetKernelArg(kernelInfo->kernel, 1, sizeof(cl_mem), &memObj[currWrite]);
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err |= clSetKernelArg(kernelInfo->kernel, 2, sizeof(cl_int), &dir);
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err |= clSetKernelArg(kernelInfo->kernel, 3, sizeof(cl_int), &s);
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err |= clEnqueueNDRangeKernel(queue, kernelInfo->kernel, 1, NULL, &gWorkItems, &lWorkItems, 0, NULL, NULL);
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if(err)
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return err;
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currRead = (currWrite == 1) ? 1 : 2;
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currWrite = (currWrite == 1) ? 2 : 1;
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kernelInfo = kernelInfo->next;
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}
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}
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// no dram shuffle (transpose required) transform
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// all kernels can execute in-place.
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else {
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while(kernelInfo)
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{
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s = batchSize;
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getKernelWorkDimensions(plan, kernelInfo, &s, &gWorkItems, &lWorkItems);
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err |= clSetKernelArg(kernelInfo->kernel, 0, sizeof(cl_mem), &memObj[currRead]);
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err |= clSetKernelArg(kernelInfo->kernel, 1, sizeof(cl_mem), &memObj[currWrite]);
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err |= clSetKernelArg(kernelInfo->kernel, 2, sizeof(cl_int), &dir);
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err |= clSetKernelArg(kernelInfo->kernel, 3, sizeof(cl_int), &s);
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err |= clEnqueueNDRangeKernel(queue, kernelInfo->kernel, 1, NULL, &gWorkItems, &lWorkItems, 0, NULL, NULL);
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if(err)
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return err;
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currRead = 1;
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currWrite = 1;
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kernelInfo = kernelInfo->next;
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}
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}
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return err;
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}
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cl_int
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clFFT_ExecutePlannar( cl_command_queue queue, clFFT_Plan Plan, cl_int batchSize, clFFT_Direction dir,
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cl_mem data_in_real, cl_mem data_in_imag, cl_mem data_out_real, cl_mem data_out_imag,
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cl_int num_events, cl_event *event_list, cl_event *event)
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{
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int s;
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cl_fft_plan *plan = (cl_fft_plan *) Plan;
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if(plan->format != clFFT_SplitComplexFormat)
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return CL_INVALID_VALUE;
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cl_int err;
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size_t gWorkItems, lWorkItems;
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int inPlaceDone;
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cl_int isInPlace = ((data_in_real == data_out_real) && (data_in_imag == data_out_imag)) ? 1 : 0;
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if((err = allocateTemporaryBufferPlannar(plan, batchSize)) != CL_SUCCESS)
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return err;
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cl_mem memObj_real[3];
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cl_mem memObj_imag[3];
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memObj_real[0] = data_in_real;
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memObj_real[1] = data_out_real;
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memObj_real[2] = plan->tempmemobj_real;
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memObj_imag[0] = data_in_imag;
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memObj_imag[1] = data_out_imag;
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memObj_imag[2] = plan->tempmemobj_imag;
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cl_fft_kernel_info *kernelInfo = plan->kernel_info;
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int numKernels = plan->num_kernels;
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int numKernelsOdd = numKernels & 1;
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int currRead = 0;
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int currWrite = 1;
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// at least one external dram shuffle (transpose) required
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if(plan->temp_buffer_needed)
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{
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// in-place transform
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if(isInPlace)
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{
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inPlaceDone = 0;
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currRead = 1;
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currWrite = 2;
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}
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else
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{
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currWrite = (numKernels & 1) ? 1 : 2;
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}
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while(kernelInfo)
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{
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if( isInPlace && numKernelsOdd && !inPlaceDone && kernelInfo->in_place_possible)
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{
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currWrite = currRead;
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inPlaceDone = 1;
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}
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s = batchSize;
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getKernelWorkDimensions(plan, kernelInfo, &s, &gWorkItems, &lWorkItems);
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err |= clSetKernelArg(kernelInfo->kernel, 0, sizeof(cl_mem), &memObj_real[currRead]);
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err |= clSetKernelArg(kernelInfo->kernel, 1, sizeof(cl_mem), &memObj_imag[currRead]);
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err |= clSetKernelArg(kernelInfo->kernel, 2, sizeof(cl_mem), &memObj_real[currWrite]);
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err |= clSetKernelArg(kernelInfo->kernel, 3, sizeof(cl_mem), &memObj_imag[currWrite]);
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err |= clSetKernelArg(kernelInfo->kernel, 4, sizeof(cl_int), &dir);
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err |= clSetKernelArg(kernelInfo->kernel, 5, sizeof(cl_int), &s);
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err |= clEnqueueNDRangeKernel(queue, kernelInfo->kernel, 1, NULL, &gWorkItems, &lWorkItems, 0, NULL, NULL);
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if(err)
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return err;
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currRead = (currWrite == 1) ? 1 : 2;
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currWrite = (currWrite == 1) ? 2 : 1;
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kernelInfo = kernelInfo->next;
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}
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}
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// no dram shuffle (transpose required) transform
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else {
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while(kernelInfo)
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{
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s = batchSize;
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getKernelWorkDimensions(plan, kernelInfo, &s, &gWorkItems, &lWorkItems);
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err |= clSetKernelArg(kernelInfo->kernel, 0, sizeof(cl_mem), &memObj_real[currRead]);
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err |= clSetKernelArg(kernelInfo->kernel, 1, sizeof(cl_mem), &memObj_imag[currRead]);
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err |= clSetKernelArg(kernelInfo->kernel, 2, sizeof(cl_mem), &memObj_real[currWrite]);
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err |= clSetKernelArg(kernelInfo->kernel, 3, sizeof(cl_mem), &memObj_imag[currWrite]);
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err |= clSetKernelArg(kernelInfo->kernel, 4, sizeof(cl_int), &dir);
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err |= clSetKernelArg(kernelInfo->kernel, 5, sizeof(cl_int), &s);
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err |= clEnqueueNDRangeKernel(queue, kernelInfo->kernel, 1, NULL, &gWorkItems, &lWorkItems, 0, NULL, NULL);
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if(err)
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return err;
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currRead = 1;
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currWrite = 1;
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kernelInfo = kernelInfo->next;
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}
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}
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return err;
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}
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cl_int
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clFFT_1DTwistInterleaved(clFFT_Plan Plan, cl_command_queue queue, cl_mem array,
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unsigned numRows, unsigned numCols, unsigned startRow, unsigned rowsToProcess, clFFT_Direction dir)
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{
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cl_fft_plan *plan = (cl_fft_plan *) Plan;
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unsigned int N = numRows*numCols;
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unsigned int nCols = numCols;
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unsigned int sRow = startRow;
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unsigned int rToProcess = rowsToProcess;
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int d = dir;
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int err = 0;
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cl_device_id device_id;
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err = clGetCommandQueueInfo(queue, CL_QUEUE_DEVICE, sizeof(cl_device_id), &device_id, NULL);
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if(err)
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return err;
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size_t gSize;
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err = clGetKernelWorkGroupInfo(plan->twist_kernel, device_id, CL_KERNEL_WORK_GROUP_SIZE, sizeof(size_t), &gSize, NULL);
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if(err)
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return err;
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gSize = min(128, gSize);
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size_t numGlobalThreads[1] = { max(numCols / gSize, 1)*gSize };
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size_t numLocalThreads[1] = { gSize };
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err |= clSetKernelArg(plan->twist_kernel, 0, sizeof(cl_mem), &array);
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err |= clSetKernelArg(plan->twist_kernel, 1, sizeof(unsigned int), &sRow);
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err |= clSetKernelArg(plan->twist_kernel, 2, sizeof(unsigned int), &nCols);
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err |= clSetKernelArg(plan->twist_kernel, 3, sizeof(unsigned int), &N);
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err |= clSetKernelArg(plan->twist_kernel, 4, sizeof(unsigned int), &rToProcess);
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err |= clSetKernelArg(plan->twist_kernel, 5, sizeof(int), &d);
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err |= clEnqueueNDRangeKernel(queue, plan->twist_kernel, 1, NULL, numGlobalThreads, numLocalThreads, 0, NULL, NULL);
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return err;
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}
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cl_int
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clFFT_1DTwistPlannar(clFFT_Plan Plan, cl_command_queue queue, cl_mem array_real, cl_mem array_imag,
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unsigned numRows, unsigned numCols, unsigned startRow, unsigned rowsToProcess, clFFT_Direction dir)
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{
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cl_fft_plan *plan = (cl_fft_plan *) Plan;
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unsigned int N = numRows*numCols;
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unsigned int nCols = numCols;
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unsigned int sRow = startRow;
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unsigned int rToProcess = rowsToProcess;
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int d = dir;
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int err = 0;
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cl_device_id device_id;
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err = clGetCommandQueueInfo(queue, CL_QUEUE_DEVICE, sizeof(cl_device_id), &device_id, NULL);
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if(err)
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return err;
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size_t gSize;
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err = clGetKernelWorkGroupInfo(plan->twist_kernel, device_id, CL_KERNEL_WORK_GROUP_SIZE, sizeof(size_t), &gSize, NULL);
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if(err)
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return err;
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gSize = min(128, gSize);
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size_t numGlobalThreads[1] = { max(numCols / gSize, 1)*gSize };
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size_t numLocalThreads[1] = { gSize };
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err |= clSetKernelArg(plan->twist_kernel, 0, sizeof(cl_mem), &array_real);
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err |= clSetKernelArg(plan->twist_kernel, 1, sizeof(cl_mem), &array_imag);
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err |= clSetKernelArg(plan->twist_kernel, 2, sizeof(unsigned int), &sRow);
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err |= clSetKernelArg(plan->twist_kernel, 3, sizeof(unsigned int), &nCols);
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err |= clSetKernelArg(plan->twist_kernel, 4, sizeof(unsigned int), &N);
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err |= clSetKernelArg(plan->twist_kernel, 5, sizeof(unsigned int), &rToProcess);
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err |= clSetKernelArg(plan->twist_kernel, 6, sizeof(int), &d);
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err |= clEnqueueNDRangeKernel(queue, plan->twist_kernel, 1, NULL, numGlobalThreads, numLocalThreads, 0, NULL, NULL);
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return err;
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}
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