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fft_execute.cpp

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  • Forked from einsteinathome / libclfft
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    fft_execute.cpp 15.21 KiB
    
    //
    // File:       fft_execute.cpp
    //
    // Version:    <1.0>
    //
    // Disclaimer: IMPORTANT:  This Apple software is supplied to you by Apple Inc. ("Apple")
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    //             terms, please do not use, install, modify or redistribute this Apple
    //             software.¬
    //
    //             In consideration of your agreement to abide by the following terms, and
    //             subject to these terms, Apple grants you a personal, non - exclusive
    //             license, under Apple's copyrights in this original Apple software ( the
    //             "Apple Software" ), to use, reproduce, modify and redistribute the Apple
    //             Software, with or without modifications, in source and / or binary forms;
    //             provided that if you redistribute the Apple Software in its entirety and
    //             without modifications, you must retain this notice and the following text
    //             and disclaimers in all such redistributions of the Apple Software. Neither
    //             the name, trademarks, service marks or logos of Apple Inc. may be used to
    //             endorse or promote products derived from the Apple Software without specific
    //             prior written permission from Apple.  Except as expressly stated in this
    //             notice, no other rights or licenses, express or implied, are granted by
    //             Apple herein, including but not limited to any patent rights that may be
    //             infringed by your derivative works or by other works in which the Apple
    //             Software may be incorporated.
    //
    //             The Apple Software is provided by Apple on an "AS IS" basis.  APPLE MAKES NO
    //             WARRANTIES, EXPRESS OR IMPLIED, INCLUDING WITHOUT LIMITATION THE IMPLIED
    //             WARRANTIES OF NON - INFRINGEMENT, MERCHANTABILITY AND FITNESS FOR A
    //             PARTICULAR PURPOSE, REGARDING THE APPLE SOFTWARE OR ITS USE AND OPERATION
    //             ALONE OR IN COMBINATION WITH YOUR PRODUCTS.
    //
    //             IN NO EVENT SHALL APPLE BE LIABLE FOR ANY SPECIAL, INDIRECT, INCIDENTAL OR
    //             CONSEQUENTIAL DAMAGES ( INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
    //             SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
    //             INTERRUPTION ) ARISING IN ANY WAY OUT OF THE USE, REPRODUCTION, MODIFICATION
    //             AND / OR DISTRIBUTION OF THE APPLE SOFTWARE, HOWEVER CAUSED AND WHETHER
    //             UNDER THEORY OF CONTRACT, TORT ( INCLUDING NEGLIGENCE ), STRICT LIABILITY OR
    //             OTHERWISE, EVEN IF APPLE HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
    //
    // Copyright ( C ) 2008 Apple Inc. All Rights Reserved.
    //
    ////////////////////////////////////////////////////////////////////////////////////////////////////
    
    
    #include "fft_internal.h"
    #include "clFFT.h"
    #include <stdlib.h>
    #include <stdio.h>
    #include <math.h>
    
    #define max(a,b) (((a)>(b)) ? (a) : (b))
    #define min(a,b) (((a)<(b)) ? (a) : (b))
    
    static cl_int
    allocateTemporaryBufferInterleaved(cl_fft_plan *plan, cl_uint batchSize)
    {
        cl_int err = CL_SUCCESS;
        if(plan->temp_buffer_needed && plan->last_batch_size != batchSize)
        {
            plan->last_batch_size = batchSize;
            size_t tmpLength = plan->n.x * plan->n.y * plan->n.z * batchSize * 2 * sizeof(cl_float);
    
            if(plan->tempmemobj)
                clReleaseMemObject(plan->tempmemobj);
    
            plan->tempmemobj = clCreateBuffer(plan->context, CL_MEM_READ_WRITE, tmpLength, NULL, &err);