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/*
* Copyright (C) 2014 Texas Instruments Incorporated - http://www.ti.com/
*
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the
* distribution.
*
* Neither the name of Texas Instruments Incorporated nor the names of
* its contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
*/
#define __CL_ENABLE_EXCEPTIONS
#include <CL/cl.hpp>
#include <iostream>
#include <fstream>
#include <cstdlib>
#include "ocl_util.h"
#include "conv.dsp_h"
//#define VERBOSE
using namespace cl;
using namespace std;
/*----------------------------------------------------------------------------------------------------------------------*/
static int oclconv_imgproc(char *kernelName, unsigned char *data_in, unsigned char *data_out, int width, int height, int sstride, int dstride)
{
cl_int err = CL_SUCCESS;
int bufsize = sstride * height * sizeof(unsigned char);
#ifdef VERBOSE
ofstream logfile;
logfile.open ("/home/root/oclconv_log.txt", ios::out | ios::app);
logfile << "Entered oclconv_test, width=" << width << " height=" << height << " dstride=" << dstride << " sstride=" << sstride << '\n';
logfile.close();
#endif
try
{
Context context(CL_DEVICE_TYPE_ACCELERATOR);
std::vector<Device> devices = context.getInfo<CL_CONTEXT_DEVICES>();
devices.resize(1); // resize to 1 since we are only running on 1 DSP
Buffer bufA (context, CL_MEM_READ_ONLY, bufsize);
Buffer bufDst (context, CL_MEM_WRITE_ONLY, bufsize);
Program::Binaries binary(1, make_pair(conv_dsp_bin,sizeof(conv_dsp_bin)));
Program program = Program(context, devices, binary);
program.build(devices);
Kernel kernel(program, kernelName);
kernel.setArg(0, bufA);
kernel.setArg(1, bufDst);
kernel.setArg(2, width);
kernel.setArg(3, height);
kernel.setArg(4, dstride);
kernel.setArg(5, sstride);
Event ev1,ev2,ev3,ev4;
CommandQueue Q(context, devices[0], CL_QUEUE_PROFILING_ENABLE);
Q.enqueueWriteBuffer(bufA, CL_FALSE, 0, bufsize, data_in, NULL, &ev1);
Q.enqueueTask (kernel, NULL, &ev3);
Q.enqueueReadBuffer (bufDst, CL_TRUE, 0, bufsize, data_out, NULL, &ev4);
}
catch (Error err)
{ cerr << "ERROR: " << err.what() << "(" << err.err() << ")" << endl; return -1; }
#ifdef VERBOSE
logfile.open ("/home/root/oclconv_log.txt", ios::out | ios::app);
logfile << "Success!" << endl;
logfile.close();
#endif
return 0;
}
/******************************************************************************
* Canny Edge Detection - called on ARM, but algorithm dispatched to 1 DSP
*
* Note: Assumes arguments are invariant from call 1 to call N. If this is
* not the case, then move buffer creation back to the every frame section
* rather than being cached in frame 0.
*
* Note: Also assumes total size is not overly large as it allocates temp
* buffers in MSMC
*****************************************************************************/
static int ocl_canny(unsigned char *data_in, unsigned char *data_out, unsigned short height, unsigned short width)
{
int numelem = (int)height*(int)width;
static bool canny_first_call = true;
CommandQueue *canny_Q;
Buffer *canny_gradX, *canny_gradY, *canny_mag, *canny_scratch, *canny_numItems;
Kernel *canny_K;
Buffer *canny_input, *canny_output;
try
{
Context canny_ctx(CL_DEVICE_TYPE_ACCELERATOR);
Event canny_ev, canny_ev1, canny_ev2;
/*---------------------------------------------------------------------
* Cache as much OpenCL plumbing on the first call, so the cost is not
* repeatedfor every frame.
*--------------------------------------------------------------------*/
if (canny_first_call)
{
canny_first_call = false;
std::vector<Device> devices = canny_ctx.getInfo<CL_CONTEXT_DEVICES>();
devices.resize(1); // resize to 1 since we are only running on 1 DSP
canny_Q = new CommandQueue(canny_ctx, devices[0]);
canny_input = new Buffer(canny_ctx, CL_MEM_READ_ONLY, numelem);
canny_output = new Buffer(canny_ctx, CL_MEM_WRITE_ONLY, numelem);
canny_gradX = new Buffer(canny_ctx, CL_MEM_WRITE_ONLY, numelem*sizeof(short));
canny_gradY = new Buffer(canny_ctx, CL_MEM_WRITE_ONLY, numelem*sizeof(short));
canny_mag = new Buffer(canny_ctx, CL_MEM_WRITE_ONLY, numelem*sizeof(short));
canny_scratch = new Buffer(canny_ctx, CL_MEM_WRITE_ONLY, numelem);
canny_numItems= new Buffer(canny_ctx, CL_MEM_WRITE_ONLY, sizeof(int));
/*---------------------------------------------------------------------
* Compile the Kernel Source for the devices
*--------------------------------------------------------------------*/
Program::Binaries binary(1, make_pair(conv_dsp_bin, sizeof(conv_dsp_bin)));
Program program(canny_ctx, devices, binary);
program.build(devices);
canny_K = new Kernel(program, "canny_tiocl");
canny_K->setArg(0, *canny_input);
canny_K->setArg(1, *canny_gradX);
canny_K->setArg(2, *canny_gradY);
canny_K->setArg(3, *canny_mag);
canny_K->setArg(4, *canny_output);
canny_K->setArg(5, *canny_scratch);
canny_K->setArg(6, *canny_numItems);
canny_K->setArg(7, width);
canny_K->setArg(8, height);
}
canny_Q->enqueueWriteBuffer(*canny_input, CL_FALSE, 0, numelem, data_in, NULL, &canny_ev1);
canny_Q->enqueueTask(*canny_K, 0, &canny_ev);
canny_Q->enqueueReadBuffer (*canny_output, CL_TRUE, 0, numelem, data_out, NULL, &canny_ev2);
}
catch (cl::Error err)
{
cerr << "ERROR: " << err.what() << "(" << err.err() << ")" << endl;
return (-1);
}
return 0;
}
/*----------------------------------------------------------------------------------------------------------------------*/
#ifdef __cplusplus
extern "C" {
#endif
int oclconv_kernel(int kernel_type, int filter_size, char *arbkernel,
unsigned char *data_in, unsigned char *data_out,
int width, int height, int dstride, int sstride)
{
int retval = -1;
switch(kernel_type)
{
case 0: /* Median */
if(filter_size == 5) {
retval = oclconv_imgproc("Median2x2", data_in, data_out, width, height, sstride, dstride);
} else if(filter_size == 9) {
retval = oclconv_imgproc("Median3x3", data_in, data_out, width, height, sstride, dstride);
}
break;
case 1: /* Sobel */
if(filter_size == 9) {
retval = oclconv_imgproc("Sobel3x3", data_in, data_out, width, height, sstride, dstride);
}
break;
case 2: /* conv */
if(filter_size == 25) {
retval = oclconv_imgproc("Conv5x5", data_in, data_out, width, height, sstride, dstride);
return 0;
}
break;
case 3: /* vlib canny */
/* filter size is ignored */
retval = ocl_canny (data_in, data_out, width, height); /* input and output stride assumed to be == width */
break;
case 4: /* user defined kernel */
retval = oclconv_imgproc (arbkernel, data_in, data_out, width, height, sstride, dstride);
break;
default:
break;
}
return retval;
}
#ifdef __cplusplus
}
#endif
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