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package com.mbien.opencl;
import java.nio.ByteBuffer;
import java.nio.ByteOrder;
import static com.mbien.opencl.CLException.*;
/**
*
* @author Michael Bien
*/
public class CLProgram {
private final CLContext context;
private final long programID;
private final CL cl;
public enum Status {
BUILD_SUCCESS(CL.CL_BUILD_SUCCESS),
BUILD_NONE(CL.CL_BUILD_NONE),
BUILD_IN_PROGRESS(CL.CL_BUILD_IN_PROGRESS),
BUILD_ERROR(CL.CL_BUILD_ERROR);
/**
* Value of wrapped OpenCL device type.
*/
public final int CL_BUILD_STATUS;
private Status(int CL_BUILD_STATUS) {
this.CL_BUILD_STATUS = CL_BUILD_STATUS;
}
public static Status valueOf(int clBuildStatus) {
switch(clBuildStatus) {
case(CL.CL_BUILD_SUCCESS):
return BUILD_SUCCESS;
case(CL.CL_BUILD_NONE):
return BUILD_NONE;
case(CL.CL_BUILD_IN_PROGRESS):
return BUILD_IN_PROGRESS;
case(CL.CL_BUILD_ERROR):
return BUILD_ERROR;
// is this a standard state?
// case (CL.CL_BUILD_PROGRAM_FAILURE):
// return BUILD_PROGRAM_FAILURE;
}
return null;
}
}
CLProgram(CLContext context, String src, long contextID) {
this.cl = context.cl;
this.context = context;
int[] intArray = new int[1];
// Create the program
programID = cl.clCreateProgramWithSource(contextID, 1, new String[] {src}, new long[]{src.length()}, 0, intArray, 0);
checkForError(intArray[0], "can not create program with source");
}
/**
* Builds this program for all devices accosiated with the context and implementation specific build options.
* @return this
*/
public CLProgram build() {
build(null, null);
return this;
}
/**
* Builds this program for the given devices and with the specified build options.
* @return this
* @param devices A list of devices this program should be build on or null for all devices of its context.
*/
public CLProgram build(CLDevice[] devices, String options) {
long[] deviceIDs = null;
if(devices != null) {
deviceIDs = new long[devices.length];
for (int i = 0; i < deviceIDs.length; i++) {
deviceIDs[i] = devices[i].deviceID;
}
}
// Build the program
int ret = cl.clBuildProgram(programID, deviceIDs, options, null, null);
checkForError(ret, "error building program");
return this;
}
/**
* Releases this program.
* @return this
*/
public CLProgram release() {
int ret = cl.clReleaseProgram(programID);
checkForError(ret, "can not release program");
context.programReleased(this);
return this;
}
/**
* Returns all devices associated with this program.
*/
public CLDevice[] getCLDevices() {
long[] longArray = new long[1];
int ret = cl.clGetProgramInfo(programID, CL.CL_PROGRAM_DEVICES, 0, null, longArray, 0);
checkForError(ret, "on clGetProgramInfo");
ByteBuffer bb = ByteBuffer.allocate((int) longArray[0]).order(ByteOrder.nativeOrder());
ret = cl.clGetProgramInfo(programID, CL.CL_PROGRAM_DEVICES, bb.capacity(), bb, null, 0);
checkForError(ret, "on clGetProgramInfo");
int count = bb.capacity() / 8; // TODO sizeof cl_device
CLDevice[] devices = new CLDevice[count];
for (int i = 0; i < count; i++) {
devices[i] = context.getCLDevices(bb.getLong());
}
return devices;
}
public String getBuildLog(CLDevice device) {
return getBuildInfoString(device.deviceID, CL.CL_PROGRAM_BUILD_LOG);
}
public Status getBuildStatus(CLDevice device) {
int clStatus = getBuildInfoInt(device.deviceID, CL.CL_PROGRAM_BUILD_STATUS);
return Status.valueOf(clStatus);
}
/**
* Returns the source code of this program. Note: sources are not cached, each call of this method calls into OpenCL.
*/
public String getSource() {
return getProgramInfoString(CL.CL_PROGRAM_SOURCE);
}
// TODO binaries, serialization, program build options
private final String getBuildInfoString(long device, int flag) {
long[] longArray = new long[1];
int ret = cl.clGetProgramBuildInfo(programID, device, flag, 0, null, longArray, 0);
checkForError(ret, "on clGetProgramBuildInfo");
ByteBuffer bb = ByteBuffer.allocate((int)longArray[0]).order(ByteOrder.nativeOrder());
ret = cl.clGetProgramBuildInfo(programID, device, flag, bb.capacity(), bb, null, 0);
checkForError(ret, "on clGetProgramBuildInfo");
return new String(bb.array(), 0, (int)longArray[0]);
}
private final String getProgramInfoString(int flag) {
long[] longArray = new long[1];
int ret = cl.clGetProgramInfo(programID, flag, 0, null, longArray, 0);
checkForError(ret, "on clGetProgramInfo");
ByteBuffer bb = ByteBuffer.allocate((int)longArray[0]).order(ByteOrder.nativeOrder());
ret = cl.clGetProgramInfo(programID, flag, bb.capacity(), bb, null, 0);
checkForError(ret, "on clGetProgramInfo");
return new String(bb.array(), 0, (int)longArray[0]);
}
// private int getProgramInfoInt(int flag) {
//
// ByteBuffer bb = ByteBuffer.allocate(4).order(ByteOrder.nativeOrder());
//
// int ret = cl.clGetProgramInfo(programID, flag, bb.capacity(), bb, null, 0);
// checkForError(ret, "");
//
// return bb.getInt();
// }
private int getBuildInfoInt(long device, int flag) {
ByteBuffer bb = ByteBuffer.allocate(4).order(ByteOrder.nativeOrder());
int ret = cl.clGetProgramBuildInfo(programID, device, flag, bb.capacity(), bb, null, 0);
checkForError(ret, "error on clGetProgramBuildInfo");
return bb.getInt();
}
}
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