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Java™ Binding for the OpenCL® API (Android runtime)
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/*
* Copyright (c) 2009 JogAmp Community. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without modification, are
* permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright notice, this list of
* conditions and the following disclaimer.
*
* 2. 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.
*
* THIS SOFTWARE IS PROVIDED BY JogAmp Community ``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 JogAmp Community 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.
*
* The views and conclusions contained in the software and documentation are those of the
* authors and should not be interpreted as representing official policies, either expressed
* or implied, of JogAmp Community.
*/
package com.jogamp.opencl;
import com.jogamp.opencl.llb.CLMemObjBinding;
import com.jogamp.common.nio.Buffers;
import com.jogamp.common.nio.PointerBuffer;
import com.jogamp.opencl.llb.CL;
import com.jogamp.opencl.llb.impl.CLMemObjectDestructorCallback;
import java.nio.Buffer;
import java.nio.IntBuffer;
import java.util.ArrayList;
import java.util.EnumSet;
import java.util.List;
import static com.jogamp.opencl.CLException.*;
import static com.jogamp.opencl.llb.gl.CLGL.*;
/**
* Common superclass for all OpenCL memory types.
* Represents an OpenCL memory object and wraps an optional NIO buffer.
* @author Michael Bien, et al.
*/
public abstract class CLMemory extends CLObjectResource {
B buffer;
protected final int FLAGS;
protected long size;
// depends on the nio buffer type
protected int elementSize;
protected int clCapacity;
private final CLMemObjBinding binding;
protected CLMemory(final CLContext context, final long size, final long id, final int flags) {
this(context, null, size, id, flags);
}
protected CLMemory(final CLContext context, final B directBuffer, final long size, final long id, final int flags) {
super(context, id);
this.buffer = directBuffer;
this.FLAGS = flags;
this.size = size;
this.binding = context.getPlatform().getMemObjectBinding();
initElementSize();
initCLCapacity();
}
private void initElementSize() {
this.elementSize = (buffer==null) ? 1 : Buffers.sizeOfBufferElem(buffer);
}
protected final void initCLCapacity() {
this.clCapacity = (int) (size / elementSize);
}
/**
* Returns true if a host pointer must be specified on mem object creation.
*/
protected static boolean isHostPointerFlag(final int flags) {
return (flags & CL_MEM_COPY_HOST_PTR) != 0
|| (flags & CL_MEM_USE_HOST_PTR) != 0;
}
protected static long getSizeImpl(final CLContext context, final long id) {
final PointerBuffer pb = PointerBuffer.allocateDirect(1);
final CLMemObjBinding binding = context.getPlatform().getMemObjectBinding(); // FIXME: CL separation makes this pretty complicated !
final int ret = binding.clGetMemObjectInfo(id, CL_MEM_SIZE, pb.elementSize(), pb.getBuffer(), null);
checkForError(ret, "can not obtain buffer info");
return pb.get();
}
protected static CL getCL(final CLContext context) {
return context.getCL();
}
/**
* Registers a callback which will be called by the OpenCL implementation
* when the memory object is released.
*/
public void registerDestructorCallback(final CLMemObjectListener listener) {
binding.clSetMemObjectDestructorCallback(ID, new CLMemObjectDestructorCallback() {
@Override
public void memoryDeallocated(final long memObjID) {
listener.memoryDeallocated(CLMemory.this);
}
});
}
/**
* Returns a new instance of CLMemory pointing to the same CLResource but using a different Buffer.
*/
public abstract CLMemory cloneWith(T directBuffer);
public CLMemory use(final B buffer) {
if(this.buffer != null && buffer != null && this.buffer.getClass() != buffer.getClass()) {
throw new IllegalArgumentException(
"expected a Buffer of class " + this.buffer.getClass()
+" but got " + buffer.getClass());
}
this.buffer = buffer;
initElementSize();
initCLCapacity();
return this;
}
/**
* Returns the optional NIO buffer for this memory object.
*/
public B getBuffer() {
return buffer;
}
/**
* Returns the capacity of the wrapped direct buffer or 0 if no buffer available.
*/
public int getNIOCapacity() {
if(buffer == null) {
return 0;
}
return buffer.capacity();
}
/**
* Returns the size of the wrapped direct buffer in byte or 0 if no buffer available.
*/
public int getNIOSize() {
if(buffer == null) {
return 0;
}
return getElementSize() * buffer.capacity();
}
/**
* Returns the size of the allocated OpenCL memory in bytes.
*/
public long getCLSize() {
return size;
}
/**
* Returns the size in buffer elements of this memory object.
*/
public int getCLCapacity() {
return clCapacity;
}
/**
* Returns the size in bytes of a single buffer element.
* This method returns 1 if no buffer is available indicating regular byte access.
*/
public int getElementSize() {
return elementSize;
}
/**
* Returns the configuration of this memory object.
*/
public EnumSet getConfig() {
return Mem.valuesOf(FLAGS);
}
/**
* Returns the number of buffer mappings. The map count returned should be considered immediately stale.
* It is unsuitable for general use in applications. This feature is provided for debugging.
*/
public int getMapCount() {
final IntBuffer value = Buffers.newDirectIntBuffer(1);
final int ret = binding.clGetMemObjectInfo(ID, CL_MEM_MAP_COUNT, 4, value, null);
checkForError(ret, "can not obtain buffer map count.");
return value.get();
}
/**
* Returns true if this memory object was created with the {@link Mem#READ_ONLY} flag.
*/
public boolean isReadOnly() {
return (Mem.READ_ONLY.CONFIG & FLAGS) != 0;
}
/**
* Returns true if this memory object was created with the {@link Mem#WRITE_ONLY} flag.
*/
public boolean isWriteOnly() {
return (Mem.WRITE_ONLY.CONFIG & FLAGS) != 0;
}
/**
* Returns true if this memory object was created with the {@link Mem#READ_WRITE} flag.
*/
public boolean isReadWrite() {
return (Mem.READ_WRITE.CONFIG & FLAGS) != 0;
}
@Override
public void release() {
super.release();
final int ret = binding.clReleaseMemObject(ID);
context.onMemoryReleased(this);
if(ret != CL_SUCCESS) {
throw newException(ret, "can not release "+this);
}
}
// TODO kept only temporary for debugging purposes
/**
* Returns the OpenGL buffer type of this shared buffer.
*/
// @Deprecated
// /*public*/ final GLObjectType _getGLObjectType() {
// int[] array = new int[1];
// int ret = ((CLGL)cl).clGetGLObjectInfo(ID, array, 0, null, 0);
// CLException.checkForError(ret, "error while asking for gl object info");
// return GLObjectType.valueOf(array[0]);
// }
//
// /**
// * Returns the OpenGL object id of this shared buffer.
// */
// @Deprecated
// /*public*/ final int _getGLObjectID() {
// int[] array = new int[1];
// int ret = ((CLGL)cl).clGetGLObjectInfo(ID, null, 0, array, 0);
// CLException.checkForError(ret, "error while asking for gl object info");
// return array[0];
// }
@Override
public boolean equals(final Object obj) {
if (obj == null) {
return false;
}
if (getClass() != obj.getClass()) {
return false;
}
final CLMemory other = (CLMemory) obj;
if (this.ID != other.ID) {
return false;
}
if (this.context != other.context && (this.context == null || !this.context.equals(other.context))) {
return false;
}
return true;
}
@Override
public int hashCode() {
int hash = 7;
hash = 83 * hash + (int) (this.ID ^ (this.ID >>> 32));
hash = 83 * hash + (this.context != null ? this.context.hashCode() : 0);
return hash;
}
@Override
public String toString() {
return getClass().getSimpleName()+" [id: " + ID+" buffer: "+buffer+"]";
}
/**
* Memory settings for configuring CLMemory.
*/
public enum Mem {
/**
* Enum representing CL_MEM_READ_WRITE.
* This flag specifies that the memory object will be read and
* written by a kernel.
*/
READ_WRITE(CL_MEM_READ_WRITE),
/**
* Enum representing CL_MEM_WRITE_ONLY.
* This flags specifies that the memory object will be written
* but not read by a kernel.
* Reading from a buffer or image object created with WRITE_ONLY
* inside a kernel is undefined.
*/
WRITE_ONLY(CL_MEM_WRITE_ONLY),
/**
* Enum representing CL_MEM_READ_ONLY.
* This flag specifies that the memory object is a read-only memory
* object when used inside a kernel. Writing to a buffer or image object
* created withREAD_ONLY inside a kernel is undefined.
*/
READ_ONLY(CL_MEM_READ_ONLY),
/**
* Enum representing CL_MEM_USE_HOST_PTR.
* If specified, it indicates that the application wants the OpenCL
* implementation to use memory referenced by host_ptr as the storage
* bits for the memory object. OpenCL implementations are allowed
* to cache the buffer contents pointed to by host_ptr in device memory.
* This cached copy can be used when kernels are executed on a device.
*/
USE_BUFFER(CL_MEM_USE_HOST_PTR),
/**
* Enum representing CL_MEM_ALLOC_HOST_PTR.
* This flag specifies that the application wants the OpenCL implementation
* to allocate memory from host accessible memory.
* {@link #ALLOCATE_BUFFER} and {@link #USE_BUFFER} are mutually exclusive.
*/
ALLOCATE_BUFFER(CL_MEM_ALLOC_HOST_PTR),
/**
* Enum representing CL_MEM_COPY_HOST_PTR.
* If {@link #COPY_BUFFER} specified, it indicates that the application
* wants the OpenCL implementation to allocate memory for the memory object
* and copy the data from memory referenced by host_ptr.
* {@link #COPY_BUFFER} and {@link #USE_BUFFER} are mutually exclusive.
*/
COPY_BUFFER(CL_MEM_COPY_HOST_PTR);
/**
* Value of wrapped OpenCL flag.
*/
public final int CONFIG;
private Mem(final int config) {
this.CONFIG = config;
}
public static Mem valueOf(final int bufferFlag) {
switch (bufferFlag) {
case CL_MEM_READ_WRITE:
return Mem.READ_WRITE;
case CL_MEM_READ_ONLY:
return Mem.READ_ONLY;
case CL_MEM_WRITE_ONLY:
return Mem.WRITE_ONLY;
case CL_MEM_USE_HOST_PTR:
return Mem.USE_BUFFER;
case(CL_MEM_ALLOC_HOST_PTR):
return ALLOCATE_BUFFER;
case CL_MEM_COPY_HOST_PTR:
return Mem.COPY_BUFFER;
}
return null;
}
public static EnumSet valuesOf(final int bitfield) {
final List matching = new ArrayList();
final Mem[] values = Mem.values();
for (final Mem value : values) {
if((value.CONFIG & bitfield) != 0)
matching.add(value);
}
if(matching.isEmpty())
return EnumSet.noneOf(Mem.class);
else
return EnumSet.copyOf(matching);
}
public static int flagsToInt(final Mem[] flags) {
int clFlags = 0;
if (flags != null) {
for (int i = 0; i < flags.length; i++) {
clFlags |= flags[i].CONFIG;
}
}
if (clFlags == 0) {
clFlags = CL_MEM_READ_WRITE;
}
return clFlags;
}
}
/**
* Configures the mapping process.
* @see com.jogamp.opencl.CLCommandQueue#putMapBuffer(CLBuffer, com.jogamp.opencl.CLMemory.Map, boolean).
* @see com.jogamp.opencl.CLCommandQueue#putMapImage(CLImage2d, com.jogamp.opencl.CLMemory.Map, boolean)
* @see com.jogamp.opencl.CLCommandQueue#putMapImage(CLImage3d, com.jogamp.opencl.CLMemory.Map, boolean)
*/
public enum Map {
/**
* Enum representing CL_MAP_READ | CL_MAP_WRITE.
* This flag specifies that the memory object will be mapped for read and write operation.
*/
READ_WRITE(CL_MAP_READ | CL_MAP_WRITE),
/**
* Enum representing CL_MAP_WRITE.
* This flag specifies that the memory object will be mapped for write operation.
*/
WRITE(CL_MAP_WRITE),
/**
* Enum representing CL_MAP_READ.
* This flag specifies that the memory object will be mapped for read operation.
*/
READ(CL_MAP_READ);
/**
* Value of wrapped OpenCL flag.
*/
public final int FLAGS;
private Map(final int flags) {
this.FLAGS = flags;
}
public Map valueOf(final int flag) {
if(flag == WRITE.FLAGS)
return WRITE;
else if(flag == READ.FLAGS)
return READ;
else if(flag == READ_WRITE.FLAGS)
return READ_WRITE;
return null;
}
}
public enum GLObjectType {
GL_OBJECT_BUFFER(CL_GL_OBJECT_BUFFER),
GL_OBJECT_TEXTURE2D(CL_GL_OBJECT_TEXTURE2D),
GL_OBJECT_TEXTURE3D(CL_GL_OBJECT_TEXTURE3D),
GL_OBJECT_RENDERBUFFER(CL_GL_OBJECT_RENDERBUFFER);
public final int TYPE;
private GLObjectType(final int type) {
this.TYPE = type;
}
public static GLObjectType valueOf(final int type) {
if(type == CL_GL_OBJECT_BUFFER)
return GL_OBJECT_BUFFER;
else if(type == CL_GL_OBJECT_TEXTURE2D)
return GL_OBJECT_TEXTURE2D;
else if(type == CL_GL_OBJECT_TEXTURE3D)
return GL_OBJECT_TEXTURE3D;
else if(type == CL_GL_OBJECT_RENDERBUFFER)
return GL_OBJECT_RENDERBUFFER;
return null;
}
}
}
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