From b3881a0924ecbe17cf27cededeae8df40b2d6933 Mon Sep 17 00:00:00 2001
From: Michael Bien <mbien@fh-landshut.de>
Date: Thu, 22 Oct 2009 01:26:53 +0200
Subject: api cleanup and refactoring.

---
 src/com/mbien/opencl/CLBuffer.java | 84 +++++++++++++++++++++++++++++++++++++-
 1 file changed, 82 insertions(+), 2 deletions(-)

(limited to 'src/com/mbien/opencl/CLBuffer.java')

diff --git a/src/com/mbien/opencl/CLBuffer.java b/src/com/mbien/opencl/CLBuffer.java
index f9f3a239..7dcd2928 100644
--- a/src/com/mbien/opencl/CLBuffer.java
+++ b/src/com/mbien/opencl/CLBuffer.java
@@ -9,13 +9,93 @@ import static com.mbien.opencl.CLException.*;
  */
 public class CLBuffer {
 
+    public enum MEM {
+
+        /**
+         * This flag specifies that the memory object will be read and
+         * written by a kernel.
+         */
+        READ_WRITE(CL.CL_MEM_READ_WRITE),
+
+        /**
+         * 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.CL_MEM_WRITE_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.CL_MEM_READ_ONLY);
+
+        /**
+         * 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_HOST_PTR(CL.CL_MEM_USE_HOST_PTR),
+
+//        ALLOC_HOST_PTR(CL.CL_MEM_ALLOC_HOST_PTR), // this is the default in java world anyway
+
+        /**
+         * If CL_MEM_COPY_HOST_PTR 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.<br/>
+         * COPY_HOST_PTR and USE_HOST_PTR are mutually exclusive.
+         */
+//        COPY_HOST_PTR(CL.CL_MEM_COPY_HOST_PTR);
+
+        /**
+         * Value of wrapped OpenCL flag.
+         */
+        public final int CL_FLAG;
+
+        private MEM(int CL_TYPE) {
+            this.CL_FLAG = CL_TYPE;
+        }
+
+        public static MEM valueOf(int bufferFlag) {
+            switch(bufferFlag) {
+                case(CL.CL_MEM_READ_WRITE):
+                    return READ_WRITE;
+                case(CL.CL_MEM_READ_ONLY):
+                    return READ_ONLY;
+//                case(CL.CL_MEM_USE_HOST_PTR):
+//                    return USE_HOST_PTR;
+//                case(CL.CL_MEM_ALLOC_HOST_PTR):
+//                    return ALLOC_HOST_PTR;
+//                case(CL.CL_MEM_COPY_HOST_PTR):
+//                    return COPY_HOST_PTR;
+            }
+            return null;
+        }
+
+        static int flagsToInt(MEM[] flags) {
+            int clFlags = CL.CL_MEM_READ_WRITE;
+            if(flags != null) {
+                for (int i = 0; i < flags.length; i++) {
+                    clFlags |= flags[i].CL_FLAG;
+                }
+            }
+            return clFlags;
+        }
+
+    }
+
+
     public final ByteBuffer buffer;
     public final long ID;
     
     private final CLContext context;
     private final CL cl;
 
-    CLBuffer(CLContext context, int flags, ByteBuffer directBuffer) {
+    CLBuffer(CLContext context, ByteBuffer directBuffer, int flags) {
         
         if(!directBuffer.isDirect())
             throw new IllegalArgumentException("buffer is not a direct buffer");
@@ -34,7 +114,7 @@ public class CLBuffer {
 
     public void release() {
         int ret = cl.clReleaseMemObject(ID);
-        context.bufferReleased(this);
+        context.onBufferReleased(this);
         checkForError(ret, "can not release mem object");
     }
 
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