started with high level abstraction.

1 files changed, 96 insertions, 0 deletions

diff --git a/src/com/mbien/opencl/CLPlatform.java b/src/com/mbien/opencl/CLPlatform.java
new file mode 100644
index 00000000..582e8abc
--- /dev/null
+++ b/src/com/mbien/opencl/CLPlatform.java
@@ -0,0 +1,96 @@
+package com.mbien.opencl;
+
+import java.nio.ByteBuffer;
+
+/**
+ *
+ * @author Michael Bien
+ */
+public class CLPlatform {
+
+    private final long platformID;
+    private final CL cl;
+
+    CLPlatform(CL cl, long id) {
+        this.platformID = id;
+        this.cl = cl;
+    }
+
+    public CLDevice[] listCLDevices() {
+
+        int[] intBuffer = new int[1];
+
+        //find all devices
+        int ret = cl.clGetDeviceIDs(platformID, CL.CL_DEVICE_TYPE_ALL, 0, null, 0, intBuffer, 0);
+        if(CL.CL_SUCCESS != ret)
+            throw new CLException(ret, "error while enumerating devices");
+
+        long[] deviceIDs = new long[intBuffer[0]];
+        ret = cl.clGetDeviceIDs(platformID, CL.CL_DEVICE_TYPE_ALL, deviceIDs.length, deviceIDs, 0, null, 0);
+        if(CL.CL_SUCCESS != ret)
+            throw new CLException(ret, "error while enumerating devices");
+
+        CLDevice[] devices = new CLDevice[deviceIDs.length];
+
+        //print device info
+        for (int i = 0; i < deviceIDs.length; i++)
+            devices[i] = new CLDevice(cl, deviceIDs[i]);
+
+        return devices;
+
+    }
+
+    /**
+     * Returns the platform name.
+     */
+    public String getName() {
+        return getInfoString(CL.CL_PLATFORM_NAME);
+    }
+
+    /**
+     * Returns the platform version.
+     */
+    public String getVersion() {
+        return getInfoString(CL.CL_PLATFORM_VERSION);
+    }
+
+    /**
+     * Returns the platform profile.
+     */
+    public String getProfile() {
+        return getInfoString(CL.CL_PLATFORM_PROFILE);
+    }
+
+    /**
+     * Returns the platform vendor.
+     */
+    public String getVendor() {
+        return getInfoString(CL.CL_PLATFORM_VENDOR);
+    }
+
+    /**
+     * Returns a info string in exchange for a key (CL_PLATFORM_*).
+     */
+    public String getInfoString(int key) {
+        long[] longBuffer = new long[1];
+        ByteBuffer bb = ByteBuffer.allocate(512);
+
+        int ret = cl.clGetPlatformInfo(platformID, key, bb.capacity(), bb, longBuffer, 0);
+        if(CL.CL_SUCCESS != ret)
+            throw new CLException(ret, "can not receive info string");
+
+        return new String(bb.array(), 0, (int)longBuffer[0]);
+    }
+
+    @Override
+    public String toString() {
+        return "CLPlatform [name:" + getName()
+                         +" vendor:"+getVendor()
+                         +" profile:"+getProfile()
+                         +" version:"+getVersion()+"]";
+    }
+
+
+
+
+}