1 files changed, 120 insertions, 0 deletions
diff --git a/src/com/mbien/opencl/CLSampler.java b/src/com/mbien/opencl/CLSampler.java
new file mode 100644
index 00000000..6977e2bd
--- /dev/null
+++ b/src/com/mbien/opencl/CLSampler.java
@@ -0,0 +1,120 @@
+package com.mbien.opencl;
+
+import java.nio.Buffer;
+
+import static com.mbien.opencl.CLException.*;
+import static com.mbien.opencl.CL.*;
+
+/**
+ * Object representing an OpenCL sampler.
+ * @author Michael Bien
+ */
+public class CLSampler implements CLResource {
+
+    public final long ID;
+
+    private final CLContext context;
+    private final CL cl;
+
+    private final CLSamplerInfoAccessor samplerInfo;
+
+    CLSampler(CLContext context, AddressingMode addrMode, FilteringMode filtMode, boolean normalizedCoords) {
+        
+        this.context = context;
+        this.cl = context.cl;
+
+        this.samplerInfo = new CLSamplerInfoAccessor();
+
+        int[] error = new int[1];
+
+        ID = cl.clCreateSampler(context.ID, normalizedCoords?CL_TRUE:CL_FALSE, addrMode.MODE, filtMode.MODE, error, 0);
+
+        checkForError(error[0], "can not create sampler");
+    }
+
+    public FilteringMode getFilteringMode() {
+        int info = (int)samplerInfo.getLong(CL_SAMPLER_FILTER_MODE);
+        return FilteringMode.valueOf(info);
+    }
+
+    public AddressingMode getAddressingMode() {
+        int info = (int)samplerInfo.getLong(CL_SAMPLER_ADDRESSING_MODE);
+        return AddressingMode.valueOf(info);
+    }
+
+    public boolean hasNormalizedCoords() {
+        return samplerInfo.getLong(CL_SAMPLER_NORMALIZED_COORDS) == CL_TRUE;
+    }
+
+    public void release() {
+        int ret = cl.clReleaseSampler(ID);
+        context.onSamplerReleased(this);
+        checkForError(ret, "can not release sampler");
+    }
+
+    private class CLSamplerInfoAccessor extends CLInfoAccessor {
+
+        @Override
+        protected int getInfo(int name, long valueSize, Buffer value, long[] valueSizeRet, int valueSizeRetOffset) {
+            return cl.clGetSamplerInfo(ID, name, valueSize, value, valueSizeRet, valueSizeRetOffset);
+        }
+
+    }
+
+    public enum FilteringMode {
+
+        NEAREST(CL_FILTER_NEAREST),
+        LINEAR(CL_FILTER_LINEAR);
+
+        /**
+         * Value of wrapped OpenCL sampler filtering mode type.
+         */
+        public final int MODE;
+
+        private FilteringMode(int mode) {
+            this.MODE = mode;
+        }
+
+        public static FilteringMode valueOf(int mode) {
+            switch(mode) {
+                case(CL_FILTER_NEAREST):
+                    return NEAREST;
+                case(CL_FILTER_LINEAR):
+                    return LINEAR;
+            }
+            return null;
+        }
+    }
+
+    public enum AddressingMode {
+
+        REPEAT(CL_ADDRESS_REPEAT),
+        CLAMP_TO_EDGE(CL_ADDRESS_CLAMP_TO_EDGE),
+        CLAMP(CL_ADDRESS_CLAMP),
+        NONE(CL_ADDRESS_NONE);
+
+        /**
+         * Value of wrapped OpenCL sampler addressing mode type.
+         */
+        public final int MODE;
+
+        private AddressingMode(int mode) {
+            this.MODE = mode;
+        }
+
+        public static AddressingMode valueOf(int mode) {
+            switch(mode) {
+                case(CL_ADDRESS_REPEAT):
+                    return REPEAT;
+                case(CL_ADDRESS_CLAMP_TO_EDGE):
+                    return CLAMP_TO_EDGE;
+                case(CL_ADDRESS_CLAMP):
+                    return CLAMP;
+                case(CL_ADDRESS_NONE):
+                    return NONE;
+            }
+            return null;
+        }
+    }
+
+}