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-rwxr-xr-xsrc/java/com/jogamp/common/nio/Buffers.java83
-rw-r--r--src/junit/com/jogamp/common/nio/BuffersTest.java33
-rw-r--r--src/junit/com/jogamp/common/nio/TestPointerBufferEndian.java (renamed from src/junit/com/jogamp/gluegen/test/junit/runtime/TestPointerBufferEndian.java)13
-rw-r--r--src/junit/com/jogamp/common/nio/TestStructAccessorEndian.java (renamed from src/junit/com/jogamp/gluegen/test/junit/runtime/TestStructAccessorEndian.java)10
4 files changed, 86 insertions, 53 deletions
diff --git a/src/java/com/jogamp/common/nio/Buffers.java b/src/java/com/jogamp/common/nio/Buffers.java
index 9b7db23..2a1ab18 100755
--- a/src/java/com/jogamp/common/nio/Buffers.java
+++ b/src/java/com/jogamp/common/nio/Buffers.java
@@ -41,11 +41,13 @@ package com.jogamp.common.nio;
import java.nio.*;
/**
+ * Utility methods allowing easy {@link java.nio.Buffer} manipulations.
+ *
* @author Kenneth Russel
* @author Sven Gothel
* @author Michael Bien
*/
-public class Buffers {
+public final class Buffers {
public static final int SIZEOF_BYTE = 1;
public static final int SIZEOF_SHORT = 2;
@@ -55,7 +57,7 @@ public class Buffers {
public static final int SIZEOF_LONG = 8;
public static final int SIZEOF_DOUBLE = 8;
- protected Buffers() {}
+ private Buffers() {}
/**
* Allocates a new direct ByteBuffer with the specified number of
@@ -205,38 +207,45 @@ public class Buffers {
}
/**
- * Calls slice on the concrete buffer type.
+ * Calls slice on the specified buffer.
+ * @see #slice(java.nio.Buffer, int, int)
*/
- public static Buffer slice(Buffer buffer) {
+ public static <B extends Buffer> B slice(B buffer) {
if (buffer instanceof ByteBuffer) {
- return ((ByteBuffer) buffer).slice();
+ return (B) ((ByteBuffer) buffer).slice();
} else if (buffer instanceof IntBuffer) {
- return ((IntBuffer) buffer).slice();
+ return (B) ((IntBuffer) buffer).slice();
} else if (buffer instanceof ShortBuffer) {
- return ((ShortBuffer) buffer).slice();
+ return (B) ((ShortBuffer) buffer).slice();
} else if (buffer instanceof FloatBuffer) {
- return ((FloatBuffer) buffer).slice();
+ return (B) ((FloatBuffer) buffer).slice();
} else if (buffer instanceof DoubleBuffer) {
- return ((DoubleBuffer) buffer).slice();
+ return (B) ((DoubleBuffer) buffer).slice();
} else if (buffer instanceof LongBuffer) {
- return ((LongBuffer) buffer).slice();
+ return (B) ((LongBuffer) buffer).slice();
} else if (buffer instanceof CharBuffer) {
- return ((CharBuffer) buffer).slice();
+ return (B) ((CharBuffer) buffer).slice();
}
throw new IllegalArgumentException("unexpected buffer type: " + buffer.getClass());
}
/**
* Slices the specified buffer with offset as position and offset+size as limit.
+ * Concurrency warning: this method changes the buffers position and limit but
+ * will restore it before return.
*/
- public static Buffer slice(Buffer buffer, int offset, int size) {
+ public static <B extends Buffer> B slice(B buffer, int offset, int size) {
int pos = buffer.position();
int limit = buffer.limit();
- buffer.position(offset).limit(offset+size);
- Buffer slice = slice(buffer);
+ B slice = null;
+ try{
+ buffer.position(offset).limit(offset+size);
+ slice = slice(buffer);
+ }finally{
+ buffer.position(pos).limit(limit);
+ }
- buffer.position(pos).limit(limit);
return slice;
}
@@ -623,69 +632,69 @@ public class Buffers {
//----------------------------------------------------------------------
// Convenient put methods with generic target Buffer
//
- public static Buffer put(Buffer dest, Buffer src) {
+ public static <B extends Buffer> B put(B dest, Buffer src) {
if ((dest instanceof ByteBuffer) && (src instanceof ByteBuffer)) {
- return ((ByteBuffer) dest).put((ByteBuffer) src);
+ return (B) ((ByteBuffer) dest).put((ByteBuffer) src);
} else if ((dest instanceof ShortBuffer) && (src instanceof ShortBuffer)) {
- return ((ShortBuffer) dest).put((ShortBuffer) src);
+ return (B) ((ShortBuffer) dest).put((ShortBuffer) src);
} else if ((dest instanceof IntBuffer) && (src instanceof IntBuffer)) {
- return ((IntBuffer) dest).put((IntBuffer) src);
+ return (B) ((IntBuffer) dest).put((IntBuffer) src);
} else if ((dest instanceof FloatBuffer) && (src instanceof FloatBuffer)) {
- return ((FloatBuffer) dest).put((FloatBuffer) src);
+ return (B) ((FloatBuffer) dest).put((FloatBuffer) src);
} else if ((dest instanceof LongBuffer) && (src instanceof LongBuffer)) {
- return ((LongBuffer) dest).put((LongBuffer) src);
+ return (B) ((LongBuffer) dest).put((LongBuffer) src);
} else if ((dest instanceof DoubleBuffer) && (src instanceof DoubleBuffer)) {
- return ((DoubleBuffer) dest).put((DoubleBuffer) src);
+ return (B) ((DoubleBuffer) dest).put((DoubleBuffer) src);
} else if ((dest instanceof CharBuffer) && (src instanceof CharBuffer)) {
- return ((CharBuffer) dest).put((CharBuffer) src);
+ return (B) ((CharBuffer) dest).put((CharBuffer) src);
}
throw new IllegalArgumentException("Incompatible Buffer classes: dest = " + dest.getClass().getName() + ", src = " + src.getClass().getName());
}
- public static Buffer putb(Buffer dest, byte v) {
+ public static <B extends Buffer> B putb(B dest, byte v) {
if (dest instanceof ByteBuffer) {
- return ((ByteBuffer) dest).put(v);
+ return (B) ((ByteBuffer) dest).put(v);
} else if (dest instanceof ShortBuffer) {
- return ((ShortBuffer) dest).put((short) v);
+ return (B) ((ShortBuffer) dest).put((short) v);
} else if (dest instanceof IntBuffer) {
- return ((IntBuffer) dest).put((int) v);
+ return (B) ((IntBuffer) dest).put((int) v);
} else {
throw new IllegalArgumentException("Byte doesn't match Buffer Class: " + dest);
}
}
- public static Buffer puts(Buffer dest, short v) {
+ public static <B extends Buffer> B puts(B dest, short v) {
if (dest instanceof ShortBuffer) {
- return ((ShortBuffer) dest).put(v);
+ return (B) ((ShortBuffer) dest).put(v);
} else if (dest instanceof IntBuffer) {
- return ((IntBuffer) dest).put((int) v);
+ return (B) ((IntBuffer) dest).put((int) v);
} else {
throw new IllegalArgumentException("Short doesn't match Buffer Class: " + dest);
}
}
- public static void puti(Buffer dest, int v) {
+ public static <B extends Buffer> B puti(B dest, int v) {
if (dest instanceof IntBuffer) {
- ((IntBuffer) dest).put(v);
+ return (B) ((IntBuffer) dest).put(v);
} else {
throw new IllegalArgumentException("Integer doesn't match Buffer Class: " + dest);
}
}
- public static void putf(Buffer dest, float v) {
+ public static <B extends Buffer> B putf(B dest, float v) {
if (dest instanceof FloatBuffer) {
- ((FloatBuffer) dest).put(v);
+ return (B) ((FloatBuffer) dest).put(v);
/* TODO FixedPoint required
} else if (dest instanceof IntBuffer) {
- ((IntBuffer) dest).put(FixedPoint.toFixed(v));
+ return (B) ((IntBuffer) dest).put(FixedPoint.toFixed(v));
*/
} else {
throw new IllegalArgumentException("Float doesn't match Buffer Class: " + dest);
}
}
- public static void putd(Buffer dest, double v) {
+ public static <B extends Buffer> B putd(B dest, double v) {
if (dest instanceof FloatBuffer) {
- ((FloatBuffer) dest).put((float) v);
+ return (B) ((FloatBuffer) dest).put((float) v);
} else {
throw new IllegalArgumentException("Double doesn't match Buffer Class: " + dest);
}
diff --git a/src/junit/com/jogamp/common/nio/BuffersTest.java b/src/junit/com/jogamp/common/nio/BuffersTest.java
index 0b72cd4..836e46d 100644
--- a/src/junit/com/jogamp/common/nio/BuffersTest.java
+++ b/src/junit/com/jogamp/common/nio/BuffersTest.java
@@ -43,14 +43,45 @@ public class BuffersTest {
@Test
public void slice() {
+
IntBuffer buffer = Buffers.newDirectIntBuffer(6);
buffer.put(new int[]{1,2,3,4,5,6}).rewind();
- IntBuffer threefour = (IntBuffer)Buffers.slice(buffer, 2, 2);
+ IntBuffer threefour = Buffers.slice(buffer, 2, 2);
assertEquals(3, threefour.get(0));
assertEquals(4, threefour.get(1));
assertEquals(2, threefour.capacity());
+
+ assertEquals(0, buffer.position());
+ assertEquals(6, buffer.limit());
+
+ IntBuffer fourfivesix = Buffers.slice(buffer, 3, 3);
+
+ assertEquals(4, fourfivesix.get(0));
+ assertEquals(5, fourfivesix.get(1));
+ assertEquals(6, fourfivesix.get(2));
+ assertEquals(3, fourfivesix.capacity());
+
+ assertEquals(0, buffer.position());
+ assertEquals(6, buffer.limit());
+
+ IntBuffer onetwothree = Buffers.slice(buffer, 0, 3);
+
+ assertEquals(1, onetwothree.get(0));
+ assertEquals(2, onetwothree.get(1));
+ assertEquals(3, onetwothree.get(2));
+ assertEquals(3, onetwothree.capacity());
+
+ assertEquals(0, buffer.position());
+ assertEquals(6, buffer.limit());
+
+ // is it really sliced?
+ buffer.put(2, 42);
+
+ assertEquals(42, buffer.get(2));
+ assertEquals(42, onetwothree.get(2));
+
}
diff --git a/src/junit/com/jogamp/gluegen/test/junit/runtime/TestPointerBufferEndian.java b/src/junit/com/jogamp/common/nio/TestPointerBufferEndian.java
index afe3405..da232a2 100644
--- a/src/junit/com/jogamp/gluegen/test/junit/runtime/TestPointerBufferEndian.java
+++ b/src/junit/com/jogamp/common/nio/TestPointerBufferEndian.java
@@ -1,14 +1,9 @@
-package com.jogamp.gluegen.test.junit.runtime;
+package com.jogamp.common.nio;
-import com.jogamp.common.nio.*;
import com.jogamp.common.os.*;
-import java.nio.*;
-
import org.junit.Assert;
-import org.junit.Before;
-import org.junit.BeforeClass;
import org.junit.Test;
import static java.lang.System.*;
@@ -20,9 +15,9 @@ public class TestPointerBufferEndian {
String bitsProp = System.getProperty("sun.arch.data.model");
String os = System.getProperty("os.name");
String cpu = System.getProperty("os.arch");
- System.out.println("OS: <"+os+"> CPU: <"+cpu+"> Bits: <"+bitsPtr+"/"+bitsProp+">");
- System.out.println("CPU is: "+ (Platform.is32Bit()?"32":"64") + " bit");
- System.out.println("Buffer is in: "+ (Platform.isLittleEndian()?"little":"big") + " endian");
+ out.println("OS: <"+os+"> CPU: <"+cpu+"> Bits: <"+bitsPtr+"/"+bitsProp+">");
+ out.println("CPU is: "+ (Platform.is32Bit()?"32":"64") + " bit");
+ out.println("Buffer is in: "+ (Platform.isLittleEndian()?"little":"big") + " endian");
long[] valuesSource = { 0x0123456789ABCDEFL, 0x8877665544332211L, 0xAFFEDEADBEEFAFFEL };
long[] values32Bit = { 0x0000000089ABCDEFL, 0x0000000044332211L, 0x00000000BEEFAFFEL };
diff --git a/src/junit/com/jogamp/gluegen/test/junit/runtime/TestStructAccessorEndian.java b/src/junit/com/jogamp/common/nio/TestStructAccessorEndian.java
index 264c86b..09781ec 100644
--- a/src/junit/com/jogamp/gluegen/test/junit/runtime/TestStructAccessorEndian.java
+++ b/src/junit/com/jogamp/common/nio/TestStructAccessorEndian.java
@@ -1,4 +1,4 @@
-package com.jogamp.gluegen.test.junit.runtime;
+package com.jogamp.common.nio;
import com.jogamp.common.nio.*;
import com.jogamp.common.os.*;
@@ -6,8 +6,6 @@ import com.jogamp.common.os.*;
import java.nio.*;
import org.junit.Assert;
-import org.junit.Before;
-import org.junit.BeforeClass;
import org.junit.Test;
import static java.lang.System.*;
@@ -20,9 +18,9 @@ public class TestStructAccessorEndian {
String bitsProp = System.getProperty("sun.arch.data.model");
String os = System.getProperty("os.name");
String cpu = System.getProperty("os.arch");
- System.out.println("OS: <"+os+"> CPU: <"+cpu+"> Bits: <"+bitsPtr+"/"+bitsProp+">");
- System.out.println("CPU is: "+ (Platform.is32Bit()?"32":"64") + " bit");
- System.out.println("Buffer is in: "+ (Platform.isLittleEndian()?"little":"big") + " endian");
+ out.println("OS: <"+os+"> CPU: <"+cpu+"> Bits: <"+bitsPtr+"/"+bitsProp+">");
+ out.println("CPU is: "+ (Platform.is32Bit()?"32":"64") + " bit");
+ out.println("Buffer is in: "+ (Platform.isLittleEndian()?"little":"big") + " endian");
long[] valuesSource = { 0x0123456789ABCDEFL, 0x8877665544332211L, 0xAFFEDEADBEEFAFFEL };
ByteBuffer tst = Buffers.newDirectByteBuffer(Buffers.SIZEOF_LONG * valuesSource.length);
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-29 22:51:03 +0000