Examples with LongBuffer java.nio.LongBuffer used on opensource projects

Example 1 with LongBuffer

use of java.nio.LongBuffer in project jna by java-native-access.

the class BufferArgumentsMarshalTest method testLongBufferArgument.

public void testLongBufferArgument() {
    LongBuffer buf = LongBuffer.allocate(1024);
    final long MAGIC = 0x1234567887654321L;
    lib.fillInt64Buffer(buf, 1024, MAGIC);
    for (int i = 0; i < buf.capacity(); i++) {
        assertEquals("Bad value at index " + i, MAGIC, buf.get(i));
    }
}

Example 2 with LongBuffer

use of java.nio.LongBuffer in project jna by java-native-access.

the class BufferArgumentsMarshalTest method testDirectLongBufferArgument.

public void testDirectLongBufferArgument() {
    ByteBuffer buf = ByteBuffer.allocateDirect(1024 * 8).order(ByteOrder.nativeOrder());
    LongBuffer longBuf = buf.asLongBuffer();
    final long MAGIC = 0x1234567887654321L;
    lib.fillInt64Buffer(longBuf, 1024, MAGIC);
    for (int i = 0; i < longBuf.capacity(); i++) {
        assertEquals("Bad value at index " + i, MAGIC, longBuf.get(i));
    }
}

Example 3 with LongBuffer

use of java.nio.LongBuffer in project jna by java-native-access.

the class BufferArgumentsMarshalTest method testWrappedLongArrayArguent.

public void testWrappedLongArrayArguent() {
    long[] array = new long[1024];
    LongBuffer buf = LongBuffer.wrap(array, 512, 512);
    final long MAGIC = 0x1234567887654321L;
    lib.fillInt64Buffer(buf, 512, MAGIC);
    for (int i = 0; i < array.length; i++) {
        assertEquals("Bad value at index " + i, i < 512 ? 0 : MAGIC, array[i]);
    }
}

Example 4 with LongBuffer

use of java.nio.LongBuffer in project robolectric by robolectric.

the class ShadowBitmapTest method throwsExceptionCopyPixelsToLongBuffer.

@Test(expected = RuntimeException.class)
public void throwsExceptionCopyPixelsToLongBuffer() {
    Bitmap bitmapOriginal = Bitmap.createBitmap(10, 10, Bitmap.Config.ARGB_8888);
    LongBuffer buffer = LongBuffer.allocate(bitmapOriginal.getByteCount());
    bitmapOriginal.copyPixelsToBuffer(buffer);
}

Example 5 with LongBuffer

use of java.nio.LongBuffer in project robovm by robovm.

the class Main method storeValues.

static void storeValues(ByteBuffer directBuf) {
    directBuf.position(0);
    ShortBuffer shortBuf = directBuf.asShortBuffer();
    CharBuffer charBuf = directBuf.asCharBuffer();
    IntBuffer intBuf = directBuf.asIntBuffer();
    FloatBuffer floatBuf = directBuf.asFloatBuffer();
    LongBuffer longBuf = directBuf.asLongBuffer();
    DoubleBuffer doubleBuf = directBuf.asDoubleBuffer();
    final byte byteValue = -5;
    final short shortValue = -1234;
    final char charValue = 49200;
    final int intValue = 0x12345678;
    final float floatValue = 3.14159f;
    final long longValue = 0x1122334455667788L;
    final double doubleValue = Double.MIN_VALUE;
    if (directBuf.put(1, byteValue).get(1) != byteValue) {
        throw new RuntimeException("byte get/store failed");
    }
    if (shortBuf.put(1, shortValue).get(1) != shortValue) {
        throw new RuntimeException("short get/store failed");
    }
    if (charBuf.put(2, charValue).get(2) != charValue) {
        throw new RuntimeException("char get/store failed");
    }
    if (intBuf.put(2, intValue).get(2) != intValue) {
        throw new RuntimeException("int get/store failed");
    }
    if (floatBuf.put(3, floatValue).get(3) != floatValue) {
        throw new RuntimeException("float get/store failed");
    }
    if (longBuf.put(2, longValue).get(2) != longValue) {
        throw new RuntimeException("long get/store failed");
    }
    if (doubleBuf.put(3, doubleValue).get(3) != doubleValue) {
        throw new RuntimeException("double get/store failed");
    }
    directBuf.position(0);
    char[] outBuf = new char[directBuf.limit() * 2];
    for (int i = 0; i < directBuf.limit(); i++) {
        byte b = directBuf.get();
        outBuf[i * 2] = hexChar((byte) ((b >> 4) & 0x0f));
        outBuf[i * 2 + 1] = hexChar((byte) (b & 0x0f));
    }
    System.out.println(new String(outBuf));
}