Java Code Examples for java.nio.ByteBuffer#asIntBuffer()
The following examples show how to use
java.nio.ByteBuffer#asIntBuffer() .
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Example 1
| Source File: FileSerializationBenchmark.java From imhotep with Apache License 2.0 | 6 votes |
|
@Override
public void serialize(int[] a, File file) throws IOException {
FileChannel ch = new RandomAccessFile(file, "rw").getChannel();
ByteBuffer buffer = ByteBuffer.allocateDirect(8192);
buffer.order(ByteOrder.BIG_ENDIAN);
IntBuffer intBuffer = buffer.asIntBuffer();
for (int i = 0; i < a.length; i += 2048) {
intBuffer.clear();
int lim = Math.min(2048, a.length - i);
for (int j = 0; j < lim; ++j) {
intBuffer.put(j, a[i+j]);
}
buffer.position(0).limit(4*lim);
ch.write(buffer);
}
ch.close();
}
Example 2
| Source File: FileSerializationBenchmark.java From imhotep with Apache License 2.0 | 6 votes |
|
@Override
public int[] deserialize(File file) throws IOException {
FileChannel ch = new RandomAccessFile(file, "r").getChannel();
int[] ret = new int[(int)(file.length() / 4)];
ByteBuffer buffer = ByteBuffer.allocateDirect(8192);
buffer.order(ByteOrder.LITTLE_ENDIAN);
IntBuffer intBuffer = buffer.asIntBuffer();
for (int i = 0; i < ret.length; i += 2048) {
buffer.clear();
int lim = ch.read(buffer) / 4;
intBuffer.clear();
intBuffer.get(ret, i, lim);
}
ch.close();
return ret;
}
Example 3
| Source File: ShapeBuffer.java From AndroidDemoProjects with Apache License 2.0 | 6 votes |
|
public ShapeBuffer() {
mVertexData = new float[COORDS_PER_VERTEX * MAX_BUFFER_SIZE];
// All 4 color channels are packed into a single int, so only need one int per vertex.
mColorData = new int[MAX_BUFFER_SIZE];
clear();
ByteBuffer bb;
// size = buffer size x4 values per color, x1 bytes per color.
bb = ByteBuffer.allocateDirect(MAX_BUFFER_SIZE * COLOR_STRIDE);
bb.order(ByteOrder.nativeOrder());
mColorBuffer = bb.asIntBuffer();
// size = buffer size x3 values per coord, x4 bytes per float
bb = ByteBuffer.allocateDirect(MAX_BUFFER_SIZE * VERTEX_STRIDE);
bb.order(ByteOrder.nativeOrder());
mVertexBuffer = bb.asFloatBuffer();
}
Example 4
| Source File: FileSerializationBenchmark.java From imhotep with Apache License 2.0 | 6 votes |
|
@Override
public int[] deserialize(File file) throws IOException {
FileChannel ch = new RandomAccessFile(file, "r").getChannel();
int[] ret = new int[(int)(file.length() / 4)];
ByteBuffer buffer = ByteBuffer.allocateDirect(8192);
buffer.order(ByteOrder.BIG_ENDIAN);
IntBuffer intBuffer = buffer.asIntBuffer();
for (int i = 0; i < ret.length; i += 2048) {
buffer.clear();
int lim = ch.read(buffer) / 4;
intBuffer.clear();
intBuffer.get(ret, i, lim);
}
ch.close();
return ret;
}
Example 5
| Source File: SmallGLUT.java From opengl with Apache License 2.0 | 5 votes |
|
IntBuffer getIntBufferFromIntArray( int array[]) {
ByteBuffer tempBuffer = ByteBuffer.allocateDirect(array.length * 4);
tempBuffer.order(ByteOrder.nativeOrder());
IntBuffer buffer = tempBuffer.asIntBuffer();
buffer.put(array);
buffer.position(0);
return buffer;
}
Example 6
| Source File: FileSerializationBenchmark.java From imhotep with Apache License 2.0 | 5 votes |
|
@Override
public void serialize(int[] a, File file) throws IOException {
FileChannel ch = new RandomAccessFile(file, "rw").getChannel();
ByteBuffer buffer = ByteBuffer.allocateDirect(8192);
buffer.order(ByteOrder.LITTLE_ENDIAN);
IntBuffer intBuffer = buffer.asIntBuffer();
for (int i = 0; i < a.length; i += 2048) {
intBuffer.clear();
int lim = Math.min(2048, a.length - i);
intBuffer.put(a, i, lim);
buffer.position(0).limit(4*lim);
ch.write(buffer);
}
ch.close();
}
Example 7
| Source File: SmallGLUT.java From opengl with Apache License 2.0 | 5 votes |
|
IntBuffer getIntBufferFromIntArray( int array[]) {
ByteBuffer tempBuffer = ByteBuffer.allocateDirect(array.length * 4);
tempBuffer.order(ByteOrder.nativeOrder());
IntBuffer buffer = tempBuffer.asIntBuffer();
buffer.put(array);
buffer.position(0);
return buffer;
}
Example 8
| Source File: TypedArrayFunctions.java From es6draft with MIT License | 5 votes |
|
private static final IntBuffer asIntBuffer(ArrayBuffer buffer, int byteOffset, int length) {
ByteBuffer data = byteBuffer(buffer);
int byteLength = Integer.BYTES * length;
data.limit(byteOffset + byteLength).position(byteOffset);
IntBuffer view = data.asIntBuffer();
data.clear();
return view;
}
Example 9
| Source File: GeometryUtils.java From BIMserver with GNU Affero General Public License v3.0 | 5 votes |
|
public static byte[] intArrayToByteArray(int[] indices) {
if (indices == null) {
return null;
}
ByteBuffer buffer = ByteBuffer.wrap(new byte[indices.length * 4]);
buffer.order(ByteOrder.LITTLE_ENDIAN);
IntBuffer asIntBuffer = buffer.asIntBuffer();
for (int i : indices) {
asIntBuffer.put(i);
}
return buffer.array();
}
Example 10
| Source File: OfflineGeometryGenerator.java From BIMserver with GNU Affero General Public License v3.0 | 5 votes |
|
private byte[] intArrayToByteArray(int[] indices) {
if (indices == null) {
return null;
}
ByteBuffer buffer = ByteBuffer.wrap(new byte[indices.length * 4]);
buffer.order(ByteOrder.LITTLE_ENDIAN);
IntBuffer asIntBuffer = buffer.asIntBuffer();
for (int i : indices) {
asIntBuffer.put(i);
}
return buffer.array();
}
Example 11
| Source File: LittleEndianBinUtils.java From BIMserver with GNU Affero General Public License v3.0 | 5 votes |
|
public static byte[] intToByteArray(int inInt) {
byte[] bArray = new byte[4];
ByteBuffer bBuffer = ByteBuffer.wrap(bArray);
bBuffer.order(ByteOrder.LITTLE_ENDIAN);
IntBuffer lBuffer = bBuffer.asIntBuffer();
lBuffer.put(inInt);
return bArray;
}
Example 12
| Source File: BufferTest.java From j2objc with Apache License 2.0 | 5 votes |
|
private void testBuffersIndependentLimit(ByteBuffer b) {
CharBuffer c = b.asCharBuffer();
b.limit(b.capacity()); c.put(1, (char)1);
b.limit(0); c.put(1, (char)1);
b.limit(b.capacity());
ShortBuffer s = b.asShortBuffer();
b.limit(b.capacity()); s.put(1, (short)1);
b.limit(0); s.put(1, (short)1);
b.limit(b.capacity());
IntBuffer i = b.asIntBuffer();
i.put(1, (int)1);
b.limit(0); i.put(1, (int)1);
b.limit(b.capacity());
LongBuffer l = b.asLongBuffer();
l.put(1, (long)1);
b.limit(0); l.put(1, (long)1);
b.limit(b.capacity());
FloatBuffer f = b.asFloatBuffer();
f.put(1, (float)1);
b.limit(0); f.put(1, (float)1);
b.limit(b.capacity());
DoubleBuffer d = b.asDoubleBuffer();
d.put(1, (double)1);
b.limit(0); d.put(1, (double)1);
}
Example 13
| Source File: CMap.java From TencentKona-8 with GNU General Public License v2.0 | 4 votes |
|
CMapFormat12(ByteBuffer buffer, int offset, char[] xlat) {
if (xlat != null) {
throw new RuntimeException("xlat array for cmap fmt=12");
}
buffer.position(offset+12);
numGroups = buffer.getInt() & INTMASK;
// A map group record is three uint32's making for 12 bytes total
if (buffer.remaining() < (12 * (long)numGroups)) {
throw new RuntimeException("Format 12 table exceeded");
}
startCharCode = new long[numGroups];
endCharCode = new long[numGroups];
startGlyphID = new int[numGroups];
buffer = buffer.slice();
IntBuffer ibuffer = buffer.asIntBuffer();
for (int i=0; i<numGroups; i++) {
startCharCode[i] = ibuffer.get() & INTMASK;
endCharCode[i] = ibuffer.get() & INTMASK;
startGlyphID[i] = ibuffer.get() & INTMASK;
}
/* Finds the high bit by binary searching through the bits */
int value = numGroups;
if (value >= 1 << 16) {
value >>= 16;
highBit += 16;
}
if (value >= 1 << 8) {
value >>= 8;
highBit += 8;
}
if (value >= 1 << 4) {
value >>= 4;
highBit += 4;
}
if (value >= 1 << 2) {
value >>= 2;
highBit += 2;
}
if (value >= 1 << 1) {
value >>= 1;
highBit += 1;
}
power = 1 << highBit;
extra = numGroups - power;
}
Example 14
| Source File: CMap.java From dragonwell8_jdk with GNU General Public License v2.0 | 4 votes |
|
CMapFormat12(ByteBuffer buffer, int offset, char[] xlat) {
if (xlat != null) {
throw new RuntimeException("xlat array for cmap fmt=12");
}
buffer.position(offset+12);
numGroups = buffer.getInt() & INTMASK;
// A map group record is three uint32's making for 12 bytes total
if (buffer.remaining() < (12 * (long)numGroups)) {
throw new RuntimeException("Format 12 table exceeded");
}
startCharCode = new long[numGroups];
endCharCode = new long[numGroups];
startGlyphID = new int[numGroups];
buffer = buffer.slice();
IntBuffer ibuffer = buffer.asIntBuffer();
for (int i=0; i<numGroups; i++) {
startCharCode[i] = ibuffer.get() & INTMASK;
endCharCode[i] = ibuffer.get() & INTMASK;
startGlyphID[i] = ibuffer.get() & INTMASK;
}
/* Finds the high bit by binary searching through the bits */
int value = numGroups;
if (value >= 1 << 16) {
value >>= 16;
highBit += 16;
}
if (value >= 1 << 8) {
value >>= 8;
highBit += 8;
}
if (value >= 1 << 4) {
value >>= 4;
highBit += 4;
}
if (value >= 1 << 2) {
value >>= 2;
highBit += 2;
}
if (value >= 1 << 1) {
value >>= 1;
highBit += 1;
}
power = 1 << highBit;
extra = numGroups - power;
}
Example 15
| Source File: CacheWriter.java From netbeans with Apache License 2.0 | 4 votes |
|
public void write (BufferedImage img, boolean append, String id) throws IOException {
File out = getOutfile(append);
File meta = getMetafile(append);
System.err.println("Writing to " + out + " and " + meta);
int width = img.getWidth();
int height = img.getHeight();
ByteBuffer buf = ByteBuffer.allocate(width * height * 4);
IntBuffer ibuf = buf.asIntBuffer();
for (int y=0; y < height; y++) {
for (int x=0; x < width; x++) {
int pixel = img.getRGB(x, y);
ibuf.put(pixel);
}
}
FileOutputStream fileOut = new FileOutputStream (out, append);
FileOutputStream metaOut = new FileOutputStream (meta, append);
FileChannel fileChannel = fileOut.getChannel();
if (append) {
fileChannel.position(out.length());
}
//Check the size of the file we're creating - nio bytebuffers are
//limited to dealing with files < Integer.MAX_VALUE large
if (fileChannel.position() + buf.limit() > Integer.MAX_VALUE) {
//Can handle this and create a second cache file in the unlikely
//event this comes to pass
throw new BufferOverflowException();
}
long start = fileChannel.position();
fileChannel.write(buf);
long end = fileChannel.position();
fileChannel.force(true);
fileChannel.close();
FileChannel metaChannel = metaOut.getChannel();
if (append) {
metaChannel.position(meta.length());
}
metaChannel.write(getMetadata(img, id, start, end));
metaChannel.force(true);
metaChannel.close();
}
Example 16
| Source File: Utils.java From amcgala with Educational Community License v2.0 | 4 votes |
|
public final static String saveAsBMP(String filename, ByteBuffer pixel_data, int width, int height) {
long before = System.currentTimeMillis();
int pad = 4 - (width * 3) % 4;
if (pad == 4)
pad = 0;
int size = (width * 3 + pad) * height + 54;
ByteBuffer buffer = ByteBuffer.allocate(size);
//write BMP header
buffer.put((byte) 0x42); // signature, must be 4D42 hex
buffer.put((byte) 0x4D); // ...
buffer.put((byte) (size & 0x000000ff)); // size of BMP file in bytes
buffer.put((byte) ((size & 0x0000ff00) >> 8)); // ...
buffer.put((byte) ((size & 0x00ff0000) >> 16)); // ...
buffer.put((byte) ((size & 0xff000000) >> 24)); // ...
buffer.put((byte) 0); // reserved, must be zero
buffer.put((byte) 0); // reserved, must be zero
buffer.put((byte) 0); // reserved, must be zero
buffer.put((byte) 0); // reserved, must be zero
buffer.put((byte) 54); // offset to start of image data in bytes
buffer.put((byte) 0); // ...
buffer.put((byte) 0); // ...
buffer.put((byte) 0); // ...
buffer.put((byte) 40); // size of BITMAPINFOHEADER structure, must be 40
buffer.put((byte) 0); // ...
buffer.put((byte) 0); // ...
buffer.put((byte) 0); // ...
buffer.put((byte) (width & 0x000000ff)); // image width in pixels
buffer.put((byte) ((width & 0x0000ff00) >> 8)); // ...
buffer.put((byte) ((width & 0x00ff0000) >> 16)); // ...
buffer.put((byte) ((width & 0xff000000) >> 24)); // ...
buffer.put((byte) (height & 0x000000ff)); // image width in pixels
buffer.put((byte) ((height & 0x0000ff00) >> 8)); // ...
buffer.put((byte) ((height & 0x00ff0000) >> 16));// ...
buffer.put((byte) ((height & 0xff000000) >> 24));// ...
buffer.put((byte) 1); // number of planes in the image, must be 1
buffer.put((byte) 0); // ...
buffer.put((byte) 24); // number of bits per pixel (1, 4, 8, or 24)
buffer.put((byte) 0); // ...
buffer.put((byte) 0); // compression type (0=none, 1=RLE-8, 2=RLE-4)
buffer.put((byte) 0); // ...
buffer.put((byte) 0); // ...
buffer.put((byte) 0); // ...
buffer.put((byte) ((size - 54) & 0x000000ff)); // size of image data in bytes (including padding)
buffer.put((byte) (((size - 54) & 0x0000ff00) >> 8)); // ...
buffer.put((byte) (((size - 54) & 0x00ff0000) >> 16)); // ...
buffer.put((byte) (((size - 54) & 0xff000000) >> 24)); // ...
buffer.put((byte) 0); // horizontal resolution in pixels per meter (unreliable)
buffer.put((byte) 0); // ...
buffer.put((byte) 0); // ...
buffer.put((byte) 0); // ...
buffer.put((byte) 0); // vertical resolution in pixels per meter (unreliable)
buffer.put((byte) 0); // ...
buffer.put((byte) 0); // ...
buffer.put((byte) 0); // ...
buffer.put((byte) 0); // number of colors in image, or zero
buffer.put((byte) 0); // ...
buffer.put((byte) 0); // ...
buffer.put((byte) 0); // ...
buffer.put((byte) 0); // number of important colors, or zero
buffer.put((byte) 0); // ...
buffer.put((byte) 0); // ...
buffer.put((byte) 0); // ...
pixel_data.rewind();
IntBuffer int_pixel_data = pixel_data.asIntBuffer();
//write BMP image data
for (int y = height - 1; y >= 0; y--) {
for (int x = 0; x < width; x++) {
int pixel = int_pixel_data.get(y * width + x);
byte r = (byte) ((pixel >> 24) & 0xff);
byte g = (byte) ((pixel >> 16) & 0xff);
byte b = (byte) ((pixel >> 8) & 0xff);
buffer.put(b);
buffer.put(g);
buffer.put(r);
}
for (int i = 0; i < pad; i++) {
buffer.put((byte) 0);
}
}
buffer.rewind();
String name = filename + ".bmp";
String image_path = System.getProperty("user.home") + File.separator + name;
File image_file = new File(image_path);
try {
FileOutputStream fout = new FileOutputStream(image_file);
fout.write(buffer.array());
fout.flush();
fout.close();
} catch (IOException e) {
e.printStackTrace();
}
long after = System.currentTimeMillis();
System.out.println("File " + filename + " saved in " + (after - before) + " milliseconds");
return name;
}
Example 17
| Source File: CMap.java From openjdk-jdk8u with GNU General Public License v2.0 | 4 votes |
|
CMapFormat12(ByteBuffer buffer, int offset, char[] xlat) {
if (xlat != null) {
throw new RuntimeException("xlat array for cmap fmt=12");
}
buffer.position(offset+12);
numGroups = buffer.getInt() & INTMASK;
// A map group record is three uint32's making for 12 bytes total
if (buffer.remaining() < (12 * (long)numGroups)) {
throw new RuntimeException("Format 12 table exceeded");
}
startCharCode = new long[numGroups];
endCharCode = new long[numGroups];
startGlyphID = new int[numGroups];
buffer = buffer.slice();
IntBuffer ibuffer = buffer.asIntBuffer();
for (int i=0; i<numGroups; i++) {
startCharCode[i] = ibuffer.get() & INTMASK;
endCharCode[i] = ibuffer.get() & INTMASK;
startGlyphID[i] = ibuffer.get() & INTMASK;
}
/* Finds the high bit by binary searching through the bits */
int value = numGroups;
if (value >= 1 << 16) {
value >>= 16;
highBit += 16;
}
if (value >= 1 << 8) {
value >>= 8;
highBit += 8;
}
if (value >= 1 << 4) {
value >>= 4;
highBit += 4;
}
if (value >= 1 << 2) {
value >>= 2;
highBit += 2;
}
if (value >= 1 << 1) {
value >>= 1;
highBit += 1;
}
power = 1 << highBit;
extra = numGroups - power;
}
Example 18
| Source File: NativeInt32Array.java From jdk8u_nashorn with GNU General Public License v2.0 | 4 votes |
|
@Override
public Int32ArrayData createArrayData(final ByteBuffer nb, final int start, final int length) {
return new Int32ArrayData(nb.asIntBuffer(), start, length);
}
Example 19
| Source File: GLIntImage.java From tribaltrouble with GNU General Public License v2.0 | 4 votes |
|
public GLIntImage(int width, int height, ByteBuffer pixel_data, int format) {
super(width, height, pixel_data, format);
pixels = pixel_data.asIntBuffer();
}
Example 20
| Source File: CursorLoader.java From slick2d-maven with BSD 3-Clause "New" or "Revised" License | 3 votes |
|
/**
* Get a cursor based on a image reference on the classpath. The image
* is assumed to be a set/strip of cursor animation frames running from top to
* bottom.
*
* @param ref The reference to the image to be loaded
* @param x The x-coordinate of the cursor hotspot (left -> right)
* @param y The y-coordinate of the cursor hotspot (bottom -> top)
* @param width The x width of the cursor
* @param height The y height of the cursor
* @param cursorDelays image delays between changing frames in animation
*
* @return The created cursor
* @throws IOException Indicates a failure to load the image
* @throws LWJGLException Indicates a failure to create the hardware cursor
*/
public Cursor getAnimatedCursor(String ref,int x,int y, int width, int height, int[] cursorDelays) throws IOException, LWJGLException {
IntBuffer cursorDelaysBuffer = ByteBuffer.allocateDirect(cursorDelays.length*4).order(ByteOrder.nativeOrder()).asIntBuffer();
for (int i=0;i<cursorDelays.length;i++) {
cursorDelaysBuffer.put(cursorDelays[i]);
}
cursorDelaysBuffer.flip();
LoadableImageData imageData = new TGAImageData();
ByteBuffer buf = imageData.loadImage(ResourceLoader.getResourceAsStream(ref), false, null);
return new Cursor(width, height, x, y, cursorDelays.length, buf.asIntBuffer(), cursorDelaysBuffer);
}
