/*
* @(#)AbstractVideoCodecCore.java
*
* Copyright (c) 2011 Werner Randelshofer, Goldau, Switzerland.
* All rights reserved.
*
* You may not use, copy or modify this file, except in compliance with the
* license agreement you entered into with Werner Randelshofer.
* For details see accompanying license terms.
*/
package org.monte.media;
import java.io.IOException;
import javax.imageio.stream.ImageInputStream;
import javax.imageio.stream.ImageOutputStream;
/**
* {@code AbstractVideoCodecCore}.
*
* @author Werner Randelshofer
* @version $Id: AbstractVideoCodecCore.java 299 2013-01-03 07:40:18Z werner $
*/
public class AbstractVideoCodecCore {
private byte[] byteBuf = new byte[4];
protected void writeInt24(ImageOutputStream out, int v) throws IOException {
byteBuf[0] = (byte) (v >>> 16);
byteBuf[1] = (byte) (v >>> 8);
byteBuf[2] = (byte) (v >>> 0);
out.write(byteBuf, 0, 3);
}
protected void writeInt24LE(ImageOutputStream out, int v) throws IOException {
byteBuf[2] = (byte) (v >>> 16);
byteBuf[1] = (byte) (v >>> 8);
byteBuf[0] = (byte) (v >>> 0);
out.write(byteBuf, 0, 3);
}
protected void writeInts24(ImageOutputStream out, int[] i, int off, int len) throws IOException {
if (off < 0 || len < 0 || off + len > i.length || off + len < 0) {
throw new IndexOutOfBoundsException("off < 0 || len < 0 || off + len > i.length!");
}
byte[] b = byteBuf;
for (int j = 0; j < len; j++) {
int v = i[off + j];
//b[boff++] = (byte)(v >>> 24);
b[0] = (byte) (v >>> 16);
b[1] = (byte) (v >>> 8);
b[2] = (byte) (v >>> 0);
out.write(b, 0, 3);
}
}
protected void writeInts24LE(ImageOutputStream out, int[] i, int off, int len) throws IOException {
if (off < 0 || len < 0 || off + len > i.length || off + len < 0) {
throw new IndexOutOfBoundsException("off < 0 || len < 0 || off + len > i.length!");
}
byte[] b = byteBuf;
for (int j = 0; j < len; j++) {
int v = i[off + j];
b[0] = (byte) (v >>> 0);
b[1] = (byte) (v >>> 8);
b[2] = (byte) (v >>> 16);
out.write(b, 0, 3);
}
}
protected void readInts24LE(ImageInputStream in, int[] i, int off, int len) throws IOException {
if (off < 0 || len < 0 || off + len > i.length || off + len < 0) {
throw new IndexOutOfBoundsException("off < 0 || len < 0 || off + len > i.length!, off=" + off + ", len=" + len);
}
byte[] b = byteBuf;
for (int j = off, end = off + len; j < end; j++) {
in.readFully(b, 0, 3);
int v = (b[0] & 0xff) | ((b[1] & 0xff) << 8) | ((b[2] & 0xff) << 16);
i[j] = v;
}
}
protected int readInt24LE(ImageInputStream in) throws IOException {
in.readFully(byteBuf, 0, 3);
return ((byteBuf[2] & 0xff) << 16) | ((byteBuf[1] & 0xff) << 8) | ((byteBuf[0] & 0xff) << 0);
}
/** Reads 16-bit RGB and converts it to 24-bit RGB. Endian is defined by input stream. */
protected void readRGBs565to24(ImageInputStream in, int[] i, int off, int len) throws IOException {
if (off < 0 || len < 0 || off + len > i.length || off + len < 0) {
throw new IndexOutOfBoundsException("off < 0 || len < 0 || off + len > i.length!, off=" + off + ", len=" + len);
}
for (int j = off, end = off + len; j < end; j++) {
int v = in.readUnsignedShort();
i[j] = ((v & 0xf800) << 8) | ((v & 0x3800) << 5)
| ((v & 0x07e0) << 5) | ((v & 0x0060) << 3)
| ((v & 0x001f) << 3) | ((v & 0x0007));
}
}
/** Reads 16-bit RGB and converts it to 24-bit RGB. Endian is defined by input stream. */
protected int readRGB565to24(ImageInputStream in) throws IOException {
int v = in.readUnsignedShort();
return ((v & 0xf800) << 8) | ((v & 0x3800) << 5)
| ((v & 0x07e0) << 5) | ((v & 0x0060) << 3)
| ((v & 0x001f) << 3) | ((v & 0x0007));
}
/** Reads 16-bit RGB and converts it to 24-bit RGB. Endian is defined by input stream. */
protected void readRGBs555to24(ImageInputStream in, int[] i, int off, int len) throws IOException {
if (off < 0 || len < 0 || off + len > i.length || off + len < 0) {
throw new IndexOutOfBoundsException("off < 0 || len < 0 || off + len > i.length!, off=" + off + ", len=" + len);
}
byte[] b = byteBuf;
for (int j = off, end = off + len; j < end; j++) {
int v = in.readUnsignedShort();
i[j]=((v & (0x1f<<10)) << 9) | ((v & (0x1c<<10)) << 4) // red
| ((v & (0x1f<<5)) << 6) | ((v & (0x1c<<5)) << 1) // green
| ((v & (0x1f<<0)) << 3) | ((v & (0x1c<<0)) >> 2); // blue;
}
}
/** Reads 16-bit RGB and converts it to 24-bit RGB. Endian is defined by input stream. */
protected int readRGB555to24(ImageInputStream in) throws IOException {
int v = in.readUnsignedShort();
return((v & (0x1f<<10)) << 9) | ((v & (0x1c<<10)) << 4) // red
| ((v & (0x1f<<5)) << 6) | ((v & (0x1c<<5)) << 1) // green
| ((v & (0x1f<<0)) << 3) | ((v & (0x1c<<0)) >> 2); // blue;
}
/** Reads 16-bit RGB and converts it to 24-bit RGB. Endian is defined by input stream. */
protected void readRGBs555to24LE(ImageInputStream in, int[] i, int off, int len) throws IOException {
if (off < 0 || len < 0 || off + len > i.length || off + len < 0) {
throw new IndexOutOfBoundsException("off < 0 || len < 0 || off + len > i.length!, off=" + off + ", len=" + len);
}
byte[] b = byteBuf;
for (int j = off, end = off + len; j < end; j++) {
int v = in.readUnsignedShort();
i[j]=((v & (0x1f<<0)) << 19) | ((v & (0x1c<<0)) << 14) // red
| ((v & (0x1f<<5)) << 6) | ((v & (0x1c<<5)) << 1) // green
| ((v & (0x1f<<10)) >>> 7) | ((v & (0x1c<<10)) >>> 12); // blue;
/* i[j]=((v & (0x1f<<10)) << 9) | ((v & (0x1c<<10)) << 4) // red
| ((v & (0x1f<<5)) << 6) | ((v & (0x1c<<5)) << 1) // green
| ((v & (0x1f<<0)) << 3) | ((v & (0x1c<<0)) >> 2); // blue;*/
}
}
/** Reads 16-bit RGB and converts it to 24-bit RGB. Endian is defined by input stream. */
protected int readRGB555to24LE(ImageInputStream in) throws IOException {
int v = in.readUnsignedShort();
return((v & (0x1f<<0)) << 19) | ((v & (0x1c<<0)) << 14) // red
| ((v & (0x1f<<5)) << 6) | ((v & (0x1c<<5)) << 1) // green
| ((v & (0x1f<<10)) >>> 7) | ((v & (0x1c<<10)) >>> 12); // blue;
/* return((v & (0x1f<<10)) << 9) | ((v & (0x1c<<10)) << 4) // red
| ((v & (0x1f<<5)) << 6) | ((v & (0x1c<<5)) << 1) // green
| ((v & (0x1f<<0)) << 3) | ((v & (0x1c<<0)) >> 2); // blue;
*/ }
}