/*
* @(#)TSCCCodec.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.jmf.codec.video;
import org.monte.media.avi.TechSmithCodecCore;
import org.monte.media.io.SeekableByteArrayOutputStream;
import com.sun.media.format.AviVideoFormat;
import java.awt.Dimension;
import java.io.IOException;
import java.util.Arrays;
import javax.media.Buffer;
import javax.media.Format;
import javax.media.ResourceUnavailableException;
import javax.media.format.IndexedColorFormat;
import javax.media.format.RGBFormat;
import javax.media.format.VideoFormat;
/**
* JMF Codec for the TechSmith Screen-Capture format.
* <p>
* This codec can decode24 and encode the format to/from a JMF {@code RGBFormat}
* or a {@code IndexedColorFormat}.
* <p>
* See {@link TechSmithCodecCore} for a description of the format.
*
* @author Werner Randelshofer
* @version $Id: TSCCCodec.java 304 2013-01-03 07:45:40Z werner $
*/
public class TSCCCodec extends AbstractVideoDecoder {
/** RGB bit masks */
protected static final int bMask = 0x000000ff;
protected static final int gMask = 0x0000ff00;
protected static final int rMask = 0x00ff0000;
private Object pixels;
private Object previousPixels;
private long previousSequenceNumber;
private int frameCounter;
private TechSmithCodecCore state;
public TSCCCodec() {
supportedInputFormats = new VideoFormat[]{
new VideoFormat("tscc"),
//
new RGBFormat(
null, // dimension
Format.NOT_SPECIFIED, // max data length
Format.intArray, // data type
Format.NOT_SPECIFIED, // frame rate
32, // bits per pixel
rMask, gMask, bMask, // red, green, blue mask
Format.NOT_SPECIFIED, // pixel stride
Format.NOT_SPECIFIED,// line stride
Format.FALSE, // flipped
Format.NOT_SPECIFIED // endian
),
//
new IndexedColorFormat(
null, // dimension
Format.NOT_SPECIFIED,// max data length
Format.byteArray,// data type
Format.NOT_SPECIFIED,// frame rate
Format.NOT_SPECIFIED, // line stride
256,// map size
null, null, null// r,g,b map
)
};
defaultOutputFormats = new VideoFormat[]{
new VideoFormat("tscc"),
//
new RGBFormat(
null, // dimension
Format.NOT_SPECIFIED, // max data length
Format.intArray, // data type
Format.NOT_SPECIFIED, // frame rate
32, // bits per pixel
rMask, gMask, bMask, // red, green, blue mask
Format.NOT_SPECIFIED, // pixel stride
Format.NOT_SPECIFIED,// line stride
Format.FALSE, // flipped
Format.NOT_SPECIFIED // endian
),
//
new IndexedColorFormat(
null, // dimension
Format.NOT_SPECIFIED,// max data length
Format.byteArray,// data type
Format.NOT_SPECIFIED,// frame rate
Format.NOT_SPECIFIED, // line stride
256,// map size
null, null, null// r,g,b map
)
};
pluginName = "TechSmith Screen-Capture Codec";
}
@Override
protected Format[] getMatchingOutputFormats(Format input) {
Format[] formats = null;
if (new VideoFormat("tscc").matches(input)) {
VideoFormat inf = (VideoFormat) input;
Dimension s = inf.getSize();
RGBFormat outf = new RGBFormat(s,
s.width < 0 || s.height < 0 ? Format.NOT_SPECIFIED : s.width * s.height,
Format.intArray, inf.getFrameRate(), 32, rMask, gMask, bMask, 1, s.width, Format.FALSE, RGBFormat.BIG_ENDIAN);
formats = new Format[]{outf};
} else if (new RGBFormat().matches(input)) {
VideoFormat inf = (VideoFormat) input;
Dimension s = inf.getSize();
VideoFormat outf = new VideoFormat("tscc", s, Format.NOT_SPECIFIED, Format.byteArray,
inf.getFrameRate());
formats = new Format[]{outf};
} else if (new IndexedColorFormat(null, // dimension
Format.NOT_SPECIFIED,// max data length
Format.byteArray,// data type
Format.NOT_SPECIFIED,// frame rate
Format.NOT_SPECIFIED, // line stride
256,// map size
null, null, null).matches(input)) {
VideoFormat inf = (VideoFormat) input;
Dimension s = inf.getSize();
VideoFormat outf = new VideoFormat("tscc", s, Format.NOT_SPECIFIED, Format.byteArray,
inf.getFrameRate());
formats = new Format[]{outf};
}
if (formats == null) {
formats = new Format[0];
}
return formats;
}
@Override
public void reset() {
previousSequenceNumber = 0;
frameCounter = 0;
state = null;
}
@Override
public int process(Buffer input, Buffer output) {
if (state == null) {
state = new TechSmithCodecCore();
}
if (outputFormat.getEncoding().equals("tscc")) {
return encode(input, output);
} else {
return decode(input, output);
}
}
/** Copies all meta-data field from in to out. */
protected void copyMetaTo(Buffer in, Buffer out) {
//out.setData(in.getData());
//out.setHeader(in.getHeader());
//out.setFormat(in.getFormat());
//out.setLength(in.getLength());
///out.setOffset(in.getOffset());
out.setTimeStamp(in.getTimeStamp());
out.setDuration(in.getDuration());
out.setSequenceNumber(in.getSequenceNumber());
out.setFlags(in.getFlags());
}
protected int encode(Buffer in, Buffer out) {
if (in.isDiscard()) {
out.setDiscard(true);
return BUFFER_PROCESSED_OK;
}
copyMetaTo(in, out);
out.setFormat(outputFormat);
SeekableByteArrayOutputStream tmp;
if (out.getData() instanceof byte[]) {
tmp = new SeekableByteArrayOutputStream((byte[]) out.getData());
} else {
tmp = new SeekableByteArrayOutputStream();
}
VideoFormat outvf = (VideoFormat) outputFormat;
boolean isKeyframe = isSet(in, Buffer.FLAG_KEY_FRAME) || frameCounter % (int) outvf.getFrameRate() == 0;
frameCounter++;
VideoFormat invf = (VideoFormat) inputFormat;
int width = invf.getSize().width;
int height = invf.getSize().height;
int scanlineStride;
int pixelStride;
int offset = in.getOffset();
int inputDepth;
if (invf instanceof RGBFormat) {
RGBFormat inrgbf = (RGBFormat) inputFormat;
inputDepth = inrgbf.getBitsPerPixel();
scanlineStride = inrgbf.getLineStride();
pixelStride = inrgbf.getPixelStride();
if (inrgbf.getFlipped() == Format.TRUE) {
offset += (height - 1) * scanlineStride;
scanlineStride = -scanlineStride;
}
} else if (invf instanceof AviVideoFormat) {
IndexedColorFormat inicvf = (IndexedColorFormat) inputFormat;
inputDepth = ((AviVideoFormat) invf).getBitsPerPixel();
scanlineStride = inicvf.getLineStride();
pixelStride = 1;
} else {
IndexedColorFormat inicvf = (IndexedColorFormat) inputFormat;
inputDepth = 8;
scanlineStride = inicvf.getLineStride();
pixelStride = 1;
state.setPalette(inicvf.getRedValues(), inicvf.getGreenValues(), inicvf.getBlueValues());
}
// FIXME - Implement pixelStride <> 1
if (pixelStride != 1) {
return BUFFER_PROCESSED_FAILED;
}
try {
switch (inputDepth) {
case 8: {
byte[] pixels = (byte[]) (in.getData());
if (pixels == null) {
setFlag(out, Buffer.FLAG_DISCARD, true);
return BUFFER_PROCESSED_FAILED;
}
if (isKeyframe) {
state.encodeKey8to24(tmp, pixels, width, height, offset, scanlineStride);
} else {
state.encodeDelta8to24(tmp, pixels, (byte[]) previousPixels, width, height, offset, scanlineStride);
}
setFlag(out, Buffer.FLAG_KEY_FRAME, isKeyframe);
if (previousPixels == null) {
previousPixels = pixels.clone();
} else {
System.arraycopy(pixels, 0, (byte[]) previousPixels, 0, pixels.length);
}
break;
}
case 16: {
short[] pixels = (short[]) (in.getData());
if (pixels == null) {
setFlag(out, Buffer.FLAG_DISCARD, true);
return BUFFER_PROCESSED_FAILED;
}
if (isKeyframe) {
state.encodeKey16(tmp, pixels, width, height, offset, scanlineStride);
} else {
state.encodeDelta16(tmp, pixels, (short[]) previousPixels, width, height, offset, scanlineStride);
}
setFlag(out, Buffer.FLAG_KEY_FRAME, isKeyframe);
if (previousPixels == null) {
previousPixels = pixels.clone();
} else {
System.arraycopy(pixels, 0, (short[]) previousPixels, 0, pixels.length);
}
break;
}
case 32:
case 24: {
int[] pixels = (int[]) (in.getData());
if (pixels == null) {
setFlag(out, Buffer.FLAG_DISCARD, true);
return BUFFER_PROCESSED_FAILED;
}
if (isKeyframe) {
state.encodeKey24(tmp, pixels, width, height, offset, scanlineStride);
} else {
state.encodeDelta24(tmp, pixels, (int[]) previousPixels, width, height, offset, scanlineStride);
}
setFlag(out, Buffer.FLAG_KEY_FRAME, isKeyframe);
if (previousPixels == null) {
previousPixels = pixels.clone();
} else {
System.arraycopy(pixels, 0, (int[]) previousPixels, 0, pixels.length);
}
break;
}
default: {
setFlag(out, Buffer.FLAG_DISCARD, true);
return BUFFER_PROCESSED_FAILED;
}
}
out.setFormat(outputFormat);
out.setData(tmp.getBuffer());
out.setOffset(0);
out.setLength((int) tmp.size());
return BUFFER_PROCESSED_OK;
} catch (IOException ex) {
ex.printStackTrace();
setFlag(out, Buffer.FLAG_DISCARD, true);
return BUFFER_PROCESSED_FAILED;
}
}
protected int decode(Buffer in, Buffer out) {
if (in.isDiscard()) {
out.setDiscard(true);
return BUFFER_PROCESSED_OK;
}
copyMetaTo(in, out);
out.setDiscard(false);
out.setFormat(outputFormat);
// The following could be done in the open() method
VideoFormat invf = (VideoFormat) inputFormat;
boolean isKeyframe;
VideoFormat ooutvf = (VideoFormat) outputFormat;
int width = invf.getSize().width;
int height = invf.getSize().height;
int scanlineStride;
int pixelStride;
int offset = in.getOffset();
int inputDepth;
if (invf instanceof RGBFormat) {
RGBFormat inrgbf = (RGBFormat) outputFormat;
inputDepth = 24;
scanlineStride = inrgbf.getLineStride();
pixelStride = inrgbf.getPixelStride();
if (inrgbf.getFlipped() == Format.TRUE) {
offset += (height - 1) * scanlineStride;
scanlineStride = -scanlineStride;
}
} else if (invf instanceof AviVideoFormat) {
AviVideoFormat inavivf = ((AviVideoFormat) invf);
inputDepth = inavivf.getBitsPerPixel();
scanlineStride = width;
pixelStride = 1;
} else if (invf instanceof VideoFormat) {
VideoFormat vf=(VideoFormat)invf;
inputDepth = 24;
scanlineStride=pixelStride=vf.getSize().width*3;
} else {
IndexedColorFormat inicvf = (IndexedColorFormat) invf;
inputDepth = 8;
scanlineStride = inicvf.getLineStride();
pixelStride = 1;
}
int outputDepth = inputDepth;
if (outputFormat instanceof RGBFormat) {
outputDepth = ((RGBFormat) outputFormat).getBitsPerPixel();
}
// Handle header
int header;
if (in.getHeader() instanceof Integer) {
header = (Integer) in.getHeader();
} else {
header = 0;
}
if (0x100 == (header & 0x100)) { // palette change
try {
state.decodePalette((byte[]) in.getData(), in.getOffset(), in.getLength());
out.setFlags(Buffer.FLAG_DISCARD);
return OUTPUT_BUFFER_NOT_FILLED;
} catch (IOException ex) {
ex.printStackTrace();
out.setDiscard(true);
return BUFFER_PROCESSED_FAILED;
}
}
if (inputDepth == 8 && outputDepth == 8) {
if (!(pixels instanceof byte[]) || ((byte[]) pixels).length < width * height) {
pixels = new byte[width * height];
}
} else if (inputDepth == 16 && outputDepth == 16) {
if (!(pixels instanceof short[]) || ((short[]) pixels).length < width * height) {
pixels = new int[width * height];
}
} else {
if (!(pixels instanceof int[]) || ((int[]) pixels).length < width * height) {
pixels = new int[width * height];
}
}
out.setData(pixels);
out.setOffset(0);
out.setLength(width * height);
byte[] inDat = (byte[]) in.getData();
// Detect if frames were skipped
long sequenceNumber = in.getSequenceNumber();
boolean framesWereSkipped = (sequenceNumber != previousSequenceNumber + 1);
try {
if (inputDepth == 8) {
if (outputDepth == 8) {
isKeyframe = state.decode8(inDat, in.getOffset(), in.getLength(), (byte[]) pixels, (byte[]) pixels, outputFormat.getSize().width, outputFormat.getSize().height,
framesWereSkipped);
} else {
isKeyframe = state.decode8(inDat, in.getOffset(), in.getLength(), (int[]) pixels, (int[]) pixels, outputFormat.getSize().width, outputFormat.getSize().height,
framesWereSkipped);
}
} else if (inputDepth == 16) {
isKeyframe = state.decode16(inDat, in.getOffset(), in.getLength(), (int[]) pixels, (int[]) pixels, outputFormat.getSize().width, outputFormat.getSize().height,
framesWereSkipped);
} else if (inputDepth == 24) {
isKeyframe = state.decode24(inDat, in.getOffset(), in.getLength(), (int[]) pixels, (int[]) pixels, outputFormat.getSize().width, outputFormat.getSize().height,
framesWereSkipped);
} else {
out.setDiscard(true);
return BUFFER_PROCESSED_FAILED;
}
} catch (IOException ex) {
ex.printStackTrace();
out.setDiscard(true);
return BUFFER_PROCESSED_FAILED;
}
if (framesWereSkipped && !isKeyframe) {
out.setDiscard(true);
} else {
previousSequenceNumber = sequenceNumber;
}
setFlag(out, Buffer.FLAG_KEY_FRAME, isKeyframe);
return BUFFER_PROCESSED_OK;
}
@Override
public void close() {
pixels = null;
state = null;
}
@Override
public void open() throws ResourceUnavailableException {
state = new TechSmithCodecCore();
/*
if (((VideoFormat) outputFormat).getDataType() == int[].class) {
pixels = new int[outputFormat.getSize().width * outputFormat.getSize().height];
previousPixels = new int[outputFormat.getSize().width * outputFormat.getSize().height];
} else {
previousPixels = new byte[outputFormat.getSize().width * outputFormat.getSize().height];
pixels = new byte[outputFormat.getSize().width * outputFormat.getSize().height];
}*/
}
}