jmeCapture: src/com/aurellem/capture/AVIOutputStream.java comparison

comparison src/com/aurellem/capture/AVIOutputStream.java @ 3:a92de00f0414

migrating files

author	Robert McIntyre <rlm@mit.edu>
date	Tue, 25 Oct 2011 11:55:55 -0700
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-:59509c585530
+:a92de00f0414
+/**
+* @(#)AVIOutputStream.java  1.5.1  2011-01-17
+*
+* Copyright (c) 2008-2011 Werner Randelshofer, Immensee, 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 com.aurellem.capture;
+import java.awt.Dimension;
+import java.awt.image.BufferedImage;
+import java.awt.image.DataBufferByte;
+import java.awt.image.IndexColorModel;
+import java.awt.image.WritableRaster;
+import java.io.File;
+import java.io.FileInputStream;
+import java.io.IOException;
+import java.io.InputStream;
+import java.io.OutputStream;
+import java.util.Arrays;
+import java.util.Date;
+import java.util.LinkedList;
+import javax.imageio.IIOImage;
+import javax.imageio.ImageIO;
+import javax.imageio.ImageWriteParam;
+import javax.imageio.ImageWriter;
+import javax.imageio.stream.FileImageOutputStream;
+import javax.imageio.stream.ImageOutputStream;
+import javax.imageio.stream.MemoryCacheImageOutputStream;
+/**
+* This class supports writing of images into an AVI 1.0 video file.
+* <p>
+* The images are written as video frames.
+* <p>
+* Video frames can be encoded with one of the following formats:
+* <ul>
+* <li>JPEG</li>
+* <li>PNG</li>
+* <li>RAW</li>
+* <li>RLE</li>
+* </ul>
+* All frames must have the same format.
+* When JPG is used each frame can have an individual encoding quality.
+* <p>
+* All frames in an AVI file must have the same duration. The duration can
+* be set by setting an appropriate pair of values using methods
+* {@link #setFrameRate} and {@link #setTimeScale}.
+* <p>
+* The length of an AVI 1.0 file is limited to 1 GB.
+* This class supports lengths of up to 4 GB, but such files may not work on
+* all players.
+* <p>
+* For detailed information about the AVI RIFF file format see:<br>
+* <a href="http://msdn.microsoft.com/en-us/library/ms779636.aspx">msdn.microsoft.com AVI RIFF</a><br>
+* <a href="http://www.microsoft.com/whdc/archive/fourcc.mspx">www.microsoft.com FOURCC for Video Compression</a><br>
+* <a href="http://www.saettler.com/RIFFMCI/riffmci.html">www.saettler.com RIFF</a><br>
+*
+* @author Werner Randelshofer
+* @version 1.5.1 2011-01-17 Fixes unintended closing of output stream..
+* <br>1.5 2011-01-06 Adds support for RLE 8-bit video format.
+* <br>1.4 2011-01-04 Adds support for RAW 4-bit and 8-bit video format. Fixes offsets
+* in "idx1" chunk.
+* <br>1.3.2 2010-12-27 File size limit is 1 GB.
+* <br>1.3.1 2010-07-19 Fixes seeking and calculation of offsets.
+* <br>1.3 2010-07-08 Adds constructor with ImageOutputStream.
+* Added method getVideoDimension().
+* <br>1.2 2009-08-29 Adds support for RAW video format.
+* <br>1.1 2008-08-27 Fixes computation of dwMicroSecPerFrame in avih
+* chunk. Changed the API to reflect that AVI works with frame rates instead of
+* with frame durations.
+* <br>1.0.1 2008-08-13 Uses FourCC "MJPG" instead of "jpg " for JPG
+* encoded video.
+* <br>1.0 2008-08-11 Created.
+*/
+public class AVIOutputStream {
+/**
+* Underlying output stream.
+*/
+private ImageOutputStream out;
+/** The offset of the QuickTime stream in the underlying ImageOutputStream.
+* Normally this is 0 unless the underlying stream already contained data
+* when it was passed to the constructor.
+*/
+private long streamOffset;
+/** Previous frame for delta compression. */
+private Object previousData;
+/**
+* Supported video encodings.
+*/
+public static enum VideoFormat {
+RAW, RLE, JPG, PNG;
+}
+/**
+* Current video formats.
+*/
+private VideoFormat videoFormat;
+/**
+* Quality of JPEG encoded video frames.
+*/
+private float quality = 0.9f;
+/**
+* Creation time of the movie output stream.
+*/
+private Date creationTime;
+/**
+* Width of the video frames. All frames must have the same width.
+* The value -1 is used to mark unspecified width.
+*/
+private int imgWidth = -1;
+/**
+* Height of the video frames. All frames must have the same height.
+* The value -1 is used to mark unspecified height.
+*/
+private int imgHeight = -1;
+/** Number of bits per pixel. */
+private int imgDepth = 24;
+/** Index color model for RAW_RGB4 and RAW_RGB8 formats. */
+private IndexColorModel palette;
+private IndexColorModel previousPalette;
+/** Video encoder. */
+/**
+* The timeScale of the movie.
+* <p>
+* Used with frameRate to specify the time scale that this stream will use.
+* Dividing frameRate by timeScale gives the number of samples per second.
+* For video streams, this is the frame rate. For audio streams, this rate
+* corresponds to the time needed to play nBlockAlign bytes of audio, which
+* for PCM audio is the just the sample rate.
+*/
+private int timeScale = 1;
+/**
+* The frameRate of the movie in timeScale units.
+* <p>
+* @see timeScale
+*/
+private int frameRate = 30;
+/** Interval between keyframes. */
+private int syncInterval = 30;
+/**
+* The states of the movie output stream.
+*/
+private static enum States {
+STARTED, FINISHED, CLOSED;
+}
+/**
+* The current state of the movie output stream.
+*/
+private States state = States.FINISHED;
+/**
+* AVI stores media data in samples.
+* A sample is a single element in a sequence of time-ordered data.
+*/
+private static class Sample {
+String chunkType;
+/** Offset of the sample relative to the start of the AVI file.
+*/
+long offset;
+/** Data length of the sample. */
+long length;
+/**
+* The duration of the sample in time scale units.
+*/
+int duration;
+/** Whether the sample is a sync-sample. */
+boolean isSync;
+/**
+* Creates a new sample.
+* @param duration
+* @param offset
+* @param length
+*/
+public Sample(String chunkId, int duration, long offset, long length, boolean isSync) {
+this.chunkType = chunkId;
+this.duration = duration;
+this.offset = offset;
+this.length = length;
+this.isSync = isSync;
+}
+}
+/**
+* List of video frames.
+*/
+private LinkedList<Sample> videoFrames;
+/**
+* This chunk holds the whole AVI content.
+*/
+private CompositeChunk aviChunk;
+/**
+* This chunk holds the movie frames.
+*/
+private CompositeChunk moviChunk;
+/**
+* This chunk holds the AVI Main Header.
+*/
+FixedSizeDataChunk avihChunk;
+/**
+* This chunk holds the AVI Stream Header.
+*/
+FixedSizeDataChunk strhChunk;
+/**
+* This chunk holds the AVI Stream Format Header.
+*/
+FixedSizeDataChunk strfChunk;
+/**
+* Chunk base class.
+*/
+private abstract class Chunk {
+/**
+* The chunkType of the chunk. A String with the length of 4 characters.
+*/
+protected String chunkType;
+/**
+* The offset of the chunk relative to the start of the
+* ImageOutputStream.
+*/
+protected long offset;
+/**
+* Creates a new Chunk at the current position of the ImageOutputStream.
+* @param chunkType The chunkType of the chunk. A string with a length of 4 characters.
+*/
+public Chunk(String chunkType) throws IOException {
+this.chunkType = chunkType;
+offset = getRelativeStreamPosition();
+}
+/**
+* Writes the chunk to the ImageOutputStream and disposes it.
+*/
+public abstract void finish() throws IOException;
+/**
+* Returns the size of the chunk including the size of the chunk header.
+* @return The size of the chunk.
+*/
+public abstract long size();
+}
+/**
+* A CompositeChunk contains an ordered list of Chunks.
+*/
+private class CompositeChunk extends Chunk {
+/**
+* The type of the composite. A String with the length of 4 characters.
+*/
+protected String compositeType;
+private LinkedList<Chunk> children;
+private boolean finished;
+/**
+* Creates a new CompositeChunk at the current position of the
+* ImageOutputStream.
+* @param compositeType The type of the composite.
+* @param chunkType The type of the chunk.
+*/
+public CompositeChunk(String compositeType, String chunkType) throws IOException {
+super(chunkType);
+this.compositeType = compositeType;
+//out.write
+out.writeLong(0); // make room for the chunk header
+out.writeInt(0); // make room for the chunk header
+children = new LinkedList<Chunk>();
+}
+public void add(Chunk child) throws IOException {
+if (children.size() > 0) {
+children.getLast().finish();
+}
+children.add(child);
+}
+/**
+* Writes the chunk and all its children to the ImageOutputStream
+* and disposes of all resources held by the chunk.
+* @throws java.io.IOException
+*/
+@Override
+public void finish() throws IOException {
+if (!finished) {
+if (size() > 0xffffffffL) {
+throw new IOException("CompositeChunk \"" + chunkType + "\" is too large: " + size());
+}
+long pointer = getRelativeStreamPosition();
+seekRelative(offset);
+DataChunkOutputStream headerData = new DataChunkOutputStream(new ImageOutputStreamAdapter(out),false);
+headerData.writeType(compositeType);
+headerData.writeUInt(size() - 8);
+headerData.writeType(chunkType);
+for (Chunk child : children) {
+child.finish();
+}
+seekRelative(pointer);
+if (size() % 2 == 1) {
+out.writeByte(0); // write pad byte
+}
+finished = true;
+}
+}
+@Override
+public long size() {
+long length = 12;
+for (Chunk child : children) {
+length += child.size() + child.size() % 2;
+}
+return length;
+}
+}
+/**
+* Data Chunk.
+*/
+private class DataChunk extends Chunk {
+private DataChunkOutputStream data;
+private boolean finished;
+/**
+* Creates a new DataChunk at the current position of the
+* ImageOutputStream.
+* @param chunkType The chunkType of the chunk.
+*/
+public DataChunk(String name) throws IOException {
+super(name);
+out.writeLong(0); // make room for the chunk header
+data = new DataChunkOutputStream(new ImageOutputStreamAdapter(out), false);
+}
+public DataChunkOutputStream getOutputStream() {
+if (finished) {
+throw new IllegalStateException("DataChunk is finished");
+}
+return data;
+}
+/**
+* Returns the offset of this chunk to the beginning of the random access file
+* @return
+*/
+public long getOffset() {
+return offset;
+}
+@Override
+public void finish() throws IOException {
+if (!finished) {
+long sizeBefore = size();
+if (size() > 0xffffffffL) {
+throw new IOException("DataChunk \"" + chunkType + "\" is too large: " + size());
+}
+long pointer = getRelativeStreamPosition();
+seekRelative(offset);
+DataChunkOutputStream headerData = new DataChunkOutputStream(new ImageOutputStreamAdapter(out),false);
+headerData.writeType(chunkType);
+headerData.writeUInt(size() - 8);
+seekRelative(pointer);
+if (size() % 2 == 1) {
+out.writeByte(0); // write pad byte
+}
+finished = true;
+long sizeAfter = size();
+if (sizeBefore != sizeAfter) {
+System.err.println("size mismatch " + sizeBefore + ".." + sizeAfter);
+}
+}
+}
+@Override
+public long size() {
+return 8 + data.size();
+}
+}
+/**
+* A DataChunk with a fixed size.
+*/
+private class FixedSizeDataChunk extends Chunk {
+private DataChunkOutputStream data;
+private boolean finished;
+private long fixedSize;
+/**
+* Creates a new DataChunk at the current position of the
+* ImageOutputStream.
+* @param chunkType The chunkType of the chunk.
+*/
+public FixedSizeDataChunk(String chunkType, long fixedSize) throws IOException {
+super(chunkType);
+this.fixedSize = fixedSize;
+data = new DataChunkOutputStream(new ImageOutputStreamAdapter(out),false);
+data.writeType(chunkType);
+data.writeUInt(fixedSize);
+data.clearCount();
+// Fill fixed size with nulls
+byte[] buf = new byte[(int) Math.min(512, fixedSize)];
+long written = 0;
+while (written < fixedSize) {
+data.write(buf, 0, (int) Math.min(buf.length, fixedSize - written));
+written += Math.min(buf.length, fixedSize - written);
+}
+if (fixedSize % 2 == 1) {
+out.writeByte(0); // write pad byte
+}
+seekToStartOfData();
+}
+public DataChunkOutputStream getOutputStream() {
+/*if (finished) {
+throw new IllegalStateException("DataChunk is finished");
+}*/
+return data;
+}
+/**
+* Returns the offset of this chunk to the beginning of the random access file
+* @return
+*/
+public long getOffset() {
+return offset;
+}
+public void seekToStartOfData() throws IOException {
+seekRelative(offset + 8);
+data.clearCount();
+}
+public void seekToEndOfChunk() throws IOException {
+seekRelative(offset + 8 + fixedSize + fixedSize % 2);
+}
+@Override
+public void finish() throws IOException {
+if (!finished) {
+finished = true;
+}
+}
+@Override
+public long size() {
+return 8 + fixedSize;
+}
+}
+/**
+* Creates a new AVI file with the specified video format and
+* frame rate. The video has 24 bits per pixel.
+*
+* @param file the output file
+* @param format Selects an encoder for the video format.
+* @param bitsPerPixel the number of bits per pixel.
+* @exception IllegalArgumentException if videoFormat is null or if
+* frame rate is <= 0
+*/
+public AVIOutputStream(File file, VideoFormat format) throws IOException {
+this(file,format,24);
+}
+/**
+* Creates a new AVI file with the specified video format and
+* frame rate.
+*
+* @param file the output file
+* @param format Selects an encoder for the video format.
+* @param bitsPerPixel the number of bits per pixel.
+* @exception IllegalArgumentException if videoFormat is null or if
+* frame rate is <= 0
+*/
+public AVIOutputStream(File file, VideoFormat format, int bitsPerPixel) throws IOException {
+if (format == null) {
+throw new IllegalArgumentException("format must not be null");
+}
+if (file.exists()) {
+file.delete();
+}
+this.out = new FileImageOutputStream(file);
+this.streamOffset = 0;
+this.videoFormat = format;
+this.videoFrames = new LinkedList<Sample>();
+this.imgDepth = bitsPerPixel;
+if (imgDepth == 4) {
+byte[] gray = new byte[16];
+for (int i = 0; i < gray.length; i++) {
+gray[i] = (byte) ((i << 4) | i);
+}
+palette = new IndexColorModel(4, 16, gray, gray, gray);
+} else if (imgDepth == 8) {
+byte[] gray = new byte[256];
+for (int i = 0; i < gray.length; i++) {
+gray[i] = (byte) i;
+}
+palette = new IndexColorModel(8, 256, gray, gray, gray);
+}
+}
+/**
+* Creates a new AVI output stream with the specified video format and
+* framerate.
+*
+* @param out the underlying output stream
+* @param format Selects an encoder for the video format.
+* @exception IllegalArgumentException if videoFormat is null or if
+* framerate is <= 0
+*/
+public AVIOutputStream(ImageOutputStream out, VideoFormat format) throws IOException {
+if (format == null) {
+throw new IllegalArgumentException("format must not be null");
+}
+this.out = out;
+this.streamOffset = out.getStreamPosition();
+this.videoFormat = format;
+this.videoFrames = new LinkedList<Sample>();
+}
+/**
+* Used with frameRate to specify the time scale that this stream will use.
+* Dividing frameRate by timeScale gives the number of samples per second.
+* For video streams, this is the frame rate. For audio streams, this rate
+* corresponds to the time needed to play nBlockAlign bytes of audio, which
+* for PCM audio is the just the sample rate.
+* <p>
+* The default value is 1.
+*
+* @param newValue
+*/
+public void setTimeScale(int newValue) {
+if (newValue <= 0) {
+throw new IllegalArgumentException("timeScale must be greater 0");
+}
+this.timeScale = newValue;
+}
+/**
+* Returns the time scale of this media.
+*
+* @return time scale
+*/
+public int getTimeScale() {
+return timeScale;
+}
+/**
+* Sets the rate of video frames in time scale units.
+* <p>
+* The default value is 30. Together with the default value 1 of timeScale
+* this results in 30 frames pers second.
+*
+* @param newValue
+*/
+public void setFrameRate(int newValue) {
+if (newValue <= 0) {
+throw new IllegalArgumentException("frameDuration must be greater 0");
+}
+if (state == States.STARTED) {
+throw new IllegalStateException("frameDuration must be set before the first frame is written");
+}
+this.frameRate = newValue;
+}
+/**
+* Returns the frame rate of this media.
+*
+* @return frame rate
+*/
+public int getFrameRate() {
+return frameRate;
+}
+/** Sets the global color palette. */
+public void setPalette(IndexColorModel palette) {
+this.palette = palette;
+}
+/**
+* Sets the compression quality of the video track.
+* A value of 0 stands for "high compression is important" a value of
+* 1 for "high image quality is important".
+* <p>
+* Changing this value affects frames which are subsequently written
+* to the AVIOutputStream. Frames which have already been written
+* are not changed.
+* <p>
+* This value has only effect on videos encoded with JPG format.
+* <p>
+* The default value is 0.9.
+*
+* @param newValue
+*/
+public void setVideoCompressionQuality(float newValue) {
+this.quality = newValue;
+}
+/**
+* Returns the video compression quality.
+*
+* @return video compression quality
+*/
+public float getVideoCompressionQuality() {
+return quality;
+}
+/**
+* Sets the dimension of the video track.
+* <p>
+* You need to explicitly set the dimension, if you add all frames from
+* files or input streams.
+* <p>
+* If you add frames from buffered images, then AVIOutputStream
+* can determine the video dimension from the image width and height.
+*
+* @param width Must be greater than 0.
+* @param height Must be greater than 0.
+*/
+public void setVideoDimension(int width, int height) {
+if (width < 1 || height < 1) {
+throw new IllegalArgumentException("width and height must be greater zero.");
+}
+this.imgWidth = width;
+this.imgHeight = height;
+}
+/**
+* Gets the dimension of the video track.
+* <p>
+* Returns null if the dimension is not known.
+*/
+public Dimension getVideoDimension() {
+if (imgWidth < 1 || imgHeight < 1) {
+return null;
+}
+return new Dimension(imgWidth, imgHeight);
+}
+/**
+* Sets the state of the QuickTimeOutpuStream to started.
+* <p>
+* If the state is changed by this method, the prolog is
+* written.
+*/
+private void ensureStarted() throws IOException {
+if (state != States.STARTED) {
+creationTime = new Date();
+writeProlog();
+state = States.STARTED;
+}
+}
+/**
+* Writes a frame to the video track.
+* <p>
+* If the dimension of the video track has not been specified yet, it
+* is derived from the first buffered image added to the AVIOutputStream.
+*
+* @param image The frame image.
+*
+* @throws IllegalArgumentException if the duration is less than 1, or
+* if the dimension of the frame does not match the dimension of the video
+* track.
+* @throws IOException if writing the image failed.
+*/
+public void writeFrame(BufferedImage image) throws IOException {
+ensureOpen();
+ensureStarted();
+// Get the dimensions of the first image
+if (imgWidth == -1) {
+imgWidth = image.getWidth();
+imgHeight = image.getHeight();
+} else {
+// The dimension of the image must match the dimension of the video track
+if (imgWidth != image.getWidth() || imgHeight != image.getHeight()) {
+throw new IllegalArgumentException("Dimensions of image[" + videoFrames.size()
++ "] (width=" + image.getWidth() + ", height=" + image.getHeight()
++ ") differs from image[0] (width="
++ imgWidth + ", height=" + imgHeight);
+}
+}
+DataChunk videoFrameChunk;
+long offset = getRelativeStreamPosition();
+boolean isSync = true;
+switch (videoFormat) {
+case RAW: {
+switch (imgDepth) {
+case 4: {
+IndexColorModel imgPalette = (IndexColorModel) image.getColorModel();
+int[] imgRGBs = new int[16];
+imgPalette.getRGBs(imgRGBs);
+int[] previousRGBs = new int[16];
+if (previousPalette == null) {
+previousPalette = palette;
+}
+previousPalette.getRGBs(previousRGBs);
+if (!Arrays.equals(imgRGBs, previousRGBs)) {
+previousPalette = imgPalette;
+DataChunk paletteChangeChunk = new DataChunk("00pc");
+/*
+int first = imgPalette.getMapSize();
+int last = -1;
+for (int i = 0; i < 16; i++) {
+if (previousRGBs[i] != imgRGBs[i] && i < first) {
+first = i;
+}
+if (previousRGBs[i] != imgRGBs[i] && i > last) {
+last = i;
+}
+}*/
+int first = 0;
+int last = imgPalette.getMapSize() - 1;
+/*
+* typedef struct {
+BYTE         bFirstEntry;
+BYTE         bNumEntries;
+WORD         wFlags;
+PALETTEENTRY peNew[];
+} AVIPALCHANGE;
+*
+* typedef struct tagPALETTEENTRY {
+BYTE peRed;
+BYTE peGreen;
+BYTE peBlue;
+BYTE peFlags;
+} PALETTEENTRY;
+*/
+DataChunkOutputStream pOut = paletteChangeChunk.getOutputStream();
+pOut.writeByte(first);//bFirstEntry
+pOut.writeByte(last - first + 1);//bNumEntries
+pOut.writeShort(0);//wFlags
+for (int i = first; i <= last; i++) {
+pOut.writeByte((imgRGBs[i] >>> 16) & 0xff); // red
+pOut.writeByte((imgRGBs[i] >>> 8) & 0xff); // green
+pOut.writeByte(imgRGBs[i] & 0xff); // blue
+pOut.writeByte(0); // reserved*/
+}
+moviChunk.add(paletteChangeChunk);
+paletteChangeChunk.finish();
+long length = getRelativeStreamPosition() - offset;
+videoFrames.add(new Sample(paletteChangeChunk.chunkType, 0, offset, length - 8, false));
+offset = getRelativeStreamPosition();
+}
+videoFrameChunk = new DataChunk("00db");
+byte[] rgb8 = ((DataBufferByte) image.getRaster().getDataBuffer()).getData();
+byte[] rgb4 = new byte[imgWidth / 2];
+for (int y = (imgHeight - 1) * imgWidth; y >= 0; y -= imgWidth) { // Upside down
+for (int x = 0, xx = 0, n = imgWidth; x < n; x += 2, ++xx) {
+rgb4[xx] = (byte) (((rgb8[y + x] & 0xf) << 4) | (rgb8[y + x + 1] & 0xf));
+}
+videoFrameChunk.getOutputStream().write(rgb4);
+}
+break;
+}
+case 8: {
+IndexColorModel imgPalette = (IndexColorModel) image.getColorModel();
+int[] imgRGBs = new int[256];
+imgPalette.getRGBs(imgRGBs);
+int[] previousRGBs = new int[256];
+if (previousPalette == null) {
+previousPalette = palette;
+}
+previousPalette.getRGBs(previousRGBs);
+if (!Arrays.equals(imgRGBs, previousRGBs)) {
+previousPalette = imgPalette;
+DataChunk paletteChangeChunk = new DataChunk("00pc");
+/*
+int first = imgPalette.getMapSize();
+int last = -1;
+for (int i = 0; i < 16; i++) {
+if (previousRGBs[i] != imgRGBs[i] && i < first) {
+first = i;
+}
+if (previousRGBs[i] != imgRGBs[i] && i > last) {
+last = i;
+}
+}*/
+int first = 0;
+int last = imgPalette.getMapSize() - 1;
+/*
+* typedef struct {
+BYTE         bFirstEntry;
+BYTE         bNumEntries;
+WORD         wFlags;
+PALETTEENTRY peNew[];
+} AVIPALCHANGE;
+*
+* typedef struct tagPALETTEENTRY {
+BYTE peRed;
+BYTE peGreen;
+BYTE peBlue;
+BYTE peFlags;
+} PALETTEENTRY;
+*/
+DataChunkOutputStream pOut = paletteChangeChunk.getOutputStream();
+pOut.writeByte(first);//bFirstEntry
+pOut.writeByte(last - first + 1);//bNumEntries
+pOut.writeShort(0);//wFlags
+for (int i = first; i <= last; i++) {
+pOut.writeByte((imgRGBs[i] >>> 16) & 0xff); // red
+pOut.writeByte((imgRGBs[i] >>> 8) & 0xff); // green
+pOut.writeByte(imgRGBs[i] & 0xff); // blue
+pOut.writeByte(0); // reserved*/
+}
+moviChunk.add(paletteChangeChunk);
+paletteChangeChunk.finish();
+long length = getRelativeStreamPosition() - offset;
+videoFrames.add(new Sample(paletteChangeChunk.chunkType, 0, offset, length - 8, false));
+offset = getRelativeStreamPosition();
+}
+videoFrameChunk = new DataChunk("00db");
+byte[] rgb8 = ((DataBufferByte) image.getRaster().getDataBuffer()).getData();
+for (int y = (imgHeight - 1) * imgWidth; y >= 0; y -= imgWidth) { // Upside down
+videoFrameChunk.getOutputStream().write(rgb8, y, imgWidth);
+}
+break;
+}
+default: {
+videoFrameChunk = new DataChunk("00db");
+WritableRaster raster = image.getRaster();
+int[] raw = new int[imgWidth * 3]; // holds a scanline of raw image data with 3 channels of 32 bit data
+byte[] bytes = new byte[imgWidth * 3]; // holds a scanline of raw image data with 3 channels of 8 bit data
+for (int y = imgHeight - 1; y >= 0; --y) { // Upside down
+raster.getPixels(0, y, imgWidth, 1, raw);
+for (int x = 0, n = imgWidth * 3; x < n; x += 3) {
+bytes[x + 2] = (byte) raw[x]; // Blue
+bytes[x + 1] = (byte) raw[x + 1]; // Green
+bytes[x] = (byte) raw[x + 2]; // Red
+}
+videoFrameChunk.getOutputStream().write(bytes);
+}
+break;
+}
+}
+break;
+}
+case JPG: {
+videoFrameChunk = new DataChunk("00dc");
+ImageWriter iw = (ImageWriter) ImageIO.getImageWritersByMIMEType("image/jpeg").next();
+ImageWriteParam iwParam = iw.getDefaultWriteParam();
+iwParam.setCompressionMode(ImageWriteParam.MODE_EXPLICIT);
+iwParam.setCompressionQuality(quality);
+MemoryCacheImageOutputStream imgOut = new MemoryCacheImageOutputStream(videoFrameChunk.getOutputStream());
+iw.setOutput(imgOut);
+IIOImage img = new IIOImage(image, null, null);
+iw.write(null, img, iwParam);
+iw.dispose();
+break;
+}
+case PNG:
+default: {
+videoFrameChunk = new DataChunk("00dc");
+ImageWriter iw = (ImageWriter) ImageIO.getImageWritersByMIMEType("image/png").next();
+ImageWriteParam iwParam = iw.getDefaultWriteParam();
+MemoryCacheImageOutputStream imgOut = new MemoryCacheImageOutputStream(videoFrameChunk.getOutputStream());
+iw.setOutput(imgOut);
+IIOImage img = new IIOImage(image, null, null);
+iw.write(null, img, iwParam);
+iw.dispose();
+break;
+}
+}
+long length = getRelativeStreamPosition() - offset;
+moviChunk.add(videoFrameChunk);
+videoFrameChunk.finish();
+videoFrames.add(new Sample(videoFrameChunk.chunkType, frameRate, offset, length - 8, isSync));
+if (getRelativeStreamPosition() > 1L << 32) {
+throw new IOException("AVI file is larger than 4 GB");
+}
+}
+/**
+* Writes a frame from a file to the video track.
+* <p>
+* This method does not inspect the contents of the file.
+* For example, Its your responsibility to only add JPG files if you have
+* chosen the JPEG video format.
+* <p>
+* If you add all frames from files or from input streams, then you
+* have to explicitly set the dimension of the video track before you
+* call finish() or close().
+*
+* @param file The file which holds the image data.
+*
+* @throws IllegalStateException if the duration is less than 1.
+* @throws IOException if writing the image failed.
+*/
+public void writeFrame(File file) throws IOException {
+FileInputStream in = null;
+try {
+in = new FileInputStream(file);
+writeFrame(in);
+} finally {
+if (in != null) {
+in.close();
+}
+}
+}
+/**
+* Writes a frame to the video track.
+* <p>
+* This method does not inspect the contents of the file.
+* For example, its your responsibility to only add JPG files if you have
+* chosen the JPEG video format.
+* <p>
+* If you add all frames from files or from input streams, then you
+* have to explicitly set the dimension of the video track before you
+* call finish() or close().
+*
+* @param in The input stream which holds the image data.
+*
+* @throws IllegalArgumentException if the duration is less than 1.
+* @throws IOException if writing the image failed.
+*/
+public void writeFrame(InputStream in) throws IOException {
+ensureOpen();
+ensureStarted();
+DataChunk videoFrameChunk = new DataChunk(
+videoFormat == VideoFormat.RAW ? "00db" : "00dc");
+moviChunk.add(videoFrameChunk);
+OutputStream mdatOut = videoFrameChunk.getOutputStream();
+long offset = getRelativeStreamPosition();
+byte[] buf = new byte[512];
+int len;
+while ((len = in.read(buf)) != -1) {
+mdatOut.write(buf, 0, len);
+}
+long length = getRelativeStreamPosition() - offset;
+videoFrameChunk.finish();
+videoFrames.add(new Sample(videoFrameChunk.chunkType, frameRate, offset, length - 8, true));
+if (getRelativeStreamPosition() > 1L << 32) {
+throw new IOException("AVI file is larger than 4 GB");
+}
+}
+/**
+* Closes the movie file as well as the stream being filtered.
+*
+* @exception IOException if an I/O error has occurred
+*/
+public void close() throws IOException {
+if (state == States.STARTED) {
+finish();
+}
+if (state != States.CLOSED) {
+out.close();
+state = States.CLOSED;
+}
+}
+/**
+* Finishes writing the contents of the AVI output stream without closing
+* the underlying stream. Use this method when applying multiple filters
+* in succession to the same output stream.
+*
+* @exception IllegalStateException if the dimension of the video track
+* has not been specified or determined yet.
+* @exception IOException if an I/O exception has occurred
+*/
+public void finish() throws IOException {
+ensureOpen();
+if (state != States.FINISHED) {
+if (imgWidth == -1 || imgHeight == -1) {
+throw new IllegalStateException("image width and height must be specified");
+}
+moviChunk.finish();
+writeEpilog();
+state = States.FINISHED;
+imgWidth = imgHeight = -1;
+}
+}
+/**
+* Check to make sure that this stream has not been closed
+*/
+private void ensureOpen() throws IOException {
+if (state == States.CLOSED) {
+throw new IOException("Stream closed");
+}
+}
+/** Gets the position relative to the beginning of the QuickTime stream.
+* <p>
+* Usually this value is equal to the stream position of the underlying
+* ImageOutputStream, but can be larger if the underlying stream already
+* contained data.
+*
+* @return The relative stream position.
+* @throws IOException
+*/
+private long getRelativeStreamPosition() throws IOException {
+return out.getStreamPosition() - streamOffset;
+}
+/** Seeks relative to the beginning of the QuickTime stream.
+* <p>
+* Usually this equal to seeking in the underlying ImageOutputStream, but
+* can be different if the underlying stream already contained data.
+*
+*/
+private void seekRelative(long newPosition) throws IOException {
+out.seek(newPosition + streamOffset);
+}
+private void writeProlog() throws IOException {
+// The file has the following structure:
+//
+// .RIFF AVI
+// ..avih (AVI Header Chunk)
+// ..LIST strl
+// ...strh (Stream Header Chunk)
+// ...strf (Stream Format Chunk)
+// ..LIST movi
+// ...00dc (Compressed video data chunk in Track 00, repeated for each frame)
+// ..idx1 (List of video data chunks and their location in the file)
+// The RIFF AVI Chunk holds the complete movie
+aviChunk = new CompositeChunk("RIFF", "AVI ");
+CompositeChunk hdrlChunk = new CompositeChunk("LIST", "hdrl");
+// Write empty AVI Main Header Chunk - we fill the data in later
+aviChunk.add(hdrlChunk);
+avihChunk = new FixedSizeDataChunk("avih", 56);
+avihChunk.seekToEndOfChunk();
+hdrlChunk.add(avihChunk);
+CompositeChunk strlChunk = new CompositeChunk("LIST", "strl");
+hdrlChunk.add(strlChunk);
+// Write empty AVI Stream Header Chunk - we fill the data in later
+strhChunk = new FixedSizeDataChunk("strh", 56);
+strhChunk.seekToEndOfChunk();
+strlChunk.add(strhChunk);
+strfChunk = new FixedSizeDataChunk("strf", palette == null ? 40 : 40 + palette.getMapSize() * 4);
+strfChunk.seekToEndOfChunk();
+strlChunk.add(strfChunk);
+moviChunk = new CompositeChunk("LIST", "movi");
+aviChunk.add(moviChunk);
+}
+private void writeEpilog() throws IOException {
+// Compute values
+int duration = 0;
+for (Sample s : videoFrames) {
+duration += s.duration;
+}
+long bufferSize = 0;
+for (Sample s : videoFrames) {
+if (s.length > bufferSize) {
+bufferSize = s.length;
+}
+}
+DataChunkOutputStream d;
+/* Create Idx1 Chunk and write data
+* -------------
+typedef struct _avioldindex {
+FOURCC  fcc;
+DWORD   cb;
+struct _avioldindex_entry {
+DWORD   dwChunkId;
+DWORD   dwFlags;
+DWORD   dwOffset;
+DWORD   dwSize;
+} aIndex[];
+} AVIOLDINDEX;
+*/
+DataChunk idx1Chunk = new DataChunk("idx1");
+aviChunk.add(idx1Chunk);
+d = idx1Chunk.getOutputStream();
+long moviListOffset = moviChunk.offset + 8;
+//moviListOffset = 0;
+for (Sample f : videoFrames) {
+d.writeType(f.chunkType); // dwChunkId
+// Specifies a FOURCC that identifies a stream in the AVI file. The
+// FOURCC must have the form 'xxyy' where xx is the stream number and yy
+// is a two-character code that identifies the contents of the stream:
+//
+// Two-character code   Description
+//  db                  Uncompressed video frame
+//  dc                  Compressed video frame
+//  pc                  Palette change
+//  wb                  Audio data
+d.writeUInt((f.chunkType.endsWith("pc") ? 0x100 : 0x0)//
+| (f.isSync ? 0x10 : 0x0)); // dwFlags
+// Specifies a bitwise combination of zero or more of the following
+// flags:
+//
+// Value    Name            Description
+// 0x10     AVIIF_KEYFRAME  The data chunk is a key frame.
+// 0x1      AVIIF_LIST      The data chunk is a 'rec ' list.
+// 0x100    AVIIF_NO_TIME   The data chunk does not affect the timing of the
+//                          stream. For example, this flag should be set for
+//                          palette changes.
+d.writeUInt(f.offset - moviListOffset); // dwOffset
+// Specifies the location of the data chunk in the file. The value
+// should be specified as an offset, in bytes, from the start of the
+// 'movi' list; however, in some AVI files it is given as an offset from
+// the start of the file.
+d.writeUInt(f.length); // dwSize
+// Specifies the size of the data chunk, in bytes.
+}
+idx1Chunk.finish();
+/* Write Data into AVI Main Header Chunk
+* -------------
+* The AVIMAINHEADER structure defines global information in an AVI file.
+* see http://msdn.microsoft.com/en-us/library/ms779632(VS.85).aspx
+typedef struct _avimainheader {
+FOURCC fcc;
+DWORD  cb;
+DWORD  dwMicroSecPerFrame;
+DWORD  dwMaxBytesPerSec;
+DWORD  dwPaddingGranularity;
+DWORD  dwFlags;
+DWORD  dwTotalFrames;
+DWORD  dwInitialFrames;
+DWORD  dwStreams;
+DWORD  dwSuggestedBufferSize;
+DWORD  dwWidth;
+DWORD  dwHeight;
+DWORD  dwReserved[4];
+} AVIMAINHEADER; */
+avihChunk.seekToStartOfData();
+d = avihChunk.getOutputStream();
+d.writeUInt((1000000L * (long) timeScale) / (long) frameRate); // dwMicroSecPerFrame
+// Specifies the number of microseconds between frames.
+// This value indicates the overall timing for the file.
+d.writeUInt(0); // dwMaxBytesPerSec
+// Specifies the approximate maximum data rate of the file.
+// This value indicates the number of bytes per second the system
+// must handle to present an AVI sequence as specified by the other
+// parameters contained in the main header and stream header chunks.
+d.writeUInt(0); // dwPaddingGranularity
+// Specifies the alignment for data, in bytes. Pad the data to multiples
+// of this value.
+d.writeUInt(0x10); // dwFlags (0x10 == hasIndex)
+// Contains a bitwise combination of zero or more of the following
+// flags:
+//
+// Value   Name         Description
+// 0x10    AVIF_HASINDEX Indicates the AVI file has an index.
+// 0x20    AVIF_MUSTUSEINDEX Indicates that application should use the
+//                      index, rather than the physical ordering of the
+//                      chunks in the file, to determine the order of
+//                      presentation of the data. For example, this flag
+//                      could be used to create a list of frames for
+//                      editing.
+// 0x100   AVIF_ISINTERLEAVED Indicates the AVI file is interleaved.
+// 0x1000  AVIF_WASCAPTUREFILE Indicates the AVI file is a specially
+//                      allocated file used for capturing real-time
+//                      video. Applications should warn the user before
+//                      writing over a file with this flag set because
+//                      the user probably defragmented this file.
+// 0x20000 AVIF_COPYRIGHTED Indicates the AVI file contains copyrighted
+//                      data and software. When this flag is used,
+//                      software should not permit the data to be
+//                      duplicated.
+d.writeUInt(videoFrames.size()); // dwTotalFrames
+// Specifies the total number of frames of data in the file.
+d.writeUInt(0); // dwInitialFrames
+// Specifies the initial frame for interleaved files. Noninterleaved
+// files should specify zero. If you are creating interleaved files,
+// specify the number of frames in the file prior to the initial frame
+// of the AVI sequence in this member.
+// To give the audio driver enough audio to work with, the audio data in
+// an interleaved file must be skewed from the video data. Typically,
+// the audio data should be moved forward enough frames to allow
+// approximately 0.75 seconds of audio data to be preloaded. The
+// dwInitialRecords member should be set to the number of frames the
+// audio is skewed. Also set the same value for the dwInitialFrames
+// member of the AVISTREAMHEADER structure in the audio stream header
+d.writeUInt(1); // dwStreams
+// Specifies the number of streams in the file. For example, a file with
+// audio and video has two streams.
+d.writeUInt(bufferSize); // dwSuggestedBufferSize
+// Specifies the suggested buffer size for reading the file. Generally,
+// this size should be large enough to contain the largest chunk in the
+// file. If set to zero, or if it is too small, the playback software
+// will have to reallocate memory during playback, which will reduce
+// performance. For an interleaved file, the buffer size should be large
+// enough to read an entire record, and not just a chunk.
+d.writeUInt(imgWidth); // dwWidth
+// Specifies the width of the AVI file in pixels.
+d.writeUInt(imgHeight); // dwHeight
+// Specifies the height of the AVI file in pixels.
+d.writeUInt(0); // dwReserved[0]
+d.writeUInt(0); // dwReserved[1]
+d.writeUInt(0); // dwReserved[2]
+d.writeUInt(0); // dwReserved[3]
+// Reserved. Set this array to zero.
+/* Write Data into AVI Stream Header Chunk
+* -------------
+* The AVISTREAMHEADER structure contains information about one stream
+* in an AVI file.
+* see http://msdn.microsoft.com/en-us/library/ms779638(VS.85).aspx
+typedef struct _avistreamheader {
+FOURCC fcc;
+DWORD  cb;
+FOURCC fccType;
+FOURCC fccHandler;
+DWORD  dwFlags;
+WORD   wPriority;
+WORD   wLanguage;
+DWORD  dwInitialFrames;
+DWORD  dwScale;
+DWORD  dwRate;
+DWORD  dwStart;
+DWORD  dwLength;
+DWORD  dwSuggestedBufferSize;
+DWORD  dwQuality;
+DWORD  dwSampleSize;
+struct {
+short int left;
+short int top;
+short int right;
+short int bottom;
+}  rcFrame;
+} AVISTREAMHEADER;
+*/
+strhChunk.seekToStartOfData();
+d = strhChunk.getOutputStream();
+d.writeType("vids"); // fccType - vids for video stream
+// Contains a FOURCC that specifies the type of the data contained in
+// the stream. The following standard AVI values for video and audio are
+// defined:
+//
+// FOURCC   Description
+// 'auds'   Audio stream
+// 'mids'   MIDI stream
+// 'txts'   Text stream
+// 'vids'   Video stream
+switch (videoFormat) {
+case RAW:
+d.writeType("DIB "); // fccHandler - DIB for Raw RGB
+break;
+case RLE:
+d.writeType("RLE "); // fccHandler - Microsoft RLE
+break;
+case JPG:
+d.writeType("MJPG"); // fccHandler - MJPG for Motion JPEG
+break;
+case PNG:
+default:
+d.writeType("png "); // fccHandler - png for PNG
+break;
+}
+// Optionally, contains a FOURCC that identifies a specific data
+// handler. The data handler is the preferred handler for the stream.
+// For audio and video streams, this specifies the codec for decoding
+// the stream.
+if (imgDepth <= 8) {
+d.writeUInt(0x00010000); // dwFlags - AVISF_VIDEO_PALCHANGES
+} else {
+d.writeUInt(0); // dwFlags
+}
+// Contains any flags for the data stream. The bits in the high-order
+// word of these flags are specific to the type of data contained in the
+// stream. The following standard flags are defined:
+//
+// Value    Name        Description
+//          AVISF_DISABLED 0x00000001 Indicates this stream should not
+//                      be enabled by default.
+//          AVISF_VIDEO_PALCHANGES 0x00010000
+//                      Indicates this video stream contains
+//                      palette changes. This flag warns the playback
+//                      software that it will need to animate the
+//                      palette.
+d.writeUShort(0); // wPriority
+// Specifies priority of a stream type. For example, in a file with
+// multiple audio streams, the one with the highest priority might be
+// the default stream.
+d.writeUShort(0); // wLanguage
+// Language tag.
+d.writeUInt(0); // dwInitialFrames
+// Specifies how far audio data is skewed ahead of the video frames in
+// interleaved files. Typically, this is about 0.75 seconds. If you are
+// creating interleaved files, specify the number of frames in the file
+// prior to the initial frame of the AVI sequence in this member. For
+// more information, see the remarks for the dwInitialFrames member of
+// the AVIMAINHEADER structure.
+d.writeUInt(timeScale); // dwScale
+// Used with dwRate to specify the time scale that this stream will use.
+// Dividing dwRate by dwScale gives the number of samples per second.
+// For video streams, this is the frame rate. For audio streams, this
+// rate corresponds to the time needed to play nBlockAlign bytes of
+// audio, which for PCM audio is the just the sample rate.
+d.writeUInt(frameRate); // dwRate
+// See dwScale.
+d.writeUInt(0); // dwStart
+// Specifies the starting time for this stream. The units are defined by
+// the dwRate and dwScale members in the main file header. Usually, this
+// is zero, but it can specify a delay time for a stream that does not
+// start concurrently with the file.
+d.writeUInt(videoFrames.size()); // dwLength
+// Specifies the length of this stream. The units are defined by the
+// dwRate and dwScale members of the stream's header.
+d.writeUInt(bufferSize); // dwSuggestedBufferSize
+// Specifies how large a buffer should be used to read this stream.
+// Typically, this contains a value corresponding to the largest chunk
+// present in the stream. Using the correct buffer size makes playback
+// more efficient. Use zero if you do not know the correct buffer size.
+d.writeInt(-1); // dwQuality
+// Specifies an indicator of the quality of the data in the stream.
+// Quality is represented as a number between 0 and 10,000.
+// For compressed data, this typically represents the value of the
+// quality parameter passed to the compression software. If set to –1,
+// drivers use the default quality value.
+d.writeUInt(0); // dwSampleSize
+// Specifies the size of a single sample of data. This is set to zero
+// if the samples can vary in size. If this number is nonzero, then
+// multiple samples of data can be grouped into a single chunk within
+// the file. If it is zero, each sample of data (such as a video frame)
+// must be in a separate chunk. For video streams, this number is
+// typically zero, although it can be nonzero if all video frames are
+// the same size. For audio streams, this number should be the same as
+// the nBlockAlign member of the WAVEFORMATEX structure describing the
+// audio.
+d.writeUShort(0); // rcFrame.left
+d.writeUShort(0); // rcFrame.top
+d.writeUShort(imgWidth); // rcFrame.right
+d.writeUShort(imgHeight); // rcFrame.bottom
+// Specifies the destination rectangle for a text or video stream within
+// the movie rectangle specified by the dwWidth and dwHeight members of
+// the AVI main header structure. The rcFrame member is typically used
+// in support of multiple video streams. Set this rectangle to the
+// coordinates corresponding to the movie rectangle to update the whole
+// movie rectangle. Units for this member are pixels. The upper-left
+// corner of the destination rectangle is relative to the upper-left
+// corner of the movie rectangle.
+/* Write BITMAPINFOHEADR Data into AVI Stream Format Chunk
+/* -------------
+* see http://msdn.microsoft.com/en-us/library/ms779712(VS.85).aspx
+typedef struct tagBITMAPINFOHEADER {
+DWORD  biSize;
+LONG   biWidth;
+LONG   biHeight;
+WORD   biPlanes;
+WORD   biBitCount;
+DWORD  biCompression;
+DWORD  biSizeImage;
+LONG   biXPelsPerMeter;
+LONG   biYPelsPerMeter;
+DWORD  biClrUsed;
+DWORD  biClrImportant;
+} BITMAPINFOHEADER;
+*/
+strfChunk.seekToStartOfData();
+d = strfChunk.getOutputStream();
+d.writeUInt(40); // biSize
+// Specifies the number of bytes required by the structure. This value
+// does not include the size of the color table or the size of the color
+// masks, if they are appended to the end of structure.
+d.writeInt(imgWidth); // biWidth
+// Specifies the width of the bitmap, in pixels.
+d.writeInt(imgHeight); // biHeight
+// Specifies the height of the bitmap, in pixels.
+//
+// For uncompressed RGB bitmaps, if biHeight is positive, the bitmap is
+// a bottom-up DIB with the origin at the lower left corner. If biHeight
+// is negative, the bitmap is a top-down DIB with the origin at the
+// upper left corner.
+// For YUV bitmaps, the bitmap is always top-down, regardless of the
+// sign of biHeight. Decoders should offer YUV formats with postive
+// biHeight, but for backward compatibility they should accept YUV
+// formats with either positive or negative biHeight.
+// For compressed formats, biHeight must be positive, regardless of
+// image orientation.
+d.writeShort(1); // biPlanes
+// Specifies the number of planes for the target device. This value must
+// be set to 1.
+d.writeShort(imgDepth); // biBitCount
+// Specifies the number of bits per pixel (bpp).  For uncompressed
+// formats, this value is the average number of bits per pixel. For
+// compressed formats, this value is the implied bit depth of the
+// uncompressed image, after the image has been decoded.
+switch (videoFormat) {
+case RAW:
+default:
+d.writeInt(0); // biCompression - BI_RGB for uncompressed RGB
+break;
+case RLE:
+if (imgDepth == 8) {
+d.writeInt(1); // biCompression - BI_RLE8
+} else if (imgDepth == 4) {
+d.writeInt(2); // biCompression - BI_RLE4
+} else {
+throw new UnsupportedOperationException("RLE only supports 4-bit and 8-bit images");
+}
+break;
+case JPG:
+d.writeType("MJPG"); // biCompression - MJPG for Motion JPEG
+break;
+case PNG:
+d.writeType("png "); // biCompression - png for PNG
+break;
+}
+// For compressed video and YUV formats, this member is a FOURCC code,
+// specified as a DWORD in little-endian order. For example, YUYV video
+// has the FOURCC 'VYUY' or 0x56595559. For more information, see FOURCC
+// Codes.
+//
+// For uncompressed RGB formats, the following values are possible:
+//
+// Value        Description
+// BI_RGB       0x00000000 Uncompressed RGB.
+// BI_BITFIELDS 0x00000003 Uncompressed RGB with color masks.
+//                         Valid for 16-bpp and 32-bpp bitmaps.
+//
+// Note that BI_JPG and BI_PNG are not valid video formats.
+//
+// For 16-bpp bitmaps, if biCompression equals BI_RGB, the format is
+// always RGB 555. If biCompression equals BI_BITFIELDS, the format is
+// either RGB 555 or RGB 565. Use the subtype GUID in the AM_MEDIA_TYPE
+// structure to determine the specific RGB type.
+switch (videoFormat) {
+case RAW:
+d.writeInt(0); // biSizeImage
+break;
+case RLE:
+case JPG:
+case PNG:
+default:
+if (imgDepth == 4) {
+d.writeInt(imgWidth * imgHeight / 2); // biSizeImage
+} else {
+int bytesPerPixel = Math.max(1, imgDepth / 8);
+d.writeInt(imgWidth * imgHeight * bytesPerPixel); // biSizeImage
+}
+break;
+}
+// Specifies the size, in bytes, of the image. This can be set to 0 for
+// uncompressed RGB bitmaps.
+d.writeInt(0); // biXPelsPerMeter
+// Specifies the horizontal resolution, in pixels per meter, of the
+// target device for the bitmap.
+d.writeInt(0); // biYPelsPerMeter
+// Specifies the vertical resolution, in pixels per meter, of the target
+// device for the bitmap.
+d.writeInt(palette == null ? 0 : palette.getMapSize()); // biClrUsed
+// Specifies the number of color indices in the color table that are
+// actually used by the bitmap.
+d.writeInt(0); // biClrImportant
+// Specifies the number of color indices that are considered important
+// for displaying the bitmap. If this value is zero, all colors are
+// important.
+if (palette != null) {
+for (int i = 0, n = palette.getMapSize(); i < n; ++i) {
+/*
+* typedef struct tagRGBQUAD {
+BYTE rgbBlue;
+BYTE rgbGreen;
+BYTE rgbRed;
+BYTE rgbReserved; // This member is reserved and must be zero.
+} RGBQUAD;
+*/
+d.write(palette.getBlue(i));
+d.write(palette.getGreen(i));
+d.write(palette.getRed(i));
+d.write(0);
+}
+}
+// -----------------
+aviChunk.finish();
+}
+}

Mercurial > jmeCapture

comparison src/com/aurellem/capture/AVIOutputStream.java @ 3:a92de00f0414