rlm@10: /**
rlm@10:  * @(#)AVIOutputStream.java  1.5.1  2011-01-17
rlm@10:  *
rlm@68: * Copyright (c) 2008-2011 Werner Randelshofer, Immensee, Switzerland.
rlm@10:  * All rights reserved.
rlm@10:  *
rlm@10:  * You may not use, copy or modify this file, except in compliance with the
rlm@10:  * license agreement you entered into with Werner Randelshofer.
rlm@10:  * For details see accompanying license terms.
rlm@10:  */
rlm@10: package ca.randelshofer;
rlm@10: 
rlm@10: import java.awt.Dimension;
rlm@10: import java.awt.image.BufferedImage;
rlm@10: import java.awt.image.DataBufferByte;
rlm@10: import java.awt.image.IndexColorModel;
rlm@10: import java.awt.image.WritableRaster;
rlm@10: import java.io.File;
rlm@10: import java.io.FileInputStream;
rlm@10: import java.io.IOException;
rlm@10: import java.io.InputStream;
rlm@10: import java.io.OutputStream;
rlm@10: import java.util.Arrays;
rlm@10: import java.util.Date;
rlm@10: import java.util.LinkedList;
rlm@10: 
rlm@10: import javax.imageio.IIOImage;
rlm@10: import javax.imageio.ImageIO;
rlm@10: import javax.imageio.ImageWriteParam;
rlm@10: import javax.imageio.ImageWriter;
rlm@10: import javax.imageio.stream.FileImageOutputStream;
rlm@10: import javax.imageio.stream.ImageOutputStream;
rlm@10: import javax.imageio.stream.MemoryCacheImageOutputStream;
rlm@10: 
rlm@10: /**
rlm@10:  * This class supports writing of images into an AVI 1.0 video file.
rlm@10:  * <p>
rlm@10:  * The images are written as video frames.
rlm@10:  * <p>
rlm@10:  * Video frames can be encoded with one of the following formats:
rlm@10:  * <ul>
rlm@10:  * <li>JPEG</li>
rlm@10:  * <li>PNG</li>
rlm@10:  * <li>RAW</li>
rlm@10:  * <li>RLE</li>
rlm@10:  * </ul>
rlm@10:  * All frames must have the same format.
rlm@10:  * When JPG is used each frame can have an individual encoding quality.
rlm@10:  * <p>
rlm@10:  * All frames in an AVI file must have the same duration. The duration can
rlm@10:  * be set by setting an appropriate pair of values using methods
rlm@10:  * {@link #setFrameRate} and {@link #setTimeScale}.
rlm@10:  * <p>
rlm@10:  * The length of an AVI 1.0 file is limited to 1 GB.
rlm@10:  * This class supports lengths of up to 4 GB, but such files may not work on
rlm@10:  * all players.
rlm@10:  * <p>
rlm@10:  * For detailed information about the AVI RIFF file format see:<br>
rlm@10:  * <a href="http://msdn.microsoft.com/en-us/library/ms779636.aspx">msdn.microsoft.com AVI RIFF</a><br>
rlm@10:  * <a href="http://www.microsoft.com/whdc/archive/fourcc.mspx">www.microsoft.com FOURCC for Video Compression</a><br>
rlm@10:  * <a href="http://www.saettler.com/RIFFMCI/riffmci.html">www.saettler.com RIFF</a><br>
rlm@10:  *
rlm@10:  * @author Werner Randelshofer
rlm@10:  * @version 1.5.1 2011-01-17 Fixes unintended closing of output stream..
rlm@10:  * <br>1.5 2011-01-06 Adds support for RLE 8-bit video format.
rlm@10:  * <br>1.4 2011-01-04 Adds support for RAW 4-bit and 8-bit video format. Fixes offsets
rlm@10:  * in "idx1" chunk.
rlm@10:  * <br>1.3.2 2010-12-27 File size limit is 1 GB.
rlm@10:  * <br>1.3.1 2010-07-19 Fixes seeking and calculation of offsets.
rlm@10:  * <br>1.3 2010-07-08 Adds constructor with ImageOutputStream.
rlm@10:  * Added method getVideoDimension().
rlm@10:  * <br>1.2 2009-08-29 Adds support for RAW video format.
rlm@10:  * <br>1.1 2008-08-27 Fixes computation of dwMicroSecPerFrame in avih
rlm@10:  * chunk. Changed the API to reflect that AVI works with frame rates instead of
rlm@10:  * with frame durations.
rlm@10:  * <br>1.0.1 2008-08-13 Uses FourCC "MJPG" instead of "jpg " for JPG
rlm@10:  * encoded video.
rlm@10:  * <br>1.0 2008-08-11 Created.
rlm@10:  */
rlm@10: public class AVIOutputStream {
rlm@10: 
rlm@10:     /**
rlm@10:      * Underlying output stream.
rlm@10:      */
rlm@10:     private ImageOutputStream out;
rlm@10:     /** The offset of the QuickTime stream in the underlying ImageOutputStream.
rlm@10:      * Normally this is 0 unless the underlying stream already contained data
rlm@10:      * when it was passed to the constructor.
rlm@10:      */
rlm@10:     private long streamOffset;
rlm@10:     /** Previous frame for delta compression. */
rlm@10:     
rlm@10:     /**
rlm@10:      * Supported video encodings.
rlm@10:      */
rlm@10:     public static enum VideoFormat {
rlm@10: 
rlm@10:         RAW, RLE, JPG, PNG;
rlm@10:     }
rlm@10:     /**
rlm@10:      * Current video formats.
rlm@10:      */
rlm@10:     private VideoFormat videoFormat;
rlm@10:     /**
rlm@10:      * Quality of JPEG encoded video frames.
rlm@10:      */
rlm@10:     private float quality = 0.9f;
rlm@10:     /**
rlm@10:      * Width of the video frames. All frames must have the same width.
rlm@10:      * The value -1 is used to mark unspecified width.
rlm@10:      */
rlm@10:     private int imgWidth = -1;
rlm@10:     /**
rlm@10:      * Height of the video frames. All frames must have the same height.
rlm@10:      * The value -1 is used to mark unspecified height.
rlm@10:      */
rlm@10:     private int imgHeight = -1;
rlm@10:     /** Number of bits per pixel. */
rlm@10:     private int imgDepth = 24;
rlm@10:     /** Index color model for RAW_RGB4 and RAW_RGB8 formats. */
rlm@10:     private IndexColorModel palette;
rlm@10:     private IndexColorModel previousPalette;
rlm@10:     /** Video encoder. */
rlm@10:     
rlm@10:     /**
rlm@10:      * The timeScale of the movie.
rlm@10:      * <p>
rlm@10:      * Used with frameRate to specify the time scale that this stream will use.
rlm@10:      * Dividing frameRate by timeScale gives the number of samples per second.
rlm@10:      * For video streams, this is the frame rate. For audio streams, this rate
rlm@10:      * corresponds to the time needed to play nBlockAlign bytes of audio, which
rlm@10:      * for PCM audio is the just the sample rate.
rlm@10:      */
rlm@10:     private int timeScale = 1;
rlm@10:     /**
rlm@10:      * The frameRate of the movie in timeScale units.
rlm@10:      * <p>
rlm@10:      * @see timeScale
rlm@10:      */
rlm@10:     private int frameRate = 30;
rlm@10:     /**
rlm@10:      * The states of the movie output stream.
rlm@10:      */
rlm@10:     private static enum States {
rlm@10: 
rlm@10:         STARTED, FINISHED, CLOSED;
rlm@10:     }
rlm@10:     /**
rlm@10:      * The current state of the movie output stream.
rlm@10:      */
rlm@10:     private States state = States.FINISHED;
rlm@10: 
rlm@10:     /**
rlm@10:      * AVI stores media data in samples.
rlm@10:      * A sample is a single element in a sequence of time-ordered data.
rlm@10:      */
rlm@10:     private static class Sample {
rlm@10: 
rlm@10:         String chunkType;
rlm@10:         /** Offset of the sample relative to the start of the AVI file.
rlm@10:          */
rlm@10:         long offset;
rlm@10:         /** Data length of the sample. */
rlm@10:         long length;
rlm@10:         /** Whether the sample is a sync-sample. */
rlm@10:         boolean isSync;
rlm@10: 
rlm@10:         /**
rlm@10:          * Creates a new sample.
rlm@10:          * @param duration
rlm@10:          * @param offset
rlm@10:          * @param length
rlm@10:          */
rlm@10:         public Sample(String chunkId, int duration, long offset, long length, boolean isSync) {
rlm@10:             this.chunkType = chunkId;
rlm@10:             this.offset = offset;
rlm@10:             this.length = length;
rlm@10:             this.isSync = isSync;
rlm@10:         }
rlm@10:     }
rlm@10:     /**
rlm@10:      * List of video frames.
rlm@10:      */
rlm@10:     private LinkedList<Sample> videoFrames;
rlm@10:     /**
rlm@10:      * This chunk holds the whole AVI content.
rlm@10:      */
rlm@10:     private CompositeChunk aviChunk;
rlm@10:     /**
rlm@10:      * This chunk holds the movie frames.
rlm@10:      */
rlm@10:     private CompositeChunk moviChunk;
rlm@10:     /**
rlm@10:      * This chunk holds the AVI Main Header.
rlm@10:      */
rlm@10:     FixedSizeDataChunk avihChunk;
rlm@10:     /**
rlm@10:      * This chunk holds the AVI Stream Header.
rlm@10:      */
rlm@10:     FixedSizeDataChunk strhChunk;
rlm@10:     /**
rlm@10:      * This chunk holds the AVI Stream Format Header.
rlm@10:      */
rlm@10:     FixedSizeDataChunk strfChunk;
rlm@10: 
rlm@10:     /**
rlm@10:      * Chunk base class.
rlm@10:      */
rlm@10:     private abstract class Chunk {
rlm@10: 
rlm@10:         /**
rlm@10:          * The chunkType of the chunk. A String with the length of 4 characters.
rlm@10:          */
rlm@10:         protected String chunkType;
rlm@10:         /**
rlm@10:          * The offset of the chunk relative to the start of the
rlm@10:          * ImageOutputStream.
rlm@10:          */
rlm@10:         protected long offset;
rlm@10: 
rlm@10:         /**
rlm@10:          * Creates a new Chunk at the current position of the ImageOutputStream.
rlm@10:          * @param chunkType The chunkType of the chunk. A string with a length of 4 characters.
rlm@10:          */
rlm@10:         public Chunk(String chunkType) throws IOException {
rlm@10:             this.chunkType = chunkType;
rlm@10:             offset = getRelativeStreamPosition();
rlm@10:         }
rlm@10: 
rlm@10:         /**
rlm@10:          * Writes the chunk to the ImageOutputStream and disposes it.
rlm@10:          */
rlm@10:         public abstract void finish() throws IOException;
rlm@10: 
rlm@10:         /**
rlm@10:          * Returns the size of the chunk including the size of the chunk header.
rlm@10:          * @return The size of the chunk.
rlm@10:          */
rlm@10:         public abstract long size();
rlm@10:     }
rlm@10: 
rlm@10:     /**
rlm@10:      * A CompositeChunk contains an ordered list of Chunks.
rlm@10:      */
rlm@10:     private class CompositeChunk extends Chunk {
rlm@10: 
rlm@10:         /**
rlm@10:          * The type of the composite. A String with the length of 4 characters.
rlm@10:          */
rlm@10:         protected String compositeType;
rlm@10:         private LinkedList<Chunk> children;
rlm@10:         private boolean finished;
rlm@10: 
rlm@10:         /**
rlm@10:          * Creates a new CompositeChunk at the current position of the
rlm@10:          * ImageOutputStream.
rlm@10:          * @param compositeType The type of the composite.
rlm@10:          * @param chunkType The type of the chunk.
rlm@10:          */
rlm@10:         public CompositeChunk(String compositeType, String chunkType) throws IOException {
rlm@10:             super(chunkType);
rlm@10:             this.compositeType = compositeType;
rlm@10:             //out.write
rlm@10:             out.writeLong(0); // make room for the chunk header
rlm@10:             out.writeInt(0); // make room for the chunk header
rlm@10:             children = new LinkedList<Chunk>();
rlm@10:         }
rlm@10: 
rlm@10:         public void add(Chunk child) throws IOException {
rlm@10:             if (children.size() > 0) {
rlm@10:                 children.getLast().finish();
rlm@10:             }
rlm@10:             children.add(child);
rlm@10:         }
rlm@10: 
rlm@10:         /**
rlm@10:          * Writes the chunk and all its children to the ImageOutputStream
rlm@10:          * and disposes of all resources held by the chunk.
rlm@10:          * @throws java.io.IOException
rlm@10:          */
rlm@10:         @Override
rlm@10:         public void finish() throws IOException {
rlm@10:             if (!finished) {
rlm@10:                 if (size() > 0xffffffffL) {
rlm@10:                     throw new IOException("CompositeChunk \"" + chunkType + "\" is too large: " + size());
rlm@10:                 }
rlm@10: 
rlm@10:                 long pointer = getRelativeStreamPosition();
rlm@10:                 seekRelative(offset);
rlm@10: 
rlm@10:                 DataChunkOutputStream headerData = new DataChunkOutputStream(new ImageOutputStreamAdapter(out),false);
rlm@10:                 headerData.writeType(compositeType);
rlm@10:                 headerData.writeUInt(size() - 8);
rlm@10:                 headerData.writeType(chunkType);
rlm@10:                 for (Chunk child : children) {
rlm@10:                     child.finish();
rlm@10:                 }
rlm@10:                 seekRelative(pointer);
rlm@10:                 if (size() % 2 == 1) {
rlm@10:                     out.writeByte(0); // write pad byte
rlm@10:                 }
rlm@10:                 finished = true;
rlm@10:             }
rlm@10:         }
rlm@10: 
rlm@10:         @Override
rlm@10:         public long size() {
rlm@10:             long length = 12;
rlm@10:             for (Chunk child : children) {
rlm@10:                 length += child.size() + child.size() % 2;
rlm@10:             }
rlm@10:             return length;
rlm@10:         }
rlm@10:     }
rlm@10: 
rlm@10:     /**
rlm@10:      * Data Chunk.
rlm@10:      */
rlm@10:     private class DataChunk extends Chunk {
rlm@10: 
rlm@10:         private DataChunkOutputStream data;
rlm@10:         private boolean finished;
rlm@10: 
rlm@10:         /**
rlm@10:          * Creates a new DataChunk at the current position of the
rlm@10:          * ImageOutputStream.
rlm@10:          * @param chunkType The chunkType of the chunk.
rlm@10:          */
rlm@10:         public DataChunk(String name) throws IOException {
rlm@10:             super(name);
rlm@10:             out.writeLong(0); // make room for the chunk header
rlm@10:             data = new DataChunkOutputStream(new ImageOutputStreamAdapter(out), false);
rlm@10:         }
rlm@10: 
rlm@10:         public DataChunkOutputStream getOutputStream() {
rlm@10:             if (finished) {
rlm@10:                 throw new IllegalStateException("DataChunk is finished");
rlm@10:             }
rlm@10:             return data;
rlm@10:         }
rlm@10: 
rlm@10:         @Override
rlm@10:         public void finish() throws IOException {
rlm@10:             if (!finished) {
rlm@10:                 long sizeBefore = size();
rlm@10: 
rlm@10:                 if (size() > 0xffffffffL) {
rlm@10:                     throw new IOException("DataChunk \"" + chunkType + "\" is too large: " + size());
rlm@10:                 }
rlm@10: 
rlm@10:                 long pointer = getRelativeStreamPosition();
rlm@10:                 seekRelative(offset);
rlm@10: 
rlm@10:                 DataChunkOutputStream headerData = new DataChunkOutputStream(new ImageOutputStreamAdapter(out),false);
rlm@10:                 headerData.writeType(chunkType);
rlm@10:                 headerData.writeUInt(size() - 8);
rlm@10:                 seekRelative(pointer);
rlm@10:                 if (size() % 2 == 1) {
rlm@10:                     out.writeByte(0); // write pad byte
rlm@10:                 }
rlm@10:                 finished = true;
rlm@10:                 long sizeAfter = size();
rlm@10:                 if (sizeBefore != sizeAfter) {
rlm@10:                     System.err.println("size mismatch " + sizeBefore + ".." + sizeAfter);
rlm@10:                 }
rlm@10:             }
rlm@10:         }
rlm@10: 
rlm@10:         @Override
rlm@10:         public long size() {
rlm@10:             return 8 + data.size();
rlm@10:         }
rlm@10:     }
rlm@10: 
rlm@10:     /**
rlm@10:      * A DataChunk with a fixed size.
rlm@10:      */
rlm@10:     private class FixedSizeDataChunk extends Chunk {
rlm@10: 
rlm@10:         private DataChunkOutputStream data;
rlm@10:         private boolean finished;
rlm@10:         private long fixedSize;
rlm@10: 
rlm@10:         /**
rlm@10:          * Creates a new DataChunk at the current position of the
rlm@10:          * ImageOutputStream.
rlm@10:          * @param chunkType The chunkType of the chunk.
rlm@10:          */
rlm@10:         public FixedSizeDataChunk(String chunkType, long fixedSize) throws IOException {
rlm@10:             super(chunkType);
rlm@10:             this.fixedSize = fixedSize;
rlm@10:             data = new DataChunkOutputStream(new ImageOutputStreamAdapter(out),false);
rlm@10:             data.writeType(chunkType);
rlm@10:             data.writeUInt(fixedSize);
rlm@10:             data.clearCount();
rlm@10: 
rlm@10:             // Fill fixed size with nulls
rlm@10:             byte[] buf = new byte[(int) Math.min(512, fixedSize)];
rlm@10:             long written = 0;
rlm@10:             while (written < fixedSize) {
rlm@10:                 data.write(buf, 0, (int) Math.min(buf.length, fixedSize - written));
rlm@10:                 written += Math.min(buf.length, fixedSize - written);
rlm@10:             }
rlm@10:             if (fixedSize % 2 == 1) {
rlm@10:                 out.writeByte(0); // write pad byte
rlm@10:             }
rlm@10:             seekToStartOfData();
rlm@10:         }
rlm@10: 
rlm@10:         public DataChunkOutputStream getOutputStream() {
rlm@10:             /*if (finished) {
rlm@10:             throw new IllegalStateException("DataChunk is finished");
rlm@10:             }*/
rlm@10:             return data;
rlm@10:         }
rlm@10: 
rlm@10:         public void seekToStartOfData() throws IOException {
rlm@10:             seekRelative(offset + 8);
rlm@10:             data.clearCount();
rlm@10:         }
rlm@10: 
rlm@10:         public void seekToEndOfChunk() throws IOException {
rlm@10:             seekRelative(offset + 8 + fixedSize + fixedSize % 2);
rlm@10:         }
rlm@10: 
rlm@10:         @Override
rlm@10:         public void finish() throws IOException {
rlm@10:             if (!finished) {
rlm@10:                 finished = true;
rlm@10:             }
rlm@10:         }
rlm@10: 
rlm@10:         @Override
rlm@10:         public long size() {
rlm@10:             return 8 + fixedSize;
rlm@10:         }
rlm@10:     }
rlm@10: 
rlm@10:     /**
rlm@10:      * Creates a new AVI file with the specified video format and
rlm@10:      * frame rate. The video has 24 bits per pixel.
rlm@10:      *
rlm@10:      * @param file the output file
rlm@10:      * @param format Selects an encoder for the video format.
rlm@58:      * 
rlm@10:      * @exception IllegalArgumentException if videoFormat is null or if
rlm@10:      * frame rate is <= 0
rlm@10:      */
rlm@10:     public AVIOutputStream(File file, VideoFormat format) throws IOException {
rlm@10:         this(file,format,24);
rlm@10:     }
rlm@10:     /**
rlm@10:      * Creates a new AVI file with the specified video format and
rlm@10:      * frame rate.
rlm@10:      *
rlm@10:      * @param file the output file
rlm@10:      * @param format Selects an encoder for the video format.
rlm@10:      * @param bitsPerPixel the number of bits per pixel.
rlm@10:      * @exception IllegalArgumentException if videoFormat is null or if
rlm@10:      * frame rate is <= 0
rlm@10:      */
rlm@10:     public AVIOutputStream(File file, VideoFormat format, int bitsPerPixel) throws IOException {
rlm@10:         if (format == null) {
rlm@10:             throw new IllegalArgumentException("format must not be null");
rlm@10:         }
rlm@10: 
rlm@10:         if (file.exists()) {
rlm@10:             file.delete();
rlm@10:         }
rlm@10:         this.out = new FileImageOutputStream(file);
rlm@10:         this.streamOffset = 0;
rlm@10:         this.videoFormat = format;
rlm@10:         this.videoFrames = new LinkedList<Sample>();
rlm@10:         this.imgDepth = bitsPerPixel;
rlm@10:         if (imgDepth == 4) {
rlm@10:             byte[] gray = new byte[16];
rlm@10:             for (int i = 0; i < gray.length; i++) {
rlm@10:                 gray[i] = (byte) ((i << 4) | i);
rlm@10:             }
rlm@10:             palette = new IndexColorModel(4, 16, gray, gray, gray);
rlm@10:         } else if (imgDepth == 8) {
rlm@10:             byte[] gray = new byte[256];
rlm@10:             for (int i = 0; i < gray.length; i++) {
rlm@10:                 gray[i] = (byte) i;
rlm@10:             }
rlm@10:             palette = new IndexColorModel(8, 256, gray, gray, gray);
rlm@10:         }
rlm@10: 
rlm@10:     }
rlm@10: 
rlm@10:     /**
rlm@10:      * Creates a new AVI output stream with the specified video format and
rlm@10:      * framerate.
rlm@10:      *
rlm@10:      * @param out the underlying output stream
rlm@10:      * @param format Selects an encoder for the video format.
rlm@10:      * @exception IllegalArgumentException if videoFormat is null or if
rlm@10:      * framerate is <= 0
rlm@10:      */
rlm@10:     public AVIOutputStream(ImageOutputStream out, VideoFormat format) throws IOException {
rlm@10:         if (format == null) {
rlm@10:             throw new IllegalArgumentException("format must not be null");
rlm@10:         }
rlm@10:         this.out = out;
rlm@10:         this.streamOffset = out.getStreamPosition();
rlm@10:         this.videoFormat = format;
rlm@10:         this.videoFrames = new LinkedList<Sample>();
rlm@10:     }
rlm@10: 
rlm@10:     /**
rlm@10:      * Used with frameRate to specify the time scale that this stream will use.
rlm@10:      * Dividing frameRate by timeScale gives the number of samples per second.
rlm@10:      * For video streams, this is the frame rate. For audio streams, this rate
rlm@10:      * corresponds to the time needed to play nBlockAlign bytes of audio, which
rlm@10:      * for PCM audio is the just the sample rate.
rlm@10:      * <p>
rlm@10:      * The default value is 1.
rlm@10:      *
rlm@10:      * @param newValue
rlm@10:      */
rlm@10:     public void setTimeScale(int newValue) {
rlm@10:         if (newValue <= 0) {
rlm@10:             throw new IllegalArgumentException("timeScale must be greater 0");
rlm@10:         }
rlm@10:         this.timeScale = newValue;
rlm@10:     }
rlm@10: 
rlm@10:     /**
rlm@10:      * Returns the time scale of this media.
rlm@10:      *
rlm@10:      * @return time scale
rlm@10:      */
rlm@10:     public int getTimeScale() {
rlm@10:         return timeScale;
rlm@10:     }
rlm@10: 
rlm@10:     /**
rlm@10:      * Sets the rate of video frames in time scale units.
rlm@10:      * <p>
rlm@10:      * The default value is 30. Together with the default value 1 of timeScale
rlm@10:      * this results in 30 frames pers second.
rlm@10:      *
rlm@10:      * @param newValue
rlm@10:      */
rlm@10:     public void setFrameRate(int newValue) {
rlm@10:         if (newValue <= 0) {
rlm@10:             throw new IllegalArgumentException("frameDuration must be greater 0");
rlm@10:         }
rlm@10:         if (state == States.STARTED) {
rlm@10:             throw new IllegalStateException("frameDuration must be set before the first frame is written");
rlm@10:         }
rlm@10:         this.frameRate = newValue;
rlm@10:     }
rlm@10: 
rlm@10:     /**
rlm@10:      * Returns the frame rate of this media.
rlm@10:      *
rlm@10:      * @return frame rate
rlm@10:      */
rlm@10:     public int getFrameRate() {
rlm@10:         return frameRate;
rlm@10:     }
rlm@10: 
rlm@10:     /** Sets the global color palette. */
rlm@10:     public void setPalette(IndexColorModel palette) {
rlm@10:         this.palette = palette;
rlm@10:     }
rlm@10: 
rlm@10:     /**
rlm@10:      * Sets the compression quality of the video track.
rlm@10:      * A value of 0 stands for "high compression is important" a value of
rlm@10:      * 1 for "high image quality is important".
rlm@10:      * <p>
rlm@10:      * Changing this value affects frames which are subsequently written
rlm@10:      * to the AVIOutputStream. Frames which have already been written
rlm@10:      * are not changed.
rlm@10:      * <p>
rlm@10:      * This value has only effect on videos encoded with JPG format.
rlm@10:      * <p>
rlm@10:      * The default value is 0.9.
rlm@10:      *
rlm@10:      * @param newValue
rlm@10:      */
rlm@10:     public void setVideoCompressionQuality(float newValue) {
rlm@10:         this.quality = newValue;
rlm@10:     }
rlm@10: 
rlm@10:     /**
rlm@10:      * Returns the video compression quality.
rlm@10:      *
rlm@10:      * @return video compression quality
rlm@10:      */
rlm@10:     public float getVideoCompressionQuality() {
rlm@10:         return quality;
rlm@10:     }
rlm@10: 
rlm@10:     /**
rlm@10:      * Sets the dimension of the video track.
rlm@10:      * <p>
rlm@10:      * You need to explicitly set the dimension, if you add all frames from
rlm@10:      * files or input streams.
rlm@10:      * <p>
rlm@10:      * If you add frames from buffered images, then AVIOutputStream
rlm@10:      * can determine the video dimension from the image width and height.
rlm@10:      *
rlm@10:      * @param width Must be greater than 0.
rlm@10:      * @param height Must be greater than 0.
rlm@10:      */
rlm@10:     public void setVideoDimension(int width, int height) {
rlm@10:         if (width < 1 || height < 1) {
rlm@10:             throw new IllegalArgumentException("width and height must be greater zero.");
rlm@10:         }
rlm@10:         this.imgWidth = width;
rlm@10:         this.imgHeight = height;
rlm@10:     }
rlm@10: 
rlm@10:     /**
rlm@10:      * Gets the dimension of the video track.
rlm@10:      * <p>
rlm@10:      * Returns null if the dimension is not known.
rlm@10:      */
rlm@10:     public Dimension getVideoDimension() {
rlm@10:         if (imgWidth < 1 || imgHeight < 1) {
rlm@10:             return null;
rlm@10:         }
rlm@10:         return new Dimension(imgWidth, imgHeight);
rlm@10:     }
rlm@10: 
rlm@10:     /**
rlm@39:      * Sets the state of the AVIOutputStream to 'started'.
rlm@10:      * <p>
rlm@10:      * If the state is changed by this method, the prolog is
rlm@10:      * written.
rlm@10:      */
rlm@10:     private void ensureStarted() throws IOException {
rlm@10:         if (state != States.STARTED) {
rlm@10:             new Date();
rlm@10:             writeProlog();
rlm@10:             state = States.STARTED;
rlm@10:         }
rlm@10:     }
rlm@10: 
rlm@10:     /**
rlm@10:      * Writes a frame to the video track.
rlm@10:      * <p>
rlm@10:      * If the dimension of the video track has not been specified yet, it
rlm@10:      * is derived from the first buffered image added to the AVIOutputStream.
rlm@10:      *
rlm@10:      * @param image The frame image.
rlm@10:      *
rlm@10:      * @throws IllegalArgumentException if the duration is less than 1, or
rlm@10:      * if the dimension of the frame does not match the dimension of the video
rlm@10:      * track.
rlm@10:      * @throws IOException if writing the image failed.
rlm@10:      */
rlm@10:     public void writeFrame(BufferedImage image) throws IOException {
rlm@10:         ensureOpen();
rlm@10:         ensureStarted();
rlm@10: 
rlm@10:         // Get the dimensions of the first image
rlm@10:         if (imgWidth == -1) {
rlm@10:             imgWidth = image.getWidth();
rlm@10:             imgHeight = image.getHeight();
rlm@10:         } else {
rlm@10:             // The dimension of the image must match the dimension of the video track
rlm@10:             if (imgWidth != image.getWidth() || imgHeight != image.getHeight()) {
rlm@10:                 throw new IllegalArgumentException("Dimensions of image[" + videoFrames.size()
rlm@10:                         + "] (width=" + image.getWidth() + ", height=" + image.getHeight()
rlm@10:                         + ") differs from image[0] (width="
rlm@10:                         + imgWidth + ", height=" + imgHeight);
rlm@10:             }
rlm@10:         }
rlm@10: 
rlm@10:         DataChunk videoFrameChunk;
rlm@10:         long offset = getRelativeStreamPosition();
rlm@10:         boolean isSync = true;
rlm@10:         switch (videoFormat) {
rlm@10:             case RAW: {
rlm@10:                 switch (imgDepth) {
rlm@10:                     case 4: {
rlm@10:                         IndexColorModel imgPalette = (IndexColorModel) image.getColorModel();
rlm@10:                         int[] imgRGBs = new int[16];
rlm@10:                         imgPalette.getRGBs(imgRGBs);
rlm@10:                         int[] previousRGBs = new int[16];
rlm@10:                         if (previousPalette == null) {
rlm@10:                             previousPalette = palette;
rlm@10:                         }
rlm@10:                         previousPalette.getRGBs(previousRGBs);
rlm@10:                         if (!Arrays.equals(imgRGBs, previousRGBs)) {
rlm@10:                             previousPalette = imgPalette;
rlm@10:                             DataChunk paletteChangeChunk = new DataChunk("00pc");
rlm@10:                             /*
rlm@10:                             int first = imgPalette.getMapSize();
rlm@10:                             int last = -1;
rlm@10:                             for (int i = 0; i < 16; i++) {
rlm@10:                             if (previousRGBs[i] != imgRGBs[i] && i < first) {
rlm@10:                             first = i;
rlm@10:                             }
rlm@10:                             if (previousRGBs[i] != imgRGBs[i] && i > last) {
rlm@10:                             last = i;
rlm@10:                             }
rlm@10:                             }*/
rlm@10:                             int first = 0;
rlm@10:                             int last = imgPalette.getMapSize() - 1;
rlm@10:                             /*
rlm@10:                              * typedef struct {
rlm@10:                             BYTE         bFirstEntry;
rlm@10:                             BYTE         bNumEntries;
rlm@10:                             WORD         wFlags;
rlm@10:                             PALETTEENTRY peNew[];
rlm@10:                             } AVIPALCHANGE;
rlm@10:                              *
rlm@10:                              * typedef struct tagPALETTEENTRY {
rlm@10:                             BYTE peRed;
rlm@10:                             BYTE peGreen;
rlm@10:                             BYTE peBlue;
rlm@10:                             BYTE peFlags;
rlm@10:                             } PALETTEENTRY;
rlm@10:                              */
rlm@10:                             DataChunkOutputStream pOut = paletteChangeChunk.getOutputStream();
rlm@10:                             pOut.writeByte(first);//bFirstEntry
rlm@10:                             pOut.writeByte(last - first + 1);//bNumEntries
rlm@10:                             pOut.writeShort(0);//wFlags
rlm@10: 
rlm@10:                             for (int i = first; i <= last; i++) {
rlm@10:                                 pOut.writeByte((imgRGBs[i] >>> 16) & 0xff); // red
rlm@10:                                 pOut.writeByte((imgRGBs[i] >>> 8) & 0xff); // green
rlm@10:                                 pOut.writeByte(imgRGBs[i] & 0xff); // blue
rlm@10:                                 pOut.writeByte(0); // reserved*/
rlm@10:                             }
rlm@10: 
rlm@10:                             moviChunk.add(paletteChangeChunk);
rlm@10:                             paletteChangeChunk.finish();
rlm@10:                             long length = getRelativeStreamPosition() - offset;
rlm@10:                             videoFrames.add(new Sample(paletteChangeChunk.chunkType, 0, offset, length - 8, false));
rlm@10:                             offset = getRelativeStreamPosition();
rlm@10:                         }
rlm@10: 
rlm@10:                         videoFrameChunk = new DataChunk("00db");
rlm@10:                         byte[] rgb8 = ((DataBufferByte) image.getRaster().getDataBuffer()).getData();
rlm@10:                         byte[] rgb4 = new byte[imgWidth / 2];
rlm@10:                         for (int y = (imgHeight - 1) * imgWidth; y >= 0; y -= imgWidth) { // Upside down
rlm@10:                             for (int x = 0, xx = 0, n = imgWidth; x < n; x += 2, ++xx) {
rlm@10:                                 rgb4[xx] = (byte) (((rgb8[y + x] & 0xf) << 4) | (rgb8[y + x + 1] & 0xf));
rlm@10:                             }
rlm@10:                             videoFrameChunk.getOutputStream().write(rgb4);
rlm@10:                         }
rlm@10:                         break;
rlm@10:                     }
rlm@10:                     case 8: {
rlm@10:                         IndexColorModel imgPalette = (IndexColorModel) image.getColorModel();
rlm@10:                         int[] imgRGBs = new int[256];
rlm@10:                         imgPalette.getRGBs(imgRGBs);
rlm@10:                         int[] previousRGBs = new int[256];
rlm@10:                         if (previousPalette == null) {
rlm@10:                             previousPalette = palette;
rlm@10:                         }
rlm@10:                         previousPalette.getRGBs(previousRGBs);
rlm@10:                         if (!Arrays.equals(imgRGBs, previousRGBs)) {
rlm@10:                             previousPalette = imgPalette;
rlm@10:                             DataChunk paletteChangeChunk = new DataChunk("00pc");
rlm@10:                             /*
rlm@10:                             int first = imgPalette.getMapSize();
rlm@10:                             int last = -1;
rlm@10:                             for (int i = 0; i < 16; i++) {
rlm@10:                             if (previousRGBs[i] != imgRGBs[i] && i < first) {
rlm@10:                             first = i;
rlm@10:                             }
rlm@10:                             if (previousRGBs[i] != imgRGBs[i] && i > last) {
rlm@10:                             last = i;
rlm@10:                             }
rlm@10:                             }*/
rlm@10:                             int first = 0;
rlm@10:                             int last = imgPalette.getMapSize() - 1;
rlm@10:                             /*
rlm@10:                              * typedef struct {
rlm@10:                             BYTE         bFirstEntry;
rlm@10:                             BYTE         bNumEntries;
rlm@10:                             WORD         wFlags;
rlm@10:                             PALETTEENTRY peNew[];
rlm@10:                             } AVIPALCHANGE;
rlm@10:                              *
rlm@10:                              * typedef struct tagPALETTEENTRY {
rlm@10:                             BYTE peRed;
rlm@10:                             BYTE peGreen;
rlm@10:                             BYTE peBlue;
rlm@10:                             BYTE peFlags;
rlm@10:                             } PALETTEENTRY;
rlm@10:                              */
rlm@10:                             DataChunkOutputStream pOut = paletteChangeChunk.getOutputStream();
rlm@10:                             pOut.writeByte(first);//bFirstEntry
rlm@10:                             pOut.writeByte(last - first + 1);//bNumEntries
rlm@10:                             pOut.writeShort(0);//wFlags
rlm@10: 
rlm@10:                             for (int i = first; i <= last; i++) {
rlm@10:                                 pOut.writeByte((imgRGBs[i] >>> 16) & 0xff); // red
rlm@10:                                 pOut.writeByte((imgRGBs[i] >>> 8) & 0xff); // green
rlm@10:                                 pOut.writeByte(imgRGBs[i] & 0xff); // blue
rlm@10:                                 pOut.writeByte(0); // reserved*/
rlm@10:                             }
rlm@10: 
rlm@10:                             moviChunk.add(paletteChangeChunk);
rlm@10:                             paletteChangeChunk.finish();
rlm@10:                             long length = getRelativeStreamPosition() - offset;
rlm@10:                             videoFrames.add(new Sample(paletteChangeChunk.chunkType, 0, offset, length - 8, false));
rlm@10:                             offset = getRelativeStreamPosition();
rlm@10:                         }
rlm@10: 
rlm@10:                         videoFrameChunk = new DataChunk("00db");
rlm@10:                         byte[] rgb8 = ((DataBufferByte) image.getRaster().getDataBuffer()).getData();
rlm@10:                         for (int y = (imgHeight - 1) * imgWidth; y >= 0; y -= imgWidth) { // Upside down
rlm@10:                             videoFrameChunk.getOutputStream().write(rgb8, y, imgWidth);
rlm@10:                         }
rlm@10:                         break;
rlm@10:                     }
rlm@10:                     default: {
rlm@10:                         videoFrameChunk = new DataChunk("00db");
rlm@10:                         WritableRaster raster = image.getRaster();
rlm@10:                         int[] raw = new int[imgWidth * 3]; // holds a scanline of raw image data with 3 channels of 32 bit data
rlm@10:                         byte[] bytes = new byte[imgWidth * 3]; // holds a scanline of raw image data with 3 channels of 8 bit data
rlm@10:                         for (int y = imgHeight - 1; y >= 0; --y) { // Upside down
rlm@10:                             raster.getPixels(0, y, imgWidth, 1, raw);
rlm@10:                             for (int x = 0, n = imgWidth * 3; x < n; x += 3) {
rlm@10:                                 bytes[x + 2] = (byte) raw[x]; // Blue
rlm@10:                                 bytes[x + 1] = (byte) raw[x + 1]; // Green
rlm@10:                                 bytes[x] = (byte) raw[x + 2]; // Red
rlm@10:                             }
rlm@10:                             videoFrameChunk.getOutputStream().write(bytes);
rlm@10:                         }
rlm@10:                         break;
rlm@10:                     }
rlm@10:                 }
rlm@10:                 break;
rlm@10:             }
rlm@10:             
rlm@10:             case JPG: {
rlm@10:                 videoFrameChunk = new DataChunk("00dc");
rlm@10:                 ImageWriter iw = (ImageWriter) ImageIO.getImageWritersByMIMEType("image/jpeg").next();
rlm@10:                 ImageWriteParam iwParam = iw.getDefaultWriteParam();
rlm@10:                 iwParam.setCompressionMode(ImageWriteParam.MODE_EXPLICIT);
rlm@10:                 iwParam.setCompressionQuality(quality);
rlm@10:                 MemoryCacheImageOutputStream imgOut = new MemoryCacheImageOutputStream(videoFrameChunk.getOutputStream());
rlm@10:                 iw.setOutput(imgOut);
rlm@10:                 IIOImage img = new IIOImage(image, null, null);
rlm@10:                 iw.write(null, img, iwParam);
rlm@10:                 iw.dispose();
rlm@10:                 break;
rlm@10:             }
rlm@10:             case PNG:
rlm@10:             default: {
rlm@10:                 videoFrameChunk = new DataChunk("00dc");
rlm@10:                 ImageWriter iw = (ImageWriter) ImageIO.getImageWritersByMIMEType("image/png").next();
rlm@10:                 ImageWriteParam iwParam = iw.getDefaultWriteParam();
rlm@10:                 MemoryCacheImageOutputStream imgOut = new MemoryCacheImageOutputStream(videoFrameChunk.getOutputStream());
rlm@10:                 iw.setOutput(imgOut);
rlm@10:                 IIOImage img = new IIOImage(image, null, null);
rlm@10:                 iw.write(null, img, iwParam);
rlm@10:                 iw.dispose();
rlm@10:                 break;
rlm@10:             }
rlm@10:         }
rlm@10:         long length = getRelativeStreamPosition() - offset;
rlm@10:         moviChunk.add(videoFrameChunk);
rlm@10:         videoFrameChunk.finish();
rlm@10: 
rlm@10:         videoFrames.add(new Sample(videoFrameChunk.chunkType, frameRate, offset, length - 8, isSync));
rlm@10:         if (getRelativeStreamPosition() > 1L << 32) {
rlm@10:             throw new IOException("AVI file is larger than 4 GB");
rlm@10:         }
rlm@10:     }
rlm@10: 
rlm@10:     /**
rlm@10:      * Writes a frame from a file to the video track.
rlm@10:      * <p>
rlm@10:      * This method does not inspect the contents of the file.
rlm@10:      * For example, Its your responsibility to only add JPG files if you have
rlm@10:      * chosen the JPEG video format.
rlm@10:      * <p>
rlm@10:      * If you add all frames from files or from input streams, then you
rlm@10:      * have to explicitly set the dimension of the video track before you
rlm@10:      * call finish() or close().
rlm@10:      *
rlm@10:      * @param file The file which holds the image data.
rlm@10:      *
rlm@10:      * @throws IllegalStateException if the duration is less than 1.
rlm@10:      * @throws IOException if writing the image failed.
rlm@10:      */
rlm@10:     public void writeFrame(File file) throws IOException {
rlm@10:         FileInputStream in = null;
rlm@10:         try {
rlm@10:             in = new FileInputStream(file);
rlm@10:             writeFrame(in);
rlm@10:         } finally {
rlm@10:             if (in != null) {
rlm@10:                 in.close();
rlm@10:             }
rlm@10:         }
rlm@10:     }
rlm@10: 
rlm@10:     /**
rlm@10:      * Writes a frame to the video track.
rlm@10:      * <p>
rlm@10:      * This method does not inspect the contents of the file.
rlm@10:      * For example, its your responsibility to only add JPG files if you have
rlm@10:      * chosen the JPEG video format.
rlm@10:      * <p>
rlm@10:      * If you add all frames from files or from input streams, then you
rlm@10:      * have to explicitly set the dimension of the video track before you
rlm@10:      * call finish() or close().
rlm@10:      *
rlm@10:      * @param in The input stream which holds the image data.
rlm@10:      *
rlm@10:      * @throws IllegalArgumentException if the duration is less than 1.
rlm@10:      * @throws IOException if writing the image failed.
rlm@10:      */
rlm@10:     public void writeFrame(InputStream in) throws IOException {
rlm@10:         ensureOpen();
rlm@10:         ensureStarted();
rlm@10: 
rlm@10:         DataChunk videoFrameChunk = new DataChunk(
rlm@10:                 videoFormat == VideoFormat.RAW ? "00db" : "00dc");
rlm@10:         moviChunk.add(videoFrameChunk);
rlm@10:         OutputStream mdatOut = videoFrameChunk.getOutputStream();
rlm@10:         long offset = getRelativeStreamPosition();
rlm@10:         byte[] buf = new byte[512];
rlm@10:         int len;
rlm@10:         while ((len = in.read(buf)) != -1) {
rlm@10:             mdatOut.write(buf, 0, len);
rlm@10:         }
rlm@10:         long length = getRelativeStreamPosition() - offset;
rlm@10:         videoFrameChunk.finish();
rlm@10:         videoFrames.add(new Sample(videoFrameChunk.chunkType, frameRate, offset, length - 8, true));
rlm@10:         if (getRelativeStreamPosition() > 1L << 32) {
rlm@10:             throw new IOException("AVI file is larger than 4 GB");
rlm@10:         }
rlm@10:     }
rlm@10: 
rlm@10:     /**
rlm@10:      * Closes the movie file as well as the stream being filtered.
rlm@10:      *
rlm@10:      * @exception IOException if an I/O error has occurred
rlm@10:      */
rlm@10:     public void close() throws IOException {
rlm@10:         if (state == States.STARTED) {
rlm@10:             finish();
rlm@10:         }
rlm@10:         if (state != States.CLOSED) {
rlm@10:             out.close();
rlm@10:             state = States.CLOSED;
rlm@10:         }
rlm@10:     }
rlm@10: 
rlm@10:     /**
rlm@10:      * Finishes writing the contents of the AVI output stream without closing
rlm@10:      * the underlying stream. Use this method when applying multiple filters
rlm@10:      * in succession to the same output stream.
rlm@10:      *
rlm@10:      * @exception IllegalStateException if the dimension of the video track
rlm@10:      * has not been specified or determined yet.
rlm@10:      * @exception IOException if an I/O exception has occurred
rlm@10:      */
rlm@10:     public void finish() throws IOException {
rlm@10:         ensureOpen();
rlm@10:         if (state != States.FINISHED) {
rlm@10:             if (imgWidth == -1 || imgHeight == -1) {
rlm@10:                 throw new IllegalStateException("image width and height must be specified");
rlm@10:             }
rlm@10: 
rlm@10:             moviChunk.finish();
rlm@10:             writeEpilog();
rlm@10:             state = States.FINISHED;
rlm@10:             imgWidth = imgHeight = -1;
rlm@10:         }
rlm@10:     }
rlm@10: 
rlm@10:     /**
rlm@10:      * Check to make sure that this stream has not been closed
rlm@10:      */
rlm@10:     private void ensureOpen() throws IOException {
rlm@10:         if (state == States.CLOSED) {
rlm@10:             throw new IOException("Stream closed");
rlm@10:         }
rlm@10:     }
rlm@10: 
rlm@10:     /** Gets the position relative to the beginning of the QuickTime stream.
rlm@10:      * <p>
rlm@10:      * Usually this value is equal to the stream position of the underlying
rlm@10:      * ImageOutputStream, but can be larger if the underlying stream already
rlm@10:      * contained data.
rlm@10:      *
rlm@10:      * @return The relative stream position.
rlm@10:      * @throws IOException
rlm@10:      */
rlm@10:     private long getRelativeStreamPosition() throws IOException {
rlm@10:         return out.getStreamPosition() - streamOffset;
rlm@10:     }
rlm@10: 
rlm@10:     /** Seeks relative to the beginning of the QuickTime stream.
rlm@10:      * <p>
rlm@10:      * Usually this equal to seeking in the underlying ImageOutputStream, but
rlm@10:      * can be different if the underlying stream already contained data.
rlm@10:      *
rlm@10:      */
rlm@10:     private void seekRelative(long newPosition) throws IOException {
rlm@10:         out.seek(newPosition + streamOffset);
rlm@10:     }
rlm@10: 
rlm@10:     private void writeProlog() throws IOException {
rlm@10:         // The file has the following structure:
rlm@10:         //
rlm@10:         // .RIFF AVI
rlm@10:         // ..avih (AVI Header Chunk)
rlm@10:         // ..LIST strl
rlm@10:         // ...strh (Stream Header Chunk)
rlm@10:         // ...strf (Stream Format Chunk)
rlm@10:         // ..LIST movi
rlm@10:         // ...00dc (Compressed video data chunk in Track 00, repeated for each frame)
rlm@10:         // ..idx1 (List of video data chunks and their location in the file)
rlm@10: 
rlm@10:         // The RIFF AVI Chunk holds the complete movie
rlm@10:         aviChunk = new CompositeChunk("RIFF", "AVI ");
rlm@10:         CompositeChunk hdrlChunk = new CompositeChunk("LIST", "hdrl");
rlm@10: 
rlm@10:         // Write empty AVI Main Header Chunk - we fill the data in later
rlm@10:         aviChunk.add(hdrlChunk);
rlm@10:         avihChunk = new FixedSizeDataChunk("avih", 56);
rlm@10:         avihChunk.seekToEndOfChunk();
rlm@10:         hdrlChunk.add(avihChunk);
rlm@10: 
rlm@10:         CompositeChunk strlChunk = new CompositeChunk("LIST", "strl");
rlm@10:         hdrlChunk.add(strlChunk);
rlm@10: 
rlm@10:         // Write empty AVI Stream Header Chunk - we fill the data in later
rlm@10:         strhChunk = new FixedSizeDataChunk("strh", 56);
rlm@10:         strhChunk.seekToEndOfChunk();
rlm@10:         strlChunk.add(strhChunk);
rlm@10:         strfChunk = new FixedSizeDataChunk("strf", palette == null ? 40 : 40 + palette.getMapSize() * 4);
rlm@10:         strfChunk.seekToEndOfChunk();
rlm@10:         strlChunk.add(strfChunk);
rlm@10: 
rlm@10:         moviChunk = new CompositeChunk("LIST", "movi");
rlm@10:         aviChunk.add(moviChunk);
rlm@10: 
rlm@10: 
rlm@10:     }
rlm@10: 
rlm@10:     private void writeEpilog() throws IOException {
rlm@10:        
rlm@10:         long bufferSize = 0;
rlm@10:         for (Sample s : videoFrames) {
rlm@10:             if (s.length > bufferSize) {
rlm@10:                 bufferSize = s.length;
rlm@10:             }
rlm@10:         }
rlm@10: 
rlm@10: 
rlm@10:         DataChunkOutputStream d;
rlm@10: 
rlm@10:         /* Create Idx1 Chunk and write data
rlm@10:          * -------------
rlm@10:         typedef struct _avioldindex {
rlm@10:         FOURCC  fcc;
rlm@10:         DWORD   cb;
rlm@10:         struct _avioldindex_entry {
rlm@10:         DWORD   dwChunkId;
rlm@10:         DWORD   dwFlags;
rlm@10:         DWORD   dwOffset;
rlm@10:         DWORD   dwSize;
rlm@10:         } aIndex[];
rlm@10:         } AVIOLDINDEX;
rlm@10:          */
rlm@10:         DataChunk idx1Chunk = new DataChunk("idx1");
rlm@10:         aviChunk.add(idx1Chunk);
rlm@10:         d = idx1Chunk.getOutputStream();
rlm@10:         long moviListOffset = moviChunk.offset + 8;
rlm@10:         //moviListOffset = 0;
rlm@10:         for (Sample f : videoFrames) {
rlm@10: 
rlm@10:             d.writeType(f.chunkType); // dwChunkId
rlm@10:             // Specifies a FOURCC that identifies a stream in the AVI file. The
rlm@10:             // FOURCC must have the form 'xxyy' where xx is the stream number and yy
rlm@10:             // is a two-character code that identifies the contents of the stream:
rlm@10:             //
rlm@10:             // Two-character code   Description
rlm@10:             //  db                  Uncompressed video frame
rlm@10:             //  dc                  Compressed video frame
rlm@10:             //  pc                  Palette change
rlm@10:             //  wb                  Audio data
rlm@10: 
rlm@10:             d.writeUInt((f.chunkType.endsWith("pc") ? 0x100 : 0x0)//
rlm@10:                     | (f.isSync ? 0x10 : 0x0)); // dwFlags
rlm@10:             // Specifies a bitwise combination of zero or more of the following
rlm@10:             // flags:
rlm@10:             //
rlm@10:             // Value    Name            Description
rlm@10:             // 0x10     AVIIF_KEYFRAME  The data chunk is a key frame.
rlm@10:             // 0x1      AVIIF_LIST      The data chunk is a 'rec ' list.
rlm@10:             // 0x100    AVIIF_NO_TIME   The data chunk does not affect the timing of the
rlm@10:             //                          stream. For example, this flag should be set for
rlm@10:             //                          palette changes.
rlm@10: 
rlm@10:             d.writeUInt(f.offset - moviListOffset); // dwOffset
rlm@10:             // Specifies the location of the data chunk in the file. The value
rlm@10:             // should be specified as an offset, in bytes, from the start of the
rlm@10:             // 'movi' list; however, in some AVI files it is given as an offset from
rlm@10:             // the start of the file.
rlm@10: 
rlm@10:             d.writeUInt(f.length); // dwSize
rlm@10:             // Specifies the size of the data chunk, in bytes.
rlm@10:         }
rlm@10:         idx1Chunk.finish();
rlm@10: 
rlm@10:         /* Write Data into AVI Main Header Chunk
rlm@10:          * -------------
rlm@10:          * The AVIMAINHEADER structure defines global information in an AVI file.
rlm@10:          * see http://msdn.microsoft.com/en-us/library/ms779632(VS.85).aspx
rlm@10:         typedef struct _avimainheader {
rlm@10:         FOURCC fcc;
rlm@10:         DWORD  cb;
rlm@10:         DWORD  dwMicroSecPerFrame;
rlm@10:         DWORD  dwMaxBytesPerSec;
rlm@10:         DWORD  dwPaddingGranularity;
rlm@10:         DWORD  dwFlags;
rlm@10:         DWORD  dwTotalFrames;
rlm@10:         DWORD  dwInitialFrames;
rlm@10:         DWORD  dwStreams;
rlm@10:         DWORD  dwSuggestedBufferSize;
rlm@10:         DWORD  dwWidth;
rlm@10:         DWORD  dwHeight;
rlm@10:         DWORD  dwReserved[4];
rlm@10:         } AVIMAINHEADER; */
rlm@10:         avihChunk.seekToStartOfData();
rlm@10:         d = avihChunk.getOutputStream();
rlm@10: 
rlm@10:         d.writeUInt((1000000L * (long) timeScale) / (long) frameRate); // dwMicroSecPerFrame
rlm@10:         // Specifies the number of microseconds between frames.
rlm@10:         // This value indicates the overall timing for the file.
rlm@10: 
rlm@10:         d.writeUInt(0); // dwMaxBytesPerSec
rlm@10:         // Specifies the approximate maximum data rate of the file.
rlm@10:         // This value indicates the number of bytes per second the system
rlm@10:         // must handle to present an AVI sequence as specified by the other
rlm@10:         // parameters contained in the main header and stream header chunks.
rlm@10: 
rlm@10:         d.writeUInt(0); // dwPaddingGranularity
rlm@10:         // Specifies the alignment for data, in bytes. Pad the data to multiples
rlm@10:         // of this value.
rlm@10: 
rlm@10:         d.writeUInt(0x10); // dwFlags (0x10 == hasIndex)
rlm@10:         // Contains a bitwise combination of zero or more of the following
rlm@10:         // flags:
rlm@10:         //
rlm@10:         // Value   Name         Description
rlm@10:         // 0x10    AVIF_HASINDEX Indicates the AVI file has an index.
rlm@10:         // 0x20    AVIF_MUSTUSEINDEX Indicates that application should use the
rlm@10:         //                      index, rather than the physical ordering of the
rlm@10:         //                      chunks in the file, to determine the order of
rlm@10:         //                      presentation of the data. For example, this flag
rlm@10:         //                      could be used to create a list of frames for
rlm@10:         //                      editing.
rlm@10:         // 0x100   AVIF_ISINTERLEAVED Indicates the AVI file is interleaved.
rlm@10:         // 0x1000  AVIF_WASCAPTUREFILE Indicates the AVI file is a specially
rlm@10:         //                      allocated file used for capturing real-time
rlm@10:         //                      video. Applications should warn the user before
rlm@10:         //                      writing over a file with this flag set because
rlm@10:         //                      the user probably defragmented this file.
rlm@10:         // 0x20000 AVIF_COPYRIGHTED Indicates the AVI file contains copyrighted
rlm@10:         //                      data and software. When this flag is used,
rlm@10:         //                      software should not permit the data to be
rlm@10:         //                      duplicated.
rlm@10: 
rlm@10:         d.writeUInt(videoFrames.size()); // dwTotalFrames
rlm@10:         // Specifies the total number of frames of data in the file.
rlm@10: 
rlm@10:         d.writeUInt(0); // dwInitialFrames
rlm@10:         // Specifies the initial frame for interleaved files. Noninterleaved
rlm@10:         // files should specify zero. If you are creating interleaved files,
rlm@10:         // specify the number of frames in the file prior to the initial frame
rlm@10:         // of the AVI sequence in this member.
rlm@10:         // To give the audio driver enough audio to work with, the audio data in
rlm@10:         // an interleaved file must be skewed from the video data. Typically,
rlm@10:         // the audio data should be moved forward enough frames to allow
rlm@10:         // approximately 0.75 seconds of audio data to be preloaded. The
rlm@10:         // dwInitialRecords member should be set to the number of frames the
rlm@10:         // audio is skewed. Also set the same value for the dwInitialFrames
rlm@10:         // member of the AVISTREAMHEADER structure in the audio stream header
rlm@10: 
rlm@10:         d.writeUInt(1); // dwStreams
rlm@10:         // Specifies the number of streams in the file. For example, a file with
rlm@10:         // audio and video has two streams.
rlm@10: 
rlm@10:         d.writeUInt(bufferSize); // dwSuggestedBufferSize
rlm@10:         // Specifies the suggested buffer size for reading the file. Generally,
rlm@10:         // this size should be large enough to contain the largest chunk in the
rlm@10:         // file. If set to zero, or if it is too small, the playback software
rlm@10:         // will have to reallocate memory during playback, which will reduce
rlm@10:         // performance. For an interleaved file, the buffer size should be large
rlm@10:         // enough to read an entire record, and not just a chunk.
rlm@10: 
rlm@10: 
rlm@10:         d.writeUInt(imgWidth); // dwWidth
rlm@10:         // Specifies the width of the AVI file in pixels.
rlm@10: 
rlm@10:         d.writeUInt(imgHeight); // dwHeight
rlm@10:         // Specifies the height of the AVI file in pixels.
rlm@10: 
rlm@10:         d.writeUInt(0); // dwReserved[0]
rlm@10:         d.writeUInt(0); // dwReserved[1]
rlm@10:         d.writeUInt(0); // dwReserved[2]
rlm@10:         d.writeUInt(0); // dwReserved[3]
rlm@10:         // Reserved. Set this array to zero.
rlm@10: 
rlm@10:         /* Write Data into AVI Stream Header Chunk
rlm@10:          * -------------
rlm@10:          * The AVISTREAMHEADER structure contains information about one stream
rlm@10:          * in an AVI file.
rlm@10:          * see http://msdn.microsoft.com/en-us/library/ms779638(VS.85).aspx
rlm@10:         typedef struct _avistreamheader {
rlm@10:         FOURCC fcc;
rlm@10:         DWORD  cb;
rlm@10:         FOURCC fccType;
rlm@10:         FOURCC fccHandler;
rlm@10:         DWORD  dwFlags;
rlm@10:         WORD   wPriority;
rlm@10:         WORD   wLanguage;
rlm@10:         DWORD  dwInitialFrames;
rlm@10:         DWORD  dwScale;
rlm@10:         DWORD  dwRate;
rlm@10:         DWORD  dwStart;
rlm@10:         DWORD  dwLength;
rlm@10:         DWORD  dwSuggestedBufferSize;
rlm@10:         DWORD  dwQuality;
rlm@10:         DWORD  dwSampleSize;
rlm@10:         struct {
rlm@10:         short int left;
rlm@10:         short int top;
rlm@10:         short int right;
rlm@10:         short int bottom;
rlm@10:         }  rcFrame;
rlm@10:         } AVISTREAMHEADER;
rlm@10:          */
rlm@10:         strhChunk.seekToStartOfData();
rlm@10:         d = strhChunk.getOutputStream();
rlm@10:         d.writeType("vids"); // fccType - vids for video stream
rlm@10:         // Contains a FOURCC that specifies the type of the data contained in
rlm@10:         // the stream. The following standard AVI values for video and audio are
rlm@10:         // defined:
rlm@10:         //
rlm@10:         // FOURCC   Description
rlm@10:         // 'auds'   Audio stream
rlm@10:         // 'mids'   MIDI stream
rlm@10:         // 'txts'   Text stream
rlm@10:         // 'vids'   Video stream
rlm@10: 
rlm@10:         switch (videoFormat) {
rlm@10:             case RAW:
rlm@10:                 d.writeType("DIB "); // fccHandler - DIB for Raw RGB
rlm@10:                 break;
rlm@10:             case RLE:
rlm@10:                 d.writeType("RLE "); // fccHandler - Microsoft RLE
rlm@10:                 break;
rlm@10:             case JPG:
rlm@10:                 d.writeType("MJPG"); // fccHandler - MJPG for Motion JPEG
rlm@10:                 break;
rlm@10:             case PNG:
rlm@10:             default:
rlm@10:                 d.writeType("png "); // fccHandler - png for PNG
rlm@10:                 break;
rlm@10:         }
rlm@10:         // Optionally, contains a FOURCC that identifies a specific data
rlm@10:         // handler. The data handler is the preferred handler for the stream.
rlm@10:         // For audio and video streams, this specifies the codec for decoding
rlm@10:         // the stream.
rlm@10: 
rlm@10:         if (imgDepth <= 8) {
rlm@10:             d.writeUInt(0x00010000); // dwFlags - AVISF_VIDEO_PALCHANGES
rlm@10:         } else {
rlm@10:             d.writeUInt(0); // dwFlags
rlm@10:         }
rlm@10: 
rlm@10:         // Contains any flags for the data stream. The bits in the high-order
rlm@10:         // word of these flags are specific to the type of data contained in the
rlm@10:         // stream. The following standard flags are defined:
rlm@10:         //
rlm@10:         // Value    Name        Description
rlm@10:         //          AVISF_DISABLED 0x00000001 Indicates this stream should not
rlm@10:         //                      be enabled by default.
rlm@10:         //          AVISF_VIDEO_PALCHANGES 0x00010000
rlm@10:         //                      Indicates this video stream contains
rlm@10:         //                      palette changes. This flag warns the playback
rlm@10:         //                      software that it will need to animate the
rlm@10:         //                      palette.
rlm@10: 
rlm@10:         d.writeUShort(0); // wPriority
rlm@10:         // Specifies priority of a stream type. For example, in a file with
rlm@10:         // multiple audio streams, the one with the highest priority might be
rlm@10:         // the default stream.
rlm@10: 
rlm@10:         d.writeUShort(0); // wLanguage
rlm@10:         // Language tag.
rlm@10: 
rlm@10:         d.writeUInt(0); // dwInitialFrames
rlm@10:         // Specifies how far audio data is skewed ahead of the video frames in
rlm@10:         // interleaved files. Typically, this is about 0.75 seconds. If you are
rlm@10:         // creating interleaved files, specify the number of frames in the file
rlm@10:         // prior to the initial frame of the AVI sequence in this member. For
rlm@10:         // more information, see the remarks for the dwInitialFrames member of
rlm@10:         // the AVIMAINHEADER structure.
rlm@10: 
rlm@10:         d.writeUInt(timeScale); // dwScale
rlm@10:         // Used with dwRate to specify the time scale that this stream will use.
rlm@10:         // Dividing dwRate by dwScale gives the number of samples per second.
rlm@10:         // For video streams, this is the frame rate. For audio streams, this
rlm@10:         // rate corresponds to the time needed to play nBlockAlign bytes of
rlm@10:         // audio, which for PCM audio is the just the sample rate.
rlm@10: 
rlm@10:         d.writeUInt(frameRate); // dwRate
rlm@10:         // See dwScale.
rlm@10: 
rlm@10:         d.writeUInt(0); // dwStart
rlm@10:         // Specifies the starting time for this stream. The units are defined by
rlm@10:         // the dwRate and dwScale members in the main file header. Usually, this
rlm@10:         // is zero, but it can specify a delay time for a stream that does not
rlm@10:         // start concurrently with the file.
rlm@10: 
rlm@10:         d.writeUInt(videoFrames.size()); // dwLength
rlm@10:         // Specifies the length of this stream. The units are defined by the
rlm@10:         // dwRate and dwScale members of the stream's header.
rlm@10: 
rlm@10:         d.writeUInt(bufferSize); // dwSuggestedBufferSize
rlm@10:         // Specifies how large a buffer should be used to read this stream.
rlm@10:         // Typically, this contains a value corresponding to the largest chunk
rlm@10:         // present in the stream. Using the correct buffer size makes playback
rlm@10:         // more efficient. Use zero if you do not know the correct buffer size.
rlm@10: 
rlm@10:         d.writeInt(-1); // dwQuality
rlm@10:         // Specifies an indicator of the quality of the data in the stream.
rlm@10:         // Quality is represented as a number between 0 and 10,000.
rlm@10:         // For compressed data, this typically represents the value of the
rlm@68:         // quality parameter passed to the compression software. If set to -1,
rlm@10:         // drivers use the default quality value.
rlm@10: 
rlm@10:         d.writeUInt(0); // dwSampleSize
rlm@10:         // Specifies the size of a single sample of data. This is set to zero
rlm@10:         // if the samples can vary in size. If this number is nonzero, then
rlm@10:         // multiple samples of data can be grouped into a single chunk within
rlm@10:         // the file. If it is zero, each sample of data (such as a video frame)
rlm@10:         // must be in a separate chunk. For video streams, this number is
rlm@10:         // typically zero, although it can be nonzero if all video frames are
rlm@10:         // the same size. For audio streams, this number should be the same as
rlm@10:         // the nBlockAlign member of the WAVEFORMATEX structure describing the
rlm@10:         // audio.
rlm@10: 
rlm@10:         d.writeUShort(0); // rcFrame.left
rlm@10:         d.writeUShort(0); // rcFrame.top
rlm@10:         d.writeUShort(imgWidth); // rcFrame.right
rlm@10:         d.writeUShort(imgHeight); // rcFrame.bottom
rlm@10:         // Specifies the destination rectangle for a text or video stream within
rlm@10:         // the movie rectangle specified by the dwWidth and dwHeight members of
rlm@10:         // the AVI main header structure. The rcFrame member is typically used
rlm@10:         // in support of multiple video streams. Set this rectangle to the
rlm@10:         // coordinates corresponding to the movie rectangle to update the whole
rlm@10:         // movie rectangle. Units for this member are pixels. The upper-left
rlm@10:         // corner of the destination rectangle is relative to the upper-left
rlm@10:         // corner of the movie rectangle.
rlm@10: 
rlm@10:         /* Write BITMAPINFOHEADR Data into AVI Stream Format Chunk
rlm@10:         /* -------------
rlm@10:          * see http://msdn.microsoft.com/en-us/library/ms779712(VS.85).aspx
rlm@10:         typedef struct tagBITMAPINFOHEADER {
rlm@10:         DWORD  biSize;
rlm@10:         LONG   biWidth;
rlm@10:         LONG   biHeight;
rlm@10:         WORD   biPlanes;
rlm@10:         WORD   biBitCount;
rlm@10:         DWORD  biCompression;
rlm@10:         DWORD  biSizeImage;
rlm@10:         LONG   biXPelsPerMeter;
rlm@10:         LONG   biYPelsPerMeter;
rlm@10:         DWORD  biClrUsed;
rlm@10:         DWORD  biClrImportant;
rlm@10:         } BITMAPINFOHEADER;
rlm@10:          */
rlm@10:         strfChunk.seekToStartOfData();
rlm@10:         d = strfChunk.getOutputStream();
rlm@10:         d.writeUInt(40); // biSize
rlm@10:         // Specifies the number of bytes required by the structure. This value
rlm@10:         // does not include the size of the color table or the size of the color
rlm@10:         // masks, if they are appended to the end of structure.
rlm@10: 
rlm@10:         d.writeInt(imgWidth); // biWidth
rlm@10:         // Specifies the width of the bitmap, in pixels.
rlm@10: 
rlm@10:         d.writeInt(imgHeight); // biHeight
rlm@10:         // Specifies the height of the bitmap, in pixels.
rlm@10:         //
rlm@10:         // For uncompressed RGB bitmaps, if biHeight is positive, the bitmap is
rlm@10:         // a bottom-up DIB with the origin at the lower left corner. If biHeight
rlm@10:         // is negative, the bitmap is a top-down DIB with the origin at the
rlm@10:         // upper left corner.
rlm@10:         // For YUV bitmaps, the bitmap is always top-down, regardless of the
rlm@10:         // sign of biHeight. Decoders should offer YUV formats with postive
rlm@10:         // biHeight, but for backward compatibility they should accept YUV
rlm@10:         // formats with either positive or negative biHeight.
rlm@10:         // For compressed formats, biHeight must be positive, regardless of
rlm@10:         // image orientation.
rlm@10: 
rlm@10:         d.writeShort(1); // biPlanes
rlm@10:         // Specifies the number of planes for the target device. This value must
rlm@10:         // be set to 1.
rlm@10: 
rlm@10:         d.writeShort(imgDepth); // biBitCount
rlm@10:         // Specifies the number of bits per pixel (bpp).  For uncompressed
rlm@10:         // formats, this value is the average number of bits per pixel. For
rlm@10:         // compressed formats, this value is the implied bit depth of the
rlm@10:         // uncompressed image, after the image has been decoded.
rlm@10: 
rlm@10:         switch (videoFormat) {
rlm@10:             case RAW:
rlm@10:             default:
rlm@10:                 d.writeInt(0); // biCompression - BI_RGB for uncompressed RGB
rlm@10:                 break;
rlm@10:             case RLE:
rlm@10:                 if (imgDepth == 8) {
rlm@10:                     d.writeInt(1); // biCompression - BI_RLE8
rlm@10:                 } else if (imgDepth == 4) {
rlm@10:                     d.writeInt(2); // biCompression - BI_RLE4
rlm@10:                 } else {
rlm@10:                     throw new UnsupportedOperationException("RLE only supports 4-bit and 8-bit images");
rlm@10:                 }
rlm@10:                 break;
rlm@10:             case JPG:
rlm@10:                 d.writeType("MJPG"); // biCompression - MJPG for Motion JPEG
rlm@10:                 break;
rlm@10:             case PNG:
rlm@10:                 d.writeType("png "); // biCompression - png for PNG
rlm@10:                 break;
rlm@10:         }
rlm@10:         // For compressed video and YUV formats, this member is a FOURCC code,
rlm@10:         // specified as a DWORD in little-endian order. For example, YUYV video
rlm@10:         // has the FOURCC 'VYUY' or 0x56595559. For more information, see FOURCC
rlm@10:         // Codes.
rlm@10:         //
rlm@10:         // For uncompressed RGB formats, the following values are possible:
rlm@10:         //
rlm@10:         // Value        Description
rlm@10:         // BI_RGB       0x00000000 Uncompressed RGB.
rlm@10:         // BI_BITFIELDS 0x00000003 Uncompressed RGB with color masks.
rlm@10:         //                         Valid for 16-bpp and 32-bpp bitmaps.
rlm@10:         //
rlm@10:         // Note that BI_JPG and BI_PNG are not valid video formats.
rlm@10:         //
rlm@10:         // For 16-bpp bitmaps, if biCompression equals BI_RGB, the format is
rlm@10:         // always RGB 555. If biCompression equals BI_BITFIELDS, the format is
rlm@10:         // either RGB 555 or RGB 565. Use the subtype GUID in the AM_MEDIA_TYPE
rlm@10:         // structure to determine the specific RGB type.
rlm@10: 
rlm@10:         switch (videoFormat) {
rlm@10:             case RAW:
rlm@10:                 d.writeInt(0); // biSizeImage
rlm@10:                 break;
rlm@10:             case RLE:
rlm@10:             case JPG:
rlm@10:             case PNG:
rlm@10:             default:
rlm@10:                 if (imgDepth == 4) {
rlm@10:                     d.writeInt(imgWidth * imgHeight / 2); // biSizeImage
rlm@10:                 } else {
rlm@10:                     int bytesPerPixel = Math.max(1, imgDepth / 8);
rlm@10:                     d.writeInt(imgWidth * imgHeight * bytesPerPixel); // biSizeImage
rlm@10:                 }
rlm@10:                 break;
rlm@10:         }
rlm@10:         // Specifies the size, in bytes, of the image. This can be set to 0 for
rlm@10:         // uncompressed RGB bitmaps.
rlm@10: 
rlm@10:         d.writeInt(0); // biXPelsPerMeter
rlm@10:         // Specifies the horizontal resolution, in pixels per meter, of the
rlm@10:         // target device for the bitmap.
rlm@10: 
rlm@10:         d.writeInt(0); // biYPelsPerMeter
rlm@10:         // Specifies the vertical resolution, in pixels per meter, of the target
rlm@10:         // device for the bitmap.
rlm@10: 
rlm@10:         d.writeInt(palette == null ? 0 : palette.getMapSize()); // biClrUsed
rlm@10:         // Specifies the number of color indices in the color table that are
rlm@10:         // actually used by the bitmap.
rlm@10: 
rlm@10:         d.writeInt(0); // biClrImportant
rlm@10:         // Specifies the number of color indices that are considered important
rlm@10:         // for displaying the bitmap. If this value is zero, all colors are
rlm@10:         // important.
rlm@10: 
rlm@10:         if (palette != null) {
rlm@10:             for (int i = 0, n = palette.getMapSize(); i < n; ++i) {
rlm@10:                 /*
rlm@10:                  * typedef struct tagRGBQUAD {
rlm@10:                 BYTE rgbBlue;
rlm@10:                 BYTE rgbGreen;
rlm@10:                 BYTE rgbRed;
rlm@10:                 BYTE rgbReserved; // This member is reserved and must be zero.
rlm@10:                 } RGBQUAD;
rlm@10:                  */
rlm@10:                 d.write(palette.getBlue(i));
rlm@10:                 d.write(palette.getGreen(i));
rlm@10:                 d.write(palette.getRed(i));
rlm@10:                 d.write(0);
rlm@10:             }
rlm@10:         }
rlm@10: 
rlm@10: 
rlm@10:         // -----------------
rlm@10:         aviChunk.finish();
rlm@10:     }
rlm@10: }