public void open(VirtualInputFile input) {
close();
this.input = input;
container = IContainer.make();
format = IContainerFormat.make();
packet = IPacket.make();
// open the input video file
int success = container.open(input, format, true, true);
/* int success = -1;
try {
RandomAccessFile f = new RandomAccessFile("j:/grey.avi", "r");
success = container.open(f, Type.READ, format);
} catch (FileNotFoundException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
*/
if (success < 0) {
throw new RuntimeException(
"XUGGLER DECODER: could not open input: " + input.getLocation().getDecodedURL());
}
for (int streamIndex = 0; streamIndex < container.getNumStreams(); streamIndex++) {
IStreamCoder coder = container.getStream(streamIndex).getStreamCoder();
switch (coder.getCodecType()) {
case CODEC_TYPE_VIDEO:
{
videoStream = coder;
videoStreamIndex = streamIndex;
break;
}
case CODEC_TYPE_AUDIO:
{
audioStream = coder;
audioStreamIndex = streamIndex;
break;
}
default:
{
break;
}
}
}
setDecodeMode(DecodeMode.NORMAL);
}
protected void doConvert() throws Exception {
_inputIContainer = IContainer.make();
_outputIContainer = IContainer.make();
openContainer(_inputIContainer, _inputURL, false);
openContainer(_outputIContainer, _outputURL, true);
int inputStreamsCount = _inputIContainer.getNumStreams();
if (inputStreamsCount < 0) {
throw new RuntimeException("Input URL does not have any streams");
}
IContainerFormat iContainerFormat = _outputIContainer.getContainerFormat();
_outputVideoFormat = iContainerFormat.getOutputFormatShortName();
IAudioResampler[] iAudioResamplers = new IAudioResampler[inputStreamsCount];
IVideoResampler[] iVideoResamplers = new IVideoResampler[inputStreamsCount];
IAudioSamples[] inputIAudioSamples = new IAudioSamples[inputStreamsCount];
IAudioSamples[] outputIAudioSamples = new IAudioSamples[inputStreamsCount];
IVideoPicture[] inputIVideoPictures = new IVideoPicture[inputStreamsCount];
IVideoPicture[] outputIVideoPictures = new IVideoPicture[inputStreamsCount];
IStream[] outputIStreams = new IStream[inputStreamsCount];
IStreamCoder[] inputIStreamCoders = new IStreamCoder[inputStreamsCount];
IStreamCoder[] outputIStreamCoders = new IStreamCoder[inputStreamsCount];
for (int i = 0; i < inputStreamsCount; i++) {
IStream inputIStream = _inputIContainer.getStream(i);
IStreamCoder inputIStreamCoder = inputIStream.getStreamCoder();
inputIStreamCoders[i] = inputIStreamCoder;
ICodec.Type inputICodecType = inputIStreamCoder.getCodecType();
if (inputICodecType == ICodec.Type.CODEC_TYPE_AUDIO) {
prepareAudio(
iAudioResamplers,
inputIAudioSamples,
outputIAudioSamples,
inputIStreamCoder,
outputIStreamCoders,
_outputIContainer,
outputIStreams,
inputICodecType,
_outputURL,
i);
} else if (inputICodecType == ICodec.Type.CODEC_TYPE_VIDEO) {
prepareVideo(
iVideoResamplers,
inputIVideoPictures,
outputIVideoPictures,
inputIStreamCoder,
outputIStreamCoders,
_outputIContainer,
outputIStreams,
inputICodecType,
_outputURL,
i);
}
openStreamCoder(inputIStreamCoders[i]);
openStreamCoder(outputIStreamCoders[i]);
}
if (_outputIContainer.writeHeader() < 0) {
throw new RuntimeException("Unable to write container header");
}
boolean keyPacketFound = false;
int nonKeyAfterKeyCount = 0;
boolean onlyDecodeKeyPackets = false;
int previousPacketSize = -1;
IPacket inputIPacket = IPacket.make();
IPacket outputIPacket = IPacket.make();
while (_inputIContainer.readNextPacket(inputIPacket) == 0) {
if (_log.isDebugEnabled()) {
_log.debug("Current packet size " + inputIPacket.getSize());
}
int streamIndex = inputIPacket.getStreamIndex();
IStreamCoder inputIStreamCoder = inputIStreamCoders[streamIndex];
IStreamCoder outputIStreamCoder = outputIStreamCoders[streamIndex];
if (outputIStreamCoder == null) {
continue;
}
IStream iStream = _inputIContainer.getStream(streamIndex);
long timeStampOffset = getStreamTimeStampOffset(iStream);
if (inputIStreamCoder.getCodecType() == ICodec.Type.CODEC_TYPE_AUDIO) {
decodeAudio(
iAudioResamplers[streamIndex],
inputIAudioSamples[streamIndex],
outputIAudioSamples[streamIndex],
inputIPacket,
outputIPacket,
inputIStreamCoder,
outputIStreamCoder,
_outputIContainer,
inputIPacket.getSize(),
previousPacketSize,
streamIndex,
timeStampOffset);
} else if (inputIStreamCoder.getCodecType() == ICodec.Type.CODEC_TYPE_VIDEO) {
keyPacketFound = isKeyPacketFound(inputIPacket, keyPacketFound);
nonKeyAfterKeyCount =
countNonKeyAfterKey(inputIPacket, keyPacketFound, nonKeyAfterKeyCount);
if (isStartDecoding(
inputIPacket,
inputIStreamCoder,
keyPacketFound,
nonKeyAfterKeyCount,
onlyDecodeKeyPackets)) {
int value =
decodeVideo(
iVideoResamplers[streamIndex],
inputIVideoPictures[streamIndex],
outputIVideoPictures[streamIndex],
inputIPacket,
outputIPacket,
inputIStreamCoder,
outputIStreamCoder,
_outputIContainer,
null,
null,
0,
0,
timeStampOffset);
if (value <= 0) {
if (inputIPacket.isKey()) {
throw new RuntimeException("Unable to decode video stream " + streamIndex);
}
onlyDecodeKeyPackets = true;
continue;
}
} else {
if (_log.isDebugEnabled()) {
_log.debug("Do not decode video stream " + streamIndex);
}
}
}
previousPacketSize = inputIPacket.getSize();
}
flush(outputIStreamCoders, _outputIContainer);
if (_outputIContainer.writeTrailer() < 0) {
throw new RuntimeException("Unable to write trailer to output file");
}
cleanUp(iAudioResamplers, iVideoResamplers);
cleanUp(inputIAudioSamples, outputIAudioSamples);
cleanUp(inputIVideoPictures, outputIVideoPictures);
cleanUp(inputIStreamCoders, outputIStreamCoders);
cleanUp(inputIPacket, outputIPacket);
}
/**
* Takes a media container (file) as the first argument, opens it, opens up a Swing window and
* displays video frames with <i>roughly</i> the right timing.
*
* @param args Must contain one string which represents a filename
*/
@SuppressWarnings("deprecation")
public static void main(String[] args) {
if (args.length <= 0)
throw new IllegalArgumentException("must pass in a filename" + " as the first argument");
String filename = args[0];
// Let's make sure that we can actually convert video pixel formats.
if (!IVideoResampler.isSupported(IVideoResampler.Feature.FEATURE_COLORSPACECONVERSION))
throw new RuntimeException(
"you must install the GPL version"
+ " of Xuggler (with IVideoResampler support) for "
+ "this demo to work");
// Create a Xuggler container object
IContainer container = IContainer.make();
// Open up the container
if (container.open(filename, IContainer.Type.READ, null) < 0)
throw new IllegalArgumentException("could not open file: " + filename);
// query how many streams the call to open found
int numStreams = container.getNumStreams();
// and iterate through the streams to find the first video stream
int videoStreamId = -1;
IStreamCoder videoCoder = null;
for (int i = 0; i < numStreams; i++) {
// Find the stream object
IStream stream = container.getStream(i);
// Get the pre-configured decoder that can decode this stream;
IStreamCoder coder = stream.getStreamCoder();
if (coder.getCodecType() == ICodec.Type.CODEC_TYPE_VIDEO) {
videoStreamId = i;
videoCoder = coder;
break;
}
}
if (videoStreamId == -1)
throw new RuntimeException("could not find video stream in container: " + filename);
/*
* Now we have found the video stream in this file. Let's open up our decoder so it can
* do work.
*/
if (videoCoder.open() < 0)
throw new RuntimeException("could not open video decoder for container: " + filename);
IVideoResampler resampler = null;
if (videoCoder.getPixelType() != IPixelFormat.Type.BGR24) {
// if this stream is not in BGR24, we're going to need to
// convert it. The VideoResampler does that for us.
resampler =
IVideoResampler.make(
videoCoder.getWidth(),
videoCoder.getHeight(),
IPixelFormat.Type.BGR24,
videoCoder.getWidth(),
videoCoder.getHeight(),
videoCoder.getPixelType());
if (resampler == null)
throw new RuntimeException("could not create color space " + "resampler for: " + filename);
}
/*
* And once we have that, we draw a window on screen
*/
openJavaWindow();
/*
* Now, we start walking through the container looking at each packet.
*/
IPacket packet = IPacket.make();
long firstTimestampInStream = Global.NO_PTS;
long systemClockStartTime = 0;
while (container.readNextPacket(packet) >= 0) {
/*
* Now we have a packet, let's see if it belongs to our video stream
*/
if (packet.getStreamIndex() == videoStreamId) {
/*
* We allocate a new picture to get the data out of Xuggler
*/
IVideoPicture picture =
IVideoPicture.make(
videoCoder.getPixelType(), videoCoder.getWidth(), videoCoder.getHeight());
int offset = 0;
while (offset < packet.getSize()) {
/*
* Now, we decode the video, checking for any errors.
*
*/
int bytesDecoded = videoCoder.decodeVideo(picture, packet, offset);
if (bytesDecoded < 0)
throw new RuntimeException("got error decoding video in: " + filename);
offset += bytesDecoded;
/*
* Some decoders will consume data in a packet, but will not be able to construct
* a full video picture yet. Therefore you should always check if you
* got a complete picture from the decoder
*/
if (picture.isComplete()) {
IVideoPicture newPic = picture;
/*
* If the resampler is not null, that means we didn't get the
* video in BGR24 format and
* need to convert it into BGR24 format.
*/
if (resampler != null) {
// we must resample
newPic =
IVideoPicture.make(
resampler.getOutputPixelFormat(), picture.getWidth(), picture.getHeight());
if (resampler.resample(newPic, picture) < 0)
throw new RuntimeException("could not resample video from: " + filename);
}
if (newPic.getPixelType() != IPixelFormat.Type.BGR24)
throw new RuntimeException(
"could not decode video" + " as BGR 24 bit data in: " + filename);
/**
* We could just display the images as quickly as we decode them, but it turns out we
* can decode a lot faster than you think.
*
* <p>So instead, the following code does a poor-man's version of trying to match up the
* frame-rate requested for each IVideoPicture with the system clock time on your
* computer.
*
* <p>Remember that all Xuggler IAudioSamples and IVideoPicture objects always give
* timestamps in Microseconds, relative to the first decoded item. If instead you used
* the packet timestamps, they can be in different units depending on your IContainer,
* and IStream and things can get hairy quickly.
*/
if (firstTimestampInStream == Global.NO_PTS) {
// This is our first time through
firstTimestampInStream = picture.getTimeStamp();
// get the starting clock time so we can hold up frames
// until the right time.
systemClockStartTime = System.currentTimeMillis();
} else {
long systemClockCurrentTime = System.currentTimeMillis();
long millisecondsClockTimeSinceStartofVideo =
systemClockCurrentTime - systemClockStartTime;
// compute how long for this frame since the first frame in the
// stream.
// remember that IVideoPicture and IAudioSamples timestamps are
// always in MICROSECONDS,
// so we divide by 1000 to get milliseconds.
long millisecondsStreamTimeSinceStartOfVideo =
(picture.getTimeStamp() - firstTimestampInStream) / 1000;
final long millisecondsTolerance = 50; // and we give ourselfs 50 ms of tolerance
final long millisecondsToSleep =
(millisecondsStreamTimeSinceStartOfVideo
- (millisecondsClockTimeSinceStartofVideo + millisecondsTolerance));
if (millisecondsToSleep > 0) {
try {
Thread.sleep(millisecondsToSleep);
} catch (InterruptedException e) {
// we might get this when the user closes the dialog box, so
// just return from the method.
return;
}
}
}
// And finally, convert the BGR24 to an Java buffered image
BufferedImage javaImage = Utils.videoPictureToImage(newPic);
// and display it on the Java Swing window
updateJavaWindow(javaImage);
}
}
} else {
/*
* This packet isn't part of our video stream, so we just
* silently drop it.
*/
do {} while (false);
}
}
/*
* Technically since we're exiting anyway, these will be cleaned up by
* the garbage collector... but because we're nice people and want
* to be invited places for Christmas, we're going to show how to clean up.
*/
if (videoCoder != null) {
videoCoder.close();
videoCoder = null;
}
if (container != null) {
container.close();
container = null;
}
closeJavaWindow();
}