/**
* Starts transcoding this stream. This method is a no-op if this stream is already a stream copy
* created by this transcoder.
*
* @param aStream The stream to copy.
* @param aScope The application scope.
*/
public synchronized void startTranscodingStream(IBroadcastStream aStream, IScope aScope) {
System.out.println(
"startTranscodingStream(" + aStream.getPublishedName() + "," + aScope.getName() + ")");
if (aStream.getPublishedName().startsWith(getStreamPrefix())) {
System.out.println("Not making a copy of a copy: " + aStream.getPublishedName());
return;
}
System.out.println("Making transcoded version of: " + aStream.getPublishedName());
/*
* Now, we need to set up the output stream we want to broadcast to.
* Turns out aaffmpeg-red5 provides one of those.
*/
String outputName = getStreamPrefix() + aStream.getPublishedName();
BroadcastStream outputStream = new BroadcastStream(outputName);
outputStream.setPublishedName(outputName);
outputStream.setScope(aScope);
IContext context = aScope.getContext();
IProviderService providerService =
(IProviderService) context.getBean(IProviderService.BEAN_NAME);
if (providerService.registerBroadcastStream(aScope, outputName, outputStream)) {
IBroadcastScope bsScope =
(BroadcastScope) providerService.getLiveProviderInput(aScope, outputName, true);
bsScope.setAttribute(IBroadcastScope.STREAM_ATTRIBUTE, outputStream);
} else {
System.out.println("Got a fatal error; could not register broadcast stream");
throw new RuntimeException("fooey!");
}
mOutputStreams.put(aStream.getPublishedName(), outputStream);
outputStream.start();
/** Now let's give aaffmpeg-red5 some information about what we want to transcode as. */
ISimpleMediaFile outputStreamInfo = new SimpleMediaFile();
outputStreamInfo.setHasAudio(true);
outputStreamInfo.setAudioBitRate(32000);
outputStreamInfo.setAudioChannels(1);
outputStreamInfo.setAudioSampleRate(22050);
outputStreamInfo.setAudioCodec(ICodec.ID.CODEC_ID_MP3);
outputStreamInfo.setHasVideo(true);
// Unfortunately the Trans-coder needs to know the width and height
// you want to output as; even if you don't know yet.
outputStreamInfo.setVideoWidth(640);
outputStreamInfo.setVideoHeight(480);
outputStreamInfo.setVideoBitRate(320000);
outputStreamInfo.setVideoCodec(ICodec.ID.CODEC_ID_FLV1);
outputStreamInfo.setVideoGlobalQuality(0);
/** And finally, let's create out transcoder */
Transcoder transcoder =
new Transcoder(aStream, outputStream, outputStreamInfo, null, null, mVideoPictureListener);
Thread transcoderThread = new Thread(transcoder);
transcoderThread.setDaemon(true);
mTranscoders.put(aStream.getPublishedName(), transcoder);
System.out.println("Starting transcoding thread for: " + aStream.getPublishedName());
transcoderThread.start();
}
