mirror of
https://github.com/DSheirer/sdrtrunk.git
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845 lines
27 KiB
Java
845 lines
27 KiB
Java
/*******************************************************************************
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* SDR Trunk
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* Copyright (C) 2015-2016 Dennis Sheirer
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>
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******************************************************************************/
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package module;
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import audio.AudioPacket;
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import audio.IAudioPacketListener;
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import audio.IAudioPacketProvider;
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import audio.metadata.IMetadataListener;
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import audio.metadata.IMetadataProvider;
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import audio.metadata.Metadata;
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import audio.squelch.ISquelchStateListener;
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import audio.squelch.ISquelchStateProvider;
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import audio.squelch.SquelchState;
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import controller.NamingThreadFactory;
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import controller.channel.Channel.ChannelType;
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import controller.channel.ChannelEvent;
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import controller.channel.IChannelEventListener;
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import controller.channel.IChannelEventProvider;
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import message.IMessageListener;
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import message.IMessageProvider;
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import message.Message;
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import module.decode.event.CallEvent;
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import module.decode.event.CallEventModel;
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import module.decode.event.ICallEventListener;
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import module.decode.event.ICallEventProvider;
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import module.decode.event.MessageActivityModel;
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import module.decode.state.ChannelState;
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import module.decode.state.DecoderState;
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import module.decode.state.DecoderStateEvent;
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import module.decode.state.DecoderStateEvent.Event;
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import module.decode.state.IDecoderStateEventListener;
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import module.decode.state.IDecoderStateEventProvider;
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import module.decode.state.State;
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import module.log.EventLogger;
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import org.slf4j.Logger;
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import org.slf4j.LoggerFactory;
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import record.wave.ComplexBufferWaveRecorder;
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import record.wave.RealBufferWaveRecorder;
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import sample.Broadcaster;
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import sample.Listener;
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import sample.complex.ComplexBuffer;
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import sample.complex.IComplexBufferListener;
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import sample.real.IFilteredRealBufferListener;
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import sample.real.IFilteredRealBufferProvider;
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import sample.real.IUnFilteredRealBufferListener;
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import sample.real.IUnFilteredRealBufferProvider;
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import sample.real.RealBuffer;
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import source.ComplexSource;
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import source.RealSource;
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import source.Source;
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import source.SourceException;
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import source.tuner.TunerChannelSource;
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import source.tuner.frequency.FrequencyChangeEvent;
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import source.tuner.frequency.IFrequencyChangeListener;
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import source.tuner.frequency.IFrequencyChangeProvider;
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import java.util.ArrayList;
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import java.util.List;
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import java.util.concurrent.Executors;
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import java.util.concurrent.ScheduledExecutorService;
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import java.util.concurrent.atomic.AtomicBoolean;
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/**
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* Processing chain provides a framework for connecting a complex or real sample
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* source to a set of one primary decoder and zero or more auxiliary decoders.
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* All decoded messages and call events produced by the decoders and the decoder
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* call states are aggregated by the various broadcasters. You can register
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* listeners to receive aggregated messages, call events, and audio packets.
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*
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* Normal setup sequence:
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*
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* 1) Add one or more modules
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* 2) Register listeners to receive messages, call events, audio, etc.
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* 3) Add a valid source
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* 4) Invoke the start() method to start processing.
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* 5) Invoke the stop() method to stop processing.
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*
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* Optional: if you want to reuse the processing chain with a new sample source,
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* invoke the following method sequence: stop(), setSource(), start()
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*/
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public class ProcessingChain implements IChannelEventListener
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{
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private final static Logger mLog = LoggerFactory.getLogger(ProcessingChain.class);
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private Broadcaster<AudioPacket> mAudioPacketBroadcaster = new Broadcaster<>();
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private Broadcaster<Metadata> mMetadataBroadcaster = new Broadcaster<>();
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private Broadcaster<CallEvent> mCallEventBroadcaster = new Broadcaster<>();
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private Broadcaster<ChannelEvent> mChannelEventBroadcaster = new Broadcaster<>();
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private Broadcaster<ComplexBuffer> mComplexBufferBroadcaster = new Broadcaster<>();
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private Broadcaster<DecoderStateEvent> mDecoderStateEventBroadcaster = new Broadcaster<>();
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private Broadcaster<FrequencyChangeEvent> mFrequencyChangeEventBroadcaster = new Broadcaster<>();
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private Broadcaster<Message> mMessageBroadcaster = new Broadcaster<>();
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private Broadcaster<RealBuffer> mFilteredRealBufferBroadcaster = new Broadcaster<>();
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private Broadcaster<RealBuffer> mUnFilteredRealBufferBroadcaster = new Broadcaster<>();
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private Broadcaster<SquelchState> mSquelchStateBroadcaster = new Broadcaster<>();
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private ScheduledExecutorService mScheduledExecutorService;
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private String mName;
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private AtomicBoolean mRunning = new AtomicBoolean();
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protected Source mSource;
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private List<Module> mModules = new ArrayList<>();
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private CallEventModel mCallEventModel;
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private ChannelState mChannelState;
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private MessageActivityModel mMessageActivityModel;
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/**
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* Creates a processing chain for managing a set of modules
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*
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* @param name for thread pool naming each thread
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* @param channelType
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*/
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public ProcessingChain(String name, ChannelType channelType)
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{
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mName = name;
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mChannelState = new ChannelState(channelType);
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addModule(mChannelState);
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mCallEventModel = new CallEventModel();
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addCallEventListener(mCallEventModel);
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}
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public CallEventModel getCallEventModel()
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{
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return mCallEventModel;
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}
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public ChannelState getChannelState()
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{
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return mChannelState;
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}
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public MessageActivityModel getMessageActivityModel()
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{
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return mMessageActivityModel;
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}
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public void setMessageActivityModel(MessageActivityModel model)
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{
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mMessageActivityModel = model;
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addMessageListener(mMessageActivityModel);
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}
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public void dispose()
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{
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stop();
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for(Module module : mModules)
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{
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module.dispose();
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}
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mModules.clear();
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mScheduledExecutorService.shutdownNow();
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mScheduledExecutorService = null;
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mAudioPacketBroadcaster.dispose();
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mCallEventBroadcaster.dispose();
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mChannelEventBroadcaster.dispose();
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mComplexBufferBroadcaster.dispose();
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mMessageBroadcaster.dispose();
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mFilteredRealBufferBroadcaster.dispose();
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mSquelchStateBroadcaster.dispose();
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if(mScheduledExecutorService != null)
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{
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mScheduledExecutorService.shutdownNow();
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}
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}
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/**
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* Broadcasts the metadata to any registered listeners
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*/
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public void broadcast(Metadata metadata)
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{
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if(mMetadataBroadcaster != null)
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{
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mMetadataBroadcaster.broadcast(metadata);
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}
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}
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/**
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* Indicates if this processing chain is currently receiving samples from
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* a source and sending those samples to the decoders.
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*/
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public boolean isProcessing()
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{
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return mRunning.get();
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}
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/**
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* Indicates if this chain currently has a valid sample source.
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*/
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public boolean hasSource()
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{
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return mSource != null;
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}
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/**
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* Applies a sample source to this processing chain. Processing won't
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* start until the start() method is invoked.
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*
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* @param source - real or complex sample source
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* @throws IllegalStateException if the processing chain is currently
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* processing with another source. Invoke stop() before applying a new
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* source.
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*/
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public void setSource(Source source) throws IllegalStateException
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{
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if(isProcessing())
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{
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throw new IllegalStateException("Processing chain is currently "
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+ "processing. Invoke stop() on the processing chain before "
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+ "applying a new sample source");
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}
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mSource = source;
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}
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/**
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* List of current modules for this processing chain
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*/
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public List<Module> getModules()
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{
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return mModules;
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}
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/**
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* List of decoder states for this processing chain
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*/
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public List<DecoderState> getDecoderStates()
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{
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List<DecoderState> decoderStates = new ArrayList<>();
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for(Module module : mModules)
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{
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if(module instanceof DecoderState)
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{
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decoderStates.add((DecoderState) module);
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}
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}
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return decoderStates;
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}
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/**
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* Adds the list of modules to this processing chain
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*/
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public void addModules(List<Module> modules)
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{
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for(Module module : modules)
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{
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addModule(module);
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}
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}
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/**
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* Adds a module to the processing chain. Each module is tested for the
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* interfaces that it supports and is registered or receives a listener
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* to consume or produce the supported interface data type. All elements
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* and events that are produced by any module are automatically routed to
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* all other components that support the corresponding listener interface.
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*
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* At least one module should consume complex samples and either produce
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* decoded messages and/or audio, or produce decoded real sample buffers
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* for all other modules to consume.
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*
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* @param module - processing module, demodulator, decoder, source, state
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* machine, etc.
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*/
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public void addModule(Module module)
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{
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mModules.add(module);
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registerListeners(module);
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registerProviders(module);
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}
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/**
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* Removes the module from the processing chain and deregisters the module as a listener and
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* as a provider
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*/
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public void removeModule(Module module)
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{
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unregisterListeners(module);
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unregisterProviders(module);
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mModules.remove(module);
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}
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/**
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* Registers the module as a listener to each of the broadcasters that
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* provide the data interface(s) supported by the module.
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*/
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private void registerListeners(Module module)
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{
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if(module instanceof IAudioPacketListener)
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{
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mAudioPacketBroadcaster.addListener(
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((IAudioPacketListener) module).getAudioPacketListener());
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}
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if(module instanceof ICallEventListener)
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{
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mCallEventBroadcaster.addListener(
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((ICallEventListener) module).getCallEventListener());
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}
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if(module instanceof IChannelEventListener)
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{
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mChannelEventBroadcaster.addListener(
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((IChannelEventListener) module).getChannelEventListener());
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}
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if(module instanceof IComplexBufferListener)
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{
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mComplexBufferBroadcaster.addListener(
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((IComplexBufferListener) module).getComplexBufferListener());
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}
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if(module instanceof IDecoderStateEventListener)
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{
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mDecoderStateEventBroadcaster.addListener(
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((IDecoderStateEventListener) module).getDecoderStateListener());
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}
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if(module instanceof IFrequencyChangeListener)
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{
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mFrequencyChangeEventBroadcaster.addListener(
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((IFrequencyChangeListener) module).getFrequencyChangeListener());
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}
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if(module instanceof IMessageListener)
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{
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mMessageBroadcaster.addListener(
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((IMessageListener) module).getMessageListener());
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}
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if(module instanceof IMetadataListener)
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{
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mMetadataBroadcaster.addListener(
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((IMetadataListener) module).getMetadataListener());
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}
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if(module instanceof IFilteredRealBufferListener)
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{
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mFilteredRealBufferBroadcaster.addListener(
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((IFilteredRealBufferListener) module).getFilteredRealBufferListener());
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}
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if(module instanceof ISquelchStateListener)
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{
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mSquelchStateBroadcaster.addListener(
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((ISquelchStateListener) module).getSquelchStateListener());
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}
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if(module instanceof IUnFilteredRealBufferListener)
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{
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mUnFilteredRealBufferBroadcaster.addListener(
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((IUnFilteredRealBufferListener) module).getUnFilteredRealBufferListener());
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}
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}
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/**
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* Registers the module as a listener to each of the broadcasters that
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* provide the data interface(s) supported by the module.
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*/
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private void unregisterListeners(Module module)
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{
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if(module instanceof IAudioPacketListener)
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{
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mAudioPacketBroadcaster.removeListener(
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((IAudioPacketListener) module).getAudioPacketListener());
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}
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if(module instanceof ICallEventListener)
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{
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mCallEventBroadcaster.removeListener(
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((ICallEventListener) module).getCallEventListener());
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}
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if(module instanceof IChannelEventListener)
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{
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mChannelEventBroadcaster.removeListener(
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((IChannelEventListener) module).getChannelEventListener());
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}
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if(module instanceof IComplexBufferListener)
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{
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mComplexBufferBroadcaster.removeListener(
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((IComplexBufferListener) module).getComplexBufferListener());
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}
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if(module instanceof IDecoderStateEventListener)
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{
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mDecoderStateEventBroadcaster.removeListener(
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((IDecoderStateEventListener) module).getDecoderStateListener());
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}
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if(module instanceof IFrequencyChangeListener)
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{
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mFrequencyChangeEventBroadcaster.removeListener(
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((IFrequencyChangeListener) module).getFrequencyChangeListener());
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}
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if(module instanceof IMessageListener)
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{
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mMessageBroadcaster.removeListener(((IMessageListener) module).getMessageListener());
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}
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if(module instanceof IMetadataListener)
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{
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mMetadataBroadcaster.removeListener(((IMetadataListener) module).getMetadataListener());
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}
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if(module instanceof IFilteredRealBufferListener)
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{
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mFilteredRealBufferBroadcaster.removeListener(
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((IFilteredRealBufferListener) module).getFilteredRealBufferListener());
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}
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if(module instanceof ISquelchStateListener)
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{
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mSquelchStateBroadcaster.removeListener(
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((ISquelchStateListener) module).getSquelchStateListener());
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}
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if(module instanceof IUnFilteredRealBufferListener)
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{
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mUnFilteredRealBufferBroadcaster.removeListener(
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((IUnFilteredRealBufferListener) module).getUnFilteredRealBufferListener());
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}
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}
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/**
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* Registers the broadcaster(s) as listeners to the module for each
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* provider interface that is supported by the module.
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*/
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private void registerProviders(Module module)
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{
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if(module instanceof IAudioPacketProvider)
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{
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((IAudioPacketProvider) module).setAudioPacketListener(
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mAudioPacketBroadcaster);
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}
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if(module instanceof ICallEventProvider)
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{
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((ICallEventProvider) module).addCallEventListener(mCallEventBroadcaster);
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}
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if(module instanceof IChannelEventProvider)
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{
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((IChannelEventProvider) module).setChannelEventListener(
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mChannelEventBroadcaster);
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}
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if(module instanceof IDecoderStateEventProvider)
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{
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((IDecoderStateEventProvider) module).setDecoderStateListener(
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mDecoderStateEventBroadcaster);
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}
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if(module instanceof IFrequencyChangeProvider)
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{
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((IFrequencyChangeProvider) module).setFrequencyChangeListener(
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mFrequencyChangeEventBroadcaster);
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}
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if(module instanceof IMessageProvider)
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{
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((IMessageProvider) module).setMessageListener(mMessageBroadcaster);
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}
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if(module instanceof IMetadataProvider)
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{
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((IMetadataProvider) module).setMetadataListener(
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mMetadataBroadcaster);
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}
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if(module instanceof IFilteredRealBufferProvider)
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{
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((IFilteredRealBufferProvider) module)
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.setFilteredRealBufferListener(mFilteredRealBufferBroadcaster);
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}
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if(module instanceof ISquelchStateProvider)
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{
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((ISquelchStateProvider) module).setSquelchStateListener(
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mSquelchStateBroadcaster);
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}
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if(module instanceof IUnFilteredRealBufferProvider)
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{
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((IUnFilteredRealBufferProvider) module)
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.setUnFilteredRealBufferListener(mUnFilteredRealBufferBroadcaster);
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}
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}
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/**
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* Unregisters the broadcaster(s) as listeners to the module for each
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* provider interface that is supported by the module.
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*/
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private void unregisterProviders(Module module)
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{
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if(module instanceof IAudioPacketProvider)
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{
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((IAudioPacketProvider) module).setAudioPacketListener(null);
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}
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if(module instanceof ICallEventProvider)
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{
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((ICallEventProvider) module).removeCallEventListener(mCallEventBroadcaster);
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}
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if(module instanceof IChannelEventProvider)
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{
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((IChannelEventProvider) module).setChannelEventListener(null);
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}
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if(module instanceof IDecoderStateEventProvider)
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{
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((IDecoderStateEventProvider) module).setDecoderStateListener(null);
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}
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if(module instanceof IFrequencyChangeProvider)
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{
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((IFrequencyChangeProvider) module).setFrequencyChangeListener(null);
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}
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if(module instanceof IMessageProvider)
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{
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((IMessageProvider) module).setMessageListener(null);
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}
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if(module instanceof IMetadataProvider)
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{
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((IMetadataProvider) module).setMetadataListener(null);
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}
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if(module instanceof IFilteredRealBufferProvider)
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{
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((IFilteredRealBufferProvider) module).setFilteredRealBufferListener(null);
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}
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if(module instanceof ISquelchStateProvider)
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{
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((ISquelchStateProvider) module).setSquelchStateListener(null);
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}
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if(module instanceof IUnFilteredRealBufferProvider)
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{
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((IUnFilteredRealBufferProvider) module).setUnFilteredRealBufferListener(null);
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}
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}
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|
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/**
|
|
* Starts processing if the chain has a valid source. Invocations on an
|
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* already started chain have no effect.
|
|
*/
|
|
public void start()
|
|
{
|
|
if(mRunning.compareAndSet(false, true))
|
|
{
|
|
if(mSource != null)
|
|
{
|
|
/* Reset each of the modules */
|
|
for(Module module : mModules)
|
|
{
|
|
module.reset();
|
|
}
|
|
|
|
/* Register with the source to receive sample data. Setup a
|
|
* timer task to process the buffer queues 50 times a second
|
|
* (every 20 ms) */
|
|
switch(mSource.getSampleType())
|
|
{
|
|
case COMPLEX:
|
|
((ComplexSource) mSource).setListener(mComplexBufferBroadcaster);
|
|
break;
|
|
case REAL:
|
|
((RealSource) mSource).setListener(mFilteredRealBufferBroadcaster);
|
|
break;
|
|
default:
|
|
throw new IllegalArgumentException("Unrecognized source "
|
|
+ "sample type - cannot start processing chain");
|
|
}
|
|
|
|
/* If this is a tuner source, broadcast the frequency to all
|
|
* of the decoder state's and start the samples flowing */
|
|
if(mSource instanceof TunerChannelSource)
|
|
{
|
|
TunerChannelSource tcs = (TunerChannelSource) mSource;
|
|
|
|
try
|
|
{
|
|
long frequency = tcs.getFrequency();
|
|
|
|
mDecoderStateEventBroadcaster.broadcast(
|
|
new DecoderStateEvent(this, Event.SOURCE_FREQUENCY,
|
|
State.IDLE, frequency));
|
|
}
|
|
catch(SourceException e)
|
|
{
|
|
mLog.error("Error getting frequency from tuner channel source", e);
|
|
}
|
|
}
|
|
|
|
if(mScheduledExecutorService == null)
|
|
{
|
|
mScheduledExecutorService = Executors.newScheduledThreadPool(
|
|
1, new NamingThreadFactory("channel " + mName));
|
|
}
|
|
|
|
/* Start each of the modules */
|
|
for(Module module : mModules)
|
|
{
|
|
try
|
|
{
|
|
module.start(mScheduledExecutorService);
|
|
}
|
|
catch(Exception e)
|
|
{
|
|
mLog.error("Error starting module", e);
|
|
}
|
|
}
|
|
|
|
mSource.start(mScheduledExecutorService);
|
|
}
|
|
else
|
|
{
|
|
mLog.error("Source is null on start()");
|
|
}
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Stops processing if the chain is currently processing. Invocations on
|
|
* an already stopped chain have no effect.
|
|
*/
|
|
public void stop()
|
|
{
|
|
if(mRunning.compareAndSet(true, false))
|
|
{
|
|
if(mSource != null)
|
|
{
|
|
mSource.stop();
|
|
|
|
switch(mSource.getSampleType())
|
|
{
|
|
case COMPLEX:
|
|
((ComplexSource) mSource).removeListener(mComplexBufferBroadcaster);
|
|
break;
|
|
case REAL:
|
|
((RealSource) mSource).removeListener(mFilteredRealBufferBroadcaster);
|
|
break;
|
|
default:
|
|
throw new IllegalArgumentException("Unrecognized source "
|
|
+ "sample type - cannot start processing chain");
|
|
}
|
|
|
|
/* Release the source */
|
|
mSource.dispose();
|
|
mSource = null;
|
|
}
|
|
|
|
/* Stop each of the modules */
|
|
for(Module module : mModules)
|
|
{
|
|
module.stop();
|
|
}
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Removes any logging modules that are currently registered with this processing chain
|
|
*/
|
|
public void removeEventLoggingModules()
|
|
{
|
|
List<Module> eventLoggingModules = new ArrayList<>();
|
|
|
|
for(Module module: mModules)
|
|
{
|
|
if(module instanceof EventLogger)
|
|
{
|
|
eventLoggingModules.add(module);
|
|
}
|
|
}
|
|
|
|
for(Module eventLoggingModule: eventLoggingModules)
|
|
{
|
|
removeModule(eventLoggingModule);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Removes any recording modules that are currently registered with this processing chain
|
|
*/
|
|
public void removeRecordingModules()
|
|
{
|
|
List<Module> recordingModules = new ArrayList<>();
|
|
|
|
for(Module module: mModules)
|
|
{
|
|
if(module instanceof RealBufferWaveRecorder || module instanceof ComplexBufferWaveRecorder)
|
|
{
|
|
recordingModules.add(module);
|
|
}
|
|
}
|
|
|
|
for(Module recordingModule: recordingModules)
|
|
{
|
|
removeModule(recordingModule);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Adds the listener to receive audio packets from all modules.
|
|
*/
|
|
public void addAudioPacketListener(Listener<AudioPacket> listener)
|
|
{
|
|
mAudioPacketBroadcaster.addListener(listener);
|
|
}
|
|
|
|
public void removeAudioPacketListener(Listener<AudioPacket> listener)
|
|
{
|
|
mAudioPacketBroadcaster.removeListener(listener);
|
|
}
|
|
|
|
/**
|
|
* Adds the listener to receive call events from all modules.
|
|
*/
|
|
public void addCallEventListener(Listener<CallEvent> listener)
|
|
{
|
|
mCallEventBroadcaster.addListener(listener);
|
|
}
|
|
|
|
public void removeCallEventListener(Listener<CallEvent> listener)
|
|
{
|
|
mCallEventBroadcaster.removeListener(listener);
|
|
}
|
|
|
|
/**
|
|
* Adds the listener to receive call events from all modules.
|
|
*/
|
|
public void addChannelEventListener(Listener<ChannelEvent> listener)
|
|
{
|
|
mChannelEventBroadcaster.addListener(listener);
|
|
}
|
|
|
|
public void removeChannelEventListener(Listener<ChannelEvent> listener)
|
|
{
|
|
mChannelEventBroadcaster.removeListener(listener);
|
|
}
|
|
|
|
/**
|
|
* Adds the listener to receive decoder state events from decoder modules
|
|
*/
|
|
public void addDecoderStateEventListener(Listener<DecoderStateEvent> listener)
|
|
{
|
|
mDecoderStateEventBroadcaster.addListener(listener);
|
|
}
|
|
|
|
public void removeDecoderStateEventListener(Listener<DecoderStateEvent> listener)
|
|
{
|
|
mDecoderStateEventBroadcaster.removeListener(listener);
|
|
}
|
|
|
|
public Listener<DecoderStateEvent> getDecoderStateEventListener()
|
|
{
|
|
return mDecoderStateEventBroadcaster;
|
|
}
|
|
|
|
/**
|
|
* Adds the listener to receive decoded messages from all decoders.
|
|
*/
|
|
public void addMessageListener(Listener<Message> listener)
|
|
{
|
|
mMessageBroadcaster.addListener(listener);
|
|
}
|
|
|
|
/**
|
|
* Adds the list of listeners to receive decoded messages from all decoders.
|
|
*/
|
|
public void addMessageListeners(List<Listener<Message>> listeners)
|
|
{
|
|
for(Listener<Message> listener : listeners)
|
|
{
|
|
mMessageBroadcaster.addListener(listener);
|
|
}
|
|
}
|
|
|
|
public void removeMessageListener(Listener<Message> listener)
|
|
{
|
|
mMessageBroadcaster.removeListener(listener);
|
|
}
|
|
|
|
/**
|
|
* Adds the listener to receive call events from all modules.
|
|
*/
|
|
public void addSquelchStateListener(Listener<SquelchState> listener)
|
|
{
|
|
mSquelchStateBroadcaster.addListener(listener);
|
|
}
|
|
|
|
public void removeSquelchStateListener(Listener<SquelchState> listener)
|
|
{
|
|
mSquelchStateBroadcaster.removeListener(listener);
|
|
}
|
|
|
|
public void addRealBufferListener(Listener<RealBuffer> listener)
|
|
{
|
|
mFilteredRealBufferBroadcaster.addListener(listener);
|
|
}
|
|
|
|
public void removeRealBufferListener(Listener<RealBuffer> listener)
|
|
{
|
|
mFilteredRealBufferBroadcaster.removeListener(listener);
|
|
}
|
|
|
|
@Override
|
|
public Listener<ChannelEvent> getChannelEventListener()
|
|
{
|
|
return mChannelEventBroadcaster;
|
|
}
|
|
}
|