first cut at codec plugins

interface/src/Application.cpp

@@ -85,6 +85,7 @@
 #include <PhysicsEngine.h>
 #include <PhysicsHelpers.h>
 #include <plugins/PluginManager.h>
+#include <plugins/CodecPlugin.h>
 #include <RenderableWebEntityItem.h>
 #include <RenderShadowTask.h>
 #include <RenderDeferredTask.h>
@@ -1236,7 +1237,13 @@ QString Application::getUserAgent() {
             userAgent += " " + formatPluginName(ip->getName());
         }
     }
+    // for codecs, we include all of them, even if not active
+    auto codecPlugins = PluginManager::getInstance()->getCodecPlugins();
+    for (auto& cp : codecPlugins) {
+        userAgent += " " + formatPluginName(cp->getName());
+    }
 
+    qDebug() << __FUNCTION__ << ":" << userAgent;
     return userAgent;
 }
 

libraries/audio-client/src/AudioClient.cpp

@@ -813,19 +813,25 @@ void AudioClient::handleRecordedAudioInput(const QByteArray& audio) {
     emitAudioPacket(audio.data(), audio.size(), _outgoingAvatarAudioSequenceNumber, audioTransform, PacketType::MicrophoneAudioWithEcho);
 }
 
-void AudioClient::processReceivedSamples(const QByteArray& inputBuffer, QByteArray& outputBuffer) {
-    const int numNetworkOutputSamples = inputBuffer.size() / sizeof(int16_t);
-    const int numDeviceOutputSamples = numNetworkOutputSamples * (_outputFormat.sampleRate() * _outputFormat.channelCount())
-        / (_desiredOutputFormat.sampleRate() * _desiredOutputFormat.channelCount());
+void AudioClient::processReceivedSamples(const QByteArray& networkBuffer, QByteArray& outputBuffer) {
+
+    // TODO - codec decode goes here
+    QByteArray decodedBuffer = networkBuffer;
+
+    const int numDecodecSamples = decodedBuffer.size() / sizeof(int16_t);
+    const int numDeviceOutputSamples = _outputFrameSize;
+
+    Q_ASSERT(_outputFrameSize == numDecodecSamples * (_outputFormat.sampleRate() * _outputFormat.channelCount())
+        / (_desiredOutputFormat.sampleRate() * _desiredOutputFormat.channelCount()));
 
     outputBuffer.resize(numDeviceOutputSamples * sizeof(int16_t));
 
-    const int16_t* receivedSamples = reinterpret_cast<const int16_t*>(inputBuffer.data());
+    const int16_t* decodedSamples = reinterpret_cast<const int16_t*>(decodedBuffer.data());
     int16_t* outputSamples = reinterpret_cast<int16_t*>(outputBuffer.data());
 
     // copy the packet from the RB to the output
-    possibleResampling(_networkToOutputResampler, receivedSamples, outputSamples,
-                       numNetworkOutputSamples, numDeviceOutputSamples,
+    possibleResampling(_networkToOutputResampler, decodedSamples, outputSamples,
+                       numDecodecSamples, numDeviceOutputSamples,
                        _desiredOutputFormat, _outputFormat);
 
     // apply stereo reverb at the listener, to the received audio

libraries/plugins/src/plugins/CodecPlugin.h

@@ -0,0 +1,19 @@
+//
+//  CodecPlugin.h
+//  plugins/src/plugins
+//
+//  Created by Brad Hefta-Gaub on 6/9/2016
+//  Copyright 2016 High Fidelity, Inc.
+//
+//  Distributed under the Apache License, Version 2.0.
+//  See the accompanying file LICENSE or http://www.apache.org/licenses/LICENSE-2.0.html
+//
+#pragma once
+
+#include "Plugin.h"
+
+class CodecPlugin : public Plugin {
+public:
+    virtual void decode(const QByteArray& encodedBuffer, QByteArray& decodedBuffer) = 0;
+};
+

libraries/plugins/src/plugins/Forward.h

@@ -13,10 +13,12 @@
 enum class PluginType {
     DISPLAY_PLUGIN,
     INPUT_PLUGIN,
+    CODEC_PLUGIN,
 };
 
 class DisplayPlugin;
 class InputPlugin;
+class CodecPlugin;
 class Plugin;
 class PluginContainer;
 class PluginManager;
@@ -25,4 +27,6 @@ using DisplayPluginPointer = std::shared_ptr<DisplayPlugin>;
 using DisplayPluginList = std::vector<DisplayPluginPointer>;
 using InputPluginPointer = std::shared_ptr<InputPlugin>;
 using InputPluginList = std::vector<InputPluginPointer>;
+using CodecPluginPointer = std::shared_ptr<CodecPlugin>;
+using CodecPluginList = std::vector<CodecPluginPointer>;
 

libraries/plugins/src/plugins/PluginManager.cpp

@@ -18,6 +18,7 @@
 #include <UserActivityLogger.h>
 
 #include "RuntimePlugin.h"
+#include "CodecPlugin.h"
 #include "DisplayPlugin.h"
 #include "InputPlugin.h"
 
@@ -117,6 +118,7 @@ PluginManager::PluginManager() {
 // TODO migrate to a DLL model where plugins are discovered and loaded at runtime by the PluginManager class
 extern DisplayPluginList getDisplayPlugins();
 extern InputPluginList getInputPlugins();
+extern CodecPluginList getCodecPlugins();
 extern void saveInputPluginSettings(const InputPluginList& plugins);
 static DisplayPluginList displayPlugins;
 
@@ -202,6 +204,34 @@ const InputPluginList& PluginManager::getInputPlugins() {
     return inputPlugins;
 }
 
+const CodecPluginList& PluginManager::getCodecPlugins() {
+    static CodecPluginList codecPlugins;
+    static std::once_flag once;
+    std::call_once(once, [&] {
+        //codecPlugins = ::getCodecPlugins();
+
+        // Now grab the dynamic plugins
+        for (auto loader : getLoadedPlugins()) {
+            CodecProvider* codecProvider = qobject_cast<CodecProvider*>(loader->instance());
+            if (codecProvider) {
+                for (auto codecPlugin : codecProvider->getCodecPlugins()) {
+                    if (codecPlugin->isSupported()) {
+                        codecPlugins.push_back(codecPlugin);
+                    }
+                }
+            }
+        }
+
+        auto& container = PluginContainer::getInstance();
+        for (auto plugin : codecPlugins) {
+            plugin->setContainer(&container);
+            plugin->init();
+        }
+    });
+    return codecPlugins;
+}
+
+
 void PluginManager::setPreferredDisplayPlugins(const QStringList& displays) {
     preferredDisplayPlugins = displays;
 }

libraries/plugins/src/plugins/PluginManager.h

@@ -18,6 +18,7 @@ public:
 
     const DisplayPluginList& getDisplayPlugins();
     const InputPluginList& getInputPlugins();
+    const CodecPluginList& getCodecPlugins();
 
     DisplayPluginList getPreferredDisplayPlugins();
     void setPreferredDisplayPlugins(const QStringList& displays);

libraries/plugins/src/plugins/RuntimePlugin.h

@@ -34,3 +34,12 @@ public:
 #define InputProvider_iid "com.highfidelity.plugins.input"
 Q_DECLARE_INTERFACE(InputProvider, InputProvider_iid)
 
+class CodecProvider {
+public:
+    virtual ~CodecProvider() {}
+    virtual CodecPluginList getCodecPlugins() = 0;
+};
+
+#define CodecProvider_iid "com.highfidelity.plugins.codec"
+Q_DECLARE_INTERFACE(CodecProvider, CodecProvider_iid)
+

plugins/pcmCodec/CMakeLists.txt

@@ -0,0 +1,11 @@
+#
+#  Created by Brad Hefta-Gaub on 6/9/2016
+#  Copyright 2016 High Fidelity, Inc.
+#
+#  Distributed under the Apache License, Version 2.0.
+#  See the accompanying file LICENSE or http:#www.apache.org/licenses/LICENSE-2.0.html
+#
+
+set(TARGET_NAME pcmCodec)
+setup_hifi_plugin()
+link_hifi_libraries(shared plugins)

plugins/pcmCodec/src/PCMCodecManager.cpp

@@ -0,0 +1,45 @@
+//
+//  PCMCodecManager.cpp
+//  plugins/pcmCodec/src
+//
+//  Created by Brad Hefta-Gaub on 6/9/2016
+//  Copyright 2016 High Fidelity, Inc.
+//
+//  Distributed under the Apache License, Version 2.0.
+//  See the accompanying file LICENSE or http://www.apache.org/licenses/LICENSE-2.0.html
+//
+
+#include <qapplication.h>
+
+#include <PerfStat.h>
+
+#include "PCMCodecManager.h"
+
+const QString PCMCodecManager::NAME = "PCM Codec";
+
+void PCMCodecManager::init() {
+}
+
+void PCMCodecManager::deinit() {
+}
+
+bool PCMCodecManager::activate() {
+    CodecPlugin::activate();
+    return true;
+}
+
+void PCMCodecManager::deactivate() {
+    CodecPlugin::deactivate();
+}
+
+
+bool PCMCodecManager::isSupported() const {
+    return true;
+}
+
+
+void PCMCodecManager::decode(const QByteArray& encodedBuffer, QByteArray& decodedBuffer) {
+    // this codec doesn't actually do anything....
+    decodedBuffer = encodedBuffer;
+}
+

plugins/pcmCodec/src/PCMCodecManager.h

@@ -0,0 +1,40 @@
+//
+//  PCMCodecManager.h
+//  plugins/pcmCodec/src
+//
+//  Created by Brad Hefta-Gaub on 6/9/2016
+//  Copyright 2016 High Fidelity, Inc.
+//
+//  Distributed under the Apache License, Version 2.0.
+//  See the accompanying file LICENSE or http://www.apache.org/licenses/LICENSE-2.0.html
+//
+
+#ifndef hifi__PCMCodecManager_h
+#define hifi__PCMCodecManager_h
+
+
+#include <plugins/CodecPlugin.h>
+
+class PCMCodecManager : public CodecPlugin {
+    Q_OBJECT
+    
+public:
+    // Plugin functions
+    bool isSupported() const override;
+    const QString& getName() const override { return NAME; }
+
+    void init() override;
+    void deinit() override;
+
+    /// Called when a plugin is being activated for use.  May be called multiple times.
+    bool activate() override;
+    /// Called when a plugin is no longer being used.  May be called multiple times.
+    void deactivate() override;
+
+    virtual void decode(const QByteArray& encodedBuffer, QByteArray& decodedBuffer) override;
+
+private:
+    static const QString NAME;
+};
+
+#endif // hifi__PCMCodecManager_h

plugins/pcmCodec/src/PCMCodecProvider.cpp

@@ -0,0 +1,44 @@
+//
+//  Created by Brad Hefta-Gaub on 6/9/2016
+//  Copyright 2016 High Fidelity, Inc.
+//
+//  Distributed under the Apache License, Version 2.0.
+//  See the accompanying file LICENSE or http://www.apache.org/licenses/LICENSE-2.0.html
+//
+
+#include <mutex>
+
+#include <QtCore/QObject>
+#include <QtCore/QtPlugin>
+#include <QtCore/QStringList>
+
+#include <plugins/RuntimePlugin.h>
+#include <plugins/CodecPlugin.h>
+
+#include "PCMCodecManager.h"
+
+class PCMCodecProvider : public QObject, public CodecProvider {
+    Q_OBJECT
+    Q_PLUGIN_METADATA(IID CodecProvider_iid FILE "plugin.json")
+    Q_INTERFACES(CodecProvider)
+
+public:
+    PCMCodecProvider(QObject* parent = nullptr) : QObject(parent) {}
+    virtual ~PCMCodecProvider() {}
+
+    virtual CodecPluginList getCodecPlugins() override {
+        static std::once_flag once;
+        std::call_once(once, [&] {
+            CodecPluginPointer plugin(new PCMCodecManager());
+            if (plugin->isSupported()) {
+                _codecPlugins.push_back(plugin);
+            }
+        });
+        return _codecPlugins;
+    }
+
+private:
+    CodecPluginList _codecPlugins;
+};
+
+#include "PCMCodecProvider.moc"

plugins/pcmCodec/src/plugin.json

@@ -0,0 +1 @@
+{"name":"PCM Codec"}