Add multichannel support and small syntax and namespace fixes

Basics/foleys_AudioFifo.cpp

@@ -45,7 +45,7 @@ void AudioFifo::pushSamples (const juce::AudioBuffer<float>& samples)
 void AudioFifo::setNumSamples (int samples)
 {
     audioFifo.setTotalSize (samples);
-    audioBuffer.setSize (2, samples);
+    audioBuffer.setSize (audioBuffer.getNumChannels(), samples);
 }
 
 void AudioFifo::pullSamples (const juce::AudioSourceChannelInfo& info)

Basics/foleys_VideoEngine.h

@@ -133,7 +133,7 @@ class VideoEngine  : private juce::Timer
 
     juce::OptionalScopedPointer<juce::UndoManager> undoManager { new juce::UndoManager(), true };
 
-    juce::ThreadPool jobThreads { std::max (4, juce::SystemStats::getNumCpus()) };
+    juce::ThreadPool jobThreads{ (std::max)(4, juce::SystemStats::getNumCpus()) };
     std::vector<std::unique_ptr<juce::TimeSliceThread>> readingThreads;
 
     std::vector<std::shared_ptr<AVClip>> releasePool;

Clips/foleys_AVClip.h

@@ -97,6 +97,8 @@ class AVClip  : public juce::PositionableAudioSource,
     /** Returns true, if this clip will produce audio */
     virtual bool hasAudio() const = 0;
 
+    virtual int getNumChannels() const = 0;
+
     /**
      This is the samplerate supplied from prepareToPlay and the sample rate
      this clip will produce audio and use as clock source. */

Clips/foleys_AudioClip.h

@@ -86,6 +86,8 @@ class AudioClip : public AVClip
 
     std::shared_ptr<AVClip> createCopy (StreamTypes types) override;
 
+    int getNumChannels() const override { return reader.get() ? reader->numChannels : 0; }
+
     double getSampleRate() const override { return sampleRate; }
 
 private:

Clips/foleys_ComposedClip.cpp

@@ -356,6 +356,11 @@ std::shared_ptr<AVClip> ComposedClip::createCopy (StreamTypes)
     return clipCopy;
 }
 
+int ComposedClip::getNumChannels() const
+{
+    return audioSettings.numChannels;
+}
+
 double ComposedClip::getSampleRate() const
 {
     return audioSettings.timebase;

Clips/foleys_ComposedClip.h

@@ -94,6 +94,8 @@ class ComposedClip  : public AVClip,
 
     std::shared_ptr<AVClip> createCopy (StreamTypes types) override;
 
+    int getNumChannels() const override;
+
     double getSampleRate() const override;
 
     /** When rendering non realtime (bounce), use this to wait for background

Clips/foleys_ImageClip.cpp

@@ -143,6 +143,12 @@ std::shared_ptr<AVClip> ImageClip::createCopy (StreamTypes types)
     return engine->createClipFromFile (getMediaFile(), types);
 }
 
+
+int ImageClip::getNumChannels() const
+{ 
+    return 0;
+}
+
 double ImageClip::getSampleRate() const
 {
     return sampleRate;

Clips/foleys_ImageClip.h

@@ -78,6 +78,8 @@ class ImageClip : public AVClip
 
     std::shared_ptr<AVClip> createCopy (StreamTypes types) override;
 
+    int getNumChannels() const override;
+
     double getSampleRate() const override;
 
 private:

Clips/foleys_MovieClip.cpp

@@ -245,6 +245,11 @@ double MovieClip::getSampleRate() const
     return sampleRate;
 }
 
+int MovieClip::getNumChannels() const 
+{
+    return movieReader ? movieReader->numChannels : 0;
+}
+
 void MovieClip::handleAsyncUpdate()
 {
     if (sampleRate > 0 && hasVideo())

Clips/foleys_MovieClip.h

@@ -89,6 +89,8 @@ class MovieClip   : public AVClip,
 
     std::shared_ptr<AVClip> createCopy (StreamTypes types) override;
 
+    int getNumChannels() const override;
+
     double getSampleRate() const override;
 
     /** When rendering non realtime (bounce), use this to wait for background

Widgets/foleys_OpenGLDraw.h

@@ -27,6 +27,7 @@ namespace foleys
 
 namespace OpenGLDrawing
 {
+using namespace juce::gl;
 
 #if JUCE_DEBUG
 static const char* getGLErrorMessage (const GLenum e) noexcept

Widgets/foleys_OpenGLView.cpp

@@ -22,6 +22,7 @@
 
 namespace foleys
 {
+using namespace juce::gl;
 
 OpenGLView::OpenGLView()
 {