Use shared audioformatmanager between plugin instances

Source/PluginEditor.cpp

@@ -15,7 +15,7 @@
 //==============================================================================
 PaulstretchpluginAudioProcessorEditor::PaulstretchpluginAudioProcessorEditor (PaulstretchpluginAudioProcessor& p)
     : AudioProcessorEditor (&p),
-    m_wavecomponent(p.m_afm.get()),
+    m_wavecomponent(p.m_afm),
     processor (p)
 
 {

Source/PluginProcessor.cpp

@@ -73,9 +73,9 @@ PaulstretchpluginAudioProcessor::PaulstretchpluginAudioProcessor()
 	g_activeprocessors.insert(this);
 	m_recbuffer.setSize(2, 44100);
 	m_recbuffer.clear();
-	m_afm = std::make_unique<AudioFormatManager>();
-	m_afm->registerBasicFormats();
-	m_stretch_source = std::make_unique<StretchAudioSource>(2, m_afm.get());
+	if (m_afm->getNumKnownFormats()==0)
+		m_afm->registerBasicFormats();
+	m_stretch_source = std::make_unique<StretchAudioSource>(2, m_afm);
 	
 	setPreBufferAmount(2);
 	m_ppar.pitch_shift.enabled = true;

Source/PluginProcessor.h

@@ -15,6 +15,7 @@
 
 class MyThumbCache;
 
+
 class PaulstretchpluginAudioProcessor  : public AudioProcessor
 {
 public:
@@ -64,7 +65,7 @@ public:
 	String setAudioFile(File f);
 	File getAudioFile() { return m_current_file; }
 	Range<double> getTimeSelection();
-	std::unique_ptr<AudioFormatManager> m_afm;
+	SharedResourcePointer<AudioFormatManager> m_afm;
 	StretchAudioSource* getStretchSource() { return m_stretch_source.get(); }
 	double getPreBufferingPercent();
 private: