make copy-n-paste of AudioUnits work

git-svn-id: svn://localhost/ardour2/branches/2.0-ongoing@3181 d708f5d6-7413-0410-9779-e7cbd77b26cf

libs/ardour/ardour/audio_unit.h

@@ -60,6 +60,7 @@ class AUPlugin : public ARDOUR::Plugin
 {
   public:
 	AUPlugin (AudioEngine& engine, Session& session, boost::shared_ptr<CAComponent> comp);
+	AUPlugin (const AUPlugin& other);
 	virtual ~AUPlugin ();
 	
         std::string unique_id () const;
@@ -105,7 +106,7 @@ class AUPlugin : public ARDOUR::Plugin
 	uint32_t input_streams() const;
 
 	boost::shared_ptr<CAAudioUnit> get_au () { return unit; }
-	boost::shared_ptr<CAComponent> get_comp () { return comp; }
+	boost::shared_ptr<CAComponent> get_comp () const { return comp; }
     
         OSStatus render_callback(AudioUnitRenderActionFlags *ioActionFlags,
 				 const AudioTimeStamp    *inTimeStamp,
@@ -139,6 +140,7 @@ class AUPlugin : public ARDOUR::Plugin
         nframes_t frames_processed;
 	
 	std::vector<AUParameterDescriptor> descriptors;
+	void init ();
 };
 	
 typedef boost::shared_ptr<AUPlugin> AUPluginPtr;

libs/ardour/audio_unit.cc

@@ -55,17 +55,49 @@ _render_callback(void *userData,
 }
 
 AUPlugin::AUPlugin (AudioEngine& engine, Session& session, boost::shared_ptr<CAComponent> _comp)
-	:
-	Plugin (engine, session),
-	comp (_comp),
-	unit (new CAAudioUnit),
-	initialized (false),
-	buffers (0),
-	current_maxbuf (0),
-	current_offset (0),
-	current_buffers (0),
+	: Plugin (engine, session),
+	  comp (_comp),
+	  unit (new CAAudioUnit),
+	  initialized (false),
+	  buffers (0),
+	  current_maxbuf (0),
+	  current_offset (0),
+	  current_buffers (0),
 	frames_processed (0)
 {			
+	init ();
+}
+
+AUPlugin::AUPlugin (const AUPlugin& other)
+	: Plugin (other)
+	, comp (other.get_comp())
+	, unit (new CAAudioUnit)
+	, initialized (false)
+	, buffers (0)
+	, current_maxbuf (0)
+	, current_offset (0)
+	, current_buffers (0)
+	, frames_processed (0)
+	  
+{
+	init ();
+}
+
+AUPlugin::~AUPlugin ()
+{
+	if (unit) {
+		unit->Uninitialize ();
+	}
+
+	if (buffers) {
+		free (buffers);
+	}
+}
+
+
+void
+AUPlugin::init ()
+{
 	OSErr err = CAAudioUnit::Open (*(comp.get()), *unit);
 
 	if (err != noErr) {
@@ -90,7 +122,7 @@ AUPlugin::AUPlugin (AudioEngine& engine, Session& session, boost::shared_ptr<CAC
 
 	// set up the basic stream format. these fields do not change
 			    
-	streamFormat.mSampleRate = session.frame_rate();
+	streamFormat.mSampleRate = _session.frame_rate();
 	streamFormat.mFormatID = kAudioFormatLinearPCM;
 	streamFormat.mFormatFlags = kAudioFormatFlagIsFloat|kAudioFormatFlagIsPacked|kAudioFormatFlagIsNonInterleaved;
 
@@ -121,17 +153,6 @@ AUPlugin::AUPlugin (AudioEngine& engine, Session& session, boost::shared_ptr<CAC
 	Plugin::setup_controls ();
 }
 
-AUPlugin::~AUPlugin ()
-{
-	if (unit) {
-		unit->Uninitialize ();
-	}
-
-	if (buffers) {
-		free (buffers);
-	}
-}
-
 void
 AUPlugin::discover_parameters ()
 {

libs/ardour/plugin.cc

@@ -77,9 +77,7 @@ Plugin::setup_controls ()
 	   we'll fill this in on an as-needed basis.
 	*/
 
-	for (uint32_t i = 0; i < port_cnt; ++i) {
-		controls.push_back (0);
-	}
+	controls.assign (port_cnt, (PortControllable*) 0);
 }
 
 Plugin::~Plugin ()

svn_revision.h

@@ -1,4 +1,4 @@
 #ifndef __ardour_svn_revision_h__
 #define __ardour_svn_revision_h__
-static const char* ardour_svn_revision = "3142";
+static const char* ardour_svn_revision = "3144";
 #endif