rollback to 3428, before the mysterious removal of libs/* at 3431/3432

git-svn-id: svn://localhost/ardour2/branches/3.0@3435 d708f5d6-7413-0410-9779-e7cbd77b26cf

1 files changed, 172 insertions, 0 deletions

diff --git a/libs/ardour/ardour/audio_unit.h b/libs/ardour/ardour/audio_unit.h
new file mode 100644
index 0000000000..dc9a52d5d3
--- /dev/null
+++ b/libs/ardour/ardour/audio_unit.h
@@ -0,0 +1,172 @@
+/*
+    Copyright (C) 2006 Paul Davis 
+    Written by Taybin Rutkin
+
+    This program is free software; you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation; either version 2 of the License, or
+    (at your option) any later version.
+
+    This program is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU General Public License for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with this program; if not, write to the Free Software
+    Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+
+*/
+
+#ifndef __ardour_audio_unit_h__
+#define __ardour_audio_unit_h__
+
+#include <stdint.h>
+#include <boost/shared_ptr.hpp>
+
+#include <list>
+#include <set>
+#include <string>
+#include <vector>
+
+#include <ardour/plugin.h>
+
+#include <AudioUnit/AudioUnit.h>
+#include <appleutility/AUParamInfo.h>
+
+#include <boost/shared_ptr.hpp>
+
+class CAComponent;
+class CAAudioUnit;
+class CAComponentDescription;
+struct AudioBufferList;
+
+namespace ARDOUR {
+
+class AudioEngine;
+class Session;
+
+struct AUParameterDescriptor : public Plugin::ParameterDescriptor {
+	// additional fields to make operations more efficient
+	AudioUnitParameterID id;
+	AudioUnitScope scope;
+	AudioUnitElement element;
+	float default_value;
+	bool automatable;
+	AudioUnitParameterUnit unit;
+};
+
+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;
+	const char * label () const;
+	const char * name () const { return _info->name.c_str(); }
+	const char * maker () const { return _info->creator.c_str(); }
+	uint32_t parameter_count () const;
+	float default_value (uint32_t port);
+	nframes_t signal_latency () const;
+	void set_parameter (uint32_t which, float val);
+	float get_parameter (uint32_t which) const;
+    
+	int get_parameter_descriptor (uint32_t which, ParameterDescriptor&) const;
+	uint32_t nth_parameter (uint32_t which, bool& ok) const;
+	void activate ();
+	void deactivate ();
+	void set_block_size (nframes_t nframes);
+    
+	int connect_and_run (BufferSet& bufs, uint32_t& in, uint32_t& out, nframes_t nframes, nframes_t offset);
+	
+	std::set<uint32_t> automatable() const;
+	string describe_parameter (uint32_t);
+	string state_node_name () const { return "audiounit"; }
+	void print_parameter (uint32_t, char*, uint32_t len) const;
+    
+	bool parameter_is_audio (uint32_t) const;
+	bool parameter_is_control (uint32_t) const;
+	bool parameter_is_input (uint32_t) const;
+	bool parameter_is_output (uint32_t) const;
+    
+	XMLNode& get_state();
+	int set_state(const XMLNode& node);
+	
+	bool save_preset (string name);
+	bool load_preset (const string preset_label);
+	std::vector<std::string> get_presets ();
+    
+	bool has_editor () const;
+	
+	bool fixed_io() const { return false; }
+	int32_t can_support_input_configuration (int32_t in);
+	int32_t compute_output_streams (int32_t nplugins);
+	uint32_t output_streams() const;
+	uint32_t input_streams() const;
+
+	boost::shared_ptr<CAAudioUnit> get_au () { return unit; }
+	boost::shared_ptr<CAComponent> get_comp () const { return comp; }
+    
+        OSStatus render_callback(AudioUnitRenderActionFlags *ioActionFlags,
+				 const AudioTimeStamp    *inTimeStamp,
+				 UInt32       inBusNumber,
+				 UInt32       inNumberFrames,
+				 AudioBufferList*       ioData);
+  private:
+        boost::shared_ptr<CAComponent> comp;
+        boost::shared_ptr<CAAudioUnit> unit;
+
+	AudioStreamBasicDescription streamFormat;
+        bool initialized;
+        int format_set;
+	AudioBufferList* buffers;
+	
+	UInt32 global_elements;
+	UInt32 output_elements;
+	UInt32 input_elements;
+	
+	int set_output_format ();
+	int set_input_format ();
+	int set_stream_format (int scope, uint32_t cnt);
+        int _set_block_size (nframes_t nframes);
+	void discover_parameters ();
+
+	std::vector<std::pair<uint32_t, uint32_t> > parameter_map;
+	uint32_t current_maxbuf;
+        nframes_t current_offset;
+        nframes_t cb_offset;
+        vector<Sample*>* current_buffers;
+        nframes_t frames_processed;
+	
+	std::vector<AUParameterDescriptor> descriptors;
+	void init ();
+};
+	
+typedef boost::shared_ptr<AUPlugin> AUPluginPtr;
+
+class AUPluginInfo : public PluginInfo {
+  public:	
+	 AUPluginInfo (boost::shared_ptr<CAComponentDescription>);
+	~AUPluginInfo ();
+
+	PluginPtr load (Session& session);
+
+	static PluginInfoList discover ();
+	static void get_names (CAComponentDescription&, std::string& name, Glib::ustring& maker);
+        static std::string stringify_descriptor (const CAComponentDescription&);
+
+  private:
+	boost::shared_ptr<CAComponentDescription> descriptor;
+
+	static void discover_music (PluginInfoList&);
+	static void discover_fx (PluginInfoList&);
+	static void discover_by_description (PluginInfoList&, CAComponentDescription&);
+};
+
+typedef boost::shared_ptr<AUPluginInfo> AUPluginInfoPtr;
+
+} // namespace ARDOUR
+
+#endif // __ardour_audio_unit_h__