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, 147 insertions, 0 deletions

diff --git a/libs/ardour/ardour/ladspa_plugin.h b/libs/ardour/ardour/ladspa_plugin.h
new file mode 100644
index 0000000000..b26e4120b1
--- /dev/null
+++ b/libs/ardour/ardour/ladspa_plugin.h
@@ -0,0 +1,147 @@
+/*
+    Copyright (C) 2000-2006 Paul Davis 
+
+    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_ladspa_plugin_h__
+#define __ardour_ladspa_plugin_h__
+
+#include <set>
+#include <vector>
+#include <string>
+#include <dlfcn.h>
+
+#include <sigc++/signal.h>
+
+#include <pbd/stateful.h> 
+
+#include <jack/types.h>
+#include <ardour/ladspa.h>
+#include <ardour/plugin.h>
+
+namespace ARDOUR {
+class AudioEngine;
+class Session;
+
+class LadspaPlugin : public ARDOUR::Plugin
+{
+  public:
+	LadspaPlugin (void *module, ARDOUR::AudioEngine&, ARDOUR::Session&, uint32_t index, nframes_t sample_rate);
+	LadspaPlugin (const LadspaPlugin &);
+	~LadspaPlugin ();
+
+	/* Plugin interface */
+	
+	std::string unique_id() const;
+	const char* label() const           { return _descriptor->Label; }
+	const char* name() const            { return _descriptor->Name; }
+	const char* maker() const           { return _descriptor->Maker; }
+	uint32_t    parameter_count() const { return _descriptor->PortCount; }
+	float       default_value (uint32_t port);
+	nframes_t   signal_latency() const;
+	void        set_parameter (uint32_t port, float val);
+	float       get_parameter (uint32_t port) const;
+	int         get_parameter_descriptor (uint32_t which, ParameterDescriptor&) const;
+	uint32_t    nth_parameter (uint32_t port, bool& ok) const;
+	
+	std::set<Parameter> automatable() const;
+
+	void activate () { 
+		if (!_was_activated && _descriptor->activate)
+			_descriptor->activate (_handle);
+
+		_was_activated = true;
+	}
+
+	void deactivate () {
+		if (_was_activated && _descriptor->deactivate)
+			_descriptor->deactivate (_handle);
+
+		_was_activated = false;
+	}
+
+	void cleanup () {
+		activate();
+		deactivate();
+
+		if (_descriptor->cleanup)
+			_descriptor->cleanup (_handle);
+	}
+
+	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::string describe_parameter (Parameter);
+	std::string state_node_name() const { return "ladspa"; }
+	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;
+	bool parameter_is_toggled(uint32_t) const;
+
+	XMLNode& get_state();
+	int      set_state(const XMLNode& node);
+	bool     save_preset(std::string name);
+
+	bool has_editor() const { return false; }
+
+	int require_output_streams (uint32_t);
+	
+	/* LADSPA extras */
+
+	LADSPA_Properties           properties() const                { return _descriptor->Properties; }
+	uint32_t                    index() const                     { return _index; }
+	const char *                copyright() const                 { return _descriptor->Copyright; }
+	LADSPA_PortDescriptor       port_descriptor(uint32_t i) const { return _descriptor->PortDescriptors[i]; }
+	const LADSPA_PortRangeHint* port_range_hints() const          { return _descriptor->PortRangeHints; }
+	const char * const *        port_names() const                { return _descriptor->PortNames; }
+	
+	void set_gain (float gain)                    { _descriptor->set_run_adding_gain (_handle, gain); }
+	void run_adding (uint32_t nsamples)           { _descriptor->run_adding (_handle, nsamples); }
+	void connect_port (uint32_t port, float *ptr) { _descriptor->connect_port (_handle, port, ptr); }
+
+  private:
+	void*                    _module;
+	const LADSPA_Descriptor* _descriptor;
+	LADSPA_Handle            _handle;
+	nframes_t                _sample_rate;
+	LADSPA_Data*             _control_data;
+	LADSPA_Data*             _shadow_data;
+	LADSPA_Data*             _latency_control_port;
+	uint32_t                 _index;
+	bool                     _was_activated;
+
+	void init (void *mod, uint32_t index, nframes_t rate);
+	void run_in_place (nframes_t nsamples);
+	void latency_compute_run ();
+};
+
+class LadspaPluginInfo : public PluginInfo {
+  public:	
+	LadspaPluginInfo () { };
+	~LadspaPluginInfo () { };
+
+	PluginPtr load (Session& session);
+};
+
+typedef boost::shared_ptr<LadspaPluginInfo> LadspaPluginInfoPtr;
+
+} // namespace ARDOUR
+
+#endif /* __ardour_ladspa_plugin_h__ */