NO-OP; document some more parameters.

Since headers only provide the declaration, function
parameters need to be documented.

libs/ardour/ardour/lua_api.h

@@ -100,8 +100,8 @@ namespace ARDOUR { namespace LuaAPI {
 	 * This is equivalent to the following lua code
 	 * @code
 	 * function (processor, param_id)
-	 * 	local plugininsert = processor:to_insert ()
-	 * 	local plugin = plugininsert:plugin(0)
+	 *  local plugininsert = processor:to_insert ()
+	 *  local plugin = plugininsert:plugin(0)
 	 *  local _, t = plugin:get_parameter_descriptor(param_id, ARDOUR.ParameterDescriptor ())
 	 *  local ctrl = Evoral.Parameter (ARDOUR.AutomationType.PluginAutomation, 0, param_id)
 	 *  local ac = pi:automation_control (ctrl, false)
@@ -110,7 +110,7 @@ namespace ARDOUR { namespace LuaAPI {
 	 * end
 	 * @endcode
 	 *
-	 * Example usage: get 3rd input parameter of first plugin on the given route
+	 * Example usage: get the third input parameter of first plugin on the given route
 	 * (Ardour starts counting at zero).
 	 * @code
 	 * local al, cl, pd = ARDOUR.LuaAPI.plugin_automation (route:nth_plugin (0), 3)

libs/ardour/ardour/route.h

@@ -238,6 +238,7 @@ class LIBARDOUR_API Route : public SessionObject, public Automatable, public Rou
 	/* special processors */
 
 	boost::shared_ptr<InternalSend>     monitor_send() const { return _monitor_send; }
+	/** the signal processorat at end of the processing chain which produces output */
 	boost::shared_ptr<Delivery>         main_outs() const { return _main_outs; }
 	boost::shared_ptr<InternalReturn>   internal_return() const { return _intreturn; }
 	boost::shared_ptr<MonitorProcessor> monitor_control() const { return _monitor_control; }

libs/ardour/ardour/session.h

@@ -228,6 +228,13 @@ class LIBARDOUR_API Session : public PBD::StatefulDestructible, public PBD::Scop
 	std::string new_audio_source_path_for_embedded (const std::string& existing_path);
 	std::string new_audio_source_path (const std::string&, uint32_t nchans, uint32_t chan, bool destructive, bool take_required);
 	std::string new_midi_source_path (const std::string&);
+	/** create a new track or bus from a template (XML path)
+	 * @param how_many how many tracks or busses to create
+	 * @param template_path path to xml template file
+	 * @param name name (prefix) of the route to create
+	 * @param pd Playlist disposition
+	 * @return list of newly created routes
+	 */
 	RouteList new_route_from_template (uint32_t how_many, const std::string& template_path, const std::string& name, PlaylistDisposition pd = NewPlaylist);
 	RouteList new_route_from_template (uint32_t how_many, XMLNode&, const std::string& name, PlaylistDisposition pd = NewPlaylist);
 	std::vector<std::string> get_paths_for_new_sources (bool allow_replacing, const std::string& import_file_path, uint32_t channels);
@@ -472,6 +479,13 @@ class LIBARDOUR_API Session : public PBD::StatefulDestructible, public PBD::Scop
 	};
 
 	int save_as (SaveAs&);
+	/** save session
+	 * @param snapshot_name name of the session (use an empty string for the current name)
+	 * @param pending save a 'recovery', not full state (default: false)
+	 * @param switch_to_snapshot switch to given snapshot after saving (default: false)
+	 * @param template_only save a session template (default: false)
+	 * @return zero on success
+	 */
 	int save_state (std::string snapshot_name, bool pending = false, bool switch_to_snapshot = false, bool template_only = false);
 	int restore_state (std::string snapshot_name);
 	int save_template (std::string template_name, bool replace_existing = false);

libs/ardour/ardour/track.h

@@ -102,11 +102,26 @@ class LIBARDOUR_API Track : public Route, public PublicDiskstream
 	virtual void freeze_me (InterThreadInfo&) = 0;
 	virtual void unfreeze () = 0;
 
-	/** @return true if the track can be bounced, or false otherwise.
+	/** Test if the track can be bounced with the given settings.
+	 * If sends/inserts/returns are present in the signal path or the given track
+	 * has no audio outputs bouncing is not possible.
+	 *
+	 * @param endpoint the processor to tap the signal off (or nil for the top)
+	 * @param include_endpoint include the given processor in the bounced audio.
+	 * @return true if the track can be bounced, or false otherwise.
 	 */
 	virtual bool bounceable (boost::shared_ptr<Processor> endpoint, bool include_endpoint) const = 0;
 	virtual boost::shared_ptr<Region> bounce (InterThreadInfo&) = 0;
-	virtual boost::shared_ptr<Region> bounce_range (framepos_t start, framepos_t end, InterThreadInfo&,
+
+	/** Bounce the given range to a new audio region.
+	 * @param start start time (in samples)
+	 * @param end end time (in samples)
+	 * @param itt asynchronous progress report and cancel
+	 * @param endpoint the processor to tap the signal off (or nil for the top)
+	 * @param include_endpoint include the given processor in the bounced audio.
+	 * @return a new audio region (or nil in case of error)
+	 */
+	virtual boost::shared_ptr<Region> bounce_range (framepos_t start, framepos_t end, InterThreadInfo& itt,
 							boost::shared_ptr<Processor> endpoint, bool include_endpoint) = 0;
 	virtual int export_stuff (BufferSet& bufs, framepos_t start_frame, framecnt_t nframes,
 				  boost::shared_ptr<Processor> endpoint, bool include_endpoint, bool for_export, bool for_freeze) = 0;

libs/evoral/evoral/Event.hpp

@@ -92,6 +92,11 @@ public:
 
 	inline bool owns_buffer() const { return _owns_buf; }
 
+	/** set event data (e.g. midi data)
+	 * @param size number of bytes
+	 * @param buf raw 8bit data
+	 * @param own set to true if the buffer owns the data (copy, allocate/free) or false to reference previously allocated data.
+	 */
 	inline void set_buffer(uint32_t size, uint8_t* buf, bool own) {
 		if (_owns_buf) {
 			free(_buf);