Rudimentary post-processing of exported files.

Export format contains a string to be passed to system() after expanding
%1, %2, & %3 via string_compose() to the full path & filename, containing
directory, and basename respectively. No error-checking or any niceties
like that - real programmers will of course always type the command
correctly, and know to watch Ardour's standard output for the results...

gtk2_ardour/export_format_dialog.cc

@@ -52,6 +52,7 @@ ExportFormatDialog::ExportFormatDialog (FormatPtr format, bool new_dialog) :
   silence_end_clock ("silence_end", true, "", true, false, true),
 
   upload_checkbox(_("Upload to Soundcloud")),
+  command_label(_("Command to run post-export (%1=full path & filename, %2=directory, %3=basename):")),
 
   format_table (3, 4),
   compatibility_label (_("Compatibility"), Gtk::ALIGN_LEFT),
@@ -116,6 +117,9 @@ ExportFormatDialog::ExportFormatDialog (FormatPtr format, bool new_dialog) :
 	silence_table.attach (silence_end_clock, 2, 3, 2, 3);
 
 	get_vbox()->pack_start (upload_checkbox, false, false);
+	get_vbox()->pack_start (command_label, false, false);
+	get_vbox()->pack_start (command_entry, false, false);
+
 	/* Format table */
 
 	init_format_table();
@@ -146,6 +150,7 @@ ExportFormatDialog::ExportFormatDialog (FormatPtr format, bool new_dialog) :
 	with_cue.signal_toggled().connect (sigc::mem_fun (*this, &ExportFormatDialog::update_with_cue));
 	with_toc.signal_toggled().connect (sigc::mem_fun (*this, &ExportFormatDialog::update_with_toc));
 	upload_checkbox.signal_toggled().connect (sigc::mem_fun (*this, &ExportFormatDialog::update_upload));
+	command_entry.signal_changed().connect (sigc::mem_fun (*this, &ExportFormatDialog::update_command));
 
 	cue_toc_vbox.pack_start (with_cue, false, false);
 	cue_toc_vbox.pack_start (with_toc, false, false);
@@ -301,6 +306,7 @@ ExportFormatDialog::load_state (FormatPtr spec)
 
 	tag_checkbox.set_active (spec->tag());
 	upload_checkbox.set_active (spec->upload());
+	command_entry.set_text (spec->command());
 }
 
 void
@@ -728,6 +734,13 @@ ExportFormatDialog::update_upload ()
 	manager.select_upload (upload_checkbox.get_active());
 }
 
+void
+ExportFormatDialog::update_command ()
+{
+	manager.set_command (command_entry.get_text());
+}
+
+void
 ExportFormatDialog::update_description()
 {
 	std::string text = ": " + format->description(false);

gtk2_ardour/export_format_dialog.h

@@ -178,6 +178,8 @@ class ExportFormatDialog : public ArdourDialog, public PBD::ScopedConnectionList
 	/* Upload */
 	
 	Gtk::CheckButton upload_checkbox;
+	Gtk::Label       command_label;
+	Gtk::Entry       command_entry;
 
 	/* Format table */
 
@@ -312,6 +314,7 @@ class ExportFormatDialog : public ArdourDialog, public PBD::ScopedConnectionList
 	void update_with_toc ();
 	void update_with_cue ();
 	void update_upload ();
+	void update_command ();
 
 	Gtk::TreeView sample_format_view;
 	Gtk::TreeView dither_type_view;

libs/ardour/ardour/export_format_manager.h

@@ -101,6 +101,7 @@ class ExportFormatManager : public PBD::ScopedConnectionList
 	void select_with_cue (bool);
 	void select_with_toc (bool);
 	void select_upload (bool);
+	void set_command (std::string);
 	void select_src_quality (ExportFormatBase::SRCQuality value);
 	void select_trim_beginning (bool value);
 	void select_silence_beginning (AnyTime const & time);

libs/ardour/ardour/export_format_specification.h

@@ -96,6 +96,7 @@ class ExportFormatSpecification : public ExportFormatBase {
 	void set_with_cue (bool yn) { _with_cue = yn; }
 	void set_with_toc (bool yn) { _with_toc = yn; }
 	void set_upload (bool yn) { _upload = yn; }
+	void set_command (std::string command) { _command = command; }
 
 	void set_silence_beginning (AnyTime const & value) { _silence_beginning = value; }
 	void set_silence_end (AnyTime const & value) { _silence_end = value; }
@@ -126,6 +127,7 @@ class ExportFormatSpecification : public ExportFormatBase {
 	bool with_toc() const { return _with_toc; }
 	bool with_cue() const { return _with_cue; }
 	bool upload() const { return _upload; }
+	std::string command() const { return _command; }
 
 	bool tag () const { return _tag && supports_tagging; }
 
@@ -176,6 +178,7 @@ class ExportFormatSpecification : public ExportFormatBase {
 	bool            _with_toc;
 	bool            _with_cue;
 	bool		_upload;
+	std::string	_command;
 
 	/* serialization helpers */
 

libs/ardour/export_format_manager.cc

@@ -300,6 +300,14 @@ ExportFormatManager::select_upload (bool value)
 	check_for_description_change ();
 }
 
+void
+ExportFormatManager::set_command (std::string command)
+{
+	current_selection->set_command (command);
+	check_for_description_change ();
+}
+
+void
 ExportFormatManager::select_trim_beginning (bool value)
 {
 	current_selection->set_trim_beginning (value);

libs/ardour/export_format_specification.cc

@@ -171,6 +171,7 @@ ExportFormatSpecification::ExportFormatSpecification (Session & s)
 	, _with_toc (false)
 	, _with_cue (false)
 	, _upload (false)
+	, _command ("")
 {
 	format_ids.insert (F_None);
 	endiannesses.insert (E_FileDefault);
@@ -246,6 +247,7 @@ ExportFormatSpecification::get_state ()
 	root->add_property ("with-cue", _with_cue ? "true" : "false");
 	root->add_property ("with-toc", _with_toc ? "true" : "false");
 	root->add_property ("upload", _upload ? "true" : "false");
+	root->add_property ("command", _command);
 
 	node = root->add_child ("Encoding");
 	node->add_property ("id", enum_2_string (format_id()));
@@ -329,6 +331,12 @@ ExportFormatSpecification::set_state (const XMLNode & root)
 		_upload = false;
 	}
 	
+	if ((prop = root.property ("command"))) {
+		_command = prop->value();
+	} else {
+		_command = "";
+	}
+
 	/* Encoding and SRC */
 
 	if ((child = root.child ("Encoding"))) {
@@ -601,6 +609,11 @@ ExportFormatSpecification::description (bool include_name)
 	if (_upload) {
 		components.push_back ("Upload");
 	}
+
+	if (!_command.empty()) {
+		components.push_back ("+");
+	}
+
 	string desc;
 	if (include_name) {
 		desc = _name + ": ";

libs/ardour/export_handler.cc

@@ -293,6 +293,16 @@ ExportHandler::finish_timespan ()
 			export_cd_marker_file (current_timespan, fmt, filepath, CDMarkerTOC);
 		}
 
+		if (!fmt->command().empty()) {
+			std::string command = string_compose(fmt->command(),
+					filepath,
+					Glib::path_get_dirname(filepath),
+					PBD::basename_nosuffix(filepath)
+					);
+			std::cerr << "running command: " << command << "..." << std::endl;
+			system(command.c_str());
+		}
+
 		if (fmt->upload()) {
 			SoundcloudUploader *soundcloud_uploader = new SoundcloudUploader;
 			std::string token = soundcloud_uploader->Get_Auth_Token(upload_username, upload_password);