Added Om aka Graph aka god knows what

git-svn-id: http://svn.drobilla.net/lad/grauph@9 a436a847-0d15-0410-975c-d299462d15a1

1 files changed, 159 insertions, 0 deletions

diff --git a/src/engine/LashDriver.cpp b/src/engine/LashDriver.cpp
new file mode 100644
index 00000000..f42f87f2
--- /dev/null
+++ b/src/engine/LashDriver.cpp
@@ -0,0 +1,159 @@
+/* This file is part of Om.  Copyright (C) 2006 Dave Robillard.
+ * 
+ * Om 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.
+ * 
+ * Om 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 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.,
+ * 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ */
+
+#include "LashDriver.h"
+#include "config.h"
+#include <iostream>
+#include <string>
+#include <cassert>
+#include "OmApp.h"
+
+using std::cerr; using std::cout; using std::endl;
+using std::string;
+
+namespace Om {
+	
+
+LashDriver::LashDriver(OmApp* app, lash_args_t* args)
+: m_app(app),
+  m_client(NULL),
+  m_alsa_client_id(0) // FIXME: appropriate sentinel?
+{
+	m_client = lash_init(args, PACKAGE_NAME,
+		/*LASH_Config_Data_Set|LASH_Config_File*/0, LASH_PROTOCOL(2, 0));
+	if (m_client == NULL) {
+		cerr << "[LashDriver] Failed to connect to LASH.  Session management will not function." << endl;
+	} else {
+		cout << "[LashDriver] Lash initialised" << endl;
+		lash_event_t* event = lash_event_new_with_type(LASH_Client_Name);
+		lash_event_set_string(event, "Om");
+		lash_send_event(m_client, event);			
+	}
+}
+
+
+/** Set the Jack client name to be sent to LASH.
+ * The name isn't actually send until restore_finished() is called.
+ */
+void
+LashDriver::set_jack_client_name(const char* name)
+{
+	m_jack_client_name = name;
+	lash_jack_client_name(m_client, m_jack_client_name.c_str());
+}
+
+
+/** Set the Alsa client ID to be sent to LASH.
+ * The name isn't actually send until restore_finished() is called.
+ */
+void
+LashDriver::set_alsa_client_id(int id)
+{
+	m_alsa_client_id = id;
+	lash_alsa_client_id(m_client, m_alsa_client_id);
+}
+
+
+/** Notify LASH of our port names so it can restore connections.
+ * The Alsa client ID and Jack client name MUST be set before calling
+ * this function.
+ */
+void
+LashDriver::restore_finished()
+{
+	assert(m_jack_client_name != "");
+	assert(m_alsa_client_id != 0);
+
+	cerr << "LASH RESTORE FINISHED " << m_jack_client_name << "  -  " << m_alsa_client_id << endl;
+
+	lash_jack_client_name(m_client, m_jack_client_name.c_str());
+	lash_alsa_client_id(m_client, m_alsa_client_id);
+}
+
+
+void
+LashDriver::process_events()
+{
+	assert(m_client != NULL);
+	
+	lash_event_t*  ev = NULL;
+	lash_config_t* conf = NULL;
+
+	// Process events
+	while ((ev = lash_get_event(m_client)) != NULL) {
+		handle_event(ev);
+		lash_event_destroy(ev);	
+	}
+
+	// Process configs
+	while ((conf = lash_get_config(m_client)) != NULL) {
+		handle_config(conf);
+		lash_config_destroy(conf);	
+	}
+}
+
+
+void
+LashDriver::handle_event(lash_event_t* ev)
+{
+	LASH_Event_Type type  = lash_event_get_type(ev);
+	const char*     c_str = lash_event_get_string(ev);
+	string          str   = (c_str == NULL) ? "" : c_str;
+	
+	//cout << "[LashDriver] LASH Event.  Type = " << type << ", string = " << str << "**********" << endl;
+	
+	/*if (type == LASH_Save_File) {
+		//cout << "[LashDriver] LASH Save File - " << str << endl;
+		m_app->store_window_location();
+		m_app->state_manager()->save(str.append("/locations"));
+		lash_send_event(m_client, lash_event_new_with_type(LASH_Save_File));
+	} else if (type == LASH_Restore_File) {
+		//cout << "[LashDriver] LASH Restore File - " << str << endl;
+		m_app->state_manager()->load(str.append("/locations"));
+		m_app->update_state();
+		lash_send_event(m_client, lash_event_new_with_type(LASH_Restore_File));
+	} else if (type == LASH_Save_Data_Set) {
+		//cout << "[LashDriver] LASH Save Data Set - " << endl;
+		
+		// Tell LASH we're done
+		lash_send_event(m_client, lash_event_new_with_type(LASH_Save_Data_Set));
+	} else*/
+	if (type == LASH_Quit) {
+		//stop_thread();
+		m_client = NULL;
+		m_app->quit();
+	} else {
+		cerr << "[LashDriver] WARNING: Unhandled lash event, type " << static_cast<int>(type) << endl;
+	}
+}
+
+
+void
+LashDriver::handle_config(lash_config_t* conf)
+{
+	const char*    key      = NULL;
+	const void*    val      = NULL;
+	size_t         val_size = 0;
+
+	//cout << "[LashDriver] LASH Config.  Key = " << key << endl;
+
+	key      = lash_config_get_key(conf);
+	val      = lash_config_get_value(conf);
+	val_size = lash_config_get_value_size(conf);
+}
+
+
+} // namespace Om