Scratch commit to make SVN allow moving files (broken revision).

git-svn-id: http://svn.drobilla.net/lad/raul@262 a436a847-0d15-0410-975c-d299462d15a1

1 files changed, 109 insertions, 0 deletions

diff --git a/raul/JackDriver.h b/raul/JackDriver.h
new file mode 100644
index 0000000..52e22cd
--- /dev/null
+++ b/raul/JackDriver.h
@@ -0,0 +1,109 @@
+/* This file is part of Patchage.  Copyright (C) 2005 Dave Robillard.
+ * 
+ * Patchage 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.
+ * 
+ * Patchage 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
+ */
+
+#ifndef RAUL_JACKDRIVER_H
+#define RAUL_JACKDRIVER_H
+
+#include <iostream>
+#include <string>
+#include <jack/jack.h>
+#include <jack/statistics.h>
+
+using std::string;
+
+
+/** Handles all externally driven functionality, registering ports etc.
+ *
+ * Jack callbacks and connect methods and things like that live here.
+ * Right now just for jack ports, but that will change...
+ */
+class JackDriver
+{
+public:
+	JackDriver();
+	virtual ~JackDriver();
+	
+	void attach(const string& client_name);
+	void detach();
+
+	bool is_attached() const { return (m_client != NULL); }
+	bool is_realtime() const { return m_client && jack_is_realtime(m_client); }
+	
+	void start_transport() { jack_transport_start(m_client); }
+	void stop_transport()  { jack_transport_stop(m_client); }
+	
+	void rewind_transport() {
+		jack_position_t zero;
+		zero.frame = 0;
+		zero.valid = (jack_position_bits_t)0;
+		jack_transport_reposition(m_client, &zero);
+	}
+	
+	jack_nframes_t buffer_size();
+	bool           set_buffer_size(jack_nframes_t size);
+
+	inline float sample_rate() { return jack_get_sample_rate(m_client); }
+
+	inline size_t xruns() { return m_xruns; }
+	void reset_xruns();
+
+	inline float max_delay() { return jack_get_max_delayed_usecs(m_client); }
+	inline void reset_delay() { jack_reset_max_delayed_usecs(m_client); }
+
+protected:
+	/** Process callback.  Derived classes should do all audio processing here. */
+	virtual void on_process(jack_nframes_t nframes) {}
+
+	/** Graph order change callback. */
+	virtual void on_graph_order_changed() {}
+
+	/** Buffer size changed callback.
+	 * At the time this is called, buffer_size() will still return the old
+	 * size.  Immediately afterwards, it will be set to the new value.
+	 */
+	virtual void on_buffer_size_changed(jack_nframes_t size) {}
+
+	virtual void on_xrun()                                   {}
+	virtual void on_shutdown()                               {}
+	virtual void on_error()                                  {}
+
+private:
+
+	static void error_cb(const char* msg);
+
+	void destroy_all_ports();
+
+	void update_time();
+
+
+
+	static void jack_port_registration_cb(jack_port_id_t port_id, int registered, void* me);
+	static int  jack_graph_order_cb(void* me);
+	static int  jack_buffer_size_cb(jack_nframes_t buffer_size, void* me);
+	static int  jack_xrun_cb(void* me);
+	static void jack_shutdown_cb(void* me);
+
+	jack_client_t* m_client;
+
+	bool            m_is_activated;
+	jack_position_t m_last_pos;
+	jack_nframes_t  m_buffer_size;
+	size_t          m_xruns;
+	float           m_xrun_delay;
+};
+
+
+#endif // RAUL_JACKDRIVER_H