/*
- Copyright (C) 1998-99 Paul Barton-Davis
+ Copyright (C) 1998-2010 Paul Barton-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
along with this program; if not, write to the Free Software
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
- $Id$
*/
-#ifndef __libmidi_port_h__
-#define __libmidi_port_h__
+#ifndef __libmidi_port_base_h__
+#define __libmidi_port_base_h__
#include <string>
+#include <iostream>
-#include <sigc++/sigc++.h>
+#include "pbd/xml++.h"
+#include "pbd/crossthread.h"
+#include "pbd/signals.h"
+#include "pbd/ringbuffer.h"
-#include <midi++/types.h>
-#include <midi++/parser.h>
+#include "midi++/types.h"
+#include "midi++/parser.h"
namespace MIDI {
class Channel;
class PortRequest;
-class Port : public sigc::trackable {
+class Port {
public:
- enum Type {
- Unknown,
- ALSA_RawMidi,
- ALSA_Sequencer,
- CoreMidi_MidiPort,
- Null,
- FIFO,
+ enum Flags {
+ IsInput = JackPortIsInput,
+ IsOutput = JackPortIsOutput,
};
-
-
- Port (PortRequest &);
+
+ Port (std::string const &, Flags);
+ Port (const XMLNode&);
virtual ~Port ();
- /* Direct I/O */
-
- virtual int write (byte *msg, size_t msglen) = 0;
- virtual int read (byte *buf, size_t max) = 0;
-
- /* slowdown i/o to a loop of single byte emissions
- interspersed with a busy loop of 10000 * this value.
+ virtual XMLNode& get_state () const;
+ virtual void set_state (const XMLNode&);
+
+ /** Write a message to port.
+ * @param msg Raw MIDI message to send
+ * @param msglen Size of @a msg
+ * @param timestamp Time stamp in frames of this message (relative to cycle start)
+ * @return number of bytes successfully written
+ */
+ virtual int write (const byte *msg, size_t msglen, timestamp_t timestamp) = 0;
+
+ /** Read raw bytes from a port.
+ * @param buf memory to store read data in
+ * @param bufsize size of @a buf
+ * @return number of bytes successfully read, negative if error
+ */
+ virtual int read (byte *buf, size_t bufsize) = 0;
+
+ /** block until the output FIFO used by non-process threads
+ * is empty, checking every @a check_interval_usecs usecs
+ * for current status. Not to be called by a thread that
+ * executes any part of a JACK process callback (will
+ * simply return immediately in that situation).
+ */
+ virtual void drain (int /* check_interval_usecs */) {}
+
+ /** Write a message to port.
+ * @return true on success.
+ * FIXME: describe semantics here
+ */
+ int midimsg (byte *msg, size_t len, timestamp_t timestamp) {
+ return !(write (msg, len, timestamp) == (int) len);
+ }
- This may be ignored by a particular instance
- of this virtual class. See FD_MidiPort for an
- example of where it used.
- */
+ virtual void parse (framecnt_t timestamp) = 0;
- void set_slowdown (size_t n) { slowdown = n; }
+ bool clock (timestamp_t timestamp);
/* select(2)/poll(2)-based I/O */
- virtual int selectable() const = 0;
-
- //void selector_read_callback (Select::Selectable *, Select::Condition);
+ /** Get the file descriptor for port.
+ * @return File descriptor, or -1 if not selectable.
+ */
+ virtual int selectable () const = 0;
- static void xforms_read_callback (int cond, int fd, void *ptr);
- static void gtk_read_callback (void *ptr, int fd, int cond);
-
- static void write_callback (byte *msg, unsigned int len, void *);
-
Channel *channel (channel_t chn) {
return _channel[chn&0x7F];
}
- Parser *input() { return input_parser; }
- Parser *output() { return output_parser; }
-
- void iostat (int *written, int *read,
- const size_t **in_counts,
- const size_t **out_counts) {
-
- *written = bytes_written;
- *read = bytes_read;
- if (input_parser) {
- *in_counts = input_parser->message_counts();
- } else {
- *in_counts = 0;
- }
- if (output_parser) {
- *out_counts = output_parser->message_counts();
- } else {
- *out_counts = 0;
- }
+ Parser* parser () {
+ return _parser;
}
- int midimsg (byte *msg, size_t len) {
- return !(write (msg, len) == (int) len);
- }
+ const char *name () const { return _tagname.c_str(); }
+ bool ok () const { return _ok; }
- int three_byte_msg (byte a, byte b, byte c) {
- byte msg[3];
+ virtual bool centrally_parsed() const;
+ void set_centrally_parsed (bool yn) { _centrally_parsed = yn; }
- msg[0] = a;
- msg[1] = b;
- msg[2] = c;
+ bool receives_input () const {
+ return _flags == IsInput;
+ }
- return !(write (msg, 3) == 3);
- }
-
- int clock ();
-
- const char *device () const { return _devname.c_str(); }
- const char *name () const { return _tagname.c_str(); }
- Type type () const { return _type; }
- int mode () const { return _mode; }
- bool ok () const { return _ok; }
- size_t number () const { return _number; }
+ bool sends_output () const {
+ return _flags == IsOutput;
+ }
+
+ struct Descriptor {
+ std::string tag;
+ Flags flags;
+
+ Descriptor (const XMLNode&);
+ XMLNode& get_state();
+ };
+
+ static std::string state_node_name;
protected:
- bool _ok;
- Type _type;
- std::string _devname;
- std::string _tagname;
- int _mode;
- size_t _number;
- Channel *_channel[16];
- sigc::connection thru_connection;
- unsigned int bytes_written;
- unsigned int bytes_read;
- Parser *input_parser;
- Parser *output_parser;
- size_t slowdown;
-
- private:
- static size_t nports;
+ bool _ok;
+ std::string _tagname;
+ Channel* _channel[16];
+ Parser* _parser;
+ Flags _flags;
+ bool _centrally_parsed;
+
+ void init (std::string const &, Flags);
+};
+
+struct PortSet {
+ PortSet (std::string str) : owner (str) { }
+
+ std::string owner;
+ std::list<XMLNode> ports;
};
-}; /* namespace MIDI */
+std::ostream & operator << (std::ostream& os, const Port& port);
-#endif // __libmidi_port_h__
+} // namespace MIDI
+#endif // __libmidi_port_base_h__
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