Jack2  1.9.9
JackCoreMidiVirtualInputPort.cpp
1 /*
2 Copyright (C) 2011 Devin Anderson
3 
4 This program is free software; you can redistribute it and/or modify
5 it under the terms of the GNU General Public License as published by
6 the Free Software Foundation; either version 2 of the License, or
7 (at your option) any later version.
8 
9 This program is distributed in the hope that it will be useful,
10 but WITHOUT ANY WARRANTY; without even the implied warranty of
11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 GNU General Public License for more details.
13 
14 You should have received a copy of the GNU General Public License
15 along with this program; if not, write to the Free Software
16 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
17 
18 */
19 
20 #include <sstream>
21 #include <stdexcept>
22 
23 #include "JackCoreMidiUtil.h"
24 #include "JackCoreMidiVirtualInputPort.h"
25 
27 
29 // Static callbacks
31 
32 void
33 JackCoreMidiVirtualInputPort::
34 HandleInputEvent(const MIDIPacketList *packet_list, void *port,
35  void */*src_ref*/)
36 {
37  ((JackCoreMidiVirtualInputPort *) port)->ProcessCoreMidi(packet_list);
38 }
39 
41 // Class
43 
44 JackCoreMidiVirtualInputPort::
45 JackCoreMidiVirtualInputPort(const char *alias_name, const char *client_name,
46  const char *driver_name, int index,
47  MIDIClientRef client, double time_ratio,
48  size_t max_bytes, size_t max_messages):
49  JackCoreMidiInputPort(time_ratio, max_bytes, max_messages)
50 {
51  std::stringstream stream;
52  stream << "virtual" << (index + 1);
53  CFStringRef name = CFStringCreateWithCString(0, stream.str().c_str(),
54  CFStringGetSystemEncoding());
55  if (! name) {
56  throw std::bad_alloc();
57  }
58  MIDIEndpointRef destination;
59  OSStatus status = MIDIDestinationCreate(client, name, HandleInputEvent,
60  this, &destination);
61  CFRelease(name);
62  if (status != noErr) {
63  throw std::runtime_error(GetMacOSErrorString(status));
64  }
65  Initialize(alias_name, client_name, driver_name, index, destination);
66 }
67 
68 JackCoreMidiVirtualInputPort::~JackCoreMidiVirtualInputPort()
69 {
70  OSStatus status = MIDIEndpointDispose(GetEndpoint());
71  if (status != noErr) {
72  WriteMacOSError("JackCoreMidiVirtualInputPort [destructor]",
73  "MIDIEndpointDispose", status);
74  }
75 }