Jack2  1.9.9
JackCoreMidiVirtualOutputPort.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 "JackCoreMidiVirtualOutputPort.h"
25 
27 
28 JackCoreMidiVirtualOutputPort::
29 JackCoreMidiVirtualOutputPort(const char *alias_name, const char *client_name,
30  const char *driver_name, int index,
31  MIDIClientRef client, double time_ratio,
32  size_t max_bytes,
33  size_t max_messages):
34  JackCoreMidiOutputPort(time_ratio, max_bytes,
35  max_messages)
36 {
37  std::stringstream stream;
38  stream << "virtual" << (index + 1);
39  CFStringRef name = CFStringCreateWithCString(0, stream.str().c_str(),
40  CFStringGetSystemEncoding());
41  if (! name) {
42  throw std::bad_alloc();
43  }
44  MIDIEndpointRef source;
45  OSStatus status = MIDISourceCreate(client, name, &source);
46  CFRelease(name);
47  if (status != noErr) {
48  throw std::runtime_error(GetMacOSErrorString(status));
49  }
50  Initialize(alias_name, client_name, driver_name, index, source, 0);
51 }
52 
53 JackCoreMidiVirtualOutputPort::~JackCoreMidiVirtualOutputPort()
54 {
55  OSStatus status = MIDIEndpointDispose(GetEndpoint());
56  if (status != noErr) {
57  WriteMacOSError("JackCoreMidiVirtualOutputPort [destructor]",
58  "MIDIEndpointDispose", status);
59  }
60 }
61 
62 bool
63 JackCoreMidiVirtualOutputPort::SendPacketList(MIDIPacketList *packet_list)
64 {
65  OSStatus status = MIDIReceived(endpoint, packet_list);
66  bool result = status == noErr;
67  if (! result) {
68  WriteMacOSError("JackCoreMidiVirtualOutputPort::SendPacketList",
69  "MIDIReceived", status);
70  }
71  return result;
72 }