Jack2  1.9.10
JackCoreMidiVirtualInputPort.cpp
00001 /*
00002 Copyright (C) 2011 Devin Anderson
00003 
00004 This program is free software; you can redistribute it and/or modify
00005 it under the terms of the GNU General Public License as published by
00006 the Free Software Foundation; either version 2 of the License, or
00007 (at your option) any later version.
00008 
00009 This program is distributed in the hope that it will be useful,
00010 but WITHOUT ANY WARRANTY; without even the implied warranty of
00011 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
00012 GNU General Public License for more details.
00013 
00014 You should have received a copy of the GNU General Public License
00015 along with this program; if not, write to the Free Software
00016 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
00017 
00018 */
00019 
00020 #include <sstream>
00021 #include <stdexcept>
00022 
00023 #include "JackError.h"
00024 #include "JackCoreMidiUtil.h"
00025 #include "JackCoreMidiVirtualInputPort.h"
00026 
00027 using Jack::JackCoreMidiVirtualInputPort;
00028 
00030 // Static callbacks
00032 
00033 void
00034 JackCoreMidiVirtualInputPort::
00035 HandleInputEvent(const MIDIPacketList *packet_list, void *port,
00036                  void */*src_ref*/)
00037 {
00038     ((JackCoreMidiVirtualInputPort *) port)->ProcessCoreMidi(packet_list);
00039 }
00040 
00042 // Class
00044 
00045 JackCoreMidiVirtualInputPort::
00046 JackCoreMidiVirtualInputPort(const char *alias_name, const char *client_name,
00047                              const char *driver_name, int base_index, int index,
00048                              MIDIClientRef client, double time_ratio,
00049                              size_t max_bytes, size_t max_messages):
00050     JackCoreMidiInputPort(time_ratio, max_bytes, max_messages)
00051 {
00052     std::stringstream stream;
00053     stream << "virtual" << (base_index + 1);
00054     CFStringRef name = CFStringCreateWithCString(0, stream.str().c_str(),
00055                                                CFStringGetSystemEncoding());
00056     if (! name) {
00057         throw std::bad_alloc();
00058     }
00059     MIDIEndpointRef destination;
00060     OSStatus status = MIDIDestinationCreate(client, name, HandleInputEvent,
00061                                             this, &destination);
00062      
00063     /*                                                                            
00064     SInt32 value;                                        
00065     status = MIDIObjectGetIntegerProperty(destination, kMIDIPropertyUniqueID, &value);
00066     if (status == noErr) {
00067         jack_info("kMIDIPropertyUniqueID %d", value);
00068     }
00069     */                                  
00070                                             
00071     CFRelease(name);
00072     if (status != noErr) {
00073         throw std::runtime_error(GetMacOSErrorString(status));
00074     }
00075     Initialize(alias_name, client_name, driver_name, index, destination);
00076     
00077     // Keep in global list (that keeps growing during the whole session...)
00078     endpoint_list.insert(endpoint);
00079 }
00080 
00081 JackCoreMidiVirtualInputPort::~JackCoreMidiVirtualInputPort()
00082 {
00083     OSStatus status = MIDIEndpointDispose(GetEndpoint());
00084     if (status != noErr) {
00085         WriteMacOSError("JackCoreMidiVirtualInputPort [destructor]",
00086                         "MIDIEndpointDispose", status);
00087     }
00088 }