annotate data/osc/OSCQueue.cpp @ 1429:48e9f538e6e9

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author Chris Cannam
date Thu, 01 Mar 2018 18:02:22 +0000
parents 6b847a59d908
children 70e172e6cc59
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Chris@320 1 /* -*- c-basic-offset: 4 indent-tabs-mode: nil -*- vi:set ts=8 sts=4 sw=4: */
Chris@320 2
Chris@320 3 /*
Chris@320 4 Sonic Visualiser
Chris@320 5 An audio file viewer and annotation editor.
Chris@320 6 Centre for Digital Music, Queen Mary, University of London.
Chris@320 7
Chris@320 8 This program is free software; you can redistribute it and/or
Chris@320 9 modify it under the terms of the GNU General Public License as
Chris@320 10 published by the Free Software Foundation; either version 2 of the
Chris@320 11 License, or (at your option) any later version. See the file
Chris@320 12 COPYING included with this distribution for more information.
Chris@320 13 */
Chris@320 14
Chris@320 15 /*
Chris@320 16 This is a modified version of a source file from the
Chris@320 17 Rosegarden MIDI and audio sequencer and notation editor.
Chris@320 18 This file copyright 2000-2006 Chris Cannam and QMUL.
Chris@320 19 */
Chris@320 20
Chris@320 21 #include "OSCQueue.h"
Chris@320 22
Chris@408 23 #include "base/Profiler.h"
Chris@408 24
Chris@320 25 #include <iostream>
Chris@320 26
Chris@320 27 #define OSC_MESSAGE_QUEUE_SIZE 1023
Chris@320 28
Chris@320 29 #ifdef HAVE_LIBLO
Chris@320 30
Chris@1218 31 #include <unistd.h>
Chris@1218 32
Chris@320 33 void
Chris@320 34 OSCQueue::oscError(int num, const char *msg, const char *path)
Chris@320 35 {
Chris@843 36 cerr << "ERROR: OSCQueue::oscError: liblo server error " << num
Chris@1429 37 << " in path " << path << ": " << msg << endl;
Chris@320 38 }
Chris@320 39
Chris@320 40 int
Chris@320 41 OSCQueue::oscMessageHandler(const char *path, const char *types, lo_arg **argv,
Chris@320 42 int argc, lo_message, void *user_data)
Chris@320 43 {
Chris@320 44 OSCQueue *queue = static_cast<OSCQueue *>(user_data);
Chris@320 45
Chris@320 46 int target;
Chris@320 47 int targetData;
Chris@320 48 QString method;
Chris@320 49
Chris@320 50 if (!queue->parseOSCPath(path, target, targetData, method)) {
Chris@1429 51 return 1;
Chris@320 52 }
Chris@320 53
Chris@320 54 OSCMessage message;
Chris@320 55 message.setTarget(target);
Chris@320 56 message.setTargetData(targetData);
Chris@320 57 message.setMethod(method);
Chris@320 58
Chris@320 59 int i = 0;
Chris@320 60
Chris@320 61 while (types && i < argc && types[i]) {
Chris@320 62
Chris@320 63 char type = types[i];
Chris@320 64 lo_arg *arg = argv[i];
Chris@320 65
Chris@320 66 switch (type) {
Chris@320 67 case 'i': message.addArg(arg->i); break;
Chris@320 68 // This conversion fails to compile in 64-bit environments
Chris@320 69 // at present, and we don't use the h type anyway so we
Chris@320 70 // can safely omit it
Chris@320 71 // case 'h': message.addArg(arg->h); break;
Chris@320 72 case 'f': message.addArg(arg->f); break;
Chris@320 73 case 'd': message.addArg(arg->d); break;
Chris@320 74 case 'c': message.addArg(arg->c); break;
Chris@320 75 case 't': message.addArg(arg->i); break;
Chris@320 76 case 's': message.addArg(&arg->s); break;
Chris@843 77 default: cerr << "WARNING: OSCQueue::oscMessageHandler: "
Chris@320 78 << "Unsupported OSC type '" << type << "'"
Chris@843 79 << endl;
Chris@320 80 break;
Chris@320 81 }
Chris@320 82
Chris@1429 83 ++i;
Chris@320 84 }
Chris@320 85
Chris@320 86 queue->postMessage(message);
Chris@320 87 return 0;
Chris@320 88 }
Chris@320 89
Chris@320 90 #endif
Chris@320 91
Chris@320 92 OSCQueue::OSCQueue() :
Chris@320 93 #ifdef HAVE_LIBLO
Chris@320 94 m_thread(0),
Chris@320 95 #endif
Chris@320 96 m_buffer(OSC_MESSAGE_QUEUE_SIZE)
Chris@320 97 {
Chris@408 98 Profiler profiler("OSCQueue::OSCQueue");
Chris@408 99
Chris@320 100 #ifdef HAVE_LIBLO
Chris@320 101 m_thread = lo_server_thread_new(NULL, oscError);
Chris@320 102
Chris@320 103 lo_server_thread_add_method(m_thread, NULL, NULL,
Chris@320 104 oscMessageHandler, this);
Chris@320 105
Chris@320 106 lo_server_thread_start(m_thread);
Chris@320 107
Chris@843 108 cout << "OSCQueue::OSCQueue: Base OSC URL is "
Chris@843 109 << lo_server_thread_get_url(m_thread) << endl;
Chris@320 110 #endif
Chris@320 111 }
Chris@320 112
Chris@320 113 OSCQueue::~OSCQueue()
Chris@320 114 {
Chris@320 115 #ifdef HAVE_LIBLO
Chris@320 116 if (m_thread) {
Chris@320 117 lo_server_thread_stop(m_thread);
Chris@320 118 }
Chris@320 119 #endif
Chris@320 120
Chris@320 121 while (m_buffer.getReadSpace() > 0) {
Chris@320 122 delete m_buffer.readOne();
Chris@320 123 }
Chris@320 124 }
Chris@320 125
Chris@320 126 bool
Chris@320 127 OSCQueue::isOK() const
Chris@320 128 {
Chris@320 129 #ifdef HAVE_LIBLO
Chris@320 130 return (m_thread != 0);
Chris@320 131 #else
Chris@320 132 return false;
Chris@320 133 #endif
Chris@320 134 }
Chris@320 135
Chris@320 136 QString
Chris@320 137 OSCQueue::getOSCURL() const
Chris@320 138 {
Chris@320 139 QString url = "";
Chris@320 140 #ifdef HAVE_LIBLO
Chris@320 141 url = lo_server_thread_get_url(m_thread);
Chris@320 142 #endif
Chris@320 143 return url;
Chris@320 144 }
Chris@320 145
Chris@929 146 int
Chris@320 147 OSCQueue::getMessagesAvailable() const
Chris@320 148 {
Chris@320 149 return m_buffer.getReadSpace();
Chris@320 150 }
Chris@320 151
Chris@320 152 OSCMessage
Chris@320 153 OSCQueue::readMessage()
Chris@320 154 {
Chris@320 155 OSCMessage *message = m_buffer.readOne();
Chris@320 156 OSCMessage rmessage = *message;
Chris@320 157 delete message;
Chris@320 158 return rmessage;
Chris@320 159 }
Chris@320 160
Chris@320 161 void
Chris@320 162 OSCQueue::postMessage(OSCMessage message)
Chris@320 163 {
Chris@320 164 int count = 0, max = 5;
Chris@320 165 while (m_buffer.getWriteSpace() == 0) {
Chris@320 166 if (count == max) {
Chris@843 167 cerr << "ERROR: OSCQueue::postMessage: OSC message queue is full and not clearing -- abandoning incoming message" << endl;
Chris@320 168 return;
Chris@320 169 }
Chris@843 170 cerr << "WARNING: OSCQueue::postMessage: OSC message queue (capacity " << m_buffer.getSize() << " is full!" << endl;
Chris@690 171 SVDEBUG << "Waiting for something to be processed" << endl;
Chris@320 172 #ifdef _WIN32
Chris@320 173 Sleep(1);
Chris@320 174 #else
Chris@320 175 sleep(1);
Chris@320 176 #endif
Chris@320 177 count++;
Chris@320 178 }
Chris@320 179
Chris@320 180 OSCMessage *mp = new OSCMessage(message);
Chris@320 181 m_buffer.write(&mp, 1);
Chris@690 182 SVDEBUG << "OSCQueue::postMessage: Posted OSC message: target "
Chris@320 183 << message.getTarget() << ", target data " << message.getTargetData()
Chris@687 184 << ", method " << message.getMethod() << endl;
Chris@320 185 emit messagesAvailable();
Chris@320 186 }
Chris@320 187
Chris@320 188 bool
Chris@320 189 OSCQueue::parseOSCPath(QString path, int &target, int &targetData,
Chris@320 190 QString &method)
Chris@320 191 {
Chris@320 192 while (path.startsWith("/")) {
Chris@1429 193 path = path.right(path.length()-1);
Chris@320 194 }
Chris@320 195
Chris@320 196 int i = 0;
Chris@320 197
Chris@320 198 bool ok = false;
Chris@320 199 target = path.section('/', i, i).toInt(&ok);
Chris@320 200
Chris@320 201 if (!ok) {
Chris@320 202 target = 0;
Chris@320 203 } else {
Chris@320 204 ++i;
Chris@320 205 targetData = path.section('/', i, i).toInt(&ok);
Chris@320 206 if (!ok) {
Chris@320 207 targetData = 0;
Chris@320 208 } else {
Chris@320 209 ++i;
Chris@320 210 }
Chris@320 211 }
Chris@320 212
Chris@320 213 method = path.section('/', i, -1);
Chris@320 214
Chris@320 215 if (method.contains('/')) {
Chris@843 216 cerr << "ERROR: OSCQueue::parseOSCPath: malformed path \""
Chris@686 217 << path << "\" (should be target/data/method or "
Chris@320 218 << "target/method or method, where target and data "
Chris@843 219 << "are numeric)" << endl;
Chris@320 220 return false;
Chris@320 221 }
Chris@320 222
Chris@690 223 SVDEBUG << "OSCQueue::parseOSCPath: good path \"" << path << "\"" << endl;
Chris@320 224
Chris@320 225 return true;
Chris@320 226 }
Chris@320 227