99 lines
2.3 KiB
C++
99 lines
2.3 KiB
C++
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//*****************************************//
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// qmidiin.cpp
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// by Gary Scavone, 2003-2004.
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//
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// Simple program to test MIDI input and
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// retrieval from the queue.
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//
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//*****************************************//
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#include <iostream>
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#include <cstdlib>
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#include <signal.h>
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#include "RtMidi.h"
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// Platform-dependent sleep routines.
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#if defined(WIN32)
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#include <windows.h>
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#define SLEEP( milliseconds ) Sleep( (DWORD) milliseconds )
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#else // Unix variants
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#include <unistd.h>
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#define SLEEP( milliseconds ) usleep( (unsigned long) (milliseconds * 1000.0) )
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#endif
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bool done;
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static void finish( int /*ignore*/ ){ done = true; }
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void usage( void ) {
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// Error function in case of incorrect command-line
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// argument specifications.
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std::cout << "\nusage: qmidiin <port>\n";
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std::cout << " where port = the device to use (first / default = 0).\n\n";
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exit( 0 );
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}
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int main( int argc, char *argv[] )
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{
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RtMidiIn *midiin = 0;
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std::vector<unsigned char> message;
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int nBytes, i;
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double stamp;
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// Minimal command-line check.
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if ( argc > 2 ) usage();
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// RtMidiIn constructor
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try {
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midiin = new RtMidiIn();
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}
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catch ( RtMidiError &error ) {
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error.printMessage();
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exit( EXIT_FAILURE );
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}
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// Check available ports vs. specified.
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unsigned int port = 0;
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unsigned int nPorts = midiin->getPortCount();
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if ( argc == 2 ) port = (unsigned int) atoi( argv[1] );
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if ( port >= nPorts ) {
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delete midiin;
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std::cout << "Invalid port specifier!\n";
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usage();
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}
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try {
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midiin->openPort( port );
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}
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catch ( RtMidiError &error ) {
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error.printMessage();
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goto cleanup;
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}
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// Don't ignore sysex, timing, or active sensing messages.
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midiin->ignoreTypes( false, false, false );
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// Install an interrupt handler function.
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done = false;
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(void) signal(SIGINT, finish);
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// Periodically check input queue.
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std::cout << "Reading MIDI from port " << midiin->getPortName() << " ... quit with Ctrl-C.\n";
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while ( !done ) {
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stamp = midiin->getMessage( &message );
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nBytes = message.size();
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for ( i=0; i<nBytes; i++ )
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std::cout << "Byte " << i << " = " << (int)message[i] << ", ";
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if ( nBytes > 0 )
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std::cout << "stamp = " << stamp << std::endl;
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// Sleep for 10 milliseconds.
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SLEEP( 10 );
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}
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// Clean up
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cleanup:
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delete midiin;
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return 0;
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}
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