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