Пример #1
0
/* alsa_rawmidi_init:
 *  Inits the ALSA RawMIDI interface.
 */
static int alsa_rawmidi_init(int input, int voices)
{
   int ret = -1, err;
   char tmp1[128], tmp2[128], temp[256];
#if ALLEGRO_ALSA_VERSION == 9
   snd_rawmidi_info_t *info;
   const char *device = NULL;
#else  /* ALLEGRO_ALSA_VERSION == 5 */
   snd_rawmidi_info_t info;
   int card = -1;
   int device = -1;
#endif

   if (input) {
      ret = -1;
   }
   else {
#if ALLEGRO_ALSA_VERSION == 9
      device = get_config_string(uconvert_ascii("sound", tmp1),
				 uconvert_ascii("alsa_rawmidi_device", tmp2),
				 "default");

      err = snd_rawmidi_open(NULL, &rawmidi_handle, device, 0);
#else  /* ALLEGRO_ALSA_VERSION == 5 */
      card = get_config_int(uconvert_ascii("sound", tmp1),
			    uconvert_ascii("alsa_rawmidi_card", tmp2),
			    snd_defaults_rawmidi_card());

      device = get_config_int(uconvert_ascii("sound", tmp1),
			     uconvert_ascii("alsa_rawmidi_device", tmp2),
			     snd_defaults_rawmidi_device());

      err = snd_rawmidi_open(&rawmidi_handle, card, device, SND_RAWMIDI_OPEN_OUTPUT_APPEND);
#endif
      if (err) {
	 snprintf(temp, sizeof(temp), "Could not open card/rawmidi device: %s", snd_strerror(err));
	 ustrzcpy(allegro_error, ALLEGRO_ERROR_SIZE, get_config_text(temp));
	 ret = -1;
      }

      ret = 0;
   }

   if (rawmidi_handle) {
#if ALLEGRO_ALSA_VERSION == 9
      snd_rawmidi_nonblock(rawmidi_handle, 0);
      snd_rawmidi_info_malloc(&info);
      snd_rawmidi_info(rawmidi_handle, info);
      _al_sane_strncpy(alsa_rawmidi_desc, snd_rawmidi_info_get_name(info), sizeof(alsa_rawmidi_desc));
#else  /* ALLEGRO_ALSA_VERSION == 5 */
      snd_rawmidi_block_mode(rawmidi_handle, 1);
      snd_rawmidi_info(rawmidi_handle, &info);
      _al_sane_strncpy(alsa_rawmidi_desc, info.name, sizeof(alsa_rawmidi_desc));
#endif
      midi_alsa.desc = alsa_rawmidi_desc;
      alsa_rawmidi_errors = 0;
   }

   return ret;
}
Пример #2
0
static int midoalsa_open(snd_rawmidi_t **handle_p, const char *dev_name)
{
    int err;
    err = snd_rawmidi_open(NULL, handle_p, dev_name,
			   SND_RAWMIDI_NONBLOCK | SND_RAWMIDI_SYNC);
    if (err) {
	S_printf("%s: unable to open %s for writing: %s\n",
		 midoalsa_name, dev_name, snd_strerror(err));
	return 0;
    }
    /* NONBLOCK flag is needed only so that open() not to block forever */
    snd_rawmidi_nonblock(*handle_p, 0);
    return 1;
}
Пример #3
0
/**
 *  Opens MIDI device. This function modifies global input and output variables.
 *
 *  \return FALSE on success, TRUE on error.
 **/
gboolean open_device()
{
    int err;

    err = snd_rawmidi_open(&input, &output, device_port, SND_RAWMIDI_SYNC);
    if (err) {
        fprintf(stderr, "snd_rawmidi_open %s failed: %d\n", device_port, err);
        return TRUE;
    }

    err = snd_rawmidi_nonblock(output, 0);
    if (err) {
        fprintf(stderr, "snd_rawmidi_nonblock failed: %d\n", err);
        return TRUE;
    }

    snd_rawmidi_read(input, NULL, 0); /* trigger reading */

    return FALSE;
}
Пример #4
0
static PyObject *pyrm_open(PyObject *self, PyObject *args) {
    int status;
    const char *port;

    if(MidiIn!=NULL)
	return midiexcept("midi already openend", 0);

    if(!PyArg_ParseTuple(args, "s", &port))
	return NULL;

    status = snd_rawmidi_open(&MidiIn, &MidiOut, port, 
			      SND_RAWMIDI_SYNC|SND_RAWMIDI_NONBLOCK);
    if(status<0)
	return midiexcept2("error opening midi port '%s': %s", port, status);

    status = snd_rawmidi_nonblock(MidiOut, 0); /* set blocking mode */
    if(status<0)
	return midiexcept("error setting up midi: %s", status);

    Py_RETURN_NONE;
}
Пример #5
0
MidiAlsaRaw::MidiAlsaRaw() :
	MidiClientRaw(),
	m_inputp( &m_input ),
	m_outputp( &m_output ),
	m_quit( false )
{
	int err;
	if( ( err = snd_rawmidi_open( m_inputp, m_outputp,
					probeDevice().toLatin1().constData(),
								0 ) ) < 0 )
	{
		printf( "cannot open MIDI-device: %s\n", snd_strerror( err ) );
		return;
	}

	snd_rawmidi_read( m_input, NULL, 0 );

	snd_rawmidi_nonblock( m_input, 1 );
	m_npfds = snd_rawmidi_poll_descriptors_count( m_input );
	m_pfds = new pollfd[m_npfds];
	snd_rawmidi_poll_descriptors( m_input, m_pfds, m_npfds );

	start( QThread::LowPriority );
}
Пример #6
0
int main(int argc, char** argv)
{
	int i, j, k, opos, ipos, patsize;
	int err;
	int verbose = 0;
	snd_rawmidi_t *handle_in = NULL, *handle_out = NULL;
	unsigned char ibuf[512], obuf[512];
	char *iname = "hw:0,0", *oname = "hw:0,0";
	struct timeval start, end;
	long long diff;
	snd_rawmidi_status_t *istat, *ostat;
	
	for (i = 1 ; i<argc ; i++) {
		if (argv[i][0]=='-') {
			if (!strcmp(argv[i], "--help")) {
				usage();
				return 0;
			}
			switch (argv[i][1]) {
				case 'h':
					usage();
					return 0;
				case 'v':
					verbose = 1;
					break;
				case 'i':
					if (i + 1 < argc)
						iname = argv[++i];
					break;
				case 'o':
					if (i + 1 < argc)
						oname = argv[++i];
					break;
			}			
		}
	}

	if (iname == NULL)
		iname = oname;
	if (oname == NULL)
		oname = iname;

	if (verbose) {
		fprintf(stderr, "Using: \n");
		fprintf(stderr, "  Input: %s  Output: %s\n", iname, oname);
	}
	
	err = snd_rawmidi_open(&handle_in, NULL, iname, SND_RAWMIDI_NONBLOCK);
	if (err) {
		fprintf(stderr,"snd_rawmidi_open %s failed: %d\n",iname,err);
		exit(EXIT_FAILURE);
	}

	err = snd_rawmidi_open(NULL, &handle_out, oname, 0);
	if (err) {
		fprintf(stderr,"snd_rawmidi_open %s failed: %d\n",oname,err);
		exit(EXIT_FAILURE);
	}

	signal(SIGINT, sighandler);

	i = snd_rawmidi_read(handle_in, ibuf, sizeof(ibuf));
	if (i > 0) {
		printf("Read ahead: %i\n", i);
		for (j = 0; j < i; j++)
			printf("%02x:", ibuf[j]);
		printf("\n");
		exit(EXIT_FAILURE);
	}

	snd_rawmidi_nonblock(handle_in, 0);

	patsize = writepattern(handle_out, obuf);
	gettimeofday(&start, NULL);
	patsize = writepattern(handle_out, obuf);

	k = ipos = opos = err = 0;
	while (!stop) {
		i = snd_rawmidi_read(handle_in, ibuf, sizeof(ibuf));
		for (j = 0; j < i; j++, ipos++)
			if (obuf[k] != ibuf[j]) {
				printf("ipos = %i, i[0x%x] != o[0x%x]\n", ipos, ibuf[j], obuf[k]);
				if (opos > 0)
					stop = 1;
			} else {
				printf("match success: ipos = %i, opos = %i [%i:0x%x]\n", ipos, opos, k, obuf[k]);
				k++; opos++;
				if (k >= patsize) {
					patsize = writepattern(handle_out, obuf);
					k = 0;
				}
			}
	}

	gettimeofday(&end, NULL);

	printf("End...\n");

	snd_rawmidi_status_alloca(&istat);
	snd_rawmidi_status_alloca(&ostat);
	err = snd_rawmidi_status(handle_in, istat);
	if (err < 0)
		fprintf(stderr, "input stream status error: %d\n", err);
	err = snd_rawmidi_status(handle_out, ostat);
	if (err < 0)
		fprintf(stderr, "output stream status error: %d\n", err);
	printf("input.status.avail = %zi\n", snd_rawmidi_status_get_avail(istat));
	printf("input.status.xruns = %zi\n", snd_rawmidi_status_get_xruns(istat));
	printf("output.status.avail = %zi\n", snd_rawmidi_status_get_avail(ostat));
	printf("output.status.xruns = %zi\n", snd_rawmidi_status_get_xruns(ostat));

	diff = timediff(end, start);
	printf("Time diff: %Liusec (%Li bytes/sec)\n", diff, ((long long)opos * 1000000) / diff);

	if (verbose) {
		fprintf(stderr,"Closing\n");
	}
	
	snd_rawmidi_drain(handle_in); 
	snd_rawmidi_close(handle_in);	
	snd_rawmidi_drain(handle_out); 
	snd_rawmidi_close(handle_out);	

	return 0;
}
/*
  direction has to be either SND_RAWMIDI_STREAM_INPUT or
  SND_RAWMIDI_STREAM_OUTPUT.
  Returns 0 on success. Otherwise, MIDI_OUT_OF_MEMORY, MIDI_INVALID_ARGUMENT
   or a negative ALSA error code is returned.
*/
INT32 openMidiDevice(snd_rawmidi_stream_t direction, INT32 deviceIndex,
                     MidiDeviceHandle** handle) {
    snd_rawmidi_t* native_handle;
    snd_midi_event_t* event_parser = NULL;
    int err;
    UINT32 deviceID;
    char devicename[100];
#ifdef ALSA_MIDI_USE_PLUGHW
    int usePlugHw = 1;
#else
    int usePlugHw = 0;
#endif

    TRACE0("> openMidiDevice()\n");

    (*handle) = (MidiDeviceHandle*) calloc(sizeof(MidiDeviceHandle), 1);
    if (!(*handle)) {
        ERROR0("ERROR: openDevice: out of memory\n");
        return MIDI_OUT_OF_MEMORY;
    }

    // TODO: iterate to get dev ID from index
    err = getMidiDeviceID(direction, deviceIndex, &deviceID);
    TRACE1("  openMidiDevice(): deviceID: %d\n", (int) deviceID);
    getDeviceStringFromDeviceID(devicename, deviceID,
                                usePlugHw, ALSA_RAWMIDI);
    TRACE1("  openMidiDevice(): deviceString: %s\n", devicename);

    // finally open the device
    if (direction == SND_RAWMIDI_STREAM_INPUT) {
        err = snd_rawmidi_open(&native_handle, NULL, devicename,
                               SND_RAWMIDI_NONBLOCK);
    } else if (direction == SND_RAWMIDI_STREAM_OUTPUT) {
        err = snd_rawmidi_open(NULL, &native_handle, devicename,
                               SND_RAWMIDI_NONBLOCK);
    } else {
        ERROR0("  ERROR: openMidiDevice(): direction is neither SND_RAWMIDI_STREAM_INPUT nor SND_RAWMIDI_STREAM_OUTPUT\n");
        err = MIDI_INVALID_ARGUMENT;
    }
    if (err < 0) {
        ERROR1("<  ERROR: openMidiDevice(): snd_rawmidi_open() returned %d\n", err);
        free(*handle);
        (*handle) = NULL;
        return err;
    }
    /* We opened with non-blocking behaviour to not get hung if the device
       is used by a different process. Writing, however, should
       be blocking. So we change it here. */
    if (direction == SND_RAWMIDI_STREAM_OUTPUT) {
        err = snd_rawmidi_nonblock(native_handle, 0);
        if (err < 0) {
            ERROR1("  ERROR: openMidiDevice(): snd_rawmidi_nonblock() returned %d\n", err);
            snd_rawmidi_close(native_handle);
            free(*handle);
            (*handle) = NULL;
            return err;
        }
    }
    if (direction == SND_RAWMIDI_STREAM_INPUT) {
        err = snd_midi_event_new(EVENT_PARSER_BUFSIZE, &event_parser);
        if (err < 0) {
            ERROR1("  ERROR: openMidiDevice(): snd_midi_event_new() returned %d\n", err);
            snd_rawmidi_close(native_handle);
            free(*handle);
            (*handle) = NULL;
            return err;
        }
    }

    (*handle)->deviceHandle = (void*) native_handle;
    (*handle)->startTime = getTimeInMicroseconds();
    (*handle)->platformData = event_parser;
    TRACE0("< openMidiDevice(): succeeded\n");
    return err;
}