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//=============================================================================
// MusE
// Linux Music Editor
// $Id:$
//
// Copyright (C) 2002-2006 by Werner Schweer and others
//
// This program is free software; you can redistribute it and/or modify
// it under the terms of the GNU General Public License version 2.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with this program; if not, write to the Free Software
// Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
//=============================================================================
#include "all.h"
#include <stdio.h>
#include <getopt.h>
#include <dlfcn.h>
#include "config.h"
#include "libsynti/mess.h"
#include "jackaudio.h"
#include <jack/midiport.h>
static const char* versionString = "1.0";
static bool debug = false;
static int sampleRate;
static int segmentSize;
static Mess* mess;
static const int MAX_OUTPORTS = 8;
static jack_port_t* inPort;
static jack_port_t* outPorts[MAX_OUTPORTS];
static float* outBuffer[MAX_OUTPORTS];
//---------------------------------------------------------
// processAudio
// JACK callback
//---------------------------------------------------------
static int processAudio(jack_nframes_t nFrames, void*)
{
int nch = mess->channels();
for (int i = 0; i < nch; ++i) {
outBuffer[i] = (float*)jack_port_get_buffer(outPorts[i], nFrames);
#ifdef JACK107
jack_midi_clear_buffer(outBuffer[i]);
#endif
#ifdef JACK103
jack_midi_clear_buffer(outBuffer[i], nFrames);
#endif
// memset(outBuffer[i], 0, sizeof(float) * nFrames);
}
while(mess->eventsPending())
mess->processEvent(mess->receiveEvent());
void* midi = jack_port_get_buffer(inPort, nFrames);
#ifdef JACK107
int n = jack_midi_get_event_count(midi);
#endif
#ifdef JACK103
int n = jack_midi_get_event_count(midi, nFrames);
#endif
unsigned offset = 0;
for (int i = 0; i < n; ++i) {
jack_midi_event_t event;
#ifdef JACK107
jack_midi_event_get(&event, midi, i);
#endif
#ifdef JACK103
jack_midi_event_get(&event, midi, i, nFrames);
#endif
mess->process(outBuffer, offset, event.time - offset);
offset = event.time;
MidiEvent e;
e.setType(event.buffer[0] & 0xf0);
e.setChannel(event.buffer[0] & 0xf);
e.setA(event.buffer[1]);
e.setB(event.buffer[2]);
mess->processEvent(e);
}
if (offset < nFrames)
mess->process(outBuffer, offset, nFrames - offset);
return 0;
}
//---------------------------------------------------------
// jackError
//---------------------------------------------------------
static void jackError(const char* s)
{
fprintf(stderr, "JACK ERROR: %s\n", s);
}
//---------------------------------------------------------
// noJackError
//---------------------------------------------------------
static void noJackError(const char* /* s */)
{
}
//---------------------------------------------------------
// printVersion
//---------------------------------------------------------
static void printVersion(const char* programName)
{
printf("%s: Version %s\n", programName, versionString);
}
//---------------------------------------------------------
// usage
//---------------------------------------------------------
static void usage(const char* programName)
{
fprintf(stderr, "%s: usage <options> MusE-synthesizer-plugin-name\n"
" options: -v print version\n"
" -d debug mode on\n",
programName
);
}
//---------------------------------------------------------
// main
//---------------------------------------------------------
int main(int argc, char* argv[])
{
new QApplication(argc, argv);
int c;
while ((c = getopt(argc, argv, "vd")) != EOF) {
switch (c) {
case 'v':
printVersion(argv[0]);
return 0;
case 'd':
debug = true;
break;
default:
usage(argv[0]);
return -1;
}
}
argc -= optind;
if (argc != 1) {
usage(argv[0]);
return -1;
}
//
// load synthesizer plugin
//
QDir pluginDir(INSTPREFIX "/lib/" INSTALL_NAME "/synthi");
if (!pluginDir.exists()) {
fprintf(stderr, "plugin directory <%s> not found\n",
pluginDir.path().toLocal8Bit().data());
return -2;
}
QString pluginName(argv[1]);
if (!pluginName.endsWith(".so", Qt::CaseInsensitive))
pluginName += ".so";
if (!pluginDir.exists(pluginName)) {
fprintf(stderr, "plugin <%s> in directory <%s> not found\n",
pluginName.toLocal8Bit().data(),
pluginDir.path().toLocal8Bit().data());
return -3;
}
QString path = pluginDir.filePath(pluginName);
void* handle = dlopen(path.toLocal8Bit().data(), RTLD_LAZY);
if (handle == 0) {
fprintf(stderr, "%s: dlopen(%s) failed: %s\n",
argv[0], path.toLocal8Bit().data(), dlerror());
return -4;
}
typedef const MESS* (*MESS_Function)();
MESS_Function msynth = (MESS_Function)dlsym(handle, "mess_descriptor");
if (!msynth) {
fprintf(stderr,
"%s: Unable to find msynth_descriptor() function in plugin\n"
"Are you sure this is a MESS plugin file?\n%s",
argv[0], dlerror());
return -5;
}
const MESS* descr = msynth();
if (descr == 0) {
fprintf(stderr, "%s: instantiate: no MESS descr found\n",
argv[0]);
return 6;
}
//
// initialize JACK
//
if (debug) {
fprintf(stderr, "init JACK audio\n");
jack_set_error_function(jackError);
}
else
jack_set_error_function(noJackError);
jack_client_t* client;
int i = 0;
QString instanceName;
QString s(pluginName.left(pluginName.size()-3));
s += "-%1";
static const int MAX_INSTANCES = 100;
for (i = 0; i < MAX_INSTANCES; ++i) {
instanceName = s.arg(i);
const char* jackIdString = strdup(instanceName.toLocal8Bit().data());
client = jack_client_new(jackIdString);
if (client)
break;
}
if (i == MAX_INSTANCES) {
fprintf(stderr, "%s: too many instances of the synth! (>%d)\n",
argv[0], MAX_INSTANCES);
return -7;
}
jack_set_error_function(jackError);
if (debug)
fprintf(stderr, "init Jack Audio: register device\n");
// jackAudio = new JackAudio(client, jackIdString);
if (debug)
fprintf(stderr, "init Jack Audio: register client\n");
jack_set_process_callback(client, processAudio, 0);
// jack_set_sync_callback(_client, processSync, 0);
// jack_on_shutdown(_client, processShutdown, 0);
// jack_set_buffer_size_callback(_client, bufsize_callback, 0);
// jack_set_sample_rate_callback(_client, srate_callback, 0);
// jack_set_port_registration_callback(_client, registration_callback, 0);
// jack_set_graph_order_callback(_client, graph_callback, 0);
// jack_set_freewheel_callback (_client, freewheel_callback, 0);
// jack_set_timebase_callback(_client, 0, timebase_callback, 0);
sampleRate = jack_get_sample_rate(client);
segmentSize = jack_get_buffer_size(client);
//
// instantiate Synthesizer
//
mess = descr->instantiate(sampleRate, instanceName.toLocal8Bit().data());
if (mess == 0) {
fprintf(stderr, "%s: instantiate failed\n",
argv[0]);
}
int channels = mess->channels();
if (channels > MAX_OUTPORTS) {
channels = MAX_OUTPORTS;
fprintf(stderr, "%s: too many outports %d > %d\n",
argv[0], channels, MAX_OUTPORTS);
}
for (int i = 0; i < channels; ++i) {
char portName[64];
snprintf(portName, 64, "audioOut-%d", i);
outPorts[i] = jack_port_register(client, portName,
JACK_DEFAULT_AUDIO_TYPE, JackPortIsOutput, 0);
}
inPort = jack_port_register(client, "midiIn",
JACK_DEFAULT_MIDI_TYPE, JackPortIsInput, 0);
if (mess->hasGui())
mess->showGui(true);
jack_activate(client);
qApp->exec();
}
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