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render.cpp
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render.cpp
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#include <Bela.h>
/*
____ _____ _ _
| __ )| ____| | / \
| _ \| _| | | / _ \
| |_) | |___| |___ / ___ \
|____/|_____|_____/_/ \_\
The platform for ultra-low latency audio and sensor processing
http://bela.io
A project of the Augmented Instruments Laboratory within the
Centre for Digital Music at Queen Mary University of London.
http://www.eecs.qmul.ac.uk/~andrewm
(c) 2016 Augmented Instruments Laboratory: Andrew McPherson,
Astrid Bin, Liam Donovan, Christian Heinrichs, Robert Jack,
Giulio Moro, Laurel Pardue, Victor Zappi. All rights reserved.
The Bela software is distributed under the GNU Lesser General Public License
(LGPL 3.0), available here: https://www.gnu.org/licenses/lgpl-3.0.txt
*/
/*
* USING A CUSTOM RENDER.CPP FILE FOR PUREDATA PATCHES - LIBPD
* ===========================================================
* || ||
* || OPEN THE ENCLOSED _main.pd PATCH FOR MORE INFORMATION ||
* || ----------------------------------------------------- ||
* ===========================================================
*/
#include <Bela.h>
#define BELA_LIBPD_GUI
#include <DigitalChannelManager.h>
#include <stdio.h>
#define PD_THREADED_IO
#include <libpd/z_libpd.h>
extern "C" {
#include <libpd/s_stuff.h>
};
#include <libraries/Midi/Midi.h>
#include <libraries/Scope/Scope.h>
#include <string>
#include <sstream>
#include <string.h>
#define ENABLE_TRILL
#if (defined(BELA_LIBPD_GUI) || defined(ENABLE_TRILL))
#include <libraries/Pipe/Pipe.h>
template <typename T>
int getIdxFromId(const char* id, std::vector<std::pair<std::string,T>>& db)
{
for(unsigned int n = 0; n < db.size(); ++n)
{
if(0 == strcmp(id, db[n].first.c_str()))
return n;
}
return -1;
}
#endif // BELA_LIBPD_GUI || ENABLE_TRILL
#ifdef ENABLE_TRILL
#include <tuple>
#include <libraries/Trill/Trill.h>
AuxiliaryTask gTrillTask;
Pipe gTrillPipe;
static std::vector<std::string> gTrillAcks;
static std::vector<std::pair<std::string,Trill*>> gTouchSensors;
// how often to read the cap sensors inputs.
float touchSensorSleepInterval = 0.007;
void readTouchSensors(void*)
{
for(unsigned int n = 0; n < gTouchSensors.size(); ++n)
{
Trill& touchSensor = *gTouchSensors[n].second;
int ret;
const Trill::Device type = touchSensor.deviceType();
if(Trill::NONE == type)
ret = 1;
else
ret = touchSensor.readI2C();
if(!ret)
{
gTrillPipe.writeNonRt(n);
}
}
}
#endif // ENABLE_TRILL
#ifdef BELA_LIBPD_GUI
#include <libraries/Gui/Gui.h>
Pipe gGuiPipe;
Gui gui;
struct bufferDescription
{
std::string name;
int id;
int size;
};
static std::vector<struct bufferDescription> gGuiDataBuffers;
static std::vector<std::string> gGuiControlBuffers;
struct guiControlMessageHeader
{
uint32_t size;
uint32_t type;
uint32_t id;
};
bool guiControlDataCallback(JSONObject& root, void* arg)
{
int ret = true;
for(unsigned int n = 0; n < gGuiControlBuffers.size(); ++n)
{
const auto& b = gGuiControlBuffers[n];
std::wstring key = JSON::s2ws(b);
if (root.end() != root.find(key))
{
JSONValue* found = root[key];
struct guiControlMessageHeader header;
header.id = n;
char* array;
if(found->IsString())
{
std::string value = JSON::ws2s(found->AsString());
header.type = 's';
header.size = value.size();
array = (char*)alloca(header.size);
memcpy(array, value.c_str(), header.size);
} else if(found->IsNumber())
{
float value = found->AsNumber();
header.type = 'f';
header.size = sizeof(value);
array = (char*)alloca(header.size);
memcpy(array, &value, header.size);
} else {
continue;
}
// do two separate reads: the pipe is datagram-based
// so it would be impossible to receive partial messages
// at the other end
gGuiPipe.writeNonRt(header);
gGuiPipe.writeNonRt(&array[0], header.size);
// we have successully parsed this message, so the
// default parser shouldn't when we return
// note: in practice there may be times when we'd want
// to have the default parser handle this message
// (e.g.: when an "event" field is also present), but
// for now we ignore them
ret = false;
continue;
}
}
return ret;
}
#endif // BELA_LIBPD_GUI
enum { minFirstDigitalChannel = 10 };
static unsigned int gAnalogChannelsInUse;
static unsigned int gDigitalChannelsInUse;
static unsigned int gScopeChannelsInUse = 4;
static unsigned int gLibpdBlockSize;
static unsigned int gChannelsInUse;
//static const unsigned int gFirstAudioChannel = 0;
static unsigned int gFirstAnalogInChannel;
static unsigned int gFirstAnalogOutChannel;
static unsigned int gFirstDigitalChannel;
static unsigned int gLibpdDigitalChannelOffset;
static unsigned int gFirstScopeChannel;
void Bela_userSettings(BelaInitSettings *settings)
{
settings->uniformSampleRate = 1;
settings->interleave = 0;
settings->analogOutputsPersist = 0;
}
float* gInBuf;
float* gOutBuf;
#define PARSE_MIDI
static std::vector<Midi*> midi;
std::vector<std::string> gMidiPortNames;
int gMidiVerbose = 1;
const int kMidiVerbosePrintLevel = 1;
void dumpMidi()
{
if(midi.size() == 0)
{
printf("No MIDI device enabled\n");
return;
}
printf("The following MIDI devices are enabled:\n");
printf("%4s%20s %3s %3s %s\n",
"Num",
"Name",
"In",
"Out",
"Pd channels"
);
for(unsigned int n = 0; n < midi.size(); ++n)
{
printf("[%2d]%20s %3s %3s (%d-%d)\n",
n,
gMidiPortNames[n].c_str(),
midi[n]->isInputEnabled() ? "x" : "_",
midi[n]->isOutputEnabled() ? "x" : "_",
n * 16 + 1,
n * 16 + 16
);
}
}
Midi* openMidiDevice(std::string name, bool verboseSuccess = false, bool verboseError = false)
{
Midi* newMidi;
newMidi = new Midi();
newMidi->readFrom(name.c_str());
newMidi->writeTo(name.c_str());
#ifdef PARSE_MIDI
newMidi->enableParser(true);
#else
newMidi->enableParser(false);
#endif /* PARSE_MIDI */
if(newMidi->isOutputEnabled())
{
if(verboseSuccess)
printf("Opened MIDI device %s as output\n", name.c_str());
}
if(newMidi->isInputEnabled())
{
if(verboseSuccess)
printf("Opened MIDI device %s as input\n", name.c_str());
}
if(!newMidi->isInputEnabled() && !newMidi->isOutputEnabled())
{
if(verboseError)
fprintf(stderr, "Failed to open MIDI device %s\n", name.c_str());
return nullptr;
} else {
return newMidi;
}
}
static unsigned int getPortChannel(int* channel){
unsigned int port = 0;
while(*channel >= 16){
*channel -= 16;
port += 1;
}
return port;
}
void Bela_MidiOutNoteOn(int channel, int pitch, int velocity) {
unsigned int port = getPortChannel(&channel);
if(gMidiVerbose >= kMidiVerbosePrintLevel)
rt_printf("noteout _ port: %d, channel: %d, pitch: %d, velocity %d\n", port, channel, pitch, velocity);
port < midi.size() && midi[port]->writeNoteOn(channel, pitch, velocity);
}
void Bela_MidiOutControlChange(int channel, int controller, int value) {
unsigned int port = getPortChannel(&channel);
if(gMidiVerbose >= kMidiVerbosePrintLevel)
rt_printf("ctlout _ port: %d, channel: %d, controller: %d, value: %d\n", port, channel, controller, value);
port < midi.size() && midi[port]->writeControlChange(channel, controller, value);
}
void Bela_MidiOutProgramChange(int channel, int program) {
unsigned int port = getPortChannel(&channel);
if(gMidiVerbose >= kMidiVerbosePrintLevel)
rt_printf("pgmout _ port: %d, channel: %d, program: %d\n", port, channel, program);
port < midi.size() && midi[port]->writeProgramChange(channel, program);
}
void Bela_MidiOutPitchBend(int channel, int value) {
unsigned int port = getPortChannel(&channel);
if(gMidiVerbose >= kMidiVerbosePrintLevel)
rt_printf("bendout _ port: %d, channel: %d, value: %d\n", port, channel, value);
port < midi.size() && midi[port]->writePitchBend(channel, value);
}
void Bela_MidiOutAftertouch(int channel, int pressure){
unsigned int port = getPortChannel(&channel);
if(gMidiVerbose >= kMidiVerbosePrintLevel)
rt_printf("touchout _ port: %d, channel: %d, pressure: %d\n", port, channel, pressure);
port < midi.size() && midi[port]->writeChannelPressure(channel, pressure);
}
void Bela_MidiOutPolyAftertouch(int channel, int pitch, int pressure){
unsigned int port = getPortChannel(&channel);
if(gMidiVerbose >= kMidiVerbosePrintLevel)
rt_printf("polytouchout _ port: %d, channel: %d, pitch: %d, pressure: %d\n", port, channel, pitch, pressure);
port < midi.size() && midi[port]->writePolyphonicKeyPressure(channel, pitch, pressure);
}
void Bela_MidiOutByte(int port, int byte){
if(gMidiVerbose >= kMidiVerbosePrintLevel)
rt_printf("port: %d, byte: %d\n", port, byte);
if(port > (int)midi.size()){
// if the port is out of range, redirect to the first port.
rt_fprintf(stderr, "Port out of range, using port 0 instead\n");
port = 0;
}
port < (int)midi.size() && midi[port]->writeOutput(byte);
}
void Bela_printHook(const char *received){
rt_printf("%s", received);
}
static DigitalChannelManager dcm;
void sendDigitalMessage(bool state, unsigned int delay, void* receiverName){
libpd_float((const char*)receiverName, (float)state);
// rt_printf("%s: %d\n", (char*)receiverName, state);
}
#ifdef ENABLE_TRILL
void setTrillPrintError()
{
rt_fprintf(stderr, "bela_setTrill format is wrong. Should be:\n"
"[mode <sensor_id> <prescaler_value>(\n"
" or\n"
"[threshold <sensor_id> <threshold_value>(\n"
" or\n"
"[prescaler <sensor_id> <prescaler_value>(\n");
}
#endif // ENABLE_TRILL
void Bela_listHook(const char *source, int argc, t_atom *argv)
{
#ifdef BELA_LIBPD_GUI
if(0 == strcmp(source, "bela_guiOut"))
{
if(!libpd_is_float(&argv[0]))
{
rt_fprintf(stderr, "Wrong format for bela_gui, the first element should be a float\n");
return;
}
unsigned int bufNum = libpd_get_float(&argv[1]);
if(libpd_is_float(&argv[1])) // if the first element is a float, we send an array of floats
{
float buf[argc - 1];
for(int n = 1; n < argc; ++n)
{
t_atom *a = &argv[n];
if(!libpd_is_float(a))
{
rt_fprintf(stderr, "Wrong format for bela_gui\n"); // this should never happen, because then the selector would've not been "float"
return;
}
buf[n - 1] = libpd_get_float(a);
}
gui.sendBuffer(bufNum, buf, argc - 1);
return;
} else { // otherwise we send each element of the list separately
for(int n = 1; n < argc; ++n)
{
t_atom *a = &argv[n];
if (libpd_is_float(a)) {
float x = libpd_get_float(a);
gui.sendBuffer(bufNum, x);
} else if (libpd_is_symbol(a)) {
const char *s = libpd_get_symbol(a);
gui.sendBuffer(bufNum, s, strlen(s)); // TODO: should it be strlen(s)+1?
}
}
}
return;
}
#endif // BELA_LIBPD_GUI
}
void Bela_messageHook(const char *source, const char *symbol, int argc, t_atom *argv){
if(strcmp(source, "bela_setMidi") == 0)
{
if(0 == strcmp("verbose", symbol))
{
if(1 != argc || !libpd_is_float(argv))
{
rt_fprintf(stderr, "Wrong format for bela_setMidi, expected: [verbose <n>(\n");
} else {
gMidiVerbose = libpd_get_float(argv);
rt_printf("MIDI verbose: %d\n", gMidiVerbose);
}
return;
}
int num[3] = {0, 0, 0};
for(int n = 0; n < argc && n < 3; ++n)
{
if(!libpd_is_float(&argv[n]))
{
fprintf(stderr, "Wrong format for bela_setMidi, expected:[hw 1 0 0(");
return;
}
num[n] = libpd_get_float(&argv[n]);
}
std::ostringstream deviceName;
deviceName << symbol << ":" << num[0] << "," << num[1] << "," << num[2];
printf("Adding Midi device: %s\n", deviceName.str().c_str());
Midi* newMidi = openMidiDevice(deviceName.str(), false, true);
if(newMidi)
{
midi.push_back(newMidi);
gMidiPortNames.push_back(deviceName.str());
}
dumpMidi();
return;
}
if(strcmp(source, "bela_setDigital") == 0){
// symbol is the direction, argv[0] is the channel, argv[1] (optional)
// is signal("sig" or "~") or message("message", default) rate
bool isMessageRate = true; // defaults to message rate
bool direction = 0; // initialize it just to avoid the compiler's warning
bool disable = false;
if(strcmp(symbol, "in") == 0){
direction = INPUT;
} else if(strcmp(symbol, "out") == 0){
direction = OUTPUT;
} else if(strcmp(symbol, "disable") == 0){
disable = true;
} else {
return;
}
if(argc == 0){
return;
} else if (libpd_is_float(&argv[0]) == false){
return;
}
int channel = libpd_get_float(&argv[0]) - gLibpdDigitalChannelOffset;
if(disable == true){
dcm.unmanage(channel);
return;
}
if(argc >= 2){
t_atom* a = &argv[1];
if(libpd_is_symbol(a)){
const char *s = libpd_get_symbol(a);
if(strcmp(s, "~") == 0 || strncmp(s, "sig", 3) == 0){
isMessageRate = false;
}
}
}
dcm.manage(channel, direction, isMessageRate);
return;
}
#ifdef BELA_LIBPD_GUI
if(0 == strcmp(source, "bela_setGui"))
{
if(0 == strcmp(symbol, "new"))
{
if(
argc < 2
|| !libpd_is_symbol(argv)
|| !libpd_is_symbol(argv + 1)
)
{
return;
}
const char* mode = libpd_get_symbol(argv);
const char* name = libpd_get_symbol(argv + 1);
if(0 == strcmp(mode, "control"))
{
gGuiControlBuffers.emplace_back(name);
return;
}
if(0 == strcmp(mode, "array"))
{
// because of
// https://github.com/libpd/libpd/issues/274
// (again), we cannot access the arrays right
// here (as it would deadlock on loadbang), so
// we have to defer creation of the Gui
// buffers until render() runs
gGuiDataBuffers.emplace_back(bufferDescription{.name = name, .id = -1, .size = 0});
return;
}
return;
}
}
#endif // BELA_LIBPD_GUI
#ifdef ENABLE_TRILL
if(0 == strcmp(source, "bela_setTrill"))
{
if(0 == strcmp(symbol, "new"))
{
bool err = false;
uint8_t address = 0xff;
if(argc < 3)
err = true;
else if (!libpd_is_symbol(argv) // sensor_id
|| !libpd_is_float(argv + 1) // bus
|| !libpd_is_symbol(argv + 2) // device
)
err = true;
if(argc >= 4)
{
if(libpd_is_float(argv + 3))
address = libpd_get_float(argv + 3);
else
err = true;
}
if(err)
{
rt_fprintf(stderr, "bela_setTrill wrong format. Should be:\n"
"[new <sensor_id> <bus> <device> <address>(\n");
return;
}
const char* name = libpd_get_symbol(argv);
unsigned int bus = libpd_get_float(argv + 1);
const char* deviceString = libpd_get_symbol(argv + 2);
Trill::Device device = Trill::getDeviceFromName(deviceString);
Trill* trill = new Trill(bus, device, address);
if(Trill::NONE == trill->deviceType())
{
rt_fprintf(stderr, "Unable to create Trill %s device `%s` on bus %u at ", deviceString, name, bus);
if(128 < address)
rt_fprintf(stderr, "default address. ");
else
rt_fprintf(stderr, "address: %#x (%d). ", address, address);
rt_fprintf(stderr, "Is the device connected?\n");
return;
}
gTouchSensors.emplace_back(std::string(name), trill);
gTrillAcks.push_back(name);
//an ack is sent to Pd during the next audio callback because of https://github.com/libpd/libpd/issues/274
return;
}
if(argc < 1 || !libpd_is_symbol(argv))
{
rt_fprintf(stderr, "bela_setTrill: wrong format. It should be\n"
"[<command> <sensor_id> ...(");
return;
}
const char* sensorId = libpd_get_symbol(argv);
int idx = getIdxFromId(sensorId, gTouchSensors);
if(idx < 0)
{
rt_fprintf(stderr, "bela_setTrill sensor_id unknown: %s\n", sensorId);
return;
}
if(0 == strcmp(symbol, "updateBaseline"))
{
gTouchSensors[idx].second->updateBaseline();
return;
}
if(0 == strcmp(symbol, "mode"))
{
if(argc < 2
|| !libpd_is_symbol(argv)
|| !libpd_is_symbol(argv + 1)
) {
setTrillPrintError();
return;
}
const char* modeString = libpd_get_symbol(argv + 1);
Trill::Mode mode = Trill::getModeFromName(modeString);
gTouchSensors[idx].second->setMode(mode);
}
if(
0 == strcmp(symbol, "threshold")
|| 0 == strcmp(symbol, "prescaler")
)
{
if(
argc < 2
|| !libpd_is_symbol(argv)
|| !libpd_is_float(argv + 1)
) {
setTrillPrintError();
return;
}
float value = libpd_get_float(argv + 1);
if(0 == strcmp(symbol, "threshold"))
{
gTouchSensors[idx].second->setNoiseThreshold(value);
}
if(0 == strcmp(symbol, "prescaler"))
{
if(Trill::prescalerMax < value || 0 > value)
{
if(0 == value)
value = 0;
if(Trill::prescalerMax < value)
value = Trill::prescalerMax;
rt_printf("bela_setTrill prescaler value out of range, clipping to %u\n", value);
}
gTouchSensors[idx].second->setPrescaler(value);
}
return;
}
return;
}
#endif // ENABLE_TRILL
}
void Bela_floatHook(const char *source, float value){
// let's make this as optimized as possible for built-in digital Out parsing
// the built-in digital receivers are of the form "bela_digitalOutXX" where XX is between gLibpdDigitalChannelOffset and (gLibpdDigitalCHannelOffset+gDigitalChannelsInUse)
static int prefixLength = 15; // strlen("bela_digitalOut")
if(strncmp(source, "bela_digitalOut", prefixLength)==0){
if(source[prefixLength] != 0){ //the two ifs are used instead of if(strlen(source) >= prefixLength+2)
if(source[prefixLength + 1] != 0){
// quickly convert the suffix to integer, assuming they are numbers, avoiding to call atoi
int receiver = ((source[prefixLength] - 48) * 10);
receiver += (source[prefixLength+1] - 48);
unsigned int channel = receiver - gLibpdDigitalChannelOffset; // go back to the actual Bela digital channel number
if(channel < gDigitalChannelsInUse){ //number of digital channels
dcm.setValue(channel, value);
}
}
}
}
}
std::vector<std::string> gReceiverInputNames;
std::vector<std::string> gReceiverOutputNames;
void generateDigitalNames(unsigned int numDigitals, unsigned int libpdOffset, std::vector<std::string>& receiverInputNames, std::vector<std::string>& receiverOutputNames)
{
std::string inBaseString = "bela_digitalIn";
std::string outBaseString = "bela_digitalOut";
for(unsigned int i = 0; i<numDigitals; i++)
{
receiverInputNames.push_back(inBaseString + std::to_string(i+libpdOffset));
receiverOutputNames.push_back(outBaseString + std::to_string(i+libpdOffset));
}
}
void printDigitalNames(std::vector<std::string>& receiverInputNames, std::vector<std::string>& receiverOutputNames)
{
printf("DIGITAL INPUTS\n");
for(unsigned int i=0; i<gDigitalChannelsInUse; i++)
printf("%s\n", receiverInputNames[i].c_str());
printf("DIGITAL OUTPUTS\n");
for(unsigned int i=0; i<gDigitalChannelsInUse; i++)
printf("%s\n", receiverOutputNames[i].c_str());
}
static char multiplexerArray[] = {"bela_multiplexer"};
static int multiplexerArraySize = 0;
static bool pdMultiplexerActive = false;
#ifdef PD_THREADED_IO
void fdLoop(void* arg){
while(!Bela_stopRequested()){
if(!sys_doio(pd_this))
usleep(3000);
}
// bela.pd
libpd_float("didBelaStop",1);
}
#endif /* PD_THREADED_IO */
Scope scope;
float* gScopeOut;
void* gPatch;
bool gDigitalEnabled = 0;
bool setup(BelaContext *context, void *userData)
{
#ifdef BELA_LIBPD_GUI
gui.setup(context->projectName);
gui.setControlDataCallback(guiControlDataCallback, nullptr);
gGuiPipe.setup("guiControlPipe", 16384);
#endif // BELA_LIBPD_GUI
// Check Pd's version
int major, minor, bugfix;
sys_getversion(&major, &minor, &bugfix);
printf("Running Pd %d.%d-%d\n", major, minor, bugfix);
// We requested in Bela_userSettings() to have uniform sampling rate for audio
// and analog and non-interleaved buffers.
// So let's check this actually happened
if(context->analogSampleRate != context->audioSampleRate)
{
fprintf(stderr, "The sample rate of analog and audio must match. Try running with --uniform-sample-rate\n");
return false;
}
if(context->flags & BELA_FLAG_INTERLEAVED)
{
fprintf(stderr, "The audio and analog channels must be interleaved.\n");
return false;
}
if(context->digitalFrames > 0 && context->digitalChannels > 0)
gDigitalEnabled = 1;
// add here other devices you need
gMidiPortNames.push_back("hw:1,0,0");
//gMidiPortNames.push_back("hw:0,0,0");
//gMidiPortNames.push_back("hw:1,0,1");
scope.setup(gScopeChannelsInUse, context->audioSampleRate);
gScopeOut = new float[gScopeChannelsInUse];
// Check first of all if the patch file exists. Will actually open it later.
char file[] = "_main.pd";
char folder[] = "./";
unsigned int strSize = strlen(file) + strlen(folder) + 1;
char* str = (char*)malloc(sizeof(char) * strSize);
snprintf(str, strSize, "%s%s", folder, file);
if(access(str, F_OK) == -1 ) {
printf("Error file %s/%s not found. The %s file should be your main patch.\n", folder, file, file);
return false;
}
free(str);
// analog setup
gAnalogChannelsInUse = context->analogInChannels;
gDigitalChannelsInUse = context->digitalChannels;
printf("Audio channels in use: %d\n", context->audioOutChannels);
printf("Analog channels in use: %d\n", gAnalogChannelsInUse);
printf("Digital channels in use: %d\n", gDigitalChannelsInUse);
// Channel distribution
gFirstAnalogInChannel = std::max(context->audioInChannels, context->audioOutChannels);
gFirstAnalogOutChannel = gFirstAnalogInChannel;
gFirstDigitalChannel = gFirstAnalogInChannel + std::max(context->analogInChannels, context->analogOutChannels);
if(gFirstDigitalChannel < minFirstDigitalChannel)
gFirstDigitalChannel = minFirstDigitalChannel; //for backwards compatibility
gLibpdDigitalChannelOffset = gFirstDigitalChannel + 1;
gFirstScopeChannel = gFirstDigitalChannel + gDigitalChannelsInUse;
gChannelsInUse = gFirstScopeChannel + gScopeChannelsInUse;
// Create receiverNames for digital channels
generateDigitalNames(gDigitalChannelsInUse, gLibpdDigitalChannelOffset, gReceiverInputNames, gReceiverOutputNames);
// digital setup
if(gDigitalEnabled)
{
dcm.setCallback(sendDigitalMessage);
if(gDigitalChannelsInUse > 0){
for(unsigned int ch = 0; ch < gDigitalChannelsInUse; ++ch){
dcm.setCallbackArgument(ch, (void*) gReceiverInputNames[ch].c_str());
}
}
}
unsigned int n = 0;
while(n < gMidiPortNames.size())
{
Midi* newMidi = openMidiDevice(gMidiPortNames[n], false, false);
if(newMidi)
{
midi.push_back(newMidi);
++n;
} else {
gMidiPortNames.erase(gMidiPortNames.begin() + n);
}
}
dumpMidi();
// check that we are not running with a blocksize smaller than gLibPdBlockSize
gLibpdBlockSize = libpd_blocksize();
if(context->audioFrames < gLibpdBlockSize){
fprintf(stderr, "Error: minimum block size must be %d\n", gLibpdBlockSize);
return false;
}
// set hooks before calling libpd_init
libpd_set_printhook(Bela_printHook);
libpd_set_floathook(Bela_floatHook);
libpd_set_listhook(Bela_listHook);
libpd_set_messagehook(Bela_messageHook);
libpd_set_noteonhook(Bela_MidiOutNoteOn);
libpd_set_controlchangehook(Bela_MidiOutControlChange);
libpd_set_programchangehook(Bela_MidiOutProgramChange);
libpd_set_pitchbendhook(Bela_MidiOutPitchBend);
libpd_set_aftertouchhook(Bela_MidiOutAftertouch);
libpd_set_polyaftertouchhook(Bela_MidiOutPolyAftertouch);
libpd_set_midibytehook(Bela_MidiOutByte);
//initialize libpd. This clears the search path
libpd_init();
//Add the current folder to the search path for externals
libpd_add_to_search_path(".");
libpd_add_to_search_path("../pd-externals");
libpd_init_audio(gChannelsInUse, gChannelsInUse, context->audioSampleRate);
gInBuf = get_sys_soundin();
gOutBuf = get_sys_soundout();
// start DSP:
// [; pd dsp 1(
libpd_start_message(1);
libpd_add_float(1.0f);
libpd_finish_message("pd", "dsp");
// Bind your receivers here
for(unsigned int i = 0; i < gDigitalChannelsInUse; i++)
libpd_bind(gReceiverOutputNames[i].c_str());
libpd_bind("bela_setDigital");
libpd_bind("bela_setMidi");
#ifdef BELA_LIBPD_GUI
libpd_bind("bela_guiOut");
libpd_bind("bela_setGui");
#endif // BELA_LIBPD_GUI
#ifdef ENABLE_TRILL
libpd_bind("bela_setTrill");
#endif // ENABLE_TRILL
// open patch:
gPatch = libpd_openfile(file, folder);
if(gPatch == NULL){
printf("Error: file %s/%s is corrupted.\n", folder, file);
return false;
}
// If the user wants to use the multiplexer capelet,
// the patch will have to contain an array called "bela_multiplexer"
// and a receiver [r bela_multiplexerChannels]
if(context->multiplexerChannels > 0 && libpd_arraysize(multiplexerArray) >= 0){
pdMultiplexerActive = true;
multiplexerArraySize = context->multiplexerChannels * context->analogInChannels;
// [; bela_multiplexer ` multiplexerArraySize` resize(
libpd_start_message(1);
libpd_add_float(multiplexerArraySize);
libpd_finish_message(multiplexerArray, "resize");
// [; bela_multiplexerChannels `context->multiplexerChannels`(
libpd_float("bela_multiplexerChannels", context->multiplexerChannels);
}
// Tell Pd that we will manage the io loop,
// and we do so in an Auxiliary Task
#ifdef PD_THREADED_IO
sys_dontmanageio(1);
AuxiliaryTask fdTask;
fdTask = Bela_createAuxiliaryTask(fdLoop, 50, "libpd-fdTask", NULL);
Bela_scheduleAuxiliaryTask(fdTask);
#endif /* PD_THREADED_IO */
// bela.pd
libpd_float("isThisBela",1);
dcm.setVerbose(false);
#ifdef ENABLE_TRILL
gTrillTask = Bela_createAuxiliaryTask(readTouchSensors, 51, "touchSensorRead", NULL);
gTrillPipe.setup("trillPipe", 1024);
#endif // ENABLE_TRILL
return true;
}
void render(BelaContext *context, void *userData)
{
#ifdef BELA_LIBPD_GUI
while(gGuiControlBuffers.size()) // this won't change within the loop, but it's good not to have to use a separate flag
{
static struct guiControlMessageHeader header;
static bool waitingForHeader = true;
if(waitingForHeader)
{
int ret = gGuiPipe.readRt(header);
if(1 != ret)
break;
else
waitingForHeader = false;
}
if(!waitingForHeader)
{
char payload[header.size];
int ret = gGuiPipe.readRt(&payload[0], header.size);
if(int(header.size) != ret)
{
break;
}
const char* name = gGuiControlBuffers[header.id].c_str();
if('f' == header.type)
{
if(header.size != sizeof(float))
{
rt_fprintf(stderr, "Unexpected message length for float: %u\n", header.size);
continue;
}
float value = ((float*)payload)[0];
libpd_start_message(1);
libpd_add_float(value);
libpd_finish_message("bela_guiControl", name);
}
if('s' == header.type)
{
libpd_symbol(name, payload);
}
waitingForHeader = true;
}
}
for(auto& b : gGuiDataBuffers)
{
int id = b.id;
int size = b.size;
const char* name = b.name.c_str();
if(id < 0)
{
// initialize
size = libpd_arraysize(name);
if(size <= 0)
{
continue;
} else {
// this is thread-unsafe: what happens if this causes reallocation while the Gui thread is writing to a buffer?
id = gui.setBuffer('f', size);
b.id = id;
b.size = size;
DataBuffer& dataBuffer = gui.getDataBuffer(id);
// initialize gui buffer with the initial content of the array
libpd_read_array(dataBuffer.getAsFloat(), b.name.c_str(), 0, size);
}
}
DataBuffer& dataBuffer = gui.getDataBuffer(b.id);
libpd_write_array(b.name.c_str(), 0, dataBuffer.getAsFloat(), dataBuffer.getNumElements());
}
#endif // BELA_LIBPD_GUI
#ifdef ENABLE_TRILL
for(auto& name : gTrillAcks)
{
unsigned int idx = getIdxFromId(name.c_str(), gTouchSensors);
libpd_start_message(3);
libpd_add_symbol(Trill::getNameFromDevice(gTouchSensors[idx].second->deviceType()).c_str());
libpd_add_float(gTouchSensors[idx].second->getAddress());
libpd_add_symbol(Trill::getNameFromMode(gTouchSensors[idx].second->getMode()).c_str());
libpd_finish_message("bela_trillCreated", name.c_str());
}
gTrillAcks.resize(0);
bool doTrill = false;
for(auto& t : gTouchSensors)
{
if(Trill::NONE != t.second->deviceType())
{
doTrill = true;
break;
}
}
if(doTrill)
{
int idx;
while(gTrillPipe.readRt(idx) > 0)
{
Trill& touchSensor = *gTouchSensors[idx].second;
const char* sensorId = gTouchSensors[idx].first.c_str();
if(Trill::Device::NONE == touchSensor.deviceType())
continue;
const Trill::Mode mode = touchSensor.getMode();
if(Trill::DIFF == mode || Trill::RAW == mode || Trill::BASELINE == mode)
{
libpd_start_message(touchSensor.getNumChannels());
for(unsigned int n = 0; n < touchSensor.getNumChannels(); ++n)
{
libpd_add_float(touchSensor.rawData[n]);
}
} else if(Trill::CENTROID == mode)
{
if(touchSensor.is1D()) {
libpd_start_message(2 * touchSensor.getNumTouches() + 1);
libpd_add_float(touchSensor.getNumTouches());
for(unsigned int i = 0; i < touchSensor.getNumTouches(); i++) {
libpd_add_float(touchSensor.touchLocation(i));
libpd_add_float(touchSensor.touchSize(i));
}
} else if (touchSensor.is2D()) {
int numTouches = touchSensor.compoundTouchSize() > 0;
libpd_start_message(2 * numTouches + 1);
libpd_add_float(numTouches > 0);
if(numTouches)
{
libpd_add_float(touchSensor.compoundTouchHorizontalLocation());
libpd_add_float(touchSensor.compoundTouchLocation());
libpd_add_float(touchSensor.compoundTouchSize());
}
}
}
else
continue;
libpd_finish_message("bela_trill", sensorId);
}
static unsigned int count = 0;
unsigned int readIntervalSamples = touchSensorSleepInterval * context->audioSampleRate;
count += context->audioFrames;
if(count > readIntervalSamples)
{
Bela_scheduleAuxiliaryTask(gTrillTask);
count -= readIntervalSamples;
}
}
#endif // ENABLE_TRILL
#ifdef PARSE_MIDI
int num;
for(unsigned int port = 0; port < midi.size(); ++port){
while((num = midi[port]->getParser()->numAvailableMessages()) > 0){
static MidiChannelMessage message;