Max/source/j.receive/j.receive.cpp

Go to the documentation of this file.

/** @file
 *
 * @ingroup implementationMaxExternals
 *
 * @brief j.receive / j.receive~ : Receive messages and audio through remote communication
 *
 * @details
 *
 * @authors Théo de la Hogue, Trond Lossius
 *
 * @copyright © 2011 by Théo de la Hogue @n
 * This code is licensed under the terms of the "New BSD License" @n
 * http://creativecommons.org/licenses/BSD/
 */


#include "TTModularClassWrapperMax.h"

#define data_out 0
#define address_out 1
#define dump_out 2

// Definitions

/** Wrap the j.receive class as a Max object.
 @param c           The class to be wrapped
 @see               WrappedReceiverClass_new, WrappedReceiverClass_free
 */
void        WrapTTReceiverClass(WrappedClassPtr c);

/** Wrapper for the j.receive constructor class, called when an instance is created. 
 @param self        Pointer to this object.
 @param argc        The number of arguments passed to the object.
 @param argv        Pointer to an array of atoms passed to the object.
 @see               WrappedReceiverClass_free, receive_subscribe
 */
void        WrappedReceiverClass_new(TTPtr self, long argc, t_atom *argv);

/** Wrapper for the j.receive deconstructor class, called when an instance is destroyed. 
 @param self        Pointer to this object.
 @see               WrappedReceiverClass_new
 */
void        WrappedReceiverClass_free(TTPtr self);

/** Assistance Method. 
 @param self        Pointer to this object.
 @param b           Pointer to (exactly what?)
 @param msg         The message passed to the object.
 @param arg         
 @param dst         Pointer to the destination that assistance strings are passed to for display.
 */
void        receive_assist(TTPtr self, void *b, long msg, long arg, char *dst);

/** Associate j.receive(~) with NodeLib. This is a prerequisit for communication with other Jamoma object in the module and beyond.  */
void        receive_subscribe(TTPtr self);

void        receive_return_model_address(TTPtr self, t_symbol *msg, long argc, t_atom *argv);

#ifdef JCOM_RECEIVE_TILDE

/** j.receive~ 32-bit MSP perform method (for Max 5). Only defined for j.receive~. */
t_int*      receive_perform(t_int *w);

/** j.receive~ 32-bit DSP method (for Max 5).Only defined for j.receive~. */
void        receive_dsp(TTPtr self, t_signal **sp, short *count);

/** j.receive~ 64-bit MSP perform method (for Max 6). Only defined for j.receive~. */
void        receive_perform64(TTPtr self, t_object *dsp64, double **ins, long numins, double **outs, long numouts, long sampleframes, long flags, void *userparam);

/** j.receive~ 64-bit DSP method (for Max 6). Only defined for j.receive~. */
void        receive_dsp64(TTPtr self, t_object *dsp64, short *count, double samplerate, long maxvectorsize, long flags);

#else

void        receive_return_address(TTPtr self, t_symbol *msg, long argc, t_atom *argv);
void        receive_return_value(TTPtr self, t_symbol *msg, long argc, t_atom *argv);

/** bang handler for j.receive
 @param self        Pointer to this object
 @see               receive_int, receive_float, receive_list, WrappedOutputClass_anything
 */
void        receive_bang(TTPtr self);
#endif

/** address message handler for j.receive. To change the address to bind.
 @param self        Pointer to this object
 @param address     The address to bind
 @see               receive_subscribe
 */
void        receive_address(TTPtr self, t_symbol *address);

#pragma mark -
#pragma mark main

int C74_EXPORT main(void)
{
    ModularSpec *spec = new ModularSpec;
    spec->_wrap = &WrapTTReceiverClass;
    spec->_new = &WrappedReceiverClass_new;
    spec->_free = &WrappedReceiverClass_free;
    spec->_any = NULL;
    
#ifdef JCOM_RECEIVE_TILDE
    return wrapTTModularClassAsMaxClass(kTTSym_Receiver, "j.receive~", NULL, spec);
#else
    return wrapTTModularClassAsMaxClass(kTTSym_Receiver, "j.receive", NULL, spec);
#endif
    
}

void WrapTTReceiverClass(WrappedClassPtr c)
{
    class_addmethod(c->maxClass, (method)receive_assist,                "assist",               A_CANT, 0L);
    
    class_addmethod(c->maxClass, (method)receive_return_model_address,  "return_model_address", A_CANT, 0);

#ifdef JCOM_RECEIVE_TILDE
    class_addmethod(c->maxClass, (method)receive_dsp,                   "dsp",                  A_GIMME, 0);
    class_addmethod(c->maxClass, (method)receive_dsp64,                 "dsp64",                A_CANT, 0);
#else
    class_addmethod(c->maxClass, (method)receive_return_address,        "return_address",       A_CANT, 0);
    class_addmethod(c->maxClass, (method)receive_return_value,          "return_value",         A_CANT, 0);

    class_addmethod(c->maxClass, (method)receive_bang,                  "bang",                 0);
#endif
    
    class_addmethod(c->maxClass, (method)receive_address,               "address",              A_SYM, 0);
}

#pragma mark -
#pragma mark Object life

void WrappedReceiverClass_new(TTPtr self, long argc, t_atom *argv)
{
    WrappedModularInstancePtr   x = (WrappedModularInstancePtr)self;
    t_symbol                    *address;
    long                        attrstart = attr_args_offset(argc, argv);           // support normal arguments
    t_atom                      a[1];
    
    // read first argument
    if (attrstart && argv) 
        address = atom_getsym(argv);
    else
        address = _sym_nothing;
    
    x->address = TTAddress(jamoma_parse_dieze((t_object*)x, address)->s_name);
    
    // if the j.receive tries to bind an Output object : bind the signal attribute if no attribute is precised
    if (x->address.getName() == TTSymbol("out") || x->address.getName() == TTSymbol("in"))
        if (x->address.getAttribute() == kTTSymEmpty)
            x->address = x->address.appendAttribute(kTTSym_signal);
    
    x->index = 0; // the index member is usefull to count how many time the external tries to bind
    
    x->outlets = (TTHandle)sysmem_newptr(sizeof(TTPtr) * 2);
        
#ifdef JCOM_RECEIVE_TILDE
        jamoma_receiver_create_audio((t_object*)x, x->wrappedObject);
        
        dsp_setup((t_pxobject *)x, 1);  
        x->obj.z_misc = Z_NO_INPLACE | Z_PUT_FIRST;
        
        x->outlets[address_out] = outlet_new(x, NULL);                  // anything outlet to output address
        x->outlets[data_out] = outlet_new((t_pxobject *)x, "signal");   // signal outlet to output audio
#else
        jamoma_receiver_create((t_object*)x, x->wrappedObject);
    
        x->outlets[address_out] = outlet_new(x, NULL);                  // anything outlet to output address
        x->outlets[data_out] = outlet_new(x, NULL);                     // anything outlet to output data
#endif

    // handle attribute args
    attr_args_process(x, argc, argv);
    
    // for absolute address
    if (x->address.getType() == kAddressAbsolute) {
        
        x->wrappedObject.set(kTTSym_address, x->address);
        atom_setsym(a, gensym((char*)x->address.c_str()));
        object_obex_dumpout((t_object*)x, gensym("address"), 1, a);
        
        JamomaDebug object_post((t_object*)x, "binds on %s", x->address.c_str());
        
        return;
    }
    
    // The following must be deferred because we have to interrogate our box,
    // and our box is not yet valid until we have finished instantiating the object.
    // Trying to use a loadbang method instead is also not fully successful (as of Max 5.0.6)
    defer_low((t_object*)x, (method)receive_subscribe, NULL, 0, 0);
}

void WrappedReceiverClass_free(TTPtr self)
{
    WrappedModularInstancePtr   x = (WrappedModularInstancePtr)self;
    
    x->wrappedObject.set(kTTSym_address, kTTAdrsEmpty);
    
#ifdef JCOM_RECEIVE_TILDE
    
    // Always call dsp_free first in this routine
    dsp_free((t_pxobject *)x);
#endif
}

#pragma mark -
#pragma mark NodeLib association

void receive_subscribe(TTPtr self)
{
    WrappedModularInstancePtr   x = (WrappedModularInstancePtr)self;
    TTValue                     v;
    t_atom                      a[1];
    TTAddress                   contextAddress = kTTAdrsEmpty;
    TTAddress                   absoluteAddress, returnedAddress;
    TTNodePtr                   returnedNode = NULL;
    TTNodePtr                   returnedContextNode = NULL;
    TTObject                    anObject, empty;
    
    if (x->address == kTTAdrsEmpty)
        return;
    
    // for relative address
    jamoma_patcher_get_info((t_object*)x, &x->patcherPtr, x->patcherContext, x->patcherClass, x->patcherName);
    
    if (!jamoma_subscriber_create((t_object*)x, empty, TTAddress("model"), x->subscriberObject, returnedAddress, &returnedNode, &returnedContextNode)) {
        
        // get the context address to make
        // a receiver on the contextAddress/model:address attribute
        x->subscriberObject.get("contextAddress", v);
        contextAddress = v[0];
        
        // release the subscriber
        x->subscriberObject = TTObject();
        
        if (x->patcherContext) {
            
            if (x->address == TTAddress("model:address")) {
                
                x->wrappedObject.set(kTTSym_address, contextAddress.appendAddress(x->address));
                atom_setsym(a, gensym((char*)x->address.c_str()));
                object_obex_dumpout((t_object*)x, gensym("address"), 1, a);
                
                JamomaDebug object_post((t_object*)x, "binds on %s", contextAddress.appendAddress(x->address).c_str());

                return;
            }
            else {
                
                // observe model:address attribute (in view patcher : deferlow return_model_address)
                makeInternals_receiver(x, contextAddress, TTSymbol("/model:address"), gensym("return_model_address"), anObject, x->patcherContext == kTTSym_view);
                
                return;
            }
        }
    }
    
    // else, if no context, set address directly
    else if (x->patcherContext == kTTSymEmpty) {
        
        // release the subscriber
        x->subscriberObject = TTObject();
        
        contextAddress = kTTAdrsRoot;
        absoluteAddress = contextAddress.appendAddress(x->address);
        x->wrappedObject.set(kTTSym_address, absoluteAddress);
        
        atom_setsym(a, gensym((char*)absoluteAddress.c_str()));
        object_obex_dumpout((t_object*)x, gensym("address"), 1, a);
        
        return;
    }
    
    // otherwise while the context node is not registered : try to binds again :(
    // (to -- this is not a good way todo. For binding we should make a subscription 
    // to a notification mechanism and each time an TTObjet subscribes to the namespace
    // using jamoma_subscriber_create we notify all the externals which have used 
    // jamoma_subscriber_create with NULL object to bind)
    
    // release the subscriber
    x->subscriberObject = TTObject();
    
    x->index++; // the index member is usefull to count how many time the external tries to bind
    if (x->index > 100) {
        object_error((t_object*)x, "tries to bind too many times on %s", x->address.c_str());
        object_obex_dumpout((t_object*)x, gensym("error"), 0, NULL);
        return;
    }
    
    // The following must be deferred because we have to interrogate our box,
    // and our box is not yet valid until we have finished instantiating the object.
    // Trying to use a loadbang method instead is also not fully successful (as of Max 5.0.6)
    defer_low((t_object*)x, (method)receive_subscribe, NULL, 0, 0);
}

void receive_return_model_address(TTPtr self, t_symbol *msg, long argc, t_atom *argv)
{
    WrappedModularInstancePtr   x = (WrappedModularInstancePtr)self;
    TTAddress                   absoluteAddress;
    t_atom                      a[1];
    
    if (argc && argv && x->wrappedObject.valid() && x->address.getType() == kAddressRelative) {
        
        // set address attribute of the wrapped Receiver object
        absoluteAddress = TTAddress(atom_getsym(argv)->s_name).appendAddress(x->address);
        x->wrappedObject.set(kTTSym_address, absoluteAddress);
        x->index = 0; // the index member is usefull to count how many time the external tries to bind
        
        atom_setsym(a, gensym((char*)absoluteAddress.c_str()));
        object_obex_dumpout((t_object*)x, gensym("address"), 1, a);
        
        JamomaDebug object_post((t_object*)x, "binds on %s", absoluteAddress.c_str());
    }
}

#ifndef JCOM_RECEIVE_TILDE
void receive_return_address(TTPtr self, t_symbol *msg, long argc, t_atom *argv)
{
    WrappedModularInstancePtr   x = (WrappedModularInstancePtr)self;
    
    outlet_anything(x->outlets[address_out], msg, argc, argv);
}

void receive_return_value(TTPtr self, t_symbol *msg, long argc, t_atom *argv)
{
    WrappedModularInstancePtr   x = (WrappedModularInstancePtr)self;
    TTValue     v;

    // avoid blank before data
    if (msg == _sym_nothing)
        outlet_atoms(x->outlets[data_out], argc, argv);
    else
        outlet_anything(x->outlets[data_out], msg, argc, argv);
}
#endif

#pragma mark -
#pragma mark Methods bound to input/inlets

// Method for Assistance Messages
void receive_assist(TTPtr self, void *b, long msg, long arg, char *dst)
{
    if (msg==1)         // Inlets
        strcpy(dst, "address of node");
    else {                          // Outlets
        switch(arg) {
            case data_out:
#ifdef JCOM_RECEIVE_TILDE
                strcpy(dst, "(signal) node value");
#else
                strcpy(dst, "node value");
#endif
                break;
            case address_out:
                strcpy(dst, "address output");
                break;
            case dump_out:
                strcpy(dst, "dumpout");
                break;
        }
    }
}

#ifndef JCOM_RECEIVE_TILDE

void receive_bang(TTPtr self)
{
    WrappedModularInstancePtr   x = (WrappedModularInstancePtr)self;
    
    // catch error : dump an error
    if (x->wrappedObject.send(kTTSym_Get))
        object_obex_dumpout(self, _sym_error, 0, NULL);
}

#endif

void receive_address(TTPtr self, t_symbol *address)
{
    WrappedModularInstancePtr   x = (WrappedModularInstancePtr)self;
    t_atom                      a[1];
    TTAddress                   newAddress = TTAddress(jamoma_parse_dieze((t_object*)x, address)->s_name);
    
    // if the former address was relative and the new one is absolute :
    // we don't need model:address receiver anymore
    if (x->address.getType() == kAddressRelative &&
        newAddress.getType() == kAddressAbsolute) {
        
        TTValue v;
        TTErr   err = x->internals->lookup(TTSymbol("/model:address"), v);
        
        if (!err) {
            
            TTObject aReceiver = v[0];
            aReceiver.set(kTTSym_address, kTTAdrsEmpty);
            
            x->internals->remove(TTSymbol("/model:address"));
        }
    }
    
    // assign the new address
    x->address = newAddress;
    
    // if the j.receive tries to bind an Output object : bind the signal attribute if no attribute is precised
    if (x->address.getName() == TTSymbol("out") || x->address.getName() == TTSymbol("in"))
        if (x->address.getAttribute() == kTTSymEmpty)
            x->address = x->address.appendAttribute(kTTSym_signal);
    
    // for absolute address
    if (x->address.getType() == kAddressAbsolute) {
        
        x->wrappedObject.set(kTTSym_address, x->address);
        
        atom_setsym(a, gensym((char*)x->address.c_str()));
        object_obex_dumpout((t_object*)x, gensym("address"), 1, a);
        
        JamomaDebug object_post((t_object*)x, "binds on %s", x->address.c_str());
        
        return;
    }
    
    receive_subscribe(self);
}

#pragma mark -
#pragma mark Methods relating to audio processing

#ifdef JCOM_RECEIVE_TILDE
// Perform Method - just pass the whole vector straight through
// (the work is all done in the dsp method)
t_int *receive_perform(t_int *w)
{
    WrappedModularInstancePtr   x = (WrappedModularInstancePtr)(w[1]);
    TTReceiverPtr               aReceiver = (TTReceiverPtr)x->wrappedObject.instance();
    TTListPtr                   objectCache = NULL;
    TTObject                    anObject;
    TTUInt16                    vectorSize = 0;
    TTValue                     v;
    TTFloat32                   d;
    TTBoolean                   active;
    
    aReceiver->getAttributeValue(kTTSym_active, v);
    active = v[0];
    
    if (x->obj.z_disabled || !active)
        return w + 4;
    
    if (aReceiver) {
        
        // get signal vectorSize
        aReceiver->mSignal.get(kTTSym_vectorSize, vectorSize);
        
        // store the input
        TTAudioSignalPtr(aReceiver->mSignal.instance())->setVector(0, vectorSize, (TTFloat32*)w[2]);
        
        // get the object cache of the Receiver object
        if (!x->wrappedObject.get(kTTSym_objectCache, v)) {
            
            objectCache = TTListPtr((TTPtr)v[0]);
            
            if (objectCache) {
                
                // sum all object signals
                for (objectCache->begin(); objectCache->end(); objectCache->next()) {
                    
                    anObject = objectCache->current()[0];
                    
                    if (anObject.valid()) {
                        
                        // OUTPUT case : sum the signal from the output
                        if (anObject.name() == kTTSym_OutputAudio) {
                            
                            // get output signal vectorSize
                            TTOutputPtr(anObject.instance())->mSignalOut.get(kTTSym_vectorSize, vectorSize);
                            
                            // sum output signal
                            *TTAudioSignalPtr(aReceiver->mSignal.instance()) += *TTAudioSignalPtr(TTOutputPtr(anObject.instance())->mSignalOut.instance());
                        }
                        
                        // INPUT AUDIO case : sum the signal from the input
                        else if (anObject.name() == kTTSym_InputAudio) {
                            
                            // get output signal vectorSize
                            TTInputPtr(anObject.instance())->mSignalOut.get(kTTSym_vectorSize, vectorSize);
                            
                            // sum output signal
                            *TTAudioSignalPtr(aReceiver->mSignal.instance()) += *TTAudioSignalPtr(TTOutputPtr(anObject.instance())->mSignalOut.instance());
                        }
                        
                        // DATA case : fill a signal with the data value and sum it
                        else if (anObject.name() == kTTSym_Data) {
                            
                            // get value
                            anObject.get(kTTSym_value, v);
                            d = v[0];
                            
                            // TEST : fill the signal with the value
                            // TODO : add a += TTFloat64 inline method to TTAudioSignal class  
                            TTAudioSignalPtr(aReceiver->mSignal.instance())->fill(d);
                        }
                    }
                }
            }
            
            // send signal to the outlet
            TTAudioSignalPtr(aReceiver->mSignal.instance())->getVector(0, vectorSize, (TTFloat32*)w[3]);
        }
    }
    
    return w + 4;
}


// Perform Method 64 bit - just pass the whole vector straight through
// (the work is all done in the dsp 64 bit method)
void receive_perform64(TTPtr self, t_object *dsp64, double **ins, long numins, double **outs, long numouts, long sampleframes, long flags, void *userparam)
{
    WrappedModularInstancePtr   x = (WrappedModularInstancePtr)self;
    TTReceiverPtr               aReceiver = (TTReceiverPtr)x->wrappedObject.instance();
    TTListPtr                   objectCache = NULL;
    TTObject                    anObject;
    TTUInt16                    vectorSize = 0;
    TTValue                     v;
    TTFloat32                   d;
    TTBoolean                   active;
    
    aReceiver->getAttributeValue(kTTSym_active, v);
    active = v[0];
    
    if (x->obj.z_disabled || !active) {
        
        if (aReceiver) {
            
            // get signal vectorSize
            aReceiver->mSignal.get(kTTSym_vectorSize, vectorSize);
            
            // send signal to the outlet
            TTAudioSignalPtr(aReceiver->mSignal.instance())->getVectorCopy(0, vectorSize, outs[0]);
        }
        
        return;
    }
    
    if (aReceiver) {
        
        // get signal vectorSize
        aReceiver->mSignal.get(kTTSym_vectorSize, vectorSize);
        
        // store the input
        TTAudioSignalPtr(aReceiver->mSignal.instance())->setVector64Copy(0, vectorSize, ins[0]);
        
        // get the object cache of the Receiver object
        if (!aReceiver->getAttributeValue(kTTSym_objectCache, v)) {
            
            objectCache = TTListPtr((TTPtr)v[0]);
            
            if (objectCache) {
                
                // sum all object signals
                for (objectCache->begin(); objectCache->end(); objectCache->next()) {
                    
                    anObject = objectCache->current()[0];
                    
                    if (anObject.valid()) {
                        
                        // OUTPUT AUDIO case : sum the signal from the output
                        if (anObject.name() == kTTSym_OutputAudio) {
                            
                            // get output signal vectorSize
                            TTOutputPtr(anObject.instance())->mSignalOut.get(kTTSym_vectorSize, vectorSize);
                            
                            // sum output signal
                            *TTAudioSignalPtr(aReceiver->mSignal.instance()) += *TTAudioSignalPtr(TTOutputPtr(anObject.instance())->mSignalOut.instance());
                        }
                        
                        // INPUT AUDIO case : sum the signal from the input
                        else if (anObject.name() == kTTSym_InputAudio) {
                            
                            // get output signal vectorSize
                            TTInputPtr(anObject.instance())->mSignalOut.get(kTTSym_vectorSize, vectorSize);
                            
                            // sum output signal
                            *TTAudioSignalPtr(aReceiver->mSignal.instance()) += *TTAudioSignalPtr(TTInputPtr(anObject.instance())->mSignalOut.instance());
                        }
                        
                        // DATA case : fill a signal with the data value and sum it
                        else if (anObject.name() == kTTSym_Data) {
                            
                            // get value
                            anObject.get(kTTSym_value, v);
                            d = v[0];
                            
                            // TEST : fill the signal with the value
                            // TODO : add a += TTFloat64 inline method to TTAudioSignal class
                            TTAudioSignalPtr(aReceiver->mSignal.instance())->fill(d);
                        }
                    }
                }
            }
        }
        
        // send signal to the outlet
        TTAudioSignalPtr(aReceiver->mSignal.instance())->getVectorCopy(0, vectorSize, outs[0]);
    }
}

// DSP Method
void receive_dsp(TTPtr self, t_signal **sp, short *count)
{
    WrappedModularInstancePtr   x = (WrappedModularInstancePtr)self;
    TTReceiverPtr               aReceiver = (TTReceiverPtr)x->wrappedObject.instance();
    void**                      audioVectors = NULL;
    TTUInt16                    vectorSize = sp[0]->s_n;
    
    if (aReceiver) {
        
        audioVectors = (void**)sysmem_newptr(sizeof(void*) * 3);
        audioVectors[0] = x;
        
        if (count[0] || count[1]) {
            if (sp[0]->s_n > vectorSize)
                vectorSize = sp[0]->s_n;
            
            audioVectors[1] = sp[0]->s_vec;
            audioVectors[2] = sp[1]->s_vec;
        }
        
        // set signal numChannels and vectorSize
        aReceiver->mSignal.set(kTTSym_numChannels, 1);
        aReceiver->mSignal.set(kTTSym_vectorSize, vectorSize);
        
        // anOutput->mSignal will be set in the perform method
        aReceiver->mSignal.send(kTTSym_alloc);
        
        dsp_addv(receive_perform, 3, audioVectors);
        sysmem_freeptr(audioVectors);
    }   
}

// DSP64 method
void receive_dsp64(TTPtr self, t_object *dsp64, short *count, double samplerate, long maxvectorsize, long flags)
{
    WrappedModularInstancePtr   x = (WrappedModularInstancePtr)self;
    TTReceiverPtr               aReceiver = (TTReceiverPtr)x->wrappedObject.instance();
    
    if (aReceiver) {
        
        // set signal numChannels and vectorSize
        aReceiver->mSignal.set(kTTSym_numChannels, 1);
        aReceiver->mSignal.set(kTTSym_vectorSize, (TTUInt16)maxvectorsize);
        
        // aReceiver->mSignal will be set in the perform method
        aReceiver->mSignal.send(kTTSym_alloc);
        
        object_method(dsp64, gensym("dsp_add64"), x, receive_perform64, 0, NULL);
    }
}

#endif // JCOM_RECEIVE_TILDE