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Iwan Paturel

I'm using the RNBO export function and the VCV rack SDK to translate my RNBO patches into Rack modules. I'm trying to hack a little bit into the system (module.cpp, rnbo_source.cpp and others) in order to be able to control the appearance of the final module directly from the parameters or in/outlets metadata field. 

The issue is that there is no implementation of the "meta" field in the rnbo c++ export. Well, it does exist in the "description.json", but there is no solution implemented to access it easily, meaning that the field doesn't exit in the "rnbo_source.cpp", neither in the "ParameterInfo" struct in "RNBO_Types.h" : 

struct ParameterInfo
	{
		ParameterType type;
		IOType ioType = IOTypeUndefined;
		ParameterValue min = 0.;
		ParameterValue max = 1.;
		ParameterValue initialValue = 0.;
		ParameterValue exponent = 1.;
		int steps = 0; // 0 = continuous, 1 = toggle, 2+ indicates steps in the normalized representation
		bool debug = false;
		bool saveable = false;
		bool transmittable = false;
		bool initialized = false;
		bool visible = false;
		const char **enumValues = nullptr;
		const char *displayName = "";
		const char *unit = "";
		SignalIndex signalIndex = INVALID_INDEX;
	};


As these files are generated by RNBO during the export, I cannot modify them in order to have the informations needed. I don't want my first option to be to parse the .json file... Is there any way that I could get the metadata directly from the RNBO export in a way similar to the ParameterInfo struct ? 

Hi everyone, 

I'm using the RNBO export function and the VCV rack SDK to translate my RNBO patches into Rack modules. I'm trying to hack a...

getting-the-rnbo-parameters-metadata-with-a-getter-from-the-rnbosourcecpp-or-similar

Getting the RNBO parameters metadata with a getter from the rnbo_source.cpp (or similar)

Shakeeb Alireza

On Max 9.0.5 running on a MacBook M1 Air laptop, I just observed a very strange reproducible crash, which can be demonstrated  in the  minimal external code below.

 method there are 4 illustrative cases which were tested individually and in each case where a 

-type symbol it crashed. I will include the 

#include "ext.h"
#include "ext_obex.h"
#include "commonsyms.h"

typedef struct _jw
{
    t_object ob;  // the object itself (must be first)
    void* outlet; // one outlet
} t_jw;

void* jw_new(void);
void jw_free(t_jw* x);
void jw_assist(t_jw* x, void* b, long m, long a, char* s);
void jw_bang(t_jw* x);

void* jw_class;

void ext_main(void* r)
{
    t_class* c;

    c = class_new("jw", (method)jw_new, (method)jw_free, (long)sizeof(t_jw),
                  0L /* leave NULL!! */, A_NOTHING, 0);

    class_addmethod(c, (method)jw_bang,   "bang",   0);

    class_register(CLASS_BOX, c);
    jw_class = c;
}

void jw_free(t_jw* x)
{
    ;
}

void* jw_new(void)
{
    t_jw* x = NULL;
    if ((x = (t_jw*)object_alloc(jw_class))) {
        x->outlet = outlet_new(x, NULL);
    }
    return (x);
}

void jw_bang(t_jw* x)
{
    // NO CRASH
    t_object* mytable = (t_object*)object_new(gensym("nobox"), gensym("table"));
    object_free(mytable);

    // CRASH
    t_object* mytable = (t_object*)object_new(_sym_nobox, _sym_table);
    object_free(mytable);

    // NO CRASH
    t_object* jsonwriter = (t_object*)object_new(gensym("nobox"), gensym("jsonwriter"));
    object_free(jsonwriter);

    // CRASH
    t_object* jsonwriter = (t_object*)object_new(_sym_nobox, _sym_jsonwriter);
    object_free(jsonwriter);

    outlet_bang(x->outlet);
}


include(${CMAKE_CURRENT_SOURCE_DIR}/../../max-sdk-base/script/max-pretarget.cmake)

include_directories( 
	"${MAX_SDK_INCLUDES}"
	"${MAX_SDK_MSP_INCLUDES}"
	"${MAX_SDK_JIT_INCLUDES}"
)

file(GLOB PROJECT_SRC
     "*.h"
     "*.c"
     "*.cpp"
)
add_library( 
	${PROJECT_NAME} 
	MODULE
	${PROJECT_SRC}
	"${MAX_SDK_INCLUDES}/common/commonsyms.c"
)

include(${CMAKE_CURRENT_SOURCE_DIR}/../../max-sdk-base/script/max-posttarget.cmake)


On Max 9.0.5 running on a MacBook M1 Air laptop, I just observed a very strange reproducible crash, which can be demonstrated  in the ...

weird-crash-caused-by-use-of-sym-type-symbols-in-an-external-on-max-9

Weird CRASH caused by use of _sym-type symbols in an external on Max 9

Is there a way to debug issues (for example: get console logs like we do in web browser) on jweb? It doesn't look as easier to find logs on Max Runtime for anything inside of jweb. Anything on this will be appreciated.

Hi there,

Is there a way to debug issues (for example: get console logs like we do in web browser) on jweb? It doesn't look as easier to...

how-to-debug-jweb-issues

How to debug jweb issues?

pdelges

I'm trying to port my old sfmarkers~ external to ARM and just noticed it doesn't work for AIFF files since some Max versions.

I does work with Max8.1.11 but not with 8.3.3 and later (on intel, 64bits).

As far as I still understand my 20+ years old code,  the call to 

 pointer in the _sndfileinfo structure, even if markers are present in the soundfile.

Did something change in  sndfile_info() between Max8.1 and Max8.3?

I'm trying to port my old sfmarkers~ external to ARM and just noticed it doesn't work for AIFF files since some Max versions.

I does work...

sndfileinfo-in-extsndfileh

sndfile_info() in ext_sndfile.h

Noise Wrangler

I'm working on my first external, and I'm facing a strange issue. My external compiles fine and behaves as I want. I save a patcher with the external in it, still no issue. 

But if I close and start Max again, and directly load the patcher with the external, then I get a "No such object" error. 

One way to clear the issue is to open a new empty patcher, create an object with the external (which is now visible and doesn't cause an error), close the empty patcher (without saving it), and only then edit the external object in the original patcher. 

I'm on Windows 10, Max 8.6.1, SDK 8.2 and the external is in C. 

Hello everyone,

I'm working on my first external, and I'm facing a strange issue. My external compiles fine and behaves as I want. I save...

external-no-such-object-issue

External - No such object issue

Michael Norris

Hi there — I’m working on a Max/MSP external that processes a buffer of sound. I have a crash in buffer_locksamples that only occurs if the user changes the filename argument of the buffer that is being referenced while the external is running.

For instance, my [buffer~] object is set to ‘buffer~ myBuffer jongly.aif’. If I go in and change it to ‘buffer~ myBuffer duduk.aif’, while my external is running, I get the crash in this second line

t_buffer_obj *buffer = buffer_ref_getobject(x->bufferRef);
bufferPtr = buffer_locksamples( buffer );

My external never receives a buffer_changed notification — it just crashes with a EXC_BAD_ACCESS error.

Hi there — I’m working on a Max/MSP external that processes a buffer of sound. 

crash-in-bufferlocksamples-when-changing-the-filename-argument-of-the-buffer

SOLVED
For anyone else who has had this problem, here’s the solution:

The issue is a bit weird, but is due to an undocumented notification that is sent to the external. I had assumed that if the buffer’s filename was changed, then I should receive a “buffer_modified” notification. I was ignoring every other notification — i.e. I was returning 0 at the end of my notify routine.

However, it turns out that when the buffer filename is changed, there are in fact some notifications sent, but they are not ‘buffer_modified’. So what you *actually* need to do, to stop the crash — and the correct way to deal with this is shown in the sample projects, but I hadn’t quite appreciated the importance of it — is that you need to forward *all* notifications to the buffer_ref_notify routine — i.e. you should never return 0 at the end, always: return buffer_ref_notify(x->bufferRef, s, msg, sender, data);

Crash in buffer_locksamples when changing the filename argument of the buffer

cesc

I am working with the jsextensions c-api, the only example I know of is in the 

as parameter in javascript gets interpreted as two parameters (

) but in javascript I am passing obviously only one parameter.

grafik.png

's value in c is two, is this intended or am I missing something?

When I uncomment the line after BOOM, it crashes because I am not correctly getting the pointer to the patcher, any ideas on how to achieve that?

I am working with the jsextensions c-api, the only example I know of is in the max-sdk (simplejs)

Passing this patcher as parameter in javascript gets interpreted as two parameters (jsobject and an integer) but in javascript I am passing obviously only one parameter.

- m.doEvilThingsWith(1) has one parameter and ac's value in c is one
- m.doEvilThingsWith(this.patcher) has one parameter but ac's value in c is two, is this intended or am I missing something?

Here you have the whole example

When I uncomment the line after BOOM, it crashes because I am not correctly getting the pointer to the patcher, any ideas on how to achieve that?

See below the relevant c code part.


I am working with the jsextensions c-api, the only example I know of is in the max-sdk (simplejs)

Passing this patcher as parameter in ... 

jsextensions-c-api-max-object-used-as-a-javascript-class-passing-thispatcher-as-parameter

[jsextensions c-api] Max object used as a JavaScript class: passing this.patcher as parameter

Trevor being Trevor

This post has a lot of information to give the necessary context, but essentially I can't get the project to build when I add the code to simulate a keystroke and I am not sure why. I was able to figure this out for Windows, but I am running into a problem on Mac that I can't get past. I followed the instructions of this video and github page which seem to be the most up to date.

https://www.youtube.com/watch?v=il5WblTBUgs

https://github.com/Cycling74/max-sdk/blob/main/README-8.2-update.md

I started by manipulating the min.hello-world project. I removed the greeting when the object loads, edited the bang function and created a function that responds to integers. Everything compiles and works as expected. However, I want to simulate a keystroke so I brought in the following libraries...

#include <CoreGraphics/CoreGraphics.h>
#include <ApplicationServices/ApplicationServices.h>
#include <Carbon/Carbon.h>

As far as I understand, I only need Application Services, but the other ones were added as I tried to troubleshoot issues. Anyway, to use those libraries I updated my "respond to integer" function to the following code...

message<> number {this, "int", 
        MIN_FUNCTION {
            int key = 56;
            //EDIT: this code is close to correct, but definitely don't trust it.
            //there are better examples on Stack Overflow, if you are really stuck
            //comment and could share something better. Also, it appears
            //olsen put 11strokes code up on Github. It says it's cross platform, so it
            //may be a better and more comprehensive source than what I could offer.
            
            // Create an HID hardware event source
            CGEventSourceRef src = CGEventSourceCreate(kCGEventSourceStateHIDSystemState);
            
            // Create a new keyboard key press event
            CGEventRef evt = CGEventCreateKeyboardEvent(src, (CGKeyCode) key, true);
            
            // Post keyboard event and release
            CGEventPost (kCGHIDEventTap, evt);
            CFRelease (evt);
            CFRelease (src);
 
            //this line printed before I added the above
            cout<< "Sometimes I work, sometimes I don't" << endl;
            return {};
        }
    };

Instead of Xcode (I am not very familiar with it) I am using the terminal to build using the command "

" inside the build folder which works great.

Dev Forum