Handling multiple different output matrices in Jitter MOP external

Connector

I am working on a Jitter MOP c-external with two inputs and two outputs:

 mop = jit_object_new(_jit_sym_jit_mop, 2, 2);

As far as i understand, this would be the usual way to access the different input and output matrices:

in_matrix = jit_object_method(inputs, _jit_sym_getindex, 0);
in2_matrix = jit_object_method(inputs, _jit_sym_getindex, 1);

out_matrix = jit_object_method(outputs, _jit_sym_getindex, 0);
out2_matrix = jit_object_method(outputs, _jit_sym_getindex, 1);   

if (x && in_matrix && in2_matrix && out_matrix && out2_matrix) {

    in_savelock = (long)jit_object_method(in_matrix, _jit_sym_lock, 1);
    in2_savelock = (long)jit_object_method(in2_matrix, _jit_sym_lock, 1);
    out_savelock = (long)jit_object_method(out_matrix, _jit_sym_lock, 1);
    out2_savelock = (long)jit_object_method(out2_matrix, _jit_sym_lock, 1);

    jit_object_method(in_matrix, _jit_sym_getinfo, &in_minfo);
    jit_object_method(in2_matrix, _jit_sym_getinfo, &in2_minfo);
    jit_object_method(out_matrix, _jit_sym_getinfo, &out_minfo);
    jit_object_method(out2_matrix, _jit_sym_getinfo, &out2_minfo);
  
    jit_object_method(in_matrix, _jit_sym_getdata, &in_bp);
    jit_object_method(in2_matrix, _jit_sym_getdata, &in2_bp);
    jit_object_method(out_matrix, _jit_sym_getdata, &out_bp);
    jit_object_method(out2_matrix, _jit_sym_getdata, &out2_bp);

In this case it seems, that every output matrix has the same properties than the leftmost input matrix.

But I would need to define different types, planecounts, dim sizes for each input and output matrix like these ones inside the matrix_calc function:

out_matrix:

jit_matrix_info_default(&posMatrixInfo); //for out_matrix
posMatrixInfo.planecount = 3;
posMatrixInfo.dimcount = 1;
posMatrixInfo.dim[0] = posSize;
posMatrixInfo.type = _jit_sym_float32;
posMatrix = jit_object_new(_jit_sym_jit_matrix, &posMatrixInfo);

out2_matrix:

jit_matrix_info_default(&indexMatrixInfo); //for out2_matrix
indexMatrixInfo.planecount = 1;
indexMatrixInfo.dimcount = 1;
indexMatrixInfo.dim[0] = indexMatrixSize; 
indexMatrixInfo.type = _jit_sym_long;
indexMatrix = jit_object_new(_jit_sym_jit_matrix, &indexMatrixInfo);

So how and at wich point can i define my output matrices in the right way?

Rob Ramirez

I believe you want to disable "typelink", "dimlink", and "planelink" attributes on the mop's input or outputs in the jitter object's init function. for example this is what jit.rgb2luma does to delink output planecount from the input.

// add mop
mop = jit_object_new(_jit_sym_jit_mop, 1, 1); // #inputs,#outputs
jit_mop_single_planecount(mop, 1);
jit_mop_single_type(mop, _jit_sym_char);
o = jit_object_method(mop, _jit_sym_getoutput, 1);
jit_attr_setlong(o, _jit_sym_planelink, 0);
jit_class_addadornment(_jit_rgb2luma_class, mop);

and then in the max object constructor:

max_jit_mop_setup_simple(x, o, argc, argv);
// 1-plane char out
m = max_jit_mop_getoutput(x, 1);
jit_object_method(m, _jit_sym_getinfo, &info);
info.type = _jit_sym_char;
info.planecount = 1;
info.dimcount = 2;
jit_object_method(m, _jit_sym_setinfo, &info);
max_jit_attr_args(x, argc, argv);

Connector

ok. thanks for the hint!