Compiler Error due to Build process

[socke]

@Pablo-J-Rogina

Hi Pablo, it is not necessarily solved just yet. Until I manage to do a proper function call, then I would say it's solved.

  typedef pv_status_t (*pv_porcupine_init)(const char *,
                                           int32_t,
                                            const char *const *,
                                            const float *,
                                            pv_porcupine_t **);

pv_status_t pv_porcupine_init = library.resolve("pv_porcupine_init");

if (pv_porcupine_init)
{
      pv_porcupine_t *handle;
      pv_status_t status = pv_porcupine_init(model_path, 1, &keyword_path, &sensitivity, &handle);

      if (status != PV_STATUS_SUCCESS)
      {
          qDebug() << "PV_STATUS_SUCCESS";
      }
  }

I am not entirely sure how to do this but I want to load the function pv_porcupine_init().
Based on this tutorial, what does this do exactly? And what is that in my scenario? Is pv_status_t correct in my case?

typedef void (*MyPrototype)();

I keep getting:

\main.cpp:81: error: C2440: 'initializing': cannot convert from 'QFunctionPointer' to 'MyPrototype'

[mrjj]

@socke
Hi
The is typedef pv_status_t (*pv_porcupine_init) ...
is the function prototype/definition
pv_status_t pv_porcupine_init (...)
and then we try to bind it to the actual function in the DLL
library.resolve("pv_porcupine_init");

so does it go into
if (pv_porcupine_init)
{
<--- ?

[socke]

@mrjj

Hey man, I figured that out.

typedef pv_status_t (*MyPrototype)(const char *,
                                     int32_t,
                                     const char *const *,
                                     const float *,
                                     pv_porcupine_t **);

  auto pv_porcupine_init = library.resolve("pv_porcupine_init");

  if (pv_porcupine_init)
  {
      pv_porcupine_t *handle;

      pv_status_t status = pv_porcupine_init(model_path, 1, &keyword_path, &sensitivity, &handle);
}

>> \main.cpp:88: error: C2197: 'void (__cdecl *)(void)': too many arguments for call

Seems as if my typedef declaration is incorrect? From what I can see, it corresponds to the same method in pv_porcupine.h.

[mrjj]

@socke
what is line 88 ?

[socke]

@mrjj said in Compiler Error due to Build process:

@socke
what is line 88 ?

Line 88 would be:

pv_status_t status = pv_porcupine_init(model_path, 1, &keyword_path, &sensitivity, &handle);

[mrjj]

@socke
maybe the auto dont get it right ?
try with
pv_status_t pv_porcupine_init =
if it complains then try to cast it

[socke]

@mrjj

I did it :D

typedef pv_status_t (*_pv_porcupine_init)(const char *, int32_t, const char *const *, const float *, pv_porcupine_t **);

   _pv_porcupine_init pv_porcupine_init = (_pv_porcupine_init) library.resolve("pv_porcupine_init");

   if (pv_porcupine_init)
   {
       pv_porcupine_t *handle;
       qDebug() << "PV_STATUS_SUCCESS";

       pv_status_t status = pv_porcupine_init(model_path, 1, &keyword_path, &sensitivity, &handle);
}

I believe the auto was not casting correctly, I believe (_pv_porcupine_init) fixed it.

Do you know how I know? The compiler said:
[ERROR] loading keyword file #0 failed with 'IO_ERROR'. Which means it called the function and the function returned that error message from my bad input, which is a step forward programmer wise haha

[mrjj]

hi
the most exciting part is if you see the
qDebug() << "PV_STATUS_SUCCESS"; ?

Well this has always been a bit hairy, i mean manual resolving function addresses from a DLL :)

[socke]

@mrjj
Yes, I will mark this as solved now.
However, you do know what is the most pain? I just realized that there exists no free open source trigger word detection repository :( apparently, the audio files you use for Porcupine expires after 30 days, in that sense, it's still free but I don't want to manually update my audio files.

Thanks a lot for the help btw.

[mrjj]

@socke

Victory !

Hmm. That is good to know and a big bummer for you.
So was not such huge joy even you won and got it to work.
On the bright side, you learn alot about linking.