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I’m trying to get an application running on a Unix (Ubuntu) system. I’m running into an issue when calling System->Init(). My startup code is below. I’ve tried forcing with each driver on my system (I’ve got 3) and get the same result each time. Changing FMOD_SPEAKERMODE_RAW to FMOD_SPEAKERMODE_DEFAULT or STEREO in the setSoftwareFormat() call yields a FMOD_OK result.

Any help would be appreciated.

void StartFmod()
{
    FMOD_RESULT result;

    result = FMOD::System_Create(&mSystem);
    ERRCHECK(result);

    result = mSystem->getDriver(&nCurrentDriver);
    ERRCHECK(result);

    // it's possible to decide to set a different driver between the last
    // line of code and this line
    // Have posted simplified code for support purposes
    result = mSystem->setDriver(nCurrentDriver);
    ERRCHECK(result);

    FMOD_SPEAKERMODE speakerMode = FMOD_SPEAKERMODE::FMOD_SPEAKERMODE_MONO;
    int speakerModeChannels;
    int sampleRate;
    char* name;
    result = mSystem->getDriverInfo(nCurrentDriver, name, 50, 0, &sampleRate, &speakerMode, &speakerModeChannels);
    ERRCHECK(result);

    mSystem->setSoftwareFormat(sampleRate, FMOD_SPEAKERMODE_RAW, speakerModeChannels);

    FMOD_INITFLAGS flags = FMOD_INIT_NORMAL;
    result = mSystem->init(32, flags, 0);
    ERRCHECK(result);
}
  • Mathew Block

    Could you provide some details about what you’re trying to achieve with the RAW speaker mode? Usually this is for a setup with >8 channels.

  • David Steinwedel

    I’ve made a distributed stereo / music playback system for a physical location. EG I have a house with 5 rooms and want to be able to control playback of any audio source to any combination of rooms.

  • Mathew Block

    Thanks for the info, could you link with the logging version of FMOD and provide the stderr output?

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Best Answer
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Without further information of your goal, my recommendation would be to remove the code that explicitly sets the speakers mode or choose a particular speaker mode you want to design your application / game for.

FMOD will handle up/down mixing as necessary depending on the hardware on each device.

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