"FSBank Error: The format of the source file is invalid."

FMOD Engine
5

I’ve identified the error here and have been able to fix it.

I misunderstood the documentation of FSBANK_SUBSOUND – Specifically, “fileNames - List of file names used to produce an interleaved sound.”.

I assumed this was where I was to provide the paths to all of my waves that I wanted to build into the .fsb, but the correct way to do it is to have an FSBANK_SUBSOUND for each sub sound (should be obvious, right? My mistake…)

My updated, correct code:

std::vector<FSBANK_SUBSOUND> subSounds;
std::vector<std::vector<const char *>>
    subSoundFileNames; // Need to keep strings in scope...
for (const auto &fileName : wavFileNames)
{
    subSoundFileNames.push_back({fileName.c_str()});

    FSBANK_SUBSOUND subSound = {0};
    subSound.fileNames = subSoundFileNames.back().data();
    subSound.numFiles = 1;

    subSounds.push_back(subSound);
}

ERRCHECK(FSBank_Build(subSounds.data(), static_cast<unsigned int>(subSounds.size()),
                      FSBANK_FORMAT_PCM, FSBANK_BUILD_DEFAULT, 0, nullptr, outputPath);

This actually builds a set of wavs into a single .fsb, which was my intention.