(39) 's Extra Blueprint Nodes for You as a Plugin, No C++ Required!

[frostic]

@Jaytheway

@frostic The was that SoundWave never got *RawPCMData *baked into it, which is apparently what it needs in packaged builds. Here’s fixed **GetSoundWaveFromWaveFile **function:

class USoundWave* **UMyBPFunctionLibrary**::GetSoundWaveFromWaveFile(const FString& filePath, bool& Success)
{
if (filePath == "") { Success = false; return nullptr; }

USoundWave* sw = NewObject<USoundWave>(USoundWave::StaticClass());
if (!sw) { Success = false; return nullptr; }

TArray < uint8 > rawFile;

FFileHelper::LoadFileToArray(rawFile, filePath.GetCharArray().GetData());
FWaveModInfo WaveInfo;

if (WaveInfo.ReadWaveInfo(rawFile.GetData(), rawFile.Num()))
{

// - catching not supported bit depth
if (*WaveInfo.pBitsPerSample != 16) { Success = false; return nullptr; }

sw->InvalidateCompressedData();

sw->RawData.Lock(LOCK_READ_WRITE);
void* LockedData = sw->RawData.Realloc(rawFile.Num());
FMemory::Memcpy(LockedData, rawFile.GetData(), rawFile.Num());
sw->RawData.Unlock();

int32 DurationDiv = *WaveInfo.pChannels * *WaveInfo.pBitsPerSample * *WaveInfo.pSamplesPerSec;
if (DurationDiv)
{
sw->Duration = *WaveInfo.pWaveDataSize * 8.0f / DurationDiv;
}
else
{
sw->Duration = 0.0f;
}
sw->SetSampleRate(*WaveInfo.pSamplesPerSec);
sw->NumChannels = *WaveInfo.pChannels;
sw->RawPCMDataSize = WaveInfo.SampleDataSize;
sw->SoundGroup = ESoundGroup::SOUNDGROUP_Default;

}
else {
Success = false;
return nullptr;
}

// - Baking PCM Data from file into SoundWave memory
const int32 NumSamples = sw->RawPCMDataSize / sizeof(Audio::DefaultUSoundWaveSampleType);

sw->RawPCMData = (uint8*)FMemory::Malloc(sw->RawPCMDataSize);
FMemory::Memcpy(sw->RawPCMData, WaveInfo.SampleDataStart, NumSamples * sizeof(Audio::DefaultUSoundWaveSampleType));

if (!sw) { Success = false; return nullptr; }

Success = true;
return sw;
}

Header:

UFUNCTION(BlueprintCallable, Category = "JP - Nodes", meta = (DisplayName = "Get Sound Wave from Wave file", Keywords = "Get Sound Wave from Wave file"))
static class USoundWave* GetSoundWaveFromWaveFile(const FString& filePath, bool& Success);

*“Success” *bool returns ***false ***if:

• file path is invalid
• failed to create SoundWave
• input wave file has unsupported bit depth (other than 16)

here is a change i had to make today as DefaultUSoundwave

else {
    Success = false;
    return nullptr;
}

// - Baking PCM Data from file into SoundWave memory
const int32 NumSamples = sw->RawPCMDataSize / sizeof(Audio::FResamplerResults);

sw->RawPCMData = (uint8*)FMemory::Malloc(sw->RawPCMDataSize);
FMemory::Memcpy(sw->RawPCMData, WaveInfo.SampleDataStart, NumSamples * sizeof(Audio::FResamplerResults));

if (!sw) { Success = false; return nullptr; }

Success = true;
return sw;

}

It seems that DefaultUSoundWaveSampleType is no longer in 4.24.3 and returns a null reference and crashes. the above change fixes .