void USoundWave::InitAudioResource( FByteBulkData& CompressedData ) { if( !ResourceSize ) { // Grab the compressed vorbis data from the bulk data ResourceSize = CompressedData.GetBulkDataSize(); if( ResourceSize > 0 ) { check(!ResourceData); CompressedData.GetCopy( ( void** )&ResourceData, true ); } } }
bool USoundWave::InitAudioResource(FName Format) { if( !ResourceSize && (!FPlatformProperties::SupportsAudioStreaming() || !IsStreaming()) ) { FByteBulkData* Bulk = GetCompressedData(Format); if (Bulk) { ResourceSize = Bulk->GetBulkDataSize(); check(ResourceSize > 0); check(!ResourceData); Bulk->GetCopy((void**)&ResourceData, true); } } return ResourceSize > 0; }
/** Build the streamed audio. This function is safe to call from any thread. */ void BuildStreamedAudio() { GetStreamedAudioDerivedDataKeySuffix(SoundWave, AudioFormatName, KeySuffix); DerivedData->Chunks.Empty(); ITargetPlatformManagerModule* TPM = GetTargetPlatformManager(); const IAudioFormat* AudioFormat = NULL; if (TPM) { AudioFormat = TPM->FindAudioFormat(AudioFormatName); } if (AudioFormat) { DerivedData->AudioFormat = AudioFormatName; FByteBulkData* CompressedData = SoundWave.GetCompressedData(AudioFormatName); TArray<uint8> CompressedBuffer; CompressedBuffer.Empty(CompressedData->GetBulkDataSize()); CompressedBuffer.AddUninitialized(CompressedData->GetBulkDataSize()); void* BufferData = CompressedBuffer.GetData(); CompressedData->GetCopy(&BufferData, false); TArray<TArray<uint8>> ChunkBuffers; if (AudioFormat->SplitDataForStreaming(CompressedBuffer, ChunkBuffers)) { for (int32 ChunkIndex = 0; ChunkIndex < ChunkBuffers.Num(); ++ChunkIndex) { FStreamedAudioChunk* NewChunk = new(DerivedData->Chunks) FStreamedAudioChunk(); NewChunk->DataSize = ChunkBuffers[ChunkIndex].Num(); NewChunk->BulkData.Lock(LOCK_READ_WRITE); void* NewChunkData = NewChunk->BulkData.Realloc(ChunkBuffers[ChunkIndex].Num()); FMemory::Memcpy(NewChunkData, ChunkBuffers[ChunkIndex].GetData(), ChunkBuffers[ChunkIndex].Num()); NewChunk->BulkData.Unlock(); } } else { // Could not split so copy compressed data into a single chunk FStreamedAudioChunk* NewChunk = new(DerivedData->Chunks) FStreamedAudioChunk(); NewChunk->DataSize = CompressedBuffer.Num(); NewChunk->BulkData.Lock(LOCK_READ_WRITE); void* NewChunkData = NewChunk->BulkData.Realloc(CompressedBuffer.Num()); FMemory::Memcpy(NewChunkData, CompressedBuffer.GetData(), CompressedBuffer.Num()); NewChunk->BulkData.Unlock(); } DerivedData->NumChunks = DerivedData->Chunks.Num(); // Store it in the cache. PutDerivedDataInCache(DerivedData, KeySuffix); } if (DerivedData->Chunks.Num()) { bool bInlineChunks = (CacheFlags & EStreamedAudioCacheFlags::InlineChunks) != 0; bSucceeded = !bInlineChunks || DerivedData->TryInlineChunkData(); } else { UE_LOG(LogAudio, Warning, TEXT("Failed to build %s derived data for %s"), *AudioFormatName.GetPlainNameString(), *SoundWave.GetPathName() ); } }