virtual bool SplitDataForStreaming(const TArray<uint8>& SrcBuffer, TArray<TArray<uint8>>& OutBuffers) const override
{
// 16K chunks - don't really have an idea of what's best for loading from disc yet
const int32 kMaxChunkSizeBytes = 16384;
if (SrcBuffer.Num() == 0)
{
return false;
}
uint32 ReadOffset = 0;
uint32 WriteOffset = 0;
uint16 ProcessedFrames = 0;
const uint8* LockedSrc = SrcBuffer.GetData();
// Read Identifier, True Sample Count, Number of channels and Frames to Encode first
if (FCStringAnsi::Strcmp((char*)LockedSrc, OPUS_ID_STRING) != 0)
{
return false;
}
ReadOffset += FCStringAnsi::Strlen(OPUS_ID_STRING) + 1;
uint16 SampleRate = *((uint16*)(LockedSrc + ReadOffset));
ReadOffset += sizeof(uint16);
uint32 TrueSampleCount = *((uint32*)(LockedSrc + ReadOffset));
ReadOffset += sizeof(uint32);
uint8 NumChannels = *(LockedSrc + ReadOffset);
ReadOffset += sizeof(uint8);
uint16 SerializedFrames = *((uint16*)(LockedSrc + ReadOffset));
ReadOffset += sizeof(uint16);
// Should always be able to store basic info in a single chunk
check(ReadOffset - WriteOffset < kMaxChunkSizeBytes)
while (ProcessedFrames < SerializedFrames)
{
uint16 FrameSize = *((uint16*)(LockedSrc + ReadOffset));
if ( (ReadOffset + sizeof(uint16) + FrameSize) - WriteOffset >= kMaxChunkSizeBytes)
{
WriteOffset += AddDataChunk(OutBuffers, LockedSrc + WriteOffset, ReadOffset - WriteOffset);
}
ReadOffset += sizeof(uint16) + FrameSize;
ProcessedFrames++;
}
if (WriteOffset < ReadOffset)
{
WriteOffset += AddDataChunk(OutBuffers, LockedSrc + WriteOffset, ReadOffset - WriteOffset);
}
return true;
}
bool CTXDescriptor::SetupHeaders(ULONG ParsedHeadersLength)
{
m_CurrVirtioSGLEntry = 0;
if (m_Headers.VlanHeader()->TCI == 0)
{
if (m_AnyLayout)
{
return AddDataChunk(m_Headers.VirtioHeaderPA(), m_Headers.VirtioHeaderLength() +
ParsedHeadersLength);
}
else
{
return AddDataChunk(m_Headers.VirtioHeaderPA(), m_Headers.VirtioHeaderLength()) &&
AddDataChunk(m_Headers.EthHeaderPA(), ParsedHeadersLength);
}
}
else
{
NETKVM_ASSERT(ParsedHeadersLength >= ETH_HEADER_SIZE);
if (!AddDataChunk(m_Headers.VirtioHeaderPA(), m_Headers.VirtioHeaderLength()) ||
!AddDataChunk(m_Headers.EthHeaderPA(), ETH_HEADER_SIZE) ||
!AddDataChunk(m_Headers.VlanHeaderPA(), ETH_PRIORITY_HEADER_SIZE))
{
return false;
}
if (ParsedHeadersLength > ETH_HEADER_SIZE)
{
return AddDataChunk(m_Headers.IPHeadersPA(), ParsedHeadersLength - ETH_HEADER_SIZE);
}
return true;
}
}