[CommandHipc(5)] // 12.0.0+
// GetWorkBufferSizeEx(OpusParametersEx) -> u32
public ResultCode GetWorkBufferSizeEx(ServiceCtx context)
{
OpusParametersEx parameters = context.RequestData.ReadStruct <OpusParametersEx>();
// NOTE: The sample rate is ignored because it is fixed to 48KHz.
context.ResponseData.Write(GetOpusDecoderSize(parameters.ChannelCount));
return(ResultCode.Success);
}
[CommandHipc(4)] // 12.0.0+
// InitializeEx(OpusParametersEx, u32, handle<copy>) -> object<nn::codec::detail::IHardwareOpusDecoder>
public ResultCode InitializeEx(ServiceCtx context)
{
OpusParametersEx parameters = context.RequestData.ReadStruct <OpusParametersEx>();
// UseLargeFrameSize can be ignored due to not relying on fixed size buffers for storing the decoded result.
MakeObject(context, new IHardwareOpusDecoder(parameters.SampleRate, parameters.ChannelCount));
// Close transfer memory immediately as we don't use it.
context.Device.System.KernelContext.Syscall.CloseHandle(context.Request.HandleDesc.ToCopy[0]);
return(ResultCode.Success);
}
[CommandHipc(5)] // 12.0.0+
// GetWorkBufferSizeEx(OpusParametersEx) -> u32
public ResultCode GetWorkBufferSizeEx(ServiceCtx context)
{
OpusParametersEx parameters = context.RequestData.ReadStruct <OpusParametersEx>();
int opusDecoderSize = GetOpusDecoderSize(parameters.ChannelsCount);
int frameSizeMono48KHz = parameters.Flags.HasFlag(OpusDecoderFlags.LargeFrameSize) ? 5760 : 1920;
int frameSize = BitUtils.AlignUp(parameters.ChannelsCount * frameSizeMono48KHz / (48000 / parameters.SampleRate), 64);
int totalSize = opusDecoderSize + 1536 + frameSize;
context.ResponseData.Write(totalSize);
return(ResultCode.Success);
}
