[CommandHipc(7)] // 12.0.0+ // GetWorkBufferSizeForMultiStreamEx(buffer<unknown<0x118>, 0x19>) -> u32 public ResultCode GetWorkBufferSizeForMultiStreamEx(ServiceCtx context) { ulong parametersAddress = context.Request.PtrBuff[0].Position; OpusMultiStreamParametersEx parameters = context.Memory.Read <OpusMultiStreamParametersEx>(parametersAddress); int opusDecoderSize = GetOpusMultistreamDecoderSize(parameters.NumberOfStreams, parameters.NumberOfStereoStreams); int frameSizeMono48KHz = parameters.Flags.HasFlag(OpusDecoderFlags.LargeFrameSize) ? 5760 : 1920; int streamSize = BitUtils.AlignUp(parameters.NumberOfStreams * 1500, 64); int frameSize = BitUtils.AlignUp(parameters.ChannelsCount * frameSizeMono48KHz / (48000 / parameters.SampleRate), 64); int totalSize = opusDecoderSize + streamSize + frameSize; context.ResponseData.Write(totalSize); return(ResultCode.Success); }
[CommandHipc(6)] // 12.0.0+ // InitializeForMultiStreamEx(u32, handle<copy>, buffer<unknown<0x118>, 0x19>) -> object<nn::codec::detail::IHardwareOpusDecoder> public ResultCode InitializeForMultiStreamEx(ServiceCtx context) { ulong parametersAddress = context.Request.PtrBuff[0].Position; OpusMultiStreamParametersEx parameters = context.Memory.Read <OpusMultiStreamParametersEx>(parametersAddress); byte[] mappings = MemoryMarshal.Cast <uint, byte>(parameters.ChannelMappings.AsSpan()).ToArray(); // UseLargeFrameSize can be ignored due to not relying on fixed size buffers for storing the decoded result. MakeObject(context, new IHardwareOpusDecoder( parameters.SampleRate, parameters.ChannelsCount, parameters.NumberOfStreams, parameters.NumberOfStereoStreams, parameters.Flags, mappings)); // Close transfer memory immediately as we don't use it. context.Device.System.KernelContext.Syscall.CloseHandle(context.Request.HandleDesc.ToCopy[0]); return(ResultCode.Success); }