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using Concentus;
using Concentus.Enums;
using Concentus.Structs;
using Ryujinx.HLE.HOS.Services.Audio.Types;
using System;
using System.IO;
using System.Runtime.InteropServices;
namespace Ryujinx.HLE.HOS.Services.Audio.HardwareOpusDecoderManager
{
class IHardwareOpusDecoder : IpcService
{
private int _sampleRate;
private int _channelsCount;
private bool _reset;
private OpusDecoder _decoder;
public IHardwareOpusDecoder(int sampleRate, int channelsCount)
{
_sampleRate = sampleRate;
_channelsCount = channelsCount;
_reset = false;
_decoder = new OpusDecoder(sampleRate, channelsCount);
}
private ResultCode GetPacketNumSamples(out int numSamples, byte[] packet)
{
int result = OpusPacketInfo.GetNumSamples(_decoder, packet, 0, packet.Length);
numSamples = result;
if (result == OpusError.OPUS_INVALID_PACKET)
{
return ResultCode.OpusInvalidInput;
}
else if (result == OpusError.OPUS_BAD_ARG)
{
return ResultCode.OpusInvalidInput;
}
return ResultCode.Success;
}
private ResultCode DecodeInterleavedInternal(BinaryReader input, out short[] outPcmData, long outputSize, out uint outConsumed, out int outSamples)
{
outPcmData = null;
outConsumed = 0;
outSamples = 0;
long streamSize = input.BaseStream.Length;
if (streamSize < Marshal.SizeOf<OpusPacketHeader>())
{
return ResultCode.OpusInvalidInput;
}
OpusPacketHeader header = OpusPacketHeader.FromStream(input);
uint totalSize = header.length + (uint)Marshal.SizeOf<OpusPacketHeader>();
if (totalSize > streamSize)
{
return ResultCode.OpusInvalidInput;
}
byte[] opusData = input.ReadBytes((int)header.length);
ResultCode result = GetPacketNumSamples(out int numSamples, opusData);
if (result == ResultCode.Success)
{
if ((uint)numSamples * (uint)_channelsCount * sizeof(short) > outputSize)
{
return ResultCode.OpusInvalidInput;
}
outPcmData = new short[numSamples * _channelsCount];
if (_reset)
{
_reset = false;
_decoder.ResetState();
}
try
{
outSamples = _decoder.Decode(opusData, 0, opusData.Length, outPcmData, 0, outPcmData.Length / _channelsCount);
outConsumed = totalSize;
}
catch (OpusException)
{
// TODO: as OpusException doesn't provide us the exact error code, this is kind of inaccurate in some cases...
return ResultCode.OpusInvalidInput;
}
}
return ResultCode.Success;
}
[CommandHipc(0)]
// DecodeInterleaved(buffer<unknown, 5>) -> (u32, u32, buffer<unknown, 6>)
public ResultCode DecodeInterleavedOriginal(ServiceCtx context)
{
ResultCode result;
ulong inPosition = context.Request.SendBuff[0].Position;
ulong inSize = context.Request.SendBuff[0].Size;
ulong outputPosition = context.Request.ReceiveBuff[0].Position;
ulong outputSize = context.Request.ReceiveBuff[0].Size;
byte[] buffer = new byte[inSize];
context.Memory.Read(inPosition, buffer);
using (BinaryReader inputStream = new BinaryReader(new MemoryStream(buffer)))
{
result = DecodeInterleavedInternal(inputStream, out short[] outPcmData, (long)outputSize, out uint outConsumed, out int outSamples);
if (result == ResultCode.Success)
{
byte[] pcmDataBytes = new byte[outPcmData.Length * sizeof(short)];
Buffer.BlockCopy(outPcmData, 0, pcmDataBytes, 0, pcmDataBytes.Length);
context.Memory.Write(outputPosition, pcmDataBytes);
context.ResponseData.Write(outConsumed);
context.ResponseData.Write(outSamples);
}
}
return result;
}
[CommandHipc(4)] // 6.0.0+
// DecodeInterleavedWithPerfOld(buffer<unknown, 5>) -> (u32, u32, u64, buffer<unknown, 0x46>)
public ResultCode DecodeInterleavedWithPerfOld(ServiceCtx context)
{
ResultCode result;
ulong inPosition = context.Request.SendBuff[0].Position;
ulong inSize = context.Request.SendBuff[0].Size;
ulong outputPosition = context.Request.ReceiveBuff[0].Position;
ulong outputSize = context.Request.ReceiveBuff[0].Size;
byte[] buffer = new byte[inSize];
context.Memory.Read(inPosition, buffer);
using (BinaryReader inputStream = new BinaryReader(new MemoryStream(buffer)))
{
result = DecodeInterleavedInternal(inputStream, out short[] outPcmData, (long)outputSize, out uint outConsumed, out int outSamples);
if (result == ResultCode.Success)
{
byte[] pcmDataBytes = new byte[outPcmData.Length * sizeof(short)];
Buffer.BlockCopy(outPcmData, 0, pcmDataBytes, 0, pcmDataBytes.Length);
context.Memory.Write(outputPosition, pcmDataBytes);
context.ResponseData.Write(outConsumed);
context.ResponseData.Write(outSamples);
// This is the time the DSP took to process the request, TODO: fill this.
context.ResponseData.Write(0);
}
}
return result;
}
[CommandHipc(6)] // 6.0.0+
// DecodeInterleavedOld(bool reset, buffer<unknown, 5>) -> (u32, u32, u64, buffer<unknown, 0x46>)
public ResultCode DecodeInterleavedOld(ServiceCtx context)
{
ResultCode result;
_reset = context.RequestData.ReadBoolean();
ulong inPosition = context.Request.SendBuff[0].Position;
ulong inSize = context.Request.SendBuff[0].Size;
ulong outputPosition = context.Request.ReceiveBuff[0].Position;
ulong outputSize = context.Request.ReceiveBuff[0].Size;
byte[] buffer = new byte[inSize];
context.Memory.Read(inPosition, buffer);
using (BinaryReader inputStream = new BinaryReader(new MemoryStream(buffer)))
{
result = DecodeInterleavedInternal(inputStream, out short[] outPcmData, (long)outputSize, out uint outConsumed, out int outSamples);
if (result == ResultCode.Success)
{
byte[] pcmDataBytes = new byte[outPcmData.Length * sizeof(short)];
Buffer.BlockCopy(outPcmData, 0, pcmDataBytes, 0, pcmDataBytes.Length);
context.Memory.Write(outputPosition, pcmDataBytes);
context.ResponseData.Write(outConsumed);
context.ResponseData.Write(outSamples);
// This is the time the DSP took to process the request, TODO: fill this.
context.ResponseData.Write(0);
}
}
return result;
}
[CommandHipc(8)] // 7.0.0+
// DecodeInterleaved(bool reset, buffer<unknown, 0x45>) -> (u32, u32, u64, buffer<unknown, 0x46>)
public ResultCode DecodeInterleaved(ServiceCtx context)
{
ResultCode result;
_reset = context.RequestData.ReadBoolean();
ulong inPosition = context.Request.SendBuff[0].Position;
ulong inSize = context.Request.SendBuff[0].Size;
ulong outputPosition = context.Request.ReceiveBuff[0].Position;
ulong outputSize = context.Request.ReceiveBuff[0].Size;
byte[] buffer = new byte[inSize];
context.Memory.Read(inPosition, buffer);
using (BinaryReader inputStream = new BinaryReader(new MemoryStream(buffer)))
{
result = DecodeInterleavedInternal(inputStream, out short[] outPcmData, (long)outputSize, out uint outConsumed, out int outSamples);
if (result == ResultCode.Success)
{
byte[] pcmDataBytes = new byte[outPcmData.Length * sizeof(short)];
Buffer.BlockCopy(outPcmData, 0, pcmDataBytes, 0, pcmDataBytes.Length);
context.Memory.Write(outputPosition, pcmDataBytes);
context.ResponseData.Write(outConsumed);
context.ResponseData.Write(outSamples);
// This is the time the DSP took to process the request, TODO: fill this.
context.ResponseData.Write(0);
}
}
return result;
}
}
}
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