public HardwareDeviceImpl(IHardwareDeviceDriver deviceDriver, uint channelCount, uint sampleRate, float volume)
{
_session = deviceDriver.OpenDeviceSession(IHardwareDeviceDriver.Direction.Output, null, SampleFormat.PcmInt16, sampleRate, channelCount, volume);
_channelCount = channelCount;
_sampleRate = sampleRate;
_currentBufferTag = 0;
_buffer = new byte[Constants.TargetSampleCount * channelCount * sizeof(ushort)];
_session.Start();
}
/// <summary>
/// Open a new <see cref="AudioOutputSystem"/>.
/// </summary>
/// <param name="outputDeviceName">The output device name selected by the <see cref="AudioOutputSystem"/></param>
/// <param name="outputConfiguration">The output audio configuration selected by the <see cref="AudioOutputSystem"/></param>
/// <param name="obj">The new <see cref="AudioOutputSystem"/></param>
/// <param name="memoryManager">The memory manager that will be used for all guest memory operations</param>
/// <param name="inputDeviceName">The input device name wanted by the user</param>
/// <param name="sampleFormat">The sample format to use</param>
/// <param name="parameter">The user configuration</param>
/// <param name="appletResourceUserId">The applet resource user id of the application</param>
/// <param name="processHandle">The process handle of the application</param>
/// <returns>A <see cref="ResultCode"/> reporting an error or a success</returns>
public ResultCode OpenAudioOut(out string outputDeviceName,
out AudioOutputConfiguration outputConfiguration,
out AudioOutputSystem obj,
IVirtualMemoryManager memoryManager,
string inputDeviceName,
SampleFormat sampleFormat,
ref AudioInputConfiguration parameter,
ulong appletResourceUserId,
uint processHandle,
float volume)
{
int sessionId = AcquireSessionId();
_sessionsBufferEvents[sessionId].Clear();
IHardwareDeviceSession deviceSession = _deviceDriver.OpenDeviceSession(IHardwareDeviceDriver.Direction.Output, memoryManager, sampleFormat, parameter.SampleRate, parameter.ChannelCount, volume);
AudioOutputSystem audioOut = new AudioOutputSystem(this, _lock, deviceSession, _sessionsBufferEvents[sessionId]);
ResultCode result = audioOut.Initialize(inputDeviceName, sampleFormat, ref parameter, sessionId);
if (result == ResultCode.Success)
{
outputDeviceName = audioOut.DeviceName;
outputConfiguration = new AudioOutputConfiguration
{
ChannelCount = audioOut.ChannelCount,
SampleFormat = audioOut.SampleFormat,
SampleRate = audioOut.SampleRate,
AudioOutState = audioOut.GetState(),
};
obj = audioOut;
Register(audioOut);
}
else
{
ReleaseSessionId(sessionId);
obj = null;
outputDeviceName = null;
outputConfiguration = default;
}
return(result);
}
/// <summary>
/// Create a new <see cref="AudioDeviceSession"/>.
/// </summary>
/// <param name="deviceSession">The device driver session associated</param>
/// <param name="bufferEvent">The release buffer event</param>
/// <param name="bufferRegisteredLimit">The max number of buffers that can be registered to the device driver at a time</param>
public AudioDeviceSession(IHardwareDeviceSession deviceSession, IWritableEvent bufferEvent, uint bufferRegisteredLimit = 4)
{
_bufferEvent = bufferEvent;
_hardwareDeviceSession = deviceSession;
_bufferRegisteredLimit = bufferRegisteredLimit;
_buffers = new AudioBuffer[Constants.AudioDeviceBufferCountMax];
_serverBufferIndex = 0;
_hardwareBufferIndex = 0;
_releasedBufferIndex = 0;
_bufferAppendedCount = 0;
_bufferRegisteredCount = 0;
_bufferReleasedCount = 0;
_volume = 1.0f;
_state = AudioDeviceState.Stopped;
}
/// <summary>
/// Create a new <see cref="AudioOutputSystem"/>.
/// </summary>
/// <param name="manager">The manager instance</param>
/// <param name="parentLock">The lock of the manager</param>
/// <param name="deviceSession">The hardware device session</param>
/// <param name="bufferEvent">The buffer release event of the audio output</param>
public AudioOutputSystem(AudioOutputManager manager, object parentLock, IHardwareDeviceSession deviceSession, IWritableEvent bufferEvent)
{
_manager = manager;
_parentLock = parentLock;
_session = new AudioDeviceSession(deviceSession, bufferEvent);
}
