Example #1
0
        private void InitializeInternal()
        {
            const int reftimesPerMillisecond = 10000;

            _audioClient = AudioClient.FromMMDevice(Device);
            _outputFormat = SetupWaveFormat(_source, _audioClient);

            long latency = _latency * reftimesPerMillisecond;
            AUDCLNT_E_BUFFER_SIZE_NOT_ALIGNED_TRY_AGAIN:
            try
            {

                if (!_eventSync)
                    _audioClient.Initialize(_shareMode, AudioClientStreamFlags.None, latency, 0, _outputFormat,
                        Guid.Empty);
                else //event sync
                {
                    if (_shareMode == AudioClientShareMode.Exclusive) //exclusive
                    {
                        _audioClient.Initialize(_shareMode, AudioClientStreamFlags.StreamFlagsEventCallback, latency,
                            latency, _outputFormat, Guid.Empty);
                    }
                    else //shared
                    {
                        _audioClient.Initialize(_shareMode, AudioClientStreamFlags.StreamFlagsEventCallback, 0, 0,
                            _outputFormat, Guid.Empty);
                        //latency = (int)(_audioClient.StreamLatency / reftimesPerMillisecond);
                    }
                }
            }
            catch (CoreAudioAPIException exception)
            {
                if (exception.ErrorCode == unchecked((int)0x88890019)) //AUDCLNT_E_BUFFER_SIZE_NOT_ALIGNED
                {
                    const long reftimesPerSec = 10000000;
                    int framesInBuffer = _audioClient.GetBufferSize();
                    // ReSharper disable once PossibleLossOfFraction
                    latency = (int)(reftimesPerSec * framesInBuffer / _outputFormat.SampleRate + 0.5);
                    goto AUDCLNT_E_BUFFER_SIZE_NOT_ALIGNED_TRY_AGAIN;
                }
                throw;
            }

            if (_audioClient.StreamLatency != 0) //windows 10 returns zero, got no idea why => https://github.com/filoe/cscore/issues/11
            {
                Latency = (int)(_audioClient.StreamLatency / reftimesPerMillisecond);
            }

            if (_eventSync)
            {
                _eventWaitHandle = new EventWaitHandle(false, EventResetMode.AutoReset);
                _audioClient.SetEventHandle(_eventWaitHandle.SafeWaitHandle.DangerousGetHandle());
            }

            _renderClient = AudioRenderClient.FromAudioClient(_audioClient);
        }
Example #2
0
        private void InitializeInternal()
        {
            _audioClient = AudioClient.FromMMDevice(Device);
            _outputFormat = SetupWaveFormat(_source.WaveFormat, _audioClient);

            long latency = _latency * 10000;

            if (!_eventSync)
            {
                _audioClient.Initialize(_shareMode, AudioClientStreamFlags.None, latency, 0, _outputFormat, Guid.Empty);
            }
            else //event sync
            {
                if (_shareMode == AudioClientShareMode.Exclusive) //exclusive
                {
                    _audioClient.Initialize(_shareMode, AudioClientStreamFlags.StreamFlags_EventCallback, latency, latency, _outputFormat, Guid.Empty);
                }
                else //shared
                {
                    _audioClient.Initialize(_shareMode, AudioClientStreamFlags.StreamFlags_EventCallback, 0, 0, _outputFormat, Guid.Empty);
                    _latency = (int)(_audioClient.StreamLatency / 10000);
                }

                _eventWaitHandle = new EventWaitHandle(false, EventResetMode.AutoReset);
                _audioClient.SetEventHandle(_eventWaitHandle.SafeWaitHandle.DangerousGetHandle());
            }

            _renderClient = AudioRenderClient.FromAudioClient(_audioClient);
            _simpleAudioVolume = SimpleAudioVolume.FromAudioClient(_audioClient);
            _simpleAudioVolume.MasterVolume = 1f;
        }