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author | tobigun <tobigun@b956fd51-792f-4845-bead-9b4dfca2ff2c> | 2008-09-13 08:27:50 +0000 |
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committer | tobigun <tobigun@b956fd51-792f-4845-bead-9b4dfca2ff2c> | 2008-09-13 08:27:50 +0000 |
commit | 4c6d2f4cd49a4f6016026ef81db31c3656bb5e8c (patch) | |
tree | 72762cd153a609ddd703f1b39829b5f427434826 /src/base/UAudioPlayback_Portaudio.pas | |
parent | 0bde0509f1c7911c3eaf64f7fa1442349859e942 (diff) | |
download | usdx-4c6d2f4cd49a4f6016026ef81db31c3656bb5e8c.tar.gz usdx-4c6d2f4cd49a4f6016026ef81db31c3656bb5e8c.tar.xz usdx-4c6d2f4cd49a4f6016026ef81db31c3656bb5e8c.zip |
Media modules moved from base to media
git-svn-id: svn://svn.code.sf.net/p/ultrastardx/svn/trunk@1374 b956fd51-792f-4845-bead-9b4dfca2ff2c
Diffstat (limited to 'src/base/UAudioPlayback_Portaudio.pas')
-rw-r--r-- | src/base/UAudioPlayback_Portaudio.pas | 361 |
1 files changed, 0 insertions, 361 deletions
diff --git a/src/base/UAudioPlayback_Portaudio.pas b/src/base/UAudioPlayback_Portaudio.pas deleted file mode 100644 index c3717ba6..00000000 --- a/src/base/UAudioPlayback_Portaudio.pas +++ /dev/null @@ -1,361 +0,0 @@ -unit UAudioPlayback_Portaudio; - -interface - -{$IFDEF FPC} - {$MODE Delphi} -{$ENDIF} - -{$I switches.inc} - - -uses - Classes, - SysUtils, - UMusic; - -implementation - -uses - portaudio, - UAudioCore_Portaudio, - UAudioPlayback_SoftMixer, - ULog, - UIni, - UMain; - -type - TAudioPlayback_Portaudio = class(TAudioPlayback_SoftMixer) - private - paStream: PPaStream; - AudioCore: TAudioCore_Portaudio; - Latency: double; - function OpenDevice(deviceIndex: TPaDeviceIndex): boolean; - function EnumDevices(): boolean; - protected - function InitializeAudioPlaybackEngine(): boolean; override; - function StartAudioPlaybackEngine(): boolean; override; - procedure StopAudioPlaybackEngine(); override; - function FinalizeAudioPlaybackEngine(): boolean; override; - function GetLatency(): double; override; - public - function GetName: String; override; - end; - - TPortaudioOutputDevice = class(TAudioOutputDevice) - private - PaDeviceIndex: TPaDeviceIndex; - end; - - -{ TAudioPlayback_Portaudio } - -function PortaudioAudioCallback(input: Pointer; output: Pointer; frameCount: Longword; - timeInfo: PPaStreamCallbackTimeInfo; statusFlags: TPaStreamCallbackFlags; - userData: Pointer): Integer; cdecl; -var - Engine: TAudioPlayback_Portaudio; -begin - Engine := TAudioPlayback_Portaudio(userData); - // update latency - Engine.Latency := timeInfo.outputBufferDacTime - timeInfo.currentTime; - // call superclass callback - Engine.AudioCallback(output, frameCount * Engine.FormatInfo.FrameSize); - Result := paContinue; -end; - -function TAudioPlayback_Portaudio.GetName: String; -begin - Result := 'Portaudio_Playback'; -end; - -function TAudioPlayback_Portaudio.OpenDevice(deviceIndex: TPaDeviceIndex): boolean; -var - DeviceInfo : PPaDeviceInfo; - SampleRate : double; - OutParams : TPaStreamParameters; - StreamInfo : PPaStreamInfo; - err : TPaError; -begin - Result := false; - - DeviceInfo := Pa_GetDeviceInfo(deviceIndex); - - Log.LogInfo('Audio-Output Device: ' + DeviceInfo^.name, 'TAudioPlayback_Portaudio.OpenDevice'); - - SampleRate := DeviceInfo^.defaultSampleRate; - - with OutParams do - begin - device := deviceIndex; - channelCount := 2; - sampleFormat := paInt16; - suggestedLatency := DeviceInfo^.defaultLowOutputLatency; - hostApiSpecificStreamInfo := nil; - end; - - // check souncard and adjust sample-rate - if not AudioCore.TestDevice(nil, @OutParams, SampleRate) then - begin - Log.LogStatus('TestDevice failed!', 'TAudioPlayback_Portaudio.OpenDevice'); - Exit; - end; - - // open output stream - err := Pa_OpenStream(paStream, nil, @OutParams, SampleRate, - paFramesPerBufferUnspecified, - paNoFlag, @PortaudioAudioCallback, Self); - if(err <> paNoError) then - begin - Log.LogStatus(Pa_GetErrorText(err), 'TAudioPlayback_Portaudio.OpenDevice'); - paStream := nil; - Exit; - end; - - // get estimated latency (will be updated with real latency in the callback) - StreamInfo := Pa_GetStreamInfo(paStream); - if (StreamInfo <> nil) then - Latency := StreamInfo^.outputLatency - else - Latency := 0; - - FormatInfo := TAudioFormatInfo.Create( - OutParams.channelCount, - SampleRate, - asfS16 // FIXME: is paInt16 system-dependant or -independant? - ); - - Result := true; -end; - -function TAudioPlayback_Portaudio.EnumDevices(): boolean; -var - i: integer; - paApiIndex: TPaHostApiIndex; - paApiInfo: PPaHostApiInfo; - deviceName: string; - deviceIndex: TPaDeviceIndex; - deviceInfo: PPaDeviceInfo; - channelCnt: integer; - SC: integer; // soundcard - err: TPaError; - errMsg: string; - paDevice: TPortaudioOutputDevice; - outputParams: TPaStreamParameters; - stream: PPaStream; - streamInfo: PPaStreamInfo; - sampleRate: double; - latency: TPaTime; - cbPolls: integer; - cbWorks: boolean; -begin - Result := false; - -(* - // choose the best available Audio-API - paApiIndex := AudioCore.GetPreferredApiIndex(); - if(paApiIndex = -1) then - begin - Log.LogError('No working Audio-API found', 'TAudioPlayback_Portaudio.EnumDevices'); - Exit; - end; - - paApiInfo := Pa_GetHostApiInfo(paApiIndex); - - SC := 0; - - // init array-size to max. output-devices count - SetLength(OutputDeviceList, paApiInfo^.deviceCount); - for i:= 0 to High(OutputDeviceList) do - begin - // convert API-specific device-index to global index - deviceIndex := Pa_HostApiDeviceIndexToDeviceIndex(paApiIndex, i); - deviceInfo := Pa_GetDeviceInfo(deviceIndex); - - channelCnt := deviceInfo^.maxOutputChannels; - - // current device is no output device -> skip - if (channelCnt <= 0) then - continue; - - // portaudio returns a channel-count of 128 for some devices - // (e.g. the "default"-device), so we have to detect those - // fantasy channel counts. - if (channelCnt > 8) then - channelCnt := 2; - - paDevice := TPortaudioOutputDevice.Create(); - OutputDeviceList[SC] := paDevice; - - // retrieve device-name - deviceName := deviceInfo^.name; - paDevice.Name := deviceName; - paDevice.PaDeviceIndex := deviceIndex; - - if (deviceInfo^.defaultSampleRate > 0) then - sampleRate := deviceInfo^.defaultSampleRate - else - sampleRate := 44100; - - // on vista and xp the defaultLowInputLatency may be set to 0 but it works. - // TODO: correct too low latencies (what is a too low latency, maybe < 10ms?) - latency := deviceInfo^.defaultLowInputLatency; - - // setup desired output parameters - // TODO: retry with input-latency set to 20ms (defaultLowOutputLatency might - // not be set correctly in OSS) - with outputParams do - begin - device := deviceIndex; - channelCount := channelCnt; - sampleFormat := paInt16; - suggestedLatency := latency; - hostApiSpecificStreamInfo := nil; - end; - - // check if mic-callback works (might not be called on some devices) - if (not TAudioCore_Portaudio.TestDevice(nil, @outputParams, sampleRate)) then - begin - // ignore device if callback did not work - Log.LogError('Device "'+paDevice.Name+'" does not respond', - 'TAudioPlayback_Portaudio.InitializeRecord'); - paDevice.Free(); - continue; - end; - - // open device for further info - err := Pa_OpenStream(stream, nil, @outputParams, sampleRate, - paFramesPerBufferUnspecified, paNoFlag, @MicrophoneTestCallback, nil); - if(err <> paNoError) then - begin - // unable to open device -> skip - errMsg := Pa_GetErrorText(err); - Log.LogError('Device error: "'+ deviceName +'" ('+ errMsg +')', - 'TAudioPlayback_Portaudio.InitializeRecord'); - paDevice.Free(); - continue; - end; - - // adjust sample-rate (might be changed by portaudio) - streamInfo := Pa_GetStreamInfo(stream); - if (streamInfo <> nil) then - begin - if (sampleRate <> streamInfo^.sampleRate) then - begin - Log.LogStatus('Portaudio changed Samplerate from ' + FloatToStr(sampleRate) + - ' to ' + FloatToStr(streamInfo^.sampleRate), - 'TAudioInput_Portaudio.InitializeRecord'); - sampleRate := streamInfo^.sampleRate; - end; - end; - - // create audio-format info and resize capture-buffer array - paDevice.AudioFormat := TAudioFormatInfo.Create( - channelCnt, - sampleRate, - asfS16 - ); - SetLength(paDevice.CaptureChannel, paDevice.AudioFormat.Channels); - - Log.LogStatus('OutputDevice "'+paDevice.Name+'"@' + - IntToStr(paDevice.AudioFormat.Channels)+'x'+ - FloatToStr(paDevice.AudioFormat.SampleRate)+'Hz ('+ - FloatTostr(outputParams.suggestedLatency)+'sec)' , - 'TAudioInput_Portaudio.InitializeRecord'); - - // close test-stream - Pa_CloseStream(stream); - - Inc(SC); - end; - - // adjust size to actual input-device count - SetLength(OutputDeviceList, SC); - - Log.LogStatus('#Output-Devices: ' + inttostr(SC), 'Portaudio'); -*) - - Result := true; -end; - -function TAudioPlayback_Portaudio.InitializeAudioPlaybackEngine(): boolean; -var - paApiIndex : TPaHostApiIndex; - paApiInfo : PPaHostApiInfo; - paOutDevice : TPaDeviceIndex; - err: TPaError; -begin - Result := false; - - AudioCore := TAudioCore_Portaudio.GetInstance(); - - // initialize portaudio - err := Pa_Initialize(); - if(err <> paNoError) then - begin - Log.LogError(Pa_GetErrorText(err), 'TAudioInput_Portaudio.InitializeRecord'); - Exit; - end; - - paApiIndex := AudioCore.GetPreferredApiIndex(); - if(paApiIndex = -1) then - begin - Log.LogError('No working Audio-API found', 'TAudioPlayback_Portaudio.InitializeAudioPlaybackEngine'); - Exit; - end; - - EnumDevices(); - - paApiInfo := Pa_GetHostApiInfo(paApiIndex); - Log.LogInfo('Audio-Output API-Type: ' + paApiInfo^.name, 'TAudioPlayback_Portaudio.OpenDevice'); - - paOutDevice := paApiInfo^.defaultOutputDevice; - if (not OpenDevice(paOutDevice)) then - begin - Exit; - end; - - Result := true; -end; - -function TAudioPlayback_Portaudio.StartAudioPlaybackEngine(): boolean; -var - err: TPaError; -begin - Result := false; - - if (paStream = nil) then - Exit; - - err := Pa_StartStream(paStream); - if(err <> paNoError) then - begin - Log.LogStatus('Pa_StartStream: '+Pa_GetErrorText(err), 'UAudioPlayback_Portaudio'); - Exit; - end; - - Result := true; -end; - -procedure TAudioPlayback_Portaudio.StopAudioPlaybackEngine(); -begin - if (paStream <> nil) then - Pa_StopStream(paStream); -end; - -function TAudioPlayback_Portaudio.FinalizeAudioPlaybackEngine(): boolean; -begin - Pa_Terminate(); - Result := true; -end; - -function TAudioPlayback_Portaudio.GetLatency(): double; -begin - Result := Latency; -end; - - -initialization - MediaManager.Add(TAudioPlayback_Portaudio.Create); - -end. |