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project/fm_viewer/fav/AudioOutputPortAudio.cpp
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291
project/fm_viewer/fav/AudioOutputPortAudio.cpp
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/******************************************************************************
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QtAV: Multimedia framework based on Qt and FFmpeg
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Copyright (C) 2012-2016 Wang Bin <wbsecg1@gmail.com>
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* This file is part of QtAV
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This library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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This library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with this library; if not, write to the Free Software
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Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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******************************************************************************/
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#define REMOVE_AUDIO_PORTAUDIO 0
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#if !(REMOVE_AUDIO_PORTAUDIO)
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#include "AudioOutputBackend.h"
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#include "mkid.h"
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#include "factory.h"
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#include <portaudio.h>
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#include "Logger.h"
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#if (SELECT_AUDIO_BACKEND)
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#include "../rm_settings.h"
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#endif
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#if (FILE_LOADING_TIMELAPSE)
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#include <QElapsedTimer>
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QElapsedTimer gPALoadingTimer;
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#endif
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namespace FAV {
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static const char kName[] = "PortAudio";
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class AudioOutputPortAudio Q_DECL_FINAL: public AudioOutputBackend
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{
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public:
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AudioOutputPortAudio(QObject *parent = 0);
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~AudioOutputPortAudio();
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QString name() const Q_DECL_FINAL { return QString::fromLatin1(kName);}
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QString status() const Q_DECL_OVERRIDE {return _status;};
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bool open() Q_DECL_FINAL;
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bool close() Q_DECL_FINAL;
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virtual BufferControl bufferControl() const Q_DECL_FINAL;
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virtual bool write(const QByteArray& data) Q_DECL_FINAL;
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virtual bool play() Q_DECL_FINAL { return true;}
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static bool initialized;
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private:
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PaStreamParameters *outputParameters;
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PaStream *stream;
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double outputLatency;
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QString _status;
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};
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typedef AudioOutputPortAudio AudioOutputBackendPortAudio;
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static const AudioOutputBackendId AudioOutputBackendId_PortAudio = mkid::id32base36_5<'P', 'o', 'r', 't', 'A'>::value;
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FACTORY_REGISTER(AudioOutputBackend, PortAudio, kName)
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bool AudioOutputPortAudio::initialized = false;
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AudioOutputPortAudio::AudioOutputPortAudio(QObject *parent)
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: AudioOutputBackend(AudioOutput::NoFeature, parent)
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// , initialized(false)
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, outputParameters(new PaStreamParameters)
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, stream(0)
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{
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//qInfo() << "PORTAUDIO VERSION:" << Pa_GetVersionText() << __FUNCTION__;
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_status = "\n";
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PaError err = paNoError;
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if ((err = Pa_Initialize()) != paNoError) {
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qWarning("Error when init portaudio: %s", Pa_GetErrorText(err));
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_status += " PORTAUDIO INIT ERROR\n";
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return;
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}
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initialized = true;
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int numDevices = Pa_GetDeviceCount();
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_status += QString().sprintf("\n PORTAUDIO NUM DEVICE:%d\n",numDevices);
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//qInfo() << QString().sprintf("\n PORTAUDIO NUM DEVICE:%d\n",numDevices);
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#if (SELECT_AUDIO_BACKEND)
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int selected = -1;
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QString selectedName = RMSettings::instance()->AudioDevice();
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//qInfo() << "selectedName:" << selectedName << __FUNCTION__;
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#endif
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for (int i = 0 ; i < numDevices ; ++i) {
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const PaDeviceInfo *deviceInfo = Pa_GetDeviceInfo(i);
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if (deviceInfo && deviceInfo->maxOutputChannels > 0) {
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const PaHostApiInfo *hostApiInfo = Pa_GetHostApiInfo(deviceInfo->hostApi);
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QString name = QString::fromUtf8(hostApiInfo->name) + QStringLiteral(": ") + QString::fromUtf8(deviceInfo->name); // QString::fromLocal8Bit(deviceInfo->name)
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//_status += (QString().sprintf(" PORTAUDIO DEVICE %d(%d):",i,hostApiInfo->defaultOutputDevice) + name + "\n");
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#if (SELECT_AUDIO_BACKEND)
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if(name.startsWith("Windows ")) {
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name = name.remove(0,QString("Windows ").length());
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}
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if(!selectedName.isEmpty() && selectedName == name) {
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selected = i;
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}
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#endif
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//qInfo() << (QString().sprintf(" PORTAUDIO DEVICE %d(%d):",i,hostApiInfo->defaultOutputDevice) + name) << "MAX CHANNEL:" << deviceInfo->maxOutputChannels << __FUNCTION__;
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// if(i == 3) {
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// hostApiInfo->defaultOutputDevice = 4;
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// }
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// for(int j=0;j<hostApiInfo->deviceCount;j++) {
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// }
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//qDebug("audio device %d: %s", i, name.toUtf8().constData());
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//qDebug("max in/out channels: %d/%d", deviceInfo->maxInputChannels, deviceInfo->maxOutputChannels);
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}
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}
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memset(outputParameters, 0, sizeof(PaStreamParameters));
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outputParameters->device = Pa_GetDefaultOutputDevice();
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#if (SELECT_AUDIO_BACKEND)
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if(selected >= 0) {
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outputParameters->device = selected;
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}
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#endif // SELECT_AUDIO_BACKEND
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//qInfo() << "SELECTED:" << outputParameters->device << __FUNCTION__;
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if (outputParameters->device == paNoDevice) {
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qWarning("PortAudio get device error!");
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return;
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}
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const PaDeviceInfo *deviceInfo = Pa_GetDeviceInfo(outputParameters->device);
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_status += (" PORTAUDIO SELECTED:" + QString::fromLocal8Bit(deviceInfo->name) + "\n");
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qDebug("DEFAULT max in/out channels: %d/%d", deviceInfo->maxInputChannels, deviceInfo->maxOutputChannels);
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qDebug("audio device: %s", QString::fromUtf8(Pa_GetDeviceInfo(outputParameters->device)->name).toUtf8().constData());
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outputParameters->hostApiSpecificStreamInfo = NULL;
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outputParameters->suggestedLatency = Pa_GetDeviceInfo(outputParameters->device)->defaultHighOutputLatency;
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}
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AudioOutputPortAudio::~AudioOutputPortAudio()
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{
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if (outputParameters) {
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delete outputParameters;
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outputParameters = 0;
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}
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//Do NOT call this if init failed. See document
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// WAAAAAAAA!!!!!
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if (initialized) {
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Pa_Terminate();
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initialized = false;
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}
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}
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AudioOutputBackend::BufferControl AudioOutputPortAudio::bufferControl() const
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{
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return Blocking;
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}
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bool AudioOutputPortAudio::write(const QByteArray& data)
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{
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if (Pa_IsStreamStopped(stream))
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Pa_StartStream(stream);
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PaError err = Pa_WriteStream(stream, data.constData(), data.size()/format.channels()/format.bytesPerSample());
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if (err == paUnanticipatedHostError) {
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//qInfo() << Pa_GetErrorText(err) << __FUNCTION__;
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//qWarning("Write portaudio stream error: %s", Pa_GetErrorText(err));
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return false;
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}
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return true;
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}
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//TODO: what about planar, int8, int24 etc that FFmpeg or Pa not support?
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static int toPaSampleFormat(AudioFormat::SampleFormat format)
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{
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switch (format) {
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case AudioFormat::SampleFormat_Unsigned8:
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return paUInt8;
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case AudioFormat::SampleFormat_Signed16:
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return paInt16;
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case AudioFormat::SampleFormat_Signed32:
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return paInt32;
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case AudioFormat::SampleFormat_Float:
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return paFloat32;
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default:
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return paCustomFormat;
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}
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}
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//TODO: call open after audio format changed?
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bool AudioOutputPortAudio::open()
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{
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outputParameters->sampleFormat = toPaSampleFormat(format.sampleFormat());
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outputParameters->channelCount = format.channels();
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//qInfo() << "PaSampleFormat:" << outputParameters->sampleFormat << " CHANNEL:" << outputParameters->channelCount << "SR:" << format.sampleRate();
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#if (FILE_LOADING_TIMELAPSE)
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gPALoadingTimer.start();
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#endif
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// buffer = 0
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PaError err = Pa_OpenStream(&stream, NULL, outputParameters, format.sampleRate(), 0 , paNoFlag, NULL, NULL);
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if(err == -9997) {
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err = Pa_OpenStream(&stream, NULL, outputParameters, 48000, 0, paNoFlag, NULL, NULL);
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}
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if (err != paNoError) {
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qInfo() << "Pa_OpenStream ERROR:" << err << Pa_GetErrorText(err) << __FUNCTION__;
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qWarning("Open portaudio stream error: %s", Pa_GetErrorText(err));
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return false;
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}
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#if (FILE_LOADING_TIMELAPSE)
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//qInfo() << "PA ELAPSED:" << gPALoadingTimer.elapsed();
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#endif
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outputLatency = Pa_GetStreamInfo(stream)->outputLatency;
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#if (FILE_LOADING_TIMELAPSE)
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//qInfo() << "PA ELAPSED:" << gPALoadingTimer.elapsed();
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#endif
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//qInfo() << "OPEN STREAM OK SR:" << format.sampleRate() << __FUNCTION__;
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return true;
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}
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bool AudioOutputPortAudio::close()
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{
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if (!stream) {
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return true;
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}
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PaError err = Pa_StopStream(stream); //may be already stopped: paStreamIsStopped
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if (err != paNoError) {
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qWarning("Stop portaudio stream error: %s", Pa_GetErrorText(err));
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//return err == paStreamIsStopped;
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}
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err = Pa_CloseStream(stream);
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if (err != paNoError) {
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qWarning("Close portaudio stream error: %s", Pa_GetErrorText(err));
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return false;
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}
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stream = NULL;
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// DO NOT TERMINATE!!!!
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// if (initialized)
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// Pa_Terminate(); //Do NOT call this if init failed. See document
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//qInfo() << "AudioOutputPortAudio::close() done";
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return true;
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}
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#if (SELECT_AUDIO_BACKEND)
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QList<QPair<QString,int>> globalSounddeviceList()
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{
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QList<QPair<QString,int>> ret;
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if(!AudioOutputPortAudio::initialized) {
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//qInfo() << "INIT PORT AUDIO" << __FUNCTION__;
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PaError err = paNoError;
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if ((err = Pa_Initialize()) != paNoError) {
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qWarning("Error when init portaudio: %s", Pa_GetErrorText(err));
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return ret;
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}
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}
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int numDevices = Pa_GetDeviceCount();
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for (int i = 0 ; i < numDevices ; ++i) {
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const PaDeviceInfo *deviceInfo = Pa_GetDeviceInfo(i);
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if (deviceInfo && deviceInfo->maxOutputChannels > 0) {
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const PaHostApiInfo *hostApiInfo = Pa_GetHostApiInfo(deviceInfo->hostApi);
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QString name = QString::fromUtf8(hostApiInfo->name) + QStringLiteral(": ") + QString::fromUtf8(deviceInfo->name);
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if(name.startsWith("Windows ")) {
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name = name.remove(0,QString("Windows ").length());
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}
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ret.append(QPair<QString,int>(name,i));
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}
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}
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if(!AudioOutputPortAudio::initialized) {
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Pa_Terminate();
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}
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return ret;
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}
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#endif // #if (SELECT_AUDIO_BACKEND)
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} //namespace FAV
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#endif // #if !(REMOVE_AUDIO_PORTAUDIO)
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