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0001 /*
0002  * Copyright 2023 by Aditya Mehra <aix.m@outlook.com>
0003  *
0004  * Licensed under the Apache License, Version 2.0 (the "License");
0005  * you may not use this file except in compliance with the License.
0006  * You may obtain a copy of the License at
0007  *
0008  *    http://www.apache.org/licenses/LICENSE-2.0
0009  *
0010  * Unless required by applicable law or agreed to in writing, software
0011  * distributed under the License is distributed on an "AS IS" BASIS,
0012  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
0013  * See the License for the specific language governing permissions and
0014  * limitations under the License.
0015  *
0016  */
0017 
0018 #ifndef AUDIOPROVIDERSERVICE_H
0019 #define AUDIOPROVIDERSERVICE_H
0020 
0021 #include <QObject>
0022 #include <QUrl>
0023 #include <QAudioSink>
0024 #include <QAudioFormat>
0025 #include <QAudioDevice>
0026 #include <QMediaDevices>
0027 #include <QEventLoop>
0028 #include "audiostreamdevice.h"
0029 
0030 class AudioProviderService : public QObject
0031 {
0032     Q_OBJECT
0033 
0034 public:
0035     enum PlaybackState {
0036         PlayingState = 1,
0037         PausedState = 2,
0038         StoppedState = 0
0039     };
0040 
0041     enum MediaState {
0042         NoMedia = 0,
0043         LoadingMedia = 1,
0044         LoadedMedia = 2,
0045         StalledMedia = 3,
0046         BufferingMedia = 4,
0047         BufferedMedia = 5,
0048         EndOfMedia = 6,
0049         InvalidMedia = 7
0050     };
0051 
0052     explicit AudioProviderService(QObject *parent = nullptr);
0053     ~AudioProviderService();
0054     void syncStates();
0055     void mediaPlay(const QUrl &url);
0056     void mediaStop();
0057     void mediaPause();
0058     void mediaContinue();
0059     void mediaRestart();
0060     void mediaSeek(qint64 seekValue);
0061 
0062 public Q_SLOTS:
0063     void notifyBufferingMedia();
0064     void notifyBufferedMedia();
0065     void notifyStalledMedia();
0066     void notifyEndOfMedia();
0067     void notifyInvalidMedia();
0068     void spectrumUpdated(QVector<double> spectrum);
0069     void durationUpdated(qint64 duration);
0070     void positionUpdated(qint64 position);
0071 
0072 Q_SIGNALS:
0073     int levels(double left, double right);
0074     void spectrumChanged(QVector<double> spectrum);
0075     void playBackStateChanged(AudioProviderService::PlaybackState playbackState);
0076     void mediaStateChanged(AudioProviderService::MediaState mediaState);
0077     void positionChanged(qint64 position);
0078     void durationChanged(qint64 duration);
0079     void destroyedService();
0080 
0081 private:
0082     AudioStreamDevice *m_audioStreamDevice;
0083     AudioProviderService::PlaybackState m_currentPlaybackState;
0084     AudioProviderService::MediaState m_currentMediaState;
0085     QAudioSink *m_audioSink;
0086     QAudioFormat m_format;
0087     QUrl m_currentMediaUrl;
0088     QVector<double> m_spectrum;
0089 };
0090 
0091 #endif //AUDIOPROVIDERSERVICE_H