File indexing completed on 2024-05-05 04:48:35

 /****************************************************************************************
  * Copyright (c) 2010 Sergey Ivanov <123kash@gmail.com>                                 *
  *                                                                                      *
  * This program is free software; you can redistribute it and/or modify it under        *
  * the terms of the GNU General Public License as published by the Free Software        *
  * Foundation; either version 2 of the License, or (at your option) any later           *
  * version.                                                                             *
  *                                                                                      *
  * This program is distributed in the hope that it will be useful, but WITHOUT ANY      *
  * WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A      *
  * PARTICULAR PURPOSE. See the GNU General Public License for more details.             *
  *                                                                                      *
  * You should have received a copy of the GNU General Public License along with         *
  * this program.  If not, see <http://www.gnu.org/licenses/>.                           *
  ****************************************************************************************/
 
 #ifndef MUSICDNSAUDIODECODER_H
 #define MUSICDNSAUDIODECODER_H
 
 #include "core/meta/forward_declarations.h"
 
 #include <ThreadWeaver/Job>
 
 #define DEFAULT_SAMPLE_LENGTH 135000
 #define MIN_SAMPLE_LENGTH 10000
 
 class DecodedAudioData
 {
     public:
         DecodedAudioData();
         ~DecodedAudioData();
 
         int sRate();
         void setSampleRate( const int sampleRate );
 
         quint8 channels();
         void setChannels( const quint8 channels );
 
         int length();
         qint64 duration();
         void addTime( const qint64 ms );
 
         const char *data();
 
         void appendData( const quint8 *data, int length );
         DecodedAudioData &operator<< ( const quint8 &byte );
 
         void flush();
 
     private:
         int m_sRate;
         quint8 m_channels;
         qint64 m_duration;
 
         QByteArray *m_data;
 };
 
 class MusicDNSAudioDecoder : public QObject, public ThreadWeaver::Job
 {
     Q_OBJECT
     public:
         explicit MusicDNSAudioDecoder( const Meta::TrackList &tracks, const int sampleLength = DEFAULT_SAMPLE_LENGTH );
         ~MusicDNSAudioDecoder() override;
 
         void run(ThreadWeaver::JobPointer self = QSharedPointer<ThreadWeaver::Job>(), ThreadWeaver::Thread *thread = nullptr) override;
 
     Q_SIGNALS:
         void trackDecoded( const Meta::TrackPtr, const QString );
 
         /** This signal is emitted when this job is being processed by a thread. */
         void started(ThreadWeaver::JobPointer);
         /** This signal is emitted when the job has been finished (no matter if it succeeded or not). */
         void done(ThreadWeaver::JobPointer);
         /** This job has failed.
          * This signal is emitted when success() returns false after the job is executed. */
         void failed(ThreadWeaver::JobPointer);
 
     private:
         int decode( const QString &fileName, DecodedAudioData *data, const int length );
 
         Meta::TrackList m_tracks;
         int m_sampleLength;
 
     protected:
         void defaultBegin(const ThreadWeaver::JobPointer& job, ThreadWeaver::Thread *thread) override;
         void defaultEnd(const ThreadWeaver::JobPointer& job, ThreadWeaver::Thread *thread) override;
 
 };
 
 #endif // MUSICDNSAUDIODECODER_H