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/****************************************************************************
encoder.h - encoder API for mixxx
-------------------
copyright : (C) 2009 by Phillip Whelan
copyright : (C) 2010 by Tobias Rafreider
copyright : (C) 2017 by Josep Maria Antolín
***************************************************************************/
#ifndef ENCODER_H
#define ENCODER_H
#include "util/memory.h"
#include "util/types.h"
#include "preferences/usersettings.h"
#include "encoder/encodersettings.h"
#include "encoder/encoderrecordingsettings.h"
#include "encoder/encodercallback.h"
class Encoder {
public:
class Format {
public:
Format(QString labelIn, QString nameIn, bool losslessIn) :
label(labelIn), internalName(nameIn), lossless(losslessIn) {}
QString label;
QString internalName;
bool lossless;
};
Encoder() {}
virtual ~Encoder() = default;
virtual int initEncoder(int samplerate, QString errorMessage) = 0;
// encodes the provided buffer of audio.
virtual void encodeBuffer(const CSAMPLE *samples, const int size) = 0;
// Adds metadata to the encoded audio, i.e., the ID3 tag. Currently only used
// by EngineRecord, ShoutConnection does something different.
virtual void updateMetaData(const QString& artist, const QString& title, const QString& album) = 0;
// called at the end when encoding is finished
virtual void flush() = 0;
// Setup the encoder with the specific settings
virtual void setEncoderSettings(const EncoderSettings& settings) = 0;
};
typedef std::shared_ptr<Encoder> EncoderPointer;
class EncoderFactory {
private:
EncoderFactory();
public:
static const EncoderFactory& getFactory();
const QList<Encoder::Format> getFormats() const;
Encoder::Format getSelectedFormat(UserSettingsPointer pConfig) const;
Encoder::Format getFormatFor(QString format) const;
EncoderPointer createRecordingEncoder(
Encoder::Format format,
UserSettingsPointer pConfig,
EncoderCallback* pCallback) const;
EncoderPointer createEncoder(
EncoderSettingsPointer pSettings,
EncoderCallback* pCallback) const;
EncoderRecordingSettingsPointer getEncoderRecordingSettings(
Encoder::Format format,
UserSettingsPointer pConfig) const;
private:
static EncoderFactory factory;
QList<Encoder::Format> m_formats;
};
#endif // ENCODER_H
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