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/*******************************************************************************
* Goggles Audio Player Library *
********************************************************************************
* Copyright (C) 2010-2021 by Sander Jansen. All Rights Reserved *
* --- *
* 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 3 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 READER_PLUGIN_H
#define READER_PLUGIN_H
#include "ap_format.h"
namespace ap {
class Packet;
class InputPlugin;
class AudioEngine;
class ConfigureEvent;
class MetaInfo;
enum ReadStatus {
ReadError, /* Error Occurred */
ReadOk,
ReadDone,
// ReadInterrupted,
ReadRedirect
};
class InputContext {
public:
virtual void post_configuration(ConfigureEvent*)=0;
virtual void post_meta(MetaInfo*)=0;
virtual void post_packet(Packet*)=0;
};
class ReaderPlugin {
public:
AudioFormat af;
InputContext * context = nullptr;
InputPlugin * input = nullptr;
protected:
FXuchar flags = 0;
FXlong stream_length = -1; /// Length of stream in samples
protected:
enum {
FLAG_PARSED = 0x1,
};
public:
ReaderPlugin(InputContext*);
/// Init plugin
virtual FXbool init(InputPlugin*);
/// Format type
virtual FXuchar format() const=0;
/// Return redirect list
virtual FXbool redirect(FXStringList&) { return false; }
/// Return whether plugin can seek
virtual FXbool can_seek() const { return false; }
/// Seek to sample
virtual FXbool seek(FXlong) { return false; }
// Get the seek offset for given percentage (0-1.0)
FXlong seek_offset(FXdouble) const;
/// Process Input
virtual ReadStatus process(Packet*);
/// Destructor
virtual ~ReaderPlugin();
/// Open plugin for given format
static ReaderPlugin* open(InputContext * ctx,FXuint format);
};
class TextReader : public ReaderPlugin {
protected:
FXString textbuffer;
public:
TextReader(InputContext*);
FXbool init(InputPlugin*) override;
ReadStatus process(Packet*) override;
virtual ~TextReader();
};
}
#endif
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