mkxp/src/aldatasource.h

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/*
** aldatasource.h
**
** This file is part of mkxp.
**
** Copyright (C) 2014 Jonas Kulla <Nyocurio@gmail.com>
**
** mkxp 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.
**
** mkxp 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 mkxp. If not, see <http://www.gnu.org/licenses/>.
*/
#ifndef ALDATASOURCE_H
#define ALDATASOURCE_H
#include "al-util.h"
struct ALDataSource
{
enum Status
{
NoError,
EndOfStream,
WrapAround,
Error
};
virtual ~ALDataSource() {}
/* Read/process next chunk of data, and attach it
* to provided AL buffer */
virtual Status fillBuffer(AL::Buffer::ID alBuffer) = 0;
virtual int sampleRate() = 0;
/* If the source doesn't support seeking, it will
* reset back to the beginning */
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virtual void seekToOffset(float seconds) = 0;
/* The frame count right after wrap around */
virtual uint32_t loopStartFrames() = 0;
/* Returns false if not supported */
virtual bool setPitch(float value) = 0;
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};
ALDataSource *createSDLSource(SDL_RWops &ops,
const char *extension,
uint32_t maxBufSize,
bool looped);
#ifdef RGSS2
ALDataSource *createVorbisSource(SDL_RWops &ops,
bool looped);
#endif
#ifdef MIDI
ALDataSource *createMidiSource(SDL_RWops &ops,
bool looped);
#endif
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#endif // ALDATASOURCE_H