68 lines
1.8 KiB
C
68 lines
1.8 KiB
C
/*
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** aldatasource.h
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**
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** This file is part of mkxp.
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**
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** Copyright (C) 2014 - 2021 Amaryllis Kulla <ancurio@mapleshrine.eu>
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**
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** mkxp is free software: you can redistribute it and/or modify
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** it under the terms of the GNU General Public License as published by
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** the Free Software Foundation, either version 2 of the License, or
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** (at your option) any later version.
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**
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** mkxp is distributed in the hope that it will be useful,
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** but WITHOUT ANY WARRANTY; without even the implied warranty of
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** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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** GNU General Public License for more details.
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**
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** You should have received a copy of the GNU General Public License
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** along with mkxp. If not, see <http://www.gnu.org/licenses/>.
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*/
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#ifndef ALDATASOURCE_H
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#define ALDATASOURCE_H
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#include "al-util.h"
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struct ALDataSource
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{
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enum Status
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{
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NoError,
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EndOfStream,
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WrapAround,
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Error
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};
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virtual ~ALDataSource() {}
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/* Read/process next chunk of data, and attach it
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* to provided AL buffer */
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virtual Status fillBuffer(AL::Buffer::ID alBuffer) = 0;
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virtual int sampleRate() = 0;
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/* If the source doesn't support seeking, it will
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* reset back to the beginning */
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virtual void seekToOffset(float seconds) = 0;
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/* The frame count right after wrap around */
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virtual uint32_t loopStartFrames() = 0;
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/* Returns false if not supported */
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virtual bool setPitch(float value) = 0;
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};
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ALDataSource *createSDLSource(SDL_RWops &ops,
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const char *extension,
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uint32_t maxBufSize,
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bool looped);
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ALDataSource *createVorbisSource(SDL_RWops &ops,
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bool looped);
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ALDataSource *createMidiSource(SDL_RWops &ops,
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bool looped);
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#endif // ALDATASOURCE_H
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