/* ScummVM - Graphic Adventure Engine * * ScummVM is the legal property of its developers, whose names * are too numerous to list here. Please refer to the COPYRIGHT * file distributed with this source distribution. * * 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, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. * */ #ifndef PSP_AUDIO_H #define PSP_AUDIO_H #include "backends/platform/psp/thread.h" class PspAudio : public PspThreadable { public: enum { NUM_BUFFERS = 2, FREQUENCY = 44100 /* only frequency we allow */ }; typedef void (* callbackFunc)(void *userData, byte *samples, int len); // audio callback to call PspAudio() : _pspChannel(0), _numOfChannels(0), _numOfSamples(0), _callback(0), _bufferToPlay(0), _bufferToFill(0), _init(false), _paused(true) { for (int i=0; i<NUM_BUFFERS; i++) _buffers[i] = 0; } ~PspAudio() { close(); } bool playBuffer(); void nextBuffer(int &bufferIdx); bool open(uint32 freq, uint32 numOfChannels, uint32 numOfSamples, callbackFunc callback, void *userData); void close(); uint32 getFrequency() { return FREQUENCY; } void pause() { _paused = true; } void unpause() { _paused = false; } virtual void threadFunction(); // actual audio thread private: int _pspChannel; // chosen hardware output channel uint32 _numOfChannels; // 1 for mono; 2 for stereo uint32 _numOfSamples; callbackFunc _callback; // the callback to call between outputting audio void *_userData; // userData to send with callback byte *_buffers[NUM_BUFFERS]; int _bufferToPlay; // the next buffer to output int _bufferToFill; int _bufferSize; bool _init; // flag for initialization bool _paused; }; #endif /* PSP_AUDIO_H */