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1 // VisualBoyAdvance - Nintendo Gameboy/GameboyAdvance (TM) emulator.
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2 // Copyright (C) 2008 VBA-M development team
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3
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4 // This program is free software; you can redistribute it and/or modify
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5 // it under the terms of the GNU General Public License as published by
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6 // the Free Software Foundation; either version 2, or(at your option)
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7 // any later version.
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8 //
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9 // This program is distributed in the hope that it will be useful,
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10 // but WITHOUT ANY WARRANTY; without even the implied warranty of
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11 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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12 // GNU General Public License for more details.
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13 //
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14 // You should have received a copy of the GNU General Public License
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15 // along with this program; if not, write to the Free Software Foundation,
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16 // Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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17
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18 #ifndef __VBA_SOUND_DRIVER_H__
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19 #define __VBA_SOUND_DRIVER_H__
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20
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21 #include "Types.h"
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22
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23 /**
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24 * Sound driver abstract interface for the core to use to output sound.
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25 * Subclass this to implement a new sound driver.
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26 */
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27 class SoundDriver
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28 {
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29 public:
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30
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31 /**
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32 * Destructor. Free the resources allocated by the sound driver.
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33 */
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34 virtual ~SoundDriver() { };
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35
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36 /**
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37 * Initialize the sound driver.
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38 * @param sampleRate In Hertz
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39 */
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40 virtual bool init() = 0;
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41
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42 /**
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43 * Tell the driver that the sound stream has paused
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44 */
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45 virtual void pause() = 0;
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46
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47 /**
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48 * Reset the sound driver
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49 */
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50 virtual void reset() = 0;
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51
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52 /**
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53 * Tell the driver that the sound stream has resumed
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54 */
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55 virtual void resume() = 0;
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56
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57 /**
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58 * Write length bytes of data from the finalWave buffer to the driver output buffer.
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59 */
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60 virtual void write(u16 * finalWave, int length) = 0;
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61
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62 virtual bool setThrottle(unsigned short throttle) = 0;
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63 };
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64
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65 #endif // __VBA_SOUND_DRIVER_H__
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