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/* ScummVM - Scumm Interpreter
 * Copyright (C) 2001-2006 The ScummVM project
 * Copyright (C) 2002 Ph0x - GP32 Backend
 * Copyright (C) 2003/2004 DJWillis - GP32 Backend
 * Copyright (C) 2005 Won Star - GP32 Backend
 * 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
 * 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.
 * $URL: https://svn.sourceforge.net/svnroot/scummvm/scummvm/tags/release-0-9-1/backends/gp32/gp32std_sound.h $
 * $Id: gp32std_sound.h 20535 2006-02-11 12:47:47Z fingolfin $

#ifndef __GP32STD_SOUND_H
#define __GP32STD_SOUND_H

// GPSOUNDBUF.userdata / Pointer to the buffer which needs to be refilled / Length of the buffer in bytes
typedef void SoundProc(void *param, byte *buf, int len);

typedef struct TGPSOUNDBUF {
      int32 freq;
      uint16 format;
      uint16 samples;                     // Buffer length (in samples)
      uint16 channels;
      uint16 padding;                     // Fix alignment problem
      void *userdata;                     // Userdata which gets passed to the callback function
      SoundProc *callback;          // Callback function (just like in SDL)
      unsigned int pollfreq;        // Frequency of the timer interrupt which polls the playing position
                                                // recommended value: 2*(playingfreq in Hz/GPSOUNDBUF.samples)
      unsigned int samplesize;      // Size of one sample (8bit mono->1, 16bit stereo->4) - don't touch this

int gp_soundBufStart(GPSOUNDBUF *sb);
void gp_soundBufStop();


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