/*
 * This file is part of the Advance project
 *
 * Copyright (C) 2002 Shigeaki Sakamaki
 * Copyright (C) 2002 Andrea Mazzoleni
 *
 * 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., 675 Mass Ave, Cambridge, MA 02139, USA.
 *
 * In addition, as a special exception, Andrea Mazzoleni
 * gives permission to link the code of this program with
 * the MAME library (or with modified versions of MAME that use the
 * same license as MAME), and distribute linked combinations including
 * the two.  You must obey the GNU General Public License in all
 * respects for all of the code used other than MAME.  If you modify
 * this file, you may extend this exception to your version of the
 * file, but you are not obligated to do so.  If you do not wish to
 * do so, delete this exception statement from your version.
 */

/*
 * This file is an adaption of the VSyncMAME audio drivers written by
 * Shigeaki Sakamaki. It also contains some snipsets from the projects
 * Allegro (Allegro License) and ALSA (GPL/LGPL License) which have a
 * GPL compatible license.
 */

/*****************************************************************************/
/* wss.h from the VSyncMAME source */

#ifndef X86DATATYPE
typedef unsigned char		BYTE;
typedef unsigned short		WORD;
typedef unsigned long		DWORD;
typedef int BOOL;
#define X86DATATYPE
#endif

#ifndef FALSE
#define FALSE	0
#endif

#ifndef TRUE
#define TRUE	!FALSE
#endif


int w_sound_device_init(int device_no, int rate_no);
void w_sound_device_exit(void);

void w_clear_buffer(void);
DWORD w_get_buffer_size(void);

void w_set_device_master_volume(int volume);
void w_set_master_volume(int volume);
void w_reverse_stereo(int flag);
void w_set_sb_cursor_offset(int offset);

void w_set_watermark(float latency, DWORD samples_per_frame);
int w_get_watermark_status(void);

void w_reset_watermark(void);
void w_reset_watermark_ex(DWORD samplecount);
void w_reset_write_cursor(DWORD samplecount);

DWORD w_get_play_cursor(void);
DWORD w_get_write_cursor(void);
void w_set_write_cursor(DWORD position);
DWORD w_calc_distance(DWORD cursor1, DWORD cursor2);
DWORD w_calc_position(DWORD cursor1, DWORD cursor2);

DWORD w_get_requested_sample_count(void);
DWORD w_get_latency(void);
DWORD w_adjust_latency_for_vsync(void);


DWORD w_get_nominal_sample_rate(void);
DWORD w_get_actual_sample_rate(void);
float w_calc_samples_per_vsync(void (*__vsync)(void), int vsync_count);

char *w_get_device_name(void);
char *w_get_error_message(void);







DWORD w_get_current_req(void);
DWORD w_get_next_req(void);



void w_lock_mixing_buffer(int currentsamplecount);
void w_unlock_mixing_buffer(void);
void w_mixing(short data[], DWORD length, int leftvol, int rightvol);
void w_mixing_stereo(short data[], DWORD length, int leftvol, int rightvol);
void w_mixing8(char data[], DWORD length, int leftvol, int rightvol);
void w_mixing_zero(void);






void w_enter_critial(void);
void w_exit_critial(void);


void vga_vsync(void);