/*====================================================================
 * sndp.h
 *
 * Synopsis:
 *
 * Copyright 1995, Silicon Graphics, Inc.
 * All Rights Reserved.
 *
 * This is UNPUBLISHED PROPRIETARY SOURCE CODE of Silicon Graphics,
 * Inc.; the contents of this file may not be disclosed to third
 * parties, copied or duplicated in any form, in whole or in part,
 * without the prior written permission of Silicon Graphics, Inc.
 *
 * RESTRICTED RIGHTS LEGEND:
 * Use, duplication or disclosure by the Government is subject to
 * restrictions as set forth in subdivision (c)(1)(ii) of the Rights
 * in Technical Data and Computer Software clause at DFARS
 * 252.227-7013, and/or in similar or successor clauses in the FAR,
 * DOD or NASA FAR Supplement. Unpublished - rights reserved under the
 * Copyright Laws of the United States.
 *====================================================================*/

#ifndef __SNDP__
#define __SNDP__

#include <libaudio.h>

#ifndef MIN
#define MIN(a, b) (((a) < (b)) ? (a) : (b))
#endif

#ifndef MAX
#define MAX(a, b) (((a) > (b)) ? (a) : (b))
#endif

#define MIN_RATIO 0.0001

typedef enum {
    AL_SNDP_PLAY_EVT,
    AL_SNDP_STOP_EVT,
    AL_SNDP_PAN_EVT,
    AL_SNDP_VOL_EVT,
    AL_SNDP_PITCH_EVT,
    AL_SNDP_API_EVT,
    AL_SNDP_DECAY_EVT,
    AL_SNDP_END_EVT,
    AL_SNDP_FX_EVT
} ALSndpMsgType;

typedef struct {
    ALVoice voice;
    ALSound* sound; /* sound referenced here */
    s16 priority;
    f32 pitch; /* current playback pitch                    */
    s32 state; /* play state for this sound                 */
    s16 vol;   /* volume - combined with volume from bank   */
    ALPan pan; /* pan - 0 = left, 127 = right               */
    u8 fxMix;  /* wet/dry mix - 0 = dry, 127 = wet          */
} ALSoundState;

typedef union {

    ALEvent msg;

    struct {
        s16 type;
        ALSoundState* state;
    } common;

    struct {
        s16 type;
        ALSoundState* state;
        s16 vol;
    } vol;

    struct {
        s16 type;
        ALSoundState* state;
        f32 pitch;
    } pitch;

    struct {
        s16 type;
        ALSoundState* state;
        ALPan pan;
    } pan;

    struct {
        s16 type;
        ALSoundState* state;
        u8 mix;
    } fx;

} ALSndpEvent;

static ALMicroTime _sndpVoiceHandler(void* node);
static void _handleEvent(ALSndPlayer* sndp, ALSndpEvent* event);
static void _removeEvents(ALEventQueue* evtq, ALSoundState* state);
static s32 _DivS32ByF32(s32 i, f32 f);

#endif
