/*
===========================================================================
Copyright (C) 1999-2005 Id Software, Inc.

This file is part of Quake III Arena source code.

Quake III Arena source code 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.

Quake III Arena source code 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 Foobar; if not, write to the Free Software
Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
===========================================================================
*/

#ifdef __cplusplus
extern "C" {
#endif

typedef struct soundsystemsavegame_s soundsystemsavegame_t;
typedef struct channelbasesavegame_s channelbasesavegame_t;
typedef struct channel_s channel_t;

void S_Init( void );
void S_SaveData( soundsystemsavegame_t *pSave );
void S_LoadData( soundsystemsavegame_t *pSave );
void S_InitBase( channelbasesavegame_t *pBase );
void S_StoreBase( channelbasesavegame_t *pBase, channel_t *channel );
void S_Shutdown( void );

void S_FadeSound( float fTime );

// if origin is NULL, the sound will be dynamically sourced from the entity
void S_StartSound( const vec3_t origin, int entNum, int entChannel, sfxHandle_t sfxHandle, float volume, float minDist, float pitch, float maxDist, qboolean streamed );
void S_StartLocalSound( const char *sound_name, qboolean force_load );

void S_StartBackgroundTrack( const char *intro, const char *loop );
void S_StopBackgroundTrack( void );

// cinematics and voice-over-network will send raw samples
// 1.0 volume will be direct output of source samples
void S_RawSamples( int stream, int samples, int rate, int width, int channels,
	const byte *data, float volume, int entityNum );

void S_StopSound( int entNum, int channel );

// stop all sounds and the background track
void S_StopAllSounds( qboolean stop_music );

// all continuous looping sounds must be added before calling S_Update
void S_ClearLoopingSounds( void );
void S_AddLoopingSound( const vec3_t origin, const vec3_t velocity, sfxHandle_t sfx, float volume, float minDist, float maxDist, float pitch, int flags );
void S_AddRealLoopingSound( int entityNum, const vec3_t origin, const vec3_t velocity, sfxHandle_t sfx );
void S_StopLoopingSound( int entityNum );

// recompute the reletive volumes for all running sounds
// reletive to the given entityNum / orientation
void S_Respatialize( int entityNum, const vec3_t origin, vec3_t axis[ 3 ] );
void S_RespatializeEx( int entityNum, const vec3_t origin, vec3_t axis[ 3 ], int inwater );

float S_GetSoundTime( sfxHandle_t handle );
void S_SetGlobalAmbientVolumeLevel( float volume );
void S_SetReverb( int reverb_type, float reverb_level );

int S_IsSoundPlaying( int channelNumber, const char *name );

// let the sound system know where an entity currently is
void S_UpdateEntity( int entityNum, const vec3_t origin, const vec3_t velocity, qboolean use_listener );

void S_Update( void );

void S_DisableSounds( void );

void S_BeginRegistration( void );
void S_EndRegistration( void );
qboolean S_IsSoundRegistered( const char *name );

// RegisterSound will allways return a valid sample, even if it
// has to create a placeholder.  This prevents continuous filesystem
// checks for missing files
sfxHandle_t	S_RegisterSound( const char *sample, qboolean compressed, qboolean force_load );

void S_DisplayFreeMemory( void );

void S_ClearSoundBuffer( void );

void SNDDMA_Activate( void );

void S_UpdateBackgroundTrack( void );

// Music soundtrack

void MUSIC_Pause();
void MUSIC_Unpause();
qboolean MUSIC_LoadSoundtrackFile( const char *filename );
qboolean MUSIC_SongValid( const char *mood );
qboolean MUSIC_Loaded( void );
void Music_Update( void );
void MUSIC_SongEnded( void );
void MUSIC_NewSoundtrack( const char *name );
void MUSIC_UpdateMood( int current, int fallback );
void MUSIC_UpdateVolume( float volume, float fade_time );
void MUSIC_StopAllSongs( void );
void MUSIC_FreeAllSongs( void );
qboolean MUSIC_Playing( void );
int MUSIC_FindSong( const char *name );
int MUSIC_CurrentSongChannel( void );
void MUSIC_StopChannel( int channel_number );
qboolean MUSIC_PlaySong( const char *alias );
void MUSIC_UpdateMusicVolumes( void );
void MUSIC_CheckForStoppedSongs( void );

#ifdef __cplusplus
}
#endif