-#define DEFAULT_SOUND_PACKET_VOLUME 255
-#define DEFAULT_SOUND_PACKET_ATTENUATION 1.0
-
-typedef struct
-{
- size_t length;
- size_t offset;
- qbyte data[4]; // variable sized
-} sfxbuffer_t;
-
-typedef struct
-{
- unsigned int speed;
- unsigned int width;
- unsigned int channels;
-} snd_format_t;
-
-// sfx_t flags
-#define SFXFLAG_NONE 0
-#define SFXFLAG_SILENTLYMISSING (1 << 0) // if the sfx is missing and loaded with complain = false
-#define SFXFLAG_USED (1 << 1)
-#define SFXFLAG_STREAMED (1 << 2) // informative only. You shouldn't need to know that
-
-typedef struct snd_fetcher_s snd_fetcher_t;
-typedef struct sfx_s
-{
- char name[MAX_QPATH];
- mempool_t *mempool;
- unsigned int flags; // cf SFXFLAG_* defines
- snd_format_t format;
- int loopstart;
- size_t total_length;
- const snd_fetcher_t *fetcher;
- void *fetcher_data; // Per-sfx data for the sound fetching functions
-} sfx_t;
-
-typedef struct
-{
- snd_format_t format;
- int samples; // mono samples in buffer
- int samplepos; // in mono samples
- unsigned char *buffer;
- int bufferlength; // used only by certain drivers
-} dma_t;
-
-// channel_t flags
-#define CHANNELFLAG_NONE 0
-#define CHANNELFLAG_FORCELOOP (1 << 0) // force looping even if the sound is not looped
-#define CHANNELFLAG_LOCALSOUND (1 << 1) // non-game sound (ex: menu sound)
-#define CHANNELFLAG_PAUSED (1 << 2)
-
-typedef struct
-{
- sfx_t *sfx; // sfx number
- unsigned int flags; // cf CHANNELFLAG_* defines
- int leftvol; // 0-255 volume
- int rightvol; // 0-255 volume
- int end; // end time in global paintsamples
- int lastptime; // last time this channel was painted
- int pos; // sample position in sfx
- int looping; // where to loop, -1 = no looping
- int entnum; // to allow overriding a specific sound
- int entchannel;
- vec3_t origin; // origin of sound effect
- vec_t dist_mult; // distance multiplier (attenuation/clipK)
- int master_vol; // 0-255 master volume
- void *fetcher_data; // Per-channel data for the sound fetching function
-} channel_t;
-
-typedef const sfxbuffer_t* (*snd_fetcher_getsb_t) (channel_t* ch, unsigned int start, unsigned int nbsamples);
-typedef void (*snd_fetcher_end_t) (channel_t* ch);
-struct snd_fetcher_s
-{
- snd_fetcher_getsb_t getsb;
- snd_fetcher_end_t end;
-};
-
-void S_Init (void);
-void S_Startup (void);
-void S_Shutdown (void);
-// S_StartSound returns the channel index, or -1 if an error occurred
-int S_StartSound (int entnum, int entchannel, sfx_t *sfx, vec3_t origin, float fvol, float attenuation);
-void S_StaticSound (sfx_t *sfx, vec3_t origin, float vol, float attenuation);
-void S_StopChannel (unsigned int channel_ind);
-void S_PauseChannel (unsigned int channel_ind, qboolean toggle);
-void S_LoopChannel (unsigned int channel_ind, qboolean toggle);
-void S_StopSound (int entnum, int entchannel);
-void S_StopAllSounds(qboolean clear);
-void S_PauseGameSounds (void);
-void S_ResumeGameSounds (void);
-void S_ClearBuffer (void);
-void S_Update(vec3_t origin, vec3_t forward, vec3_t left, vec3_t up);
-void S_ExtraUpdate (void);
-
-sfx_t *S_GetCached(const char *name);
-sfx_t *S_PrecacheSound (char *sample, int complain);
-void S_TouchSound (char *sample);
-void S_ClearUsed (void);
-void S_PurgeUnused (void);
-void S_PaintChannels(int endtime);
-void S_InitPaintChannels (void);
-
-// initializes cycling through a DMA buffer and returns information on it
-qboolean SNDDMA_Init(void);
-
-// gets the current DMA position
-int SNDDMA_GetDMAPos(void);
-
-// shutdown the DMA xfer.
-void SNDDMA_Shutdown(void);