nlua_audio.h

/*
 * See Licensing and Copyright notice in naev.h
 */
#pragma once
 
#include "al.h"
#include "SDL.h"
#include "SDL_rwops.h"
#include "SDL_thread.h"
#include <vorbis/vorbisfile.h>
#include "nlua.h"
 
#define AUDIO_METATABLE      "audio" 
typedef enum LuaAudioType_e {
   LUA_AUDIO_NULL=0,
   LUA_AUDIO_STATIC,
   LUA_AUDIO_STREAM,
} LuaAudioType_t;
 
typedef struct LuaBuffer_s {
   ALuint buffer;    
   int refcount;     
} LuaBuffer_t;
 
typedef struct LuaAudio_s {
#if DEBUGGING
   char *name;       
#endif /* DEBUGGING */
   LuaAudioType_t type; 
   int nocleanup;    
   ALuint source;    
   ALuint slot;      
   double volume;    
   /* When not streaming. */
   LuaBuffer_t *buf; 
   /* When streaming. */
   SDL_mutex *lock;  
   OggVorbis_File stream; 
   vorbis_info *info; 
   ALenum format;    
   ALfloat rg_scale_factor; 
   ALfloat rg_max_scale; 
   ALuint stream_buffers[2]; 
   int active;       
   SDL_Thread *th;   
   SDL_cond *cond;   
} LuaAudio_t;
 
/*
 * Library loading
 */
int nlua_loadAudio( nlua_env env );
 
/* Basic operations. */
LuaAudio_t* lua_toaudio( lua_State *L, int ind );
LuaAudio_t* luaL_checkaudio( lua_State *L, int ind );
LuaAudio_t* lua_pushaudio( lua_State *L, LuaAudio_t audio );
int lua_isaudio( lua_State *L, int ind );
 
/* Useful stuff. */
void audio_clone( LuaAudio_t *la, const LuaAudio_t *source );
void audio_cleanup( LuaAudio_t *la );