nlua_audio.h

/*
 * See Licensing and Copyright notice in naev.h
 */
#pragma once

#include "SDL_thread.h"
#include "al.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 {
   char          *name;      
   int            ok;        
   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 );