3 files changed, 77 insertions, 5 deletions

diff --git a/src/libjin/audio/audio.cpp b/src/libjin/audio/audio.cpp
index f4b64e6..7142625 100644
--- a/src/libjin/audio/audio.cpp
+++ b/src/libjin/audio/audio.cpp
@@ -1,13 +1,58 @@
+#include <SDL2/SDL.h>
+
 #include "audio.h"
 
 namespace jin
 {
 namespace audio
 {
+    
+    shared Audio* Audio::audio = NULL;
+
+    bool Audio::init(const SettingBase* setting)
+    {
+        static bool result = _init(setting);
+        return result;
+    }
+
+    void Audio::quit()
+    {
+        CallOnce(_quit());
+    }
+
+    onlyonce bool Audio::_init(const SettingBase* s)
+    {
+        if (SDL_Init(SDL_INIT_AUDIO) < 0)
+            return false;
+        
+        const AudioSetting* setting = (AudioSetting*)s;
+        SDL_AudioSpec wanted;
+        zero(wanted);
+        wanted.freq     = setting->freq;
+        wanted.format   = setting->format;
+        wanted.channels = setting->channels;
+        wanted.samples  = setting->samples;
+        wanted.userdata = setting->userdata;
+        wanted.callback = setting->callback;
+
+        if (SDL_OpenAudio(&wanted, NULL) < 0)
+        {
+            return false; 
+        }
+        // start audio 
+        SDL_PauseAudio(0);
+        return true;
+    }
+
+    onlyonce void Audio::_quit()
+    {
+        SDL_CloseAudio();
+        delete audio;
+    }
 
-    onlyonce bool Audio::_init(const SettingBase* setting)
+    shared void defaultCallback(void *udata, Uint8 *stream, int len)
     {
-        return false;
+        
     }
 
 }
diff --git a/src/libjin/audio/audio.h b/src/libjin/audio/audio.h
index fd4ab69..80e463f 100644
--- a/src/libjin/audio/audio.h
+++ b/src/libjin/audio/audio.h
@@ -1,5 +1,8 @@
 #ifndef __JIN_AUDIO_H
 #define __JIN_AUDIO_H
+
+#include <SDL2/SDL.h>
+
 #include "../utils/macros.h"
 #include "../common/subsystem.h"
 
@@ -11,15 +14,36 @@ namespace audio
     class Audio : public common::Subsystem
     {
     public:
+        
         struct Setting : SettingBase
         {
-
+            int freq;
+            int format;
+            char channels; 
+            int samples; 
+            SDL_AudioCallback callback;
+            void* userdata; 
         };
+        
+        bool init(const SettingBase* setting) override;
+        void quit() override;
 
-    private: 
+        static inline Audio* get()
+        {
+            return (audio == NULL ? (audio = new Audio()) : audio);
+        }
 
-        onlyonce bool _init(const SettingBase* setting) override;
+        static void defaultCallback(void *udata, Uint8 *stream, int len);
 
+    private:
+
+        Audio() {}; 
+        ~Audio() {};
+
+        static Audio* audio;
+
+        onlyonce bool _init(const SettingBase* setting) override;
+        onlyonce void _quit() override; 
     };
 
     typedef Audio::Setting AudioSetting;
diff --git a/src/libjin/audio/source.h b/src/libjin/audio/source.h
index a8e40fe..96da208 100644
--- a/src/libjin/audio/source.h
+++ b/src/libjin/audio/source.h
@@ -22,6 +22,9 @@ namespace audio
         void setPitch(float pitch); 
         void setVolume(float volume); 
 
+    private: 
+        unsigned char * curPos;
+        unsigned int length;
     };
 
 }