1 files changed, 39 insertions, 21 deletions

diff --git a/src/libjin/Audio/SDL/SDLAudio.cpp b/src/libjin/Audio/SDL/SDLAudio.cpp
index a41382b..f7ca70d 100644
--- a/src/libjin/Audio/SDL/SDLAudio.cpp
+++ b/src/libjin/Audio/SDL/SDLAudio.cpp
@@ -18,15 +18,20 @@ namespace audio
     static void defaultCallback(void *userdata, Uint8 *stream, int size)
     {
         static SDLAudio* audio = static_cast<SDLAudio*>(userdata);
+        if (!audio->goOnProcess())
+            return;
         audio->lock();
         audio->processCommands();
         audio->processSources(stream, size);
+        audio->processBuffer(stream, size);
         audio->unlock();
     }
 
     onlyonce bool SDLAudio::initSystem(const SettingBase* s)
     {
+#if JIN_DEBUG
         Loghelper::log(Loglevel::LV_INFO, "Init Audio System");
+#endif
 
         if (SDL_Init(SDL_INIT_AUDIO) < 0)
             return false;
@@ -68,6 +73,20 @@ namespace audio
         SDL_UnlockAudioDevice(audioDevice);
     }
 
+    bool SDLAudio::goOnProcess()
+    {
+        if (state == SDLAudio::State::STOP)
+        {
+            SDLSourceManager::get()->removeAllSource();
+            pause();
+            return false;
+        }
+        else if (state == SDLAudio::State::PAUSE)
+            return false;
+        else
+            return true;
+    }
+
     void SDLAudio::processCommands()
     {
         SDLSourceManager::get()->processCommands();
@@ -78,45 +97,44 @@ namespace audio
         SDLSourceManager::get()->processSources(buffer, len);
     }
 
-    void SDLAudio::play() {}
-    
-    void SDLAudio::stop() {}
-    
-    bool SDLAudio::pause()
+    void SDLAudio::processBuffer(void* buff, size_t len)
     {
-        return false;
+        short* buffer = (short*)buff;
+        int samples = (len / SDLAUDIO_BYTEDEPTH) >> 1; // ˫����
+        const char L = 0, R = 1;
+        for (int i = 0; i < samples; ++i)
+        {
+            short* clip = buffer + (i << 1);
+            clip[L] *= volume;
+            clip[R] *= volume;
+        }
     }
 
-    bool SDLAudio::pause(Source* source)
+    void SDLAudio::play() 
     {
-        return false; 
+        state = State::PLAY;
     }
     
-    bool SDLAudio::resume()
+    void SDLAudio::stop() 
     {
-        return false;
+        state = State::STOP;
     }
     
-    bool SDLAudio::resume(Source* source)
+    void SDLAudio::pause()
     {
-        return false;
+        state = State::PAUSE;
     }
-    
-    void SDLAudio::rewind() 
+
+    void SDLAudio::resume()
     {
-    
+        state = State::PLAY;
     }
     
     void SDLAudio::setVolume(float volume) 
     {
-    
+        this->volume = clamp(volume, 0.0f, 1.0f);
     }
     
-    float SDLAudio::getVolume() 
-    {
-        return 0.f;
-    }
-
 }
 }