改进RDAudio::pause()，优化Android下暂停的性能损耗。同时修正Java编译错误。

cocos/audio/RDAudio.cpp

@@ -67,18 +67,16 @@ void RDAudio::destroyInstance()
 
 void RDAudio::pause()
 {
-//#if CC_TARGET_PLATFORM != CC_PLATFORM_ANDROID
-    alcMakeContextCurrent(NULL);
-    alcSuspendContext(_context);
-//#endif
+    if (_device) {
+        alcDevicePauseSOFT(_device);
+    }
 }
 
 void RDAudio::resume()
 {
-//#if CC_TARGET_PLATFORM != CC_PLATFORM_ANDROID
-    alcMakeContextCurrent(_context);
-    alcProcessContext(_context);
-//#endif
+    if (_device) {
+        alcDeviceResumeSOFT(_device);
+    }
 }
 
 void RDAudio::waitForQuit()

cocos/audio/RDAudio.h

@@ -24,6 +24,7 @@
 #include "platform/CCPlatformConfig.h"
 #include "base/CCRef.h"
 
+#define AL_ALEXT_PROTOTYPES
 #include "alext.h"
 
 typedef void (*AudioCallback)(int funcID, ALuint bufferID);

cocos/platform/android/java/src/org/cocos2dx/lib/Cocos2dxActivity.java

@@ -53,6 +53,8 @@ import org.cocos2dx.lib.Cocos2dxHelper.Cocos2dxHelperListener;
 import org.cocos2dx.utils.PSNetwork;
 import org.cocos2dx.utils.PSDevice;
 
+import java.util.ArrayList;
+
 import javax.microedition.khronos.egl.EGL10;
 import javax.microedition.khronos.egl.EGLConfig;
 import javax.microedition.khronos.egl.EGLDisplay;

cocos/scripting/lua-bindings/manual/audio/lua_audio_manual.cpp

@@ -78,6 +78,18 @@ static int lnewSource(lua_State * L)
     return 1;// number of return values
 }
 
+static int lpause(lua_State * L)
+{
+    RDAudio::getInstance()->pause();
+    return 0;
+}
+
+static int lresume(lua_State * L)
+{
+    RDAudio::getInstance()->resume();
+    return 0;
+}
+
 /******************** for buffer metatable ********************/
 static int lBufferGC(lua_State *L)
 {
@@ -228,6 +240,8 @@ static const struct luaL_Reg meta_source [] = {
 static const struct luaL_Reg audio_funcs [] = {
     {"newBuffer", lnewBuffer},
     {"newSource", lnewSource},
+    {"pause", lpause},
+    {"resume", lresume},
     {NULL, NULL}
 };
 

templates/src/framework/AppBase.lua

@@ -4,12 +4,12 @@ local AppBase = class("AppBase")
 function AppBase:ctor()
     local eventDispatcher = cc.Director:getInstance():getEventDispatcher()
     local customListenerBg = cc.EventListenerCustom:create("APP_ENTER_BACKGROUND_EVENT", function()
-		audio.pauseAll()
+		Rapid2D_CAudio.pause() -- stop OpenAL backend thread
 		self:onEnterBackground()
 	end)
     eventDispatcher:addEventListenerWithFixedPriority(customListenerBg, 1)
     local customListenerFg = cc.EventListenerCustom:create("APP_ENTER_FOREGROUND_EVENT", function()
-		audio.resumeAll()
+		Rapid2D_CAudio.resume() -- start OpenAL backend thread
 		self:onEnterForeground()
 	end)
     eventDispatcher:addEventListenerWithFixedPriority(customListenerFg, 1)