Merge default into minor

--HG--
branch : minor

src/common/android.cpp

@@ -225,6 +225,22 @@ bool createStorageDirectories()
 	return true;
 }
 
+bool hasBackgroundMusic()
+{
+	JNIEnv *env = (JNIEnv*) SDL_AndroidGetJNIEnv();
+	jobject activity = (jobject) SDL_AndroidGetActivity();
+
+	jclass clazz(env->GetObjectClass(activity));
+	jmethodID method_id = env->GetMethodID(clazz, "hasBackgroundMusic", "()Z");
+
+	jboolean result = env->CallBooleanMethod(activity, method_id);
+
+	env->DeleteLocalRef(activity);
+	env->DeleteLocalRef(clazz);
+
+	return result;
+}
+
 } // android
 } // love
 

src/common/android.h

@@ -66,6 +66,8 @@ bool mkdir(const char *path);
 
 bool createStorageDirectories();
 
+bool hasBackgroundMusic();
+
 } // android
 } // love
 

src/common/ios.h

@@ -64,6 +64,16 @@ std::string getExecutablePath();
  **/
 void vibrate();
 
+/**
+ * Enable mix mode (e.g. with background music apps) and playback with a muted device.
+ **/
+void setAudioMixWithOthers(bool mixEnabled);
+
+/**
+ * Returns whether another application is playing audio.
+ **/
+bool hasBackgroundMusic();
+
 } // ios
 } // love
 

src/common/ios.mm

@@ -26,6 +26,7 @@
 #import <UIKit/UIKit.h>
 
 #import <AudioToolbox/AudioServices.h>
+#import <AVFoundation/AVFoundation.h>
 
 #include <vector>
 
@@ -344,6 +345,28 @@ void vibrate()
 	}
 }
 
+void setAudioMixWithOthers(bool mixEnabled)
+{
+	@autoreleasepool
+	{
+		NSString *category = AVAudioSessionCategorySoloAmbient;
+		NSError *err;
+
+		if (mixEnabled)
+			category = AVAudioSessionCategoryAmbient;
+
+		if (![[AVAudioSession sharedInstance] setCategory:category error:&err])
+			NSLog(@"Error in AVAudioSession setCategory: %@", [err localizedDescription]);
+	}
+}
+
+bool hasBackgroundMusic()
+{
+	if ([[AVAudioSession sharedInstance] respondsToSelector:@selector(secondaryAudioShouldBeSilencedHint)])
+		return [[AVAudioSession sharedInstance] secondaryAudioShouldBeSilencedHint];
+	return false;
+}
+
 } // ios
 } // love
 

src/modules/audio/wrap_Audio.cpp

@@ -25,6 +25,9 @@
 #include "null/Audio.h"
 
 #include "common/runtime.h"
+#ifdef LOVE_IOS
+#include "common/ios.h"
+#endif
 
 // C++
 #include <iostream>
@@ -519,6 +522,17 @@ int w_isEffectsSupported(lua_State *L)
 	return 1;
 }
 
+#ifdef LOVE_IOS
+int w_setMixMode(lua_State *L)
+{
+	love::ios::setAudioMixWithOthers(lua_toboolean(L, 1));
+#else
+int w_setMixMode(lua_State *)
+{
+#endif
+	return 0;
+}
+
 // List of functions to wrap.
 static const luaL_Reg functions[] =
 {
@@ -549,6 +563,7 @@ static const luaL_Reg functions[] =
 	{ "getMaxSceneEffects", w_getMaxSceneEffects },
 	{ "getMaxSourceEffects", w_getMaxSourceEffects },
 	{ "isEffectsSupported", w_isEffectsSupported },
+	{ "setMixMode", w_setMixMode },
 	{ 0, 0 }
 };
 

src/modules/system/System.cpp

@@ -158,6 +158,17 @@ void System::vibrate(double seconds) const
 #endif
 }
 
+bool System::hasBackgroundMusic() const
+{
+#if defined(LOVE_ANDROID)
+	return love::android::hasBackgroundMusic();
+#elif defined(LOVE_IOS)
+	return love::ios::hasBackgroundMusic();
+#else
+	return false;
+#endif
+}
+
 bool System::getConstant(const char *in, System::PowerState &out)
 {
 	return powerStates.find(in, out);

src/modules/system/System.h

@@ -106,6 +106,14 @@ public:
 	 */
 	virtual void vibrate(double seconds) const;
 
+	/**
+	 * Gets if the user is playing music on background.
+	 * Throws an exception on unsupported platforms.
+	 *
+	 * @return Whether a music is playing on background.
+	 **/
+	bool hasBackgroundMusic() const;
+
 	static bool getConstant(const char *in, PowerState &out);
 	static bool getConstant(PowerState in, const char *&out);
 

src/modules/system/wrap_System.cpp

@@ -95,6 +95,12 @@ int w_vibrate(lua_State *L)
 	return 0;
 }
 
+int w_hasBackgroundMusic(lua_State *L)
+{
+	lua_pushboolean(L, instance()->hasBackgroundMusic());
+	return 1;
+}
+
 static const luaL_Reg functions[] =
 {
 	{ "getOS", w_getOS },
@@ -104,6 +110,7 @@ static const luaL_Reg functions[] =
 	{ "getPowerInfo", w_getPowerInfo },
 	{ "openURL", w_openURL },
 	{ "vibrate", w_vibrate },
+	{ "hasBackgroundMusic", w_hasBackgroundMusic },
 	{ 0, 0 }
 };
 

src/scripts/boot.lua

@@ -373,6 +373,9 @@ function love.init()
 			window = true,
 			video = true,
 		},
+		audio = {
+			mixwithsystem = true, -- Only relevant for Android / iOS.
+		},
 		console = false, -- Only relevant for windows.
 		identity = false,
 		appendidentity = false,
@@ -492,6 +495,10 @@ function love.init()
 		end
 	end
 
+	if love.audio then
+		love.audio.setMixMode(c.audio.mixwithsystem)
+	end
+
 	-- Our first timestep, because window creation can take some time
 	if love.timer then
 		love.timer.step()

src/scripts/boot.lua.h

@@ -684,6 +684,12 @@ const unsigned char boot_lua[] =
 	0x09, 0x09, 0x09, 0x77, 0x69, 0x6e, 0x64, 0x6f, 0x77, 0x20, 0x3d, 0x20, 0x74, 0x72, 0x75, 0x65, 0x2c, 0x0a,
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 	0x09, 0x09, 0x7d, 0x2c, 0x0a,
+	0x09, 0x09, 0x61, 0x75, 0x64, 0x69, 0x6f, 0x20, 0x3d, 0x20, 0x7b, 0x0a,
+	0x09, 0x09, 0x09, 0x6d, 0x69, 0x78, 0x77, 0x69, 0x74, 0x68, 0x73, 0x79, 0x73, 0x74, 0x65, 0x6d, 0x20, 0x3d, 
+	0x20, 0x74, 0x72, 0x75, 0x65, 0x2c, 0x20, 0x2d, 0x2d, 0x20, 0x4f, 0x6e, 0x6c, 0x79, 0x20, 0x72, 0x65, 0x6c, 
+	0x65, 0x76, 0x61, 0x6e, 0x74, 0x20, 0x66, 0x6f, 0x72, 0x20, 0x41, 0x6e, 0x64, 0x72, 0x6f, 0x69, 0x64, 0x20, 
+	0x2f, 0x20, 0x69, 0x4f, 0x53, 0x2e, 0x0a,
+	0x09, 0x09, 0x7d, 0x2c, 0x0a,
 	0x09, 0x09, 0x63, 0x6f, 0x6e, 0x73, 0x6f, 0x6c, 0x65, 0x20, 0x3d, 0x20, 0x66, 0x61, 0x6c, 0x73, 0x65, 0x2c, 
 	0x20, 0x2d, 0x2d, 0x20, 0x4f, 0x6e, 0x6c, 0x79, 0x20, 0x72, 0x65, 0x6c, 0x65, 0x76, 0x61, 0x6e, 0x74, 0x20, 
 	0x66, 0x6f, 0x72, 0x20, 0x77, 0x69, 0x6e, 0x64, 0x6f, 0x77, 0x73, 0x2e, 0x0a,
@@ -912,6 +918,12 @@ const unsigned char boot_lua[] =
 	0x77, 0x2e, 0x69, 0x63, 0x6f, 0x6e, 0x29, 0x29, 0x0a,
 	0x09, 0x09, 0x65, 0x6e, 0x64, 0x0a,
 	0x09, 0x65, 0x6e, 0x64, 0x0a,
+	0x09, 0x69, 0x66, 0x20, 0x6c, 0x6f, 0x76, 0x65, 0x2e, 0x61, 0x75, 0x64, 0x69, 0x6f, 0x20, 0x74, 0x68, 0x65, 
+	0x6e, 0x0a,
+	0x09, 0x09, 0x6c, 0x6f, 0x76, 0x65, 0x2e, 0x61, 0x75, 0x64, 0x69, 0x6f, 0x2e, 0x73, 0x65, 0x74, 0x4d, 0x69, 
+	0x78, 0x4d, 0x6f, 0x64, 0x65, 0x28, 0x63, 0x2e, 0x61, 0x75, 0x64, 0x69, 0x6f, 0x2e, 0x6d, 0x69, 0x78, 0x77, 
+	0x69, 0x74, 0x68, 0x73, 0x79, 0x73, 0x74, 0x65, 0x6d, 0x29, 0x0a,
+	0x09, 0x65, 0x6e, 0x64, 0x0a,
 	0x09, 0x2d, 0x2d, 0x20, 0x4f, 0x75, 0x72, 0x20, 0x66, 0x69, 0x72, 0x73, 0x74, 0x20, 0x74, 0x69, 0x6d, 0x65, 
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