Started opensles ms2 sound card for android

build/android/Android.mk

@@ -92,6 +92,7 @@ LOCAL_SRC_FILES = \
 	audiofilters/devices.c \
 	android/androidsound_depr.cpp \
 	android/loader.cpp \
+	android/androidsound_opensles.cpp \
 	android/androidsound.cpp \
 	android/AudioRecord.cpp \
 	android/AudioTrack.cpp \
@@ -289,7 +290,7 @@ ifeq ($(BUILD_MEDIASTREAMER2_SDK), 1)
 		LOCAL_SHARED_LIBRARIES += libzrtpcpp
 	endif
 
-	LOCAL_LDLIBS += -llog -ldl
+	LOCAL_LDLIBS += -lOpenSLES -llog -ldl
 	LOCAL_MODULE_FILENAME := libmediastreamer2-$(TARGET_ARCH_ABI)
 	include $(BUILD_SHARED_LIBRARY)
 else

java/src/org/linphone/mediastream/MediastreamerAndroidContext.java

+/*
+AndroidContext.java
+Copyright (C) 2014  Belledonne Communications, Grenoble, France
+
+This program is free software; you can redistribute it and/or
+modify it under the terms of the GNU General Public License
+as published by the Free Software Foundation; either version 2
+of the License, or (at your option) any later version.
+
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with this program; if not, write to the Free Software
+Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
+*/
+package org.linphone.mediastream;
+
+import android.annotation.TargetApi;
+import android.content.Context;
+import android.media.AudioManager;
+import android.os.Build;
+
+@TargetApi(Build.VERSION_CODES.JELLY_BEAN_MR2)
+public class MediastreamerAndroidContext {
+	private native void setDeviceFavoriteSampleRate(int samplerate);
+	private native void setDeviceFavoriteBufferSize(int bufferSize);
+	
+	private MediastreamerAndroidContext() {
+		
+	
+	}
+	
+	public static void setContext(Object c) {
+		if (c == null)
+			return;
+		
+		Context context = (Context)c;
+		int bufferSize = 64;
+		int sampleRate = 44100;
+		MediastreamerAndroidContext mac = new MediastreamerAndroidContext();
+		// When using the OpenSLES sound card, the system is capable of giving us the best values to use for the buffer size and the sample rate
+		if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.KITKAT)
+		{
+	        AudioManager audiomanager = (AudioManager)context.getSystemService(Context.AUDIO_SERVICE);
+	        bufferSize = Integer.getInteger(audiomanager.getProperty(AudioManager.PROPERTY_OUTPUT_FRAMES_PER_BUFFER), bufferSize);
+	        sampleRate = Integer.getInteger(audiomanager.getProperty(AudioManager.PROPERTY_OUTPUT_SAMPLE_RATE), sampleRate);
+	        Log.i("Setting buffer size to " + bufferSize + " and sample rate to " + sampleRate + " for OpenSLES MS sound card.");
+	        mac.setDeviceFavoriteSampleRate(sampleRate);
+	        mac.setDeviceFavoriteBufferSize(bufferSize);
+		} else {
+			Log.i("Android < 4.4 detected, android context not used.");
+		}
+	}
+}