Bug 1316934 - [3.1] Add JNI for AudioManager properties. r=snorp

mobile/android/geckoview/src/main/java/org/mozilla/gecko/GeckoAppShell.java

@@ -30,6 +30,7 @@ import org.mozilla.gecko.annotation.WrapForJNI;
 import org.mozilla.gecko.gfx.BitmapUtils;
 import org.mozilla.gecko.permissions.Permissions;
 import org.mozilla.gecko.process.GeckoProcessManager;
+import org.mozilla.gecko.SysInfo;
 import org.mozilla.gecko.util.HardwareCodecCapabilityUtils;
 import org.mozilla.gecko.util.HardwareUtils;
 import org.mozilla.gecko.util.IOUtils;
@@ -69,6 +70,7 @@ import android.location.Criteria;
 import android.location.Location;
 import android.location.LocationListener;
 import android.location.LocationManager;
+import android.media.AudioManager;
 import android.net.ConnectivityManager;
 import android.net.NetworkInfo;
 import android.net.Uri;
@@ -1812,4 +1814,38 @@ public class GeckoAppShell
     private static int startGeckoServiceChildProcess(String type, String[] args, int crashFd, int ipcFd) {
         return GeckoProcessManager.getInstance().start(type, args, crashFd, ipcFd);
     }
+
+    @WrapForJNI(calledFrom = "gecko")
+    public static int getAudioOutputFramesPerBuffer() {
+        if (SysInfo.getVersion() < 17) {
+            return 0;
+        }
+        final AudioManager am = (AudioManager)getApplicationContext()
+                                .getSystemService(Context.AUDIO_SERVICE);
+        if (am == null) {
+            return 0;
+        }
+        final String prop = am.getProperty(AudioManager.PROPERTY_OUTPUT_FRAMES_PER_BUFFER);
+        if (prop == null) {
+            return 0;
+        }
+        return Integer.parseInt(prop);
+    }
+
+    @WrapForJNI(calledFrom = "gecko")
+    public static int getAudioOutputSampleRate() {
+        if (SysInfo.getVersion() < 17) {
+            return 0;
+        }
+        final AudioManager am = (AudioManager)getApplicationContext()
+                                .getSystemService(Context.AUDIO_SERVICE);
+        if (am == null) {
+            return 0;
+        }
+        final String prop = am.getProperty(AudioManager.PROPERTY_OUTPUT_SAMPLE_RATE);
+        if (prop == null) {
+            return 0;
+        }
+        return Integer.parseInt(prop);
+    }
 }

widget/android/GeneratedJNIWrappers.cpp

@@ -235,6 +235,22 @@ auto GeckoAppShell::GetApplicationContext() -> mozilla::jni::Object::LocalRef
     return mozilla::jni::Method<GetApplicationContext_t>::Call(GeckoAppShell::Context(), nullptr);
 }
 
+constexpr char GeckoAppShell::GetAudioOutputFramesPerBuffer_t::name[];
+constexpr char GeckoAppShell::GetAudioOutputFramesPerBuffer_t::signature[];
+
+auto GeckoAppShell::GetAudioOutputFramesPerBuffer() -> int32_t
+{
+    return mozilla::jni::Method<GetAudioOutputFramesPerBuffer_t>::Call(GeckoAppShell::Context(), nullptr);
+}
+
+constexpr char GeckoAppShell::GetAudioOutputSampleRate_t::name[];
+constexpr char GeckoAppShell::GetAudioOutputSampleRate_t::signature[];
+
+auto GeckoAppShell::GetAudioOutputSampleRate() -> int32_t
+{
+    return mozilla::jni::Method<GetAudioOutputSampleRate_t>::Call(GeckoAppShell::Context(), nullptr);
+}
+
 constexpr char GeckoAppShell::GetConnection_t::name[];
 constexpr char GeckoAppShell::GetConnection_t::signature[];
 

widget/android/GeneratedJNIWrappers.h

@@ -688,6 +688,44 @@ public:
 
     static auto GetApplicationContext() -> mozilla::jni::Object::LocalRef;
 
+    struct GetAudioOutputFramesPerBuffer_t {
+        typedef GeckoAppShell Owner;
+        typedef int32_t ReturnType;
+        typedef int32_t SetterType;
+        typedef mozilla::jni::Args<> Args;
+        static constexpr char name[] = "getAudioOutputFramesPerBuffer";
+        static constexpr char signature[] =
+                "()I";
+        static const bool isStatic = true;
+        static const mozilla::jni::ExceptionMode exceptionMode =
+                mozilla::jni::ExceptionMode::ABORT;
+        static const mozilla::jni::CallingThread callingThread =
+                mozilla::jni::CallingThread::GECKO;
+        static const mozilla::jni::DispatchTarget dispatchTarget =
+                mozilla::jni::DispatchTarget::CURRENT;
+    };
+
+    static auto GetAudioOutputFramesPerBuffer() -> int32_t;
+
+    struct GetAudioOutputSampleRate_t {
+        typedef GeckoAppShell Owner;
+        typedef int32_t ReturnType;
+        typedef int32_t SetterType;
+        typedef mozilla::jni::Args<> Args;
+        static constexpr char name[] = "getAudioOutputSampleRate";
+        static constexpr char signature[] =
+                "()I";
+        static const bool isStatic = true;
+        static const mozilla::jni::ExceptionMode exceptionMode =
+                mozilla::jni::ExceptionMode::ABORT;
+        static const mozilla::jni::CallingThread callingThread =
+                mozilla::jni::CallingThread::GECKO;
+        static const mozilla::jni::DispatchTarget dispatchTarget =
+                mozilla::jni::DispatchTarget::CURRENT;
+    };
+
+    static auto GetAudioOutputSampleRate() -> int32_t;
+
     struct GetConnection_t {
         typedef GeckoAppShell Owner;
         typedef mozilla::jni::Object::LocalRef ReturnType;