Implemented OpenSL-ES audio recording on Android

android-project/app/src/main/java/org/libsdl/app/SDLActivity.java

@@ -783,6 +783,7 @@ public class SDLActivity extends Activity implements View.OnSystemUiVisibilityCh
     public static native void nativeSetenv(String name, String value);
     public static native void onNativeOrientationChanged(int orientation);
     public static native void nativeAddTouch(int touchId, String name);
+    public static native void nativePermissionResult(int requestCode, boolean result);
 
     /**
      * This method is called by SDL using JNI.
@@ -1600,6 +1601,42 @@ public class SDLActivity extends Activity implements View.OnSystemUiVisibilityCh
         }
         return true;
     }
+
+    /**
+     * This method is called by SDL using JNI.
+     */
+    public static void requestPermission(String permission, int requestCode) {
+        if (mSingleton != null) {
+            mSingleton.checkPermission(permission, requestCode);
+        } else {
+            nativePermissionResult(requestCode, false);
+        }
+    }
+
+    /**
+     * This can be overridden
+     */
+    public void checkPermission(String permission, int requestCode) {
+        if (Build.VERSION.SDK_INT < 23) {
+            nativePermissionResult(requestCode, true);
+            return;
+        }
+
+        if (this.checkSelfPermission(permission) != PackageManager.PERMISSION_GRANTED) {
+            this.requestPermissions(new String[]{permission}, requestCode);
+        } else {
+            nativePermissionResult(requestCode, true);
+        }
+    }
+
+    @Override
+    public void onRequestPermissionsResult(int requestCode, String[] permissions, int[] grantResults) {
+        if (grantResults.length > 0 && grantResults[0] == PackageManager.PERMISSION_GRANTED) {
+            nativePermissionResult(requestCode, true);
+        } else {
+            nativePermissionResult(requestCode, false);
+        }
+    }
 }
 
 /**

src/audio/SDL_audio.c

@@ -1076,7 +1076,7 @@ SDL_GetAudioDeviceName(int index, int iscapture)
         return NULL;
     }
 
-    if ((iscapture) && (!current_audio.impl.HasCaptureSupport)) {
+    if (iscapture && !current_audio.impl.HasCaptureSupport) {
         SDL_SetError("No capture support");
         return NULL;
     }
@@ -1230,7 +1230,7 @@ open_audio_device(const char *devname, int iscapture,
         return 0;
     }
 
-    if ((iscapture) && (!current_audio.impl.HasCaptureSupport)) {
+    if (iscapture && !current_audio.impl.HasCaptureSupport) {
         SDL_SetError("No capture support");
         return 0;
     }

src/audio/openslES/SDL_openslES.h

@@ -32,14 +32,10 @@
 
 struct SDL_PrivateAudioData
 {
-    /* The file descriptor for the audio device */
     Uint8   *mixbuff;
     int      next_buffer;
     Uint8   *pmixbuff[NUM_BUFFERS];
     SDL_sem *playsem;
-#if 0
-    SDL_sem *recsem;
-#endif
 };
 
 void openslES_ResumeDevices(void);

src/core/android/SDL_android.h

@@ -123,6 +123,8 @@ SDL_bool Android_JNI_SetSystemCursor(int cursorID);
 SDL_bool Android_JNI_SupportsRelativeMouse(void);
 SDL_bool Android_JNI_SetRelativeMouseEnabled(SDL_bool enabled);
 
+/* Request permission */
+SDL_bool Android_JNI_RequestPermission(const char *permission);
 
 int SDL_GetAndroidSDKVersion(void);