Add video stabilization management to the application.

- Still image mode: Disable vstab if it is supported
- Camcorder mode: Enable vstab if it is supported
- Camcorder with effects: Disable vstab when using
  background replacement, enable otherwise

Bug: 5440224
Change-Id: Ibb9744b601d9bb122618e5eeaec00f50ee54cbee

3 files changed, 34 insertions, 2 deletions

diff --git a/src/com/android/camera/Camera.java b/src/com/android/camera/Camera.java
index cd8a0b3..3aa0b82 100644
--- a/src/com/android/camera/Camera.java
+++ b/src/com/android/camera/Camera.java
@@ -1765,6 +1765,13 @@ public class Camera extends ActivityBase implements FocusManager.Listener,
         }
 
         mParameters.setRecordingHint(false);
+
+        // Disable video stabilization. Convenience methods not available in API
+        // level <= 14
+        String vstabSupported = mParameters.get("video-stabilization-supported");
+        if ("true".equals(vstabSupported)) {
+            mParameters.set("video-stabilization", "false");
+        }
     }
 
     private void updateCameraParametersZoom() {
diff --git a/src/com/android/camera/EffectsRecorder.java b/src/com/android/camera/EffectsRecorder.java
index 94a3740..2483173 100644
--- a/src/com/android/camera/EffectsRecorder.java
+++ b/src/com/android/camera/EffectsRecorder.java
@@ -384,11 +384,13 @@ public class EffectsRecorder {
 
         switch (mCurrentEffect) {
             case EFFECT_GOOFY_FACE:
+                tryEnableVideoStabilization(true);
                 Filter goofyFilter = mRunner.getGraph().getFilter("goofyrenderer");
                 goofyFilter.setInputValue("currentEffect",
                                           ((Integer)mEffectParameter).intValue());
                 break;
             case EFFECT_BACKDROPPER:
+                tryEnableVideoStabilization(false);
                 Filter backgroundSrc = mRunner.getGraph().getFilter("background");
                 backgroundSrc.setInputValue("sourceUrl",
                                             (String)mEffectParameter);
@@ -459,6 +461,9 @@ public class EffectsRecorder {
 
                 if (mState == STATE_RELEASED) return;
 
+                // Lock AE/AWB to reduce transition flicker
+                tryEnable3ALocks(true);
+
                 mCameraDevice.stopPreview();
                 if (mLogVerbose) Log.v(TAG, "Runner active, connecting effects preview");
                 try {
@@ -467,8 +472,6 @@ public class EffectsRecorder {
                     throw new RuntimeException("Unable to connect camera to effect input", e);
                 }
 
-                // Lock AE/AWB to reduce transition flicker
-                tryEnable3ALocks(true);
                 mCameraDevice.startPreview();
 
                 // Unlock AE/AWB after preview started
@@ -576,6 +579,21 @@ public class EffectsRecorder {
         // Rest of stop and release handled in mRunnerDoneCallback
     }
 
+    // Try to enable/disable video stabilization if supported; otherwise return false
+    boolean tryEnableVideoStabilization(boolean toggle) {
+        Camera.Parameters params = mCameraDevice.getParameters();
+
+        String vstabSupported = params.get("video-stabilization-supported");
+        if ("true".equals(vstabSupported)) {
+            if (mLogVerbose) Log.v(TAG, "Setting video stabilization to " + toggle);
+            params.set("video-stabilization", toggle ? "true" : "false");
+            mCameraDevice.setParameters(params);
+            return true;
+        }
+        if (mLogVerbose) Log.v(TAG, "Video stabilization not supported");
+        return false;
+    }
+
     // Try to enable/disable 3A locks if supported; otherwise return false
     boolean tryEnable3ALocks(boolean toggle) {
         Camera.Parameters params = mCameraDevice.getParameters();
diff --git a/src/com/android/camera/VideoCamera.java b/src/com/android/camera/VideoCamera.java
index 77e163e..3bc5bfa 100755
--- a/src/com/android/camera/VideoCamera.java
+++ b/src/com/android/camera/VideoCamera.java
@@ -1857,6 +1857,13 @@ public class VideoCamera extends ActivityBase
 
         mParameters.setRecordingHint(true);
 
+        // Enable video stabilization. Convenience methods not available in API
+        // level <= 14
+        String vstabSupported = mParameters.get("video-stabilization-supported");
+        if ("true".equals(vstabSupported)) {
+            mParameters.set("video-stabilization", "true");
+        }
+
         // Set picture size.
         String pictureSize = mPreferences.getString(
                 CameraSettings.KEY_PICTURE_SIZE, null);