Merge \\"When display is frozen prefer preserving orientation.\\" into nyc-mr1-dev am: b6a77f47

    SparseArray<DisplayContent> mDisplayContents = new SparseArray<>(2);

    int mRotation = 0;

    int mForcedAppOrientation = ActivityInfo.SCREEN_ORIENTATION_UNSPECIFIED;

    int mLastOrientation = ActivityInfo.SCREEN_ORIENTATION_UNSPECIFIED;

    boolean mAltOrientation = false;

    private boolean mKeyguardWaitingForActivityDrawn;

                // can re-appear and inflict its own orientation on us.  Keep the

                // orientation stable until this all settles down.

                return mLastWindowForcedOrientation;

            } else if (mPolicy.isKeyguardLocked()

                    && mLastKeyguardForcedOrientation != SCREEN_ORIENTATION_UNSPECIFIED) {

                // Use the last orientation the keyguard forced while the display is frozen with the

                // keyguard locked.

            } else if (mPolicy.isKeyguardLocked()) {

                // Use the last orientation the while the display is frozen with the

                // keyguard locked. This could be the keyguard forced orientation or

                // from a SHOW_WHEN_LOCKED window. We don't want to check the show when

                // locked window directly though as things aren't stable while

                // the display is frozen, for example the window could be momentarily unavailable

                // due to activity relaunch.

                if (DEBUG_ORIENTATION) Slog.v(TAG_WM, "Display is frozen while keyguard locked, "

                        + "return " + mLastKeyguardForcedOrientation);

                return mLastKeyguardForcedOrientation;

                        + "return " + mLastOrientation);

                return mLastOrientation;

            }

        } else {

            // TODO(multidisplay): Change to the correct display.

            }

        }

        if (DEBUG_ORIENTATION) Slog.v(TAG_WM,

                "No app is requesting an orientation, return " + mForcedAppOrientation);

                "No app is requesting an orientation, return " + mLastOrientation);

        // The next app has not been requested to be visible, so we keep the current orientation

        // to prevent freezing/unfreezing the display too early unless we are in multi-window, in

        // which we don't let the app customize the orientation unless it was the home task that

        // is handled above.

        return inMultiWindow ? SCREEN_ORIENTATION_UNSPECIFIED : mForcedAppOrientation;

        return inMultiWindow ? SCREEN_ORIENTATION_UNSPECIFIED : mLastOrientation;

    }

    @Override

        long ident = Binder.clearCallingIdentity();

        try {

            int req = getOrientationLocked();

            if (req != mForcedAppOrientation) {

                mForcedAppOrientation = req;

            if (req != mLastOrientation) {

                mLastOrientation = req;

                //send a message to Policy indicating orientation change to take

                //action like disabling/enabling sensors etc.,

                mPolicy.setCurrentOrientationLw(req);

        //       an orientation that has different metrics than it expected.

        //       eg. Portrait instead of Landscape.

        int rotation = mPolicy.rotationForOrientationLw(mForcedAppOrientation, mRotation);

        int rotation = mPolicy.rotationForOrientationLw(mLastOrientation, mRotation);

        boolean altOrientation = !mPolicy.rotationHasCompatibleMetricsLw(

                mForcedAppOrientation, rotation);

                mLastOrientation, rotation);

        if (DEBUG_ORIENTATION) {

            Slog.v(TAG_WM, "Application requested orientation "

                    + mForcedAppOrientation + ", got rotation " + rotation

            Slog.v(TAG_WM, "Selected orientation "

                    + mLastOrientation + ", got rotation " + rotation

                    + " which has " + (altOrientation ? "incompatible" : "compatible")

                    + " metrics");

        }

            Slog.v(TAG_WM,

                "Rotation changed to " + rotation + (altOrientation ? " (alt)" : "")

                + " from " + mRotation + (mAltOrientation ? " (alt)" : "")

                + ", forceApp=" + mForcedAppOrientation);

                + ", lastOrientation=" + mLastOrientation);

        }

        int oldRotation = mRotation;

            pw.print("  mRotation="); pw.print(mRotation);

                    pw.print(" mAltOrientation="); pw.println(mAltOrientation);

            pw.print("  mLastWindowForcedOrientation="); pw.print(mLastWindowForcedOrientation);

                    pw.print(" mForcedAppOrientation="); pw.println(mForcedAppOrientation);

                    pw.print(" mLastOrientation="); pw.println(mLastOrientation);

            pw.print("  mDeferredRotationPauseCount="); pw.println(mDeferredRotationPauseCount);

            pw.print("  Animation settings: disabled="); pw.print(mAnimationsDisabled);

                    pw.print(" window="); pw.print(mWindowAnimationScaleSetting);