Camera2: Make sure aborting captures on an idle device works.

Check if device is already idle, and if so, don't actually flush,
just fire the busy/idle callbacks to the session.

Bug: 17306157
Change-Id: I7ba416c6014c7bc1edcad07910aa0aff232af8b0

diff --git a/core/java/android/hardware/camera2/impl/CameraDeviceImpl.java b/core/java/android/hardware/camera2/impl/CameraDeviceImpl.java
index 513d222..d75dfe6 100644 (file)
--- a/core/java/android/hardware/camera2/impl/CameraDeviceImpl.java
+++ b/core/java/android/hardware/camera2/impl/CameraDeviceImpl.java
@@ -721,6 +721,13 @@ public class CameraDeviceImpl extends CameraDevice {
             checkIfCameraClosedOrInError();
 
             mDeviceHandler.post(mCallOnBusy);
+
+            // If already idle, just do a busy->idle transition immediately, don't actually
+            // flush.
+            if (mIdle) {
+                mDeviceHandler.post(mCallOnIdle);
+                return;
+            }
             try {
                 LongParcelable lastFrameNumberRef = new LongParcelable();
                 mRemoteDevice.flush(/*out*/lastFrameNumberRef);