camera: Drop pending preview for enableZsl shots
If the device support ZSL, drop pending preview buffers to reduce
the chance the rendering preview frames newer than the still frame
during takePicture().
Test: CTS
Bug: 67497723
Change-Id: I5f253a402a6302d31777ad4ca2878ef0d0d1ae44
(cherry picked from commit c75eb9b126b2c6b7fc8f47d8ae4e4ac15f6a176e)
diff --git a/services/camera/libcameraservice/device3/Camera3Device.h b/services/camera/libcameraservice/device3/Camera3Device.h
index 357b893..e9466ab 100644
--- a/services/camera/libcameraservice/device3/Camera3Device.h
+++ b/services/camera/libcameraservice/device3/Camera3Device.h
@@ -192,6 +192,12 @@
const std::vector<size_t> &removedSurfaceIds,
KeyedVector<sp<Surface>, size_t> *outputMap/*out*/);
+ /**
+ * Drop buffers for stream of streamId if dropping is true. If dropping is false, do not
+ * drop buffers for stream of streamId.
+ */
+ status_t dropStreamBuffers(bool dropping, int streamId) override;
+
private:
// internal typedefs