android: camera_metadata: Add functions for instrumenting resizing

Add utility functions to CameraMetadata to check if it has been resized,
and for outputting the actual entry and data count. This is meant to be
used to output information on resizing, to assist developers in
choosing proper initial sizes to avoid resizing. Also make CameraDevice
use these functions for static and result metadata.

Signed-off-by: Paul Elder <paul.elder@ideasonboard.com>
Reviewed-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
Reviewed-by: Hirokazu Honda <hiroh@chromium.org>

1 files changed, 4 insertions, 0 deletions

diff --git a/src/android/camera_metadata.h b/src/android/camera_metadata.h
index f8f2a0d2..3b7c9e24 100644
--- a/src/android/camera_metadata.h
+++ b/src/android/camera_metadata.h
@@ -23,6 +23,9 @@ public:
 
 	CameraMetadata &operator=(const CameraMetadata &other);
 
+	std::tuple<size_t, size_t> usage() const;
+	bool resized() const { return resized_; }
+
 	bool isValid() const { return valid_; }
 	bool getEntry(uint32_t tag, camera_metadata_ro_entry_t *entry) const;
 
@@ -89,6 +92,7 @@ private:
 
 	camera_metadata_t *metadata_;
 	bool valid_;
+	bool resized_;
 };
 
 #endif /* __ANDROID_CAMERA_METADATA_H__ */