android: camera_metadata: Add copy constructor and getEntry

Add a copy constructor and assignment operator to CameraMetadata, as well
a constructor from camera_metadata_t. Also add a function getEntry to
allow getting metadata entries from CameraMetadata. This allows us to
use CameraMetadata for reading from camera_metadata_t.

Reviewed-by: Paul Elder <paul.elder@ideasonboard.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Jacopo Mondi <jacopo@jmondi.org>
Signed-off-by: Paul Elder <paul.elder@ideasonboard.com>
Signed-off-by: Jacopo Mondi <jacopo@jmondi.org>

1 files changed, 5 insertions, 0 deletions

diff --git a/src/android/camera_metadata.h b/src/android/camera_metadata.h
index 9d047b1b..720b760d 100644
--- a/src/android/camera_metadata.h
+++ b/src/android/camera_metadata.h
@@ -15,9 +15,14 @@ class CameraMetadata
 {
 public:
 	CameraMetadata(size_t entryCapacity, size_t dataCapacity);
+	CameraMetadata(const camera_metadata_t *metadata);
+	CameraMetadata(const CameraMetadata &other);
 	~CameraMetadata();
 
+	CameraMetadata &operator=(const CameraMetadata &other);
+
 	bool isValid() const { return valid_; }
+	bool getEntry(uint32_t tag, camera_metadata_ro_entry_t *entry) const;
 	bool addEntry(uint32_t tag, const void *data, size_t data_count);
 	bool updateEntry(uint32_t tag, const void *data, size_t data_count);