android: camera_metadata: Add defaul constructor

Add a default constructor that initializes a non valid CameraMetadata
to allow embedding instances of the class in other types.

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

2 files changed, 6 insertions, 0 deletions

diff --git a/src/android/camera_metadata.cpp b/src/android/camera_metadata.cpp
index 8e36e758..6f1bcdbe 100644
--- a/src/android/camera_metadata.cpp
+++ b/src/android/camera_metadata.cpp
@@ -13,6 +13,11 @@ using namespace libcamera;
 
 LOG_DEFINE_CATEGORY(CameraMetadata)
 
+CameraMetadata::CameraMetadata()
+	: metadata_(nullptr), valid_(false)
+{
+}
+
 CameraMetadata::CameraMetadata(size_t entryCapacity, size_t dataCapacity)
 {
 	metadata_ = allocate_camera_metadata(entryCapacity, dataCapacity);
diff --git a/src/android/camera_metadata.h b/src/android/camera_metadata.h
index 720b760d..d653e2f0 100644
--- a/src/android/camera_metadata.h
+++ b/src/android/camera_metadata.h
@@ -14,6 +14,7 @@
 class CameraMetadata
 {
 public:
+	CameraMetadata();
 	CameraMetadata(size_t entryCapacity, size_t dataCapacity);
 	CameraMetadata(const camera_metadata_t *metadata);
 	CameraMetadata(const CameraMetadata &other);