android: exif: Fix thumbnail buffer lifetime

Previously the thumbnail buffer is destructed before even being used in
Exif. This patch moves the buffer into class Exif, so that the developer
won't need to worry about its lifetime.

Signed-off-by: Harvey Yang <chenghaoyang@chromium.org>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Umang Jain <umang.jain@ideasonboard.com>
Signed-off-by: Umang Jain <umang.jain@ideasonboard.com>

1 files changed, 4 insertions, 1 deletions

diff --git a/src/android/jpeg/exif.h b/src/android/jpeg/exif.h
index 2ff8fb78..e68716f3 100644
--- a/src/android/jpeg/exif.h
+++ b/src/android/jpeg/exif.h
@@ -10,6 +10,7 @@
 #include <chrono>
 #include <string>
 #include <time.h>
+#include <vector>
 
 #include <libexif/exif-data.h>
 
@@ -60,7 +61,7 @@ public:
 
 	void setOrientation(int orientation);
 	void setSize(const libcamera::Size &size);
-	void setThumbnail(libcamera::Span<const unsigned char> thumbnail,
+	void setThumbnail(std::vector<unsigned char> &&thumbnail,
 			  Compression compression);
 	void setTimestamp(time_t timestamp, std::chrono::milliseconds msec);
 
@@ -106,4 +107,6 @@ private:
 
 	unsigned char *exifData_;
 	unsigned int size_;
+
+	std::vector<unsigned char> thumbnailData_;
 };