commit fc42642ab78da5fe25bcbea7a568bf880268a9dc
author Igor Murashkin <iam@google.com> Wed Feb 13 18:23:39 2013 -0800
committer Igor Murashkin <iam@google.com> Fri Feb 22 10:50:14 2013 -0800
tree 846d5c8f98b34fdd0ea87a53abe4c7311578e0fc
parent 7efa520c76e6a1f6b3146404cc6aca5a8353583a

Camera: Add exists function to CameraMetadata

Change-Id: I081f61417fca7c8408e9e767129647ddce5364ab

camera/CameraMetadata.cpp

diff --git a/camera/CameraMetadata.cpp b/camera/CameraMetadata.cpp
index 0bfa420..fdd0610 100644
--- a/camera/CameraMetadata.cpp
+++ b/camera/CameraMetadata.cpp
@@ -208,6 +208,11 @@
     return res;
 }
 
+bool CameraMetadata::exists(uint32_t tag) const {
+    camera_metadata_ro_entry entry;
+    return find_camera_metadata_ro_entry(mBuffer, tag, &entry) == 0;
+}
+
 camera_metadata_entry_t CameraMetadata::find(uint32_t tag) {
     status_t res;
     camera_metadata_entry entry;

include/camera/CameraMetadata.h

diff --git a/include/camera/CameraMetadata.h b/include/camera/CameraMetadata.h
index cf599e1..4289126 100644
--- a/include/camera/CameraMetadata.h
+++ b/include/camera/CameraMetadata.h
@@ -121,6 +121,12 @@
     }
 
     /**
+     * Check if a metadata entry exists for a given tag id
+     *
+     */
+    bool exists(uint32_t tag) const;
+
+    /**
      * Get metadata entry by tag id
      */
     camera_metadata_entry find(uint32_t tag);