Add toString() to HardwareBuffer

Bug: N/A
Test: m
(cherry picked from https://googleplex-android-review.googlesource.com/q/commit:2ed5cf9a07889c97d9fc28471934f1115c72736f)
Merged-In: I7452fd53876eacb0a062d5a5c601594de2190ee1
Change-Id: I7452fd53876eacb0a062d5a5c601594de2190ee1

1 files changed, 13 insertions, 0 deletions

diff --git a/libs/nativewindow/include/android/hardware_buffer_aidl.h b/libs/nativewindow/include/android/hardware_buffer_aidl.h
index 9fea21e34e..551a1a14dd 100644
--- a/libs/nativewindow/include/android/hardware_buffer_aidl.h
+++ b/libs/nativewindow/include/android/hardware_buffer_aidl.h
@@ -34,6 +34,10 @@
 #include <android/hardware_buffer.h>
 #include <sys/cdefs.h>
 
+#ifdef __cplusplus
+#include <string>
+#endif
+
 __BEGIN_DECLS
 
 /**
@@ -135,6 +139,15 @@ public:
         return ret;
     }
 
+    inline std::string toString() const {
+        if (!mBuffer) {
+            return "<HardwareBuffer: Invalid>";
+        }
+        uint64_t id = 0;
+        AHardwareBuffer_getId(mBuffer, &id);
+        return "<HardwareBuffer " + std::to_string(id) + ">";
+    }
+
 private:
     HardwareBuffer(const HardwareBuffer& other) = delete;
     HardwareBuffer& operator=(const HardwareBuffer& other) = delete;