From 5e67f87430d581155c700bb33ac0b43ed5de20b7 Mon Sep 17 00:00:00 2001
From: Jamie Gennis <jgennis@google.com>
Date: Mon, 10 May 2010 17:33:32 -0700
Subject: Add incStrong and decStrong methods to
 android_native_{window,buffer}_t.

This change adds the methods necessary to use sp<> to handle refcounting
android_native_window_t and android_native_buffer_t.  The new methods forward
the refcounting operations to the corresponding android_native_base_t
functions.

Change-Id: I7de8e262728e439bc1efdf69374a2a9f6f432ced
---
 include/ui/android_native_buffer.h |  9 +++++++++
 include/ui/egl/android_natives.h   | 18 ++++++++++++++++++
 2 files changed, 27 insertions(+)

diff --git a/include/ui/android_native_buffer.h b/include/ui/android_native_buffer.h
index 9c92af8..402843e 100644
--- a/include/ui/android_native_buffer.h
+++ b/include/ui/android_native_buffer.h
@@ -33,6 +33,15 @@ typedef struct android_native_buffer_t
         common.version = sizeof(android_native_buffer_t);
         memset(common.reserved, 0, sizeof(common.reserved));
     }
+
+    // Implement the methods that sp<android_native_buffer_t> expects so that it
+    // can be used to automatically refcount android_native_buffer_t's.
+    void incStrong(const void* id) const {
+        common.incRef(const_cast<android_native_base_t*>(&common));
+    }
+    void decStrong(const void* id) const {
+        common.decRef(const_cast<android_native_base_t*>(&common));
+    }
 #endif
 
     struct android_native_base_t common;
diff --git a/include/ui/egl/android_natives.h b/include/ui/egl/android_natives.h
index 471c3c7..49bfa2b 100644
--- a/include/ui/egl/android_natives.h
+++ b/include/ui/egl/android_natives.h
@@ -98,6 +98,15 @@ typedef struct android_native_window_t
         common.version = sizeof(android_native_window_t);
         memset(common.reserved, 0, sizeof(common.reserved));
     }
+
+    // Implement the methods that sp<android_native_window_t> expects so that it
+    // can be used to automatically refcount android_native_window_t's.
+    void incStrong(const void* id) const {
+        common.incRef(const_cast<android_native_base_t*>(&common));
+    }
+    void decStrong(const void* id) const {
+        common.decRef(const_cast<android_native_base_t*>(&common));
+    }
 #endif
     
     struct android_native_base_t common;
@@ -291,6 +300,15 @@ namespace android {
 template <typename NATIVE_TYPE, typename TYPE, typename REF>
 class EGLNativeBase : public NATIVE_TYPE, public REF
 {
+public:
+    // Disambiguate between the incStrong in REF and NATIVE_TYPE
+    void incStrong(const void* id) const {
+        REF::incStrong(id);
+    }
+    void decStrong(const void* id) const {
+        REF::decStrong(id);
+    }
+
 protected:
     typedef EGLNativeBase<NATIVE_TYPE, TYPE, REF> BASE;
     EGLNativeBase() : NATIVE_TYPE(), REF() {
-- 
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