auto import from //branches/cupcake_rel/...@140373

1 files changed, 46 insertions, 0 deletions

diff --git a/WebCore/platform/graphics/android/SharedBufferStream.h b/WebCore/platform/graphics/android/SharedBufferStream.h
new file mode 100644
index 0000000..929aa9b
--- /dev/null
+++ b/WebCore/platform/graphics/android/SharedBufferStream.h
@@ -0,0 +1,46 @@
+/*
+ * Copyright (C) 2009 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef WebCore_SharedBufferStream_DEFINED
+#define WebCore_SharedBufferStream_DEFINED
+
+#include "SkStream.h"
+#include "SharedBuffer.h"
+
+namespace WebCore {
+
+    /** Subclass of SkStream that wrapps a webcore SharedBuffer object. To
+        allow this object to be deleted from any thread, the impl will ensure
+        that we unref the SharedBuffer object from the correct webcore thread.
+     */
+    class SharedBufferStream : public SkMemoryStream {
+    public:
+        SharedBufferStream(SharedBuffer* buffer);
+        virtual ~SharedBufferStream();
+
+    private:
+        // don't allow this to change our data. should not get called, but we
+        // override here just to be sure
+        virtual void setMemory(const void* data, size_t length, bool copyData) {
+            sk_throw();
+        }
+
+        // we share ownership of this with webkit
+        SharedBuffer* fBuffer;
+    };                           
+}
+
+#endif