Adding 2 functions to the Skia API

I need wrappers for both SkOrderedReadBuffer and SkOrderedWriteBuffer inside Chromium in order to do the IPC serialization of Skia SkImageFilter objects.

See https://codereview.chromium.org/21271002/

BUG=
R=djsollen@google.com, scroggo@google.com, reed@google.com

Author: sugoi@chromium.org

Review URL: https://chromiumcodereview.appspot.com/22591002

git-svn-id: http://skia.googlecode.com/svn/trunk/src@10642 2bbb7eff-a529-9590-31e7-b0007b416f81

1 files changed, 28 insertions, 0 deletions

diff --git a/core/SkFlattenableSerialization.cpp b/core/SkFlattenableSerialization.cpp
new file mode 100644
index 00000000..b74c82f0
--- /dev/null
+++ b/core/SkFlattenableSerialization.cpp
@@ -0,0 +1,28 @@
+/*
+ * Copyright 2013 Google Inc.
+ *
+ * Use of this source code is governed by a BSD-style license that can be
+ * found in the LICENSE file.
+ */
+
+#include "SkFlattenableSerialization.h"
+
+#include "SkData.h"
+#include "SkFlattenable.h"
+#include "SkOrderedReadBuffer.h"
+#include "SkOrderedWriteBuffer.h"
+
+SkData* SkSerializeFlattenable(SkFlattenable* flattenable) {
+    SkOrderedWriteBuffer writer(1024);
+    writer.setFlags(SkOrderedWriteBuffer::kCrossProcess_Flag);
+    writer.writeFlattenable(flattenable);
+    uint32_t size = writer.bytesWritten();
+    void* data = sk_malloc_throw(size);
+    writer.writeToMemory(data);
+    return SkData::NewFromMalloc(data, size);
+}
+
+SkFlattenable* SkDeserializeFlattenable(const void* data, size_t size) {
+    SkOrderedReadBuffer buffer(data, size);
+    return buffer.readFlattenable();
+}