Upstream version 10.39.225.0
[platform/framework/web/crosswalk.git] / src / cc / blink / web_external_bitmap_impl.cc
1 // Copyright 2014 The Chromium Authors. All rights reserved.
2 // Use of this source code is governed by a BSD-style license that can be
3 // found in the LICENSE file.
4
5 #include "cc/blink/web_external_bitmap_impl.h"
6
7 #include "base/memory/shared_memory.h"
8
9 namespace cc_blink {
10
11 namespace {
12
13 SharedMemoryAllocationFunction g_memory_allocator;
14
15 }  // namespace
16
17 void SetSharedMemoryAllocationFunction(
18     SharedMemoryAllocationFunction allocator) {
19   g_memory_allocator = allocator;
20 }
21
22 WebExternalBitmapImpl::WebExternalBitmapImpl() {
23 }
24
25 WebExternalBitmapImpl::~WebExternalBitmapImpl() {
26 }
27
28 void WebExternalBitmapImpl::setSize(blink::WebSize size) {
29   if (size != size_) {
30     size_t byte_size = size.width * size.height * 4;
31     shared_memory_ = g_memory_allocator(byte_size);
32     if (shared_memory_)
33       shared_memory_->Map(byte_size);
34     size_ = size;
35   }
36 }
37
38 blink::WebSize WebExternalBitmapImpl::size() {
39   return size_;
40 }
41
42 uint8* WebExternalBitmapImpl::pixels() {
43   return static_cast<uint8*>(shared_memory_->memory());
44 }
45
46 }  // namespace cc_blink