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// Copyright 2014 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "cc/blink/web_external_bitmap_impl.h"
#include "base/memory/shared_memory.h"
namespace cc_blink {
namespace {
SharedMemoryAllocationFunction g_memory_allocator;
} // namespace
void SetSharedMemoryAllocationFunction(
SharedMemoryAllocationFunction allocator) {
g_memory_allocator = allocator;
}
WebExternalBitmapImpl::WebExternalBitmapImpl() {
}
WebExternalBitmapImpl::~WebExternalBitmapImpl() {
}
void WebExternalBitmapImpl::setSize(blink::WebSize size) {
if (size != size_) {
size_t byte_size = size.width * size.height * 4;
shared_memory_ = g_memory_allocator(byte_size);
if (shared_memory_)
shared_memory_->Map(byte_size);
size_ = size;
}
}
blink::WebSize WebExternalBitmapImpl::size() {
return size_;
}
uint8* WebExternalBitmapImpl::pixels() {
return static_cast<uint8*>(shared_memory_->memory());
}
} // namespace cc_blink
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