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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 <stdint.h>
#include "cc/resources/shared_bitmap.h"
namespace cc_blink {
namespace {
SharedBitmapAllocationFunction g_memory_allocator;
} // namespace
void SetSharedBitmapAllocationFunction(
SharedBitmapAllocationFunction allocator) {
g_memory_allocator = allocator;
}
WebExternalBitmapImpl::WebExternalBitmapImpl() {
}
WebExternalBitmapImpl::~WebExternalBitmapImpl() {
}
void WebExternalBitmapImpl::setSize(blink::WebSize size) {
if (size != size_) {
shared_bitmap_ = g_memory_allocator(gfx::Size(size));
size_ = size;
}
}
blink::WebSize WebExternalBitmapImpl::size() {
return size_;
}
uint8_t* WebExternalBitmapImpl::pixels() {
if (!shared_bitmap_) {
// crbug.com/520417: not sure why a non-null WebExternalBitmap is
// being passed to prepareMailbox when the shared_bitmap_ is null.
// Best hypothesis is that the bitmap is zero-sized.
DCHECK(size_.isEmpty());
return nullptr;
}
return shared_bitmap_->pixels();
}
} // namespace cc_blink
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