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| 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 "content/renderer/compositor_bindings/web_external_bitmap_impl.h" | |
| 6 | |
| 7 #include "base/memory/shared_memory.h" | |
| 8 | |
| 9 namespace content { | |
| 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 content | |
| 47 | |
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