Merge Chromium + Blink git repositories
[chromium-blink-merge.git] / content / renderer / pepper / host_array_buffer_var.h
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1 // Copyright (c) 2012 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.
5 #ifndef CONTENT_RENDERER_PEPPER_HOST_ARRAY_BUFFER_VAR_H_
6 #define CONTENT_RENDERER_PEPPER_HOST_ARRAY_BUFFER_VAR_H_
8 #include "base/memory/shared_memory.h"
9 #include "ppapi/c/pp_instance.h"
10 #include "ppapi/shared_impl/host_resource.h"
11 #include "ppapi/shared_impl/var.h"
12 #include "third_party/WebKit/public/web/WebArrayBuffer.h"
14 namespace content {
16 // Represents a host-side ArrayBufferVar.
17 class HostArrayBufferVar : public ppapi::ArrayBufferVar {
18 public:
19 explicit HostArrayBufferVar(uint32 size_in_bytes);
20 explicit HostArrayBufferVar(const blink::WebArrayBuffer& buffer);
21 explicit HostArrayBufferVar(uint32 size_in_bytes,
22 base::SharedMemoryHandle handle);
24 // ArrayBufferVar implementation.
25 void* Map() override;
26 void Unmap() override;
27 uint32 ByteLength() override;
28 bool CopyToNewShmem(PP_Instance instance,
29 int* host_shm_handle_id,
30 base::SharedMemoryHandle* plugin_shm_handle) override;
32 blink::WebArrayBuffer& webkit_buffer() { return buffer_; }
34 private:
35 ~HostArrayBufferVar() override;
37 blink::WebArrayBuffer buffer_;
38 // Tracks whether the data in the buffer is valid.
39 bool valid_;
41 DISALLOW_COPY_AND_ASSIGN(HostArrayBufferVar);
44 } // namespace content
46 #endif // CONTENT_RENDERER_PEPPER_HOST_ARRAY_BUFFER_VAR_H_