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. 4 5 #ifndef PPAPI_CONTENT_RENDERER_PEPPER_HOST_ARRAY_BUFFER_VAR_H_ 6 #define PPAPI_CONTENT_RENDERER_PEPPER_HOST_ARRAY_BUFFER_VAR_H_ 7 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/platform/WebArrayBuffer.h" 13 14 namespace content { 15 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); 23 24 // ArrayBufferVar implementation. 25 virtual void* Map() OVERRIDE; 26 virtual void Unmap() OVERRIDE; 27 virtual uint32 ByteLength() OVERRIDE; 28 virtual bool CopyToNewShmem(PP_Instance instance, 29 int* host_shm_handle_id, 30 base::SharedMemoryHandle* plugin_shm_handle) 31 OVERRIDE; 32 33 blink::WebArrayBuffer& webkit_buffer() { return buffer_; } 34 35 private: 36 virtual ~HostArrayBufferVar(); 37 38 blink::WebArrayBuffer buffer_; 39 // Tracks whether the data in the buffer is valid. 40 bool valid_; 41 42 DISALLOW_COPY_AND_ASSIGN(HostArrayBufferVar); 43 }; 44 45 } // namespace content 46 47 #endif // PPAPI_CONTENT_RENDERER_PEPPER_HOST_ARRAY_BUFFER_VAR_H_ 48
