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plugin_array_buffer_var.h
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52 lines (40 loc) · 1.53 KB
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// Copyright 2012 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef PPAPI_PROXY_PLUGIN_ARRAY_BUFFER_VAR_H_
#define PPAPI_PROXY_PLUGIN_ARRAY_BUFFER_VAR_H_
#include <memory>
#include <vector>
#include "base/memory/shared_memory_mapping.h"
#include "base/memory/unsafe_shared_memory_region.h"
#include "ppapi/c/pp_instance.h"
#include "ppapi/c/pp_stdint.h"
#include "ppapi/shared_impl/var.h"
namespace ppapi {
// Represents a plugin-side ArrayBufferVar. In the plugin process, it's
// owned as a vector.
class PluginArrayBufferVar : public ArrayBufferVar {
public:
explicit PluginArrayBufferVar(uint32_t size_in_bytes);
PluginArrayBufferVar(uint32_t size_in_bytes,
base::UnsafeSharedMemoryRegion plugin_handle);
PluginArrayBufferVar(const PluginArrayBufferVar&) = delete;
PluginArrayBufferVar& operator=(const PluginArrayBufferVar&) = delete;
~PluginArrayBufferVar() override;
// ArrayBufferVar implementation.
void* Map() override;
void Unmap() override;
uint32_t ByteLength() override;
bool CopyToNewShmem(PP_Instance instance,
int* host_handle,
3B30
base::UnsafeSharedMemoryRegion* plugin_handle) override;
private:
// Non-shared memory
std::vector<uint8_t> buffer_;
// Shared memory
base::UnsafeSharedMemoryRegion plugin_handle_;
base::WritableSharedMemoryMapping shmem_;
uint32_t size_in_bytes_;
};
} // namespace ppapi
#endif // PPAPI_PROXY_PLUGIN_ARRAY_BUFFER_VAR_H_