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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_PPB_BUFFER_PROXY_H_
#define PPAPI_PROXY_PPB_BUFFER_PROXY_H_
#include <stdint.h>
#include "base/memory/shared_memory_mapping.h"
#include "base/memory/unsafe_shared_memory_region.h"
#include "ppapi/c/pp_instance.h"
#include "ppapi/proxy/interface_proxy.h"
#include "ppapi/shared_impl/resource.h"
#include "ppapi/thunk/ppb_buffer_api.h"
namespace ppapi {
class HostResource;
namespace proxy {
class SerializedHandle;
class Buffer : public thunk::PPB_Buffer_API, public Resource {
public:
Buffer(const HostResource& resource,
base::UnsafeSharedMemoryRegion shm_handle);
Buffer(const Buffer&) = delete;
Buffer& operator=(const Buffer&) = delete;
~Buffer() override;
// Resource overrides.
thunk::PPB_Buffer_API* AsPPB_Buffer_API() override;
// PPB_Buffer_API implementation.
PP_Bool Describe(uint32_t* size_in_bytes) override;
PP_Bool IsMapped() override;
void* Map() override;
void Unmap() override;
// Trusted
int32_t GetSharedMemory(base::UnsafeSharedMemoryRegion** shm) override;
private:
base::UnsafeSharedMemoryRegion shm_;
base::WritableSharedMemoryMapping mapping_;
int map_count_;
};
class PPB_Buffer_Proxy : public InterfaceProxy {
public:
explicit PPB_Buffer_Proxy(Dispatcher* dispatcher);
~PPB_Buffer_Proxy() override;
static PP_Resource CreateProxyResource(PP_Instance instance,
uint32_t size);
static PP_Resource AddProxyResource(
const HostResource& resource,
base::UnsafeSharedMemoryRegion shm_region);
// InterfaceProxy implementation.
bool OnMessageReceived(const IPC::Message& msg) override;
static const ApiID kApiID = API_ID_PPB_BUFFER;
private:
// Message handlers.
void OnMsgCreate(PP_Instance instance,
uint32_t size,
HostResource* result_resource,
ppapi::proxy::SerializedHandle* result_shm_handle);
};
} // namespace proxy
} // namespace ppapi
#endif // PPAPI_PROXY_PPB_BUFFER_PROXY_H_
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