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// Copyright (c) 2011 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "ppapi/proxy/ppb_buffer_proxy.h"
#include <vector>
#include "base/logging.h"
#include "build/build_config.h"
#include "ppapi/c/pp_completion_callback.h"
#include "ppapi/c/pp_resource.h"
#include "ppapi/c/dev/ppb_buffer_dev.h"
#include "ppapi/proxy/plugin_dispatcher.h"
#include "ppapi/proxy/plugin_resource.h"
#include "ppapi/proxy/ppapi_messages.h"
#include "ppapi/thunk/ppb_buffer_api.h"
#include "ppapi/thunk/thunk.h"
namespace pp {
namespace proxy {
namespace {
InterfaceProxy* CreateBufferProxy(Dispatcher* dispatcher,
const void* target_interface) {
return new PPB_Buffer_Proxy(dispatcher, target_interface);
}
} // namespace
class Buffer : public ppapi::thunk::PPB_Buffer_API,
public PluginResource {
public:
Buffer(const HostResource& resource,
int memory_handle,
uint32_t size);
virtual ~Buffer();
// Resource overrides.
virtual Buffer* AsBuffer() OVERRIDE;
// ResourceObjectBase overries.
virtual ppapi::thunk::PPB_Buffer_API* AsBuffer_API() OVERRIDE;
// PPB_Buffer_API implementation.
virtual PP_Bool Describe(uint32_t* size_in_bytes) OVERRIDE;
virtual PP_Bool IsMapped() OVERRIDE;
virtual void* Map() OVERRIDE;
virtual void Unmap() OVERRIDE;
private:
int memory_handle_;
uint32_t size_;
void* mapped_data_;
DISALLOW_COPY_AND_ASSIGN(Buffer);
};
Buffer::Buffer(const HostResource& resource,
int memory_handle,
uint32_t size)
: PluginResource(resource),
memory_handle_(memory_handle),
size_(size),
mapped_data_(NULL) {
}
Buffer::~Buffer() {
Unmap();
}
Buffer* Buffer::AsBuffer() {
return this;
}
ppapi::thunk::PPB_Buffer_API* Buffer::AsBuffer_API() {
return this;
}
PP_Bool Buffer::Describe(uint32_t* size_in_bytes) {
*size_in_bytes = size_;
return PP_TRUE;
}
PP_Bool Buffer::IsMapped() {
return PP_FromBool(!!mapped_data_);
}
void* Buffer::Map() {
// TODO(brettw) implement this.
return mapped_data_;
}
void Buffer::Unmap() {
// TODO(brettw) implement this.
}
PPB_Buffer_Proxy::PPB_Buffer_Proxy(Dispatcher* dispatcher,
const void* target_interface)
: InterfaceProxy(dispatcher, target_interface) {
}
PPB_Buffer_Proxy::~PPB_Buffer_Proxy() {
}
// static
const InterfaceProxy::Info* PPB_Buffer_Proxy::GetInfo() {
static const Info info = {
ppapi::thunk::GetPPB_Buffer_Thunk(),
PPB_BUFFER_DEV_INTERFACE,
INTERFACE_ID_PPB_BUFFER,
false,
&CreateBufferProxy,
};
return &info;
}
// static
PP_Resource PPB_Buffer_Proxy::CreateProxyResource(PP_Instance instance,
uint32_t size) {
PluginDispatcher* dispatcher = PluginDispatcher::GetForInstance(instance);
if (!dispatcher)
return 0;
HostResource result;
int32_t shm_handle = -1;
dispatcher->Send(new PpapiHostMsg_PPBBuffer_Create(
INTERFACE_ID_PPB_BUFFER, instance, size,
&result, &shm_handle));
if (result.is_null())
return 0;
linked_ptr<Buffer> object(new Buffer(result,
static_cast<int>(shm_handle), size));
return PluginResourceTracker::GetInstance()->AddResource(object);
}
bool PPB_Buffer_Proxy::OnMessageReceived(const IPC::Message& msg) {
bool handled = true;
IPC_BEGIN_MESSAGE_MAP(PPB_Buffer_Proxy, msg)
IPC_MESSAGE_HANDLER(PpapiHostMsg_PPBBuffer_Create, OnMsgCreate)
IPC_MESSAGE_UNHANDLED(handled = false)
IPC_END_MESSAGE_MAP()
// TODO(brettw) handle bad messages!
return handled;
}
void PPB_Buffer_Proxy::OnMsgCreate(PP_Instance instance,
uint32_t size,
HostResource* result_resource,
int* result_shm_handle) {
result_resource->SetHostResource(
instance,
ppb_buffer_target()->Create(instance, size));
// TODO(brettw) set the shm handle from a trusted interface.
*result_shm_handle = 0;
}
} // namespace proxy
} // namespace pp
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