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// Copyright (c) 2012 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 "content/renderer/pepper/pepper_in_process_router.h"
#include "base/bind.h"
#include "base/message_loop.h"
#include "content/renderer/pepper/renderer_ppapi_host_impl.h"
#include "ipc/ipc_message.h"
#include "ipc/ipc_sender.h"
#include "ppapi/proxy/ppapi_messages.h"
#include "ppapi/shared_impl/ppapi_globals.h"
#include "ppapi/shared_impl/resource_tracker.h"
namespace content {
class PepperInProcessRouter::Channel : public IPC::Sender {
public:
Channel(const base::Callback<bool(IPC::Message*)>& callback)
: callback_(callback) {}
virtual ~Channel() {}
virtual bool Send(IPC::Message* message) OVERRIDE {
return callback_.Run(message);
}
private:
base::Callback<bool(IPC::Message*)> callback_;
};
PepperInProcessRouter::PepperInProcessRouter(
RendererPpapiHostImpl* host_impl)
: host_impl_(host_impl),
pending_message_id_(0),
reply_result_(false),
weak_factory_(this) {
dummy_browser_channel_.reset(
new Channel(base::Bind(&PepperInProcessRouter::DummySendTo,
base::Unretained(this))));
host_to_plugin_router_.reset(
new Channel(base::Bind(&PepperInProcessRouter::SendToPlugin,
base::Unretained(this))));
plugin_to_host_router_.reset(
new Channel(base::Bind(&PepperInProcessRouter::SendToHost,
base::Unretained(this))));
}
PepperInProcessRouter::~PepperInProcessRouter() {
}
IPC::Sender* PepperInProcessRouter::GetPluginToRendererSender() {
return plugin_to_host_router_.get();
}
IPC::Sender* PepperInProcessRouter::GetRendererToPluginSender() {
return host_to_plugin_router_.get();
}
ppapi::proxy::Connection PepperInProcessRouter::GetPluginConnection() {
return ppapi::proxy::Connection(dummy_browser_channel_.get(),
plugin_to_host_router_.get());
}
bool PepperInProcessRouter::SendToHost(IPC::Message* msg) {
scoped_ptr<IPC::Message> message(msg);
if (!message->is_sync()) {
bool result = host_impl_->GetPpapiHost()->OnMessageReceived(*message);
DCHECK(result) << "The message was not handled by the host.";
return true;
}
pending_message_id_ = IPC::SyncMessage::GetMessageId(*message);
reply_deserializer_.reset(
static_cast<IPC::SyncMessage*>(message.get())->GetReplyDeserializer());
reply_result_ = false;
bool result = host_impl_->GetPpapiHost()->OnMessageReceived(*message);
DCHECK(result) << "The message was not handled by the host.";
pending_message_id_ = 0;
reply_deserializer_.reset(NULL);
return reply_result_;
}
bool PepperInProcessRouter::SendToPlugin(IPC::Message* msg) {
scoped_ptr<IPC::Message> message(msg);
CHECK(!msg->is_sync());
if (IPC::SyncMessage::IsMessageReplyTo(*message, pending_message_id_)) {
if (!msg->is_reply_error())
reply_result_ = reply_deserializer_->SerializeOutputParameters(*message);
} else {
CHECK(!pending_message_id_);
// Dispatch plugin messages from the message loop.
MessageLoop::current()->PostTask(
FROM_HERE,
base::Bind(&PepperInProcessRouter::DispatchPluginMsg,
weak_factory_.GetWeakPtr(),
base::Owned(message.release())));
}
return true;
}
void PepperInProcessRouter::DispatchPluginMsg(IPC::Message* msg) {
// Emulate the proxy by dispatching the relevant message here.
bool handled = true;
IPC_BEGIN_MESSAGE_MAP(PepperInProcessRouter, *msg)
IPC_MESSAGE_HANDLER(PpapiPluginMsg_ResourceReply, OnResourceReply)
IPC_MESSAGE_UNHANDLED(handled = false)
IPC_END_MESSAGE_MAP()
DCHECK(handled) << "The message wasn't handled by the plugin.";
}
bool PepperInProcessRouter::DummySendTo(IPC::Message *msg) {
NOTREACHED();
delete msg;
return false;
}
void PepperInProcessRouter::OnResourceReply(
const ppapi::proxy::ResourceMessageReplyParams& reply_params,
const IPC::Message& nested_msg) {
ppapi::Resource* resource =
ppapi::PpapiGlobals::Get()->GetResourceTracker()->GetResource(
reply_params.pp_resource());
if (!resource) {
// The resource could have been destroyed while the async processing was
// pending. Just drop the message.
return;
}
resource->OnReplyReceived(reply_params, nested_msg);
}
} // namespace content
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