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// Copyright 2013 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.
#ifndef REMOTING_CLIENT_JNI_CHROMOTING_JNI_RUNTIME_H_
#define REMOTING_CLIENT_JNI_CHROMOTING_JNI_RUNTIME_H_
#include <jni.h>
#include <string>
#include "base/android/scoped_java_ref.h"
#include "base/at_exit.h"
#include "net/url_request/url_request_context_getter.h"
#include "remoting/base/auto_thread.h"
#include "remoting/client/jni/chromoting_jni_instance.h"
#include "remoting/protocol/connection_to_host.h"
template<typename T> struct DefaultSingletonTraits;
namespace remoting {
bool RegisterJni(JNIEnv* env);
// Houses the global resources on which the Chromoting components run
// (e.g. message loops and task runners). Proxies outgoing JNI calls from its
// ChromotingJniInstance member to Java. All its methods should be invoked
// exclusively from the UI thread unless otherwise noted.
class ChromotingJniRuntime {
public:
// This class is instantiated at process initialization and persists until
// we close. Its components are reused across |ChromotingJniInstance|s.
static ChromotingJniRuntime* GetInstance();
scoped_refptr<AutoThreadTaskRunner> ui_task_runner() {
return ui_task_runner_;
}
scoped_refptr<AutoThreadTaskRunner> network_task_runner() {
return network_task_runner_;
}
scoped_refptr<AutoThreadTaskRunner> display_task_runner() {
return display_task_runner_;
}
scoped_refptr<net::URLRequestContextGetter> url_requester() {
return url_requester_;
}
// Initiates a connection with the specified host. Only call when a host
// connection is active (i.e. between a call to Connect() and the
// corresponding call to Disconnect()). To skip the attempt at pair-based
// authentication, leave |pairing_id| and |pairing_secret| as empty strings.
void ConnectToHost(const char* username,
const char* auth_token,
const char* host_jid,
const char* host_id,
const char* host_pubkey,
const char* pairing_id,
const char* pairing_secret);
// Terminates any ongoing connection attempt and cleans up by nullifying
// |session_|. This is a no-op unless |session| is currently non-null.
void DisconnectFromHost();
// Returns the client for the currently-active session. Do not call if
// |session| is null.
scoped_refptr<ChromotingJniInstance> session() {
DCHECK(session_);
return session_;
}
// Notifies the user of the current connection status. Call on UI thread.
void ReportConnectionStatus(protocol::ConnectionToHost::State state,
protocol::ErrorCode error);
// Pops up a dialog box asking the user to enter a PIN. Call on UI thread.
void DisplayAuthenticationPrompt(bool pairing_supported);
// Saves new pairing credentials to permanent storage. Call on UI thread.
void CommitPairingCredentials(const std::string& host,
const std::string& id,
const std::string& secret);
// Creates a new Bitmap object to store a video frame.
base::android::ScopedJavaLocalRef<jobject> NewBitmap(
webrtc::DesktopSize size);
// Updates video frame bitmap. |bitmap| must be an instance of
// android.graphics.Bitmap. Call on the display thread.
void UpdateFrameBitmap(jobject bitmap);
// Updates cursor shape. Call on display thread.
void UpdateCursorShape(const protocol::CursorShapeInfo& cursor_shape);
// Draws the latest image buffer onto the canvas. Call on the display thread.
void RedrawCanvas();
private:
ChromotingJniRuntime();
// Forces a DisconnectFromHost() in case there is any active or failed
// connection, then proceeds to tear down the Chromium dependencies on which
// all sessions depended. Because destruction only occurs at application exit
// after all connections have terminated, it is safe to make unretained
// cross-thread calls on the class.
virtual ~ChromotingJniRuntime();
// Detaches JVM from the current thread, then signals. Doesn't own |waiter|.
void DetachFromVmAndSignal(base::WaitableEvent* waiter);
// Used by the Chromium libraries to clean up the base and net libraries' JNI
// bindings. It must persist for the lifetime of the singleton.
scoped_ptr<base::AtExitManager> at_exit_manager_;
// Chromium code's connection to the Java message loop.
scoped_ptr<base::MessageLoopForUI> ui_loop_;
// References to native threads.
scoped_refptr<AutoThreadTaskRunner> ui_task_runner_;
scoped_refptr<AutoThreadTaskRunner> network_task_runner_;
scoped_refptr<AutoThreadTaskRunner> display_task_runner_;
scoped_refptr<net::URLRequestContextGetter> url_requester_;
// Contains all connection-specific state.
scoped_refptr<ChromotingJniInstance> session_;
friend struct DefaultSingletonTraits<ChromotingJniRuntime>;
DISALLOW_COPY_AND_ASSIGN(ChromotingJniRuntime);
};
} // namespace remoting
#endif
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