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| 1 // Copyright 2017 The Chromium Authors. All rights reserved. |
| 2 // Use of this source code is governed by a BSD-style license that can be |
| 3 // found in the LICENSE file. |
| 4 |
| 5 #ifndef CHROMEOS_DBUS_MEDIA_ANALYTICS_CLIENT_H_ |
| 6 #define CHROMEOS_DBUS_MEDIA_ANALYTICS_CLIENT_H_ |
| 7 |
| 8 #include "base/callback.h" |
| 9 #include "base/macros.h" |
| 10 #include "chromeos/chromeos_export.h" |
| 11 #include "chromeos/dbus/dbus_client.h" |
| 12 #include "chromeos/media_perception/media_perception.pb.h" |
| 13 |
| 14 namespace chromeos { |
| 15 |
| 16 // MediaAnalyticsClient is used to communicate with a media analytics process |
| 17 // running outside of Chrome. |
| 18 class CHROMEOS_EXPORT MediaAnalyticsClient : public DBusClient { |
| 19 public: |
| 20 // Callback type for a State proto message received from the media analytics |
| 21 // process. |
| 22 using StateCallback = |
| 23 base::Callback<void(bool succeeded, const mri::State& state)>; |
| 24 // Handler type for signal received from media analytics process. |
| 25 using MediaPerceptionSignalHandler = |
| 26 base::Callback<void(const mri::MediaPerception& media_perception)>; |
| 27 // Callback type for a Diagnostics proto message received from the media |
| 28 // analytics process. |
| 29 using DiagnosticsCallback = |
| 30 base::Callback<void(bool succeeded, const mri::Diagnostics& diagnostics)>; |
| 31 |
| 32 ~MediaAnalyticsClient() override; |
| 33 |
| 34 // Gets the media analytics process state. |
| 35 virtual void GetState(const StateCallback& callback) = 0; |
| 36 |
| 37 // Sets the media analytics process state. |state.status| is expected to be |
| 38 // set. |
| 39 virtual void SetState(const mri::State& state, |
| 40 const StateCallback& callback) = 0; |
| 41 |
| 42 // Register event handler for the MediaPerception protos received as signal |
| 43 // from the media analytics process. |
| 44 virtual void SetMediaPerceptionSignalHandler( |
| 45 const MediaPerceptionSignalHandler& handler) = 0; |
| 46 |
| 47 // Resets the signal handler previously set by |
| 48 // SetMediaPerceptionSignalHandler. |
| 49 virtual void ClearMediaPerceptionSignalHandler() = 0; |
| 50 |
| 51 // API for getting diagnostic information from the media analytics process |
| 52 // over D-Bus as a Diagnostics proto message. |
| 53 virtual void GetDiagnostics(const DiagnosticsCallback& callback) = 0; |
| 54 |
| 55 // Factory function, creates new instance and returns ownership. |
| 56 // For normal usage, access the singleton via DbusThreadManager::Get(). |
| 57 static MediaAnalyticsClient* Create(); |
| 58 |
| 59 protected: |
| 60 MediaAnalyticsClient(); |
| 61 |
| 62 private: |
| 63 DISALLOW_COPY_AND_ASSIGN(MediaAnalyticsClient); |
| 64 }; |
| 65 |
| 66 } // namespace chromeos |
| 67 |
| 68 #endif // CHROMEOS_DBUS_MEDIA_ANALYTICS_CLIENT_H_ |
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