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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 CHROME_BROWSER_MEDIA_ROUTER_DISCOVERY_DIAL_DIAL_MEDIA_SINK_SERVICE_H_ |
| 6 #define CHROME_BROWSER_MEDIA_ROUTER_DISCOVERY_DIAL_DIAL_MEDIA_SINK_SERVICE_H_ |
| 7 |
| 8 #include <memory> |
| 9 #include <set> |
| 10 |
| 11 #include "chrome/browser/media/router/discovery/dial/device_description_service.
h" |
| 12 #include "chrome/browser/media/router/discovery/dial/dial_registry.h" |
| 13 #include "chrome/common/media_router/discovery/media_sink_internal.h" |
| 14 #include "chrome/common/media_router/discovery/media_sink_service.h" |
| 15 |
| 16 namespace media_router { |
| 17 |
| 18 class DeviceDescriptionService; |
| 19 class DialRegistry; |
| 20 |
| 21 // A service which can be used to start background discovery and resolution of |
| 22 // DIAL devices (Smart TVs, Game Consoles, etc.). |
| 23 // This class is not thread safe. All methods must be called from the IO thread. |
| 24 class DialMediaSinkService : public MediaSinkService, |
| 25 public DialRegistry::Observer { |
| 26 public: |
| 27 DialMediaSinkService(const OnSinksDiscoveredCallback& callback, |
| 28 net::URLRequestContextGetter* request_context); |
| 29 ~DialMediaSinkService() override; |
| 30 |
| 31 // MediaSinkService implementation |
| 32 void Start() override; |
| 33 |
| 34 void Stop(); |
| 35 |
| 36 protected: |
| 37 virtual DialRegistry* dial_registry(); |
| 38 |
| 39 // Returns instance of device description service. Create a new one if none |
| 40 // exists. |
| 41 virtual DeviceDescriptionService* GetDescriptionService(); |
| 42 |
| 43 private: |
| 44 friend class DialMediaSinkServiceTest; |
| 45 FRIEND_TEST_ALL_PREFIXES(DialMediaSinkServiceTest, TestStart); |
| 46 FRIEND_TEST_ALL_PREFIXES(DialMediaSinkServiceTest, TestFetchCompleted); |
| 47 FRIEND_TEST_ALL_PREFIXES(DialMediaSinkServiceTest, TestIsDifferent); |
| 48 FRIEND_TEST_ALL_PREFIXES(DialMediaSinkServiceTest, |
| 49 TestOnDeviceDescriptionAvailable); |
| 50 |
| 51 // api::dial::DialRegistry::Observer implementation |
| 52 void OnDialDeviceEvent(const DialRegistry::DeviceList& devices) override; |
| 53 void OnDialError(DialRegistry::DialErrorCode type) override; |
| 54 |
| 55 // Called when description service successfully fetches and parses device |
| 56 // description XML. Restart |finish_timer_| if it is not running. |
| 57 void OnDeviceDescriptionAvailable( |
| 58 const DialDeviceData& device_data, |
| 59 const ParsedDialDeviceDescription& description_data); |
| 60 |
| 61 // Called when fails to fetch or parse device description XML. |
| 62 void OnDeviceDescriptionError(const DialDeviceData& device, |
| 63 const std::string& error_message); |
| 64 |
| 65 // Called when |finish_timer_| expires. |
| 66 void OnFetchCompleted(); |
| 67 |
| 68 // Timer for finishing fetching. Starts in |OnDialDeviceEvent()|, and expires |
| 69 // 3 seconds later. If |OnDeviceDescriptionAvailable()| is called after |
| 70 // |finish_timer_| expires, |finish_timer_| is restarted. |
| 71 std::unique_ptr<base::OneShotTimer> finish_timer_; |
| 72 |
| 73 std::unique_ptr<DeviceDescriptionService> description_service_; |
| 74 |
| 75 // Sorted sinks from current round of discovery. |
| 76 std::set<MediaSinkInternal> current_sinks_; |
| 77 |
| 78 // Sorted sinks sent to Media Router Provider in last FetchCompleted(). |
| 79 std::set<MediaSinkInternal> mrp_sinks_; |
| 80 |
| 81 // Device data list from current round of discovery. |
| 82 DialRegistry::DeviceList current_devices_; |
| 83 |
| 84 scoped_refptr<net::URLRequestContextGetter> request_context_; |
| 85 }; |
| 86 |
| 87 } // namespace media_router |
| 88 |
| 89 #endif // CHROME_BROWSER_MEDIA_ROUTER_DISCOVERY_DIAL_DIAL_MEDIA_SINK_SERVICE_H_ |
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