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| 1 // Copyright 2014 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 COMPONENTS_COPRESENCE_HANDLERS_AUDIO_AUDIO_DIRECTIVE_LIST_H_ | |
| 6 #define COMPONENTS_COPRESENCE_HANDLERS_AUDIO_AUDIO_DIRECTIVE_LIST_H_ | |
| 7 | |
| 8 #include <memory> | |
| 9 #include <string> | |
| 10 #include <vector> | |
| 11 | |
| 12 #include "base/callback_forward.h" | |
| 13 #include "base/macros.h" | |
| 14 #include "base/memory/ref_counted.h" | |
| 15 #include "base/time/default_tick_clock.h" | |
| 16 #include "base/time/time.h" | |
| 17 #include "components/copresence/handlers/audio/tick_clock_ref_counted.h" | |
| 18 #include "components/copresence/proto/data.pb.h" | |
| 19 | |
| 20 namespace media { | |
| 21 class AudioBusRefCounted; | |
| 22 } | |
| 23 | |
| 24 namespace copresence { | |
| 25 | |
| 26 class TickClockRefCounted; | |
| 27 | |
| 28 struct AudioDirective final { | |
| 29 // Default ctor, required by the priority queue. | |
| 30 AudioDirective(); | |
| 31 AudioDirective(const std::string& op_id, | |
| 32 base::TimeTicks end_time, | |
| 33 const Directive& server_directive); | |
| 34 | |
| 35 std::string op_id; | |
| 36 | |
| 37 // We're currently using TimeTicks to track time. This may not work for cases | |
| 38 // where your machine suspends. See crbug.com/426136 | |
| 39 base::TimeTicks end_time; | |
| 40 | |
| 41 Directive server_directive; | |
| 42 }; | |
| 43 | |
| 44 // This class maintains a list of active audio directives. It fetches the audio | |
| 45 // samples associated with a audio transmit directives and expires directives | |
| 46 // that have outlived their TTL. | |
| 47 // TODO(rkc): Once we implement more token technologies, move reusable code | |
| 48 // from here to a base class and inherit various XxxxDirectiveList | |
| 49 // classes from it. | |
| 50 class AudioDirectiveList final { | |
| 51 public: | |
| 52 explicit AudioDirectiveList(const scoped_refptr<TickClockRefCounted>& clock = | |
| 53 make_scoped_refptr(new TickClockRefCounted(new base::DefaultTickClock))); | |
| 54 ~AudioDirectiveList(); | |
| 55 | |
| 56 void AddDirective(const std::string& op_id, const Directive& directive); | |
| 57 void RemoveDirective(const std::string& op_id); | |
| 58 | |
| 59 std::unique_ptr<AudioDirective> GetActiveDirective(); | |
| 60 | |
| 61 const std::vector<AudioDirective>& directives() const; | |
| 62 | |
| 63 private: | |
| 64 // Comparator for comparing end_times on audio tokens. | |
| 65 class LatestFirstComparator { | |
| 66 public: | |
| 67 // This will sort our queue with the 'latest' time being the top. | |
| 68 bool operator()(const AudioDirective& left, | |
| 69 const AudioDirective& right) const { | |
| 70 return left.end_time < right.end_time; | |
| 71 } | |
| 72 }; | |
| 73 | |
| 74 std::vector<AudioDirective>::iterator FindDirectiveByOpId( | |
| 75 const std::string& op_id); | |
| 76 | |
| 77 // This vector will be organized as a heap with the latest time as the first | |
| 78 // element. Only currently active directives will exist in this list. | |
| 79 std::vector<AudioDirective> active_directives_; | |
| 80 | |
| 81 scoped_refptr<TickClockRefCounted> clock_; | |
| 82 | |
| 83 DISALLOW_COPY_AND_ASSIGN(AudioDirectiveList); | |
| 84 }; | |
| 85 | |
| 86 } // namespace copresence | |
| 87 | |
| 88 #endif // COMPONENTS_COPRESENCE_HANDLERS_AUDIO_AUDIO_DIRECTIVE_LIST_H_ | |
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Chromium Code Reviews
Issue 2130803002:
Deleting the copresence API. (Closed)
Base URL: https://chromium.googlesource.com/chromium/src.git@master