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1 // Copyright 2014 The Chromium Authors. All rights reserved. | 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 | 2 // Use of this source code is governed by a BSD-style license that can be |
3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
4 | 4 |
5 #ifndef COMPONENTS_COPRESENCE_HANDLERS_AUDIO_AUDIO_DIRECTIVE_LIST_H_ | 5 #ifndef COMPONENTS_COPRESENCE_HANDLERS_AUDIO_AUDIO_DIRECTIVE_LIST_H_ |
6 #define COMPONENTS_COPRESENCE_HANDLERS_AUDIO_AUDIO_DIRECTIVE_LIST_H_ | 6 #define COMPONENTS_COPRESENCE_HANDLERS_AUDIO_AUDIO_DIRECTIVE_LIST_H_ |
7 | 7 |
8 #include <string> | 8 #include <string> |
9 #include <vector> | 9 #include <vector> |
10 | 10 |
11 #include "base/callback_forward.h" | 11 #include "base/callback_forward.h" |
12 #include "base/memory/ref_counted.h" | 12 #include "base/memory/ref_counted.h" |
13 #include "base/memory/scoped_ptr.h" | 13 #include "base/memory/scoped_ptr.h" |
14 #include "base/time/default_tick_clock.h" | 14 #include "base/time/default_tick_clock.h" |
15 #include "base/time/time.h" | 15 #include "base/time/time.h" |
16 #include "components/copresence/handlers/audio/tick_clock_ref_counted.h" | 16 #include "components/copresence/handlers/audio/tick_clock_ref_counted.h" |
17 #include "components/copresence/proto/data.pb.h" | |
18 | 17 |
19 namespace media { | 18 namespace media { |
20 class AudioBusRefCounted; | 19 class AudioBusRefCounted; |
21 } | 20 } |
22 | 21 |
23 namespace copresence { | 22 namespace copresence { |
24 | 23 |
25 class TickClockRefCounted; | 24 class TickClockRefCounted; |
26 | 25 |
27 struct AudioDirective final { | 26 struct AudioDirective final { |
28 // Default ctor, required by the priority queue. | 27 // Default ctor, required by the priority queue. |
29 AudioDirective(); | 28 AudioDirective(); |
30 AudioDirective(const std::string& op_id, | 29 AudioDirective(const std::string& op_id, base::TimeTicks end_time); |
31 base::TimeTicks end_time, | |
32 const Directive& server_directive); | |
33 | 30 |
34 std::string op_id; | 31 std::string op_id; |
35 | |
36 // We're currently using TimeTicks to track time. This may not work for cases | 32 // We're currently using TimeTicks to track time. This may not work for cases |
37 // where your machine suspends. See crbug.com/426136 | 33 // where your machine suspends. See crbug.com/426136 |
38 base::TimeTicks end_time; | 34 base::TimeTicks end_time; |
39 | |
40 Directive server_directive; | |
41 }; | 35 }; |
42 | 36 |
43 // This class maintains a list of active audio directives. It fetches the audio | 37 // This class maintains a list of active audio directives. It fetches the audio |
44 // samples associated with a audio transmit directives and expires directives | 38 // samples associated with a audio transmit directives and expires directives |
45 // that have outlived their TTL. | 39 // that have outlived their TTL. |
46 // TODO(rkc): Once we implement more token technologies, move reusable code | 40 // TODO(rkc): Once we implement more token technologies, move reusable code |
47 // from here to a base class and inherit various XxxxDirectiveList | 41 // from here to a base class and inherit various XxxxDirectiveList |
48 // classes from it. | 42 // classes from it. |
49 class AudioDirectiveList final { | 43 class AudioDirectiveList { |
50 public: | 44 public: |
51 explicit AudioDirectiveList(const scoped_refptr<TickClockRefCounted>& clock = | 45 explicit AudioDirectiveList(const scoped_refptr<TickClockRefCounted>& clock = |
52 make_scoped_refptr(new TickClockRefCounted(new base::DefaultTickClock))); | 46 make_scoped_refptr(new TickClockRefCounted(new base::DefaultTickClock))); |
53 ~AudioDirectiveList(); | 47 ~AudioDirectiveList(); |
54 | 48 |
55 void AddDirective(const std::string& op_id, const Directive& directive); | 49 void AddDirective(const std::string& op_id, base::TimeDelta ttl); |
56 void RemoveDirective(const std::string& op_id); | 50 void RemoveDirective(const std::string& op_id); |
57 | 51 |
58 scoped_ptr<AudioDirective> GetActiveDirective(); | 52 scoped_ptr<AudioDirective> GetActiveDirective(); |
59 | 53 |
60 const std::vector<AudioDirective>& directives() const; | |
61 | |
62 private: | 54 private: |
63 // Comparator for comparing end_times on audio tokens. | 55 // Comparator for comparing end_times on audio tokens. |
64 class LatestFirstComparator { | 56 class LatestFirstComparator { |
65 public: | 57 public: |
66 // This will sort our queue with the 'latest' time being the top. | 58 // This will sort our queue with the 'latest' time being the top. |
67 bool operator()(const AudioDirective& left, | 59 bool operator()(const AudioDirective& left, |
68 const AudioDirective& right) const { | 60 const AudioDirective& right) const { |
69 return left.end_time < right.end_time; | 61 return left.end_time < right.end_time; |
70 } | 62 } |
71 }; | 63 }; |
72 | 64 |
73 std::vector<AudioDirective>::iterator FindDirectiveByOpId( | 65 std::vector<AudioDirective>::iterator FindDirectiveByOpId( |
74 const std::string& op_id); | 66 const std::string& op_id); |
75 | 67 |
76 // This vector will be organized as a heap with the latest time as the first | 68 // This vector will be organized as a heap with the latest time as the first |
77 // element. Only currently active directives will exist in this list. | 69 // element. Only currently active directives will exist in this list. |
78 std::vector<AudioDirective> active_directives_; | 70 std::vector<AudioDirective> active_directives_; |
79 | 71 |
80 scoped_refptr<TickClockRefCounted> clock_; | 72 scoped_refptr<TickClockRefCounted> clock_; |
81 | 73 |
82 DISALLOW_COPY_AND_ASSIGN(AudioDirectiveList); | 74 DISALLOW_COPY_AND_ASSIGN(AudioDirectiveList); |
83 }; | 75 }; |
84 | 76 |
85 } // namespace copresence | 77 } // namespace copresence |
86 | 78 |
87 #endif // COMPONENTS_COPRESENCE_HANDLERS_AUDIO_AUDIO_DIRECTIVE_LIST_H_ | 79 #endif // COMPONENTS_COPRESENCE_HANDLERS_AUDIO_AUDIO_DIRECTIVE_LIST_H_ |
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