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1 /* | |
2 * Copyright 2017 The WebRTC Project Authors. All rights reserved. | |
3 * | |
4 * Use of this source code is governed by a BSD-style license | |
5 * that can be found in the LICENSE file in the root of the source | |
6 * tree. An additional intellectual property rights grant can be found | |
7 * in the file PATENTS. All contributing project authors may | |
8 * be found in the AUTHORS file in the root of the source tree. | |
9 */ | |
10 | |
11 #ifndef WEBRTC_RTC_BASE_BITRATEALLOCATIONSTRATEGY_H_ | |
12 #define WEBRTC_RTC_BASE_BITRATEALLOCATIONSTRATEGY_H_ | |
13 | |
14 #include <map> | |
15 #include <memory> | |
16 #include <string> | |
17 #include <vector> | |
18 #include "webrtc/rtc_base/checks.h" | |
19 #include "webrtc/rtc_base/refcount.h" | |
20 #include "webrtc/rtc_base/refcountedobject.h" | |
21 | |
22 namespace rtc { | |
23 | |
24 // Plugable strategy allows configuration of bitrate allocation per media track. | |
25 class BitrateAllocationStrategy : public RefCountedObject<RefCountInterface> { | |
nisse-webrtc
2017/09/06 09:04:02
Just spotted this, you should not inherit RefCount
alexnarest
2017/09/08 17:09:23
I think it is more convenient to app to create the
| |
26 public: | |
27 struct TrackConfig { | |
28 TrackConfig(uint32_t min_bitrate_bps, | |
29 uint32_t max_bitrate_bps, | |
30 bool enforce_min_bitrate, | |
31 std::string track_id) | |
32 : min_bitrate_bps(min_bitrate_bps), | |
33 max_bitrate_bps(max_bitrate_bps), | |
34 enforce_min_bitrate(enforce_min_bitrate), | |
35 track_id(track_id) {} | |
36 TrackConfig(const TrackConfig& track_config) = default; | |
37 TrackConfig() {} | |
38 | |
39 uint32_t min_bitrate_bps; | |
40 uint32_t max_bitrate_bps; | |
41 bool enforce_min_bitrate; | |
42 std::string track_id; | |
43 }; | |
44 | |
45 typedef std::vector<std::unique_ptr<TrackConfig>> TrackConfigs; | |
46 | |
47 std::vector<uint32_t> SetAllBitratesToMinimum( | |
48 const TrackConfigs& track_configs); | |
49 std::vector<uint32_t> DistributeBitratesEvenly( | |
50 const TrackConfigs& track_configs, | |
51 uint32_t available_bitrate); | |
52 | |
53 virtual std::vector<uint32_t> AllocateBitrates( | |
54 uint32_t available_bitrate, | |
55 const TrackConfigs& track_configs) = 0; | |
56 }; | |
57 | |
58 // Simple allocation strategy giving priority to audio at low bitrates. | |
59 class AudioPriorityBitrateAllocationStrategy | |
60 : public BitrateAllocationStrategy { | |
61 public: | |
62 AudioPriorityBitrateAllocationStrategy(std::string audio_track_id, | |
63 uint32_t sufficient_audio_bitrate); | |
64 std::vector<uint32_t> AllocateBitrates( | |
65 uint32_t available_bitrate, | |
66 const TrackConfigs& track_configs) override; | |
67 | |
68 private: | |
69 std::string audio_track_id_; | |
70 uint32_t sufficient_audio_bitrate_; | |
71 }; | |
72 } // namespace rtc | |
73 | |
74 #endif // WEBRTC_RTC_BASE_BITRATEALLOCATIONSTRATEGY_H_ | |
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