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1 /* | 1 /* |
2 * Copyright (c) 2015 The WebRTC project authors. All Rights Reserved. | 2 * Copyright (c) 2015 The WebRTC project authors. All Rights Reserved. |
3 * | 3 * |
4 * Use of this source code is governed by a BSD-style license | 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 | 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 | 6 * tree. An additional intellectual property rights grant can be found |
7 * in the file PATENTS. All contributing project authors may | 7 * in the file PATENTS. All contributing project authors may |
8 * be found in the AUTHORS file in the root of the source tree. | 8 * be found in the AUTHORS file in the root of the source tree. |
9 */ | 9 */ |
10 | 10 |
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49 int64_t rtt); | 49 int64_t rtt); |
50 | 50 |
51 // Set the start and max send bitrate used by the bandwidth management. | 51 // Set the start and max send bitrate used by the bandwidth management. |
52 // | 52 // |
53 // |observer| updates bitrates if already in use. | 53 // |observer| updates bitrates if already in use. |
54 // |min_bitrate_bps| = 0 equals no min bitrate. | 54 // |min_bitrate_bps| = 0 equals no min bitrate. |
55 // |max_bitrate_bps| = 0 equals no max bitrate. | 55 // |max_bitrate_bps| = 0 equals no max bitrate. |
56 // |enforce_min_bitrate| = 'true' will allocate at least |min_bitrate_bps| for | 56 // |enforce_min_bitrate| = 'true' will allocate at least |min_bitrate_bps| for |
57 // this observer, even if the BWE is too low, 'false' will allocate 0 to | 57 // this observer, even if the BWE is too low, 'false' will allocate 0 to |
58 // the observer if BWE doesn't allow |min_bitrate_bps|. | 58 // the observer if BWE doesn't allow |min_bitrate_bps|. |
59 // Returns bitrate allocated for |observer|. | 59 // Returns initial bitrate allocated for |observer|. |
60 // Note that |observer|->OnBitrateUpdated() will be called within the scope of | |
61 // this method with the current rtt, fraction_loss and available bitrate and | |
62 // that the bitrate in OnBitrateUpdated will be zero if the |observer| is | |
63 // currently not allowed to send data. | |
60 int AddObserver(BitrateAllocatorObserver* observer, | 64 int AddObserver(BitrateAllocatorObserver* observer, |
61 uint32_t min_bitrate_bps, | 65 uint32_t min_bitrate_bps, |
62 uint32_t max_bitrate_bps, | 66 uint32_t max_bitrate_bps, |
63 bool enforce_min_bitrate); | 67 bool enforce_min_bitrate); |
64 | 68 |
65 void RemoveObserver(BitrateAllocatorObserver* observer); | 69 void RemoveObserver(BitrateAllocatorObserver* observer); |
66 | 70 |
67 private: | 71 private: |
68 struct ObserverConfig { | 72 struct ObserverConfig { |
69 ObserverConfig(BitrateAllocatorObserver* observer, | 73 ObserverConfig(BitrateAllocatorObserver* observer, |
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89 EXCLUSIVE_LOCKS_REQUIRED(crit_sect_); | 93 EXCLUSIVE_LOCKS_REQUIRED(crit_sect_); |
90 | 94 |
91 typedef std::list<ObserverConfig> ObserverConfigList; | 95 typedef std::list<ObserverConfig> ObserverConfigList; |
92 ObserverConfigList::iterator FindObserverConfig( | 96 ObserverConfigList::iterator FindObserverConfig( |
93 const BitrateAllocatorObserver* observer) | 97 const BitrateAllocatorObserver* observer) |
94 EXCLUSIVE_LOCKS_REQUIRED(crit_sect_); | 98 EXCLUSIVE_LOCKS_REQUIRED(crit_sect_); |
95 | 99 |
96 typedef std::multimap<uint32_t, const ObserverConfig*> ObserverSortingMap; | 100 typedef std::multimap<uint32_t, const ObserverConfig*> ObserverSortingMap; |
97 typedef std::map<BitrateAllocatorObserver*, int> ObserverAllocation; | 101 typedef std::map<BitrateAllocatorObserver*, int> ObserverAllocation; |
98 | 102 |
99 ObserverAllocation AllocateBitrates() EXCLUSIVE_LOCKS_REQUIRED(crit_sect_); | 103 ObserverAllocation AllocateBitrates(uint32_t bitrate) |
104 EXCLUSIVE_LOCKS_REQUIRED(crit_sect_); | |
100 ObserverAllocation NormalRateAllocation(uint32_t bitrate, | 105 ObserverAllocation NormalRateAllocation(uint32_t bitrate, |
101 uint32_t sum_min_bitrates) | 106 uint32_t sum_min_bitrates) |
102 EXCLUSIVE_LOCKS_REQUIRED(crit_sect_); | 107 EXCLUSIVE_LOCKS_REQUIRED(crit_sect_); |
103 | 108 |
104 ObserverAllocation ZeroRateAllocation() EXCLUSIVE_LOCKS_REQUIRED(crit_sect_); | 109 ObserverAllocation ZeroRateAllocation() EXCLUSIVE_LOCKS_REQUIRED(crit_sect_); |
105 ObserverAllocation LowRateAllocation(uint32_t bitrate) | 110 ObserverAllocation LowRateAllocation(uint32_t bitrate) |
106 EXCLUSIVE_LOCKS_REQUIRED(crit_sect_); | 111 EXCLUSIVE_LOCKS_REQUIRED(crit_sect_); |
107 | 112 |
108 rtc::CriticalSection crit_sect_; | 113 rtc::CriticalSection crit_sect_; |
109 // Stored in a list to keep track of the insertion order. | 114 // Stored in a list to keep track of the insertion order. |
110 ObserverConfigList bitrate_observer_configs_; | 115 ObserverConfigList bitrate_observer_configs_; |
111 bool enforce_min_bitrate_ GUARDED_BY(crit_sect_); | 116 bool enforce_min_bitrate_ GUARDED_BY(crit_sect_); |
112 uint32_t last_bitrate_bps_ GUARDED_BY(crit_sect_); | 117 uint32_t last_bitrate_bps_ GUARDED_BY(crit_sect_); |
118 uint32_t last_none_zero_bitrate_bps_ GUARDED_BY(crit_sect_); | |
stefan-webrtc
2016/05/13 12:33:55
non_zero
perkj_webrtc
2016/05/13 13:03:28
Done.
| |
113 uint8_t last_fraction_loss_ GUARDED_BY(crit_sect_); | 119 uint8_t last_fraction_loss_ GUARDED_BY(crit_sect_); |
114 int64_t last_rtt_ GUARDED_BY(crit_sect_); | 120 int64_t last_rtt_ GUARDED_BY(crit_sect_); |
115 }; | 121 }; |
116 } // namespace webrtc | 122 } // namespace webrtc |
117 #endif // WEBRTC_CALL_BITRATE_ALLOCATOR_H_ | 123 #endif // WEBRTC_CALL_BITRATE_ALLOCATOR_H_ |
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