1 /* 2 * Copyright (c) 2018 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 API_TRANSPORT_BITRATE_SETTINGS_H_ 12 #define API_TRANSPORT_BITRATE_SETTINGS_H_ 13 14 #include <algorithm> 15 16 #include "absl/types/optional.h" 17 #include "rtc_base/system/rtc_export.h" 18 19 namespace webrtc { 20 21 // Configuration of send bitrate. The `start_bitrate_bps` value is 22 // used for multiple purposes, both as a prior in the bandwidth 23 // estimator, and for initial configuration of the encoder. We may 24 // want to create separate apis for those, and use a smaller struct 25 // with only the min and max constraints. 26 struct RTC_EXPORT BitrateSettings { 27 BitrateSettings(); 28 ~BitrateSettings(); 29 BitrateSettings(const BitrateSettings&); 30 // 0 <= min <= start <= max should hold for set parameters. 31 absl::optional<int> min_bitrate_bps; 32 absl::optional<int> start_bitrate_bps; 33 absl::optional<int> max_bitrate_bps; 34 }; 35 36 // TODO(srte): BitrateConstraints and BitrateSettings should be merged. 37 // Both represent the same kind data, but are using different default 38 // initializer and representation of unset values. 39 struct BitrateConstraints { 40 int min_bitrate_bps = 0; 41 int start_bitrate_bps = kDefaultStartBitrateBps; 42 int max_bitrate_bps = -1; 43 44 private: 45 static constexpr int kDefaultStartBitrateBps = 300000; 46 }; 47 48 } // namespace webrtc 49 50 #endif // API_TRANSPORT_BITRATE_SETTINGS_H_ 51