From 6bf0a5cb5034a7e684dcc3500e841785237ce2dd Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Sun, 7 Apr 2024 19:32:43 +0200 Subject: Adding upstream version 1:115.7.0. Signed-off-by: Daniel Baumann --- .../libwebrtc/call/rtp_bitrate_configurator.h | 77 ++++++++++++++++++++++ 1 file changed, 77 insertions(+) create mode 100644 third_party/libwebrtc/call/rtp_bitrate_configurator.h (limited to 'third_party/libwebrtc/call/rtp_bitrate_configurator.h') diff --git a/third_party/libwebrtc/call/rtp_bitrate_configurator.h b/third_party/libwebrtc/call/rtp_bitrate_configurator.h new file mode 100644 index 0000000000..5cb779a3b3 --- /dev/null +++ b/third_party/libwebrtc/call/rtp_bitrate_configurator.h @@ -0,0 +1,77 @@ +/* + * Copyright (c) 2018 The WebRTC project authors. All Rights Reserved. + * + * Use of this source code is governed by a BSD-style license + * that can be found in the LICENSE file in the root of the source + * tree. An additional intellectual property rights grant can be found + * in the file PATENTS. All contributing project authors may + * be found in the AUTHORS file in the root of the source tree. + */ + +#ifndef CALL_RTP_BITRATE_CONFIGURATOR_H_ +#define CALL_RTP_BITRATE_CONFIGURATOR_H_ + +#include "absl/types/optional.h" +#include "api/transport/bitrate_settings.h" +#include "api/units/data_rate.h" + +namespace webrtc { + +// RtpBitrateConfigurator calculates the bitrate configuration based on received +// remote configuration combined with local overrides. +class RtpBitrateConfigurator { + public: + explicit RtpBitrateConfigurator(const BitrateConstraints& bitrate_config); + ~RtpBitrateConfigurator(); + + RtpBitrateConfigurator(const RtpBitrateConfigurator&) = delete; + RtpBitrateConfigurator& operator=(const RtpBitrateConfigurator&) = delete; + + BitrateConstraints GetConfig() const; + + // The greater min and smaller max set by this and SetClientBitratePreferences + // will be used. The latest non-negative start value from either call will be + // used. Specifying a start bitrate (>0) will reset the current bitrate + // estimate. This is due to how the 'x-google-start-bitrate' flag is currently + // implemented. Passing -1 leaves the start bitrate unchanged. Behavior is not + // guaranteed for other negative values or 0. + // The optional return value is set with new configuration if it was updated. + absl::optional UpdateWithSdpParameters( + const BitrateConstraints& bitrate_config_); + + // The greater min and smaller max set by this and SetSdpBitrateParameters + // will be used. The latest non-negative start value form either call will be + // used. Specifying a start bitrate will reset the current bitrate estimate. + // Assumes 0 <= min <= start <= max holds for set parameters. + // Update the bitrate configuration + // The optional return value is set with new configuration if it was updated. + absl::optional UpdateWithClientPreferences( + const BitrateSettings& bitrate_mask); + + // Apply a cap for relayed calls. + absl::optional UpdateWithRelayCap(DataRate cap); + + private: + // Applies update to the BitrateConstraints cached in `config_`, resetting + // with `new_start` if set. + absl::optional UpdateConstraints( + const absl::optional& new_start); + + // Bitrate config used until valid bitrate estimates are calculated. Also + // used to cap total bitrate used. This comes from the remote connection. + BitrateConstraints bitrate_config_; + + // The config mask set by SetClientBitratePreferences. + // 0 <= min <= start <= max + BitrateSettings bitrate_config_mask_; + + // The config set by SetSdpBitrateParameters. + // min >= 0, start != 0, max == -1 || max > 0 + BitrateConstraints base_bitrate_config_; + + // Bandwidth cap applied for relayed calls. + DataRate max_bitrate_over_relay_ = DataRate::PlusInfinity(); +}; +} // namespace webrtc + +#endif // CALL_RTP_BITRATE_CONFIGURATOR_H_ -- cgit v1.2.3