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295758848c
This will help to reduce redundant ScalabilityMode to temporal layer count mapping in blink. Bug: chromium:40763991 Change-Id: Ida3e6abb91383e27465eb1b697ad9431935cf9ff Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/362486 Reviewed-by: Harald Alvestrand <hta@webrtc.org> Reviewed-by: Erik Språng <sprang@webrtc.org> Commit-Queue: Jianlin Qiu <jianlin.qiu@intel.com> Cr-Commit-Position: refs/heads/main@{#43031}
39 lines
1.5 KiB
C++
39 lines
1.5 KiB
C++
/*
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* Copyright (c) 2022 The WebRTC project authors. All Rights Reserved.
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*
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* Use of this source code is governed by a BSD-style license
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* that can be found in the LICENSE file in the root of the source
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* tree. An additional intellectual property rights grant can be found
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* in the file PATENTS. All contributing project authors may
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* be found in the AUTHORS file in the root of the source tree.
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*/
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#ifndef API_VIDEO_CODECS_SCALABILITY_MODE_HELPER_H_
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#define API_VIDEO_CODECS_SCALABILITY_MODE_HELPER_H_
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#include <optional>
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#include "absl/strings/string_view.h"
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#include "api/video_codecs/scalability_mode.h"
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#include "rtc_base/system/rtc_export.h"
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namespace webrtc {
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// Returns the number of spatial layers from the `scalability_mode_string`
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// or nullopt if the given mode is unknown.
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RTC_EXPORT std::optional<int> ScalabilityModeStringToNumSpatialLayers(
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absl::string_view scalability_mode_string);
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// Returns the number of temporal layers from the `scalability_mode_string`
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// or nullopt if the given mode is unknown.
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RTC_EXPORT std::optional<int> ScalabilityModeStringToNumTemporalLayers(
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absl::string_view scalability_mode_string);
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// Convert the `scalability_mode_string` to the scalability mode enum value
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// or nullopt if the given mode is unknown.
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RTC_EXPORT std::optional<ScalabilityMode> ScalabilityModeStringToEnum(
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absl::string_view scalability_mode_string);
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} // namespace webrtc
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#endif // API_VIDEO_CODECS_SCALABILITY_MODE_HELPER_H_
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