| /* |
| * Copyright (c) 2022 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 API_VIDEO_CODECS_SCALABILITY_MODE_HELPER_H_ |
| #define API_VIDEO_CODECS_SCALABILITY_MODE_HELPER_H_ |
| |
| #include "absl/strings/string_view.h" |
| #include "absl/types/optional.h" |
| |
| namespace webrtc { |
| |
| // Returns the number of spatial layers from the `scalability_mode_string` |
| // or nullopt if the given mode is unknown. |
| absl::optional<int> ScalabilityModeStringToNumSpatialLayers( |
| absl::string_view scalability_mode_string); |
| |
| // Returns the number of temporal layers from the `scalability_mode_string` |
| // or nullopt if the given mode is unknown. |
| absl::optional<int> ScalabilityModeStringToNumTemporalLayers( |
| absl::string_view scalability_mode_string); |
| |
| } // namespace webrtc |
| |
| #endif // API_VIDEO_CODECS_SCALABILITY_MODE_HELPER_H_ |
