summaryrefslogtreecommitdiffstats
path: root/third_party/libwebrtc/api/video_codecs/scalability_mode_helper.h
blob: 21dcfc2f30d4d76214404d6720e8827e2f4104ba (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
/*
 *  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"
#include "api/video_codecs/scalability_mode.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);

// Convert the `scalability_mode_string` to the scalability mode enum value
// or nullopt if the given mode is unknown.
absl::optional<ScalabilityMode> ScalabilityModeStringToEnum(
    absl::string_view scalability_mode_string);

}  // namespace webrtc

#endif  // API_VIDEO_CODECS_SCALABILITY_MODE_HELPER_H_