blob: aef955a9a5ef635a8e5d7a99e167676f8eb33632 [file] [log] [blame]
* 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.
#include "absl/strings/string_view.h"
#include "absl/types/optional.h"
#include "api/video_codecs/scalability_mode.h"
#include "api/video_codecs/video_codec.h"
namespace webrtc {
enum class ScalabilityModeResolutionRatio {
kTwoToOne, // The resolution ratio between spatial layers is 2:1.
kThreeToTwo, // The resolution ratio between spatial layers is 1.5:1.
absl::optional<ScalabilityMode> ScalabilityModeFromString(
absl::string_view scalability_mode_string);
InterLayerPredMode ScalabilityModeToInterLayerPredMode(
ScalabilityMode scalability_mode);
int ScalabilityModeToNumSpatialLayers(ScalabilityMode scalability_mode);
int ScalabilityModeToNumTemporalLayers(ScalabilityMode scalability_mode);
absl::optional<ScalabilityModeResolutionRatio> ScalabilityModeToResolutionRatio(
ScalabilityMode scalability_mode);
ScalabilityMode LimitNumSpatialLayers(ScalabilityMode scalability_mode,
int max_spatial_layers);
} // namespace webrtc