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e6b4cbe606
Fallback to a default value if the scalability mode is unset or not supported by the codec. The fallback logic is only enabled if the scalability mode is configured for any of the encodings for now (i.e. initial default values are not set). Bug: webrtc:11607 Change-Id: Ie632767b627a1dbbef71c59f9340573daf386c14 Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/287600 Reviewed-by: Erik Språng <sprang@webrtc.org> Reviewed-by: Florent Castelli <orphis@webrtc.org> Commit-Queue: Åsa Persson <asapersson@webrtc.org> Cr-Commit-Position: refs/heads/main@{#39074}
46 lines
1.6 KiB
C++
46 lines
1.6 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 MODULES_VIDEO_CODING_SVC_SCALABILITY_MODE_UTIL_H_
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#define MODULES_VIDEO_CODING_SVC_SCALABILITY_MODE_UTIL_H_
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#include "absl/strings/string_view.h"
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#include "absl/types/optional.h"
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#include "api/video_codecs/scalability_mode.h"
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#include "api/video_codecs/video_codec.h"
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namespace webrtc {
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enum class ScalabilityModeResolutionRatio {
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kTwoToOne, // The resolution ratio between spatial layers is 2:1.
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kThreeToTwo, // The resolution ratio between spatial layers is 1.5:1.
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};
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static constexpr char kDefaultScalabilityModeStr[] = "L1T2";
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absl::optional<ScalabilityMode> ScalabilityModeFromString(
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absl::string_view scalability_mode_string);
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InterLayerPredMode ScalabilityModeToInterLayerPredMode(
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ScalabilityMode scalability_mode);
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int ScalabilityModeToNumSpatialLayers(ScalabilityMode scalability_mode);
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int ScalabilityModeToNumTemporalLayers(ScalabilityMode scalability_mode);
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absl::optional<ScalabilityModeResolutionRatio> ScalabilityModeToResolutionRatio(
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ScalabilityMode scalability_mode);
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ScalabilityMode LimitNumSpatialLayers(ScalabilityMode scalability_mode,
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int max_spatial_layers);
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} // namespace webrtc
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#endif // MODULES_VIDEO_CODING_SVC_SCALABILITY_MODE_UTIL_H_
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