mirror of
https://github.com/mollyim/webrtc.git
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a1a7c638ec
Also move ScalabilityModeToString to api and add RTC_EXPORT so that Chromium can use it. Bug: chromium:986069 Change-Id: I5dbbb6de9b14ca20f3ae0630552dcd44595ad5ef Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/267780 Reviewed-by: Harald Alvestrand <hta@webrtc.org> Commit-Queue: Daniel.L (Byoungchan) Lee <daniel.l@hpcnt.com> Cr-Commit-Position: refs/heads/main@{#37444}
215 lines
6.5 KiB
C++
215 lines
6.5 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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#include "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 "rtc_base/checks.h"
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namespace webrtc {
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absl::optional<ScalabilityMode> ScalabilityModeFromString(
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absl::string_view mode_string) {
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if (mode_string == "L1T1")
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return ScalabilityMode::kL1T1;
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if (mode_string == "L1T2")
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return ScalabilityMode::kL1T2;
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if (mode_string == "L1T2h")
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return ScalabilityMode::kL1T2h;
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if (mode_string == "L1T3")
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return ScalabilityMode::kL1T3;
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if (mode_string == "L1T3h")
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return ScalabilityMode::kL1T3h;
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if (mode_string == "L2T1")
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return ScalabilityMode::kL2T1;
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if (mode_string == "L2T1h")
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return ScalabilityMode::kL2T1h;
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if (mode_string == "L2T1_KEY")
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return ScalabilityMode::kL2T1_KEY;
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if (mode_string == "L2T2")
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return ScalabilityMode::kL2T2;
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if (mode_string == "L2T2h")
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return ScalabilityMode::kL2T2h;
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if (mode_string == "L2T2_KEY")
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return ScalabilityMode::kL2T2_KEY;
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if (mode_string == "L2T2_KEY_SHIFT")
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return ScalabilityMode::kL2T2_KEY_SHIFT;
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if (mode_string == "L2T3")
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return ScalabilityMode::kL2T3;
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if (mode_string == "L2T3h")
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return ScalabilityMode::kL2T3h;
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if (mode_string == "L2T3_KEY")
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return ScalabilityMode::kL2T3_KEY;
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if (mode_string == "L3T1")
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return ScalabilityMode::kL3T1;
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if (mode_string == "L3T1h")
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return ScalabilityMode::kL3T1h;
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if (mode_string == "L3T1_KEY")
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return ScalabilityMode::kL3T1_KEY;
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if (mode_string == "L3T2")
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return ScalabilityMode::kL3T2;
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if (mode_string == "L3T2h")
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return ScalabilityMode::kL3T2h;
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if (mode_string == "L3T2_KEY")
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return ScalabilityMode::kL3T2_KEY;
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if (mode_string == "L3T3")
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return ScalabilityMode::kL3T3;
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if (mode_string == "L3T3h")
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return ScalabilityMode::kL3T3h;
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if (mode_string == "L3T3_KEY")
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return ScalabilityMode::kL3T3_KEY;
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if (mode_string == "S2T1")
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return ScalabilityMode::kS2T1;
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if (mode_string == "S2T3")
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return ScalabilityMode::kS2T3;
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if (mode_string == "S3T3")
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return ScalabilityMode::kS3T3;
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return absl::nullopt;
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}
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InterLayerPredMode ScalabilityModeToInterLayerPredMode(
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ScalabilityMode scalability_mode) {
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switch (scalability_mode) {
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case ScalabilityMode::kL1T1:
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case ScalabilityMode::kL1T2:
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case ScalabilityMode::kL1T2h:
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case ScalabilityMode::kL1T3:
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case ScalabilityMode::kL1T3h:
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case ScalabilityMode::kL2T1:
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case ScalabilityMode::kL2T1h:
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return InterLayerPredMode::kOn;
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case ScalabilityMode::kL2T1_KEY:
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return InterLayerPredMode::kOnKeyPic;
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case ScalabilityMode::kL2T2:
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case ScalabilityMode::kL2T2h:
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return InterLayerPredMode::kOn;
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case ScalabilityMode::kL2T2_KEY:
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case ScalabilityMode::kL2T2_KEY_SHIFT:
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return InterLayerPredMode::kOnKeyPic;
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case ScalabilityMode::kL2T3:
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case ScalabilityMode::kL2T3h:
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return InterLayerPredMode::kOn;
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case ScalabilityMode::kL2T3_KEY:
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return InterLayerPredMode::kOnKeyPic;
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case ScalabilityMode::kL3T1:
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case ScalabilityMode::kL3T1h:
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return InterLayerPredMode::kOn;
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case ScalabilityMode::kL3T1_KEY:
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return InterLayerPredMode::kOnKeyPic;
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case ScalabilityMode::kL3T2:
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case ScalabilityMode::kL3T2h:
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return InterLayerPredMode::kOn;
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case ScalabilityMode::kL3T2_KEY:
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return InterLayerPredMode::kOnKeyPic;
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case ScalabilityMode::kL3T3:
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case ScalabilityMode::kL3T3h:
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return InterLayerPredMode::kOn;
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case ScalabilityMode::kL3T3_KEY:
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return InterLayerPredMode::kOnKeyPic;
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case ScalabilityMode::kS2T1:
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case ScalabilityMode::kS2T3:
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case ScalabilityMode::kS3T3:
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return InterLayerPredMode::kOff;
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}
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RTC_CHECK_NOTREACHED();
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}
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int ScalabilityModeToNumSpatialLayers(ScalabilityMode scalability_mode) {
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switch (scalability_mode) {
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case ScalabilityMode::kL1T1:
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case ScalabilityMode::kL1T2:
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case ScalabilityMode::kL1T2h:
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case ScalabilityMode::kL1T3:
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case ScalabilityMode::kL1T3h:
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return 1;
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case ScalabilityMode::kL2T1:
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case ScalabilityMode::kL2T1h:
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case ScalabilityMode::kL2T1_KEY:
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case ScalabilityMode::kL2T2:
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case ScalabilityMode::kL2T2h:
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case ScalabilityMode::kL2T2_KEY:
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case ScalabilityMode::kL2T2_KEY_SHIFT:
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case ScalabilityMode::kL2T3:
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case ScalabilityMode::kL2T3h:
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case ScalabilityMode::kL2T3_KEY:
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return 2;
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case ScalabilityMode::kL3T1:
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case ScalabilityMode::kL3T1h:
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case ScalabilityMode::kL3T1_KEY:
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case ScalabilityMode::kL3T2:
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case ScalabilityMode::kL3T2h:
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case ScalabilityMode::kL3T2_KEY:
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case ScalabilityMode::kL3T3:
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case ScalabilityMode::kL3T3h:
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case ScalabilityMode::kL3T3_KEY:
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return 3;
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case ScalabilityMode::kS2T1:
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case ScalabilityMode::kS2T3:
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return 2;
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case ScalabilityMode::kS3T3:
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return 3;
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}
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RTC_CHECK_NOTREACHED();
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}
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int ScalabilityModeToNumTemporalLayers(ScalabilityMode scalability_mode) {
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switch (scalability_mode) {
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case ScalabilityMode::kL1T1:
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return 1;
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case ScalabilityMode::kL1T2:
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case ScalabilityMode::kL1T2h:
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return 2;
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case ScalabilityMode::kL1T3:
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case ScalabilityMode::kL1T3h:
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return 3;
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case ScalabilityMode::kL2T1:
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case ScalabilityMode::kL2T1h:
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case ScalabilityMode::kL2T1_KEY:
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return 1;
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case ScalabilityMode::kL2T2:
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case ScalabilityMode::kL2T2h:
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case ScalabilityMode::kL2T2_KEY:
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case ScalabilityMode::kL2T2_KEY_SHIFT:
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return 2;
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case ScalabilityMode::kL2T3:
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case ScalabilityMode::kL2T3h:
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case ScalabilityMode::kL2T3_KEY:
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return 3;
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case ScalabilityMode::kL3T1:
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case ScalabilityMode::kL3T1h:
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case ScalabilityMode::kL3T1_KEY:
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return 1;
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case ScalabilityMode::kL3T2:
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case ScalabilityMode::kL3T2h:
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case ScalabilityMode::kL3T2_KEY:
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return 2;
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case ScalabilityMode::kL3T3:
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case ScalabilityMode::kL3T3h:
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case ScalabilityMode::kL3T3_KEY:
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return 3;
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case ScalabilityMode::kS2T1:
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return 1;
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case ScalabilityMode::kS2T3:
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case ScalabilityMode::kS3T3:
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return 3;
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}
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RTC_CHECK_NOTREACHED();
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}
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} // namespace webrtc
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