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https://github.com/mollyim/webrtc.git
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da7fe39b84
To make it natural to reuse them for vp9 Bug: webrtc:11999 Change-Id: If2ef7ca16b8be96e0e03bb19211d9f5eb74b2d3d Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/188620 Reviewed-by: Philip Eliasson <philipel@webrtc.org> Commit-Queue: Danil Chapovalov <danilchap@webrtc.org> Cr-Commit-Position: refs/heads/master@{#32414}
49 lines
2.4 KiB
C++
49 lines
2.4 KiB
C++
/*
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* Copyright (c) 2020 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_structure_l3t3.h"
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#include <vector>
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#include "api/transport/rtp/dependency_descriptor.h"
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namespace webrtc {
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ScalabilityStructureL3T3::~ScalabilityStructureL3T3() = default;
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FrameDependencyStructure ScalabilityStructureL3T3::DependencyStructure() const {
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FrameDependencyStructure structure;
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structure.num_decode_targets = 9;
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structure.num_chains = 3;
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structure.decode_target_protected_by_chain = {0, 0, 0, 1, 1, 1, 2, 2, 2};
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auto& t = structure.templates;
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t.resize(15);
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// Templates are shown in the order frames following them appear in the
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// stream, but in `structure.templates` array templates are sorted by
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// (`spatial_id`, `temporal_id`) since that is a dependency descriptor
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// requirement. Indexes are written in hex for nicer alignment.
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t[0x1].S(0).T(0).Dtis("SSSSSSSSS").ChainDiffs({0, 0, 0});
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t[0x6].S(1).T(0).Dtis("---SSSSSS").ChainDiffs({1, 1, 1}).FrameDiffs({1});
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t[0xB].S(2).T(0).Dtis("------SSS").ChainDiffs({2, 1, 1}).FrameDiffs({1});
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t[0x3].S(0).T(2).Dtis("--D--R--R").ChainDiffs({3, 2, 1}).FrameDiffs({3});
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t[0x8].S(1).T(2).Dtis("-----D--R").ChainDiffs({4, 3, 2}).FrameDiffs({3, 1});
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t[0xD].S(2).T(2).Dtis("--------D").ChainDiffs({5, 4, 3}).FrameDiffs({3, 1});
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t[0x2].S(0).T(1).Dtis("-DS-RR-RR").ChainDiffs({6, 5, 4}).FrameDiffs({6});
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t[0x7].S(1).T(1).Dtis("----DS-RR").ChainDiffs({7, 6, 5}).FrameDiffs({6, 1});
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t[0xC].S(2).T(1).Dtis("-------DS").ChainDiffs({8, 7, 6}).FrameDiffs({6, 1});
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t[0x4].S(0).T(2).Dtis("--D--R--R").ChainDiffs({9, 8, 7}).FrameDiffs({3});
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t[0x9].S(1).T(2).Dtis("-----D--R").ChainDiffs({10, 9, 8}).FrameDiffs({3, 1});
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t[0xE].S(2).T(2).Dtis("--------D").ChainDiffs({11, 10, 9}).FrameDiffs({3, 1});
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t[0x0].S(0).T(0).Dtis("SSSRRRRRR").ChainDiffs({12, 11, 10}).FrameDiffs({12});
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t[0x5].S(1).T(0).Dtis("---SSSRRR").ChainDiffs({1, 1, 1}).FrameDiffs({12, 1});
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t[0xA].S(2).T(0).Dtis("------SSS").ChainDiffs({2, 1, 1}).FrameDiffs({12, 1});
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return structure;
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}
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} // namespace webrtc
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