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b2f827cb79
Same can be achieved by having multiple Parse functions in the same RtpDependencyDescriptorExtension trait Bug: None Change-Id: I4eab0001d1ffff631a9d70fafde13e51f5c6ce36 Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/340320 Reviewed-by: Philip Eliasson <philipel@webrtc.org> Commit-Queue: Danil Chapovalov <danilchap@webrtc.org> Cr-Commit-Position: refs/heads/main@{#41786}
64 lines
2.6 KiB
C++
64 lines
2.6 KiB
C++
/*
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* Copyright (c) 2019 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_RTP_RTCP_SOURCE_RTP_DEPENDENCY_DESCRIPTOR_EXTENSION_H_
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#define MODULES_RTP_RTCP_SOURCE_RTP_DEPENDENCY_DESCRIPTOR_EXTENSION_H_
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#include <bitset>
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#include <cstdint>
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#include "absl/strings/string_view.h"
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#include "api/array_view.h"
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#include "api/rtp_parameters.h"
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#include "api/transport/rtp/dependency_descriptor.h"
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#include "modules/rtp_rtcp/include/rtp_rtcp_defines.h"
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namespace webrtc {
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// Trait to read/write the dependency descriptor extension as described in
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// https://aomediacodec.github.io/av1-rtp-spec/#dependency-descriptor-rtp-header-extension
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class RtpDependencyDescriptorExtension {
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public:
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static constexpr RTPExtensionType kId = kRtpExtensionDependencyDescriptor;
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static constexpr absl::string_view Uri() {
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return RtpExtension::kDependencyDescriptorUri;
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}
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static bool Parse(rtc::ArrayView<const uint8_t> data,
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const FrameDependencyStructure* structure,
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DependencyDescriptor* descriptor);
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// Reads the mandatory part of the descriptor.
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// Such read is stateless, i.e., doesn't require `FrameDependencyStructure`.
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static bool Parse(rtc::ArrayView<const uint8_t> data,
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DependencyDescriptorMandatory* descriptor);
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static size_t ValueSize(const FrameDependencyStructure& structure,
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const DependencyDescriptor& descriptor) {
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return ValueSize(structure, kAllChainsAreActive, descriptor);
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}
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static size_t ValueSize(const FrameDependencyStructure& structure,
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std::bitset<32> active_chains,
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const DependencyDescriptor& descriptor);
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static bool Write(rtc::ArrayView<uint8_t> data,
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const FrameDependencyStructure& structure,
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const DependencyDescriptor& descriptor) {
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return Write(data, structure, kAllChainsAreActive, descriptor);
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}
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static bool Write(rtc::ArrayView<uint8_t> data,
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const FrameDependencyStructure& structure,
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std::bitset<32> active_chains,
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const DependencyDescriptor& descriptor);
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private:
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static constexpr std::bitset<32> kAllChainsAreActive = ~uint32_t{0};
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};
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} // namespace webrtc
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#endif // MODULES_RTP_RTCP_SOURCE_RTP_DEPENDENCY_DESCRIPTOR_EXTENSION_H_
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