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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}
68 lines
2.4 KiB
C++
68 lines
2.4 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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#include "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 "api/array_view.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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#include "modules/rtp_rtcp/source/rtp_dependency_descriptor_reader.h"
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#include "modules/rtp_rtcp/source/rtp_dependency_descriptor_writer.h"
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#include "rtc_base/numerics/divide_round.h"
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namespace webrtc {
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constexpr RTPExtensionType RtpDependencyDescriptorExtension::kId;
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constexpr std::bitset<32> RtpDependencyDescriptorExtension::kAllChainsAreActive;
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bool RtpDependencyDescriptorExtension::Parse(
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rtc::ArrayView<const uint8_t> data,
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const FrameDependencyStructure* structure,
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DependencyDescriptor* descriptor) {
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RtpDependencyDescriptorReader reader(data, structure, descriptor);
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return reader.ParseSuccessful();
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}
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size_t RtpDependencyDescriptorExtension::ValueSize(
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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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RtpDependencyDescriptorWriter writer(/*data=*/{}, structure, active_chains,
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descriptor);
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return DivideRoundUp(writer.ValueSizeBits(), 8);
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}
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bool RtpDependencyDescriptorExtension::Write(
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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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RtpDependencyDescriptorWriter writer(data, structure, active_chains,
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descriptor);
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return writer.Write();
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}
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bool RtpDependencyDescriptorExtension::Parse(
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rtc::ArrayView<const uint8_t> data,
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DependencyDescriptorMandatory* descriptor) {
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if (data.size() < 3) {
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return false;
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}
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descriptor->set_first_packet_in_frame(data[0] & 0b1000'0000);
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descriptor->set_last_packet_in_frame(data[0] & 0b0100'0000);
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descriptor->set_template_id(data[0] & 0b0011'1111);
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descriptor->set_frame_number((uint16_t{data[1]} << 8) | data[2]);
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return true;
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}
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} // namespace webrtc
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