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/*
* Copyright (c) 2019 The WebRTC project authors. All Rights Reserved.
*
* Use of this source code is governed by a BSD-style license
* that can be found in the LICENSE file in the root of the source
* tree. An additional intellectual property rights grant can be found
* in the file PATENTS. All contributing project authors may
* be found in the AUTHORS file in the root of the source tree.
*/
#include "modules/rtp_rtcp/source/rtp_dependency_descriptor_extension.h"
#include <bitset>
#include <cstdint>
#include "api/array_view.h"
#include "api/transport/rtp/dependency_descriptor.h"
#include "modules/rtp_rtcp/include/rtp_rtcp_defines.h"
#include "modules/rtp_rtcp/source/rtp_dependency_descriptor_reader.h"
#include "modules/rtp_rtcp/source/rtp_dependency_descriptor_writer.h"
#include "rtc_base/numerics/divide_round.h"
namespace webrtc {
constexpr RTPExtensionType RtpDependencyDescriptorExtension::kId;
constexpr std::bitset<32> RtpDependencyDescriptorExtension::kAllChainsAreActive;
bool RtpDependencyDescriptorExtension::Parse(
rtc::ArrayView<const uint8_t> data,
const FrameDependencyStructure* structure,
DependencyDescriptor* descriptor) {
RtpDependencyDescriptorReader reader(data, structure, descriptor);
return reader.ParseSuccessful();
}
size_t RtpDependencyDescriptorExtension::ValueSize(
const FrameDependencyStructure& structure,
std::bitset<32> active_chains,
const DependencyDescriptor& descriptor) {
RtpDependencyDescriptorWriter writer(/*data=*/{}, structure, active_chains,
descriptor);
return DivideRoundUp(writer.ValueSizeBits(), 8);
}
bool RtpDependencyDescriptorExtension::Write(
rtc::ArrayView<uint8_t> data,
const FrameDependencyStructure& structure,
std::bitset<32> active_chains,
const DependencyDescriptor& descriptor) {
RtpDependencyDescriptorWriter writer(data, structure, active_chains,
descriptor);
return writer.Write();
}
} // namespace webrtc
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