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00ca0044d4
Bug: None Change-Id: Ibe942de433435d256cd6827440136936d4b274d6 Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/225022 Reviewed-by: Erik Språng <sprang@webrtc.org> Commit-Queue: Danil Chapovalov <danilchap@webrtc.org> Cr-Commit-Position: refs/heads/master@{#34419}
46 lines
1.4 KiB
C++
46 lines
1.4 KiB
C++
/*
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* Copyright (c) 2021 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_util.h"
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#include <cstddef>
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#include <cstdint>
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#include "api/array_view.h"
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namespace webrtc {
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namespace {
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constexpr uint8_t kRtpVersion = 2;
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constexpr size_t kMinRtpPacketLen = 12;
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constexpr size_t kMinRtcpPacketLen = 4;
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bool HasCorrectRtpVersion(rtc::ArrayView<const uint8_t> packet) {
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return packet[0] >> 6 == kRtpVersion;
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}
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// For additional details, see http://tools.ietf.org/html/rfc5761#section-4
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bool PayloadTypeIsReservedForRtcp(uint8_t payload_type) {
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return 64 <= payload_type && payload_type < 96;
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}
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} // namespace
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bool IsRtpPacket(rtc::ArrayView<const uint8_t> packet) {
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return packet.size() >= kMinRtpPacketLen && HasCorrectRtpVersion(packet) &&
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!PayloadTypeIsReservedForRtcp(packet[1] & 0x7F);
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}
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bool IsRtcpPacket(rtc::ArrayView<const uint8_t> packet) {
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return packet.size() >= kMinRtcpPacketLen && HasCorrectRtpVersion(packet) &&
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PayloadTypeIsReservedForRtcp(packet[1] & 0x7F);
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}
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} // namespace webrtc
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