dc305db059
When libjingle is compied with ENABLE_EXTERNAL_AUTH the sending socket needs to update RTP header in order for the outgoing packet to be valid. The corresponding code was in chromium in content/browser/renderer_host/p2p/socket_host.cc and it was impossible to reuse it anywhere else. This CL moves this code to talk/media/base/rtputils.h/cc, so it can be used outside of chrome. BUG=crbug.com/547158 R=pthatcher@webrtc.org Review URL: https://codereview.webrtc.org/1578323002 . Cr-Commit-Position: refs/heads/master@{#11261}
100 lines
3.9 KiB
C++
100 lines
3.9 KiB
C++
/*
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* libjingle
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* Copyright 2011 Google Inc.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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*
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* 1. Redistributions of source code must retain the above copyright notice,
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* this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright notice,
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* this list of conditions and the following disclaimer in the documentation
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* and/or other materials provided with the distribution.
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* 3. The name of the author may not be used to endorse or promote products
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* derived from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
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* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
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* EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
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* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
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* OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
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* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
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* OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
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* ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#ifndef TALK_MEDIA_BASE_RTPUTILS_H_
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#define TALK_MEDIA_BASE_RTPUTILS_H_
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#include "webrtc/base/byteorder.h"
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namespace rtc {
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struct PacketTimeUpdateParams;
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} // namespace rtc
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namespace cricket {
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const size_t kMinRtpPacketLen = 12;
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const size_t kMaxRtpPacketLen = 2048;
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const size_t kMinRtcpPacketLen = 4;
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struct RtpHeader {
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int payload_type;
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int seq_num;
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uint32_t timestamp;
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uint32_t ssrc;
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};
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enum RtcpTypes {
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kRtcpTypeSR = 200, // Sender report payload type.
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kRtcpTypeRR = 201, // Receiver report payload type.
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kRtcpTypeSDES = 202, // SDES payload type.
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kRtcpTypeBye = 203, // BYE payload type.
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kRtcpTypeApp = 204, // APP payload type.
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kRtcpTypeRTPFB = 205, // Transport layer Feedback message payload type.
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kRtcpTypePSFB = 206, // Payload-specific Feedback message payload type.
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};
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bool GetRtpPayloadType(const void* data, size_t len, int* value);
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bool GetRtpSeqNum(const void* data, size_t len, int* value);
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bool GetRtpTimestamp(const void* data, size_t len, uint32_t* value);
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bool GetRtpSsrc(const void* data, size_t len, uint32_t* value);
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bool GetRtpHeaderLen(const void* data, size_t len, size_t* value);
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bool GetRtcpType(const void* data, size_t len, int* value);
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bool GetRtcpSsrc(const void* data, size_t len, uint32_t* value);
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bool GetRtpHeader(const void* data, size_t len, RtpHeader* header);
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bool SetRtpSsrc(void* data, size_t len, uint32_t value);
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// Assumes version 2, no padding, no extensions, no csrcs.
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bool SetRtpHeader(void* data, size_t len, const RtpHeader& header);
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bool IsRtpPacket(const void* data, size_t len);
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// True if |payload type| is 0-127.
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bool IsValidRtpPayloadType(int payload_type);
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// Verifies that a packet has a valid RTP header.
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bool ValidateRtpHeader(const uint8_t* rtp,
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size_t length,
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size_t* header_length);
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// Helper method which updates the absolute send time extension if present.
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bool UpdateRtpAbsSendTimeExtension(uint8_t* rtp,
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size_t length,
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int extension_id,
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uint64_t time_us);
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// Applies specified |options| to the packet. It updates the absolute send time
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// extension header if it is present present then updates HMAC.
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bool ApplyPacketOptions(uint8_t* data,
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size_t length,
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const rtc::PacketTimeUpdateParams& packet_time_params,
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uint64_t time_us);
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} // namespace cricket
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#endif // TALK_MEDIA_BASE_RTPUTILS_H_
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