2013-07-10 02:45:36 +02:00
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/*
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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 "talk/base/byteorder.h"
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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 timestamp;
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uint32 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 GetRtpVersion(const void* data, size_t len, int* version);
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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* value);
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bool GetRtpSsrc(const void* data, size_t len, uint32* 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* value);
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bool GetRtpHeader(const void* data, size_t len, RtpHeader* header);
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// Assumes marker bit is 0.
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bool SetRtpHeaderFlags(
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void* data, size_t len,
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bool padding, bool extension, int csrc_count);
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bool SetRtpPayloadType(void* data, size_t len, int value);
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bool SetRtpSeqNum(void* data, size_t len, int value);
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bool SetRtpTimestamp(void* data, size_t len, uint32 value);
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bool SetRtpSsrc(void* data, size_t len, uint32 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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2014-06-20 01:54:12 +02:00
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bool IsRtpPacket(const void* data, size_t len);
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2013-07-10 02:45:36 +02:00
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} // namespace cricket
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#endif // TALK_MEDIA_BASE_RTPUTILS_H_
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