57 lines
1.7 KiB
C++
57 lines
1.7 KiB
C++
/*
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* Copyright (c) 2016-present The ZLMediaKit project authors. All Rights Reserved.
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*
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* This file is part of ZLMediaKit(https://github.com/ZLMediaKit/ZLMediaKit).
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*
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* Use of this source code is governed by MIT-like license that can be found in the
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* LICENSE file in the root of the source tree. All contributing project authors
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* may be found in the AUTHORS file in the root of the source tree.
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*/
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#include "RtpCodec.h"
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namespace mediakit{
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RtpPacket::Ptr RtpInfo::makeRtp(TrackType type, const void* data, size_t len, bool mark, uint64_t stamp) {
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uint16_t payload_len = (uint16_t) (len + RtpPacket::kRtpHeaderSize);
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auto rtp = RtpPacket::create();
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rtp->setCapacity(payload_len + RtpPacket::kRtpTcpHeaderSize);
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rtp->setSize(payload_len + RtpPacket::kRtpTcpHeaderSize);
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rtp->sample_rate = _sample_rate;
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rtp->type = type;
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rtp->track_index = _track_index;
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// rtsp over tcp 头 [AUTO-TRANSLATED:4225b9ec]
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// rtsp over tcp header
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auto ptr = (uint8_t *) rtp->data();
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ptr[0] = '$';
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ptr[1] = _interleaved;
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ptr[2] = payload_len >> 8;
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ptr[3] = payload_len & 0xFF;
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// rtp头 [AUTO-TRANSLATED:64aef747]
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// rtp header
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auto header = rtp->getHeader();
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header->version = RtpPacket::kRtpVersion;
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header->padding = 0;
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header->ext = 0;
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header->csrc = 0;
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header->mark = mark;
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header->pt = _pt;
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header->seq = htons(_seq);
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++_seq;
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header->stamp = htonl(uint64_t(stamp) * _sample_rate / 1000);
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header->ssrc = htonl(_ssrc);
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rtp->ntp_stamp = stamp;
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// 有效负载 [AUTO-TRANSLATED:8530a274]
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// payload
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if (data) {
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memcpy(&ptr[RtpPacket::kRtpHeaderSize + RtpPacket::kRtpTcpHeaderSize], data, len);
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}
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return rtp;
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}
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}//namespace mediakit
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