95 lines
3.5 KiB
C++
Executable File
95 lines
3.5 KiB
C++
Executable File
/**********
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This library is free software; you can redistribute it and/or modify it under
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the terms of the GNU Lesser General Public License as published by the
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Free Software Foundation; either version 2.1 of the License, or (at your
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option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.)
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This library is distributed in the hope that it will be useful, but WITHOUT
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ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
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FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for
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more details.
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You should have received a copy of the GNU Lesser General Public License
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along with this library; if not, write to the Free Software Foundation, Inc.,
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51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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**********/
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// "liveMedia"
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// Copyright (c) 1996-2016 Live Networks, Inc. All rights reserved.
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// A simple RTP sink that packs frames into each outgoing
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// packet, without any fragmentation or special headers.
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// Implementation
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#include "SimpleRTPSink.hh"
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SimpleRTPSink::SimpleRTPSink(UsageEnvironment& env, Groupsock* RTPgs,
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unsigned char rtpPayloadFormat,
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unsigned rtpTimestampFrequency,
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char const* sdpMediaTypeString,
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char const* rtpPayloadFormatName,
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unsigned numChannels,
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Boolean allowMultipleFramesPerPacket,
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Boolean doNormalMBitRule)
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: MultiFramedRTPSink(env, RTPgs, rtpPayloadFormat,
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rtpTimestampFrequency, rtpPayloadFormatName,
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numChannels),
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fAllowMultipleFramesPerPacket(allowMultipleFramesPerPacket), fSetMBitOnNextPacket(False) {
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fSDPMediaTypeString
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= strDup(sdpMediaTypeString == NULL ? "unknown" : sdpMediaTypeString);
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fSetMBitOnLastFrames = doNormalMBitRule && strcmp(fSDPMediaTypeString, "audio") != 0;
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}
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SimpleRTPSink::~SimpleRTPSink() {
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delete[] (char*)fSDPMediaTypeString;
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}
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SimpleRTPSink*
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SimpleRTPSink::createNew(UsageEnvironment& env, Groupsock* RTPgs,
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unsigned char rtpPayloadFormat,
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unsigned rtpTimestampFrequency,
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char const* sdpMediaTypeString,
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char const* rtpPayloadFormatName,
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unsigned numChannels,
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Boolean allowMultipleFramesPerPacket,
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Boolean doNormalMBitRule) {
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return new SimpleRTPSink(env, RTPgs,
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rtpPayloadFormat, rtpTimestampFrequency,
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sdpMediaTypeString, rtpPayloadFormatName,
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numChannels,
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allowMultipleFramesPerPacket,
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doNormalMBitRule);
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}
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void SimpleRTPSink::doSpecialFrameHandling(unsigned fragmentationOffset,
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unsigned char* frameStart,
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unsigned numBytesInFrame,
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struct timeval framePresentationTime,
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unsigned numRemainingBytes) {
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if (numRemainingBytes == 0) {
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// This packet contains the last (or only) fragment of the frame.
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// Set the RTP 'M' ('marker') bit, if appropriate:
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if (fSetMBitOnLastFrames) setMarkerBit();
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}
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if (fSetMBitOnNextPacket) {
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// An external object has asked for the 'M' bit to be set on the next packet:
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setMarkerBit();
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fSetMBitOnNextPacket = False;
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}
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// Important: Also call our base class's doSpecialFrameHandling(),
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// to set the packet's timestamp:
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MultiFramedRTPSink::doSpecialFrameHandling(fragmentationOffset,
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frameStart, numBytesInFrame,
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framePresentationTime,
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numRemainingBytes);
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}
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Boolean SimpleRTPSink::
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frameCanAppearAfterPacketStart(unsigned char const* /*frameStart*/,
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unsigned /*numBytesInFrame*/) const {
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return fAllowMultipleFramesPerPacket;
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}
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char const* SimpleRTPSink::sdpMediaType() const {
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return fSDPMediaTypeString;
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}
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