68 lines
2.2 KiB
C++
Executable File
68 lines
2.2 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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// H.261 Video RTP Sources
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// Implementation
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#include "H261VideoRTPSource.hh"
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H261VideoRTPSource*
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H261VideoRTPSource::createNew(UsageEnvironment& env, Groupsock* RTPgs,
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unsigned char rtpPayloadFormat,
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unsigned rtpTimestampFrequency) {
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return new H261VideoRTPSource(env, RTPgs, rtpPayloadFormat,
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rtpTimestampFrequency);
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}
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H261VideoRTPSource
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::H261VideoRTPSource(UsageEnvironment& env, Groupsock* RTPgs,
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unsigned char rtpPayloadFormat,
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unsigned rtpTimestampFrequency)
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: MultiFramedRTPSource(env, RTPgs,
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rtpPayloadFormat, rtpTimestampFrequency),
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fLastSpecialHeader(0) {
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}
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H261VideoRTPSource::~H261VideoRTPSource() {
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}
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Boolean H261VideoRTPSource
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::processSpecialHeader(BufferedPacket* packet,
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unsigned& resultSpecialHeaderSize) {
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// There's a 4-byte video-specific header
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if (packet->dataSize() < 4) return False;
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unsigned char* headerStart = packet->data();
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fLastSpecialHeader
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= (headerStart[0]<<24)|(headerStart[1]<<16)|(headerStart[2]<<8)|headerStart[3];
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#ifdef DELIVER_COMPLETE_FRAMES
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fCurrentPacketBeginsFrame = fCurrentPacketCompletesFrame;
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// whether the *previous* packet ended a frame
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// The RTP "M" (marker) bit indicates the last fragment of a frame:
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fCurrentPacketCompletesFrame = packet->rtpMarkerBit();
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#endif
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resultSpecialHeaderSize = 4;
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return True;
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}
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char const* H261VideoRTPSource::MIMEtype() const {
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return "video/H261";
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}
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