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/**********
This library is free software; you can redistribute it and/or modify it under
the terms of the GNU Lesser General Public License as published by the
Free Software Foundation; either version 2.1 of the License, or (at your
option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.)
This library is distributed in the hope that it will be useful, but WITHOUT
ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for
more details.
You should have received a copy of the GNU Lesser General Public License
along with this library; if not, write to the Free Software Foundation, Inc.,
59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
**********/
// "liveMedia"
// Copyright (c) 1996-2004 Live Networks, Inc. All rights reserved.
// A 'ServerMediaSubsession' object that creates new, unicast, "RTPSink"s
// on demand, from a MPEG-2 Transport Stream file.
// Implementation
#include "MPEG2TransportFileServerMediaSubsession.hh"
#include "SimpleRTPSink.hh"
#include "ByteStreamFileSource.hh"
#include "MPEG2TransportStreamFramer.hh"
MPEG2TransportFileServerMediaSubsession*
MPEG2TransportFileServerMediaSubsession::createNew(UsageEnvironment& env,
char const* fileName,
Boolean reuseFirstSource) {
return new MPEG2TransportFileServerMediaSubsession(env, fileName, reuseFirstSource);
}
MPEG2TransportFileServerMediaSubsession
::MPEG2TransportFileServerMediaSubsession(UsageEnvironment& env,
char const* fileName, Boolean reuseFirstSource)
: FileServerMediaSubsession(env, fileName, reuseFirstSource) {
}
MPEG2TransportFileServerMediaSubsession
::~MPEG2TransportFileServerMediaSubsession() {
}
#define TRANSPORT_PACKET_SIZE 188
#define TRANSPORT_PACKETS_PER_NETWORK_PACKET 7
// The product of these two numbers must be enough to fit within a network packet
FramedSource* MPEG2TransportFileServerMediaSubsession
::createNewStreamSource(unsigned /*clientSessionId*/, unsigned& estBitrate) {
estBitrate = 5000; // kbps, estimate
// Create the video source:
unsigned const inputDataChunkSize
= TRANSPORT_PACKETS_PER_NETWORK_PACKET*TRANSPORT_PACKET_SIZE;
ByteStreamFileSource* fileSource
= ByteStreamFileSource::createNew(envir(), fFileName, inputDataChunkSize);
if (fileSource == NULL) return NULL;
fFileSize = fileSource->fileSize();
// Create a framer for the Transport Stream:
return MPEG2TransportStreamFramer::createNew(envir(), fileSource);
}
RTPSink* MPEG2TransportFileServerMediaSubsession
::createNewRTPSink(Groupsock* rtpGroupsock,
unsigned char /*rtpPayloadTypeIfDynamic*/,
FramedSource* /*inputSource*/) {
return SimpleRTPSink::createNew(envir(), rtpGroupsock,
33, 90000, "video", "mp2t",
1, True, False /*no 'M' bit*/);
}
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