1/**********
2This library is free software; you can redistribute it and/or modify it under
3the terms of the GNU Lesser General Public License as published by the
4Free Software Foundation; either version 3 of the License, or (at your
5option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.)
6
7This library is distributed in the hope that it will be useful, but WITHOUT
8ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
9FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for
10more details.
11
12You should have received a copy of the GNU Lesser General Public License
13along with this library; if not, write to the Free Software Foundation, Inc.,
1451 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
15**********/
16// "liveMedia"
17// Copyright (c) 1996-2020 Live Networks, Inc. All rights reserved.
18// A 'ServerMediaSubsession' object that creates new, unicast, "RTPSink"s
19// on demand, from a track within a Matroska file.
20// Implementation
21
22#include "MatroskaFileServerMediaSubsession.hh"
23#include "MatroskaDemuxedTrack.hh"
24#include "FramedFilter.hh"
25
26MatroskaFileServerMediaSubsession* MatroskaFileServerMediaSubsession
27::createNew(MatroskaFileServerDemux& demux, MatroskaTrack* track) {
28 return new MatroskaFileServerMediaSubsession(demux, track);
29}
30
31MatroskaFileServerMediaSubsession
32::MatroskaFileServerMediaSubsession(MatroskaFileServerDemux& demux, MatroskaTrack* track)
33 : FileServerMediaSubsession(demux.envir(), demux.fileName(), False),
34 fOurDemux(demux), fTrack(track), fNumFiltersInFrontOfTrack(0) {
35}
36
37MatroskaFileServerMediaSubsession::~MatroskaFileServerMediaSubsession() {
38}
39
40float MatroskaFileServerMediaSubsession::duration() const { return fOurDemux.fileDuration(); }
41
42void MatroskaFileServerMediaSubsession
43::seekStreamSource(FramedSource* inputSource, double& seekNPT, double /*streamDuration*/, u_int64_t& /*numBytes*/) {
44 for (unsigned i = 0; i < fNumFiltersInFrontOfTrack; ++i) {
45 // "inputSource" is a filter. Go back to *its* source:
46 inputSource = ((FramedFilter*)inputSource)->inputSource();
47 }
48 ((MatroskaDemuxedTrack*)inputSource)->seekToTime(seekNPT);
49}
50
51FramedSource* MatroskaFileServerMediaSubsession
52::createNewStreamSource(unsigned clientSessionId, unsigned& estBitrate) {
53 FramedSource* baseSource = fOurDemux.newDemuxedTrack(clientSessionId, fTrack->trackNumber);
54 if (baseSource == NULL) return NULL;
55
56 return fOurDemux.ourMatroskaFile()
57 ->createSourceForStreaming(baseSource, fTrack->trackNumber,
58 estBitrate, fNumFiltersInFrontOfTrack);
59}
60
61RTPSink* MatroskaFileServerMediaSubsession
62::createNewRTPSink(Groupsock* rtpGroupsock, unsigned char rtpPayloadTypeIfDynamic, FramedSource* /*inputSource*/) {
63 return fOurDemux.ourMatroskaFile()
64 ->createRTPSinkForTrackNumber(fTrack->trackNumber, rtpGroupsock, rtpPayloadTypeIfDynamic);
65}
66