1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
|
/**********
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
**********/
// Copyright (c) 1996-2007, Live Networks, Inc. All rights reserved
// A program that reads an existing MPEG-2 Transport Stream file,
// and generates a separate index file that can be used - by our RTSP server
// implementation - to support 'trick play' operations when streaming the
// Transport Stream file.
// main program
#include <liveMedia.hh>
#include <BasicUsageEnvironment.hh>
void afterPlaying(void* clientData); // forward
UsageEnvironment* env;
char const* programName;
void usage() {
*env << "usage: " << programName << " <transport-stream-file-name>\n";
*env << "\twhere <transport-stream-file-name> ends with \".ts\"\n";
exit(1);
}
int main(int argc, char const** argv) {
// Begin by setting up our usage environment:
TaskScheduler* scheduler = BasicTaskScheduler::createNew();
env = BasicUsageEnvironment::createNew(*scheduler);
// Parse the command line:
programName = argv[0];
if (argc != 2) usage();
char const* inputFileName = argv[1];
// Check whether the input file name ends with ".ts":
int len = strlen(inputFileName);
if (len < 4 || strcmp(&inputFileName[len-3], ".ts") != 0) {
*env << "ERROR: input file name \"" << inputFileName
<< "\" does not end with \".ts\"\n";
usage();
}
// Open the input file (as a 'byte stream file source'):
FramedSource* input
= ByteStreamFileSource::createNew(*env, inputFileName, TRANSPORT_PACKET_SIZE);
if (input == NULL) {
*env << "Failed to open input file \"" << inputFileName << "\" (does it exist?)\n";
exit(1);
}
// Create a filter that indexes the input Transport Stream data:
FramedSource* indexer
= MPEG2IFrameIndexFromTransportStream::createNew(*env, input);
// The output file name is the same as the input file name, except with suffix ".tsx":
char* outputFileName = new char[len+2]; // allow for trailing x\0
sprintf(outputFileName, "%sx", inputFileName);
// Open the output file (for writing), as a 'file sink':
MediaSink* output = FileSink::createNew(*env, outputFileName);
if (output == NULL) {
*env << "Failed to open output file \"" << outputFileName << "\"\n";
exit(1);
}
// Start playing, to generate the output index file:
*env << "Writing index file \"" << outputFileName << "\"...";
output->startPlaying(*indexer, afterPlaying, NULL);
env->taskScheduler().doEventLoop(); // does not return
return 0; // only to prevent compiler warning
}
void afterPlaying(void* /*clientData*/) {
*env << "...done\n";
exit(0);
}
|
