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|
/*****************************************************************
|
| AP4 - MP4 Rtp Hint Info
|
| Copyright 2002-2008 Axiomatic Systems, LLC
|
|
| This file is part of Bento4/AP4 (MP4 Atom Processing Library).
|
| Unless you have obtained Bento4 under a difference license,
| this version of Bento4 is Bento4|GPL.
| Bento4|GPL is free software; you can redistribute it and/or modify
| it under the terms of the GNU General Public License as published by
| the Free Software Foundation; either version 2, or (at your option)
| any later version.
|
| Bento4|GPL 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 General Public License for more details.
|
| You should have received a copy of the GNU General Public License
| along with Bento4|GPL; see the file COPYING. If not, write to the
| Free Software Foundation, 59 Temple Place - Suite 330, Boston, MA
| 02111-1307, USA.
|
****************************************************************/
/*----------------------------------------------------------------------
| includes
+---------------------------------------------------------------------*/
#include <stdio.h>
#include <stdlib.h>
#include "Ap4.h"
/*----------------------------------------------------------------------
| constants
+---------------------------------------------------------------------*/
#define BANNER "MP4 Rtp Hint Info - Version 1.0\n"\
"(Bento4 Version " AP4_VERSION_STRING ")\n"\
"(c) 2002-2008 Axiomatic Systems, LLC"
/*----------------------------------------------------------------------
| PrintUsageAndExit
+---------------------------------------------------------------------*/
static void
PrintUsageAndExit()
{
fprintf(stderr,
BANNER
"\n\nusage: mp4rtphintinfo [--trackid <hinttrackid>] <input>\n");
exit(1);
}
/*----------------------------------------------------------------------
| DumpRtpPackets
+---------------------------------------------------------------------*/
static AP4_Result
DumpRtpPackets(AP4_HintTrackReader& reader, const char* file_name)
{
// create the output stream
AP4_Result result;
AP4_ByteStream* output = NULL;
result = AP4_FileByteStream::Create(file_name, AP4_FileByteStream::STREAM_MODE_WRITE, output);
if (AP4_FAILED(result)) {
fprintf(stderr, "ERROR: cannot open output file (%s)\n", file_name);
return AP4_FAILURE;
}
// read the packets from the reader and write them in the output stream
AP4_DataBuffer data(1500);
AP4_UI32 ts_ms;
while(AP4_SUCCEEDED(reader.GetNextPacket(data, ts_ms))) {
output->Write(data.GetData(), data.GetDataSize());
AP4_Debug("#########\n\tpacket contains %d bytes\n", data.GetDataSize());
AP4_Debug("\tsent at time stamp %d\n\n", ts_ms);
}
output->Release();
return AP4_SUCCESS;
}
/*----------------------------------------------------------------------
| main
+---------------------------------------------------------------------*/
int
main(int argc, char** argv)
{
AP4_Result result = AP4_SUCCESS;
// parse the command line
if (argc != 4) PrintUsageAndExit();
// parse options
const char* input_filename = NULL;
AP4_UI32 hint_track_id = 0;
char* arg;
while ((arg = *++argv)) {
if (!strcmp(arg, "--trackid")) {
arg = *++argv;
if (arg == NULL) {
fprintf(stderr, "ERROR: missing argument after --trackid option\n");
PrintUsageAndExit();
}
hint_track_id = atoi(arg);
} else if (input_filename == NULL) {
input_filename = arg;
} else {
fprintf(stderr, "ERROR: unexpected argument (%s)\n", arg);
return 1;
}
}
// create the input stream
AP4_ByteStream* input = NULL;
result = AP4_FileByteStream::Create(input_filename, AP4_FileByteStream::STREAM_MODE_READ, input);
if (AP4_FAILED(result)) {
fprintf(stderr, "ERROR: cannot open input file (%s)\n", argv[1]);
PrintUsageAndExit();
}
AP4_File file(*input);
AP4_Movie* movie = file.GetMovie();
if (movie != NULL) {
// get a hint track reader
AP4_Track* hint_track = movie->GetTrack(hint_track_id);
if (hint_track == NULL) {
fprintf(stderr, "ERROR: No track for track id (%d)\n", hint_track_id);
return AP4_FAILURE;
}
if (hint_track->GetType() != AP4_Track::TYPE_HINT) {
fprintf(stderr, "track of id (%d) is not of type 'hint'\n", hint_track_id);
return AP4_FAILURE;
}
AP4_HintTrackReader* reader = NULL;
result = AP4_HintTrackReader::Create(*hint_track, *movie, 0x01020304, reader);
if (AP4_FAILED(result)) return result;
char rtp_file_name[256];
AP4_FormatString(rtp_file_name, 256, "%s-track-%d.rtp", input_filename, hint_track_id);
// display the sdp
AP4_String sdp;
reader->GetSdpText(sdp);
AP4_Debug("sdp:\n%s\n\n", sdp.GetChars());
// dump the packet
result = DumpRtpPackets(*reader, rtp_file_name);
delete reader;
} else {
AP4_Debug("No movie found in the file\n");
return AP4_FAILURE;
}
input->Release();
return result;
}
|
