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86 lines
3.2 KiB
86 lines
3.2 KiB
/*****************************************************************************
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* rtp_check_seqnum.c: Prints RTP discontinuities
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*****************************************************************************
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* Copyright (C) 2011 VideoLAN
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* $Id: dvb_print_si.c 27 2011-04-10 16:57:59Z massiot $
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*
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* Authors: Christophe Massiot <massiot@via.ecp.fr>
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*
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* Permission is hereby granted, free of charge, to any person obtaining
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* a copy of this software and associated documentation files (the
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* "Software"), to deal in the Software without restriction, including
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* without limitation the rights to use, copy, modify, merge, publish,
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* distribute, sublicense, and/or sell copies of the Software, and to
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* permit persons to whom the Software is furnished to do so, subject
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* to the following conditions:
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*
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* The above copyright notice and this permission notice shall be
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* included in all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
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* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
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* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
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* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
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* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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*****************************************************************************/
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#include <stdio.h>
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#include <stdlib.h>
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#include <stdint.h>
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#include <stdbool.h>
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#include <unistd.h>
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#include <string.h>
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#include <bitstream/ietf/rtp.h>
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/*****************************************************************************
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* Local declarations
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*****************************************************************************/
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#define DEFAULT_PACKET_SIZE 1328
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/*****************************************************************************
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* Main loop
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*****************************************************************************/
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static void usage(const char *psz)
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{
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fprintf(stderr, "usage: multicat -u -m <packet size> @<addr>:<port> | %s [<packet size>]\n", psz);
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exit(EXIT_FAILURE);
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}
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int main(int i_argc, char **ppsz_argv)
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{
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int i_packet_size = DEFAULT_PACKET_SIZE;
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if (ppsz_argv[1] != NULL &&
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(!strcmp(ppsz_argv[1], "-h") || !strcmp(ppsz_argv[1], "--help")))
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usage(ppsz_argv[0]);
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if (ppsz_argv[1] != NULL)
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i_packet_size = atoi(ppsz_argv[1]);
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if (i_packet_size > 65535 || i_packet_size < RTP_HEADER_SIZE)
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usage(ppsz_argv[0]);
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uint8_t p_buffer[i_packet_size];
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uint16_t i_seqnum = 0;
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for ( ; ; ) {
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ssize_t toto;
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if ((toto=read(STDIN_FILENO, p_buffer, i_packet_size)) != i_packet_size) {
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fprintf(stderr, "couldn't read %zd\n", toto);
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exit(EXIT_FAILURE);
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}
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if (!rtp_check_hdr(p_buffer)) {
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fprintf(stderr, "invalid RTP header\n");
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continue;
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}
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uint16_t i_new_seqnum = rtp_get_seqnum(p_buffer);
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if (i_new_seqnum != i_seqnum)
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fprintf(stderr, "received packet %hu while expecting %hu\n",
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i_new_seqnum, i_seqnum);
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i_seqnum = (i_new_seqnum + 1) % 65536;
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}
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}
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