/***************************************************************************** * decode_sdt.c: SDT decoder example *---------------------------------------------------------------------------- * (c)2001-2002 VideoLAN * $Id: decode_sdt.c 88 2004-02-24 14:31:18Z sam $ * * Authors: Arnaud de Bossoreille de Ribou <bozo@via.ecp.fr> *          Johan Bilien <jobi@via.ecp.fr> * * This program 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 * of the License, or (at your option) any later version. * * This program 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 this program; if not, write to the Free Software * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA. * *---------------------------------------------------------------------------- * *****************************************************************************/#include "config.h"#include <stdio.h>#include <stdlib.h>#include <unistd.h>#include <fcntl.h>#if defined(HAVE_INTTYPES_H)#include <inttypes.h>#elif defined(HAVE_STDINT_H)#include <stdint.h>#endif/* The libdvbpsi distribution defines DVBPSI_DIST */#ifdef DVBPSI_DIST#include "../src/dvbpsi.h"#include "../src/psi.h"#include "../src/demux.h"#include "../src/descriptor.h"#include "../src/tables/sdt.h"#else#include <dvbpsi/dvbpsi.h>#include <dvbpsi/psi.h>#include <dvbpsi/demux.h>#include <dvbpsi/descriptor.h>#include <dvbpsi/sdt.h>#endif/***************************************************************************** * ReadPacket *****************************************************************************/int ReadPacket(int i_fd, uint8_t* p_dst){  int i = 187;  int i_rc = 1;  p_dst[0] = 0;  while((p_dst[0] != 0x47) && (i_rc > 0))  {    i_rc = read(i_fd, p_dst, 1);  }  while((i != 0) && (i_rc > 0))  {    i_rc = read(i_fd, p_dst + 188 - i, i);    if(i_rc >= 0)      i -= i_rc;  }  return (i == 0) ? 1 : 0;}/***************************************************************************** * DumpDescriptors *****************************************************************************/void DumpDescriptors(const char* str, dvbpsi_descriptor_t* p_descriptor){  while(p_descriptor)  {    int i;    printf("%s 0x%02x : \"", str, p_descriptor->i_tag);    for(i = 0; i < p_descriptor->i_length; i++)      printf("%c", p_descriptor->p_data[i]);    printf("\"\n");    p_descriptor = p_descriptor->p_next;  }};/***************************************************************************** * DumpSDT *****************************************************************************/void DumpSDT(void* p_zero, dvbpsi_sdt_t* p_sdt){  dvbpsi_sdt_service_t* p_service = p_sdt->p_first_service;  printf(  "\n");  printf(  "New active SDT\n");  printf(  "  ts_id : %d\n",         p_sdt->i_ts_id);  printf(  "  version_number : %d\n",         p_sdt->i_version);  printf(  "  network_id        : %d\n",         p_sdt->i_network_id);  printf(  "    | service_id \n");  while(p_service)  {    printf("    | 0x%02x \n",           p_service->i_service_id);    DumpDescriptors("    |  ]", p_service->p_first_descriptor);    p_service = p_service->p_next;  }  dvbpsi_DeleteSDT(p_sdt);}/***************************************************************************** * NewSubtable *****************************************************************************/void NewSubtable(void * p_zero, dvbpsi_handle h_dvbpsi,                 uint8_t i_table_id, uint16_t i_extension){  if(i_table_id == 0x42)  {    dvbpsi_AttachSDT(h_dvbpsi, i_table_id, i_extension, DumpSDT, NULL);  }}/***************************************************************************** * main *****************************************************************************/int main(int i_argc, char* pa_argv[]){  int i_fd;  uint8_t data[188];  dvbpsi_handle h_dvbpsi;  int b_ok;  if(i_argc != 2)    return 1;  i_fd = open(pa_argv[1], 0);  h_dvbpsi = dvbpsi_AttachDemux(NewSubtable, NULL);  b_ok = ReadPacket(i_fd, data);  while(b_ok)  {    uint16_t i_pid = ((uint16_t)(data[1] & 0x1f) << 8) + data[2];    if(i_pid == 0x11)      dvbpsi_PushPacket(h_dvbpsi, data);    b_ok = ReadPacket(i_fd, data);  }  dvbpsi_DetachDemux(h_dvbpsi);  return 0;}