lib/dvb_si/announcement_support_descriptor.cpp

   1 /*
   2  * $Id: announcement_support_descriptor.cpp,v 1.1 2003-10-17 15:36:37 tmbinc Exp $
   3  *
   4  * (C) 2002-2003 Andreas Oberritter <obi@saftware.de>
   5  *
   6  * This program is free software; you can redistribute it and/or modify
   7  * it under the terms of the GNU General Public License as published by
   8  * the Free Software Foundation; either version 2 of the License, or
   9  * (at your option) any later version.
  10  *
  11  * This program is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14  * GNU General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU General Public License
  17  * along with this program; if not, write to the Free Software
  18  * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  19  *
  20  */
  21
  22 #include <lib/dvb_si/announcement_support_descriptor.h>
  23
  24 Announcement::Announcement(const uint8_t * const buffer)
  25 {
  26         announcementType = (buffer[0] >> 4) & 0x0f;
  27         reserved = (buffer[0] >> 3) & 0x01;
  28         referenceType = buffer[0] & 0x07;
  29
  30         if ((referenceType >= 0x01) && (referenceType <= 0x03)) {
  31                 originalNetworkId = (buffer[1] << 8) | buffer[2];
  32                 transportStreamId = (buffer[3] << 8) | buffer[4];
  33                 serviceId = (buffer[5] << 8) | buffer[6];
  34                 componentTag = buffer[7];
  35         }
  36 }
  37
  38 uint8_t Announcement::getAnnouncementType(void) const
  39 {
  40         return announcementType;
  41 }
  42
  43 uint8_t Announcement::getReferenceType(void) const
  44 {
  45         return referenceType;
  46 }
  47
  48 uint16_t Announcement::getOriginalNetworkId(void) const
  49 {
  50         return originalNetworkId;
  51 }
  52
  53 uint16_t Announcement::getTransportStreamId(void) const
  54 {
  55         return transportStreamId;
  56 }
  57
  58 uint16_t Announcement::getServiceId(void) const
  59 {
  60         return serviceId;
  61 }
  62
  63 uint8_t Announcement::getComponentTag(void) const
  64 {
  65         return componentTag;
  66 }
  67
  68 AnnouncementSupportDescriptor::AnnouncementSupportDescriptor(const uint8_t * const buffer) : Descriptor(buffer)
  69 {
  70         Announcement *a;
  71
  72         announcementSupportIndicator = (buffer[2] << 8) | buffer[3];
  73
  74         if (descriptorLength < 2)
  75                 return;
  76
  77         for (uint16_t i = 0; i < descriptorLength - 2; ++i) {
  78                 a = new Announcement(&buffer[i + 4]);
  79                 announcements.push_back(a);
  80                 switch (a->getReferenceType()) {
  81                 case 0x01:
  82                 case 0x02:
  83                 case 0x03:
  84                         i += 7;
  85                         break;
  86                 default:
  87                         break;
  88                 }
  89         }
  90 }
  91
  92 AnnouncementSupportDescriptor::~AnnouncementSupportDescriptor(void)
  93 {
  94         for (AnnouncementIterator i = announcements.begin(); i != announcements.end(); ++i)
  95                 delete *i;
  96 }
  97
  98 uint16_t AnnouncementSupportDescriptor::getAnnouncementSupportIndicator(void) const
  99 {
 100         return announcementSupportIndicator;
 101 }
 102
 103 const AnnouncementVector *AnnouncementSupportDescriptor::getAnnouncements(void) const
 104 {
 105         return &announcements;
 106 }
 107