vdr/libsi/descriptor.c

/***************************************************************************
 *       Copyright (c) 2003 by Marcel Wiesweg                              *
 *                                                                         *
 *   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.                                   *
 *                                                                         *
 *   $Id: descriptor.c 1.3 2004/01/12 16:17:20 kls Exp $
 *                                                                         *
 ***************************************************************************/

#include <string.h>
#include "descriptor.h"

namespace SI {

void ShortEventDescriptor::Parse() {
   unsigned int offset=0;
   const descr_short_event *s;
   data.setPointerAndOffset<const descr_short_event>(s, offset);
   languageCode[0]=s->lang_code1;
   languageCode[1]=s->lang_code2;
   languageCode[2]=s->lang_code3;
   name.setDataAndOffset(data+offset, s->event_name_length, offset);
   const descr_short_event_mid *mid;
   data.setPointerAndOffset<const descr_short_event_mid>(mid, offset);
   text.setData(data+offset, mid->text_length);
}

int ExtendedEventDescriptor::getDescriptorNumber() {
   return s->descriptor_number;
}

int ExtendedEventDescriptor::getLastDescriptorNumber() {
   return s->last_descriptor_number;
}

void ExtendedEventDescriptor::Parse() {
   unsigned int offset=0;
   data.setPointerAndOffset<const descr_extended_event>(s, offset);
   languageCode[0]=s->lang_code1;
   languageCode[1]=s->lang_code2;
   languageCode[2]=s->lang_code3;
   itemLoop.setDataAndOffset(data+offset, s->length_of_items, offset);
   const descr_extended_event_mid *mid;
   data.setPointerAndOffset<const descr_extended_event_mid>(mid, offset);
   text.setData(data+offset, mid->text_length);
}

void ExtendedEventDescriptor::Item::Parse() {
   unsigned int offset=0;
   const item_extended_event *first;
   data.setPointerAndOffset<const item_extended_event>(first, offset);
   itemDescription.setDataAndOffset(data+offset, first->item_description_length, offset);
   const item_extended_event_mid *mid;
   data.setPointerAndOffset<const item_extended_event_mid>(mid, offset);
   item.setData(data+offset, mid->item_length);
}

int ExtendedEventDescriptors::getTextLength() {
   int ret=0;
   for (int i=0;i<length;i++) {
      ExtendedEventDescriptor *d=(ExtendedEventDescriptor *)array[i];
      if (!d)
         continue;
      ret+=d->text.getLength()+1; //plus a blank
      ExtendedEventDescriptor::Item item;
      for (Loop::Iterator it; d->itemLoop.hasNext(it);   ) {
         item=d->itemLoop.getNext(it);
         ret+=item.item.getLength();
         ret+=item.itemDescription.getLength();
         ret+=2; //the blanks
      }
   }
   return ret;
}

//is there a case where this function does not return the same as getTextLength?
int ExtendedEventDescriptors::getMaximumTextLength() {
   int ret=0;
   for (int i=0;i<length;i++) {
      ExtendedEventDescriptor *d=(ExtendedEventDescriptor *)array[i];
      if (!d)
         continue;
      ret+=d->text.getLength()+1; //plus a blank
      ret+=d->itemLoop.getLength();
   }
   return ret;
}

char *ExtendedEventDescriptors::getText() {
   char *text=new char[getMaximumTextLength()];
   return getText(text);
}

//appends the Strings of every Descriptor in the group
char *ExtendedEventDescriptors::getText(char *buffer) {
   int index=0, len;
   char tempbuf[256];
   for (int i=0;i<length;i++) {
      ExtendedEventDescriptor *d=(ExtendedEventDescriptor *)array[i];
      if (!d)
         continue;
      d->text.getText(tempbuf);
      len=strlen(tempbuf);
      if (len) {
         memcpy(buffer+index, tempbuf, len);
         index+=len;
      }

      ExtendedEventDescriptor::Item item;
      for (Loop::Iterator it; d->itemLoop.hasNext(it);   ) {
         item=d->itemLoop.getNext(it);

         item.item.getText(tempbuf);
         len=strlen(tempbuf);
         if (len) {
            memcpy(buffer+index, tempbuf, len);
            index+=len;
         }

         item.itemDescription.getText(tempbuf);
         len=strlen(tempbuf);
         if (len) {
            memcpy(buffer+index, tempbuf, len);
            index+=len;
         }
      }
   }
   buffer[index]='\0';
   return buffer;
}

int TimeShiftedEventDescriptor::getReferenceServiceId() const {
   return HILO(s->reference_service_id);
}

int TimeShiftedEventDescriptor::getReferenceEventId() const {
   return HILO(s->reference_event_id);
}

void TimeShiftedEventDescriptor::Parse() {
   s=data.getData<const descr_time_shifted_event>();
}

void ContentDescriptor::Parse() {
   //this descriptor is only a header and a loop
   nibbleLoop.setData(data+sizeof(SectionHeader), getLength()-sizeof(SectionHeader));
}

int ContentDescriptor::Nibble::getContentNibbleLevel1() const {
   return s->content_nibble_level_1;
}

int ContentDescriptor::Nibble::getContentNibbleLevel2() const {
   return s->content_nibble_level_2;
}

int ContentDescriptor::Nibble::getUserNibble1() const {
   return s->user_nibble_1;
}

int ContentDescriptor::Nibble::getUserNibble2() const {
   return s->user_nibble_2;
}

void ContentDescriptor::Nibble::Parse() {
   s=data.getData<const nibble_content>();
}

void ParentalRatingDescriptor::Parse() {
   //this descriptor is only a header and a loop
   ratingLoop.setData(data+sizeof(SectionHeader), getLength()-sizeof(SectionHeader));
}

int ParentalRatingDescriptor::Rating::getRating() const {
   return s->rating;
}

void ParentalRatingDescriptor::Rating::Parse() {
   s=data.getData<const parental_rating>();
   languageCode[0]=s->lang_code1;
   languageCode[1]=s->lang_code2;
   languageCode[2]=s->lang_code3;
}

int CaDescriptor::getCaType() const {
   return HILO(s->CA_type);
}

int CaDescriptor::getCaPid() const {
   return HILO(s->CA_PID);
}

void CaDescriptor::Parse() {
   unsigned int offset=0;
   data.setPointerAndOffset<const descr_ca>(s, offset);
   privateData.assign(data.getData(offset), getLength()-offset);
}

int StreamIdentifierDescriptor::getComponentTag() const {
   return s->component_tag;
}

void StreamIdentifierDescriptor::Parse() {
   s=data.getData<const descr_stream_identifier>();
}

void NetworkNameDescriptor::Parse() {
   name.setData(data+sizeof(descr_network_name), getLength()-sizeof(descr_network_name));
}

void CaIdentifierDescriptor::Parse() {
   identifiers.setData(data+sizeof(descr_ca_identifier), getLength()-sizeof(descr_ca_identifier));
}

int CarouselIdentifierDescriptor::getCarouselId() const {
   return (HILO(s->carousel_id_hi) << 16) | HILO(s->carousel_id_lo);
}

int CarouselIdentifierDescriptor::getFormatId() const {
   return s->FormatId;
}

void CarouselIdentifierDescriptor::Parse() {
   s=data.getData<const descr_carousel_identifier>();
}

void ServiceListDescriptor::Parse() {
   serviceLoop.setData(data+sizeof(descr_service_list), getLength()-sizeof(descr_service_list));
}

int ServiceListDescriptor::Service::getServiceId() const {
   return HILO(s->service_id);
}

int ServiceListDescriptor::Service::getServiceType() const {
   return s->service_type;
}

void ServiceListDescriptor::Service::Parse() {
   s=data.getData<const descr_service_list_loop>();
}

int SatelliteDeliverySystemDescriptor::getFrequency() const {
   return (HILO(s->frequency_hi) << 16) | HILO(s->frequency_lo);
}

int SatelliteDeliverySystemDescriptor::getOrbitalPosition() const {
   return HILO(s->orbital_position);
}

int SatelliteDeliverySystemDescriptor::getWestEastFlag() const {
   return s->west_east_flag;
}

int SatelliteDeliverySystemDescriptor::getPolarization() const {
   return s->polarization;
}

int SatelliteDeliverySystemDescriptor::getModulation() const {
   return s->modulation;
}

int SatelliteDeliverySystemDescriptor::getSymbolRate() const {
   return (HILO(s->symbol_rate_hi) << 12) | (s->symbol_rate_lo_1 << 4) | s->symbol_rate_lo_2;
}

int SatelliteDeliverySystemDescriptor::getFecInner() const {
   return s->fec_inner;
}

void SatelliteDeliverySystemDescriptor::Parse() {
   s=data.getData<const descr_satellite_delivery_system>();
}

int CableDeliverySystemDescriptor::getFrequency() const {
   return (HILO(s->frequency_hi) << 16) | HILO(s->frequency_lo);
}

int CableDeliverySystemDescriptor::getFecOuter() const {
   return s->fec_outer;
}

int CableDeliverySystemDescriptor::getModulation() const {
   return s->modulation;
}

int CableDeliverySystemDescriptor::getSymbolRate() const {
   return (HILO(s->symbol_rate_hi) << 12) | (s->symbol_rate_lo_1 << 4) | s->symbol_rate_lo_2;
}

int CableDeliverySystemDescriptor::getFecInner() const {
   return s->fec_inner;
}

void CableDeliverySystemDescriptor::Parse() {
   s=data.getData<const descr_cable_delivery_system>();
}

int TerrestrialDeliverySystemDescriptor::getFrequency() const {
   return (HILO(s->frequency_hi) << 16) | HILO(s->frequency_lo);
}

int TerrestrialDeliverySystemDescriptor::getBandwidth() const {
   return s->bandwidth;
}

int TerrestrialDeliverySystemDescriptor::getConstellation() const {
   return s->constellation;
}

int TerrestrialDeliverySystemDescriptor::getHierarchy() const {
   return s->hierarchy;
}

int TerrestrialDeliverySystemDescriptor::getCodeRateHP() const {
   return s->code_rate_HP;
}

int TerrestrialDeliverySystemDescriptor::getCodeRateLP() const {
   return s->code_rate_LP;
}

int TerrestrialDeliverySystemDescriptor::getGuardInterval() const {
   return s->guard_interval;
}

int TerrestrialDeliverySystemDescriptor::getTransmissionMode() const {
   return s->transmission_mode;
}

bool TerrestrialDeliverySystemDescriptor::getOtherFrequency() const {
   return s->other_frequency_flag;
}

void TerrestrialDeliverySystemDescriptor::Parse() {
   s=data.getData<const descr_terrestrial_delivery>();
}

int ServiceDescriptor::getServiceType() const {
   return s->service_type;
}

void ServiceDescriptor::Parse() {
   unsigned int offset=0;
   data.setPointerAndOffset<const descr_service>(s, offset);
   providerName.setDataAndOffset(data+offset, s->provider_name_length, offset);
   const descr_service_mid *mid;
   data.setPointerAndOffset<const descr_service_mid>(mid, offset);
   serviceName.setData(data+offset, mid->service_name_length);
}

void NVODReferenceDescriptor::Parse() {
   serviceLoop.setData(data+sizeof(descr_nvod_reference), getLength()-sizeof(descr_nvod_reference));
}

int NVODReferenceDescriptor::Service::getTransportStream() const {
   return HILO(s->transport_stream_id);
}

int NVODReferenceDescriptor::Service::getOriginalNetworkId() const {
   return HILO(s->original_network_id);
}

int NVODReferenceDescriptor::Service::getServiceId() const {
   return HILO(s->service_id);
}

void NVODReferenceDescriptor::Service::Parse() {
   s=data.getData<const item_nvod_reference>();
}

int TimeShiftedServiceDescriptor::getReferenceServiceId() const {
   return HILO(s->reference_service_id);
}

void TimeShiftedServiceDescriptor::Parse() {
   s=data.getData<const descr_time_shifted_service>();
}

int ComponentDescriptor::getStreamContent() const {
   return s->stream_content;
}

int ComponentDescriptor::getComponentType() const {
   return s->component_type;
}

int ComponentDescriptor::getComponentTag() const {
   return s->component_tag;
}

void ComponentDescriptor::Parse() {
   unsigned int offset=0;
   data.setPointerAndOffset<const descr_component>(s, offset);
   languageCode[0]=s->lang_code1;
   languageCode[1]=s->lang_code2;
   languageCode[2]=s->lang_code3;
   description.setData(data+offset, getLength()-offset);
}

void SubtitlingDescriptor::Parse() {
   subtitlingLoop.setData(data+sizeof(descr_subtitling), getLength()-sizeof(descr_subtitling));
}

int SubtitlingDescriptor::Subtitling::getSubtitlingType() const {
   return s->subtitling_type;
}

int SubtitlingDescriptor::Subtitling::getCompositionPageId() const {
   return HILO(s->composition_page_id);
}

int SubtitlingDescriptor::Subtitling::getAncillaryPageId() const {
   return HILO(s->ancillary_page_id);
}

void SubtitlingDescriptor::Subtitling::Parse() {
   s=data.getData<const item_subtitling>();
}

int ServiceMoveDescriptor::getNewOriginalNetworkId() const {
   return HILO(s->new_original_network_id);
}

int ServiceMoveDescriptor::getNewTransportStreamId() const {
   return HILO(s->new_transport_stream_id);
}

int ServiceMoveDescriptor::getNewServiceId() const {
   return HILO(s->new_service_id);
}

void ServiceMoveDescriptor::Parse() {
   s=data.getData<const descr_service_move>();
}

int FrequencyListDescriptor::getCodingType() const {
   return s->coding_type;
}

void FrequencyListDescriptor::Parse() {
   unsigned int offset=0;
   data.setPointerAndOffset<const descr_frequency_list>(s, offset);
   frequencies.setData(data+offset, getLength()-offset);
}

void ServiceIdentifierDescriptor::Parse() {
   textualServiceIdentifier.setData(data+sizeof(descr_service_identifier), getLength()-sizeof(descr_service_identifier));
}

void MultilingualNameDescriptor::Parse() {
   nameLoop.setData(data+sizeof(descr_multilingual_network_name), getLength()-sizeof(descr_multilingual_network_name));
}

void MultilingualNameDescriptor::Name::Parse() {
   unsigned int offset=0;
   const entry_multilingual_name *s;
   data.setPointerAndOffset<const entry_multilingual_name>(s, offset);
   languageCode[0]=s->lang_code1;
   languageCode[1]=s->lang_code2;
   languageCode[2]=s->lang_code3;
   name.setData(data+offset, s->text_length);
}

int MultilingualComponentDescriptor::getComponentTag() const {
   return s->component_tag;
}

void MultilingualComponentDescriptor::Parse() {
   unsigned int offset=0;
   data.setPointerAndOffset<const descr_multilingual_component>(s, offset);
   nameLoop.setData(data+sizeof(descr_multilingual_component), getLength()-sizeof(descr_multilingual_component));
}

void MultilingualServiceNameDescriptor::Parse() {
   nameLoop.setData(data+sizeof(descr_multilingual_network_name), getLength()-sizeof(descr_multilingual_network_name));
}

void MultilingualServiceNameDescriptor::Name::Parse() {
   unsigned int offset=0;
   const entry_multilingual_name *s;
   data.setPointerAndOffset<const entry_multilingual_name>(s, offset);
   languageCode[0]=s->lang_code1;
   languageCode[1]=s->lang_code2;
   languageCode[2]=s->lang_code3;
   providerName.setDataAndOffset(data+offset, s->text_length, offset);
   const entry_multilingual_service_name_mid *mid;
   data.setPointerAndOffset<const entry_multilingual_service_name_mid>(mid, offset);
   name.setData(data+offset, mid->service_name_length);
}

void LinkageDescriptor::Parse() {
   unsigned int offset=0;
   data.setPointerAndOffset<const descr_linkage>(s, offset);
   privateData.assign(data.getData(offset), getLength()-offset);
}

int LinkageDescriptor::getTransportStreamId() const {
   return HILO(s->transport_stream_id);
}

int LinkageDescriptor::getOriginalNetworkId() const {
   return HILO(s->original_network_id);
}

int LinkageDescriptor::getServiceId() const {
   return HILO(s->service_id);
}

LinkageType LinkageDescriptor::getLinkageType() const {
   return (LinkageType)s->linkage_type;
}

void ApplicationSignallingDescriptor::Parse() {
   entryLoop.setData(data+sizeof(descr_application_signalling), getLength()-sizeof(descr_application_signalling));
}

int ApplicationSignallingDescriptor::ApplicationEntryDescriptor::getApplicationType() const {
   return HILO(s->application_type);
}

int ApplicationSignallingDescriptor::ApplicationEntryDescriptor::getAITVersionNumber() const {
   return s->AIT_version_number;
}

void ApplicationSignallingDescriptor::ApplicationEntryDescriptor::Parse() {
   s=data.getData<const application_signalling_entry>();
}

bool MHP_ApplicationDescriptor::isServiceBound() const {
   return s->service_bound_flag;
}

int MHP_ApplicationDescriptor::getVisibility() const {
   return s->visibility;
}

int MHP_ApplicationDescriptor::getApplicationPriority() const {
   return s->application_priority;
}

void MHP_ApplicationDescriptor::Parse() {
   unsigned int offset=0;
   const descr_application *dapp;
   data.setPointerAndOffset<const descr_application>(dapp, offset);
   profileLoop.setDataAndOffset(data+offset, dapp->application_profiles_length, offset);
   data.setPointerAndOffset<const descr_application_end>(s, offset);
   transportProtocolLabels.setData(data+offset, getLength()-offset);
}

int MHP_ApplicationDescriptor::Profile::getApplicationProfile() const {
      return HILO(s->application_profile);
}

int MHP_ApplicationDescriptor::Profile::getVersionMajor() const {
      return s->version_major;
}

int MHP_ApplicationDescriptor::Profile::getVersionMinor() const {
      return s->version_minor;
}

int MHP_ApplicationDescriptor::Profile::getVersionMicro() const {
      return s->version_micro;
}

void MHP_ApplicationDescriptor::Profile::Parse() {
   s=data.getData<application_profile_entry>();
}

void MHP_ApplicationNameDescriptor::Parse() {
   nameLoop.setData(data+sizeof(descr_application_name), getLength()-sizeof(descr_application_name));
}

void MHP_ApplicationNameDescriptor::NameEntry::Parse() {
   const descr_application_name_entry *s;
   s=data.getData<const descr_application_name_entry>();
   name.setData(data+sizeof(descr_application_name_entry), s->application_name_length);
   languageCode[0]=s->lang_code1;
   languageCode[1]=s->lang_code2;
   languageCode[2]=s->lang_code3;
}

int MHP_TransportProtocolDescriptor::getProtocolId() const {
   return HILO(s->protocol_id);
}

int MHP_TransportProtocolDescriptor::getProtocolLabel() const {
   return s->transport_protocol_label;
}

bool MHP_TransportProtocolDescriptor::isRemote() const {
   return remote;
}

int MHP_TransportProtocolDescriptor::getComponentTag() const {
   return componentTag;
}

void MHP_TransportProtocolDescriptor::Parse() {
   unsigned int offset=0;
   data.setPointerAndOffset<const descr_transport_protocol>(s, offset);
   if (getProtocolId() == ObjectCarousel) {
      const transport_via_oc *oc;
      data.setPointerAndOffset<const transport_via_oc>(oc, offset);
      remote=oc->remote;
      if (remote) {
         const transport_via_oc_remote_end *rem;
         data.setPointerAndOffset<const transport_via_oc_remote_end>(rem, offset);
         componentTag=rem->component_tag;
      } else {
         const transport_via_oc_end *rem;
         data.setPointerAndOffset<const transport_via_oc_end>(rem, offset);
         componentTag=rem->component_tag;
      }
   } else { //unimplemented
      remote=false;
      componentTag=-1;
   }
}

void MHP_DVBJApplicationDescriptor::Parse() {
   applicationLoop.setData(data+sizeof(descr_dvbj_application), getLength()-sizeof(descr_dvbj_application));
}

void MHP_DVBJApplicationDescriptor::ApplicationEntry::Parse() {
   const descr_dvbj_application_entry *entry=data.getData<const descr_dvbj_application_entry>();
   parameter.setData(data+sizeof(descr_dvbj_application_entry), entry->parameter_length);
}

void MHP_DVBJApplicationLocationDescriptor::Parse() {
   unsigned int offset=0;
   const descr_dvbj_application_location *first;
   data.setPointerAndOffset<const descr_dvbj_application_location>(first, offset);
   baseDirectory.setDataAndOffset(data+offset, first->base_directory_length, offset);
   const descr_dvbj_application_location_mid *mid;
   data.setPointerAndOffset<const descr_dvbj_application_location_mid>(mid, offset);
   classPath.setDataAndOffset(data+offset, mid->classpath_extension_length, offset);
   initialClass.setData(data+offset, getLength()-offset);
}

int MHP_ApplicationIconsDescriptor::getIconFlags() const {
   return HILO(s->icon_flags);
}

void MHP_ApplicationIconsDescriptor::Parse() {
   unsigned int offset=0;
   const descr_application_icons_descriptor *first;
   data.setPointerAndOffset<const descr_application_icons_descriptor>(first, offset);
   iconLocator.setDataAndOffset(data+offset, first->icon_locator_length, offset);
   data.setPointerAndOffset<const descr_application_icons_descriptor_end>(s, offset);
}

} //end of namespace