dvb_str.c

DVB MPEG2 system stream 分析, 包含 各個talbe(EIT,PMT,PAT,SDT),以及video,audio. 對於學習數字電視有很大幫助.

/*
$Id: dvb_str.c,v 1.49 2004/03/31 21:14:23 rasc Exp $


 DVBSNOOP

 a dvb sniffer  and mpeg2 stream analyzer tool
 http://dvbsnoop.sourceforge.net/

 (c) 2001-2004   [e-mail]


  -- DVB-Strings
  -- dvb decoder helper functions






$Log: dvb_str.c,v $
Revision 1.49  2004/03/31 21:14:23  rasc
New: Spider section pids  (snoop referenced section pids),
some minor changes

Revision 1.48  2004/03/21 00:37:47  rasc
Query FrontEnd Info  (option: -s feinfo)

Revision 1.47  2004/03/10 21:05:53  rasc
WSS (Wide Screen Signalling)  data decoding

Revision 1.46  2004/03/09 20:59:23  rasc
VPS decoding (someone check the NPP & PTY code output please...)

Revision 1.45  2004/02/15 18:58:31  rasc
DSM-CC  data/object carousell continued   (DSI, DII, DDB, DCancel)

Revision 1.44  2004/02/12 21:21:22  rasc
MHP AIT descriptors
some smaller changes

Revision 1.43  2004/02/09 22:57:01  rasc
Bugfix VBI Data descriptor

Revision 1.42  2004/02/09 21:25:01  rasc
AIT descriptors
minor redesign on output routines

Revision 1.41  2004/02/04 22:36:29  rasc
more EBU/teletext stuff

Revision 1.40  2004/02/02 23:34:11  rasc
- output indent changed to avoid \r  (which sucks on logged output)
- EBU PES data started (teletext, vps, wss, ...)
- bugfix: PES synch. data stream
- some other stuff

Revision 1.39  2004/01/25 21:37:28  rasc
bugfixes, minor changes & enhancments

Revision 1.38  2004/01/12 22:49:53  rasc
get rid of stream descriptor module

Revision 1.37  2004/01/11 22:49:41  rasc
PES restructured

Revision 1.36  2004/01/06 14:06:10  rasc
no message

Revision 1.35  2004/01/06 03:13:25  rasc
TS prints PES/Section ID on payload_start

Revision 1.34  2004/01/05 02:03:42  rasc
no message

Revision 1.33  2004/01/01 20:09:40  rasc
DSM-CC INT/UNT descriptors
PES-sync changed, TS sync changed,
descriptor scope
other changes

Revision 1.32  2003/12/30 14:05:38  rasc
just some annotations, so I do not forget these over Sylvester party...
(some alkohol may reformat parts of /devbrain/0 ... )
cheers!

Revision 1.31  2003/12/28 00:01:15  rasc
some minor changes/adds...

Revision 1.30  2003/12/27 18:17:18  rasc
dsmcc PES dsmcc_program_stream_descriptorlist

Revision 1.29  2003/12/27 00:21:17  rasc
dsmcc section tables

Revision 1.28  2003/11/26 19:55:34  rasc
no message

Revision 1.27  2003/11/25 00:17:11  rasc
-sync option, some TS and PES stuff;
dsm_addr inactive, may be wrong - due to missing ISO 13818-6

Revision 1.26  2003/11/24 23:52:18  rasc
-sync option, some TS and PES stuff;
dsm_addr inactive, may be wrong - due to missing ISO 13818-6

Revision 1.25  2003/11/24 14:16:07  obi
- corrected transport scrambling control bits according to ETSI ETR 289
- fixed lots of broken strings

Revision 1.24  2003/11/09 20:48:35  rasc
pes data packet (DSM-CC)

Revision 1.23  2003/11/07 16:33:32  rasc
no message

Revision 1.22  2003/11/01 21:40:28  rasc
some broadcast/linkage descriptor stuff

Revision 1.21  2003/10/29 20:54:57  rasc
more PES stuff, DSM descriptors, testdata

Revision 1.20  2003/10/27 22:43:50  rasc
carousel info descriptor and more

Revision 1.19  2003/10/26 23:00:43  rasc
fix

Revision 1.18  2003/10/25 19:11:50  rasc
no message

Revision 1.17  2003/10/21 19:54:43  rasc
no message

Revision 1.16  2003/10/19 22:22:57  rasc
- some datacarousell stuff started

Revision 1.15  2003/10/19 21:05:53  rasc
- some datacarousell stuff started

Revision 1.14  2003/10/19 13:54:25  rasc
-more table decoding

Revision 1.13  2003/10/17 19:04:11  rasc
- started more work on newer ISO 13818  descriptors
- some reorg/update work started

Revision 1.12  2003/10/17 18:16:54  rasc
- started more work on newer ISO 13818  descriptors
- some reorg work started

Revision 1.11  2003/10/16 19:02:28  rasc
some updates to dvbsnoop...
- small bugfixes
- tables updates from ETR 162

Revision 1.10  2003/07/08 19:59:50  rasc
restructuring... some new, some fixes,
trying to include DSM-CC, Well someone a ISO13818-6 and latest version of ISO 18313-1 to spare?

Revision 1.9  2003/06/24 23:51:03  rasc
bugfixes and enhancements

Revision 1.8  2002/08/17 20:36:12  obi
no more compiler warnings

Revision 1.7  2001/12/07 22:17:20  rasc
no message

Revision 1.6  2001/12/06 15:33:18  rasc
some small work on pespacket.c

Revision 1.5  2001/12/01 12:34:17  rasc
pespacket weitergestrickt, leider z.Zt. zuwenig Zeit um es richtig fertig zu machen.

Revision 1.4  2001/10/06 18:19:18  Toerli
Steuerzeichen entfernt. rasc wuerdest du mal bitte nen gescheiten unix-konformen Editor verwenden... windows editoren sind ungeeignet

Revision 1.3  2001/10/05 17:43:37  rasc
typo...

Revision 1.2  2001/10/02 21:52:44  rasc
- init der time_delta
- PES erweitert, PES arbeitet im read() noch nicht richtig!!
- muss tmbinc fragem, ob ich Mist baue, oder der Treiber (??)

Revision 1.1  2001/09/30 13:05:20  rasc
dvbsnoop v0.7  -- Commit to CVS


*/



#include "dvbsnoop.h"
#include "dvb_str.h"



typedef struct _STR_TABLE {
    u_int    from;          /* e.g. from id 1  */
    u_int    to;            /*      to   id 3  */
    u_char   *str;          /*      is   string xxx */
} STR_TABLE;




/*
  -- match id in range from STR_TABLE
*/

static char *findTableID (STR_TABLE *t, u_int id)

{

  while (t->str) {
    if (t->from <= id && t->to >= id)
       return t->str;
    t++;
  }

  return ">>ERROR: not (yet) defined... Report!<<";
}





/* -----------------------------------------  */



/*
  --  Table IDs (sections)
 ETSI EN 468   5.2
 EN 301 192
 TR 102 006
 RE 101 202
 ISO 13818-1
*/

char *dvbstrTableID (u_int id)

{
  STR_TABLE  TableIDs[] = {

 	// updated -- 2003-11-04
	// ATSC Table IDs could be included...
     {  0x00, 0x00,  "Program Association Table (PAT)" },
     {  0x01, 0x01,  "Conditional Access Table (CAT)" },
     {  0x02, 0x02,  "Program Map Table (PMT)" },
     {  0x03, 0x03,  "Transport Stream Description Table (TSDT)" },
     {  0x04, 0x04,  "ISO_IEC_14496_scene_description_section" },	/* $$$ TODO */
     {  0x05, 0x05,  "ISO_IEC_14496_object_description_section" },	/* $$$ TODO */
     {  0x06, 0x37,  "ITU-T Rec. H.222.0|ISO/IEC13818 reserved" },
     {  0x38, 0x39,  "ISO/IEC 13818-6 reserved" },
     {  0x3a, 0x3a,  "DSM-CC - multiprotocol encapsulated data" },
     {  0x3b, 0x3b,  "DSM-CC - U-N messages (DSI or DII)" },
     {  0x3c, 0x3c,  "DSM-CC - Download Data Messages (DDB)" },    /* TR 101 202 */
     {  0x3d, 0x3d,  "DSM-CC - stream descriptorlist" },
     {  0x3e, 0x3e,  "DSM-CC - private data section  // DVB datagram" }, /* EN 301 192 // ISO 13818-6 */
     {  0x3f, 0x3f,  "ISO/IEC 13818-6 reserved" },

     {  0x40, 0x40,  "Network Information Table (NIT) - actual network" },
     {  0x41, 0x41,  "Network Information Table (NIT) - other network" },
     {  0x42, 0x42,  "Service Description Table (SDT) - actual transport stream" },
     {  0x43, 0x45,  "reserved" },
     {  0x46, 0x46,  "Service Description Table (SDT) - other transport stream" },
     {  0x47, 0x49,  "reserved" },
     {  0x4A, 0x4A,  "Bouquet Association Table (BAT)" },
     {  0x4B, 0x4B,  "Update Notification Table (UNT)" },	/* TR 102 006 */
     {  0x4C, 0x4C,  "IP/MAC Notification Table (INT) [EN 301 192]" },  /* EN 192 */
     {  0x4D, 0x4D,  "reserved" },

     {  0x4E, 0x4E,  "Event Information Table (EIT) - actual transport stream, present/following" },
     {  0x4F, 0x4F,  "Event Information Table (EIT) - other transport stream, present/following" },
     {  0x50, 0x5F,  "Event Information Table (EIT) - actual transport stream, schedule" },
     {  0x60, 0x6F,  "Event Information Table (EIT) - other transport stream, schedule" },
     {  0x70, 0x70,  "Time Date Table (TDT)" },
     {  0x71, 0x71,  "Running Status Table (RST)" },
     {  0x72, 0x72,  "Stuffing Table (ST)" },
     {  0x73, 0x73,  "Time Offset Table (TOT)" },
     {  0x74, 0x74,  "MHP- Application Information Table (AIT)" }, /* MHP */
     {  0x75, 0x7D,  "reserved" },
     {  0x7E, 0x7E,  "Discontinuity Information Table (DIT)" },
     {  0x7F, 0x7F,  "Selection Information Table (SIT)" },
     {  0x80, 0x8F,  "DVB CA message section (EMM/ECM)" },   /* ITU-R BT.1300 ref. */
     {  0x90, 0xBF,  "User private" },
     {  0xC0, 0xFE,  "ATSC reserved" },		/* ETR 211e02 */
     {  0xFF, 0xFF,  "forbidden" },
     {  0,0, NULL }
  };


  return findTableID (TableIDs, id);
}


/*
  -- Descriptor table tags
*/

char *dvbstrMPEGDescriptorTAG (u_int tag)

{
  STR_TABLE  Tags[] = {
// ISO 13818-1
     {  0x00, 0x01,  "Reserved" },
     {  0x02, 0x02,  "video_stream_descriptor" },
     {  0x03, 0x03,  "audio_stream_descriptor" },
     {  0x04, 0x04,  "hierarchy_descriptor" },
     {  0x05, 0x05,  "registration_descriptor" },
     {  0x06, 0x06,  "data_stream_alignment_descriptor" },
     {  0x07, 0x07,  "target_background_grid_descriptor" },
     {  0x08, 0x08,  "video_window_descriptor" },
     {  0x09, 0x09,  "CA_descriptor" },
     {  0x0A, 0x0A,  "ISO_639_language_descriptor" },
     {  0x0B, 0x0B,  "system_clock_descriptor" },
     {  0x0C, 0x0C,  "multiplex_buffer_utilization_descriptor" },
     {  0x0D, 0x0D,  "copyright_descriptor" },
     {  0x0E, 0x0E,  "maximum_bitrate_descriptor" },
     {  0x0F, 0x0F,  "private_data_indicator_descriptor" },
     {  0x10, 0x10,  "smoothing_buffer_descriptor" },
     {  0x11, 0x11,  "STD_descriptor" },
     {  0x12, 0x12,  "IBP_descriptor" },
          /* MPEG DSM-CC */
     {  0x13, 0x13,  "carousel_identifier_descriptor" },
     {  0x14, 0x14,  "association_tag_descriptor" },
     {  0x15, 0x15,  "deferred_association_tag_descriptor" },
     {  0x16, 0x16,  "ISO/IEC13818-6 Reserved" },
     	  /* DSM-CC stream descriptors */
     {  0x17, 0x17,  "NPT_reference_descriptor" },
     {  0x18, 0x18,  "NPT_endpoint_descriptor" },
     {  0x19, 0x19,  "stream_mode_descriptor" },
     {  0x1A, 0x1A,  "stream_event_descriptor" },
          /* MPEG-4 descriptors */
     {  0x1B, 0x1B,  "MPEG4_video_descriptor" },
     {  0x1C, 0x1C,  "MPEG4_audio_descriptor" },
     {  0x1D, 0x1D,  "IOD_descriptor" },
     {  0x1E, 0x1E,  "SL_descriptor" },
     {  0x1F, 0x1F,  "FMC_descriptor" },
     {  0x20, 0x20,  "External_ES_ID_descriptor" },
     {  0x21, 0x21,  "MuxCode_descriptor" },
     {  0x22, 0x22,  "FMXBufferSize_descriptor" },
     {  0x23, 0x23,  "MultiplexBuffer_descriptor" },
     {  0x24, 0x24,  "FlexMuxTiming_descriptor" },

     {  0x25, 0x3F,  "ITU-T.Rec.H.222.0|ISO/IEC13818-1 Reserved" },

     {  0x40, 0xFF,  "Forbidden descriptor in MPEG context" },	// DVB Context
     {  0,0, NULL }
  };


  return findTableID (Tags, tag);
}
/*
  -- Descriptor table tags
*/

char *dvbstrDVBDescriptorTAG (u_int tag)

{
  STR_TABLE  Tags[] = {
     {  0x00, 0x3F,  "Forbidden descriptor in DVB context" },   // MPEG Context

// ETSI 300 468
     {  0x40, 0x40,  "network_name_descriptor" },
     {  0x41, 0x41,  "service_list_descriptor" },
     {  0x42, 0x42,  "stuffing_descriptor" },
     {  0x43, 0x43,  "satellite_delivery_system_descriptor" },
     {  0x44, 0x44,  "cable_delivery_system_descriptor" },
     {  0x45, 0x45,  "VBI_data_descriptor" },
     {  0x46, 0x46,  "VBI_teletext_descriptor" },
     {  0x47, 0x47,  "bouquet_name_descriptor" },
     {  0x48, 0x48,  "service_descriptor" },
     {  0x49, 0x49,  "country_availibility_descriptor" },
     {  0x4A, 0x4A,  "linkage_descriptor" },
     {  0x4B, 0x4B,  "NVOD_reference_descriptor" },
     {  0x4C, 0x4C,  "time_shifted_service_descriptor" },
     {  0x4D, 0x4D,  "short_event_descriptor" },
     {  0x4E, 0x4E,  "extended_event_descriptor" },
     {  0x4F, 0x4F,  "time_shifted_event_descriptor" },
     {  0x50, 0x50,  "component_descriptor" },
     {  0x51, 0x51,  "mosaic_descriptor" },
     {  0x52, 0x52,  "stream_identifier_descriptor" },
     {  0x53, 0x53,  "CA_identifier_descriptor" },
     {  0x54, 0x54,  "content_descriptor" },
     {  0x55, 0x55,  "parental_rating_descriptor" },
     {  0x56, 0x56,  "teletext_descriptor" },
     {  0x57, 0x57,  "telephone_descriptor" },
     {  0x58, 0x58,  "local_time_offset_descriptor" },
     {  0x59, 0x59,  "subtitling_descriptor" },
     {  0x5A, 0x5A,  "terrestrial_delivery_system_descriptor" },
     {  0x5B, 0x5B,  "multilingual_network_name_descriptor" },
     {  0x5C, 0x5C,  "multilingual_bouquet_name_descriptor" },
     {  0x5D, 0x5D,  "multilingual_service_name_descriptor" },
     {  0x5E, 0x5E,  "multilingual_component_descriptor" },
     {  0x5F, 0x5F,  "private_data_specifier_descriptor" },
     {  0x60, 0x60,  "service_move_descriptor" },
     {  0x61, 0x61,  "short_smoothing_buffer_descriptor" },
     {  0x62, 0x62,  "frequency_list_descriptor" },
     {  0x63, 0x63,  "partial_transport_stream_descriptor" },
     {  0x64, 0x64,  "data_broadcast_descriptor" },
     {  0x65, 0x65,  "CA_system_descriptor" },
     {  0x66, 0x66,  "data_broadcast_id_descriptor" },
     {  0x67, 0x67,  "transport_stream_descriptor" },
     {  0x68, 0x68,  "DSNG_descriptor" },
     {  0x69, 0x69,  "PDC_descriptor" },
     {  0x6A, 0x6A,  "AC3_descriptor" },
     {  0x6B, 0x6B,  "ancillary_data_descriptor" },
     {  0x6C, 0x6C,  "cell_list_descriptor" },
     {  0x6D, 0x6D,  "cell_frequency_list_descriptor" },
     {  0x6E, 0x6E,  "announcement_support_descriptor" },
     {  0x6F, 0x6F,  "application_signalling_descriptor" },
     {  0x70, 0x70,  "adaption_field_data_descriptor" },
     {  0x71, 0x71,  "service_identifier_descriptor" },
     {  0x72, 0x72,  "service_availability_descriptor" },
     {  0x73, 0x7F,  "reserved_descriptor" },
     {  0x80, 0xAF,  "ATSC reserved" },		/* ETR 211e02 */
     {  0xB0, 0xFE,  "User defined" },
     {  0xFF, 0xFF,  "Forbidden" },
     {  0,0, NULL }
  };


  return findTableID (Tags, tag);
}


/*
 -- current_next_indicator
 -- ISO/IEC13818-1|ITU H.222.0
*/

char *dvbstrCurrentNextIndicator (u_int flag)

{
  STR_TABLE  Table[] = {
     {  0x00, 0x00,  "valid next" },
     {  0x01, 0x01,  "valid now" },
     {  0,0, NULL }
  };

  return findTableID (Table, flag);
}