demux_ty_osd.c

自己移植的linux下的流媒体播放器原代码,支持mms协议,支持ftp和http协议.

            case 0x07:                      // misc (TAB)
            {
               for ( x = 0 ; x < ( b2 - 0x20 ) ; x++ )
                  TY_CC_CUR_X++;
               break;
            }
         }
      }
   }
   CC_last = data;
   return 0;
}

// ===========================================================================
// Extended Data Service Decoding and OSD Presentation
// ===========================================================================
#define XDS_BUFFER_LENGTH     ( 16 )
#define XDS_DISPLAY_FRAMES    ( 120 )
static char *ty_XDS_Display[ XDS_BUFFER_LENGTH ];
static int ty_XDSAddLine = -1;
static int ty_XDSDisplayCount = -1;


static void ty_AddXDSToDisplay( char *format, ... )
{
   char line[ 80 ];
   int  index;
   va_list ap;

   if ( ty_XDSAddLine == -1 )
   {
      for( index = 0 ; index < XDS_BUFFER_LENGTH ; index++ )
      {
         ty_XDS_Display[ index ] = 0;
      }
      ty_XDSAddLine = 0;
   }

   va_start( ap, format );
   vsnprintf( line, 80, format, ap );
   va_end( ap );
   mp_msg( MSGT_DEMUX, MSGL_V, "XDS: %s\n", line );

   if ( ty_XDSAddLine == XDS_BUFFER_LENGTH )
   {
      mp_msg( MSGT_DEMUX, MSGL_ERR, "XDS Buffer would have been blown\n" );
   }

   if ( ty_XDS_Display[ ty_XDSAddLine ] != 0 )
   {
      free( ty_XDS_Display[ ty_XDSAddLine ] );
      ty_XDS_Display[ ty_XDSAddLine ] = 0;
   }

   ty_XDS_Display[ ty_XDSAddLine ] = malloc( strlen( line ) + 1 );
   strcpy( ty_XDS_Display[ ty_XDSAddLine ], line );
   ty_XDSAddLine++;
}


static void ty_DisplayXDSInfo()
{
   int index;
   int size;

   if ( ty_XDSDisplayCount == -1 )
   {
      for( index = 0 ; index < XDS_BUFFER_LENGTH ; index++ )
      {
         if ( ty_XDS_Display[ index ] != 0 )
         {
            break;
         }
      }
      if ( index != XDS_BUFFER_LENGTH )
      {
         size =  strlen( ty_XDS_Display[ index ] );

         // Right Justify the XDS Stuff
         memcpy( &( ty_OSD1.text[ 0 ][ TY_CC_MAX_X - size - 1 ] ), 
            ty_XDS_Display[ index ], size );
         free( ty_XDS_Display[ index ] );
         ty_XDS_Display[ index ] = 0;
         ty_XDSDisplayCount = 0;
         tyOSDUpdate = 1;

      }
      else
      {
         // We cleaned out all the XDS stuff to be displayed
         ty_XDSAddLine = 0;
      }
   }
   else
   {
      // We displayed that piece of XDS information long enough
      // Let's move on
      ty_XDSDisplayCount++;
      if ( ty_XDSDisplayCount >= XDS_DISPLAY_FRAMES )
      {
		   memset( ty_OSD1.text[ 0 ], ' ', TY_CC_MAX_X - 1 );
		      ty_OSD1.text[ 0 ][ TY_CC_MAX_X - 1 ] = 0;
         ty_XDSDisplayCount = -1;
         tyOSDUpdate = 1;
      }
   }
}


static int  TY_XDS_mode = 0;
static int  TY_XDS_type = 0;
static int  TY_XDS_length = 0;
static char TY_XDS_checksum = 0;

// Array of [ Mode ][ Type ][ Length ]
static char TY_XDS    [ 8 ][ 25 ][ 34 ];
static char TY_XDS_new[ 8 ][ 25 ][ 34 ];

// Array of [ MPAARating|TVRating ][ NumberRatings ]
static char *TY_XDS_CHIP[ 2 ][ 8 ] = 
{
   { "(NOT APPLICABLE)", "G", "PG", "PG-13", "R", "NC-17", "X", "(NOT RATED)" },
   { "(NOT RATED)", "TV-Y", "TV-Y7", "TV-G", "TV-PG", "TV-14", "TV-MA", 
      "(NOT RATED)" }
};

static char *TY_XDS_modes[] = 
{
  "CURRENT",                        // 01h-02h current program
  "FUTURE ",                        // 03h-04h future program
  "CHANNEL",                        // 05h-06h channel
  "MISC.  ",                        // 07h-08h miscellaneous
  "PUBLIC ",                        // 09h-0Ah public service
  "RESERV.",                        // 0Bh-0Ch reserved
  "UNDEF. ",
  "INVALID",
  "INVALID",
  "INVALID"
};

static int ty_XDSdecode( char b1, char b2 )
{
   char line[ 80 ];

   if ( b1 < 0x0F ) 
   {                                        // start packet 
      TY_XDS_length = 0;
      TY_XDS_mode = b1 >> 1;                // every other mode is a resume
      TY_XDS_type = b2;
      TY_XDS_checksum = b1 + b2;
      return 0;
   }

   TY_XDS_checksum += b1 + b2;
  
   // eof (next byte is checksum)
   if ( b1 == 0x0F ) 
   {        
      // validity check
      if ( !TY_XDS_length || TY_XDS_checksum & 0x7F )  
      {
         if ( TY_OSD_debug > 3 && !TY_XDS_length ) 
         {
            mp_msg( MSGT_DEMUX, MSGL_DBG3, 
               "%% TY_XDS CHECKSUM ERROR (ignoring)\n" );
         } 
         else 
         {
            TY_XDS_mode = 0;
            TY_XDS_type = 0;
            return 1;
         }
      }

      // check to see if the data has changed.
      if ( strncmp( TY_XDS[ TY_XDS_mode ][ TY_XDS_type ],
         TY_XDS_new[ TY_XDS_mode ][ TY_XDS_type ], TY_XDS_length - 1 ) ) 
      {
         char *TY_XDS_ptr = TY_XDS[ TY_XDS_mode ][ TY_XDS_type ];

         TY_XDS_ptr[ TY_XDS_length ] = 0;
         memcpy( TY_XDS[ TY_XDS_mode ][ TY_XDS_type ], 
            TY_XDS_new[ TY_XDS_mode ][ TY_XDS_type ], TY_XDS_length );

         // nasty hack: only print time codes if seconds are 0
         if ( TY_XDS_mode == 3 && TY_XDS_type == 1 && 
            !( TY_XDS_new[ 3 ][ 1 ][ 3 ] & 0x20 ) ) 
			{
            return 0;
			}
         if ( TY_XDS_mode == 0 && TY_XDS_type == 2 &&  
            ( TY_XDS_new[ 0 ][ 2 ][ 4 ] & 0x3f ) > 1 ) 
			{
            return 0;
			}

         mp_msg( MSGT_DEMUX, MSGL_DBG3, "%% %s ", TY_XDS_modes[ TY_XDS_mode ] );

         line[ 0 ] = 0;
         // printf( "XDS Code %x\n", 
			//    ( TY_XDS_mode << 9 ) + TY_XDS_type + 0x100 );
         switch ( ( TY_XDS_mode << 9 ) + TY_XDS_type + 0x100 ) 
         {
            // cases are specified in 2 bytes hex representing mode, type.
            // TY_XDS_ptr will point to the current class buffer
            case 0x0101:                    // current
            case 0x0301:                    // future
            {
               char *mon[] = 
               { 
                  "0", "Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul",
                  "Aug", "Sep", "Oct", "Nov", "Dec", "13", "14", "15"
               };
               ty_AddXDSToDisplay( "AIR DATE: %s %2d %d:%02d:00",
                 mon[ TY_XDS_ptr[ 3 ] & 0x0f ], 
                 TY_XDS_ptr[ 2 ] & 0x1f,
                 TY_XDS_ptr[ 1 ] & 0x1f, 
                 TY_XDS_ptr[ 0 ] & 0x3f
                 );

               // Program is tape delayed
               if ( TY_XDS_ptr[ 3 ] & 0x10 ) ty_AddXDSToDisplay( " TAPE" );
            }
            break;

            case 0x0102:                    // current program length
            case 0x0302:                    // future
            {
               ty_AddXDSToDisplay(
                  "DURATION: %d:%02d:%02d of %d:%02d:%02d",
                  TY_XDS_ptr[ 3 ] & 0x3f, 
                  TY_XDS_ptr[ 2 ] & 0x3f,
                  TY_XDS_ptr[ 4 ] & 0x3f, 
                  TY_XDS_ptr[ 1 ] & 0x3f,
                  TY_XDS_ptr[ 0 ] & 0x3f, 0);
               break;
            }

            case 0x0103:                    // current program name
            case 0x0303:                    // future
            {
               ty_AddXDSToDisplay( "TITLE: %s", TY_XDS_ptr ); 
               break;
            }

            case 0x0104:                    // current program type
            case 0x0304:                    // future
            {
               // for now just print out the raw data
               // requires a 127 string array to parse
               // properly and isn't worth it.
               sprintf ( line, "%sGENRE:", line );
               {
                  int x;
                  for ( x = 0 ; x < TY_XDS_length ; x++ )
                     sprintf( line, "%s %02x", line, TY_XDS_ptr[ x ] );
               }
               ty_AddXDSToDisplay( line );
               break;
            }

            case 0x0105:                    // current program rating
            case 0x0305:                    // future
            {
               sprintf( line, "%sRATING: %s", line,
                  TY_XDS_CHIP[ ( TY_XDS_ptr[ 0 ] & 0x08 ) >> 3 ]
                  [ TY_XDS_ptr[ 1 ] & 0x07 ] );
               if ( TY_XDS_ptr[ 0 ] & 0x20 ) 
                  sprintf( line, "%s DIALOGUE", line );
               if ( TY_XDS_ptr[ 1 ] & 0x08 ) 
                  sprintf( line, "%s LANGUAGE", line );
               if ( TY_XDS_ptr[ 1 ] & 0x10 ) 
                  sprintf( line, "%s SEXUAL", line );
               if ( TY_XDS_ptr[ 1 ] & 0x20 ) 
                  sprintf( line, "%s VIOLENCE", line );
               ty_AddXDSToDisplay( line );

               // raw output for verification.
               if ( TY_OSD_debug > 1 )
                  mp_msg( MSGT_DEMUX, MSGL_DBG3, " (%02x %02x)", 
                     TY_XDS_ptr[ 0 ], TY_XDS_ptr[ 1 ] );
               break;
            }

            case 0x0106:                    // current program audio services
            case 0x0306:                    // future
            {
               // requires table, never actually seen it used either
               ty_AddXDSToDisplay( "AUDIO: %02x %02x", TY_XDS_ptr[ 0 ], 
                  TY_XDS_ptr[ 1 ] );
               break;
            }

            case 0x0109:                    // current program aspect ratio
            case 0x0309:                    // future
            {
               // requires table, rare
               ty_AddXDSToDisplay( "ASPECT: %02x %02x", 
                  TY_XDS_ptr[ 0 ], TY_XDS_ptr[ 1 ] );
               break;
            }

            case 0x0110 ... 0x0117:         // program description
            {
               ty_AddXDSToDisplay( "DESCRIP: %s", TY_XDS_ptr ); 
               break;
            }

            case 0x0501:                    // channel network name
            {
               ty_AddXDSToDisplay( "NETWORK: %s", TY_XDS_ptr ); 
               break;
            }

            case 0x0502:                    // channel network call letters
            {
               ty_AddXDSToDisplay( "CALLSIGN: %s", TY_XDS_ptr ); 
               break;
            }

            case 0x0701:                    // misc. time of day
            {
#define TIMEZONE          ( TY_XDS[ 3 ][ 4 ][ 0 ] & 0x1f )
#define DST               ( ( TY_XDS[ 3 ][ 4 ][ 0 ] & 0x20 ) >> 5 )
               struct tm tm = 
               {
                  .tm_sec = 0,                                // sec
                  .tm_min = ( TY_XDS_ptr[ 0 ] & 0x3F ),       // min
                  .tm_hour = ( TY_XDS_ptr[ 1 ] & 0x1F ),      // hour
                  .tm_mday = ( TY_XDS_ptr[ 2 ] & 0x1F ),      // day
                  .tm_mon = ( TY_XDS_ptr[ 3 ] & 0x1f ) - 1,   // month
                  .tm_year = ( TY_XDS_ptr[ 5 ] & 0x3f ) + 90, // year
                  .tm_wday = 0,                               // day of week
                  .tm_yday = 0,                               // day of year
                  .tm_isdst = 0,                              // DST
               };

               time_t time_t = mktime( &tm );
               char *timestr;
    
               time_t -= ( ( TIMEZONE - DST ) * 60 * 60 );
               timestr = ctime( &time_t );
               timestr[ strlen( timestr ) - 1 ] = 0;
    
               sprintf( line, "%sCUR.TIME: %s ", line, timestr );
               if ( TY_XDS[ 3 ][ 4 ][ 0 ] ) 
               {
                  sprintf( line, "%sUTC-%d", line, TIMEZONE );
                  if (DST) sprintf( line, "%s DST", line );
               } 
               else
                  sprintf( line, "%sUTC", line );

               ty_AddXDSToDisplay( line );

               break;
            }

            case 0x0704:                    //misc. local time zone
            {
               sprintf( line, "%sTIMEZONE: UTC-%d", 
                  line, TY_XDS_ptr[ 0 ] & 0x1f );
               if ( TY_XDS_ptr[ 0 ] & 0x20 ) sprintf( line, "%s DST", line );
               ty_AddXDSToDisplay( line );
               break;
            }

            default:
            {
               mp_msg( MSGT_DEMUX, MSGL_DBG3, "UNKNOWN CLASS %d TYPE %d", 
                  ( TY_XDS_mode << 1 ) + 1, TY_XDS_type );
              if ( TY_OSD_debug > 1 ) 
              {
                  int x;
                  mp_msg( MSGT_DEMUX, MSGL_DBG3, "\nDUMP:\n" );
                  for ( x = 0 ; x < TY_XDS_length ; x++ )
                    mp_msg( MSGT_DEMUX, MSGL_DBG3, " %02x %c", 
                       TY_XDS_ptr[ x ], TY_XDS_ptr[ x ] );
                  mp_msg( MSGT_DEMUX, MSGL_DBG3, "\n" );
               } 
            }
         }
         if ( TY_OSD_debug > 1 ) 
            mp_msg( MSGT_DEMUX, MSGL_DBG3, " (%d)", TY_XDS_length );
      }
      TY_XDS_mode = 0;
      TY_XDS_type = 0;
   } 
   else if ( TY_XDS_length < 34 ) 
   {
      TY_XDS_new[ TY_XDS_mode ][ TY_XDS_type ][ TY_XDS_length++ ] = b1;
      TY_XDS_new[ TY_XDS_mode ][ TY_XDS_type ][ TY_XDS_length++ ] = b2;
   }
   return 0;
}


// 42 x 10
static char *testline = "0123456789012345678901234567890123456789012";

// ===========================================================================
// Callback from Video Display Processing to put up the OSD
// ===========================================================================
void ty_processuserdata( unsigned char* buf, int len )
{
	int index;

	sub_justify = 1;

	if ( subcc_enabled )
	{
		if ( tyOSDInited == 0 )
		{
			for ( index = 0; index < SUB_MAX_TEXT ; index++ )
			{
				ty_OSD1.text[ index ] = malloc( TY_CC_MAX_X );
				ty_OSD2.text[ index ] = malloc( TY_CC_MAX_X );
			}
			ty_ClearOSD( 0 );
			ty_OSD1.lines = SUB_MAX_TEXT;
			ty_OSD2.lines = SUB_MAX_TEXT;
			ty_pOSD1 = &ty_OSD1;
			ty_pOSD2 = &ty_OSD2;
			tyOSDUpdate = 0;
			tyOSDInited = 1;
		}

		if ( buf[ 0 ] == 0x01 )
		{
			ty_CCdecode( buf[ 1 ], buf[ 2 ] );
		}
		if ( buf[ 0 ] == 0x02 )
		{
			ty_XDSdecode( buf[ 1 ], buf[ 2 ] );
		}

      ty_DisplayXDSInfo();

		if ( tyOSDUpdate )
		{
			// for ( index = 0; index < SUB_MAX_TEXT ; index++ )
			// {
         //    printf( "OSD:%d:%s\n", index, ty_OSD1.text[ index ] );
         // }
		   vo_sub = &ty_OSD1;
   		vo_osd_changed( OSDTYPE_SUBTITLE );
			tyOSDUpdate = 0;
		}
	}
}