[dvbtools-cvs] dvbsubs dvbsubs.c,1.1.1.1,1.2

[<lin...@us...>]

Update of /cvsroot/dvbtools/dvbsubs
In directory usw-pr-cvs1:/tmp/cvs-serv14261

Modified Files:
	dvbsubs.c 
Log Message:
more parsing routines

Index: dvbsubs.c
===================================================================
RCS file: /cvsroot/dvbtools/dvbsubs/dvbsubs.c,v
retrieving revision 1.1.1.1
retrieving revision 1.2
diff -C2 -d -r1.1.1.1 -r1.2
*** dvbsubs.c	15 Jun 2002 23:14:03 -0000	1.1.1.1
--- dvbsubs.c	16 Jun 2002 15:28:02 -0000	1.2
***************
*** 151,194 ****
  }
  
  int main(int argc, char* argv[]) {
    int n;
    int fd;
  
!   int segment_length,
!       segment_type,
!       page_id;
  
!   fd=open("613.pes",O_RDONLY);
!   if (fd > 0) {
!     n=read(fd,buf,100000);
!     fprintf(stderr,"file opened, read %d bytes\n",n);
!   } else {
      fprintf(stderr,"can't open file\n");
      exit(0);
    }
  
!   i=0xE;
  
!   /* PES DATA FIELD */
!   printf("<pes_packet data_identifier=\"0x%02x\">\n",buf[i++]);
!   printf("<subtitle_stream id=\"0x%02x\">\n",buf[i++]);
!   while (buf[i]==0x0f) {
!     /* SUBTITLING SEGMENT */
!     printf("sync_byte=0x%02x\n",buf[i++]);
!     segment_type=buf[i++];
  
!     /* SEGMENT_DATA_FIELD */
!     switch(segment_type) {
!       case 0x10: process_page_composition_segment();
!                  break;
!       case 0x11: process_region_composition_segment();
!                  break;
!       default:
!         segment_length=(buf[i+2]<<8)|buf[i+3];
!         i+=segment_length+4;
!         printf("SKIPPING segment %02x, length %d\n",segment_type,segment_length);
      }
!   }   
!   printf("</subtitle_stream>\n");
!   printf("</pes_packet>\n");
  }
--- 151,275 ----
  }
  
+ void process_object_data_segment() {
+   int segment_type,
+       page_id,
+       segment_length,
+       object_id,
+       object_version_number,
+       object_coding_method,
+       non_modifying_colour_flag;
+       
+   int top_field_data_block_length,
+       bottom_field_data_block_length;
+       
+   int j;
+ 
+   page_id=(buf[i]<<8)|buf[i+1]; i+=2;
+   segment_length=(buf[i]<<8)|buf[i+1]; i+=2;
+   object_id=(buf[i]<<8)|buf[i+1]; i+=2;
+   object_version_number=(buf[i]&0xf0)>>4;
+   object_coding_method=(buf[i]&0x0c)>>2;
+   non_modifying_colour_flag=(buf[i]&0x02)>>1;
+   i++;
+ 
+   j=i+segment_length-3;
+   
+   printf("<object_data_segment page_id=\"0x%02x\" object_id=\"0x%02x\">\n",page_id,object_id);
+ 
+   printf("<object_version_number>%d</object_version_number>\n",object_version_number);
+   printf("<object_coding_method>%d</object_coding_method>\n",object_coding_method);
+   printf("<non_modifying_colour_flag>%d</non_modifying_colour_flag>\n",non_modifying_colour_flag);
+ 
+   while (i < j) {
+     i++;
+   }
+ 
+   printf("</object_data_segment>\n");
+ }
+ 
+ 
  int main(int argc, char* argv[]) {
    int n;
    int fd;
+   int x;
  
!   int stream_id,
!       PES_packet_length;
  
!   unsigned char PTS_1;
!   unsigned short PTS_2,PTS_3;
! 
!   int segment_length,
!       segment_type;
!   
!   if (argc!=2) {
!     fprintf(stderr,"USAGE: dvbsubs file.pes\n");
!     exit(0);
!   }
!   
!   fd=open(argv[1],O_RDONLY);
!   if (fd <= 0) {
      fprintf(stderr,"can't open file\n");
      exit(0);
    }
  
!   while (1) {
!     /* READ PES PACKET */
!     n=read(fd,buf,6);
  
!     if ((buf[0]!=0) || (buf[1]!=0) || (buf[2]!=1)) {
!       fprintf(stdout,"CAN NOT FIND PES PACKET\n");
!       exit(-1);
!     }
!     i=3;
!     stream_id=buf[i++];
!     PES_packet_length=(buf[i]<<8)|buf[i+1]; i+=2;
!     n=read(fd,&buf[6],PES_packet_length);
  
!     printf("PES_packet_length=%d\n",PES_packet_length);
!     i++;  // Skip some boring PES flags
!     if (buf[i]!=0x80) {
!      fprintf(stdout,"UNEXPECTED PES HEADER: %02x\n",buf[i]);
!      exit(-1);
      }
!     i++; 
!     if (buf[i]!=5) {
!      fprintf(stdout,"UNEXPECTED PES HEADER DATA LENGTH: %d\n",buf[i]);
!      exit(-1);
!     }
!     i++;  // Header data length
!     PTS_1=(buf[i++]&0x0e)<<28;  // 3 bits
!     PTS_2=(buf[i]<<7)|((buf[i+1]&0xfe)>>1);         // 15 bits
!     i+=2;
!     PTS_3=(buf[i]<<7)|((buf[i+1]&0xfe)>>1);         // 15 bits
!     i+=2;
! 
!     printf("i=%d\n",i);
!     printf("<pes_packet data_identifier=\"0x%02x\">\n",buf[i++]);
!     printf("<pts pts1=\"0x%01x\"  pts1=\"0x%04x\"  pts1=\"0x%04x\" />\n",PTS_1,PTS_2,PTS_3);
!     printf("<subtitle_stream id=\"0x%02x\">\n",buf[i++]);
!     while (buf[i]==0x0f) {
!       /* SUBTITLING SEGMENT */
!       i++;  // sync_byte
!       segment_type=buf[i++];
! 
!       /* SEGMENT_DATA_FIELD */
!       switch(segment_type) {
!         case 0x10: process_page_composition_segment();
!                    break;
!         case 0x11: process_region_composition_segment();
!                    break;
! //      case 0x12: process_CLUT_definition_segment();
! //                 break;
!         case 0x13: process_object_data_segment();
!                    break;
!         default:
!           segment_length=(buf[i+2]<<8)|buf[i+3];
!           i+=segment_length+4;
!           printf("SKIPPING segment %02x, length %d\n",segment_type,segment_length);
!       }
!     }   
!     printf("</subtitle_stream>\n");
!     printf("</pes_packet>\n");
!   }
  }