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New cdrskin option --grow_overwriteable_iso

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This commit is contained in:
Thomas Schmitt
2007-08-26 20:09:47 +00:00
parent 2139aa5ac3
commit 4398b35960
5 changed files with 439 additions and 52 deletions
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35
libburn/trunk/cdrskin/cdrfifo.c
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@ -79,6 +79,7 @@ struct CdrfifO {
/* eventual ISO-9660 image size obtained from first 64k of input */
double iso_fs_size;
char *iso_fs_descr; /* eventually block 16 to 31 of input */
/* (sequential) fd chaining */
/* fds: 0=source, 1=dest */
@ -162,6 +163,7 @@ int Cdrfifo_new(struct CdrfifO **ff, int source_fd, int dest_fd,
o->empty_counter= 0.0;
o->full_counter= 0.0;
o->iso_fs_size= -1.0;
o->iso_fs_descr= NULL;
for(i= 0; i<Cdrfifo_ffd_maX; i++) {
o->follow_up_fds[i][0]= o->follow_up_fds[i][1]= -1;
o->follow_up_eop[i]= o->follow_up_sod[i]= -1;
@ -222,6 +224,8 @@ int Cdrfifo_destroy(struct CdrfifO **ff, int flag)
/* eventual closing of source fds is the job of the calling application */
if(o->iso_fs_descr!=NULL)
free((char *) o->iso_fs_descr);
if(o->buffer!=NULL)
free((char *) o->buffer);
free((char *) o);
@ -400,6 +404,14 @@ int Cdrfifo_get_iso_fs_size(struct CdrfifO *o, double *size_in_bytes, int flag)
}
int Cdrfifo_adopt_iso_fs_descr(struct CdrfifO *o, char **pt, int flag)
{
*pt= o->iso_fs_descr;
o->iso_fs_descr= NULL;
return(*pt!=NULL);
}
/** Get counters which are mentioned by cdrecord at the end of burning.
It still has to be examined wether they mean what i believe they do.
*/
@ -882,19 +894,24 @@ int Cdrfifo_fill(struct CdrfifO *o, int size, int flag)
}
#ifndef Cdrfifo_standalonE
{ int Scan_for_iso_size(unsigned char data[2048], double *size_in_bytes,
if(fill>=32*2048) {
int Scan_for_iso_size(unsigned char data[2048], double *size_in_bytes,
int flag);
int i;
int bs= 16*2048;
double size;
/* try to obtain an ISO-9660 file system size */
for(i= 0; i<32*2048 && i+2048<=fill; i+=2048) {
ret= Scan_for_iso_size((unsigned char *) (o->buffer+i), &size, 0);
if(ret<=0)
continue;
/* memorize blocks 16 to 31 */
if(o->iso_fs_descr!=NULL)
free((char *) o->iso_fs_descr);
o->iso_fs_descr= TSOB_FELD(char,bs);
if(o->iso_fs_descr==NULL)
return(-1);
memcpy(o->iso_fs_descr,o->buffer+bs,bs);
/* try to obtain ISO-9660 file system size from block 16 */
ret= Scan_for_iso_size((unsigned char *) (o->buffer+bs), &size, 0);
if(ret>0)
o->iso_fs_size= size;
break;
}
}
#endif