New inner function isoburn_set_start_byte()
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4e2cb0897e
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9bce3a95e6
@ -259,10 +259,11 @@ int isoburn_disc_get_msc1(struct burn_drive *d, int *start_lba)
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ret= isoburn_find_emulator(&o, d, 0);
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if(ret<0)
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return(0);
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if(ret==0)
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return(burn_disc_get_msc1(d, start_lba));
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*start_lba= 0;
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return(1);
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if(ret>0) if(o->emulation_mode>0) {
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*start_lba= 0;
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return(1);
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}
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return(burn_disc_get_msc1(d, start_lba));
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}
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@ -276,11 +277,12 @@ int isoburn_disc_track_lba_nwa(struct burn_drive *d,
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ret= isoburn_find_emulator(&o, d, 0);
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if(ret<0)
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return(0);
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if(ret==0)
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return(burn_disc_track_lba_nwa(d, opts, trackno, lba, nwa));
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*lba= 0;
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*nwa= o->nwa;
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return(1);
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if(ret>0) if(o->emulation_mode>0) {
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*lba= 0;
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*nwa= o->nwa;
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return(1);
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}
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return(burn_disc_track_lba_nwa(d, opts, trackno, lba, nwa));
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}
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@ -343,29 +345,44 @@ int isoburn_needs_emulation(struct burn_drive *drive)
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}
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int isoburn_set_start_byte(struct isoburn *o, off_t value, int flag)
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{
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int ret;
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struct burn_drive *drive = o->drive;
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struct burn_multi_caps *caps= NULL;
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ret= burn_disc_get_multi_caps(drive, BURN_WRITE_NONE, &caps, 0);
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if(ret<=0)
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goto ex;
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if(!caps->start_adr)
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{ret= 0; goto ex;}
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o->min_start_byte= value;
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if(value % caps->start_alignment)
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value+= caps->start_alignment - (value % caps->start_alignment);
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o->nwa= value/2048;
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ret= 1;
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ex:
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if(caps!=NULL)
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burn_disc_free_multi_caps(&caps);
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return(ret);
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}
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void isoburn_write_opts_set_start_byte(struct burn_write_opts *opts,
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off_t value)
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{
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int ret;
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struct isoburn *o;
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struct burn_drive *drive;
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struct burn_multi_caps *caps= NULL;
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drive= burn_write_opts_get_drive(opts);
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ret= isoburn_find_emulator(&o, drive, 0);
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if(ret<=0) /* no emulation, no burn_write_opts_set_start_byte() */
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goto ex;
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ret= burn_disc_get_multi_caps(drive, BURN_WRITE_NONE, &caps, 0);
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return;
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ret = isoburn_set_start_byte(o, value, 0);
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if(ret<=0)
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goto ex;
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o->min_start_byte= value;
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if(value % caps->start_alignment)
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value+= caps->start_alignment - (value % caps->start_alignment);
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o->nwa= value/2048;
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burn_write_opts_set_start_byte(opts, value);
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ex:
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if(caps!=NULL)
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burn_disc_free_multi_caps(&caps);
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return;
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burn_write_opts_set_start_byte(opts, ((off_t) o->nwa) * (off_t) 2048);
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}
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@ -101,8 +101,8 @@ int isoburn_invalidate_iso(struct isoburn *o, int flag);
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/* Calls from isofs_wrap.c into burn_wrap.c */
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/** Get an eventual isoburn object which is wrapped around the drive.
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@param pt Eventually contains a pointer to the found object.
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Is allowed to contain NULL if return value is -1 or 0.
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@param pt Eventually returns a pointer to the found object.
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It is allowed to become NULL if return value is -1 or 0.
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In this case, the drive is a genuine libburn drive
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with no emulation activated by isoburn.
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@param drive The drive to be searched for
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@ -112,5 +112,17 @@ int isoburn_invalidate_iso(struct isoburn *o, int flag);
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int isoburn_find_emulator(struct isoburn **pt,
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struct burn_drive *drive, int flag);
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/** Set the start address for an emulated add-on session. The value will
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be rounded up to the alignment necessary for the media. The aligned
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value will be divided by 2048 and then put into o->nwa .
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@param o The isoburn object to be programmed.
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@param value The start address in bytes
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@param flag unused yet
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@return <=0 is failure , >0 success
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*/
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int isoburn_set_start_byte(struct isoburn *o, off_t value, int flag);
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#endif /* Isoburn_includeD */
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