329 lines
6.3 KiB
C
329 lines
6.3 KiB
C
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/*
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cc -g -c burn_wrap.c
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*/
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/* libburn wrappers for libisoburn
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Copyright 2007 Thomas Schmitt, <scdbackup@gmx.net>
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*/
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#include <stdio.h>
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#include <ctype.h>
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#include <sys/types.h>
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#include <unistd.h>
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#include <string.h>
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#include <stdlib.h>
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#include <sys/stat.h>
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#include "../libburn/libburn.h"
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#include "../libisofs/libisofs.h"
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#include "libisoburn.h"
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#include "isoburn.h"
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/* The global list of isoburn objects. Usually there is only one. */
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extern struct isoburn *isoburn_list_start; /* in isoburn.c */
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int isoburn_initialize(void)
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{
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int ret;
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if(!iso_init())
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return(0);
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if(!burn_initialize())
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return(0);
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isoburn_destroy_all(&isoburn_list_start, 0); /* isoburn_list_start= NULL */
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reurn(1);
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}
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/** Examine the media and sets appropriate emulation if needed.
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*/
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static int isoburn_welcome_media(struct isoburn **o, struct burn_drive *d,
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int flag)
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{
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int ret;
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struct burn_multi_caps *caps= NULL;
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ret= burn_disc_get_multi_caps(d, 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) { /* set emulation to overwriteable */
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ret= isoburn_new(o, 0);
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if(ret<=0)
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goto ex;
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(*o)->emulation_mode= 1;
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(*o)->drive= d;
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ret= isoburn_start_emulation(*o, 0);
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if(ret<=0)
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goto ex;
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}
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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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int isoburn_drive_scan_and_grab(struct burn_drive_info *drive_infos[],
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char* adr, int load)
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{
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int ret;
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struct stat stbuf;
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char libburn_drive_adr[BURN_DRIVE_ADR_LEN];
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struct isoburn *o= NULL;
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ret= burn_drive_convert_fs_adr(adr, libburn_drive_adr);
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if(ret<0)
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return(ret);
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if(ret==0) {
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if(stat(adr,&stbuf)!=-1) {
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if(S_ISREG(stbuf.st_mode) || S_ISBLK(stbuf.st_mode)) {
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return(0);
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/* >>> would be acceptable in future */;
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/* >>> create null-drive */;
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/* >>> set emulation to standard i/o */;
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} else {
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/* >>> unsuitable file type */;
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return(0);
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}
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} else {
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/* >>> file not found */;
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return(0);
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}
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} else {
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ret= burn_drive_scan_and_grab(drive_infos, adr, load);
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if(ret<=0)
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goto ex;
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ret= isoburn_examine_media(&o, (*drive_infos)[0].drive, 0);
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if(ret<=0)
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goto ex;
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}
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ret= 1;
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ex:
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if(ret<=0)
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isoburn_destroy(&o,0);
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return(ret);
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}
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int isoburn_drive_grab(struct burn_drive *drive, int load)
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{
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int ret;
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struct isoburn *o= NULL;
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ret= burn_drive_grab(drive, load);
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if(ret<=0)
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goto ex;
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ret= isoburn_examine_media(&o, drive, 0);
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if(ret<=0)
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goto ex;
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ret= 1;
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ex:
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if(ret<=0)
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isoburn_destroy(&o,0);
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return(ret);
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}
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/** Retrieve media emulation and eventual isoburn emulator of drive.
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@return -1 unsuitable media, 0 generic media, 1 emulated media.
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*/
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static int isoburn_find_emulator(struct isoburn **pt,
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struct burn_drive *drive, int flag)
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{
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int ret;
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ret= isoburn_find_by_drive(pt, drive, 0);
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if(ret<=0)
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return(0);
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if((*pt)->emulation_mode==-1)
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return(-1);
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if((*pt)->emulation_mode==0)
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return(0);
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return(1);
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}
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enum burn_disc_status isoburn_disc_get_status(struct burn_drive *drive)
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{
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int ret;
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struct isoburn *o;
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ret= isoburn_find_emulator(&o, drive, 0);
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if(ret<0)
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return(BURN_DISC_UNSUITABLE);
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if(ret==0)
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return(burn_disc_get_status(drive));
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/* emulated status */
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if(o->emulation_mode==-1)
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return(BURN_DISC_UNSUITABLE);
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if(o->nwa>0)
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return(BURN_DISC_APPENDABLE);
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return(BURN_DISC_BLANK);
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}
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void isoburn_disc_erase(struct burn_drive *drive, int fast)
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{
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int ret;
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struct isoburn *o;
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ret= isoburn_find_emulator(&o, drive, 0);
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if(ret>0) {
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if(o->emulation_mode==-1) {
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/* >>> influence wrote_well reply or have wrote_well wrapper ? */
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return;
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}
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if(o->emulation_mode>0) {
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ret= isoburn_invalidate_iso(o, 0);
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/* >>> influence wrote_well reply or have wrote_well wrapper ? */
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return;
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}
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}
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burn_disc_erase(drive, fast);
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}
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int isoburn_disc_get_msc1(struct burn_drive *d, int *start_lba)
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{
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int ret;
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struct isoburn *o;
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if(isoburn_disc_get_status(d)!=BURN_DISC_APPENDABLE)
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return(0);
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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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}
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int isoburn_disc_track_lba_nwa(struct burn_drive *d,
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struct burn_write_opts *opts,
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int trackno, int *lba, int *nwa)
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{
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int ret;
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struct isoburn *o;
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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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}
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int isoburn_disc_write(struct burn_write_opts *opts, struct burn_disc *disc)
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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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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)
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return(0);
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if(o->emulation_mode==2) {
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return(0);
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/* >>> implement an asynchronous standard i/o writer */;
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}
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burn_disc_write(opts, disc);
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}
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void isoburn_drive_release(struct burn_drive *drive, int eject)
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{
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int ret, no_drive_release= 0;
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struct isoburn *o;
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ret= isoburn_find_emulator(&o, drive, 0);
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if(ret<0)
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return;
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if(o!=NULL)
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isoburn_destroy(&o, 0);
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burn_drive_release(drive, eject);
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}
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void isoburn_finish(void)
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{
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isoburn_destroy_all(&isoburn_list_start, 0);
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burn_finish();
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iso_finish();
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}
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int isoburn_needs_emulation(struct burn_drive *drive)
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{
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int ret;
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struct isoburn *o;
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enum burn_disc_status s;
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s= isoburn_disc_get_status(drive);
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if(s!=BURN_DISC_BLANK && s!=BURN_DISC_APPENDABLE)
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return(-1);
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ret= isoburn_find_emulator(&o, drive, 0);
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if(ret<0)
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return(-1);
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if(ret>0)
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if(o->emulation_mode>0)
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return(1);
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return(0);
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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)
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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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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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}
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