TempleOSCDV4.11.ISO
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Terry A. Davis authored and minexew committed
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@@ -0,0 +1,247 @@
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//ISO1 is ISO9660
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//ISO2 is ISO13490
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//ISO3 is ISO13346
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Bool ISODrvInit(CDrv *dv,I64 blk)
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{
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CBlkDev *bd=dv->bd;
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I64 spc=bd->blk_size>>BLK_SIZE_BITS,i=blk/spc,drv_offset=0;
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CISO1PriDesc *iso=MAlloc(bd->blk_size);
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CISO1DirEntry *de;
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Bool unlock,res=FALSE;
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U8 buf[8];
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try {
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unlock=DrvLock(dv);
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dv->fs_type=FSt_ISO9660; //default
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dv->spc=spc;
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dv->drv_offset=bd->drv_offset=dv->data_area=dv->root_cluster=dv->size=0;
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while (TRUE) {
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dv->size=MaxI64(dv->size,(i+1)*spc);
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RBlks(dv,iso,i*spc,spc);
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buf[0](U32)=iso->id[0](U32);
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buf[4](U16)=iso->id[4](U8);
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switch (LstMatch(buf,"CD001\0CDW02\0BEA01\0BOOT2\0NSR02\0NSR03\0TEA01\0",
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LMF_EXACT)) {
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case 0:
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switch (iso->type) {
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case ISO1T_BOOT_RECORD:
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drv_offset+=(2*DVD_BLK_SIZE+DVD_BLK_SIZE)/BLK_SIZE;
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break;
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case ISO1T_SUPPLEMENTARY_DESC:
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de=&iso->root_dir_record;
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dv->root_cluster=de->loc.little;
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dv->size=iso->vol_space_size.little*bd->blk_size>>BLK_SIZE_BITS;
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if (!StrCmp(iso->publisher_id,"TempleOS RedSea")) {
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dv->fs_type=FSt_REDSEA;
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bd->drv_offset=dv->drv_offset=19<<2+drv_offset;
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bd->max_blk=dv->size-1;
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dv->size-=bd->drv_offset;
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RedSeaDrvInit(dv);
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}
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res=TRUE;
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goto ipi_done;
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case ISO1T_TERMINATOR:
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throw('Drv');
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}
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break;
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default: //Its normal for ISO13346 to read NULL blk as terminator
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PrintErr("File System Not Supported\n");
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throw('Drv');
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}
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i++;
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}
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ipi_done:
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Free(iso);
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if (unlock)
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DrvUnlock(dv);
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} catch {
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dv->fs_type=FSt_ISO9660;
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dv->spc=spc;
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dv->drv_offset=bd->drv_offset=dv->data_area=dv->root_cluster=0;
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Free(iso);
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if (unlock)
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DrvUnlock(dv);
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}
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return res;
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}
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U0 DVDImageRead(U8 dvd_drv_let,U8 *out_name)
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{//Read entire CD/DVD image into ISO file.
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CDrv *dv=Let2Drv(dvd_drv_let);
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CBlkDev *bd=dv->bd;
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U8 *buf=MAlloc(COPY_BUF_BLKS<<BLK_SIZE_BITS),
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*out_name2=DftExt(out_name,"ISO");
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CFile *f=FOpen(out_name2,"w");
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I64 n,spc=bd->blk_size>>BLK_SIZE_BITS,blk=0,cnt,retry;
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BlkDevInit(bd);
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if (bd->type!=BDT_ATAPI)
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throw('BlkDev');
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if (!out_name)
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out_name=blkdev.dft_iso_filename;
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cnt=CeilU64(dv->size,spc);
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while (cnt>0) {
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if (cnt>COPY_BUF_BLKS)
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n=COPY_BUF_BLKS;
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else
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n=cnt;
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if (n>bd->max_reads)
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n=bd->max_reads;
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retry=4;
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while (--retry)
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if (ATAPIReadBlks2(bd,tS+7.0+0.004*n/spc,buf,blk/spc,n/spc,TRUE))
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//n is 0x800 if max_reads. Up to 8 additional seconds
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break;
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if (!retry)
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ATAPIReadBlks2(bd,0,buf,blk/spc,n/spc,TRUE);
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FWBlks(f,buf,blk,n);
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cnt-=n;
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blk+=n;
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}
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FClose(f);
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Free(buf);
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Free(out_name2);
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}
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class CDualBuf
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{
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U8 *buf0,*buf1;
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I64 in_buf,out_buf,cnt;
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U8 *filename;
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CBlkDev *dvd_bd;
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};
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U0 DVDImageWriteTask(CDualBuf *d)
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{
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U8 *buf;
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I64 n,blk=0,cnt=d->cnt;
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CFile *f;
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if (FileAttr(d->filename)&RS_ATTR_CONTIGUOUS)
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f=FOpen(d->filename,"rc");
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else
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f=FOpen(d->filename,"r");
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while (cnt>0) {
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if (cnt>COPY_BUF_BLKS)
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n=COPY_BUF_BLKS;
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else
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n=cnt;
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if (n>d->dvd_bd->max_writes)
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n=d->dvd_bd->max_writes;
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if (d->in_buf&1)
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buf=d->buf1;
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else
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buf=d->buf0;
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while (d->in_buf>d->out_buf+1)
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Yield;
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FRBlks(f,buf,blk,n);
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d->in_buf++;
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cnt-=n;
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blk+=n;
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}
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FClose(f);
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}
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U0 DVDImageWrite(U8 dvd_drv_let,U8 *in_name=NULL,I64 media_type=MT_DVD)
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{//Write CD/DVD ISO file to disk.
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CDualBuf *d=CAlloc(sizeof(CDualBuf));
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U8 *buf,*in_name2,*in_name3;
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I64 i,n,spc,blk=0,cnt;
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CDrv *dv=Let2Drv(dvd_drv_let);
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CBlkDev *bd=dv->bd,*bd2;
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CTask *task;
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CFile *f;
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if (!in_name)
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in_name=blkdev.dft_iso_filename;
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in_name3=DftExt(in_name,"ISO");
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in_name2=FileNameAbs(in_name3);
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f=FOpen(in_name2,"r");
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if (!f) {
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Free(d);
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return;
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}
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cnt=(FSize(f)+BLK_SIZE-1)>>BLK_SIZE_BITS;
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FClose(f);
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if (bd->type!=BDT_ATAPI)
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throw('BlkDev');
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bd2=Let2BlkDev(*in_name2);
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while (bd2->lock_fwding)
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bd2=bd2->lock_fwding; //If two blkdevs on same controller, use one lock
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if ((bd2->type==BDT_ATA || bd2->type==BDT_ATAPI) &&
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bd2->base0==bd->base0) {
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PrintErr("Can't burn CD/DVD on same ATA controller as file.\n\n");
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throw('BlkDev');
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}
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bd->flags|=BDF_READ_ONLY_OVERRIDE;
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BlkDevInit(bd);
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spc=bd->blk_size>>BLK_SIZE_BITS;
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if (dv->size<cnt)
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dv->size=cnt;
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d->filename=in_name2;
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d->dvd_bd=bd;
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d->buf0=MAlloc(COPY_BUF_BLKS<<BLK_SIZE_BITS);
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d->buf1=MAlloc(COPY_BUF_BLKS<<BLK_SIZE_BITS);
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d->cnt=cnt;
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task=Spawn(&DVDImageWriteTask,d,"Write CD/DVD");
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while (d->in_buf<=d->out_buf)
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Yield;
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BlkDevLock(bd);
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ATAPIWaitReady(bd,0);
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progress1=0; progress1_max=cnt;
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StrCpy(progress1_desc,"Writing");
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while (cnt>0) {
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if (cnt>COPY_BUF_BLKS)
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n=COPY_BUF_BLKS;
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else
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n=cnt;
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if (n>bd->max_writes)
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n=bd->max_writes;
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if (d->out_buf&1)
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buf=d->buf1;
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else
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buf=d->buf0;
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while (d->in_buf<=d->out_buf)
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Yield;
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ATAPIWriteBlks(bd,buf,blk/spc,(n+spc-1)/spc);
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d->out_buf++;
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cnt-=n;
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blk+=n;
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progress1+=n;
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}
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ATAPISync(bd);
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progress1=0; progress1_max=2;
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StrCpy(progress1_desc,"Closing");
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for (i=0;i<2;i++) {
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ATAPIClose(bd,0x100,i); //Close tracks
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progress1++;
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}
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ATAPISync(bd);
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ATAPIClose(bd,0x200); //close disk
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ATAPISync(bd);
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if (media_type==MT_DVD) {
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ATAPIClose(bd,0x300);
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ATAPISync(bd);
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}
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*progress1_desc=0;
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progress1=progress1_max=0;
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bd->flags&=~BDF_READ_ONLY_OVERRIDE;
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BlkDevUnlock(bd);
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Free(d->buf0);
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Free(d->buf1);
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Free(in_name2);
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Free(in_name3);
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Free(d);
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}
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