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#include "searchengine.h"
#include "dbinterface.h"
#undef SONGENTRY_SIZE
#undef FILEENTRY_SIZE
#undef ALBUMENTRY_SIZE
#undef ARTISTENTRY_SIZE
#undef FILERECORD2OFFSET
#define SONGENTRY_SIZE (rb->tagdbheader->songlen+12+rb->tagdbheader->genrelen+4)
#define FILEENTRY_SIZE (rb->tagdbheader->filelen+12)
#define ALBUMENTRY_SIZE (rb->tagdbheader->albumlen+4+rb->tagdbheader->songarraylen*4)
#define ARTISTENTRY_SIZE (rb->tagdbheader->artistlen+rb->tagdbheader->albumarraylen*4)
#define FILERECORD2OFFSET(_x_) (rb->tagdbheader->filestart + _x_ * FILEENTRY_SIZE)
struct entry *currententry;
static struct entry *entryarray;
int database_init() {
char *p;
unsigned int i;
// allocate room for all entries
entryarray=(struct entry *)my_malloc(sizeof(struct entry)*rb->tagdbheader->filecount);
p=(char *)entryarray;
// zero all entries.
for(i=0;i<sizeof(struct entry)*rb->tagdbheader->filecount;i++)
*(p++)=0;
if(*rb->tagdb_initialized!=1) {
if(!rb->tagdb_init()) {
// failed loading db
return -1;
}
}
return 0;
}
void loadentry(int filerecord) {
if(entryarray[filerecord].loadedfiledata==0) {
rb->lseek(*rb->tagdb_fd,FILERECORD2OFFSET(filerecord),SEEK_SET);
entryarray[filerecord].filename=(char *)my_malloc(rb->tagdbheader->filelen);
rb->read(*rb->tagdb_fd,entryarray[filerecord].filename,rb->tagdbheader->filelen);
rb->read(*rb->tagdb_fd,&entryarray[filerecord].hash,4);
rb->read(*rb->tagdb_fd,&entryarray[filerecord].songentry,4);
rb->read(*rb->tagdb_fd,&entryarray[filerecord].rundbentry,4);
entryarray[filerecord].loadedfiledata=1;
}
currententry=&entryarray[filerecord];
}
void loadsongdata() {
if(currententry->loadedsongdata ||
!currententry->loadedfiledata)
return;
currententry->title=(char *)my_malloc(rb->tagdbheader->songlen);
currententry->genre=(char *)my_malloc(rb->tagdbheader->genrelen);
rb->lseek(*rb->tagdb_fd,currententry->songentry,SEEK_SET);
rb->read(*rb->tagdb_fd,currententry->title,rb->tagdbheader->songlen);
rb->read(*rb->tagdb_fd,¤tentry->artistoffset,4);
rb->read(*rb->tagdb_fd,¤tentry->albumoffset,4);
rb->lseek(*rb->tagdb_fd,4,SEEK_CUR);
rb->read(*rb->tagdb_fd,currententry->genre,rb->tagdbheader->genrelen);
rb->read(*rb->tagdb_fd,¤tentry->bitrate,2);
rb->read(*rb->tagdb_fd,¤tentry->year,2);
currententry->loadedsongdata=1;
}
void loadrundbdata() {
// we don't do this yet.
currententry->loadedrundbdata=1;
}
void loadartistname() {
/* memory optimization possible, only malloc for an album name once, then
* write that pointer to the entrys using it.
*/
currententry->artistname=(char *)my_malloc(rb->tagdbheader->artistlen);
rb->lseek(*rb->tagdb_fd,currententry->artistoffset,SEEK_SET);
rb->read(*rb->tagdb_fd,currententry->artistname,rb->tagdbheader->artistlen);
currententry->loadedartistname=1;
}
void loadalbumname() {
/* see the note at loadartistname */
currententry->albumname=(char *)my_malloc(rb->tagdbheader->albumlen);
rb->lseek(*rb->tagdb_fd,currententry->albumoffset,SEEK_SET);
rb->read(*rb->tagdb_fd,currententry->albumname,rb->tagdbheader->albumlen);
currententry->loadedalbumname=1;
}
char *getfilename(int entry) {
if(entryarray[entry].loadedfiledata==0)
return "error O.o;;;";
else
return entryarray[entry].filename;
}
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