9369d4867d
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@6367 a1c6a512-1295-4272-9138-f99709370657
97 lines
3.4 KiB
C
97 lines
3.4 KiB
C
#include "searchengine.h"
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#include "dbinterface.h"
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#undef SONGENTRY_SIZE
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#undef FILEENTRY_SIZE
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#undef ALBUMENTRY_SIZE
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#undef ARTISTENTRY_SIZE
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#undef FILERECORD2OFFSET
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#define SONGENTRY_SIZE (rb->tagdbheader->songlen+12+rb->tagdbheader->genrelen+4)
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#define FILEENTRY_SIZE (rb->tagdbheader->filelen+12)
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#define ALBUMENTRY_SIZE (rb->tagdbheader->albumlen+4+rb->tagdbheader->songarraylen*4)
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#define ARTISTENTRY_SIZE (rb->tagdbheader->artistlen+rb->tagdbheader->albumarraylen*4)
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#define FILERECORD2OFFSET(_x_) (rb->tagdbheader->filestart + _x_ * FILEENTRY_SIZE)
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struct entry *currententry;
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static struct entry *entryarray;
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int database_init() {
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char *p;
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unsigned int i;
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// allocate room for all entries
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entryarray=(struct entry *)my_malloc(sizeof(struct entry)*rb->tagdbheader->filecount);
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p=(char *)entryarray;
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// zero all entries.
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for(i=0;i<sizeof(struct entry)*rb->tagdbheader->filecount;i++)
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*(p++)=0;
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if(*rb->tagdb_initialized!=1) {
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if(!rb->tagdb_init()) {
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// failed loading db
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return -1;
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}
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}
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return 0;
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}
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void loadentry(int filerecord) {
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if(entryarray[filerecord].loadedfiledata==0) {
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rb->lseek(*rb->tagdb_fd,FILERECORD2OFFSET(filerecord),SEEK_SET);
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entryarray[filerecord].filename=(char *)my_malloc(rb->tagdbheader->filelen);
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rb->read(*rb->tagdb_fd,entryarray[filerecord].filename,rb->tagdbheader->filelen);
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rb->read(*rb->tagdb_fd,&entryarray[filerecord].hash,4);
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rb->read(*rb->tagdb_fd,&entryarray[filerecord].songentry,4);
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rb->read(*rb->tagdb_fd,&entryarray[filerecord].rundbentry,4);
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entryarray[filerecord].loadedfiledata=1;
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}
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currententry=&entryarray[filerecord];
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}
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void loadsongdata() {
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if(currententry->loadedsongdata ||
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!currententry->loadedfiledata)
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return;
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currententry->title=(char *)my_malloc(rb->tagdbheader->songlen);
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currententry->genre=(char *)my_malloc(rb->tagdbheader->genrelen);
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rb->lseek(*rb->tagdb_fd,currententry->songentry,SEEK_SET);
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rb->read(*rb->tagdb_fd,currententry->title,rb->tagdbheader->songlen);
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rb->read(*rb->tagdb_fd,¤tentry->artistoffset,4);
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rb->read(*rb->tagdb_fd,¤tentry->albumoffset,4);
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rb->lseek(*rb->tagdb_fd,4,SEEK_CUR);
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rb->read(*rb->tagdb_fd,currententry->genre,rb->tagdbheader->genrelen);
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rb->read(*rb->tagdb_fd,¤tentry->bitrate,2);
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rb->read(*rb->tagdb_fd,¤tentry->year,2);
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currententry->loadedsongdata=1;
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}
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void loadrundbdata() {
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// we don't do this yet.
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currententry->loadedrundbdata=1;
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}
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void loadartistname() {
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/* memory optimization possible, only malloc for an album name once, then
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* write that pointer to the entrys using it.
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*/
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currententry->artistname=(char *)my_malloc(rb->tagdbheader->artistlen);
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rb->lseek(*rb->tagdb_fd,currententry->artistoffset,SEEK_SET);
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rb->read(*rb->tagdb_fd,currententry->artistname,rb->tagdbheader->artistlen);
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currententry->loadedartistname=1;
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}
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void loadalbumname() {
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/* see the note at loadartistname */
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currententry->albumname=(char *)my_malloc(rb->tagdbheader->albumlen);
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rb->lseek(*rb->tagdb_fd,currententry->albumoffset,SEEK_SET);
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rb->read(*rb->tagdb_fd,currententry->albumname,rb->tagdbheader->albumlen);
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currententry->loadedalbumname=1;
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}
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char *getfilename(int entry) {
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if(entryarray[entry].loadedfiledata==0)
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return "error O.o;;;";
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else
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return entryarray[entry].filename;
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}
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