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/***************************************************************************
* __________ __ ___.
* Open \______ \ ____ ____ | | _\_ |__ _______ ___
* Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
* Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
* Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
* \/ \/ \/ \/ \/
* $Id$
*
* Copyright (C) 2005 by Michiel van der Kolk
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
* KIND, either express or implied.
*
****************************************************************************/
#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+12)
#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 RUNDBENTRY_SIZE 20
#define FILERECORD2OFFSET(_x_) (rb->tagdbheader->filestart + _x_ * FILEENTRY_SIZE)
struct dbentry *currententry;
struct dbglobals dbglobal;
static struct dbentry *entryarray;
int database_init() {
char *p;
unsigned int i;
// allocate room for all entries
entryarray=(struct dbentry *)my_malloc(sizeof(struct dbentry)*rb->tagdbheader->filecount);
p=(char *)entryarray;
// zero all entries.
for(i=0;i<sizeof(struct dbentry)*rb->tagdbheader->filecount;i++)
*(p++)=0;
if(!*rb->tagdb_initialized) {
if(!rb->tagdb_init()) {
// failed loading db
return -1;
}
}
dbglobal.playcountmin=0;
dbglobal.playcountmax=0;
dbglobal.gotplaycountlimits=0;
return 0;
}
long readlong(int fd) {
long num;
rb->read(fd,&num,4);
#ifdef ROCKBOX_LITTLE_ENDIAN
num=BE32(num);
#endif
return num;
}
short readshort(int fd) {
short num;
rb->read(fd,&num,2);
#ifdef ROCKBOX_LITTLE_ENDIAN
num=BE16(num);
#endif
return num;
}
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);
entryarray[filerecord].hash=readlong(*rb->tagdb_fd);
entryarray[filerecord].songentry=readlong(*rb->tagdb_fd);
entryarray[filerecord].rundbentry=readlong(*rb->tagdb_fd);
entryarray[filerecord].loadedfiledata=1;
}
currententry=&entryarray[filerecord];
dbglobal.currententryindex=filerecord;
}
void loadsongdata() {
if(currententry->loadedsongdata)
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);
currententry->artistoffset=readlong(*rb->tagdb_fd);
currententry->albumoffset=readlong(*rb->tagdb_fd);
rb->lseek(*rb->tagdb_fd,4,SEEK_CUR);
rb->read(*rb->tagdb_fd,currententry->genre,rb->tagdbheader->genrelen);
currententry->bitrate=readshort(*rb->tagdb_fd);
currententry->year=readshort(*rb->tagdb_fd);
currententry->playtime=readlong(*rb->tagdb_fd);
currententry->track=readshort(*rb->tagdb_fd);
currententry->samplerate=readshort(*rb->tagdb_fd);
currententry->loadedsongdata=1;
}
void loadrundbdata() {
currententry->loadedrundbdata=1;
if(!*rb->rundb_initialized)
return;
if(currententry->rundbentry==-1)
return;
rb->lseek(*rb->rundb_fd,currententry->rundbentry,SEEK_SET);
currententry->rundbfe=readlong(*rb->rundb_fd);
currententry->rundbhash=readlong(*rb->rundb_fd);
currententry->rating=readshort(*rb->rundb_fd);
currententry->voladj=readshort(*rb->rundb_fd);
currententry->playcount=readlong(*rb->rundb_fd);
currententry->lastplayed=readlong(*rb->rundb_fd);
}
void loadartistname() {
/* memory optimization possible, only malloc for an album name once, then
* write that pointer to the entrys using it.
*/
if(currententry->loadedartistname)
return;
loadsongdata();
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 */
if(currententry->loadedalbumname)
return;
loadsongdata();
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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