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/***************************************************************************
* __________ __ ___.
* Open \______ \ ____ ____ | | _\_ |__ _______ ___
* Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
* Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
* Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
* \/ \/ \/ \/ \/
* $Id
*
* Copyright (C) 2005 by Michiel van der Kolk
*
* All files in this archive are subject to the GNU General Public License.
* See the file COPYING in the source tree root for full license agreement.
*
* This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
* KIND, either express or implied.
*
****************************************************************************/
#define _GNU_SOURCE
#include <stdio.h>
#include <string.h>
#include "file.h"
#include "screens.h"
#include "kernel.h"
#include "tree.h"
#include "lcd.h"
#include "font.h"
#include "settings.h"
#include "icons.h"
#include "status.h"
#include "debug.h"
#include "button.h"
#include "menu.h"
#include "main_menu.h"
#include "mpeg.h"
#include "misc.h"
#include "ata.h"
#include "wps.h"
#include "filetypes.h"
#include "applimits.h"
#include "icons.h"
#include "lang.h"
#include "keyboard.h"
#include "database.h"
#include "autoconf.h"
#undef NEW_DB_CODE
#ifdef NEW_DB_CODE
static char sbuf[1024];
static struct file_entry fe;
static int currentfeoffset, currentferecord;
#endif
int tagdb_fd = -1;
int tagdb_initialized = 0;
struct tagdb_header tagdbheader;
int tagdb_init(void)
{
unsigned char* ptr = (char*)&tagdbheader.version;
#ifdef ROCKBOX_LITTLE_ENDIAN
int i, *p;
#endif
tagdb_fd = open(ROCKBOX_DIR "/rockbox.id3db", O_RDONLY);
if (tagdb_fd < 0) {
DEBUGF("Failed opening database\n");
return -1;
}
read(tagdb_fd, &tagdbheader, 68);
if (ptr[0] != 'R' ||
ptr[1] != 'D' ||
ptr[2] != 'B')
{
splash(HZ,true,"Not a rockbox ID3 database!");
return -1;
}
#ifdef ROCKBOX_LITTLE_ENDIAN
p=(int *)&tagdbheader;
for(i=0;i<17;i++) {
*p=BE32(*p);
p++;
}
#endif
if ( (tagdbheader.version&0xFF) != TAGDB_VERSION)
{
splash(HZ,true,"Unsupported database version %d!", tagdbheader.version&0xFF);
return -1;
}
if (tagdbheader.songstart > tagdbheader.filestart ||
tagdbheader.albumstart > tagdbheader.songstart ||
tagdbheader.artiststart > tagdbheader.albumstart)
{
splash(HZ,true,"Corrupt ID3 database!");
return -1;
}
tagdb_initialized = 1;
return 0;
}
void tagdb_shutdown(void)
{
if (tagdb_fd >= 0)
close(tagdb_fd);
tagdb_initialized = 0;
}
/* NOTE: All these functions below are yet untested. */
#ifdef NEW_DB_CODE
/*** TagDatabase code ***/
void writetagdbheader() {
lseek(tagdb_fd,0,SEEK_SET);
write(tagdb_fd, &tagdbheader, 68);
}
void getfentrybyoffset(int offset) {
lseek(tagdb_fd,offset,SEEK_SET);
fread(tagdb_fd,sbuf,tagdbheader.filelen);
fread(tagdb_fd,&fe+sizeof(char *),12);
fe.name=sbuf;
currentfeoffset=offset;
currentferecord=(offset-tagdbheader.filestart)/FILEENTRY_SIZE;
}
#define getfentrybyrecord(_x_) getfentrybyoffset(FILERECORD2OFFSET(_x_))
int getfentrybyfilename(char *fname) {
int min=0;
int max=tagdbheader.filecount;
while(min<max) {
int mid=(min+max)/2;
int compare;
getfentrybyrecord(mid);
compare=strcasecmp(fname,fe.name));
if(compare==0)
return 1;
else if(compare<0)
max=mid;
else
min=mid+1;
}
return 0;
}
int getfentrybyhash(int hash) {
int min=0;
for(min=0;min<tagdbheader.filecount;min++) {
getfentrybyrecord(min);
if(hash==fe.hash)
return 1;
}
return 0;
}
int deletefentry(char *fname) {
if(!getfentrybyfilename(fname))
return 0;
int restrecord = currentferecord+1;
if(currentferecord!=tagdbheader.filecount) /* file is not last entry */
shiftdown(FILERECORD2OFFSET(currentferecord),FILERECORD2OFFSET(restrecord),(tagdbheader.filecount-restrecord)*FILEENTRY_SIZE);
ftruncate(tagdb_fd,lseek(tagdb_fd,0,SEEK_END)-FILEENTRY_SIZE);
tagdbheader.filecount--;
update_fentryoffsets(restrecord,tagdbheader.filecount);
writetagdbheader();
return 1;
}
int update_fentryoffsets(int start, int end) {
int i;
for(int i=start;i<end;i++) {
getfentrybyrecord(i);
if(fe.songentry!=-1) {
int p;
lseek(tagdb_fd,fe.songentry+tagdbheader.songlen+8,SEEK_SET);
read(tagdb_fd,&p,sizeof(int));
if(p!=currentfeoffset) {
p=currentfeoffset;
lseek(tagdb_fd,fe.songentry+tagdbheader.songlen+8,SEEK_SET);
write(tagdb_fd,&p,sizeof(int));
}
}
if(fe.rundbentry!=-1) {
splash(HZ*2, "o.o.. found a rundbentry? o.o; didn't update it, update the code o.o;");
}
}
}
int tagdb_shiftdown(int targetoffset, int startingoffset, int bytes) {
int amount;
if(targetoffset>=startingoffset) {
splash(HZ*2,"Woah. no beeping way. (tagdb_shiftdown)");
return 0;
}
lseek(tagdb_fd,startingoffset,SEEK_SET);
while(amount=read(tagdb_fd,sbuf,bytes > 1024 ? 1024 : bytes)) {
int written;
startingoffset+=amount;
lseek(tagdb_fd,targetoffset,SEEK_SET);
written=write(tagdb_fd,sbuf,amount);
targetoffset+=written;
if(amount!=written) {
splash(HZ*2,"Something went very wrong. expect database corruption. (tagdb_shiftdown)");
return 0;
}
lseek(tagdb_fd,startingoffset,SEEK_SET);
bytes-=amount;
}
return 1;
}
int tagdb_shiftup(int targetoffset, int startingoffset, int bytes) {
int amount,amount2;
int readpos,writepos,filelen;
int ok;
if(targetoffset<=startingoffset) {
splash(HZ*2,"Um. no. (tagdb_shiftup)");
return 0;
}
filelen=lseek(tagdb_fd,0,SEEK_END);
readpos=startingoffset+bytes;
do {
amount=bytes>1024 ? 1024 : bytes;
readpos-=amount;
writepos=readpos+targetoffset-startingoffset;
lseek(tagdb_fd,readpos,SEEK_SET);
amount2=read(tagdb_fd,sbuf,amount);
if(amount2!=amount) {
splash(HZ*2,"Something went very wrong. expect database corruption. (tagdb_shiftup)");
return 0;
}
lseek(tagdb_fd,writepos,SEEK_SET);
amount=write(tagdb_fd,sbuf,amount2);
if(amount2!=amount) {
splash(HZ*2,"Something went very wrong. expect database corruption. (tagdb_shiftup)");
return 0;
}
bytes-=amount;
} while (amount>0);
if(bytes==0)
return 1;
else {
splash(HZ*2,"Something went wrong, >.>;; (tagdb_shiftup)");
return 0;
}
}
/*** end TagDatabase code ***/
/*** RuntimeDatabase code ***/
/*** end RuntimeDatabase code ***/
#endif
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