Michiel Van Der Kolk | 4350eec | 2005-04-28 14:06:20 +0000 | [diff] [blame] | 1 | /*************************************************************************** |
| 2 | * __________ __ ___. |
| 3 | * Open \______ \ ____ ____ | | _\_ |__ _______ ___ |
| 4 | * Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ / |
| 5 | * Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < < |
| 6 | * Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \ |
| 7 | * \/ \/ \/ \/ \/ |
| 8 | * $Id$ |
| 9 | * |
| 10 | * Copyright (C) 2005 by Michiel van der Kolk |
| 11 | * |
| 12 | * All files in this archive are subject to the GNU General Public License. |
| 13 | * See the file COPYING in the source tree root for full license agreement. |
| 14 | * |
| 15 | * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY |
| 16 | * KIND, either express or implied. |
| 17 | * |
| 18 | ****************************************************************************/ |
Michiel Van Der Kolk | 9369d48 | 2005-04-28 12:33:38 +0000 | [diff] [blame] | 19 | #include "searchengine.h" |
| 20 | #include "dbinterface.h" |
| 21 | |
| 22 | #undef SONGENTRY_SIZE |
| 23 | #undef FILEENTRY_SIZE |
| 24 | #undef ALBUMENTRY_SIZE |
| 25 | #undef ARTISTENTRY_SIZE |
| 26 | #undef FILERECORD2OFFSET |
| 27 | |
| 28 | #define SONGENTRY_SIZE (rb->tagdbheader->songlen+12+rb->tagdbheader->genrelen+4) |
| 29 | #define FILEENTRY_SIZE (rb->tagdbheader->filelen+12) |
| 30 | #define ALBUMENTRY_SIZE (rb->tagdbheader->albumlen+4+rb->tagdbheader->songarraylen*4) |
| 31 | #define ARTISTENTRY_SIZE (rb->tagdbheader->artistlen+rb->tagdbheader->albumarraylen*4) |
| 32 | |
| 33 | #define FILERECORD2OFFSET(_x_) (rb->tagdbheader->filestart + _x_ * FILEENTRY_SIZE) |
| 34 | |
| 35 | struct entry *currententry; |
| 36 | |
| 37 | static struct entry *entryarray; |
| 38 | |
| 39 | int database_init() { |
| 40 | char *p; |
| 41 | unsigned int i; |
| 42 | // allocate room for all entries |
| 43 | entryarray=(struct entry *)my_malloc(sizeof(struct entry)*rb->tagdbheader->filecount); |
| 44 | p=(char *)entryarray; |
| 45 | // zero all entries. |
| 46 | for(i=0;i<sizeof(struct entry)*rb->tagdbheader->filecount;i++) |
| 47 | *(p++)=0; |
| 48 | if(*rb->tagdb_initialized!=1) { |
| 49 | if(!rb->tagdb_init()) { |
| 50 | // failed loading db |
| 51 | return -1; |
| 52 | } |
| 53 | } |
| 54 | return 0; |
| 55 | } |
| 56 | |
Michiel Van Der Kolk | 9ceac0a | 2005-04-28 14:20:23 +0000 | [diff] [blame] | 57 | long readlong(int fd) { |
| 58 | long num; |
| 59 | rb->read(fd,&num,4); |
| 60 | #ifdef ROCKBOX_LITTLE_ENDIAN |
| 61 | num=BE32(num); |
| 62 | #endif |
| 63 | return num; |
| 64 | } |
| 65 | |
| 66 | short readshort(int fd) { |
| 67 | short num; |
| 68 | rb->read(fd,&num,2); |
| 69 | #ifdef ROCKBOX_LITTLE_ENDIAN |
| 70 | num=BE16(num); |
| 71 | #endif |
| 72 | return num; |
| 73 | } |
| 74 | |
| 75 | |
Michiel Van Der Kolk | 9369d48 | 2005-04-28 12:33:38 +0000 | [diff] [blame] | 76 | void loadentry(int filerecord) { |
| 77 | if(entryarray[filerecord].loadedfiledata==0) { |
| 78 | rb->lseek(*rb->tagdb_fd,FILERECORD2OFFSET(filerecord),SEEK_SET); |
| 79 | entryarray[filerecord].filename=(char *)my_malloc(rb->tagdbheader->filelen); |
| 80 | rb->read(*rb->tagdb_fd,entryarray[filerecord].filename,rb->tagdbheader->filelen); |
Michiel Van Der Kolk | 9ceac0a | 2005-04-28 14:20:23 +0000 | [diff] [blame] | 81 | entryarray[filerecord].hash=readlong(*rb->tagdb_fd); |
| 82 | entryarray[filerecord].songentry=readlong(*rb->tagdb_fd); |
| 83 | entryarray[filerecord].rundbentry=readlong(*rb->tagdb_fd); |
Michiel Van Der Kolk | 9369d48 | 2005-04-28 12:33:38 +0000 | [diff] [blame] | 84 | entryarray[filerecord].loadedfiledata=1; |
| 85 | } |
| 86 | currententry=&entryarray[filerecord]; |
| 87 | } |
| 88 | |
| 89 | void loadsongdata() { |
Michiel Van Der Kolk | 238bea7 | 2005-04-28 18:49:23 +0000 | [diff] [blame] | 90 | if(currententry->loadedsongdata) |
Michiel Van Der Kolk | 9369d48 | 2005-04-28 12:33:38 +0000 | [diff] [blame] | 91 | return; |
| 92 | currententry->title=(char *)my_malloc(rb->tagdbheader->songlen); |
| 93 | currententry->genre=(char *)my_malloc(rb->tagdbheader->genrelen); |
| 94 | rb->lseek(*rb->tagdb_fd,currententry->songentry,SEEK_SET); |
| 95 | rb->read(*rb->tagdb_fd,currententry->title,rb->tagdbheader->songlen); |
Michiel Van Der Kolk | 9ceac0a | 2005-04-28 14:20:23 +0000 | [diff] [blame] | 96 | currententry->artistoffset=readlong(*rb->tagdb_fd); |
| 97 | currententry->albumoffset=readlong(*rb->tagdb_fd); |
Michiel Van Der Kolk | 9369d48 | 2005-04-28 12:33:38 +0000 | [diff] [blame] | 98 | rb->lseek(*rb->tagdb_fd,4,SEEK_CUR); |
| 99 | rb->read(*rb->tagdb_fd,currententry->genre,rb->tagdbheader->genrelen); |
Michiel Van Der Kolk | 9ceac0a | 2005-04-28 14:20:23 +0000 | [diff] [blame] | 100 | currententry->bitrate=readshort(*rb->tagdb_fd); |
| 101 | currententry->year=readshort(*rb->tagdb_fd); |
Michiel Van Der Kolk | 9369d48 | 2005-04-28 12:33:38 +0000 | [diff] [blame] | 102 | currententry->loadedsongdata=1; |
| 103 | } |
| 104 | |
| 105 | void loadrundbdata() { |
| 106 | // we don't do this yet. |
| 107 | currententry->loadedrundbdata=1; |
| 108 | } |
| 109 | |
| 110 | void loadartistname() { |
| 111 | /* memory optimization possible, only malloc for an album name once, then |
| 112 | * write that pointer to the entrys using it. |
| 113 | */ |
Michiel Van Der Kolk | 238bea7 | 2005-04-28 18:49:23 +0000 | [diff] [blame] | 114 | if(currententry->loadedartistname) |
| 115 | return; |
| 116 | loadsongdata(); |
Michiel Van Der Kolk | 9369d48 | 2005-04-28 12:33:38 +0000 | [diff] [blame] | 117 | currententry->artistname=(char *)my_malloc(rb->tagdbheader->artistlen); |
| 118 | rb->lseek(*rb->tagdb_fd,currententry->artistoffset,SEEK_SET); |
| 119 | rb->read(*rb->tagdb_fd,currententry->artistname,rb->tagdbheader->artistlen); |
| 120 | currententry->loadedartistname=1; |
| 121 | } |
| 122 | |
| 123 | void loadalbumname() { |
| 124 | /* see the note at loadartistname */ |
Michiel Van Der Kolk | 238bea7 | 2005-04-28 18:49:23 +0000 | [diff] [blame] | 125 | if(currententry->loadedalbumname) |
| 126 | return; |
| 127 | loadsongdata(); |
Michiel Van Der Kolk | 9369d48 | 2005-04-28 12:33:38 +0000 | [diff] [blame] | 128 | currententry->albumname=(char *)my_malloc(rb->tagdbheader->albumlen); |
| 129 | rb->lseek(*rb->tagdb_fd,currententry->albumoffset,SEEK_SET); |
| 130 | rb->read(*rb->tagdb_fd,currententry->albumname,rb->tagdbheader->albumlen); |
| 131 | currententry->loadedalbumname=1; |
| 132 | } |
| 133 | |
| 134 | char *getfilename(int entry) { |
| 135 | if(entryarray[entry].loadedfiledata==0) |
| 136 | return "error O.o;;;"; |
| 137 | else |
| 138 | return entryarray[entry].filename; |
| 139 | } |