Autorating should work now. at least. it would. but there is no runtime data to work with (yet)

git-svn-id: svn://svn.rockbox.org/rockbox/trunk@6455 a1c6a512-1295-4272-9138-f99709370657

apps/plugins/searchengine/dbinterface.c

@@ -33,7 +33,7 @@
 #define FILERECORD2OFFSET(_x_) (rb->tagdbheader->filestart + _x_ * FILEENTRY_SIZE)
 
 struct entry *currententry;
-
+struct dbglobals dbglobal;
 static struct entry *entryarray;
 
 int database_init() {
@@ -51,6 +51,9 @@ int database_init() {
             return -1;
         }
     }
+    dbglobal.playcountmin=0;
+    dbglobal.playcountmax=0;
+    dbglobal.gotplaycountlimits=0;
     return 0;
 }
 
@@ -84,6 +87,7 @@ void loadentry(int filerecord) {
         entryarray[filerecord].loadedfiledata=1;
     }
     currententry=&entryarray[filerecord];
+    dbglobal.currententryindex=filerecord;
 }
 
 void loadsongdata() {

apps/plugins/searchengine/dbinterface.h

@@ -16,30 +16,38 @@
  * KIND, either express or implied.
  *
  ****************************************************************************/
+struct dbglobals {
+    int playcountmin;
+    int playcountmax;
+    int gotplaycountlimits;
+    int currententryindex;
+};
+
 struct entry {
-   int loadedfiledata,
+    int loadedfiledata,
-       loadedsongdata,
+        loadedsongdata,
-       loadedrundbdata,
+        loadedrundbdata,
-       loadedalbumname,
+        loadedalbumname,
-       loadedartistname;
+        loadedartistname;
-   char *filename;
+    char *filename;
-   long hash;
+    long hash;
-   long songentry;
+    long songentry;
-   long rundbentry;
+    long rundbentry;
-   short year;
+    short year;
-   short bitrate;
+    short bitrate;
-   long rating;
+    long rating;
-   long playcount;
+    long playcount;
-   char *title;
+    char *title;
-   char *genre;
+    char *genre;
-   long artistoffset;
+    long artistoffset;
-   long albumoffset;
+    long albumoffset;
-   char *artistname;
+    char *artistname;
-   char *albumname;
+    char *albumname;
 };
 
 extern struct entry *currententry;
 extern struct entry *entryarray;
+extern struct dbglobals dbglobal;
 
 int database_init(void);
 void loadentry(int filerecord);

apps/plugins/searchengine/token.c

@@ -57,6 +57,7 @@ char *getstring(struct token *token) {
 
 int getvalue(struct token *token) {
     char buf[200];
+    int index,i;
     switch(token->kind) {
         case TOKEN_NUM:
             return token->intvalue;
@@ -72,8 +73,23 @@ int getvalue(struct token *token) {
                     loadrundbdata();
                     return currententry->playcount;
                 case INTVALUE_AUTORATING:
-                    // todo.
+                    if(!dbglobal.gotplaycountlimits) {
-                    return 0;
+                        index=dbglobal.currententryindex;
+                        dbglobal.playcountmax=0;
+                        dbglobal.playcountmin=0xFFFFFFFF;
+                        for(i=0;i<rb->tagdbheader->filecount;i++) {
+                            loadentry(i);
+                            loadrundbdata();
+                            if(currententry->playcount>dbglobal.playcountmax)
+                                dbglobal.playcountmax=currententry->playcount;
+                            if(currententry->playcount<dbglobal.playcountmin)
+                                dbglobal.playcountmin=currententry->playcount;
+                        }
+                        dbglobal.gotplaycountlimits=1;
+                        loadentry(index);
+                    }
+                    loadrundbdata();
+                    return (currententry->playcount-dbglobal.playcountmin)*10/(dbglobal.playcountmax-dbglobal.playcountmin);
                 default:
                     rb->snprintf(buf,199,"unknown numid intvalue %d",token->intvalue);
                     rb->splash(HZ*2,true,buf);