Better handling of next/prev

git-svn-id: svn://svn.rockbox.org/rockbox/trunk@3528 a1c6a512-1295-4272-9138-f99709370657

apps/playlist.c

@@ -378,6 +378,14 @@ int playlist_next(int steps)
     return index;
 }
 
+/* Returns false if 'steps' is out of bounds, else true */
+bool playlist_check(int steps)
+{
+    bool queue;
+    int index = get_next_index(steps, &queue);
+    return (index >= 0);
+}
+
 char* playlist_peek(int steps)
 {
     int seek;

apps/playlist.h

@@ -55,6 +55,7 @@ int play_list(char *dir, char *file, int start_index,
 char* playlist_peek(int steps);
 char* playlist_name(char *name, int name_size);
 int playlist_next(int steps);
+bool playlist_check(int steps);
 void randomise_playlist( unsigned int seed );
 void sort_playlist(bool start_current);
 void add_indices_to_playlist(void);

apps/wps.c

@@ -915,7 +915,6 @@ int wps_show(void)
                      break; 
 #endif
                 if (!id3 || (id3->elapsed < 3*1000)) {
-                    mpeg_stop();
                     mpeg_prev();
                 }
                 else {
@@ -935,7 +934,6 @@ int wps_show(void)
                 if ( lastbutton != BUTTON_RIGHT )   
                      break; 
 #endif
-                mpeg_stop();
                 mpeg_next();
                 break;
 

firmware/mpeg.c

@@ -77,6 +77,7 @@ static enum
 #endif
 
 extern char* playlist_peek(int steps);
+extern bool playlist_check(int steps);
 extern int playlist_next(int steps);
 extern int playlist_amount(void);
 extern void update_file_pos( int id, int pos );
@@ -1415,7 +1416,7 @@ static void mpeg_thread(void)
                     }
                 }
                 else {
-                    if (!playlist_peek(1))
+                    if (!playlist_check(1))
                         break;
 
                     /* stop the current stream */
@@ -1450,8 +1451,10 @@ static void mpeg_thread(void)
 
             case MPEG_PREV: {
                 DEBUGF("MPEG_PREV\n");
-                if (!playlist_peek(-1))
+
+                if (!playlist_check(-1))
                     break;
+                
                 /* stop the current stream */
                 play_pending = false;
                 playing = false;