Simplify mpegplayer a bit and use array-based lists rather than linked lists for stream management. Move a couple useful functions to handle pointer arrays from kernel.c into general.c; mpeglayer now makes use of them.

git-svn-id: svn://svn.rockbox.org/rockbox/trunk@26101 a1c6a512-1295-4272-9138-f99709370657

apps/plugins/mpegplayer/stream_thread.h

@@ -39,7 +39,6 @@ struct stream_hdr
         off_t pos;         /* Start/current position for random-access read */
     };
     off_t limit;           /* Limit for random-access read */
-    struct list_item nf;   /* List for data notification */
 };
 
 struct stream
@@ -48,8 +47,6 @@ struct stream
     unsigned int thread;         /* Stream's thread */
     uint8_t* curr_packet;        /* Current stream packet beginning */
     uint8_t* curr_packet_end;    /* Current stream packet end */
-    struct list_item l;          /* List of streams - either reserve pool
-                                    or active pool */
     int      state;              /* State machine parsing mode */
     uint32_t start_pts;          /* First timestamp for stream */
     uint32_t end_pts;            /* Last timestamp for stream */
@@ -58,6 +55,8 @@ struct stream
     unsigned id;                 /* Stream identifier */
 };
 
+#define STR_FROM_HDR(sh) ((struct stream *)(sh))
+
 /* Make sure there there is always enough data buffered ahead for
  * the worst possible case - regardless of whether a valid stream
  * would actually produce that */
@@ -145,8 +144,6 @@ enum stream_status
     STREAM_NOT_FOUND,           /* Match not found */
 };
 
-#define STR_FROM_HEADER(sh) ((struct stream *)(sh))
-
 /* Clip time to range for a particular stream */
 static inline uint32_t clip_time(struct stream *str, uint32_t time)
 {