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

1 files changed, 15 insertions, 0 deletions

diff --git a/firmware/export/general.h b/firmware/export/general.h
index 8da4a0ad59..16c824086b 100644
--- a/firmware/export/general.h
+++ b/firmware/export/general.h
@@ -72,4 +72,19 @@ char *create_datetime_filename(char *buffer, const char *path,
                                bool unique_time);
 #endif /* CONFIG_RTC */
 
+/***
+ ** Compacted pointer lists
+ **
+ ** N-length list requires N+1 elements to ensure NULL-termination.
+ **/
+
+/* Find a pointer in a pointer array. Returns the addess of the element if
+   found or the address of the terminating NULL otherwise. This can be used
+   to bounds check and add items. */
+void ** find_array_ptr(void **arr, void *ptr);
+
+/* Remove a pointer from a pointer array if it exists. Compacts it so that
+   no gaps exist. Returns 0 on success and -1 if the element wasn't found. */
+int remove_array_ptr(void **arr, void *ptr);
+
 #endif /* GENERAL_H */