* Added a big fat warning on members of filter_t and decoder_t.

include/vlc_codec.h

@@ -38,6 +38,11 @@ typedef struct decoder_owner_sys_t decoder_owner_sys_t;
  * @{
  */
 
+/*
+ * BIG FAT WARNING : the code relies in the first 4 members of filter_t
+ * and decoder_t to be the same, so if you have anything to add, do it
+ * at the end of the structure.
+ */
 struct decoder_t
 {
     VLC_COMMON_MEMBERS

include/vlc_filter.h

@@ -37,6 +37,12 @@ typedef struct filter_owner_sys_t filter_owner_sys_t;
  *
  * @{
  */
+
+/*
+ * BIG FAT WARNING : the code relies in the first 4 members of filter_t
+ * and decoder_t to be the same, so if you have anything to add, do it
+ * at the end of the structure.
+ */
 struct filter_t
 {
     VLC_COMMON_MEMBERS