Add note about big vs. little endian.

git-svn-id: file:///var/local/repositories/ffmpeg/trunk@17525 9553f0bf-9b14-0410-a0b8-cfaf0461ba5b

diff --git a/libavutil/avutil.h b/libavutil/avutil.h
index 176c6d0de02310bdd4258e3f007dd72bde9012c6..6dd1eb79382b212f8b7039ae260230440a744e3d 100644 (file)
--- a/libavutil/avutil.h
+++ b/libavutil/avutil.h
@@ -80,6 +80,10 @@ unsigned avutil_version(void);
  * For all the 8bit per pixel formats, an RGB32 palette is in data[1] like
  * for pal8. This palette is filled in automatically by the function
  * allocating the picture.
+ *
+ * Note, make sure that all newly added big endian formats have pix_fmt&1==1
+ *       and that all newly added little endian formats have pix_fmt&1==0
+ *       this allows simpler detection of big vs little endian.
  */
 enum PixelFormat {
     PIX_FMT_NONE= -1,