[FFmpeg-cvslog] avutil/pixfmt: Document chroma plane size for odd resolutions

[Michael Niedermayer]

ffmpeg | branch: release/3.2 | Michael Niedermayer <michael at niedermayer.cc> | Wed Jul 18 22:22:35 2018 +0200| [b130cdb92332f94f9006544f8a47970d85013b46] | committer: Michael Niedermayer

avutil/pixfmt: Document chroma plane size for odd resolutions

Signed-off-by: Michael Niedermayer <michael at niedermayer.cc>
(cherry picked from commit be0b77e6e83b61c2da338201b5ddfae1c9acedc5)
Signed-off-by: Michael Niedermayer <michael at niedermayer.cc>

> http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=b130cdb92332f94f9006544f8a47970d85013b46
---

 libavutil/pixfmt.h | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/libavutil/pixfmt.h b/libavutil/pixfmt.h
index 7a3f68be7e..2b8f8129eb 100644
--- a/libavutil/pixfmt.h
+++ b/libavutil/pixfmt.h
@@ -42,6 +42,10 @@
  * This is stored as BGRA on little-endian CPU architectures and ARGB on
  * big-endian CPUs.
  *
+ * @note
+ * If the resolution is not a multiple of the chroma subsampling factor
+ * then the chroma plane resolution must be rounded up.
+ *
  * @par
  * When the pixel format is palettized RGB32 (AV_PIX_FMT_PAL8), the palettized
  * image data is stored in AVFrame.data[0]. The palette is transported in