From: Luca Barbato <lu_zero@gentoo.org>
Date: Thu, 10 Sep 2015 03:02:47 +0000 (+0200)
Subject: pixdesc: Document the component order
X-Git-Tag: android-x86-7.1-r1~252^2~2024
X-Git-Url: http://git.osdn.net/view?a=commitdiff_plain;h=7b02cb29d9d60cdd5ef321043d11d02023e7dc8f;p=android-x86%2Fexternal-ffmpeg.git

pixdesc: Document the component order
---

diff --git a/libavutil/pixdesc.h b/libavutil/pixdesc.h
index ea84fd3c08..fe06d94f56 100644
--- a/libavutil/pixdesc.h
+++ b/libavutil/pixdesc.h
@@ -108,6 +108,13 @@ typedef struct AVPixFmtDescriptor {
      * Parameters that describe how pixels are packed. If the format
      * has chroma components, they must be stored in comp[1] and
      * comp[2].
+     * If the format is RGB-like, the first component is R, followed
+     * by G and B.
+     *
+     * If the format is YUV-like, the first component is Y, followed
+     * by U and V.
+     *
+     * If present, the Alpha channel is always the last component.
      */
     AVComponentDescriptor comp[4];