From patchwork Mon Jan 25 14:10:29 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Helen Koike X-Patchwork-Id: 12047951 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-16.8 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 8AE00C10F0B for ; Tue, 26 Jan 2021 19:22:54 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 68A1422B37 for ; Tue, 26 Jan 2021 19:22:54 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2388686AbhAZFp0 (ORCPT ); Tue, 26 Jan 2021 00:45:26 -0500 Received: from bhuna.collabora.co.uk ([46.235.227.227]:59352 "EHLO bhuna.collabora.co.uk" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1729286AbhAYOLy (ORCPT ); Mon, 25 Jan 2021 09:11:54 -0500 Received: from floko.floko.floko (unknown [IPv6:2804:214:81d7:a6cc:f83c:66c3:4225:e59d]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) (Authenticated sender: koike) by bhuna.collabora.co.uk (Postfix) with ESMTPSA id 09F2E1F452C0; Mon, 25 Jan 2021 14:10:37 +0000 (GMT) From: Helen Koike To: linux-media@vger.kernel.org Cc: hverkuil@xs4all.nl, hans.verkuil@cisco.com, laurent.pinchart@ideasonboard.com, kernel@collabora.com, linux-kernel@vger.kernel.org Subject: [PATCH v2] media: doc: pixfmt-yuv: Fix 4:4:4 subsampling info Date: Mon, 25 Jan 2021 11:10:29 -0300 Message-Id: <20210125141029.16481-1-helen.koike@collabora.com> X-Mailer: git-send-email 2.30.0 MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-media@vger.kernel.org YUV 4:4:4 is not subsampled, fix this in the docs. Fixes: da785536e007 ("media: doc: pixfmt-yuv: Move all semi-planar YUV formats to common file") Signed-off-by: Helen Koike --- Changes in v2: - s/No sub-sampling/The chroma plane is not subsampled/ (Laurent) - Fixed description regarding the number of bytes (Laurent) --- Documentation/userspace-api/media/v4l/pixfmt-yuv-planar.rst | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) diff --git a/Documentation/userspace-api/media/v4l/pixfmt-yuv-planar.rst b/Documentation/userspace-api/media/v4l/pixfmt-yuv-planar.rst index 7d4d39201a3f..1e0db602cc1b 100644 --- a/Documentation/userspace-api/media/v4l/pixfmt-yuv-planar.rst +++ b/Documentation/userspace-api/media/v4l/pixfmt-yuv-planar.rst @@ -396,9 +396,9 @@ number of lines as the luma plane. NV24 and NV42 ------------- -Semi-planar YUV 4:4:4 formats. The chroma plane is subsampled by 2 in the -horizontal direction. Chroma lines contain half the number of pixels and the -same number of bytes as luma lines, and the chroma plane contains the same +Semi-planar YUV 4:4:4 formats. The chroma plane is not subsampled. +Chroma lines contain the same number of pixels and twice the +number of bytes as luma lines, and the chroma plane contains the same number of lines as the luma plane. .. flat-table:: Sample 4x4 NV24 Image