From patchwork Sun Apr 12 12:05:02 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Dafna Hirschfeld X-Patchwork-Id: 210227 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=-9.7 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH, MAILING_LIST_MULTI, SIGNED_OFF_BY, SPF_HELO_NONE, SPF_PASS, UNPARSEABLE_RELAY,USER_AGENT_GIT autolearn=ham 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 CC77CC2BBFD for ; Sun, 12 Apr 2020 12:05:16 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id A779420708 for ; Sun, 12 Apr 2020 12:05:16 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727016AbgDLMFP (ORCPT ); Sun, 12 Apr 2020 08:05:15 -0400 Received: from bhuna.collabora.co.uk ([46.235.227.227]:37300 "EHLO bhuna.collabora.co.uk" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726805AbgDLMFP (ORCPT ); Sun, 12 Apr 2020 08:05:15 -0400 Received: from [127.0.0.1] (localhost [127.0.0.1]) (Authenticated sender: dafna) with ESMTPSA id 25E4E2A079A From: Dafna Hirschfeld To: linux-media@vger.kernel.org, dafna.hirschfeld@collabora.com, helen.koike@collabora.com, ezequiel@collabora.com, hverkuil@xs4all.nl, kernel@collabora.com, dafna3@gmail.com, laurent.pinchart@ideasonboard.com, linux-rockchip@lists.infradead.org, sakari.ailus@linux.intel.com Subject: [PATCH v2 2/4] media: staging: rkisp1: rsz: remove redundant if statement and add inline doc Date: Sun, 12 Apr 2020 14:05:02 +0200 Message-Id: <20200412120504.6536-3-dafna.hirschfeld@collabora.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20200412120504.6536-1-dafna.hirschfeld@collabora.com> References: <20200412120504.6536-1-dafna.hirschfeld@collabora.com> Sender: linux-media-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-media@vger.kernel.org The statement "if (rsz->fmt_type == V4L2_PIXEL_ENC_YUV)" can be removed since the value of rsz->fmt_type is either V4L2_PIXEL_ENC_YUV or V4L2_PIXEL_ENC_BAYER and the function returns if it is bayer. In addition some doc with clarification is added. Signed-off-by: Dafna Hirschfeld --- drivers/staging/media/rkisp1/rkisp1-resizer.c | 19 +++++++++++++------ 1 file changed, 13 insertions(+), 6 deletions(-) diff --git a/drivers/staging/media/rkisp1/rkisp1-resizer.c b/drivers/staging/media/rkisp1/rkisp1-resizer.c index 84f23a91b0a0..c28919b9af44 100644 --- a/drivers/staging/media/rkisp1/rkisp1-resizer.c +++ b/drivers/staging/media/rkisp1/rkisp1-resizer.c @@ -365,12 +365,17 @@ static void rkisp1_rsz_config(struct rkisp1_resizer *rsz, struct v4l2_rect sink_y, sink_c, src_y, src_c; struct v4l2_mbus_framefmt *src_fmt; struct v4l2_rect *sink_crop; + struct rkisp1_capture *cap = &rsz->rkisp1->capture_devs[rsz->id]; sink_crop = rkisp1_rsz_get_pad_crop(rsz, NULL, RKISP1_RSZ_PAD_SINK, V4L2_SUBDEV_FORMAT_ACTIVE); src_fmt = rkisp1_rsz_get_pad_fmt(rsz, NULL, RKISP1_RSZ_PAD_SRC, V4L2_SUBDEV_FORMAT_ACTIVE); + /* + * The resizer only works on yuv formats, + * so return if it is bayer format. + */ if (rsz->pixel_enc == V4L2_PIXEL_ENC_BAYER) { rkisp1_rsz_disable(rsz, when); return; @@ -384,13 +389,15 @@ static void rkisp1_rsz_config(struct rkisp1_resizer *rsz, sink_c.width = sink_y.width / RKISP1_MBUS_FMT_HDIV; sink_c.height = sink_y.height / RKISP1_MBUS_FMT_VDIV; - if (rsz->pixel_enc == V4L2_PIXEL_ENC_YUV) { - struct rkisp1_capture *cap = - &rsz->rkisp1->capture_devs[rsz->id]; + /* + * The resizer is used not only to change the dimensions of the frame + * but also to change the scale for YUV formats, + * (4:2:2 -> 4:2:0 for example). So the width/height of the CbCr + * streams should be set according to the pixel format in the capture. + */ + hdiv = cap->pix.info->hdiv; + vdiv = cap->pix.info->vdiv; - hdiv = cap->pix.info->hdiv; - vdiv = cap->pix.info->vdiv; - } src_c.width = src_y.width / hdiv; src_c.height = src_y.height / vdiv;