From patchwork Wed Dec 5 08:36:42 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Paul Kocialkowski X-Patchwork-Id: 10713179 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 2F34A14E2 for ; Wed, 5 Dec 2018 08:37:41 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 1E4F72B73A for ; Wed, 5 Dec 2018 08:37:41 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 127B12C3E3; Wed, 5 Dec 2018 08:37:41 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-5.2 required=2.0 tests=BAYES_00,MAILING_LIST_MULTI, RCVD_IN_DNSWL_MED autolearn=ham version=3.3.1 Received: from gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) (using TLSv1.2 with cipher DHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.wl.linuxfoundation.org (Postfix) with ESMTPS id 9F7A62B73A for ; Wed, 5 Dec 2018 08:37:40 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 219F889CFA; Wed, 5 Dec 2018 08:37:38 +0000 (UTC) X-Original-To: dri-devel@lists.freedesktop.org Delivered-To: dri-devel@lists.freedesktop.org Received: from mail.bootlin.com (mail.bootlin.com [62.4.15.54]) by gabe.freedesktop.org (Postfix) with ESMTP id 081C389FA5 for ; Wed, 5 Dec 2018 08:37:37 +0000 (UTC) Received: by mail.bootlin.com (Postfix, from userid 110) id CF0FA20E22; Wed, 5 Dec 2018 09:37:35 +0100 (CET) Received: from localhost.localdomain (aaubervilliers-681-1-79-44.w90-88.abo.wanadoo.fr [90.88.21.44]) by mail.bootlin.com (Postfix) with ESMTPSA id 7C404207BF; Wed, 5 Dec 2018 09:37:25 +0100 (CET) From: Paul Kocialkowski To: dri-devel@lists.freedesktop.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org Subject: [PATCH v4 01/22] drm/fourcc: Add format info helpers for checking YUV planes disposition Date: Wed, 5 Dec 2018 09:36:42 +0100 Message-Id: <20181205083703.21488-2-paul.kocialkowski@bootlin.com> X-Mailer: git-send-email 2.19.2 In-Reply-To: <20181205083703.21488-1-paul.kocialkowski@bootlin.com> References: <20181205083703.21488-1-paul.kocialkowski@bootlin.com> MIME-Version: 1.0 X-BeenThere: dri-devel@lists.freedesktop.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: Direct Rendering Infrastructure - Development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Maxime Ripard , linux-sunxi@googlegroups.com, Paul Kocialkowski , David Airlie , Chen-Yu Tsai , Thomas Petazzoni , Sean Paul Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" X-Virus-Scanned: ClamAV using ClamSMTP It is often useful to check whether the DRM format info retrieved from the DRM framebuffer matches a specific YUV planes disposition. This introduces helpers to quickly check that a provided format info matches a YUV format with a specific disposition, in commonly-used terminology. The intent of providing helpers taking the format info instead of the fourcc alone is to avoid the overhead of iterating through all formats when the whole format info structure is available. As a result, these helpers are very simple so they are made inline. Signed-off-by: Paul Kocialkowski Reviewed-by: Maxime Ripard --- include/drm/drm_fourcc.h | 42 ++++++++++++++++++++++++++++++++++++++++ 1 file changed, 42 insertions(+) diff --git a/include/drm/drm_fourcc.h b/include/drm/drm_fourcc.h index bcb389f04618..01cd353d9302 100644 --- a/include/drm/drm_fourcc.h +++ b/include/drm/drm_fourcc.h @@ -143,6 +143,48 @@ struct drm_format_name_buf { char str[32]; }; +/** + * drm_format_info_is_yuv_packed - check that the format info matches a YUV + * format with data laid in a single plane + * @info: format info + * + * Returns: + * A boolean indicating whether the format info matches a packed YUV format. + */ +static inline bool +drm_format_info_is_yuv_packed(const struct drm_format_info *info) +{ + return info->is_yuv && info->num_planes == 1; +} + +/** + * drm_format_info_is_yuv_semiplanar - check that the format info matches a YUV + * format with data laid in two planes (luminance and chrominance) + * @info: format info + * + * Returns: + * A boolean indicating whether the format info matches a semiplanar YUV format. + */ +static inline bool +drm_format_info_is_yuv_semiplanar(const struct drm_format_info *info) +{ + return info->is_yuv && info->num_planes == 2; +} + +/** + * drm_format_info_is_yuv_planar - check that the format info matches a YUV + * format with data laid in three planes (one for each YUV component) + * @info: format info + * + * Returns: + * A boolean indicating whether the format info matches a planar YUV format. + */ +static inline bool +drm_format_info_is_yuv_planar(const struct drm_format_info *info) +{ + return info->is_yuv && info->num_planes == 3; +} + const struct drm_format_info *__drm_format_info(u32 format); const struct drm_format_info *drm_format_info(u32 format); const struct drm_format_info *