From patchwork Wed Dec 5 08:36:43 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Paul Kocialkowski X-Patchwork-Id: 10713183 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 EAB7A17DB for ; Wed, 5 Dec 2018 08:37:44 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id DC73A2B73A for ; Wed, 5 Dec 2018 08:37:44 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id D07542C3E3; Wed, 5 Dec 2018 08:37:44 +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 8288D2B73A for ; Wed, 5 Dec 2018 08:37:44 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id B5D016E36D; Wed, 5 Dec 2018 08:37:40 +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 403606E36D for ; Wed, 5 Dec 2018 08:37:37 +0000 (UTC) Received: by mail.bootlin.com (Postfix, from userid 110) id 14B32207BF; Wed, 5 Dec 2018 09:37:36 +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 B3E6520828; 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 02/22] drm/fourcc: Add format info helpers for checking YUV sub-sampling Date: Wed, 5 Dec 2018 09:36:43 +0100 Message-Id: <20181205083703.21488-3-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 Display engine drivers often need to distinguish between different types of YUV sub-sampling. This introduces helpers to check for common sub-sampling ratios in their commonly-used denomination from the DRM format info. Signed-off-by: Paul Kocialkowski Reviewed-by: Maxime Ripard --- include/drm/drm_fourcc.h | 75 ++++++++++++++++++++++++++++++++++++++++ 1 file changed, 75 insertions(+) diff --git a/include/drm/drm_fourcc.h b/include/drm/drm_fourcc.h index 01cd353d9302..b3d9d88ab290 100644 --- a/include/drm/drm_fourcc.h +++ b/include/drm/drm_fourcc.h @@ -185,6 +185,81 @@ drm_format_info_is_yuv_planar(const struct drm_format_info *info) return info->is_yuv && info->num_planes == 3; } +/** + * drm_format_info_is_yuv_sampling_410 - check that the format info matches a + * YUV format with 4:1:0 sub-sampling + * @info: format info + * + * Returns: + * A boolean indicating whether the format info matches a YUV format with 4:1:0 + * sub-sampling. + */ +static inline bool +drm_format_info_is_yuv_sampling_410(const struct drm_format_info *info) +{ + return info->is_yuv && info->hsub == 4 && info->vsub == 4; +} + +/** + * drm_format_info_is_yuv_sampling_411 - check that the format info matches a + * YUV format with 4:1:1 sub-sampling + * @info: format info + * + * Returns: + * A boolean indicating whether the format info matches a YUV format with 4:1:1 + * sub-sampling. + */ +static inline bool +drm_format_info_is_yuv_sampling_411(const struct drm_format_info *info) +{ + return info->is_yuv && info->hsub == 4 && info->vsub == 1; +} + +/** + * drm_format_info_is_yuv_sampling_420 - check that the format info matches a + * YUV format with 4:2:0 sub-sampling + * @info: format info + * + * Returns: + * A boolean indicating whether the format info matches a YUV format with 4:2:0 + * sub-sampling. + */ +static inline bool +drm_format_info_is_yuv_sampling_420(const struct drm_format_info *info) +{ + return info->is_yuv && info->hsub == 2 && info->vsub == 2; +} + +/** + * drm_format_info_is_yuv_sampling_422 - check that the format info matches a + * YUV format with 4:2:2 sub-sampling + * @info: format info + * + * Returns: + * A boolean indicating whether the format info matches a YUV format with 4:2:2 + * sub-sampling. + */ +static inline bool +drm_format_info_is_yuv_sampling_422(const struct drm_format_info *info) +{ + return info->is_yuv && info->hsub == 2 && info->vsub == 1; +} + +/** + * drm_format_info_is_yuv_sampling_444 - check that the format info matches a + * YUV format with 4:4:4 sub-sampling + * @info: format info + * + * Returns: + * A boolean indicating whether the format info matches a YUV format with 4:4:4 + * sub-sampling. + */ +static inline bool +drm_format_info_is_yuv_sampling_444(const struct drm_format_info *info) +{ + return info->is_yuv && info->hsub == 1 && info->vsub == 1; +} + 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 *