From patchwork Fri Feb 25 16:45:53 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Benjamin Gaignard X-Patchwork-Id: 546061 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 2FE79C4332F for ; Fri, 25 Feb 2022 16:46:23 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S243233AbiBYQqx (ORCPT ); Fri, 25 Feb 2022 11:46:53 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:50610 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S243197AbiBYQqs (ORCPT ); Fri, 25 Feb 2022 11:46:48 -0500 Received: from bhuna.collabora.co.uk (bhuna.collabora.co.uk [IPv6:2a00:1098:0:82:1000:25:2eeb:e3e3]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id D8E7D22D648; Fri, 25 Feb 2022 08:46:15 -0800 (PST) Received: from benjamin-XPS-13-9310.. (unknown [IPv6:2a01:e0a:120:3210:947c:7c9e:f96:1bc]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) (Authenticated sender: benjamin.gaignard) by bhuna.collabora.co.uk (Postfix) with ESMTPSA id 2E3C51F4637E; Fri, 25 Feb 2022 16:46:14 +0000 (GMT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=collabora.com; s=mail; t=1645807574; bh=1efQRsTSb/TbonDTR62JGVtaxw0xtZBRD5WqCbjWseg=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=Pj1k7u0abLDHj8d5XPrhXdVJGprxQF3eaExfkjtkF4ClxevhwXqrc+mLtoxwmzYf4 zamxrXOkP9z/HyKotEYxmia0WuOWKfNfVqvlNPMKeXW9g6ioDhracecmA727kRnlH1 MM67xCc3YOGGeSmojkQ+yWBCcDtCA2owPsCQuBkEmE6o3rwdy6W7cR4CnK3w8WW4I8 SefYpK6Kc3KeadSCrYFN+UV533GdzoA4ka11aS0W0p1Af6IjRNg+FoKEVzPOFWXog3 INApZ+E4vURPS5STj+zz35sy0HX5mmnM3jq9PIurXLOtgQhQeyzM5sQRYnCNQ7hvkW AKz/73eHHxLTw== From: Benjamin Gaignard To: mchehab@kernel.org, ezequiel@vanguardiasur.com.ar, p.zabel@pengutronix.de, gregkh@linuxfoundation.org, mripard@kernel.org, paul.kocialkowski@bootlin.com, wens@csie.org, jernej.skrabec@gmail.com, jonas@kwiboo.se, nicolas@ndufresne.ca Cc: linux-media@vger.kernel.org, linux-kernel@vger.kernel.org, linux-staging@lists.linux.dev, linux-arm-kernel@lists.infradead.org, linux-sunxi@lists.linux.dev, kernel@collabora.com, knaerzche@gmail.com, jc@kynesim.co.uk, Benjamin Gaignard Subject: [PATCH v3 07/14] media: uapi: HEVC: Define V4L2_CID_STATELESS_HEVC_SLICE_PARAMS as a dynamic array Date: Fri, 25 Feb 2022 17:45:53 +0100 Message-Id: <20220225164600.1044663-8-benjamin.gaignard@collabora.com> X-Mailer: git-send-email 2.32.0 In-Reply-To: <20220225164600.1044663-1-benjamin.gaignard@collabora.com> References: <20220225164600.1044663-1-benjamin.gaignard@collabora.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-media@vger.kernel.org Make explicit that V4L2_CID_STATELESS_HEVC_SLICE_PARAMS control is a dynamic array control type. Some drivers may be able to receive multiple slices in one control to improve decoding performance. Signed-off-by: Benjamin Gaignard --- Documentation/userspace-api/media/v4l/ext-ctrls-codec.rst | 2 ++ include/media/hevc-ctrls.h | 3 +++ 2 files changed, 5 insertions(+) diff --git a/Documentation/userspace-api/media/v4l/ext-ctrls-codec.rst b/Documentation/userspace-api/media/v4l/ext-ctrls-codec.rst index 18625d18ddf3..44a268a948c0 100644 --- a/Documentation/userspace-api/media/v4l/ext-ctrls-codec.rst +++ b/Documentation/userspace-api/media/v4l/ext-ctrls-codec.rst @@ -2964,6 +2964,8 @@ enum v4l2_mpeg_video_hevc_size_of_length_field - These bitstream parameters are defined according to :ref:`hevc`. They are described in section 7.4.7 "General slice segment header semantics" of the specification. + This control is a dynamically sized 1-dimensional array, + V4L2_CTRL_FLAG_DYNAMIC_ARRAY flag must be set when using it. .. c:type:: v4l2_ctrl_hevc_slice_params diff --git a/include/media/hevc-ctrls.h b/include/media/hevc-ctrls.h index 1c86566cd7cb..057b5032453b 100644 --- a/include/media/hevc-ctrls.h +++ b/include/media/hevc-ctrls.h @@ -300,6 +300,9 @@ struct v4l2_hevc_pred_weight_table { /** * v4l2_ctrl_hevc_slice_params - HEVC slice parameters * + * This control is a dynamically sized 1-dimensional array, + * V4L2_CTRL_FLAG_DYNAMIC_ARRAY flag must be set when using it. + * * @bit_size: size (in bits) of the current slice data * @data_bit_offset: offset (in bits) to the video data in the current slice data * @nal_unit_type: specifies the coding type of the slice (B, P or I)