From mboxrd@z Thu Jan 1 00:00:00 1970 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 19CD1C433EF for ; Fri, 8 Jul 2022 14:02:47 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S238221AbiGHOCq (ORCPT ); Fri, 8 Jul 2022 10:02:46 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:33742 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S238158AbiGHOCp (ORCPT ); Fri, 8 Jul 2022 10:02:45 -0400 Received: from mail-ed1-x533.google.com (mail-ed1-x533.google.com [IPv6:2a00:1450:4864:20::533]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 2C16A17AB0; Fri, 8 Jul 2022 07:02:44 -0700 (PDT) Received: by mail-ed1-x533.google.com with SMTP id fd6so26982306edb.5; Fri, 08 Jul 2022 07:02:44 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20210112; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=F7oZGiTf22yduXzKnlRZ5i/UEiJcCIYtZr80JfrcWJA=; b=jX99svRh8xS9/r4UdMiq3Y43MyPOaKw23r0VGQpXgkg3bioDTKO58NGaP49lqcXvpc DFBO6tQcbxHsWjsGqky0/k1S76xj5BSrxed1s2pSnnXFyInXkzuJmcQXTb0PVCtEaTDb jitJSvt3JPKrhn6U7i2dLTbuS/pK6AFioBujioBFbqGEykPog3kNwEZ1yBki79CqYn1l 4ZuRg+Uk4ejPWhlNRn0Pzuk7qu+w2qQBTJSQej5gWEFRr1awgBY7EVSA1r4bE02WyhJi QLwZ8OTYPirLS2KvJK0+5Uhz0nv3rbxAOmIrJ1IKw3XRA0BWZpcN1A/Umt72OoYc1TpX g11w== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=F7oZGiTf22yduXzKnlRZ5i/UEiJcCIYtZr80JfrcWJA=; b=LqPUuue2Zr8OXumUdXmjU7NaXo7HF43/+qoZwLnpmGS90v5aVS3OqxkL9B4c/vapvm Mdghh9/Wz0HZZ6gps1c2Hqe1tHxV4w5HeQBKEx7qs/tSazJ88LF3Q4PVrggbDD1iFCQN Hor26ECiHEc8npHV1NLopoPIWTccpKfz1cC2/0vJDDYI4M8oJ6LPJFnNT/n1OS+q4knW RCK3pefjUULa3Fz3GKCkcf5Dys2gTD2o1Vy1HDDOcISMV77sNyT8mAmTzuTJIWOBadOE 0g2eCQxo6sjfxrMo856ZYfiljhLflcVCqav21CFMyjyb2QatB02SQJ9dPwLjjIO5ZdFX 0xww== X-Gm-Message-State: AJIora+mlk1wbuhMWZ+C/36axxdXVGOCDMuyLTHRp9T8BhpXZ7XhHhV9 Fsts3FmhBBITTMRaWs11ByA= X-Google-Smtp-Source: AGRyM1uL3PNKL7wSHt7HyGuMnLf4+atBsviy3tmAb8n+32sYhrZgr9xVlpYX+JxNRGbN+AcQxRdQSA== X-Received: by 2002:a05:6402:22b5:b0:43a:8e9f:f495 with SMTP id cx21-20020a05640222b500b0043a8e9ff495mr4961017edb.324.1657288962504; Fri, 08 Jul 2022 07:02:42 -0700 (PDT) Received: from jernej-laptop.localnet (213-161-3-76.dynamic.telemach.net. [213.161.3.76]) by smtp.gmail.com with ESMTPSA id o19-20020a170906769300b0072b13a10477sm2143227ejm.108.2022.07.08.07.02.40 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 08 Jul 2022 07:02:42 -0700 (PDT) From: Jernej =?utf-8?B?xaBrcmFiZWM=?= To: mchehab@kernel.org, hverkuil@xs4all.nl, ezequiel@vanguardiasur.com.ar, p.zabel@pengutronix.de, gregkh@linuxfoundation.org, mripard@kernel.org, paul.kocialkowski@bootlin.com, wens@csie.org, samuel@sholland.org, nicolas.dufresne@collabora.com, andrzej.p@collabora.com, Benjamin Gaignard Cc: linux-media@vger.kernel.org, linux-kernel@vger.kernel.org, linux-rockchip@lists.infradead.org, linux-staging@lists.linux.dev, linux-arm-kernel@lists.infradead.org, linux-sunxi@lists.linux.dev, kernel@collabora.com, Benjamin Gaignard Subject: Re: [PATCH v12 11/17] media: uapi: Add V4L2_CID_STATELESS_HEVC_ENTRY_POINT_OFFSETS control Date: Fri, 08 Jul 2022 16:02:40 +0200 Message-ID: <2106581.irdbgypaU6@jernej-laptop> In-Reply-To: <20220708120554.495495-12-benjamin.gaignard@collabora.com> References: <20220708120554.495495-1-benjamin.gaignard@collabora.com> <20220708120554.495495-12-benjamin.gaignard@collabora.com> MIME-Version: 1.0 Content-Transfer-Encoding: 7Bit Content-Type: text/plain; charset="us-ascii" Precedence: bulk List-ID: X-Mailing-List: linux-media@vger.kernel.org Hi Benjamin! Dne petek, 08. julij 2022 ob 14:05:48 CEST je Benjamin Gaignard napisal(a): > The number of 'entry point offset' can be very variable. > Instead of using a large static array define a v4l2 dynamic array > of U32 (V4L2_CTRL_TYPE_U32). > The number of entry point offsets is reported by the elems field > and in struct v4l2_ctrl_hevc_slice_params.num_entry_point_offsets > field. > > Signed-off-by: Benjamin Gaignard > Acked-by: Nicolas Dufresne > Tested-by: Jernej Skrabec > --- > version 12: > - Reword num_entry_point_offsets documentation > > .../userspace-api/media/v4l/ext-ctrls-codec.rst | 13 +++++++++++++ > drivers/media/v4l2-core/v4l2-ctrls-defs.c | 5 +++++ > include/media/hevc-ctrls.h | 5 ++++- > 3 files changed, 22 insertions(+), 1 deletion(-) > > diff --git a/Documentation/userspace-api/media/v4l/ext-ctrls-codec.rst > b/Documentation/userspace-api/media/v4l/ext-ctrls-codec.rst index > c2e0adece613..0cd967126fdf 100644 > --- a/Documentation/userspace-api/media/v4l/ext-ctrls-codec.rst > +++ b/Documentation/userspace-api/media/v4l/ext-ctrls-codec.rst > @@ -3010,6 +3010,11 @@ enum v4l2_mpeg_video_hevc_size_of_length_field - > * - __u32 > - ``data_bit_offset`` > - Offset (in bits) to the video data in the current slice data. > + * - __u32 > + - ``num_entry_point_offsets`` > + - Specifies the number of entry point offset syntax elements in the > slice header. + When the driver supports it, the > ``V4L2_CID_STATELESS_HEVC_ENTRY_POINT_OFFSETS`` + must be set. > * - __u8 > - ``nal_unit_type`` > - Specifies the coding type of the slice (B, P or I). > @@ -3150,6 +3155,14 @@ enum v4l2_mpeg_video_hevc_size_of_length_field - > > \normalsize > > +``V4L2_CID_STATELESS_HEVC_ENTRY_POINT_OFFSETS (integer)`` > + Specifies entry point offsets in bytes. > + This control is a dynamically sized array. The number of entry point > + offsets is reported by the ``elems`` field. > + This bitstream parameter is defined according to :ref:`hevc`. > + They are described in section 7.4.7.1 "General slice segment header > + semantics" of the specification. You forgot to update above description per Ezequiel comment. Best regards, Jernej > + > ``V4L2_CID_STATELESS_HEVC_SCALING_MATRIX (struct)`` > Specifies the HEVC scaling matrix parameters used for the scaling > process for transform coefficients. > diff --git a/drivers/media/v4l2-core/v4l2-ctrls-defs.c > b/drivers/media/v4l2-core/v4l2-ctrls-defs.c index > d594efbcbb93..e22921e7ea61 100644 > --- a/drivers/media/v4l2-core/v4l2-ctrls-defs.c > +++ b/drivers/media/v4l2-core/v4l2-ctrls-defs.c > @@ -1188,6 +1188,7 @@ const char *v4l2_ctrl_get_name(u32 id) > case V4L2_CID_STATELESS_HEVC_DECODE_PARAMS: return "HEVC Decode > Parameters"; case V4L2_CID_STATELESS_HEVC_DECODE_MODE: return "HEVC Decode > Mode"; case V4L2_CID_STATELESS_HEVC_START_CODE: return "HEVC Start Code"; > + case V4L2_CID_STATELESS_HEVC_ENTRY_POINT_OFFSETS: return "HEVC Entry > Point Offsets"; > > /* Colorimetry controls */ > /* Keep the order of the 'case's the same as in v4l2-controls.h! */ > @@ -1518,6 +1519,10 @@ void v4l2_ctrl_fill(u32 id, const char **name, enum > v4l2_ctrl_type *type, case V4L2_CID_STATELESS_HEVC_DECODE_PARAMS: > *type = V4L2_CTRL_TYPE_HEVC_DECODE_PARAMS; > break; > + case V4L2_CID_STATELESS_HEVC_ENTRY_POINT_OFFSETS: > + *type = V4L2_CTRL_TYPE_U32; > + *flags |= V4L2_CTRL_FLAG_DYNAMIC_ARRAY; > + break; > case V4L2_CID_STATELESS_VP9_COMPRESSED_HDR: > *type = V4L2_CTRL_TYPE_VP9_COMPRESSED_HDR; > break; > diff --git a/include/media/hevc-ctrls.h b/include/media/hevc-ctrls.h > index a372c184689e..3a6601a46ced 100644 > --- a/include/media/hevc-ctrls.h > +++ b/include/media/hevc-ctrls.h > @@ -20,6 +20,7 @@ > #define V4L2_CID_STATELESS_HEVC_DECODE_PARAMS (V4L2_CID_CODEC_BASE + 1012) > #define V4L2_CID_STATELESS_HEVC_DECODE_MODE (V4L2_CID_CODEC_BASE + 1015) > #define V4L2_CID_STATELESS_HEVC_START_CODE (V4L2_CID_CODEC_BASE + 1016) > +#define V4L2_CID_STATELESS_HEVC_ENTRY_POINT_OFFSETS (V4L2_CID_CODEC_BASE + > 1017) > > /* enum v4l2_ctrl_type type values */ > #define V4L2_CTRL_TYPE_HEVC_SPS 0x0120 > @@ -316,6 +317,8 @@ struct v4l2_hevc_pred_weight_table { > * > * @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 + * @num_entry_point_offsets: specifies the number of entry > point offset syntax + * elements in the slice header. > * @nal_unit_type: specifies the coding type of the slice (B, P or I) > * @nuh_temporal_id_plus1: minus 1 specifies a temporal identifier for the > NAL unit * @slice_type: see V4L2_HEVC_SLICE_TYPE_{} > @@ -358,7 +361,7 @@ struct v4l2_hevc_pred_weight_table { > struct v4l2_ctrl_hevc_slice_params { > __u32 bit_size; > __u32 data_bit_offset; > - > + __u32 num_entry_point_offsets; > /* ISO/IEC 23008-2, ITU-T Rec. H.265: NAL unit header */ > __u8 nal_unit_type; > __u8 nuh_temporal_id_plus1;