From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-wr1-f48.google.com (mail-wr1-f48.google.com [209.85.221.48]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id CACEA3D70; Sat, 26 Feb 2022 18:17:50 +0000 (UTC) Received: by mail-wr1-f48.google.com with SMTP id s13so9199121wrb.6; Sat, 26 Feb 2022 10:17:50 -0800 (PST) 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=aXqc/Aa9aaNrrCHTBVmSAtXCikpEnBmLxdEuX//VMWU=; b=jtr7I7oBaQCz1K7NodtGWIWvx6CuCVFmpkCqRc29oj0eixPTVLUs5vEwREXdFpwdjN ibe/afapjhfixepBK/jho5rwnuLm5dd+XbgyViSR9NoJ8+O6lDjEVwP9OZncY+ewMWzw MBb3KFvCfraCchfsT4z7L4eGE8uqmXezcE8C2vetJQOTDsJFe+PzIK4lMos4CdzdaJmc /CjH6tueilO+pHtAOzBr0We1Hgo432CCEYnlWkwMSU6oahg9noYNz9Bb2yFvGXUv3QGM X+ElAO0Fn8KemopfvoEYLXwkMGaBZAs+BpcRfM3Z8bPS4UyB9/hcVok2EN+JimRfZOHD ZO9g== 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=aXqc/Aa9aaNrrCHTBVmSAtXCikpEnBmLxdEuX//VMWU=; b=2ypecNabGKOfa9M9WKByohlO3OEUi8+cy7aTabHJAx2AwCIIN/8a3lOEa3LGj6mRjP 7YfajtKrT5gOUzzT5UoTXzZ8fDcBlWOrTgdMa1Q6ACp6Uif6iCbdKnnBrUBtChhRR9n+ bdPtTPUYja1OoEpQywZu4it2G0ZYAjUQt5Ch3rvvFuA/OxTLsONVThauh3MHyi2NcJ2R JtVCcsCwPNFp+K7/Xsbx67CI1rGzjzH19mTrRYoKrgsfQxODrZFENmv5swmaIJYyVxB/ Za4wO/dzw6i6VJi3dg43PAtVst8bkWgCMbHPhEP2S7h/ZQZbQ2/tmKZVYJgBLOlDJcUT 4S9Q== X-Gm-Message-State: AOAM532Q/mHgDNYRHw5iUmPGpI641DMC/MC2baA4jngaEYic+C3EPhNd nj7/oXm7ecuxV0A4tHziwYI= X-Google-Smtp-Source: ABdhPJxu/yOz40F7BewccOOPmPsZ+nsr7S4T0cKSzHr7RVIH+u7AvaIFfSWZu2pJF2K0Wj9D+uT8/A== X-Received: by 2002:adf:e804:0:b0:1ea:9c3b:8f41 with SMTP id o4-20020adfe804000000b001ea9c3b8f41mr10543899wrm.53.1645899468936; Sat, 26 Feb 2022 10:17:48 -0800 (PST) Received: from kista.localnet (cpe-86-58-32-107.static.triera.net. [86.58.32.107]) by smtp.gmail.com with ESMTPSA id p18-20020adfba92000000b001e4ae791663sm5824814wrg.62.2022.02.26.10.17.47 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sat, 26 Feb 2022 10:17:48 -0800 (PST) From: Jernej =?utf-8?B?xaBrcmFiZWM=?= 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, jonas@kwiboo.se, nicolas@ndufresne.ca, Benjamin Gaignard 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: Re: Re: Re: [PATCH v3 09/14] media: uapi: Add V4L2_CID_STATELESS_HEVC_ENTRY_POINT_OFFSET control Date: Sat, 26 Feb 2022 19:17:46 +0100 Message-ID: <7348885.EvYhyI6sBW@kista> In-Reply-To: <1884298.PYKUYFuaPT@kista> References: <20220225164600.1044663-1-benjamin.gaignard@collabora.com> <4378293.LvFx2qVVIh@kista> <1884298.PYKUYFuaPT@kista> Precedence: bulk X-Mailing-List: linux-sunxi@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="UTF-8" Dne sobota, 26. februar 2022 ob 18:59:18 CET je Jernej =C5=A0krabec napisal= (a): > Hi! >=20 > Dne petek, 25. februar 2022 ob 20:30:20 CET je Jernej =C5=A0krabec napisa= l(a): > > Hi! > >=20 > > Dne petek, 25. februar 2022 ob 17:45:55 CET je Benjamin Gaignard=20 napisal(a): > > > The number of 'entry point offset' could be very variable. > > > Rather than use a large static array define a v4l2 dynamic array > > > of integer control. > >=20 > > I suggest we should be more specific and say U32 (V4L2_CTRL_TYPE_U32). > >=20 > > > The number of entry point offsets is reported by the elems field. >=20 > I did few more tests and these are my findings: > 1. dynamic array can't be set over size, specified in .dims array > 2. entry point offsets are per slice, so if we make slices dynamic array,= =20 then=20 > entry points would become two dimensional dynamic array > 3. num_entry_point_offsets must be part of slice control, because it can = be=20 > zero, but size of array can't be Clarification: num_entry_point_offsets is needed in any case, even without = entry=20 point list. > 4. fortunately, not setting entry points doesn't impact decoding=20 correctness.=20 > This is in line what John told me about them. >=20 > Hans, can you comment points 1-3? I might misunderstand point 1. >=20 > In short, it seems like we don't really need entry points, even if they a= re=20 > used in BSP library. In both cases, I got fluster score 119/138 (10-bit=20 > excluded), so we can just drop this patch, although I'm a bit uneasy not= =20 > setting entry points... >=20 > Best regards, > Jernej >=20 > > >=20 > > > Signed-off-by: Benjamin Gaignard > > > --- > > > .../userspace-api/media/v4l/ext-ctrls-codec.rst | 9 +++++++= ++ > > > include/media/hevc-ctrls.h | 1 + > > > 2 files changed, 10 insertions(+) > > >=20 > > > diff --git a/Documentation/userspace-api/media/v4l/ext-ctrls-codec.rs= t b/ > > Documentation/userspace-api/media/v4l/ext-ctrls-codec.rst > > > index 44a268a948c0..71f7dc1c1ccd 100644 > > > --- a/Documentation/userspace-api/media/v4l/ext-ctrls-codec.rst > > > +++ b/Documentation/userspace-api/media/v4l/ext-ctrls-codec.rst > > > @@ -3128,6 +3128,15 @@ enum v4l2_mpeg_video_hevc_size_of_length_field= - > > > =20 > > > \normalsize > > > =20 > > > +``V4L2_CID_STATELESS_HEVC_ENTRY_POINT_OFFSETS (integer)`` > >=20 > > Here you have OFFSETS (plural) ... > >=20 > > > + Specifies the i-th entry point offset in bytes and is represente= d by > > > + offset_len_minus1 plus 1 bits. > >=20 > > You probably mean entry_point_offset_minus1? offset_len_minus1 just tel= ls=20 how=20 > > much bits need to be read for each element and it's not important for=20 actual=20 > > decoding. > >=20 > > > + This control is a dynamically sized array. The number of entry=20 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 hea= der > > > + semantics" of the specification. > > > + > > > ``V4L2_CID_STATELESS_HEVC_SCALING_MATRIX (struct)`` > > > Specifies the HEVC scaling matrix parameters used for the scalin= g=20 > > process > > > for transform coefficients. > > > diff --git a/include/media/hevc-ctrls.h b/include/media/hevc-ctrls.h > > > index 3016c1abb1d0..3f8a67924df3 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 += =20 > > 1012) > > > #define V4L2_CID_STATELESS_HEVC_DECODE_MODE (V4L2_CID_CODEC_BASE +=20 > > 1015) > > > #define V4L2_CID_STATELESS_HEVC_START_CODE (V4L2_CID_CODEC_BASE=20 +=20 > 1016) > > > +#define V4L2_CID_STATELESS_HEVC_ENTRY_POINT_OFFSET (V4L2_CID_CODEC_B= ASE=20 +=20 > > 1017) > >=20 > > ... and here you have OFFSET (singlular). I suggest plural form to be u= sed=20 > in=20 > > all places, including subject line of this commit. > >=20 > > Additionally, it would be nice if control is initialized, like so: > > https://github.com/jernejsk/linux-1/commit/ > > f938e162cd8dd77c9f6f1b248d80144840a37bce > >=20 > > Best regards, > > Jernej > >=20 > > > =20 > > > /* enum v4l2_ctrl_type type values */ > > > #define V4L2_CTRL_TYPE_HEVC_SPS 0x0120 > > > --=20 > > > 2.32.0 > > >=20 > > >=20 > >=20 > >=20 > >=20 >=20 >=20 >=20 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 bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id E118CC433F5 for ; Sat, 26 Feb 2022 18:18:58 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:References:In-Reply-To: Message-ID:Date:Subject:Cc:To:From:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=4kP0xkEf1ao4k2d1eMnqrK3+JC0UBgegaGJqP5zEu6s=; b=lG+176/1TLASv8 rKr5k7J8Rgom1NstB1pLqUHom4fo4rARtvQ9X3qHCEc2npMwDraLEoWzUjgZnBuBZDTDckw2jEjLE RTGeFF/E01BGHwJcmM0iBZsaEnr0+ZmhrhJfwnosM4udo5P7gsdWYt14IhFdYhwN9W5453N485GJh +ITMRgakzmqtRkochlOHWzhU+HbfMsbdGSzLUFqI6ZUyybhsNszIbifesOcghY7greqHudfWp9aCL 4rWkSbI1fbAyuOgOMyg/Y2OPtGE5MPNwN+1TK+i4DdAMXTh7pAr1fKK2IoMM4mmBJKnP5KxgtJ3N1 YVxih/A3j0hAhpwu+mjA==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1nO1dm-008LzI-0f; Sat, 26 Feb 2022 18:17:58 +0000 Received: from mail-wr1-x435.google.com ([2a00:1450:4864:20::435]) by bombadil.infradead.org with esmtps (Exim 4.94.2 #2 (Red Hat Linux)) id 1nO1di-008Lxd-HL for linux-arm-kernel@lists.infradead.org; Sat, 26 Feb 2022 18:17:56 +0000 Received: by mail-wr1-x435.google.com with SMTP id v21so9195767wrv.5 for ; Sat, 26 Feb 2022 10:17:50 -0800 (PST) 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=aXqc/Aa9aaNrrCHTBVmSAtXCikpEnBmLxdEuX//VMWU=; b=jtr7I7oBaQCz1K7NodtGWIWvx6CuCVFmpkCqRc29oj0eixPTVLUs5vEwREXdFpwdjN ibe/afapjhfixepBK/jho5rwnuLm5dd+XbgyViSR9NoJ8+O6lDjEVwP9OZncY+ewMWzw MBb3KFvCfraCchfsT4z7L4eGE8uqmXezcE8C2vetJQOTDsJFe+PzIK4lMos4CdzdaJmc /CjH6tueilO+pHtAOzBr0We1Hgo432CCEYnlWkwMSU6oahg9noYNz9Bb2yFvGXUv3QGM X+ElAO0Fn8KemopfvoEYLXwkMGaBZAs+BpcRfM3Z8bPS4UyB9/hcVok2EN+JimRfZOHD ZO9g== 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=aXqc/Aa9aaNrrCHTBVmSAtXCikpEnBmLxdEuX//VMWU=; b=aL16u5QLEbQQxy20kFuoIsPwF2FusQ7Mc+ib+6shIndZwpnxIF00vr+rxCG7la3wcA 05es4tG2TQEgqVWl8utVnj3Iro3dzz/PVr1D/dlphvq6+aNp8dDv1tgg2DIep/4oaSt4 MMZ9emQI5SzN0qBx8CwZ6fx0isqIiWy8DXRcMERc3ZkapfrkbIfkYf6HaUk2/p8vJTNV CMz8YX49uP2H86UH08+ENH+45uWZHo3FLOXzDO2mwg3cyfxzy+ibmIbCmR6RefXRe+8m AIXNX6eyWTCWj3wC60p2h8IpVuGnR7W/iPevCqBxe+cfTBcWVq/s/HCN8+lh7fnaet6h htfw== X-Gm-Message-State: AOAM530Jsl2z7uSOTkMebP2VYnlsqF72x5NyX3dlyGiB2ipaGx71wuX7 KWPidSgr3LGiH+3IFkfZ9FQ= X-Google-Smtp-Source: ABdhPJxu/yOz40F7BewccOOPmPsZ+nsr7S4T0cKSzHr7RVIH+u7AvaIFfSWZu2pJF2K0Wj9D+uT8/A== X-Received: by 2002:adf:e804:0:b0:1ea:9c3b:8f41 with SMTP id o4-20020adfe804000000b001ea9c3b8f41mr10543899wrm.53.1645899468936; Sat, 26 Feb 2022 10:17:48 -0800 (PST) Received: from kista.localnet (cpe-86-58-32-107.static.triera.net. [86.58.32.107]) by smtp.gmail.com with ESMTPSA id p18-20020adfba92000000b001e4ae791663sm5824814wrg.62.2022.02.26.10.17.47 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sat, 26 Feb 2022 10:17:48 -0800 (PST) From: Jernej =?utf-8?B?xaBrcmFiZWM=?= 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, jonas@kwiboo.se, nicolas@ndufresne.ca, Benjamin Gaignard 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: Re: Re: Re: [PATCH v3 09/14] media: uapi: Add V4L2_CID_STATELESS_HEVC_ENTRY_POINT_OFFSET control Date: Sat, 26 Feb 2022 19:17:46 +0100 Message-ID: <7348885.EvYhyI6sBW@kista> In-Reply-To: <1884298.PYKUYFuaPT@kista> References: 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