From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-ej1-f45.google.com (mail-ej1-f45.google.com [209.85.218.45]) (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 554AD437E; Mon, 28 Mar 2022 17:10:19 +0000 (UTC) Received: by mail-ej1-f45.google.com with SMTP id yy13so30070733ejb.2; Mon, 28 Mar 2022 10:10:19 -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=Ofjd2BLbf/d57rh07u4nbPhNk5X3kqpA9oKVtxjKxc4=; b=RdJbBdxYbiTOUg5lxR0R+3/uOKZOUPBBpsyEkMPR8HHH3Wj7UmqQ0sxQA+kkEx92pP oce38WRh3IhgxR9b2W6uMT1D9+r/0P1SpUwYPi2tFx6GrEQmLX1anrY3S/AYbj7Tggei urziVxnW+ZtH9/qhxaj1Xfafl9l2o7GoXkfPeIu/Xrxf/85l/uuFuYCTIk25IxrCOnSl 73TkmiNmg2xjWech/yEn3BCp7ycy20cfnr3ShHoF3LTMke99AY6KPD7ZeD84aEj8RaRE XlDOqkH9+eq5M3h4qYxL3A8KBiJfQ8dLHcCju/ft3Ymfl0LgwqHkDqEOpV+2ZzuUzFS3 xZvQ== 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=Ofjd2BLbf/d57rh07u4nbPhNk5X3kqpA9oKVtxjKxc4=; b=ofoy4QdW3ah6OGtKnrECNV/YjgCDg6Anpvu/wBcK78SIcAzLbAa/AdXUN87x9K5Ubd 89CAkTLuhJq8ufRPANqTkELhEU/MdSLydkHhlg4XBrd7UGhGfhCISLUOE3pH6VfPDuqf tEFEbm7v7CZdmLlqxoQQF4WYBVCumPciAQDERESBJw9d0TFPtlPU0QW1dq7ug8YN23XK xAlWkMiv1guMNbBDIWELeqcWSLRF0T9QbAR3FRA+zyMm90sDMIlEx/QaW/VMl42nUHcQ c3OuBp0CYDOdL/5FhB/4p5mKp+BQEMjJLdXSpt3MO319QIFajhg0uUE5N9MEqku7LFt+ Rzrg== X-Gm-Message-State: AOAM532etLhTWTT/D0g6ZRL5jJB107IIKFLtD0EYDduxel7Un9xPtKeO x1bQwvtqYqAKsyF1rYApxUs= X-Google-Smtp-Source: ABdhPJyqg4BdnBj4b8BiPKRMBVJOYfgoYQTkh+JHfQmfe8ltITzE2pv4VlnjsBwMAjCa2rMFVr44bw== X-Received: by 2002:a17:907:728b:b0:6df:8f3b:28ae with SMTP id dt11-20020a170907728b00b006df8f3b28aemr28825891ejc.336.1648487417609; Mon, 28 Mar 2022 10:10:17 -0700 (PDT) Received: from jernej-laptop.localnet (cpe-86-58-32-107.static.triera.net. [86.58.32.107]) by smtp.gmail.com with ESMTPSA id j9-20020a170906534900b006df9b29eaf1sm6174022ejo.8.2022.03.28.10.10.15 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 28 Mar 2022 10:10:16 -0700 (PDT) From: Jernej =?utf-8?B?xaBrcmFiZWM=?= To: linux-media@vger.kernel.org, Sebastian Fricke Cc: acourbot@chromium.org, tfiga@chromium.org, hverkuil-cisco@xs4all.nl, Sebastian Fricke , Mauro Carvalho Chehab , Maxime Ripard , Paul Kocialkowski , Greg Kroah-Hartman , Chen-Yu Tsai , open list , "open list:STAGING SUBSYSTEM" , "moderated list:ARM/Allwinner sunXi SoC support" , "open list:ARM/Allwinner sunXi SoC support" Subject: Re: [RFC PATCH v3 1/2] media: docs-rst: Append HEVC specific term Date: Mon, 28 Mar 2022 19:10:15 +0200 Message-ID: <2095465.irdbgypaU6@jernej-laptop> In-Reply-To: <20220327084308.9053-2-sebastian.fricke@collabora.com> References: <20220327084308.9053-1-sebastian.fricke@collabora.com> <20220327084308.9053-2-sebastian.fricke@collabora.com> Precedence: bulk X-Mailing-List: linux-staging@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 nedelja, 27. marec 2022 ob 10:43:08 CEST je Sebastian Fricke napisal(a): > Describe the coding tree unit as replacement for the macroblock in the > HEVC codec. Highlight a key difference of the HEVC codec to predecessors > like AVC(H.264) to give a better overview of the differences between the > coding standards. >=20 Looks good to me. Acked-by: Jernej Skrabec Best regards, Jernej > Signed-off-by: Sebastian Fricke > --- > Documentation/userspace-api/media/v4l/dev-decoder.rst | 8 +++++++- > 1 file changed, 7 insertions(+), 1 deletion(-) >=20 > diff --git a/Documentation/userspace-api/media/v4l/dev-decoder.rst > b/Documentation/userspace-api/media/v4l/dev-decoder.rst index > 3cf2b496f2d0..eb5b1b1e3a51 100644 > --- a/Documentation/userspace-api/media/v4l/dev-decoder.rst > +++ b/Documentation/userspace-api/media/v4l/dev-decoder.rst > @@ -72,6 +72,11 @@ coded resolution > coded width > width for given coded resolution. >=20 > +coding tree unit > + processing unit of the HEVC codec (=E2=89=98 macroblock units in H.26= 4, VP8, > VP9); + can use block structures of up to 64=C3=9764 pixels; > + Good at sub-partitioning the picture into variable sized structures. > + > decode order > the order in which frames are decoded; may differ from display order = if > the coded format includes a feature of frame reordering; for decoders, @@ > -104,7 +109,8 @@ keyframe > macroblock > a processing unit in image and video compression formats based on lin= ear > block transforms (e.g. H.264, VP8, VP9); codec-specific, but for most of = =2D=20 > popular codecs the size is 16x16 samples (pixels). > + popular codecs the size is 16x16 samples (pixels). The HEVC codec use= s a > + slightly more flexible processing unit called coding tree unit (CTU). >=20 > OUTPUT > the source buffer queue; for decoders, the queue of buffers containing