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[213.161.3.76]) by smtp.gmail.com with ESMTPSA id bu23-20020a170906a15700b006fec56c57f3sm20658400ejb.178.2022.07.08.09.11.42 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 08 Jul 2022 09:11:43 -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 Subject: Re: Re: [PATCH v12 11/17] media: uapi: Add V4L2_CID_STATELESS_HEVC_ENTRY_POINT_OFFSETS control Date: Fri, 08 Jul 2022 18:11:42 +0200 Message-ID: <4604967.rnE6jSC6OK@kista> In-Reply-To: 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[213.161.3.76]) by smtp.gmail.com with ESMTPSA id bu23-20020a170906a15700b006fec56c57f3sm20658400ejb.178.2022.07.08.09.11.42 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 08 Jul 2022 09:11:43 -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 Subject: Re: Re: [PATCH v12 11/17] media: uapi: Add V4L2_CID_STATELESS_HEVC_ENTRY_POINT_OFFSETS control Date: Fri, 08 Jul 2022 18:11:42 +0200 Message-ID: <4604967.rnE6jSC6OK@kista> In-Reply-To: <5e346689-5a0c-8fc7-129d-53a6f28e5349@collabora.com> References: <20220708120554.495495-1-benjamin.gaignard@collabora.com> <2106581.irdbgypaU6@jernej-laptop> <5e346689-5a0c-8fc7-129d-53a6f28e5349@collabora.com> 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 petek, 08. julij 2022 ob 18:00:24 CEST je Benjamin Gaignard napisal(a): > Le 08/07/2022 =C3=A0 16:02, Jernej =C5=A0krabec a =C3=A9crit : > > Hi Benjamin! > >=20 > > Dne petek, 08. julij 2022 ob 14:05:48 CEST je Benjamin Gaignard=20 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. > >>=20 > >> Signed-off-by: Benjamin Gaignard > >> Acked-by: Nicolas Dufresne > >> Tested-by: Jernej Skrabec > >> --- > >> version 12: > >> - Reword num_entry_point_offsets documentation > >>=20 > >> .../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(-) > >>=20 > >> 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 - > >>=20 > >> * - __u32 > >> =20 > >> - ``data_bit_offset`` > >> - Offset (in bits) to the video data in the current slice data. > >>=20 > >> + * - __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. > >>=20 > >> * - __u8 > >> =20 > >> - ``nal_unit_type`` > >> - Specifies the coding type of the slice (B, P or I). > >>=20 > >> @@ -3150,6 +3155,14 @@ enum v4l2_mpeg_video_hevc_size_of_length_field - > >>=20 > >> \normalsize > >>=20 > >> +``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 po= int > >> + 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 head= er > >> + semantics" of the specification. > >=20 > > You forgot to update above description per Ezequiel comment. >=20 > No it was num_entry_point_offsets which was needed to be updated > not this control. Both needs to be updated. Ezequiel said: "I would add Jernej's clarification about the length of the control here, where the control is documented." "" 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. When multiple slices are submitted in a request, the length of this array must be the sum of num_entry_point_offsets of all the slices in the request. "" Best regards, Jernej >=20 > Regards, > Benjamin >=20 > > Best regards, > > Jernej > >=20 > >> + > >>=20 > >> ``V4L2_CID_STATELESS_HEVC_SCALING_MATRIX (struct)`` > >> =20 > >> Specifies the HEVC scaling matrix parameters used for the scaling > >>=20 > >> 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) > >>=20 > >> case V4L2_CID_STATELESS_HEVC_DECODE_PARAMS: return > >=20 > > "HEVC Decode > >=20 > >> Parameters"; case V4L2_CID_STATELESS_HEVC_DECODE_MODE: return > >=20 > > "HEVC Decode > >=20 > >> Mode"; case V4L2_CID_STATELESS_HEVC_START_CODE: return > >=20 > > "HEVC Start Code"; > >=20 > >> + case V4L2_CID_STATELESS_HEVC_ENTRY_POINT_OFFSETS: return > >=20 > > "HEVC Entry > >=20 > >> Point Offsets"; > >>=20 > >> /* Colorimetry controls */ > >> /* Keep the order of the 'case's the same as in v4l2-controls.h! > >=20 > > */ > >=20 > >> @@ -1518,6 +1519,10 @@ void v4l2_ctrl_fill(u32 id, const char **name, > >> enum > >>=20 > >> v4l2_ctrl_type *type, case V4L2_CID_STATELESS_HEVC_DECODE_PARAMS: > >> *type =3D V4L2_CTRL_TYPE_HEVC_DECODE_PARAMS; > >> break; > >>=20 > >> + case V4L2_CID_STATELESS_HEVC_ENTRY_POINT_OFFSETS: > >> + *type =3D V4L2_CTRL_TYPE_U32; > >> + *flags |=3D V4L2_CTRL_FLAG_DYNAMIC_ARRAY; > >> + break; > >>=20 > >> case V4L2_CID_STATELESS_VP9_COMPRESSED_HDR: > >> *type =3D V4L2_CTRL_TYPE_VP9_COMPRESSED_HDR; > >> break; > >>=20 > >> 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 @@ > >>=20 > >> #define V4L2_CID_STATELESS_HEVC_DECODE_PARAMS=09 (V4L2_CID_CODEC_BASE > >=20 > > + 1012) > >=20 > >> #define V4L2_CID_STATELESS_HEVC_DECODE_MODE (V4L2_CID_CODEC_BASE=20 + > >> 1015) > >> #define V4L2_CID_STATELESS_HEVC_START_CODE (V4L2_CID_CODEC_BASE + 10= 16) > >>=20 > >> +#define V4L2_CID_STATELESS_HEVC_ENTRY_POINT_OFFSETS (V4L2_CID_CODEC_B= ASE > >> + > >> 1017) > >>=20 > >> /* enum v4l2_ctrl_type type values */ > >> #define V4L2_CTRL_TYPE_HEVC_SPS 0x0120 > >>=20 > >> @@ -316,6 +317,8 @@ struct v4l2_hevc_pred_weight_table { > >>=20 > >> * > >> * @bit_size: size (in bits) of the current slice data > >> * @data_bit_offset: offset (in bits) to the video data in the curre= nt > >>=20 > >> slice data + * @num_entry_point_offsets: specifies the number of entry > >> point offset syntax + * elements in the slice > >=20 > > header. > >=20 > >> * @nal_unit_type: specifies the coding type of the slice (B, P or I) > >> * @nuh_temporal_id_plus1: minus 1 specifies a temporal identifier f= or > >> the > >>=20 > >> NAL unit * @slice_type: see V4L2_HEVC_SLICE_TYPE_{} > >> @@ -358,7 +361,7 @@ struct v4l2_hevc_pred_weight_table { > >>=20 > >> struct v4l2_ctrl_hevc_slice_params { > >> =20 > >> __u32 bit_size; > >> __u32 data_bit_offset; > >>=20 > >> - > >> + __u32 num_entry_point_offsets; > >>=20 > >> /* ISO/IEC 23008-2, ITU-T Rec. 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[213.161.3.76]) by smtp.gmail.com with ESMTPSA id bu23-20020a170906a15700b006fec56c57f3sm20658400ejb.178.2022.07.08.09.11.42 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 08 Jul 2022 09:11:43 -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 Subject: Re: Re: [PATCH v12 11/17] media: uapi: Add V4L2_CID_STATELESS_HEVC_ENTRY_POINT_OFFSETS control Date: Fri, 08 Jul 2022 18:11:42 +0200 Message-ID: <4604967.rnE6jSC6OK@kista> In-Reply-To: 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