From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from madras.collabora.co.uk (madras.collabora.co.uk [46.235.227.172]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 7997810E0; Tue, 21 Jun 2022 14:51:06 +0000 (UTC) Received: from nicolas-tpx395.localdomain (192-222-136-102.qc.cable.ebox.net [192.222.136.102]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256) (No client certificate requested) (Authenticated sender: nicolas) by madras.collabora.co.uk (Postfix) with ESMTPSA id 5B97A6601688; Tue, 21 Jun 2022 15:50:56 +0100 (BST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=collabora.com; s=mail; t=1655823058; bh=gH3pOctepXLG6QaAL9GIM0RulPRWKtbflyqgdZBkvXQ=; h=Subject:From:To:Cc:Date:In-Reply-To:References:From; b=k3h6myAq1nJnsdwQZrbuO1He4Rr0cYQHJV3zqTgVl/rAjkjpe/gn6p9WEGnax0yyZ k/RHlWkJVinbdfuP8FNF5HeIZWqyTk7TdJKdil0lpqDXsyOyc8yovUewwrnSi9M4yt 2hdKp5rkd4BOjNIebPd1iOU80yhCGcR7crc6O+n0rz4MkK/Gc35VHgerW2rNyUkrfr 3Gik07h3iet+S3dVFJam+zuScuRRL7QQSYmS2rxTml+7gB74VrjpyRPZufZKlOk3Xr UXzsKfpsHOwhIDDBclmnYoVQEaoNA4zBvV98oED8flogfW1pRoFpFOnmV2DPmAv+G0 o95pGnkQdVE1w== Message-ID: <65c2e2805b40b1d88ac9f380bda53c085bf612e6.camel@collabora.com> Subject: Re: [PATCH v8 14/17] media: hantro: Stop using Hantro dedicated control From: Nicolas Dufresne To: Benjamin Gaignard , Hans Verkuil , 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, samuel@sholland.org, andrzej.p@collabora.com 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 Date: Tue, 21 Jun 2022 10:50:47 -0400 In-Reply-To: References: <20220614083614.240641-1-benjamin.gaignard@collabora.com> <20220614083614.240641-15-benjamin.gaignard@collabora.com> <958ab30f9cfbb14e4a7ea55826064e6a20d5ffd2.camel@collabora.com> Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable User-Agent: Evolution 3.44.2 (3.44.2-1.fc36) Precedence: bulk X-Mailing-List: linux-sunxi@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Le mardi 14 juin 2022 =C3=A0 18:46 +0200, Benjamin Gaignard a =C3=A9crit=C2= =A0: > Le 14/06/2022 =C3=A0 18:23, Nicolas Dufresne a =C3=A9crit=C2=A0: > > Le mardi 14 juin 2022 =C3=A0 17:47 +0200, Hans Verkuil a =C3=A9crit=C2= =A0: > > > On 6/14/22 17:43, Nicolas Dufresne wrote: > > > > Le mardi 14 juin 2022 =C3=A0 15:58 +0200, Hans Verkuil a =C3=A9crit= =C2=A0: > > > > > On 6/14/22 10:36, Benjamin Gaignard wrote: > > > > > > The number of bits to skip in the slice header can be computed > > > > > > in the driver by using sps, pps and decode_params information. > > > > > > This allow to remove Hantro dedicated control. > > > > > allow -> makes it possible > > > > >=20 > > > > > > Signed-off-by: Benjamin Gaignard > > > > > > --- > > > > > > drivers/staging/media/hantro/hantro_drv.c | 36 ----------= - > > > > > > .../staging/media/hantro/hantro_g2_hevc_dec.c | 62 ++++++++++= ++++++++- > > > > > > include/media/hevc-ctrls.h | 13 ---- > > > > > > 3 files changed, 61 insertions(+), 50 deletions(-) > > > > > >=20 > > > > > > diff --git a/drivers/staging/media/hantro/hantro_drv.c b/driver= s/staging/media/hantro/hantro_drv.c > > > > > > index 536c8c374952..5aac3a090480 100644 > > > > > > --- a/drivers/staging/media/hantro/hantro_drv.c > > > > > > +++ b/drivers/staging/media/hantro/hantro_drv.c > > > > > > @@ -304,26 +304,6 @@ static int hantro_jpeg_s_ctrl(struct v4l2_= ctrl *ctrl) > > > > > > return 0; > > > > > > } > > > > > > =20 > > > > > > -static int hantro_hevc_s_ctrl(struct v4l2_ctrl *ctrl) > > > > > > -{ > > > > > > - struct hantro_ctx *ctx; > > > > > > - > > > > > > - ctx =3D container_of(ctrl->handler, > > > > > > - struct hantro_ctx, ctrl_handler); > > > > > > - > > > > > > - vpu_debug(1, "s_ctrl: id =3D %d, val =3D %d\n", ctrl->id, ctr= l->val); > > > > > > - > > > > > > - switch (ctrl->id) { > > > > > > - case V4L2_CID_HANTRO_HEVC_SLICE_HEADER_SKIP: > > > > > > - ctx->hevc_dec.ctrls.hevc_hdr_skip_length =3D ctrl->val; > > > > > > - break; > > > > > > - default: > > > > > > - return -EINVAL; > > > > > > - } > > > > > > - > > > > > > - return 0; > > > > > > -} > > > > > > - > > > > > > static const struct v4l2_ctrl_ops hantro_ctrl_ops =3D { > > > > > > .try_ctrl =3D hantro_try_ctrl, > > > > > > }; > > > > > > @@ -332,10 +312,6 @@ static const struct v4l2_ctrl_ops hantro_j= peg_ctrl_ops =3D { > > > > > > .s_ctrl =3D hantro_jpeg_s_ctrl, > > > > > > }; > > > > > > =20 > > > > > > -static const struct v4l2_ctrl_ops hantro_hevc_ctrl_ops =3D { > > > > > > - .s_ctrl =3D hantro_hevc_s_ctrl, > > > > > > -}; > > > > > > - > > > > > > #define HANTRO_JPEG_ACTIVE_MARKERS (V4L2_JPEG_ACTIVE_MARKER_A= PP0 | \ > > > > > > V4L2_JPEG_ACTIVE_MARKER_COM | \ > > > > > > V4L2_JPEG_ACTIVE_MARKER_DQT | \ > > > > > > @@ -487,18 +463,6 @@ static const struct hantro_ctrl controls[]= =3D { > > > > > > .cfg =3D { > > > > > > .id =3D V4L2_CID_STATELESS_HEVC_SCALING_MATRIX, > > > > > > }, > > > > > > - }, { > > > > > > - .codec =3D HANTRO_HEVC_DECODER, > > > > > > - .cfg =3D { > > > > > > - .id =3D V4L2_CID_HANTRO_HEVC_SLICE_HEADER_SKIP, > > > > > > - .name =3D "Hantro HEVC slice header skip bytes", > > > > > > - .type =3D V4L2_CTRL_TYPE_INTEGER, > > > > > > - .min =3D 0, > > > > > > - .def =3D 0, > > > > > > - .max =3D 0x100, > > > > > > - .step =3D 1, > > > > > > - .ops =3D &hantro_hevc_ctrl_ops, > > > > > > - }, > > > > > > }, { > > > > > > .codec =3D HANTRO_VP9_DECODER, > > > > > > .cfg =3D { > > > > > > diff --git a/drivers/staging/media/hantro/hantro_g2_hevc_dec.c = b/drivers/staging/media/hantro/hantro_g2_hevc_dec.c > > > > > > index d28653d04d20..3be8d6e60bf0 100644 > > > > > > --- a/drivers/staging/media/hantro/hantro_g2_hevc_dec.c > > > > > > +++ b/drivers/staging/media/hantro/hantro_g2_hevc_dec.c > > > > > > @@ -117,6 +117,66 @@ static void prepare_tile_info_buffer(struc= t hantro_ctx *ctx) > > > > > > vpu_debug(1, "%s: no chroma!\n", __func__); > > > > > > } > > > > > > =20 > > > > > > +static unsigned int ceil_log2(unsigned int v) > > > > > > +{ > > > > > > + /* Compute Ceil(Log2(v)) > > > > > > + * Derived from branchless code for integer log2(v) from: > > > > > > + * > > > > > > + */ > > > > > > + unsigned int r, shift; > > > > > > + > > > > > > + v--; > > > > > > + r =3D (v > 0xFFFF) << 4; > > > > > > + v >>=3D r; > > > > > > + shift =3D (v > 0xFF) << 3; > > > > > > + v >>=3D shift; > > > > > > + r |=3D shift; > > > > > > + shift =3D (v > 0xF) << 2; > > > > > > + v >>=3D shift; > > > > > > + r |=3D shift; > > > > > > + shift =3D (v > 0x3) << 1; > > > > > > + v >>=3D shift; > > > > > > + r |=3D shift; > > > > > > + r |=3D (v >> 1); > > > > > > + > > > > > > + return r + 1; > > > > > > +} > > > > > Isn't this identical to fls(v - 1)? See also lib/math/reciprocal_= div.c > > > > > where this is used. > > > > Thanks for pointing this out, I was wondering if there was an equiv= alent, and > > > > never knew there was a relation between log2() and the "last set bi= t". Not sure > > > > about the -1 here though, can you extend ? > > > Based on how lib/math/reciprocal_div.c did it. Also, the ceil_log2 fu= nction > > > starts with v--, while fls doesn't. That said, it's wise to verify th= at that > > > is correct. > > Just for the reference, from lib/math/reciprocal_div.c: > >=20 > > /* ceil(log2(d)) */ > > l =3D fls(d - 1); > >=20 > > Perhaps fls() return position starting from 1 rather then 0 ? >=20 > I have compare the results of ceil_log2(d) vs fls(d-1) > for values between 2 (because sps->num_short_term_ref_pic_sets > 1) and 1= 6 (the maximum number of frames) > they are always the same so I will remove ceil_log2() and use fls(). I've also check on my side few samples, and it indeed seems to be exactly t= he same. >=20 > Regards, > Benjamin >=20 > >=20 > > Nicolas > >=20 > > > Regards, > > >=20 > > > Hans > > >=20 > > > > > Regards, > > > > >=20 > > > > > Hans > > > > >=20 > > > > > > + > > > > > > +static int compute_header_skip_lenght(struct hantro_ctx *ctx) > > > > > > +{ > > > > > > + const struct hantro_hevc_dec_ctrls *ctrls =3D &ctx->hevc_dec.= ctrls; > > > > > > + const struct v4l2_ctrl_hevc_decode_params *decode_params =3D = ctrls->decode_params; > > > > > > + const struct v4l2_ctrl_hevc_sps *sps =3D ctrls->sps; > > > > > > + const struct v4l2_ctrl_hevc_pps *pps =3D ctrls->pps; > > > > > > + int skip =3D 0; > > > > > > + > > > > > > + if (pps->flags & V4L2_HEVC_PPS_FLAG_OUTPUT_FLAG_PRESENT) > > > > > > + /* size of pic_output_flag */ > > > > > > + skip++; > > > > > > + > > > > > > + if (sps->flags & V4L2_HEVC_SPS_FLAG_SEPARATE_COLOUR_PLANE) > > > > > > + /* size of pic_order_cnt_lsb */ > > > > > > + skip +=3D 2; > > > > > > + > > > > > > + if (!(decode_params->flags & V4L2_HEVC_DECODE_PARAM_FLAG_IDR_= PIC)) { > > > > > > + /* size of pic_order_cnt_lsb */ > > > > > > + skip +=3D sps->log2_max_pic_order_cnt_lsb_minus4 + 4; > > > > > > + > > > > > > + /* size of short_term_ref_pic_set_sps_flag */ > > > > > > + skip++; > > > > > > + > > > > > > + if (decode_params->short_term_ref_pic_set_size) > > > > > > + /* size of st_ref_pic_set( num_short_term_ref_pic_sets ) */ > > > > > > + skip +=3D decode_params->short_term_ref_pic_set_size; > > > > > > + else if (sps->num_short_term_ref_pic_sets > 1) > > > > > > + skip +=3D ceil_log2(sps->num_short_term_ref_pic_sets); > > > > > > + > > > > > > + skip +=3D decode_params->long_term_ref_pic_set_size; > > > > > > + } > > > > > > + > > > > > > + return skip; > > > > > > +} > > > > > > + > > > > > > static void set_params(struct hantro_ctx *ctx) > > > > > > { > > > > > > const struct hantro_hevc_dec_ctrls *ctrls =3D &ctx->hevc_dec= .ctrls; > > > > > > @@ -134,7 +194,7 @@ static void set_params(struct hantro_ctx *c= tx) > > > > > > =20 > > > > > > hantro_reg_write(vpu, &g2_output_8_bits, 0); > > > > > > =20 > > > > > > - hantro_reg_write(vpu, &g2_hdr_skip_length, ctrls->hevc_hdr_sk= ip_length); > > > > > > + hantro_reg_write(vpu, &g2_hdr_skip_length, compute_header_ski= p_lenght(ctx)); > > > > > > =20 > > > > > > min_log2_cb_size =3D sps->log2_min_luma_coding_block_size_mi= nus3 + 3; > > > > > > max_log2_ctb_size =3D min_log2_cb_size + sps->log2_diff_max_= min_luma_coding_block_size; > > > > > > diff --git a/include/media/hevc-ctrls.h b/include/media/hevc-ct= rls.h > > > > > > index d6cb3779d190..efc0412ac41e 100644 > > > > > > --- a/include/media/hevc-ctrls.h > > > > > > +++ b/include/media/hevc-ctrls.h > > > > > > @@ -467,17 +467,4 @@ struct v4l2_ctrl_hevc_scaling_matrix { > > > > > > __u8 scaling_list_dc_coef_32x32[2]; > > > > > > }; > > > > > > =20 > > > > > > -/* MPEG-class control IDs specific to the Hantro driver as de= fined by V4L2 */ > > > > > > -#define V4L2_CID_CODEC_HANTRO_BASE (V4L2_CTRL_CLASS_CODEC |= 0x1200) > > > > > > -/* > > > > > > - * V4L2_CID_HANTRO_HEVC_SLICE_HEADER_SKIP - > > > > > > - * the number of data (in bits) to skip in the > > > > > > - * slice segment header. > > > > > > - * If non-IDR, the bits to be skipped go from syntax element "= pic_output_flag" > > > > > > - * to before syntax element "slice_temporal_mvp_enabled_flag". > > > > > > - * If IDR, the skipped bits are just "pic_output_flag" > > > > > > - * (separate_colour_plane_flag is not supported). > > > > > > - */ > > > > > > -#define V4L2_CID_HANTRO_HEVC_SLICE_HEADER_SKIP (V4L2_CID_CODEC= _HANTRO_BASE + 0) > > > > > > - > > > > > > #endif 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 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b=k3h6myAq1nJnsdwQZrbuO1He4Rr0cYQHJV3zqTgVl/rAjkjpe/gn6p9WEGnax0yyZ k/RHlWkJVinbdfuP8FNF5HeIZWqyTk7TdJKdil0lpqDXsyOyc8yovUewwrnSi9M4yt 2hdKp5rkd4BOjNIebPd1iOU80yhCGcR7crc6O+n0rz4MkK/Gc35VHgerW2rNyUkrfr 3Gik07h3iet+S3dVFJam+zuScuRRL7QQSYmS2rxTml+7gB74VrjpyRPZufZKlOk3Xr UXzsKfpsHOwhIDDBclmnYoVQEaoNA4zBvV98oED8flogfW1pRoFpFOnmV2DPmAv+G0 o95pGnkQdVE1w== Message-ID: <65c2e2805b40b1d88ac9f380bda53c085bf612e6.camel@collabora.com> Subject: Re: [PATCH v8 14/17] media: hantro: Stop using Hantro dedicated control From: Nicolas Dufresne To: Benjamin Gaignard , Hans Verkuil , 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, samuel@sholland.org, andrzej.p@collabora.com 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 Date: Tue, 21 Jun 2022 10:50:47 -0400 In-Reply-To: References: <20220614083614.240641-1-benjamin.gaignard@collabora.com> <20220614083614.240641-15-benjamin.gaignard@collabora.com> <958ab30f9cfbb14e4a7ea55826064e6a20d5ffd2.camel@collabora.com> User-Agent: Evolution 3.44.2 (3.44.2-1.fc36) MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20220621_075105_786908_46E15669 X-CRM114-Status: GOOD ( 39.68 ) X-BeenThere: linux-rockchip@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: Upstream kernel work for Rockchip platforms List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Sender: "Linux-rockchip" Errors-To: linux-rockchip-bounces+linux-rockchip=archiver.kernel.org@lists.infradead.org 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