From patchwork Thu Apr 7 15:29:34 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Benjamin Gaignard X-Patchwork-Id: 559856 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 2F012C433F5 for ; Thu, 7 Apr 2022 15:30:12 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1344848AbiDGPcI (ORCPT ); Thu, 7 Apr 2022 11:32:08 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:45232 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1344806AbiDGPb6 (ORCPT ); Thu, 7 Apr 2022 11:31:58 -0400 Received: from bhuna.collabora.co.uk (bhuna.collabora.co.uk [IPv6:2a00:1098:0:82:1000:25:2eeb:e3e3]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id DFADBC19; Thu, 7 Apr 2022 08:29:57 -0700 (PDT) Received: from benjamin-XPS-13-9310.. (unknown [IPv6:2a01:e0a:120:3210:4da4:8da5:b6b4:93c]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) (Authenticated sender: benjamin.gaignard) by bhuna.collabora.co.uk (Postfix) with ESMTPSA id 5CD2D1F467BA; Thu, 7 Apr 2022 16:29:55 +0100 (BST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=collabora.com; s=mail; t=1649345395; bh=TVL+zVmzoLmzP/o8wAOoYOdZTugG0XjKFVFTzeEuek0=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=FSXCCw3FyICEiP5Funn0nxZVU4QKTOmJE3I58ZFn7Z5w97A93JR7Mk31bX1MUqTL4 sYaYyf+zN2CfdJvTUqR/m+XJQUuL/rJeUoelm/fW0Yt4jML+VmggXvI4N2wkJfN2Wk OtHBSchHkfHZzb4StbE/ugfmxbjtesvelGJiNrnqDvjmPvDCs+9/4lfPZWwAUHfZDD tvsle4UtdSHnrJYhuLA4ma6Pk5WeADjeOR+t2AHOJF9xgYIFzz2oSsJdmkEJJAkPVS 6AY4LM4pwO3xKWgF2hLDu/rHOgITxi4t2JZoy55V90lYTYuLW1NowxoOFo5PRdPrTB riJRncuDXQ7aQ== From: Benjamin Gaignard 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, jernej.skrabec@gmail.com, samuel@sholland.org, nicolas.dufresne@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, sebastian.fricke@collabora.com, Benjamin Gaignard Subject: [PATCH v5 11/17] media: uapi: Add V4L2_CID_STATELESS_HEVC_ENTRY_POINT_OFFSETS control Date: Thu, 7 Apr 2022 17:29:34 +0200 Message-Id: <20220407152940.738159-12-benjamin.gaignard@collabora.com> X-Mailer: git-send-email 2.32.0 In-Reply-To: <20220407152940.738159-1-benjamin.gaignard@collabora.com> References: <20220407152940.738159-1-benjamin.gaignard@collabora.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-media@vger.kernel.org The number of 'entry point offset' could be very variable. Rather than use 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 --- .../userspace-api/media/v4l/ext-ctrls-codec.rst | 11 +++++++++++ drivers/media/v4l2-core/v4l2-ctrls-defs.c | 5 +++++ include/media/hevc-ctrls.h | 5 ++++- 3 files changed, 20 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 1aaf3b84b584..a604dedce17c 100644 --- a/Documentation/userspace-api/media/v4l/ext-ctrls-codec.rst +++ b/Documentation/userspace-api/media/v4l/ext-ctrls-codec.rst @@ -2988,6 +2988,9 @@ 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. * - __u8 - ``nal_unit_type`` - Specifies the coding type of the slice (B, P or I). @@ -3125,6 +3128,14 @@ 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. + ``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 4b68cbe23309..48d385b776b1 100644 --- a/drivers/media/v4l2-core/v4l2-ctrls-defs.c +++ b/drivers/media/v4l2-core/v4l2-ctrls-defs.c @@ -1180,6 +1180,7 @@ 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! */ @@ -1508,6 +1509,10 @@ 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 00abbf930235..97e049ccb966 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;