From patchwork Tue Jun 28 07:57:02 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: Yunke Cao X-Patchwork-Id: 585753 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 89CB6C433EF for ; Tue, 28 Jun 2022 07:58:10 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S243087AbiF1H6E (ORCPT ); Tue, 28 Jun 2022 03:58:04 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:52970 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S243551AbiF1H5p (ORCPT ); Tue, 28 Jun 2022 03:57:45 -0400 Received: from mail-yw1-x1149.google.com (mail-yw1-x1149.google.com [IPv6:2607:f8b0:4864:20::1149]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 3394313FA7 for ; Tue, 28 Jun 2022 00:57:44 -0700 (PDT) Received: by mail-yw1-x1149.google.com with SMTP id 00721157ae682-31ba792c793so46924127b3.20 for ; Tue, 28 Jun 2022 00:57:44 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20210112; h=date:in-reply-to:message-id:mime-version:references:subject:from:to :cc:content-transfer-encoding; bh=aIbHKbVVcaZVM4752YjpEFdZQCRYFrEKvf1iqr1v6tU=; b=oydepxdL9EIhOyT5K3L5QeA343Lx3DF8Irejv8eqsq3/bc8so60fhsTQgZbd6nLC1s XuniwmgfE1TU28yCEj2OieNEwPcRv91aSSThdyLieCBieedd3atoqFYd+u4P8mwoq/LK qrS0lsVZlsNm/n0Q9lbjz24CzVIN2KBeTzzU86/gO/aHYv0JAFQcv6RTD5QE0iifZV+1 mFk0c+J5xxV3yAAW48fBHgu+LUwIJTQDN4cF4U1iU2NBnH474yZHctw2xPk8VOhSp1dQ 4hQnZueRqekvFesibX1K2qCuxdquuAuHOHC59b6KbvIoJTrAbHGbe8KE8hsCCXLa7FPb ljXQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:date:in-reply-to:message-id:mime-version :references:subject:from:to:cc:content-transfer-encoding; bh=aIbHKbVVcaZVM4752YjpEFdZQCRYFrEKvf1iqr1v6tU=; b=J484YFp9EcqF51EHzbxCieBtIIGQHB9MtdDIHQS+80aADkAzBtOb47Tdb0FY8IiEUJ bCGoo1jaA58oIfzrvspjxdT1OFgx+YW4Hlc1mTlqpPbSkFNQMVBUlyGtKBmXpPv4FeSD bPCAShHzWlfXS3IiRlMuASVwgEH50GieJYPI7XhQfi0Kw1gVc4j/2s0Fd4qplwqDRp3D WzeMUYDhPoAI2IEgSgcI5anrG9CxxpqoDjmFJWjVrRMEN5eaXtypfy4P7u/83yKjn0y/ U8xPJpbp0bM6O3JYJsZor8pJQWNbwMNi5LRzWZ/fuNvMvXQGnUnauqa7+Wd8r1op79f+ lTPA== X-Gm-Message-State: AJIora8uPrwDHLskCnRA/Tc8LVw1eDbNcH3EdD3XUr0mAig++b8ifHxN 2s7vE4eWuWpSAQS2W3bn7wJvx0P0OMo= X-Google-Smtp-Source: AGRyM1tIowpdcqdpLuYbwAevXdRvy74xHNPctloEva3gHz6Xql2Qf7Cl9gYrDFed21UMy7D8XSxIMF1l4bI= X-Received: from yunkec1.tok.corp.google.com ([2401:fa00:8f:203:983d:14d6:e059:135f]) (user=yunkec job=sendgmr) by 2002:a81:990f:0:b0:2f8:c347:d11a with SMTP id q15-20020a81990f000000b002f8c347d11amr20012421ywg.507.1656403063541; Tue, 28 Jun 2022 00:57:43 -0700 (PDT) Date: Tue, 28 Jun 2022 16:57:02 +0900 In-Reply-To: <20220628075705.2278044-1-yunkec@google.com> Message-Id: <20220628075705.2278044-5-yunkec@google.com> Mime-Version: 1.0 References: <20220628075705.2278044-1-yunkec@google.com> X-Mailer: git-send-email 2.37.0.rc0.161.g10f37bed90-goog Subject: [PATCH v7 4/7] media: uvcvideo: implement UVC v1.5 ROI From: Yunke Cao To: Hans Verkuil , Laurent Pinchart , Nicolas Dufresne , Mauro Carvalho Chehab Cc: Tomasz Figa , Sergey Senozhatsky , Ricardo Ribalda , linux-media@vger.kernel.org, Yunke Cao Precedence: bulk List-ID: X-Mailing-List: linux-media@vger.kernel.org Implement support for ROI as described in UVC 1.5: 4.2.2.1.20 Digital Region of Interest (ROI) Control ROI control is implemented using V4L2 control API as two uvc-specific controls: V4L2_CID_UVC_REGION_OF_INTEREST_RECT and V4L2_CID_UVC_REGION_OF_INTEREST_AUTO. Signed-off-by: Yunke Cao --- drivers/media/usb/uvc/uvc_ctrl.c | 146 ++++++++++++++++++++++++++++- drivers/media/usb/uvc/uvc_v4l2.c | 5 +- drivers/media/usb/uvc/uvcvideo.h | 7 ++ include/uapi/linux/usb/video.h | 1 + include/uapi/linux/uvcvideo.h | 13 +++ include/uapi/linux/v4l2-controls.h | 8 ++ 6 files changed, 178 insertions(+), 2 deletions(-) diff --git a/drivers/media/usb/uvc/uvc_ctrl.c b/drivers/media/usb/uvc/uvc_ctrl.c index 508ee04afbcd..00482269233a 100644 --- a/drivers/media/usb/uvc/uvc_ctrl.c +++ b/drivers/media/usb/uvc/uvc_ctrl.c @@ -355,6 +355,23 @@ static const struct uvc_control_info uvc_ctrls[] = { .flags = UVC_CTRL_FLAG_GET_CUR | UVC_CTRL_FLAG_AUTO_UPDATE, }, + /* UVC_CTRL_FLAG_AUTO_UPDATE is needed because the RoI may get updated + * by sensors. + * "This RoI should be the same as specified in most recent SET_CUR + * except in the case where the ‘Auto Detect and Track’ and/or + * ‘Image Stabilization’ bit have been set." + * 4.2.2.1.20 Digital Region of Interest (ROI) Control + */ + { + .entity = UVC_GUID_UVC_CAMERA, + .selector = UVC_CT_REGION_OF_INTEREST_CONTROL, + .index = 21, + .size = 10, + .flags = UVC_CTRL_FLAG_SET_CUR | UVC_CTRL_FLAG_GET_CUR + | UVC_CTRL_FLAG_GET_MIN | UVC_CTRL_FLAG_GET_MAX + | UVC_CTRL_FLAG_GET_DEF + | UVC_CTRL_FLAG_AUTO_UPDATE, + }, }; static const u32 uvc_control_classes[] = { @@ -429,6 +446,64 @@ static void uvc_ctrl_set_rel_speed(struct uvc_control_mapping *mapping, data[first+1] = min_t(int, abs(value), 0xff); } +static void uvc_to_v4l2_rect(struct v4l2_rect *v4l2_rect, + const struct uvc_rect *uvc_rect) +{ + v4l2_rect->top = uvc_rect->top; + v4l2_rect->left = uvc_rect->left; + v4l2_rect->height = uvc_rect->bottom - uvc_rect->top + 1; + v4l2_rect->width = uvc_rect->right - uvc_rect->left + 1; +} + +static int v4l2_to_uvc_rect(struct uvc_rect *uvc_rect, + const struct v4l2_rect *v4l2_rect) +{ + // Safely converts s32 and u32 to u16. + if (v4l2_rect->top > U16_MAX || v4l2_rect->top < 0 || + v4l2_rect->left > U16_MAX || v4l2_rect->left < 0 || + v4l2_rect->height > U16_MAX || v4l2_rect->height == 0 || + v4l2_rect->width > U16_MAX || v4l2_rect->width == 0 || + v4l2_rect->height + v4l2_rect->top - 1 > U16_MAX || + v4l2_rect->width + v4l2_rect->left - 1 > U16_MAX) + return -ERANGE; + + uvc_rect->top = v4l2_rect->top; + uvc_rect->left = v4l2_rect->left; + uvc_rect->bottom = v4l2_rect->height + v4l2_rect->top - 1; + uvc_rect->right = v4l2_rect->width + v4l2_rect->left - 1; + return 0; +} + +static int uvc_get_array_rect(struct uvc_control_mapping *mapping, + const u8 *data, u8 *data_out) +{ + struct uvc_rect *uvc_rect; + + if (WARN_ON(mapping->offset % 8 || mapping->size % 8)) + return -EINVAL; + if (WARN_ON(mapping->size / 8 != sizeof(struct uvc_rect))) + return -EINVAL; + + uvc_rect = (struct uvc_rect *)(data + mapping->offset / 8); + uvc_to_v4l2_rect((struct v4l2_rect *)data_out, uvc_rect); + + return 0; +} + +static int uvc_set_array_rect(struct uvc_control_mapping *mapping, + const u8 *data_in, u8 *data) +{ + struct uvc_rect *uvc_rect; + + if (WARN_ON(mapping->offset % 8 || mapping->size % 8)) + return -EINVAL; + if (WARN_ON(mapping->size / 8 != sizeof(struct uvc_rect))) + return -EINVAL; + + uvc_rect = (struct uvc_rect *)(data + mapping->offset / 8); + return v4l2_to_uvc_rect(uvc_rect, (struct v4l2_rect *)data_in); +} + static const struct uvc_control_mapping uvc_ctrl_mappings[] = { { .id = V4L2_CID_BRIGHTNESS, @@ -728,6 +803,26 @@ static const struct uvc_control_mapping uvc_ctrl_mappings[] = { .v4l2_type = V4L2_CTRL_TYPE_BOOLEAN, .data_type = UVC_CTRL_DATA_TYPE_BOOLEAN, }, + { + .id = V4L2_CID_UVC_REGION_OF_INTEREST_RECT, + .entity = UVC_GUID_UVC_CAMERA, + .selector = UVC_CT_REGION_OF_INTEREST_CONTROL, + .size = 64, + .offset = 0, + .v4l2_type = V4L2_CTRL_TYPE_RECT, + .data_type = UVC_CTRL_DATA_TYPE_RECT, + .get_array = uvc_get_array_rect, + .set_array = uvc_set_array_rect, + }, + { + .id = V4L2_CID_UVC_REGION_OF_INTEREST_AUTO, + .entity = UVC_GUID_UVC_CAMERA, + .selector = UVC_CT_REGION_OF_INTEREST_CONTROL, + .size = 16, + .offset = 64, + .v4l2_type = V4L2_CTRL_TYPE_BITMASK, + .data_type = UVC_CTRL_DATA_TYPE_BITMASK, + }, }; /* ------------------------------------------------------------------------ @@ -1061,7 +1156,16 @@ static int __uvc_ctrl_get_compound_to_user(struct uvc_control_mapping *mapping, if (WARN_ON(!mapping->size % 8)) return -EINVAL; - size = mapping->size / 8; + switch (mapping->v4l2_type) { + case V4L2_CTRL_TYPE_RECT: + size = sizeof(struct v4l2_rect); + break; + + default: + size = mapping->size / 8; + break; + } + if (xctrl->size < size) { xctrl->size = size; return -ENOSPC; @@ -2578,6 +2682,40 @@ static void uvc_ctrl_prune_entity(struct uvc_device *dev, } } +static int uvc_ctrl_init_roi(struct uvc_device *dev, struct uvc_control *ctrl) +{ + int ret; + + ret = uvc_query_ctrl(dev, UVC_GET_DEF, ctrl->entity->id, dev->intfnum, + UVC_CT_REGION_OF_INTEREST_CONTROL, + uvc_ctrl_data(ctrl, UVC_CTRL_DATA_DEF), + ctrl->info.size); + if (ret) + goto out; + + /* + * Most firmwares have wrong GET_CURRENT configuration. E.g. it's + * below GET_MIN, or have rectangle coordinates mixed up. This + * causes problems sometimes, because we are unable to set + * auto-controls value without first setting ROI rectangle to + * valid configuration. + * + * We expect that default configuration is always correct and + * is within the GET_MIN / GET_MAX boundaries. + * + * Set current ROI configuration to GET_DEF, so that we will + * always have properly configured ROI. + */ + ret = uvc_query_ctrl(dev, UVC_SET_CUR, 1, dev->intfnum, + UVC_CT_REGION_OF_INTEREST_CONTROL, + uvc_ctrl_data(ctrl, UVC_CTRL_DATA_DEF), + ctrl->info.size); +out: + if (ret) + dev_err(&dev->udev->dev, "Failed to fixup ROI (%d).\n", ret); + return ret; +} + /* * Add control information and hardcoded stock control mappings to the given * device. @@ -2590,6 +2728,7 @@ static void uvc_ctrl_init_ctrl(struct uvc_video_chain *chain, const struct uvc_control_mapping *mapping = uvc_ctrl_mappings; const struct uvc_control_mapping *mend = mapping + ARRAY_SIZE(uvc_ctrl_mappings); + const u8 camera_entity[16] = UVC_GUID_UVC_CAMERA; /* XU controls initialization requires querying the device for control * information. As some buggy UVC devices will crash when queried @@ -2610,6 +2749,11 @@ static void uvc_ctrl_init_ctrl(struct uvc_video_chain *chain, * GET_INFO on standard controls. */ uvc_ctrl_get_flags(chain->dev, ctrl, &ctrl->info); + + if (ctrl->info.selector == + UVC_CT_REGION_OF_INTEREST_CONTROL && + uvc_entity_match_guid(ctrl->entity, camera_entity)) + uvc_ctrl_init_roi(chain->dev, ctrl); break; } } diff --git a/drivers/media/usb/uvc/uvc_v4l2.c b/drivers/media/usb/uvc/uvc_v4l2.c index 0366d05895a9..aad61af36271 100644 --- a/drivers/media/usb/uvc/uvc_v4l2.c +++ b/drivers/media/usb/uvc/uvc_v4l2.c @@ -998,7 +998,10 @@ static int uvc_ioctl_query_ext_ctrl(struct file *file, void *fh, qec->step = qc.step; qec->default_value = qc.default_value; qec->flags = qc.flags; - qec->elem_size = 4; + if (qc.type == V4L2_CTRL_TYPE_RECT) + qec->elem_size = sizeof(struct v4l2_rect); + else + qec->elem_size = 4; qec->elems = 1; qec->nr_of_dims = 0; memset(qec->dims, 0, sizeof(qec->dims)); diff --git a/drivers/media/usb/uvc/uvcvideo.h b/drivers/media/usb/uvc/uvcvideo.h index 2f9b75faae83..9ff95bbad251 100644 --- a/drivers/media/usb/uvc/uvcvideo.h +++ b/drivers/media/usb/uvc/uvcvideo.h @@ -431,6 +431,13 @@ struct uvc_streaming_header { u8 bTriggerUsage; }; +struct uvc_rect { + u16 top; + u16 left; + u16 bottom; + u16 right; +} __packed; + enum uvc_buffer_state { UVC_BUF_STATE_IDLE = 0, UVC_BUF_STATE_QUEUED = 1, diff --git a/include/uapi/linux/usb/video.h b/include/uapi/linux/usb/video.h index bfdae12cdacf..9076a444758a 100644 --- a/include/uapi/linux/usb/video.h +++ b/include/uapi/linux/usb/video.h @@ -104,6 +104,7 @@ #define UVC_CT_ROLL_ABSOLUTE_CONTROL 0x0f #define UVC_CT_ROLL_RELATIVE_CONTROL 0x10 #define UVC_CT_PRIVACY_CONTROL 0x11 +#define UVC_CT_REGION_OF_INTEREST_CONTROL 0x14 /* A.9.5. Processing Unit Control Selectors */ #define UVC_PU_CONTROL_UNDEFINED 0x00 diff --git a/include/uapi/linux/uvcvideo.h b/include/uapi/linux/uvcvideo.h index 8288137387c0..e2feee15cb1b 100644 --- a/include/uapi/linux/uvcvideo.h +++ b/include/uapi/linux/uvcvideo.h @@ -16,6 +16,7 @@ #define UVC_CTRL_DATA_TYPE_BOOLEAN 3 #define UVC_CTRL_DATA_TYPE_ENUM 4 #define UVC_CTRL_DATA_TYPE_BITMASK 5 +#define UVC_CTRL_DATA_TYPE_RECT 6 /* Control flags */ #define UVC_CTRL_FLAG_SET_CUR (1 << 0) @@ -36,6 +37,18 @@ UVC_CTRL_FLAG_GET_MAX | UVC_CTRL_FLAG_GET_RES | \ UVC_CTRL_FLAG_GET_DEF) +/* V4L2 private controls */ +#define V4L2_CID_UVC_REGION_OF_INTEREST_RECT (V4L2_CID_CAMERA_UVC_BASE + 1) +#define V4L2_CID_UVC_REGION_OF_INTEREST_AUTO (V4L2_CID_CAMERA_UVC_BASE + 2) +#define V4L2_UVC_REGION_OF_INTEREST_AUTO_EXPOSURE (1 << 0) +#define V4L2_UVC_REGION_OF_INTEREST_AUTO_IRIS (1 << 1) +#define V4L2_UVC_REGION_OF_INTEREST_AUTO_WHITE_BALANCE (1 << 2) +#define V4L2_UVC_REGION_OF_INTEREST_AUTO_FOCUS (1 << 3) +#define V4L2_UVC_REGION_OF_INTEREST_AUTO_FACE_DETECT (1 << 4) +#define V4L2_UVC_REGION_OF_INTEREST_AUTO_DETECT_AND_TRACK (1 << 5) +#define V4L2_UVC_REGION_OF_INTEREST_AUTO_IMAGE_STABILIZATION (1 << 6) +#define V4L2_UVC_REGION_OF_INTEREST_AUTO_HIGHER_QUALITY (1 << 7) + struct uvc_menu_info { __u32 value; __u8 name[32]; diff --git a/include/uapi/linux/v4l2-controls.h b/include/uapi/linux/v4l2-controls.h index dfff69ed88f7..d85be46e46f2 100644 --- a/include/uapi/linux/v4l2-controls.h +++ b/include/uapi/linux/v4l2-controls.h @@ -1013,6 +1013,14 @@ enum v4l2_auto_focus_range { #define V4L2_CID_CAMERA_SENSOR_ROTATION (V4L2_CID_CAMERA_CLASS_BASE+35) +/* CAMERA-class private control IDs */ + +/* + * The base for the uvc driver controls. See linux/uvcvideo.h for the list + * of controls. We reserve 16 controls for this driver. + */ +#define V4L2_CID_CAMERA_UVC_BASE (V4L2_CID_CAMERA_CLASS_BASE + 0x1000) + /* FM Modulator class control IDs */ #define V4L2_CID_FM_TX_CLASS_BASE (V4L2_CTRL_CLASS_FM_TX | 0x900)