From patchwork Wed May 29 15:43:41 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Laurent Pinchart X-Patchwork-Id: 20124 Return-Path: X-Original-To: parsemail@patchwork.libcamera.org Delivered-To: parsemail@patchwork.libcamera.org Received: from lancelot.ideasonboard.com (lancelot.ideasonboard.com [92.243.16.209]) by patchwork.libcamera.org (Postfix) with ESMTPS id 54180BDE6B for ; Wed, 29 May 2024 15:44:12 +0000 (UTC) Received: from lancelot.ideasonboard.com (localhost [IPv6:::1]) by lancelot.ideasonboard.com (Postfix) with ESMTP id E9F4E634BD; Wed, 29 May 2024 17:44:11 +0200 (CEST) Authentication-Results: lancelot.ideasonboard.com; dkim=pass (1024-bit key; unprotected) header.d=ideasonboard.com header.i=@ideasonboard.com header.b="pcrICJ47"; dkim-atps=neutral Received: from perceval.ideasonboard.com (perceval.ideasonboard.com [213.167.242.64]) by lancelot.ideasonboard.com (Postfix) with ESMTPS id 2151D634BB for ; Wed, 29 May 2024 17:44:01 +0200 (CEST) Received: from pendragon.ideasonboard.com (81-175-209-231.bb.dnainternet.fi [81.175.209.231]) by perceval.ideasonboard.com (Postfix) with ESMTPSA id 6C97E4AB for ; Wed, 29 May 2024 17:43:57 +0200 (CEST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=ideasonboard.com; s=mail; t=1716997437; bh=WKZqisugEXlgk8YXogk5bjUTxJGzGMA5529Nw4L5e1A=; h=From:To:Subject:Date:In-Reply-To:References:From; b=pcrICJ47Q6ktq7q8cGBnZ/R6u8CVqJRujCW96M0D5vUccRrRRzO22Da/kxjeUkypK t5wxX90gwxVFibay2j1LdaC5IVcRlZKz66U5yua7CyeaDQYgCu5mGEqkBvUdPH53qD Fcwra2QbCvDZaf2xyOGlG9W50d3EMwCmjznJk+9A= From: Laurent Pinchart To: libcamera-devel@lists.libcamera.org Subject: [PATCH v2 6/6] pipeline: vimc: Don't hardcode scaling factor with recent kernels Date: Wed, 29 May 2024 18:43:41 +0300 Message-ID: <20240529154341.10426-7-laurent.pinchart@ideasonboard.com> X-Mailer: git-send-email 2.44.1 In-Reply-To: <20240529154341.10426-1-laurent.pinchart@ideasonboard.com> References: <20240529154341.10426-1-laurent.pinchart@ideasonboard.com> MIME-Version: 1.0 X-BeenThere: libcamera-devel@lists.libcamera.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: libcamera-devel-bounces@lists.libcamera.org Sender: "libcamera-devel" Starting in kernel v5.16, the vimc driver stopped hardcoding the scaler factor. Use this to lift constraints on the camera configuration, and in particular on the exotic output size alignment to a multiple of 6. As a result, vimc-based cameras can more easily match common display resolutions. Signed-off-by: Laurent Pinchart Reviewed-by: Kieran Bingham --- src/libcamera/pipeline/vimc/vimc.cpp | 47 +++++++++++++++++++--------- 1 file changed, 33 insertions(+), 14 deletions(-) diff --git a/src/libcamera/pipeline/vimc/vimc.cpp b/src/libcamera/pipeline/vimc/vimc.cpp index c7650432ddcc..0ec9928eec23 100644 --- a/src/libcamera/pipeline/vimc/vimc.cpp +++ b/src/libcamera/pipeline/vimc/vimc.cpp @@ -114,6 +114,9 @@ static const std::map pixelformats{ { formats::BGR888, MEDIA_BUS_FMT_RGB888_1X24 }, }; +static constexpr Size kMinSize{ 16, 16 }; +static constexpr Size kMaxSize{ 4096, 2160 }; + } /* namespace */ VimcCameraConfiguration::VimcCameraConfiguration(VimcCameraData *data) @@ -153,14 +156,20 @@ CameraConfiguration::Status VimcCameraConfiguration::validate() const Size size = cfg.size; /* - * The scaler hardcodes a x3 scale-up ratio, and the sensor output size - * is aligned to two pixels in both directions. The output width and - * height thus have to be multiples of 6. + * The sensor output size is aligned to two pixels in both directions. + * Additionally, prior to v5.16, the scaler hardcodes a x3 scale-up + * ratio, requiring the output width and height to be multiples of 6. */ - cfg.size.width = std::max(48U, std::min(4096U, cfg.size.width)); - cfg.size.height = std::max(48U, std::min(2160U, cfg.size.height)); - cfg.size.width -= cfg.size.width % 6; - cfg.size.height -= cfg.size.height % 6; + Size minSize{ kMinSize }; + unsigned int alignment = 2; + + if (data_->media_->version() < KERNEL_VERSION(5, 16, 0)) { + minSize *= 3; + alignment *= 3; + } + + cfg.size.expandTo(minSize).boundTo(kMaxSize) + .alignDownTo(alignment, alignment); if (cfg.size != size) { LOG(VIMC, Debug) @@ -216,10 +225,12 @@ PipelineHandlerVimc::generateConfiguration(Camera *camera, } } - /* The scaler hardcodes a x3 scale-up ratio. */ - std::vector sizes{ - SizeRange{ { 48, 48 }, { 4096, 2160 } } - }; + /* Prior to v5.16, the scaler hardcodes a x3 scale-up ratio. */ + Size minSize{ kMinSize }; + if (data->media_->version() < KERNEL_VERSION(5, 16, 0)) + minSize *= 3; + + std::vector sizes{ { minSize, kMaxSize } }; formats[pixelformat.first] = sizes; } @@ -242,10 +253,18 @@ int PipelineHandlerVimc::configure(Camera *camera, CameraConfiguration *config) StreamConfiguration &cfg = config->at(0); int ret; - /* The scaler hardcodes a x3 scale-up ratio. */ + /* + * Prior to v5.16, the scaler hardcodes a x3 scale-up ratio. For newer + * kernels, use a sensor resolution of 1920x1080 and let the scaler + * produce the requested stream size. + */ + Size sensorSize{ 1920, 1080 }; + if (data->media_->version() < KERNEL_VERSION(5, 16, 0)) + sensorSize = { cfg.size.width / 3, cfg.size.height / 3 }; + V4L2SubdeviceFormat subformat = {}; subformat.code = MEDIA_BUS_FMT_SGRBG8_1X8; - subformat.size = { cfg.size.width / 3, cfg.size.height / 3 }; + subformat.size = sensorSize; ret = data->sensor_->setFormat(&subformat); if (ret) @@ -293,7 +312,7 @@ int PipelineHandlerVimc::configure(Camera *camera, CameraConfiguration *config) * vimc driver will fail pipeline validation. */ format.fourcc = V4L2PixelFormat(V4L2_PIX_FMT_SGRBG8); - format.size = { cfg.size.width / 3, cfg.size.height / 3 }; + format.size = sensorSize; ret = data->raw_->setFormat(&format); if (ret)