From patchwork Mon May 27 00:15:43 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: =?utf-8?q?Niklas_S=C3=B6derlund?= X-Patchwork-Id: 1310 Return-Path: Received: from vsp-unauthed02.binero.net (vsp-unauthed02.binero.net [195.74.38.227]) by lancelot.ideasonboard.com (Postfix) with ESMTPS id B4742618F9 for ; Mon, 27 May 2019 02:16:14 +0200 (CEST) X-Halon-ID: a199a472-8014-11e9-8ab4-005056917a89 Authorized-sender: niklas@soderlund.pp.se Received: from bismarck.berto.se (unknown [89.233.230.99]) by bin-vsp-out-01.atm.binero.net (Halon) with ESMTPA id a199a472-8014-11e9-8ab4-005056917a89; Mon, 27 May 2019 02:16:11 +0200 (CEST) From: =?utf-8?q?Niklas_S=C3=B6derlund?= To: libcamera-devel@lists.libcamera.org Date: Mon, 27 May 2019 02:15:43 +0200 Message-Id: <20190527001543.13593-18-niklas.soderlund@ragnatech.se> X-Mailer: git-send-email 2.21.0 In-Reply-To: <20190527001543.13593-1-niklas.soderlund@ragnatech.se> References: <20190527001543.13593-1-niklas.soderlund@ragnatech.se> MIME-Version: 1.0 Subject: [libcamera-devel] [PATCH 17/17] libcamera: pipeline: uvcvideo: Add format information and validation X-BeenThere: libcamera-devel@lists.libcamera.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 27 May 2019 00:16:15 -0000 Extend the uvcvideo pipeline with format information and validation. The format information is gathered by enumerating the v4l2 device. This enumeration approach is valid for UVC as it has a static and simple media graph. Signed-off-by: Niklas Söderlund --- src/libcamera/pipeline/uvcvideo.cpp | 46 +++++++++++++++++++++++------ 1 file changed, 37 insertions(+), 9 deletions(-) diff --git a/src/libcamera/pipeline/uvcvideo.cpp b/src/libcamera/pipeline/uvcvideo.cpp index 45260f34c8f5daba..ce9f281891a8bc5e 100644 --- a/src/libcamera/pipeline/uvcvideo.cpp +++ b/src/libcamera/pipeline/uvcvideo.cpp @@ -95,18 +95,42 @@ CameraConfiguration::Status UVCCameraConfiguration::validate() } StreamConfiguration &cfg = config_[0]; + const StreamFormats &formats = cfg.formats(); - /* \todo: Validate the configuration against the device capabilities. */ const unsigned int pixelFormat = cfg.pixelFormat; const Size size = cfg.size; - cfg.pixelFormat = V4L2_PIX_FMT_YUYV; - cfg.size = { 640, 480 }; + bool found = false; + for (unsigned int pixfmt : formats.pixelformats()) { + if (pixfmt == pixelFormat) { + found = true; + break; + } + } + if (!found) + cfg.pixelFormat = formats.pixelformats().front(); - if (cfg.pixelFormat != pixelFormat || cfg.size != size) { + if (cfg.pixelFormat != pixelFormat) { LOG(UVC, Debug) - << "Adjusting configuration from " << cfg.toString() - << " to " << cfg.size.toString() << "-YUYV"; + << "Adjusting pixel format from " << pixelFormat + << " to " << cfg.pixelFormat; + status = Adjusted; + } + + const std::vector &formatSizes = formats.sizes(cfg.pixelFormat); + cfg.size = formatSizes.front(); + for (const Size &formatsSize : formatSizes) { + if (formatsSize <= size) + cfg.size = formatsSize; + + if (formatsSize == size) + break; + } + + if (cfg.size != size) { + LOG(UVC, Debug) + << "Adjusting size from " << size.toString() + << " to " << cfg.size.toString(); status = Adjusted; } @@ -123,14 +147,18 @@ PipelineHandlerUVC::PipelineHandlerUVC(CameraManager *manager) CameraConfiguration *PipelineHandlerUVC::generateConfiguration(Camera *camera, const StreamRoles &roles) { + UVCCameraData *data = cameraData(camera); CameraConfiguration *config = new UVCCameraConfiguration(); if (roles.empty()) return config; - StreamConfiguration cfg{}; - cfg.pixelFormat = V4L2_PIX_FMT_YUYV; - cfg.size = { 640, 480 }; + V4L2DeviceFormats v4l2formats = data->video_->formats(); + StreamFormats formats(v4l2formats.data()); + StreamConfiguration cfg(formats); + + cfg.pixelFormat = formats.pixelformats().front(); + cfg.size = formats.sizes(cfg.pixelFormat).back(); cfg.bufferCount = 4; config->addConfiguration(cfg);