From patchwork Fri Jul 15 13:50:04 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jacopo Mondi X-Patchwork-Id: 16642 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 1BA42BE173 for ; Fri, 15 Jul 2022 13:50:28 +0000 (UTC) Received: from lancelot.ideasonboard.com (localhost [IPv6:::1]) by lancelot.ideasonboard.com (Postfix) with ESMTP id D2BFF63316; Fri, 15 Jul 2022 15:50:27 +0200 (CEST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=libcamera.org; s=mail; t=1657893027; bh=d+ZqRzYN9HV4NS0KM8HZIvMH+JcHoEMolqRjFp5wA/c=; h=To:Date:In-Reply-To:References:Subject:List-Id:List-Unsubscribe: List-Archive:List-Post:List-Help:List-Subscribe:From:Reply-To:Cc: From; b=RxJa8qy4QkhVGxCv5Mnk7zuNcRcn7dyKYa6ZPJ3mbDiZXToHma+y0jCj9LKKmexWz l0ry9KLl2bArGuxp0QX8FLHudf30YNf7YMWnHTUf00FRMcIr6QUBOeCA00kcPrXqYZ 4Cyr6/PiILysdeDrkgrm+oQ+zc+QCFsuMfAjUC5ZIpMNpdCC/FuyJPJAmonq0YNAXu sShe0Y7YsDrPgWWqwT5txrkfrp5ARCI7pyIq+6mhy5GsNk2dMGc/MXvGMBKketeJD3 EOT1k287/dp70mBURsRk8rAC3FCLF5JWoeSw1Em0hrck112BUWcvTP5OlCpUBj3YTJ wBC1ukvnd6gyg== Received: from relay3-d.mail.gandi.net (relay3-d.mail.gandi.net [IPv6:2001:4b98:dc4:8::223]) by lancelot.ideasonboard.com (Postfix) with ESMTPS id 9B4D96331A for ; Fri, 15 Jul 2022 15:50:24 +0200 (CEST) Received: (Authenticated sender: jacopo@jmondi.org) by mail.gandi.net (Postfix) with ESMTPSA id 757566000C; Fri, 15 Jul 2022 13:50:23 +0000 (UTC) To: libcamera-devel@lists.libcamera.org Date: Fri, 15 Jul 2022 15:50:04 +0200 Message-Id: <20220715135007.53574-5-jacopo@jmondi.org> X-Mailer: git-send-email 2.36.1 In-Reply-To: <20220715135007.53574-1-jacopo@jmondi.org> References: <20220715135007.53574-1-jacopo@jmondi.org> MIME-Version: 1.0 Subject: [libcamera-devel] [PATCH 4/7] libcamera: v4l2_videodevice: Reintroduce toV4L2PixelFormat() 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: , X-Patchwork-Original-From: Jacopo Mondi via libcamera-devel From: Jacopo Mondi Reply-To: Jacopo Mondi Cc: jozef@mlich.cz, Pavel Machek Errors-To: libcamera-devel-bounces@lists.libcamera.org Sender: "libcamera-devel" This is a partial revert of commit 395d43d6d75b ("libcamera: v4l2_videodevice: Drop toV4L2PixelFormat()") The function was removed because it incorrectly maps non-contigous V4L2 format variants (ie V4L2_PIX_FMT_YUV420M) to the API version supported by the video device (singleplanar API and multiplanar API). It was decided at the time to remove the function and let its users call directly V4L2PixelFormat::fromPixelFormat() which accepts a 'multiplanar' flags. As we now aim to associate multiple V4L2PixelFormat to a single libcamera format, it is necessary to verify which of them is actually supported by the video device. Hence re-introduce V4L2VideoDevice::toV4L2PixelFormat() and convert all the V4L2PixelFormat::fromPixelFormat() users to use it. The V4L2 compatibility layer is the only outliner as it doesn't have a video device to poke, hence it still uses V4L2PixelFormat::fromPixelFormat() and defaults to the first format. Next patches will implement the device format matching logic and handle the non-contiguous plane issue in V4L2VideoDevice::toV4L2PixelFormat(). Signed-off-by: Jacopo Mondi --- Documentation/guides/pipeline-handler.rst | 7 ++-- include/libcamera/internal/v4l2_videodevice.h | 2 ++ src/libcamera/pipeline/ipu3/cio2.cpp | 2 +- src/libcamera/pipeline/ipu3/imgu.cpp | 2 +- .../pipeline/raspberrypi/raspberrypi.cpp | 34 +++++++++++-------- src/libcamera/pipeline/rkisp1/rkisp1_path.cpp | 6 ++-- src/libcamera/pipeline/simple/converter.cpp | 8 ++--- src/libcamera/pipeline/simple/simple.cpp | 2 +- src/libcamera/pipeline/uvcvideo/uvcvideo.cpp | 4 +-- src/libcamera/pipeline/vimc/vimc.cpp | 8 ++--- src/libcamera/v4l2_videodevice.cpp | 17 ++++++++++ test/libtest/buffer_source.cpp | 2 +- 12 files changed, 60 insertions(+), 34 deletions(-) diff --git a/Documentation/guides/pipeline-handler.rst b/Documentation/guides/pipeline-handler.rst index 2d55666d094f..dcb6971e46f0 100644 --- a/Documentation/guides/pipeline-handler.rst +++ b/Documentation/guides/pipeline-handler.rst @@ -971,7 +971,8 @@ with the fourcc and size attributes to apply directly to the capture device node. The fourcc attribute is a `V4L2PixelFormat`_ and differs from the ``libcamera::PixelFormat``. Converting the format requires knowledge of the plane configuration for multiplanar formats, so you must explicitly convert it -using the helper ``V4L2PixelFormat::fromPixelFormat()``. +using the helper ``V4L2VideoDevice::toV4L2PixelFormat()`` provided by the +V4L2VideoDevice instance of which the format will be applied on. .. _V4L2DeviceFormat: https://libcamera.org/api-html/classlibcamera_1_1V4L2DeviceFormat.html .. _V4L2PixelFormat: https://libcamera.org/api-html/classlibcamera_1_1V4L2PixelFormat.html @@ -981,7 +982,7 @@ Add the following code beneath the code from above: .. code-block:: cpp V4L2DeviceFormat format = {}; - format.fourcc = V4L2PixelFormat::fromPixelFormat(cfg.pixelFormat); + format.fourcc = data->video_->toV4L2PixelFormat(cfg.pixelFormat); format.size = cfg.size; Set the video device format defined above using the @@ -1001,7 +1002,7 @@ Continue the implementation with the following code: return ret; if (format.size != cfg.size || - format.fourcc != V4L2PixelFormat::fromPixelFormat(cfg.pixelFormat)) + format.fourcc != data->video_->toV4L2PixelFormat(cfg.pixelFormat)) return -EINVAL; Finally, store and set stream-specific data reflecting the state of the stream. diff --git a/include/libcamera/internal/v4l2_videodevice.h b/include/libcamera/internal/v4l2_videodevice.h index 8525acbc558d..29fa0bbaf670 100644 --- a/include/libcamera/internal/v4l2_videodevice.h +++ b/include/libcamera/internal/v4l2_videodevice.h @@ -228,6 +228,8 @@ public: static std::unique_ptr fromEntityName(const MediaDevice *media, const std::string &entity); + V4L2PixelFormat toV4L2PixelFormat(const PixelFormat &pixelFormat) const; + protected: std::string logPrefix() const override; diff --git a/src/libcamera/pipeline/ipu3/cio2.cpp b/src/libcamera/pipeline/ipu3/cio2.cpp index 4a13d16973e9..d4e523af24b4 100644 --- a/src/libcamera/pipeline/ipu3/cio2.cpp +++ b/src/libcamera/pipeline/ipu3/cio2.cpp @@ -203,7 +203,7 @@ int CIO2Device::configure(const Size &size, V4L2DeviceFormat *outputFormat) if (itInfo == mbusCodesToPixelFormat.end()) return -EINVAL; - outputFormat->fourcc = V4L2PixelFormat::fromPixelFormat(itInfo->second)[0]; + outputFormat->fourcc = output_->toV4L2PixelFormat(itInfo->second); outputFormat->size = sensorFormat.size; outputFormat->planesCount = 1; diff --git a/src/libcamera/pipeline/ipu3/imgu.cpp b/src/libcamera/pipeline/ipu3/imgu.cpp index 251164001ffd..531879f18183 100644 --- a/src/libcamera/pipeline/ipu3/imgu.cpp +++ b/src/libcamera/pipeline/ipu3/imgu.cpp @@ -558,7 +558,7 @@ int ImgUDevice::configureVideoDevice(V4L2VideoDevice *dev, unsigned int pad, return 0; *outputFormat = {}; - outputFormat->fourcc = V4L2PixelFormat::fromPixelFormat(formats::NV12)[0]; + outputFormat->fourcc = dev->toV4L2PixelFormat(formats::NV12); outputFormat->size = cfg.size; outputFormat->planesCount = 2; diff --git a/src/libcamera/pipeline/raspberrypi/raspberrypi.cpp b/src/libcamera/pipeline/raspberrypi/raspberrypi.cpp index f698d3329429..52e71d0ad0bd 100644 --- a/src/libcamera/pipeline/raspberrypi/raspberrypi.cpp +++ b/src/libcamera/pipeline/raspberrypi/raspberrypi.cpp @@ -90,13 +90,14 @@ PixelFormat mbusCodeToPixelFormat(unsigned int mbus_code, return pix; } -V4L2DeviceFormat toV4L2DeviceFormat(const V4L2SubdeviceFormat &format, +V4L2DeviceFormat toV4L2DeviceFormat(const V4L2VideoDevice *dev, + const V4L2SubdeviceFormat &format, BayerFormat::Packing packingReq) { const PixelFormat pix = mbusCodeToPixelFormat(format.mbus_code, packingReq); V4L2DeviceFormat deviceFormat; - deviceFormat.fourcc = V4L2PixelFormat::fromPixelFormat(pix)[0]; + deviceFormat.fourcc = dev->toV4L2PixelFormat(pix); deviceFormat.size = format.size; deviceFormat.colorSpace = format.colorSpace; return deviceFormat; @@ -422,15 +423,15 @@ CameraConfiguration::Status RPiCameraConfiguration::validate() * Calculate the best sensor mode we can use based on * the user request. */ + V4L2VideoDevice *unicam = data_->unicam_[Unicam::Image].dev(); const PixelFormatInfo &info = PixelFormatInfo::info(cfg.pixelFormat); unsigned int bitDepth = info.isValid() ? info.bitsPerPixel : defaultRawBitDepth; V4L2SubdeviceFormat sensorFormat = findBestFormat(data_->sensorFormats_, cfg.size, bitDepth); BayerFormat::Packing packing = BayerFormat::Packing::CSI2; if (info.isValid() && !info.packed) packing = BayerFormat::Packing::None; - V4L2DeviceFormat unicamFormat = toV4L2DeviceFormat(sensorFormat, - packing); - int ret = data_->unicam_[Unicam::Image].dev()->tryFormat(&unicamFormat); + V4L2DeviceFormat unicamFormat = toV4L2DeviceFormat(unicam, sensorFormat, packing); + int ret = unicam->tryFormat(&unicamFormat); if (ret) return Invalid; @@ -516,14 +517,14 @@ CameraConfiguration::Status RPiCameraConfiguration::validate() V4L2VideoDevice::Formats fmts = dev->formats(); - if (fmts.find(V4L2PixelFormat::fromPixelFormat(cfgPixFmt)[0]) == fmts.end()) { + if (fmts.find(dev->toV4L2PixelFormat(cfgPixFmt)) == fmts.end()) { /* If we cannot find a native format, use a default one. */ cfgPixFmt = formats::NV12; status = Adjusted; } V4L2DeviceFormat format; - format.fourcc = V4L2PixelFormat::fromPixelFormat(cfg.pixelFormat)[0]; + format.fourcc = dev->toV4L2PixelFormat(cfg.pixelFormat); format.size = cfg.size; format.colorSpace = cfg.colorSpace; @@ -751,8 +752,9 @@ int PipelineHandlerRPi::configure(Camera *camera, CameraConfiguration *config) if (ret) return ret; - V4L2DeviceFormat unicamFormat = toV4L2DeviceFormat(sensorFormat, packing); - ret = data->unicam_[Unicam::Image].dev()->setFormat(&unicamFormat); + V4L2VideoDevice *unicam = data->unicam_[Unicam::Image].dev(); + V4L2DeviceFormat unicamFormat = toV4L2DeviceFormat(unicam, sensorFormat, packing); + ret = unicam->setFormat(&unicamFormat); if (ret) return ret; @@ -783,7 +785,7 @@ int PipelineHandlerRPi::configure(Camera *camera, CameraConfiguration *config) RPi::Stream *stream = i == maxIndex ? &data->isp_[Isp::Output0] : &data->isp_[Isp::Output1]; - V4L2PixelFormat fourcc = V4L2PixelFormat::fromPixelFormat(cfg.pixelFormat)[0]; + V4L2PixelFormat fourcc = stream->dev()->toV4L2PixelFormat(cfg.pixelFormat); format.size = cfg.size; format.fourcc = fourcc; format.colorSpace = cfg.colorSpace; @@ -826,13 +828,15 @@ int PipelineHandlerRPi::configure(Camera *camera, CameraConfiguration *config) * statistics coming from the hardware. */ if (!output0Set) { + V4L2VideoDevice *dev = data->isp_[Isp::Output0].dev(); + maxSize = Size(320, 240); format = {}; format.size = maxSize; - format.fourcc = V4L2PixelFormat::fromPixelFormat(formats::YUV420)[0]; + format.fourcc = dev->toV4L2PixelFormat(formats::YUV420); /* No one asked for output, so the color space doesn't matter. */ format.colorSpace = ColorSpace::Jpeg; - ret = data->isp_[Isp::Output0].dev()->setFormat(&format); + ret = dev->setFormat(&format); if (ret) { LOG(RPI, Error) << "Failed to set default format on ISP Output0: " @@ -856,18 +860,20 @@ int PipelineHandlerRPi::configure(Camera *camera, CameraConfiguration *config) * colour denoise will not run. */ if (!output1Set) { + V4L2VideoDevice *dev = data->isp_[Isp::Output1].dev(); + V4L2DeviceFormat output1Format; constexpr Size maxDimensions(1200, 1200); const Size limit = maxDimensions.boundedToAspectRatio(format.size); output1Format.size = (format.size / 2).boundedTo(limit).alignedDownTo(2, 2); output1Format.colorSpace = format.colorSpace; - output1Format.fourcc = V4L2PixelFormat::fromPixelFormat(formats::YUV420)[0]; + output1Format.fourcc = dev->toV4L2PixelFormat(formats::YUV420); LOG(RPI, Debug) << "Setting ISP Output1 (internal) to " << output1Format; - ret = data->isp_[Isp::Output1].dev()->setFormat(&output1Format); + ret = dev->setFormat(&output1Format); if (ret) { LOG(RPI, Error) << "Failed to set format on ISP Output1: " << ret; diff --git a/src/libcamera/pipeline/rkisp1/rkisp1_path.cpp b/src/libcamera/pipeline/rkisp1/rkisp1_path.cpp index f4e71bab00ed..2d38f0fb37ab 100644 --- a/src/libcamera/pipeline/rkisp1/rkisp1_path.cpp +++ b/src/libcamera/pipeline/rkisp1/rkisp1_path.cpp @@ -81,7 +81,7 @@ CameraConfiguration::Status RkISP1Path::validate(StreamConfiguration *cfg) cfg->bufferCount = RKISP1_BUFFER_COUNT; V4L2DeviceFormat format; - format.fourcc = V4L2PixelFormat::fromPixelFormat(cfg->pixelFormat)[0]; + format.fourcc = video_->toV4L2PixelFormat(cfg->pixelFormat); format.size = cfg->size; int ret = video_->tryFormat(&format); @@ -147,7 +147,7 @@ int RkISP1Path::configure(const StreamConfiguration &config, const PixelFormatInfo &info = PixelFormatInfo::info(config.pixelFormat); V4L2DeviceFormat outputFormat; - outputFormat.fourcc = V4L2PixelFormat::fromPixelFormat(config.pixelFormat)[0]; + outputFormat.fourcc = video_->toV4L2PixelFormat(config.pixelFormat); outputFormat.size = config.size; outputFormat.planesCount = info.numPlanes(); @@ -156,7 +156,7 @@ int RkISP1Path::configure(const StreamConfiguration &config, return ret; if (outputFormat.size != config.size || - outputFormat.fourcc != V4L2PixelFormat::fromPixelFormat(config.pixelFormat)[0]) { + outputFormat.fourcc != video_->toV4L2PixelFormat(config.pixelFormat)) { LOG(RkISP1, Error) << "Unable to configure capture in " << config.toString(); return -EINVAL; diff --git a/src/libcamera/pipeline/simple/converter.cpp b/src/libcamera/pipeline/simple/converter.cpp index 490ee5eb4ec4..11d9f572a0de 100644 --- a/src/libcamera/pipeline/simple/converter.cpp +++ b/src/libcamera/pipeline/simple/converter.cpp @@ -46,7 +46,7 @@ int SimpleConverter::Stream::configure(const StreamConfiguration &inputCfg, const StreamConfiguration &outputCfg) { V4L2PixelFormat videoFormat = - V4L2PixelFormat::fromPixelFormat(inputCfg.pixelFormat)[0]; + m2m_->output()->toV4L2PixelFormat(inputCfg.pixelFormat); V4L2DeviceFormat format; format.fourcc = videoFormat; @@ -71,7 +71,7 @@ int SimpleConverter::Stream::configure(const StreamConfiguration &inputCfg, } /* Set the pixel format and size on the output. */ - videoFormat = V4L2PixelFormat::fromPixelFormat(outputCfg.pixelFormat)[0]; + videoFormat = m2m_->capture()->toV4L2PixelFormat(outputCfg.pixelFormat); format = {}; format.fourcc = videoFormat; format.size = outputCfg.size; @@ -210,7 +210,7 @@ std::vector SimpleConverter::formats(PixelFormat input) * enumerate the conversion capabilities on its output (V4L2 capture). */ V4L2DeviceFormat v4l2Format; - v4l2Format.fourcc = V4L2PixelFormat::fromPixelFormat(input)[0]; + v4l2Format.fourcc = m2m_->output()->toV4L2PixelFormat(input); v4l2Format.size = { 1, 1 }; int ret = m2m_->output()->setFormat(&v4l2Format); @@ -281,7 +281,7 @@ SimpleConverter::strideAndFrameSize(const PixelFormat &pixelFormat, const Size &size) { V4L2DeviceFormat format; - format.fourcc = V4L2PixelFormat::fromPixelFormat(pixelFormat)[0]; + format.fourcc = m2m_->capture()->toV4L2PixelFormat(pixelFormat); format.size = size; int ret = m2m_->capture()->tryFormat(&format); diff --git a/src/libcamera/pipeline/simple/simple.cpp b/src/libcamera/pipeline/simple/simple.cpp index 33a7b4e57deb..65a483c14379 100644 --- a/src/libcamera/pipeline/simple/simple.cpp +++ b/src/libcamera/pipeline/simple/simple.cpp @@ -918,7 +918,7 @@ CameraConfiguration::Status SimpleCameraConfiguration::validate() return Invalid; } else { V4L2DeviceFormat format; - format.fourcc = V4L2PixelFormat::fromPixelFormat(cfg.pixelFormat)[0]; + format.fourcc = data_->video_->toV4L2PixelFormat(cfg.pixelFormat); format.size = cfg.size; int ret = data_->video_->tryFormat(&format); diff --git a/src/libcamera/pipeline/uvcvideo/uvcvideo.cpp b/src/libcamera/pipeline/uvcvideo/uvcvideo.cpp index 338aff02aff0..cf870d26e3c3 100644 --- a/src/libcamera/pipeline/uvcvideo/uvcvideo.cpp +++ b/src/libcamera/pipeline/uvcvideo/uvcvideo.cpp @@ -149,7 +149,7 @@ CameraConfiguration::Status UVCCameraConfiguration::validate() cfg.bufferCount = 4; V4L2DeviceFormat format; - format.fourcc = V4L2PixelFormat::fromPixelFormat(cfg.pixelFormat)[0]; + format.fourcc = data_->video_->toV4L2PixelFormat(cfg.pixelFormat); format.size = cfg.size; int ret = data_->video_->tryFormat(&format); @@ -205,7 +205,7 @@ int PipelineHandlerUVC::configure(Camera *camera, CameraConfiguration *config) int ret; V4L2DeviceFormat format; - format.fourcc = V4L2PixelFormat::fromPixelFormat(cfg.pixelFormat)[0]; + format.fourcc = data->video_->toV4L2PixelFormat(cfg.pixelFormat); format.size = cfg.size; ret = data->video_->setFormat(&format); diff --git a/src/libcamera/pipeline/vimc/vimc.cpp b/src/libcamera/pipeline/vimc/vimc.cpp index b88b30fff108..153cf849bb18 100644 --- a/src/libcamera/pipeline/vimc/vimc.cpp +++ b/src/libcamera/pipeline/vimc/vimc.cpp @@ -171,7 +171,7 @@ CameraConfiguration::Status VimcCameraConfiguration::validate() cfg.bufferCount = 4; V4L2DeviceFormat format; - format.fourcc = V4L2PixelFormat::fromPixelFormat(cfg.pixelFormat)[0]; + format.fourcc = data_->video_->toV4L2PixelFormat(cfg.pixelFormat); format.size = cfg.size; int ret = data_->video_->tryFormat(&format); @@ -275,7 +275,7 @@ int PipelineHandlerVimc::configure(Camera *camera, CameraConfiguration *config) return ret; V4L2DeviceFormat format; - format.fourcc = V4L2PixelFormat::fromPixelFormat(cfg.pixelFormat)[0]; + format.fourcc = data->video_->toV4L2PixelFormat(cfg.pixelFormat); format.size = cfg.size; ret = data->video_->setFormat(&format); @@ -283,7 +283,7 @@ int PipelineHandlerVimc::configure(Camera *camera, CameraConfiguration *config) return ret; if (format.size != cfg.size || - format.fourcc != V4L2PixelFormat::fromPixelFormat(cfg.pixelFormat)[0]) + format.fourcc != data->video_->toV4L2PixelFormat(cfg.pixelFormat)) return -EINVAL; /* @@ -598,7 +598,7 @@ int VimcCameraData::allocateMockIPABuffers() constexpr unsigned int kBufCount = 2; V4L2DeviceFormat format; - format.fourcc = V4L2PixelFormat::fromPixelFormat(formats::BGR888)[0]; + format.fourcc = video_->toV4L2PixelFormat(formats::BGR888); format.size = Size (160, 120); int ret = video_->setFormat(&format); diff --git a/src/libcamera/v4l2_videodevice.cpp b/src/libcamera/v4l2_videodevice.cpp index 63911339f96e..43c3d0f69266 100644 --- a/src/libcamera/v4l2_videodevice.cpp +++ b/src/libcamera/v4l2_videodevice.cpp @@ -1989,6 +1989,23 @@ V4L2VideoDevice::fromEntityName(const MediaDevice *media, return std::make_unique(mediaEntity); } +/** + * \brief Convert \a PixelFormat to its corresponding V4L2 FourCC + * \param[in] pixelFormat The PixelFormat to convert + * + * For multiplanar formats, the V4L2 format variant (contiguous or + * non-contiguous planes) is selected automatically based on the capabilities + * of the video device. If the video device supports the V4L2 multiplanar API, + * non-contiguous formats are preferred. + * + * \return The V4L2_PIX_FMT_* pixel format code corresponding to \a pixelFormat + */ +V4L2PixelFormat V4L2VideoDevice::toV4L2PixelFormat(const PixelFormat &pixelFormat) const +{ + return V4L2PixelFormat::fromPixelFormat(pixelFormat, + caps_.isMultiplanar())[0]; +} + /** * \class V4L2M2MDevice * \brief Memory-to-Memory video device diff --git a/test/libtest/buffer_source.cpp b/test/libtest/buffer_source.cpp index 84f1169c9f5f..dde11f365e43 100644 --- a/test/libtest/buffer_source.cpp +++ b/test/libtest/buffer_source.cpp @@ -72,7 +72,7 @@ int BufferSource::allocate(const StreamConfiguration &config) } format.size = config.size; - format.fourcc = V4L2PixelFormat::fromPixelFormat(config.pixelFormat)[0]; + format.fourcc = video->toV4L2PixelFormat(config.pixelFormat); if (video->setFormat(&format)) { std::cout << "Failed to set format on output device" << std::endl; return TestFail;