From patchwork Fri Mar 20 01:48:33 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Laurent Pinchart X-Patchwork-Id: 3213 Return-Path: Received: from perceval.ideasonboard.com (perceval.ideasonboard.com [IPv6:2001:4b98:dc2:55:216:3eff:fef7:d647]) by lancelot.ideasonboard.com (Postfix) with ESMTPS id 3F16862B7E for ; Fri, 20 Mar 2020 02:48:54 +0100 (CET) Received: from pendragon.bb.dnainternet.fi (81-175-216-236.bb.dnainternet.fi [81.175.216.236]) by perceval.ideasonboard.com (Postfix) with ESMTPSA id 8AC7014EC; Fri, 20 Mar 2020 02:48:53 +0100 (CET) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=ideasonboard.com; s=mail; t=1584668933; bh=PCjLBuxhzldYsVxjC0yVZYh/XNqCrJvpF9uOV7KHUFU=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=hJtvRKIHrbBC09nuYzRpSuacG78ziIzAHnFYlsYLQ5gpRdgnzJ/x+38tZnf9R0dDF uqINtiqOSP1MXcs1yYIsEy6uijpruk4tlvIzwHD+4tu0J/bhhv5m/hlb/PVVxVTHWz 13IqV8vedUoZLrF4sd3qoVuiWlBPsnSSZ9JTT2YQ= From: Laurent Pinchart To: libcamera-devel@lists.libcamera.org Cc: Martijn Braam , Benjamin GAIGNARD , Andrey Konovalov Date: Fri, 20 Mar 2020 03:48:33 +0200 Message-Id: <20200320014839.14683-6-laurent.pinchart@ideasonboard.com> X-Mailer: git-send-email 2.24.1 In-Reply-To: <20200320014839.14683-1-laurent.pinchart@ideasonboard.com> References: <20200320014839.14683-1-laurent.pinchart@ideasonboard.com> MIME-Version: 1.0 Subject: [libcamera-devel] [PATCH v3 05/11] libcamera: v4l2_videodevice: Support filtering formats by media bus code 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-List-Received-Date: Fri, 20 Mar 2020 01:48:54 -0000 Add support for the recent V4L2 extension to VIDIOC_ENUM_FMT that allows filtering pixel formats by media bus codes. Signed-off-by: Laurent Pinchart --- src/libcamera/include/v4l2_videodevice.h | 4 ++-- src/libcamera/v4l2_videodevice.cpp | 16 +++++++++++++--- 2 files changed, 15 insertions(+), 5 deletions(-) diff --git a/src/libcamera/include/v4l2_videodevice.h b/src/libcamera/include/v4l2_videodevice.h index 7d7c4a9e6ebd..7b011d3b4e87 100644 --- a/src/libcamera/include/v4l2_videodevice.h +++ b/src/libcamera/include/v4l2_videodevice.h @@ -207,7 +207,7 @@ public: int getFormat(V4L2DeviceFormat *format); int setFormat(V4L2DeviceFormat *format); - std::map> formats(); + std::map> formats(uint32_t code = 0); int setCrop(Rectangle *rect); int setCompose(Rectangle *rect); @@ -246,7 +246,7 @@ private: int getFormatSingleplane(V4L2DeviceFormat *format); int setFormatSingleplane(V4L2DeviceFormat *format); - std::vector enumPixelformats(); + std::vector enumPixelformats(uint32_t code); std::vector enumSizes(V4L2PixelFormat pixelFormat); int setSelection(unsigned int target, Rectangle *rect); diff --git a/src/libcamera/v4l2_videodevice.cpp b/src/libcamera/v4l2_videodevice.cpp index b20c8c77260f..c11936fa2d5a 100644 --- a/src/libcamera/v4l2_videodevice.cpp +++ b/src/libcamera/v4l2_videodevice.cpp @@ -959,16 +959,19 @@ int V4L2VideoDevice::setFormatSingleplane(V4L2DeviceFormat *format) /** * \brief Enumerate all pixel formats and frame sizes + * \param[in] code Restrict formats to this media bus code. * * Enumerate all pixel formats and frame sizes supported by the video device. + * If the \a code argument is not zero, only formats compatible with that media + * bus code will be enumerated. * * \return A list of the supported video device formats */ -std::map> V4L2VideoDevice::formats() +std::map> V4L2VideoDevice::formats(uint32_t code) { std::map> formats; - for (V4L2PixelFormat pixelFormat : enumPixelformats()) { + for (V4L2PixelFormat pixelFormat : enumPixelformats(code)) { std::vector sizes = enumSizes(pixelFormat); if (sizes.empty()) return {}; @@ -986,15 +989,22 @@ std::map> V4L2VideoDevice::formats() return formats; } -std::vector V4L2VideoDevice::enumPixelformats() +std::vector V4L2VideoDevice::enumPixelformats(uint32_t code) { std::vector formats; int ret; + if (code && !(caps_.device_caps() & V4L2_CAP_IO_MC)) { + LOG(V4L2, Error) + << "Media bus code filtering not supported by the device"; + return {}; + } + for (unsigned int index = 0; ; index++) { struct v4l2_fmtdesc pixelformatEnum = {}; pixelformatEnum.index = index; pixelformatEnum.type = bufferType_; + pixelformatEnum.mbus_code = code; ret = ioctl(VIDIOC_ENUM_FMT, &pixelformatEnum); if (ret)