[{"id":1129,"web_url":"https://patchwork.libcamera.org/comment/1129/","msgid":"<1734e2a8-d742-de33-9c5d-afc9534e9f6b@ideasonboard.com>","date":"2019-03-26T09:14:26","subject":"Re: [libcamera-devel] [PATCH 0/2] Qt-based libcamera viewer","submitter":{"id":4,"url":"https://patchwork.libcamera.org/api/people/4/","name":"Kieran Bingham","email":"kieran.bingham@ideasonboard.com"},"content":"Hi Laurent,\n\nThank you for this series.\n\nI have been able to test it using an externally attached UVC camera,\nthough unfortunately I could not use it with my internal UVC webcam as\nit only seems to support providing MJPEG content.\n\nWe can extend support for different image formats in this later I think\n- and I'd rather see a starting point committed as a base to allow this\nto be improved upon.\n\nSo, not so much of a code review, but more of an:\n\nAcked-by: Kieran Bingham \n\n(And I guess also a Tested-by: Kieran Bingham\n too :D)\n\n--\nRegards\n\nKieran\n\n\nOn 23/03/2019 07:31, Laurent Pinchart wrote:\n> Hello,\n> \n> As part of a recent demo, I faced a need to display the frames generated\n> by libcamera on the screen. Starting with Niklas' experiments with Qt\n> and libcamera, I've created the qcam application.\n> \n> The result is quite simple, supports a single stream, and has very\n> limited features (the only feature is camera selection, everything else,\n> including format selection, user-controlled camera start/stop, is not\n> implemented yet). Still, I believe it can be useful, and may even be\n> clean enough to merge it in the libcamera tree.\n> \n> One item worth noting is the integration of the Qt event loop in the\n> libcamera event dispatcher infrastructure. This component could possibly\n> be moved to a libcamera-utils library, as it it could be useful to\n> libcamera users.\n> \n> Laurent Pinchart (2):\n> cam: Separate options valid() and empty()\n> qcam: Add Qt-based GUI application\n> \n> src/cam/main.cpp | 7 +-\n> src/cam/options.cpp | 34 +++--\n> src/cam/options.h | 5 +-\n> src/meson.build | 1 +\n> src/qcam/format_converter.cpp | 99 ++++++++++++++\n> src/qcam/format_converter.h | 14 ++\n> src/qcam/main.cpp | 75 +++++++++++\n> src/qcam/main_window.cpp | 223 +++++++++++++++++++++++++++++++\n> src/qcam/main_window.h | 54 ++++++++\n> src/qcam/meson.build | 19 +++\n> src/qcam/qt_event_dispatcher.cpp | 145 ++++++++++++++++++++\n> src/qcam/qt_event_dispatcher.h | 62 +++++++++\n> src/qcam/viewfinder.cpp | 38 ++++++\n> src/qcam/viewfinder.h | 31 +++++\n> 14 files changed, 785 insertions(+), 22 deletions(-)\n> create mode 100644 src/qcam/format_converter.cpp\n> create mode 100644 src/qcam/format_converter.h\n> create mode 100644 src/qcam/main.cpp\n> create mode 100644 src/qcam/main_window.cpp\n> create mode 100644 src/qcam/main_window.h\n> create mode 100644 src/qcam/meson.build\n> create mode 100644 src/qcam/qt_event_dispatcher.cpp\n> create mode 100644 src/qcam/qt_event_dispatcher.h\n> create mode 100644 src/qcam/viewfinder.cpp\n> create mode 100644 src/qcam/viewfinder.h\n>","headers":{"Return-Path":"","Received":["from perceval.ideasonboard.com (perceval.ideasonboard.com\n\t[IPv6:2001:4b98:dc2:55:216:3eff:fef7:d647])\n\tby lancelot.ideasonboard.com (Postfix) with ESMTPS id C1A37610D5\n\tfor ;\n\tTue, 26 Mar 2019 10:14:29 +0100 (CET)","from [192.168.0.20]\n\t(cpc89242-aztw30-2-0-cust488.18-1.cable.virginm.net [86.31.129.233])\n\tby perceval.ideasonboard.com (Postfix) with ESMTPSA id EA9DB2E1;\n\tTue, 26 Mar 2019 10:14:28 +0100 (CET)"],"DKIM-Signature":"v=1; a=rsa-sha256; c=relaxed/simple; d=ideasonboard.com;\n\ts=mail; t=1553591669;\n\tbh=fTpi0sYsJw9Bw95tKMbreFQOrN/IVNczSjOHQTlCRAw=;\n\th=Reply-To:Subject:To:References:From:Date:In-Reply-To:From;\n\tb=bnQJNorI1yq2ibWhBKNvozHx2hykCq2h7KkNwFWLN8mno3S2wm8bNQsnBkV53QCnL\n\tZBRkZI30uN1dipxpJxyg00lS04PIuLfWzgpUlM8dYBIkQYCEkferoSkZkgLfXq6+JW\n\tcVc1Zxmz5gZS1GvSpWpb2pKD4vfLeiYSoFhftW/E=","Reply-To":"kieran.bingham@ideasonboard.com","To":"Laurent Pinchart ,\n\tlibcamera-devel@lists.libcamera.org","References":"<20190323073125.25497-1-laurent.pinchart@ideasonboard.com>","From":"Kieran Bingham ","Openpgp":"preference=signencrypt","Autocrypt":"addr=kieran.bingham@ideasonboard.com; keydata=\n\tmQINBFYE/WYBEACs1PwjMD9rgCu1hlIiUA1AXR4rv2v+BCLUq//vrX5S5bjzxKAryRf0uHat\n\tV/zwz6hiDrZuHUACDB7X8OaQcwhLaVlq6byfoBr25+hbZG7G3+5EUl9cQ7dQEdvNj6V6y/SC\n\trRanWfelwQThCHckbobWiQJfK9n7rYNcPMq9B8e9F020LFH7Kj6YmO95ewJGgLm+idg1Kb3C\n\tpotzWkXc1xmPzcQ1fvQMOfMwdS+4SNw4rY9f07Xb2K99rjMwZVDgESKIzhsDB5GY465sCsiQ\n\tcSAZRxqE49RTBq2+EQsbrQpIc8XiffAB8qexh5/QPzCmR4kJgCGeHIXBtgRj+nIkCJPZvZtf\n\tKr2EAbc6tgg6DkAEHJb+1okosV09+0+TXywYvtEop/WUOWQ+zo+Y/OBd+8Ptgt1pDRyOBzL8\n\tRXa8ZqRf0Mwg75D+dKntZeJHzPRJyrlfQokngAAs4PaFt6UfS+ypMAF37T6CeDArQC41V3ko\n\tlPn1yMsVD0p+6i3DPvA/GPIksDC4owjnzVX9kM8Zc5Cx+XoAN0w5Eqo4t6qEVbuettxx55gq\n\t8K8FieAjgjMSxngo/HST8TpFeqI5nVeq0/lqtBRQKumuIqDg+Bkr4L1V/PSB6XgQcOdhtd36\n\tOe9X9dXB8YSNt7VjOcO7BTmFn/Z8r92mSAfHXpb07YJWJosQOQARAQABtDBLaWVyYW4gQmlu\n\tZ2hhbSA8a2llcmFuLmJpbmdoYW1AaWRlYXNvbmJvYXJkLmNvbT6JAkAEEwEKACoCGwMFCwkI\n\tBwIGFQgJCgsCBBYCAwECHgECF4ACGQEFAlnDk/gFCQeA/YsACgkQoR5GchCkYf3X5w/9EaZ7\n\tcnUcT6dxjxrcmmMnfFPoQA1iQXr/MXQJBjFWfxRUWYzjvUJb2D/FpA8FY7y+vksoJP7pWDL7\n\tQTbksdwzagUEk7CU45iLWL/CZ/knYhj1I/+5LSLFmvZ/5Gf5xn2ZCsmg7C0MdW/GbJ8IjWA8\n\t/LKJSEYH8tefoiG6+9xSNp1p0Gesu3vhje/GdGX4wDsfAxx1rIYDYVoX4bDM+uBUQh7sQox/\n\tR1bS0AaVJzPNcjeC14MS226mQRUaUPc9250aj44WmDfcg44/kMsoLFEmQo2II9aOlxUDJ+x1\n\txohGbh9mgBoVawMO3RMBihcEjo/8ytW6v7xSF+xP4Oc+HOn7qebAkxhSWcRxQVaQYw3S9iZz\n\t2iA09AXAkbvPKuMSXi4uau5daXStfBnmOfalG0j+9Y6hOFjz5j0XzaoF6Pln0jisDtWltYhP\n\tX9LjFVhhLkTzPZB/xOeWGmsG4gv2V2ExbU3uAmb7t1VSD9+IO3Km4FtnYOKBWlxwEd8qOFpS\n\tjEqMXURKOiJvnw3OXe9MqG19XdeENA1KyhK5rqjpwdvPGfSn2V+SlsdJA0DFsobUScD9qXQw\n\tOvhapHe3XboK2+Rd7L+g/9Ud7ZKLQHAsMBXOVJbufA1AT+IaOt0ugMcFkAR5UbBg5+dZUYJj\n\t1QbPQcGmM3wfvuaWV5+SlJ+WeKIb8ta5Ag0EVgT9ZgEQAM4o5G/kmruIQJ3K9SYzmPishRHV\n\tDcUcvoakyXSX2mIoccmo9BHtD9MxIt+QmxOpYFNFM7YofX4lG0ld8H7FqoNVLd/+a0yru5Cx\n\tadeZBe3qr1eLns10Q90LuMo7/6zJhCW2w+HE7xgmCHejAwuNe3+7yt4QmwlSGUqdxl8cgtS1\n\tPlEK93xXDsgsJj/bw1EfSVdAUqhx8UQ3aVFxNug5OpoX9FdWJLKROUrfNeBE16RLrNrq2ROc\n\tiSFETpVjyC/oZtzRFnwD9Or7EFMi76/xrWzk+/b15RJ9WrpXGMrttHUUcYZEOoiC2lEXMSAF\n\tSSSj4vHbKDJ0vKQdEFtdgB1roqzxdIOg4rlHz5qwOTynueiBpaZI3PHDudZSMR5Fk6QjFooE\n\tXTw3sSl/km/lvUFiv9CYyHOLdygWohvDuMkV/Jpdkfq8XwFSjOle+vT/4VqERnYFDIGBxaRx\n\tkoBLfNDiiuR3lD8tnJ4A1F88K6ojOUs+jndKsOaQpDZV6iNFv8IaNIklTPvPkZsmNDhJMRHH\n\tIu60S7BpzNeQeT4yyY4dX9lC2JL/LOEpw8DGf5BNOP1KgjCvyp1/KcFxDAo89IeqljaRsCdP\n\t7WCIECWYem6pLwaw6IAL7oX+tEqIMPph/G/jwZcdS6Hkyt/esHPuHNwX4guqTbVEuRqbDzDI\n\t2DJO5FbxABEBAAGJAiUEGAEKAA8CGwwFAlnDlGsFCQeA/gIACgkQoR5GchCkYf1yYRAAq+Yo\n\tnbf9DGdK1kTAm2RTFg+w9oOp2Xjqfhds2PAhFFvrHQg1XfQR/UF/SjeUmaOmLSczM0s6XMeO\n\tVcE77UFtJ/+hLo4PRFKm5X1Pcar6g5m4xGqa+Xfzi9tRkwC29KMCoQOag1BhHChgqYaUH3yo\n\tUzaPwT/fY75iVI+yD0ih/e6j8qYvP8pvGwMQfrmN9YB0zB39YzCSdaUaNrWGD3iCBxg6lwSO\n\tLKeRhxxfiXCIYEf3vwOsP3YMx2JkD5doseXmWBGW1U0T/oJF+DVfKB6mv5UfsTzpVhJRgee7\n\t4jkjqFq4qsUGxcvF2xtRkfHFpZDbRgRlVmiWkqDkT4qMA+4q1y/dWwshSKi/uwVZNycuLsz+\n\t+OD8xPNCsMTqeUkAKfbD8xW4LCay3r/dD2ckoxRxtMD9eOAyu5wYzo/ydIPTh1QEj9SYyvp8\n\tO0g6CpxEwyHUQtF5oh15O018z3ZLztFJKR3RD42VKVsrnNDKnoY0f4U0z7eJv2NeF8xHMuiU\n\tRCIzqxX1GVYaNkKTnb/Qja8hnYnkUzY1Lc+OtwiGmXTwYsPZjjAaDX35J/RSKAoy5wGo/YFA\n\tJxB1gWThL4kOTbsqqXj9GLcyOImkW0lJGGR3o/fV91Zh63S5TKnf2YGGGzxki+ADdxVQAm+Q\n\tsbsRB8KNNvVXBOVNwko86rQqF9drZuw=","Organization":"Ideas on Board","Message-ID":"<1734e2a8-d742-de33-9c5d-afc9534e9f6b@ideasonboard.com>","Date":"Tue, 26 Mar 2019 09:14:26 +0000","User-Agent":"Mozilla/5.0 (X11; Linux x86_64; rv:60.0) Gecko/20100101\n\tThunderbird/60.5.1","MIME-Version":"1.0","In-Reply-To":"<20190323073125.25497-1-laurent.pinchart@ideasonboard.com>","Content-Type":"text/plain; charset=utf-8","Content-Language":"en-GB","Content-Transfer-Encoding":"7bit","Subject":"Re: [libcamera-devel] [PATCH 0/2] Qt-based libcamera viewer","X-BeenThere":"libcamera-devel@lists.libcamera.org","X-Mailman-Version":"2.1.23","Precedence":"list","List-Id":"","List-Unsubscribe":",\n\t","List-Archive":"","List-Post":"","List-Help":"","List-Subscribe":",\n\t","X-List-Received-Date":"Tue, 26 Mar 2019 09:14:30 -0000"}}]