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{ "id": 9904, "url": "https://patchwork.libcamera.org/api/covers/9904/?format=api", "web_url": "https://patchwork.libcamera.org/cover/9904/", "project": { "id": 1, "url": "https://patchwork.libcamera.org/api/projects/1/?format=api", "name": "libcamera", "link_name": "libcamera", "list_id": "libcamera_core", "list_email": "libcamera-devel@lists.libcamera.org", "web_url": "", "scm_url": "", "webscm_url": "" }, "msgid": "<20201002103416.53623-1-email@uajain.com>", "date": "2020-10-02T10:34:13", "name": "[libcamera-devel,v1,0/3] Basic NV12 image thumbnailer", "submitter": { "id": 1, "url": "https://patchwork.libcamera.org/api/people/1/?format=api", "name": "Umang Jain", "email": "email@uajain.com" }, "mbox": "https://patchwork.libcamera.org/cover/9904/mbox/", "series": [ { "id": 1346, "url": "https://patchwork.libcamera.org/api/series/1346/?format=api", "web_url": "https://patchwork.libcamera.org/project/libcamera/list/?series=1346", "date": "2020-10-02T10:34:13", "name": "Basic NV12 image thumbnailer", "version": 1, "mbox": "https://patchwork.libcamera.org/series/1346/mbox/" } ], "comments": "https://patchwork.libcamera.org/api/covers/9904/comments/", "headers": { "Return-Path": "<libcamera-devel-bounces@lists.libcamera.org>", "X-Original-To": "parsemail@patchwork.libcamera.org", "Delivered-To": "parsemail@patchwork.libcamera.org", "Received": [ "from lancelot.ideasonboard.com (lancelot.ideasonboard.com\n\t[92.243.16.209])\n\tby patchwork.libcamera.org (Postfix) with ESMTPS id E66AEC3B5C\n\tfor <parsemail@patchwork.libcamera.org>;\n\tFri, 2 Oct 2020 10:34:23 +0000 (UTC)", "from lancelot.ideasonboard.com (localhost [IPv6:::1])\n\tby lancelot.ideasonboard.com (Postfix) with ESMTP id 6C4F9623B6;\n\tFri, 2 Oct 2020 12:34:23 +0200 (CEST)", "from mail.uajain.com (static.126.159.217.95.clients.your-server.de\n\t[95.217.159.126])\n\tby lancelot.ideasonboard.com (Postfix) with ESMTPS id 6123D6035D\n\tfor <libcamera-devel@lists.libcamera.org>;\n\tFri, 2 Oct 2020 12:34:22 +0200 (CEST)" ], "Authentication-Results": "lancelot.ideasonboard.com;\n\tdkim=fail reason=\"signature verification failed\" (2048-bit key;\n\tunprotected) header.d=uajain.com header.i=@uajain.com\n\theader.b=\"qxGYQcly\"; dkim-atps=neutral", "From": "Umang Jain <email@uajain.com>", "DKIM-Signature": "v=1; a=rsa-sha256; c=relaxed/simple; d=uajain.com; s=mail;\n\tt=1601634861; bh=gUaLFqfJRj+M+9OLnXMKkaP0Dxg5rU6q+y9+60dKi7M=;\n\th=From:To:Cc:Subject;\n\tb=qxGYQclyN6zLvNiNHSfrnQGm2A7cKrB8m2hFhyKPiB2TEDvpBLmdP+MqEjAyDjJcz\n\tIFAX2Uui+XKdssjg9T/Og6GJ8cVp7wzLT53Vp9ss18NMcmp8N5MGvmzD5nB0MNDacT\n\t2m2/9O8h5fGPBX4YacM9IlPhuhbNMGhKMIJL335frCbz4nQGMfpBFpd02+XG6OMisT\n\tGO6RTSWDbuHvksBxQ/gHHhgWriXvHqReNlNXsUNVZNIA4j4a9kpGqGbJN4uzuTtMd3\n\tzupt4CVQ7Mh7Ofnx/LcxIKrAI6RwdKB1g5PejdGp4tjBEs7e4tHjD6LypjK3yQ+vCu\n\twQRROs9lxiYtg==", "To": "libcamera-devel@lists.libcamera.org", "Date": "Fri, 2 Oct 2020 16:04:13 +0530", "Message-Id": "<20201002103416.53623-1-email@uajain.com>", "Mime-Version": "1.0", "Subject": "[libcamera-devel] [PATCH v1 0/3] Basic NV12 image thumbnailer", "X-BeenThere": "libcamera-devel@lists.libcamera.org", "X-Mailman-Version": "2.1.29", "Precedence": "list", "List-Id": "<libcamera-devel.lists.libcamera.org>", "List-Unsubscribe": "<https://lists.libcamera.org/options/libcamera-devel>,\n\t<mailto:libcamera-devel-request@lists.libcamera.org?subject=unsubscribe>", "List-Archive": "<https://lists.libcamera.org/pipermail/libcamera-devel/>", "List-Post": "<mailto:libcamera-devel@lists.libcamera.org>", "List-Help": "<mailto:libcamera-devel-request@lists.libcamera.org?subject=help>", "List-Subscribe": "<https://lists.libcamera.org/listinfo/libcamera-devel>,\n\t<mailto:libcamera-devel-request@lists.libcamera.org?subject=subscribe>", "Content-Type": "text/plain; charset=\"us-ascii\"", "Content-Transfer-Encoding": "7bit", "Errors-To": "libcamera-devel-bounces@lists.libcamera.org", "Sender": "\"libcamera-devel\" <libcamera-devel-bounces@lists.libcamera.org>" }, "content": "Hi,\n\nThis series targets generation of a image thumbnail for the EXIF\nmetadata of the frames captured via android HAL. The thumbnailer is\ntakes in a NV12 buffer and outputs the same but with scaled down(or\nup, if you want) buffer. Embedding the buffer via libexif is still a\nfollow-up task I am looking into, you will find a \\todo in that regard.\n\nTwo [DNI] patches for dev-info are also included, if anyone is\ninterested in building / trying out locally. You shall get the dev\nbranch on my fork: https://github.com/uajain/libcamera.\n\nThanks.\n\nUmang Jain (3):\n android: jpeg: Add a basic NV12 image thumbnailer\n [DNI] jpeg/thumbnailer: write thumbnail to file\n [DNI] Add HOWTO scaler instructions for future reference\n\n scaler-instructions.txt | 18 ++++\n src/android/jpeg/encoder_libjpeg.cpp | 12 +++\n src/android/jpeg/thumbnailer.cpp | 128 +++++++++++++++++++++++++++\n src/android/jpeg/thumbnailer.h | 34 +++++++\n src/android/meson.build | 1 +\n 5 files changed, 193 insertions(+)\n create mode 100644 scaler-instructions.txt\n create mode 100644 src/android/jpeg/thumbnailer.cpp\n create mode 100644 src/android/jpeg/thumbnailer.h" }