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{ "id": 16922, "url": "https://patchwork.libcamera.org/api/patches/16922/?format=api", "web_url": "https://patchwork.libcamera.org/patch/16922/", "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": "<20220802194705.7539-1-laurent.pinchart@ideasonboard.com>", "date": "2022-08-02T19:47:05", "name": "[libcamera-devel] libcamera: v4l2_pixelformat: Implement std::hash specialization", "commit_ref": null, "pull_url": null, "state": "accepted", "archived": false, "hash": "44bc7635e99cfe22550adb7b1cb67cffe05d6267", "submitter": { "id": 2, "url": "https://patchwork.libcamera.org/api/people/2/?format=api", "name": "Laurent Pinchart", "email": "laurent.pinchart@ideasonboard.com" }, "delegate": null, "mbox": "https://patchwork.libcamera.org/patch/16922/mbox/", "series": [ { "id": 3361, "url": "https://patchwork.libcamera.org/api/series/3361/?format=api", "web_url": "https://patchwork.libcamera.org/project/libcamera/list/?series=3361", "date": "2022-08-02T19:47:05", "name": "[libcamera-devel] libcamera: v4l2_pixelformat: Implement std::hash specialization", "version": 1, "mbox": "https://patchwork.libcamera.org/series/3361/mbox/" } ], "comments": "https://patchwork.libcamera.org/api/patches/16922/comments/", "check": "pending", "checks": "https://patchwork.libcamera.org/api/patches/16922/checks/", "tags": {}, "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 B4589BE173\n\tfor <parsemail@patchwork.libcamera.org>;\n\tTue, 2 Aug 2022 19:47:13 +0000 (UTC)", "from lancelot.ideasonboard.com (localhost [IPv6:::1])\n\tby lancelot.ideasonboard.com (Postfix) with ESMTP id 2D8106330E;\n\tTue, 2 Aug 2022 21:47:13 +0200 (CEST)", "from perceval.ideasonboard.com (perceval.ideasonboard.com\n\t[213.167.242.64])\n\tby lancelot.ideasonboard.com (Postfix) with ESMTPS id 764BD603E7\n\tfor <libcamera-devel@lists.libcamera.org>;\n\tTue, 2 Aug 2022 21:47:11 +0200 (CEST)", "from pendragon.ideasonboard.com (62-78-145-57.bb.dnainternet.fi\n\t[62.78.145.57])\n\tby perceval.ideasonboard.com (Postfix) with ESMTPSA id DBDF425B;\n\tTue, 2 Aug 2022 21:47:10 +0200 (CEST)" ], "DKIM-Signature": [ "v=1; 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dkim=pass (1024-bit key; \n\tunprotected) header.d=ideasonboard.com\n\theader.i=@ideasonboard.com\n\theader.b=\"aqCM6Hta\"; dkim-atps=neutral", "To": "libcamera-devel@lists.libcamera.org", "Date": "Tue, 2 Aug 2022 22:47:05 +0300", "Message-Id": "<20220802194705.7539-1-laurent.pinchart@ideasonboard.com>", "X-Mailer": "git-send-email 2.35.1", "MIME-Version": "1.0", "Content-Transfer-Encoding": "8bit", "Subject": "[libcamera-devel] [PATCH] libcamera: v4l2_pixelformat: Implement\n\tstd::hash specialization", "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>", "From": "Laurent Pinchart via libcamera-devel\n\t<libcamera-devel@lists.libcamera.org>", "Reply-To": "Laurent Pinchart <laurent.pinchart@ideasonboard.com>", "Errors-To": "libcamera-devel-bounces@lists.libcamera.org", "Sender": "\"libcamera-devel\" <libcamera-devel-bounces@lists.libcamera.org>" }, "content": "Inject a specialization of std::hash<> for the V4L2PixelFormat class in\nthe std namespace to make it possible to store instances of the class in\nthe std::unordered_map and std::unordered_set containers.\n\nSigned-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>\n---\n include/libcamera/internal/v4l2_pixelformat.h | 13 +++++++++++++\n 1 file changed, 13 insertions(+)", "diff": "diff --git a/include/libcamera/internal/v4l2_pixelformat.h b/include/libcamera/internal/v4l2_pixelformat.h\nindex d5400f90a67e..fcc1dadd4de0 100644\n--- a/include/libcamera/internal/v4l2_pixelformat.h\n+++ b/include/libcamera/internal/v4l2_pixelformat.h\n@@ -8,6 +8,7 @@\n \n #pragma once\n \n+#include <functional>\n #include <ostream>\n #include <stdint.h>\n #include <string>\n@@ -55,3 +56,15 @@ private:\n std::ostream &operator<<(std::ostream &out, const V4L2PixelFormat &f);\n \n } /* namespace libcamera */\n+\n+namespace std {\n+\n+template<>\n+struct hash<libcamera::V4L2PixelFormat> {\n+\tsize_t operator()(libcamera::V4L2PixelFormat const &format) const noexcept\n+\t{\n+\t\treturn hash<uint32_t>{}(format.fourcc());\n+\t}\n+};\n+\n+} /* namespace std */\n", "prefixes": [ "libcamera-devel" ] }