{"id":16922,"url":"https://patchwork.libcamera.org/api/1.1/patches/16922/?format=json","web_url":"https://patchwork.libcamera.org/patch/16922/","project":{"id":1,"url":"https://patchwork.libcamera.org/api/1.1/projects/1/?format=json","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/1.1/people/2/?format=json","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/1.1/series/3361/?format=json","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":"","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 ;\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 ;\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":"","List-Unsubscribe":",\n\t","List-Archive":"","List-Post":"","List-Help":"","List-Subscribe":",\n\t","From":"Laurent Pinchart via libcamera-devel\n\t","Reply-To":"Laurent Pinchart ","Errors-To":"libcamera-devel-bounces@lists.libcamera.org","Sender":"\"libcamera-devel\" "},"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 \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 \n #include \n #include \n #include \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 {\n+\tsize_t operator()(libcamera::V4L2PixelFormat const &format) const noexcept\n+\t{\n+\t\treturn hash{}(format.fourcc());\n+\t}\n+};\n+\n+} /* namespace std */\n","prefixes":["libcamera-devel"]}