{"id":541,"url":"https://patchwork.libcamera.org/api/patches/541/?format=json","web_url":"https://patchwork.libcamera.org/patch/541/","project":{"id":1,"url":"https://patchwork.libcamera.org/api/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":"<20190206060818.13907-27-laurent.pinchart@ideasonboard.com>","date":"2019-02-06T06:08:17","name":"[libcamera-devel,26/27] cam: Add BufferWriter helper","commit_ref":null,"pull_url":null,"state":"accepted","archived":false,"hash":"34330f9ba8b6eb6263472d3e818a4f7c6db734f2","submitter":{"id":2,"url":"https://patchwork.libcamera.org/api/people/2/?format=json","name":"Laurent Pinchart","email":"laurent.pinchart@ideasonboard.com"},"delegate":null,"mbox":"https://patchwork.libcamera.org/patch/541/mbox/","series":[{"id":170,"url":"https://patchwork.libcamera.org/api/series/170/?format=json","web_url":"https://patchwork.libcamera.org/project/libcamera/list/?series=170","date":"2019-02-06T06:07:51","name":"Capture frames throught requests","version":1,"mbox":"https://patchwork.libcamera.org/series/170/mbox/"}],"comments":"https://patchwork.libcamera.org/api/patches/541/comments/","check":"pending","checks":"https://patchwork.libcamera.org/api/patches/541/checks/","tags":{},"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 C3BAE6104C\n\tfor ;\n\tWed, 6 Feb 2019 07:08:29 +0100 (CET)","from pendragon.ideasonboard.com (d51A4137F.access.telenet.be\n\t[81.164.19.127])\n\tby perceval.ideasonboard.com (Postfix) with ESMTPSA id 7146C2D7\n\tfor ;\n\tWed, 6 Feb 2019 07:08:29 +0100 (CET)"],"DKIM-Signature":"v=1; a=rsa-sha256; c=relaxed/simple; d=ideasonboard.com;\n\ts=mail; t=1549433309;\n\tbh=YV6PONACtOw0/26YMEsBf0W+VyGYT+We1vhnqpPw4Ag=;\n\th=From:To:Subject:Date:In-Reply-To:References:From;\n\tb=cyA8wSHf1/mISH5pFB/O9Q6ARYR5YWzh/WjtQlVLQxLo0aQkjTZju1QC6+uK5L2XF\n\tpzyQyKz22yajNQGjj4h2yPUGan9fZqs1ft/X+iWXB8hq/jDMhTDuaS0qdeHuBSC0TA\n\t1mES401DvDhCwsAofjHEvcLRfoSVqqZbSdrESWVM=","From":"Laurent Pinchart ","To":"libcamera-devel@lists.libcamera.org","Date":"Wed, 6 Feb 2019 08:08:17 +0200","Message-Id":"<20190206060818.13907-27-laurent.pinchart@ideasonboard.com>","X-Mailer":"git-send-email 2.19.2","In-Reply-To":"<20190206060818.13907-1-laurent.pinchart@ideasonboard.com>","References":"<20190206060818.13907-1-laurent.pinchart@ideasonboard.com>","MIME-Version":"1.0","Content-Type":"text/plain; charset=UTF-8","Content-Transfer-Encoding":"8bit","Subject":"[libcamera-devel] [PATCH 26/27] cam: Add BufferWriter helper","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":"Wed, 06 Feb 2019 06:08:30 -0000"},"content":"From: Niklas Söderlund \n\nAdd a simpler helper to allow the cam application to write raw captured\nframes to disk.\n\nSigned-off-by: Niklas Söderlund \nSigned-off-by: Jacopo Mondi \nSigned-off-by: Kieran Bingham \nSigned-off-by: Laurent Pinchart \n---\n src/cam/buffer_writer.cpp | 63 +++++++++++++++++++++++++++++++++++++++\n src/cam/buffer_writer.h | 25 ++++++++++++++++\n src/cam/meson.build | 1 +\n 3 files changed, 89 insertions(+)\n create mode 100644 src/cam/buffer_writer.cpp\n create mode 100644 src/cam/buffer_writer.h","diff":"diff --git a/src/cam/buffer_writer.cpp b/src/cam/buffer_writer.cpp\nnew file mode 100644\nindex 000000000000..2d2258b4cd1c\n--- /dev/null\n+++ b/src/cam/buffer_writer.cpp\n@@ -0,0 +1,63 @@\n+/* SPDX-License-Identifier: GPL-2.0-or-later */\n+/*\n+ * Copyright (C) 2019, Google Inc.\n+ *\n+ * buffer_writer.cpp - Buffer writer\n+ */\n+\n+#include \n+#include \n+#include \n+#include \n+#include \n+#include \n+\n+#include \"buffer_writer.h\"\n+\n+BufferWriter::BufferWriter(const std::string &pattern)\n+\t: pattern_(pattern)\n+{\n+}\n+\n+int BufferWriter::write(libcamera::Buffer *buffer)\n+{\n+\tstd::string filename;\n+\tsize_t pos;\n+\tint fd, ret = 0;\n+\n+\tfilename = pattern_;\n+\tpos = filename.find_first_of('#');\n+\tif (pos != std::string::npos) {\n+\t\tstd::stringstream ss;\n+\t\tss << std::setw(6) << std::setfill('0') << buffer->sequence();\n+\t\tfilename.replace(pos, 1, ss.str());\n+\t}\n+\n+\tfd = open(filename.c_str(), O_CREAT | O_WRONLY |\n+\t\t (pos == std::string::npos ? O_APPEND : O_TRUNC),\n+\t\t S_IRUSR | S_IWUSR | S_IRGRP | S_IWGRP | S_IROTH | S_IWOTH);\n+\tif (fd == -1)\n+\t\treturn -errno;\n+\n+\tfor (libcamera::Plane &plane : buffer->planes()) {\n+\t\tvoid *data = plane.mem();\n+\t\tunsigned int length = plane.length();\n+\n+\t\tret = ::write(fd, data, length);\n+\t\tif (ret < 0) {\n+\t\t\tret = -errno;\n+\t\t\tstd::cerr << \"write error: \" << strerror(-ret)\n+\t\t\t\t << std::endl;\n+\t\t\tbreak;\n+\t\t} else if (ret != (int)length) {\n+\t\t\tstd::cerr << \"write error: only \" << ret\n+\t\t\t\t << \" bytes written instead of \"\n+\t\t\t\t << length << std::endl;\n+\t\t\tbreak;\n+\t\t}\n+\t}\n+\n+\tclose(fd);\n+\n+\treturn ret;\n+}\ndiff --git a/src/cam/buffer_writer.h b/src/cam/buffer_writer.h\nnew file mode 100644\nindex 000000000000..9705773e0e39\n--- /dev/null\n+++ b/src/cam/buffer_writer.h\n@@ -0,0 +1,25 @@\n+/* SPDX-License-Identifier: GPL-2.0-or-later */\n+/*\n+ * Copyright (C) 2019, Google Inc.\n+ *\n+ * buffer_writer.h - Buffer writer\n+ */\n+#ifndef __LIBCAMERA_BUFFER_WRITER_H__\n+#define __LIBCAMERA_BUFFER_WRITER_H__\n+\n+#include \n+\n+#include \n+\n+class BufferWriter\n+{\n+public:\n+\tBufferWriter(const std::string &pattern = \"frame-#.bin\");\n+\n+\tint write(libcamera::Buffer *buffer);\n+\n+private:\n+\tstd::string pattern_;\n+};\n+\n+#endif /* __LIBCAMERA_BUFFER_WRITER_H__ */\ndiff --git a/src/cam/meson.build b/src/cam/meson.build\nindex cc647523955f..1a1244fe25cd 100644\n--- a/src/cam/meson.build\n+++ b/src/cam/meson.build\n@@ -1,4 +1,5 @@\n cam_sources = files([\n+ 'buffer_writer.cpp',\n 'event_loop.cpp',\n 'main.cpp',\n 'options.cpp',\n","prefixes":["libcamera-devel","26/27"]}