{"id":318,"url":"https://patchwork.libcamera.org/api/1.1/patches/318/?format=json","web_url":"https://patchwork.libcamera.org/patch/318/","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":"<20190121230640.8783-3-niklas.soderlund@ragnatech.se>","date":"2019-01-21T23:06:38","name":"[libcamera-devel,RFC,2/4] libcamera: stream: add basic stream class","commit_ref":null,"pull_url":null,"state":"rejected","archived":false,"hash":"b995d8438cac3baaa7fc22578fec1b9097d5f1ea","submitter":{"id":5,"url":"https://patchwork.libcamera.org/api/1.1/people/5/?format=json","name":"Niklas Söderlund","email":"niklas.soderlund@ragnatech.se"},"delegate":null,"mbox":"https://patchwork.libcamera.org/patch/318/mbox/","series":[{"id":109,"url":"https://patchwork.libcamera.org/api/1.1/series/109/?format=json","web_url":"https://patchwork.libcamera.org/project/libcamera/list/?series=109","date":"2019-01-21T23:06:36","name":"libcamera: add base for applications to configure cameras","version":1,"mbox":"https://patchwork.libcamera.org/series/109/mbox/"}],"comments":"https://patchwork.libcamera.org/api/patches/318/comments/","check":"pending","checks":"https://patchwork.libcamera.org/api/patches/318/checks/","tags":{},"headers":{"Return-Path":"","Received":["from bin-mail-out-06.binero.net (bin-mail-out-06.binero.net\n\t[195.74.38.229])\n\tby lancelot.ideasonboard.com (Postfix) with ESMTPS id AEE1760B2D\n\tfor ;\n\tTue, 22 Jan 2019 00:07:15 +0100 (CET)","from bismarck.berto.se (unknown [89.233.230.99])\n\tby bin-vsp-out-02.atm.binero.net (Halon) with ESMTPA\n\tid 497f7b30-1dd1-11e9-874f-005056917f90;\n\tTue, 22 Jan 2019 00:07:13 +0100 (CET)"],"X-Halon-ID":"497f7b30-1dd1-11e9-874f-005056917f90","Authorized-sender":"niklas@soderlund.pp.se","From":"=?utf-8?q?Niklas_S=C3=B6derlund?= ","To":"libcamera-devel@lists.libcamera.org","Date":"Tue, 22 Jan 2019 00:06:38 +0100","Message-Id":"<20190121230640.8783-3-niklas.soderlund@ragnatech.se>","X-Mailer":"git-send-email 2.20.1","In-Reply-To":"<20190121230640.8783-1-niklas.soderlund@ragnatech.se>","References":"<20190121230640.8783-1-niklas.soderlund@ragnatech.se>","MIME-Version":"1.0","Content-Type":"text/plain; charset=UTF-8","Content-Transfer-Encoding":"8bit","Subject":"[libcamera-devel] [RFC 2/4] libcamera: stream: add basic stream\n\tclass","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":"Mon, 21 Jan 2019 23:07:15 -0000"},"content":"Add a extremely simple Stream implementation. The idea is that once\ncapability support is added to the library each stream would describe\nit's capabilities using this class. A application would then select one\nor more streams based on these capabilities and using there numerical ID\nconfigure and capture those streams.\n\nAt this stage all the Stream class provides is a way for a Camera object\nto communicate which stream IDs it's able to operate on. This basically\nlimits the usefulness of the object to cameras which only provides one\nstream per camera.\n\nSigned-off-by: Niklas Söderlund \n---\n include/libcamera/libcamera.h | 1 +\n include/libcamera/meson.build | 1 +\n include/libcamera/stream.h | 25 +++++++++++++++\n src/libcamera/meson.build | 1 +\n src/libcamera/stream.cpp | 58 +++++++++++++++++++++++++++++++++++\n 5 files changed, 86 insertions(+)\n create mode 100644 include/libcamera/stream.h\n create mode 100644 src/libcamera/stream.cpp","diff":"diff --git a/include/libcamera/libcamera.h b/include/libcamera/libcamera.h\nindex c0511cf6d662b63f..272dfd5e4a67d5de 100644\n--- a/include/libcamera/libcamera.h\n+++ b/include/libcamera/libcamera.h\n@@ -12,6 +12,7 @@\n #include \n #include \n #include \n+#include \n #include \n \n #endif /* __LIBCAMERA_LIBCAMERA_H__ */\ndiff --git a/include/libcamera/meson.build b/include/libcamera/meson.build\nindex d7cb55ba4a49e1e8..54a680787e5c17aa 100644\n--- a/include/libcamera/meson.build\n+++ b/include/libcamera/meson.build\n@@ -5,6 +5,7 @@ libcamera_api = files([\n 'event_notifier.h',\n 'libcamera.h',\n 'signal.h',\n+ 'stream.h',\n 'timer.h',\n ])\n \ndiff --git a/include/libcamera/stream.h b/include/libcamera/stream.h\nnew file mode 100644\nindex 0000000000000000..8386c68e33fe57d0\n--- /dev/null\n+++ b/include/libcamera/stream.h\n@@ -0,0 +1,25 @@\n+/* SPDX-License-Identifier: LGPL-2.1-or-later */\n+/*\n+ * Copyright (C) 2019, Google Inc.\n+ *\n+ * stream.h - Stream object interface\n+ */\n+#ifndef __LIBCAMERA_STREAM_H__\n+#define __LIBCAMERA_STREAM_H__\n+\n+namespace libcamera {\n+\n+class Stream final\n+{\n+public:\n+\tStream(unsigned int id);\n+\n+\tunsigned int id() { return id_; };\n+\n+private:\n+\tunsigned int id_;\n+};\n+\n+} /* namespace libcamera */\n+\n+#endif /* __LIBCAMERA_STREAM_H__ */\ndiff --git a/src/libcamera/meson.build b/src/libcamera/meson.build\nindex f9f25c0ecf1564cc..9f6ff99eebe2f5bc 100644\n--- a/src/libcamera/meson.build\n+++ b/src/libcamera/meson.build\n@@ -10,6 +10,7 @@ libcamera_sources = files([\n 'media_object.cpp',\n 'pipeline_handler.cpp',\n 'signal.cpp',\n+ 'stream.cpp',\n 'timer.cpp',\n 'v4l2_device.cpp',\n ])\ndiff --git a/src/libcamera/stream.cpp b/src/libcamera/stream.cpp\nnew file mode 100644\nindex 0000000000000000..db47c24760b360b4\n--- /dev/null\n+++ b/src/libcamera/stream.cpp\n@@ -0,0 +1,58 @@\n+/* SPDX-License-Identifier: LGPL-2.1-or-later */\n+/*\n+ * Copyright (C) 2019, Google Inc.\n+ *\n+ * stream.cpp - Stream information\n+ */\n+\n+#include \n+\n+/**\n+ * \\file stream.h\n+ * \\brief Stream information handling\n+ *\n+ * Each camera device is composed of one or multiple video stream connected\n+ * to one image source. The Stream class holds all static information about\n+ * a stream belonging to a camera device. A camera should provide a separate\n+ * Stream object for every stream it can support.\n+ *\n+ * Camera devices expose at least one stream, and may expose additional streams\n+ * based on the device capabilities. This can be used, for instance, to\n+ * implement concurrent viewfinder and video capture, or concurrent viewfinder,\n+ * video capture and still image capture.\n+ */\n+\n+namespace libcamera {\n+\n+/**\n+ * \\class Stream\n+ * \\brief Stream information carrier\n+ *\n+ * The Stream class is a model of all static information which can be\n+ * associated with a video stream. It provides the mapping of a stream\n+ * capabilities to a numerical ID which should be used when configuring\n+ * the camera which might contain a collections of streams.\n+ *\n+ * \\todo Add capabilities to the Stream API. Without this the Stream class\n+ *\t only serves to map streams of unknown capabilities to a stream ID.\n+ *\t This in it self is important as it allows applications to configure\n+ *\t and capture from one or more streams even if it won't be able to\n+ *\t select the optimal stream for the task.\n+ */\n+\n+/**\n+ * \\brief Create a new stream with a ID\n+ * \\param[in] id Numerical ID which should be unique for the camera device the stream belongs to.\n+ */\n+Stream::Stream(unsigned int id)\n+\t: id_(id)\n+{\n+}\n+\n+/**\n+ * \\fn Stream::id()\n+ * \\brief Retrieve the streams ID\n+ * \\return The stream ID\n+ */\n+\n+} /* namespace libcamera */\n","prefixes":["libcamera-devel","RFC","2/4"]}