{"id":18134,"url":"https://patchwork.libcamera.org/api/patches/18134/?format=json","web_url":"https://patchwork.libcamera.org/patch/18134/","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":"<20230118085953.7027-8-naush@raspberrypi.com>","date":"2023-01-18T08:59:48","name":"[libcamera-devel,v5,07/12] pipeline: raspberrypi: Read config parameters from a file","commit_ref":null,"pull_url":null,"state":"accepted","archived":false,"hash":"c2849df915f8a248dc7bd604590f6c8b34696a28","submitter":{"id":34,"url":"https://patchwork.libcamera.org/api/people/34/?format=json","name":"Naushir Patuck","email":"naush@raspberrypi.com"},"delegate":null,"mbox":"https://patchwork.libcamera.org/patch/18134/mbox/","series":[{"id":3713,"url":"https://patchwork.libcamera.org/api/series/3713/?format=json","web_url":"https://patchwork.libcamera.org/project/libcamera/list/?series=3713","date":"2023-01-18T08:59:41","name":"Raspberry Pi: Platform configuration and buffer allocation improvements","version":5,"mbox":"https://patchwork.libcamera.org/series/3713/mbox/"}],"comments":"https://patchwork.libcamera.org/api/patches/18134/comments/","check":"pending","checks":"https://patchwork.libcamera.org/api/patches/18134/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 3BEBFC3294\n\tfor ;\n\tWed, 18 Jan 2023 09:01:27 +0000 (UTC)","from lancelot.ideasonboard.com (localhost [IPv6:::1])\n\tby lancelot.ideasonboard.com (Postfix) with ESMTP id C72C9625E8;\n\tWed, 18 Jan 2023 10:01:26 +0100 (CET)","from mail-wr1-x42f.google.com (mail-wr1-x42f.google.com\n\t[IPv6:2a00:1450:4864:20::42f])\n\tby lancelot.ideasonboard.com (Postfix) with ESMTPS id BA893625F3\n\tfor ;\n\tWed, 18 Jan 2023 10:01:20 +0100 (CET)","by mail-wr1-x42f.google.com with SMTP id e3so23962098wru.13\n\tfor ;\n\tWed, 18 Jan 2023 01:01:20 -0800 (PST)","from localhost.localdomain ([93.93.133.154])\n\tby smtp.gmail.com with ESMTPSA id\n\ti6-20020adfe486000000b002423dc3b1a9sm30312464wrm.52.2023.01.18.01.01.19\n\t(version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256);\n\tWed, 18 Jan 2023 01:01:19 -0800 (PST)"],"DKIM-Signature":["v=1; 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\n\tWed, 18 Jan 2023 01:01:19 -0800 (PST)","To":"libcamera-devel@lists.libcamera.org","Date":"Wed, 18 Jan 2023 08:59:48 +0000","Message-Id":"<20230118085953.7027-8-naush@raspberrypi.com>","X-Mailer":"git-send-email 2.25.1","In-Reply-To":"<20230118085953.7027-1-naush@raspberrypi.com>","References":"<20230118085953.7027-1-naush@raspberrypi.com>","MIME-Version":"1.0","Content-Transfer-Encoding":"8bit","Subject":"[libcamera-devel] [PATCH v5 07/12] pipeline: raspberrypi: Read\n\tconfig parameters from a file","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":"Naushir Patuck via libcamera-devel\n\t","Reply-To":"Naushir Patuck ","Errors-To":"libcamera-devel-bounces@lists.libcamera.org","Sender":"\"libcamera-devel\" "},"content":"Add the ability to read the platform configuration parameters from a config\nfile provided by the user through the LIBCAMERA_RPI_CONFIG_FILE environment\nvariable. Use the PipelineHandler::configurationFile() helper to determine the\nfull path of the file.\n\nProvide an example configuration file named example.yaml. Currently two\nparameters are available through the json file:\n\n\"min_unicam_buffers\"\nThe minimum number of internal Unicam buffers to allocate.\n\n\"min_total_unicam_buffers\"\nThe minimum number of internal + external Unicam buffers that must be allocated.\n\nSigned-off-by: Naushir Patuck \nReviewed-by: David Plowman \n---\n .../pipeline/raspberrypi/data/example.yaml | 20 +++++++++\n .../pipeline/raspberrypi/data/meson.build | 8 ++++\n .../pipeline/raspberrypi/meson.build | 2 +\n .../pipeline/raspberrypi/raspberrypi.cpp | 45 +++++++++++++++++++\n 4 files changed, 75 insertions(+)\n create mode 100644 src/libcamera/pipeline/raspberrypi/data/example.yaml\n create mode 100644 src/libcamera/pipeline/raspberrypi/data/meson.build","diff":"diff --git a/src/libcamera/pipeline/raspberrypi/data/example.yaml b/src/libcamera/pipeline/raspberrypi/data/example.yaml\nnew file mode 100644\nindex 000000000000..001a906af528\n--- /dev/null\n+++ b/src/libcamera/pipeline/raspberrypi/data/example.yaml\n@@ -0,0 +1,20 @@\n+{\n+ \"version\": 1.0,\n+ \"target\": \"bcm2835\",\n+\n+ \"pipeline_handler\":\n+ {\n+ # The minimum number of internal buffers to be allocated for\n+ # Unicam. This value must be greater than 0, but less than or\n+ # equal to min_total_unicam_buffers.\n+ \"min_unicam_buffers\": 2,\n+\n+ # The minimum total (internal + external) buffer count used for\n+ # Unicam. The number of internal buffers allocated for Unicam is\n+ # given by:\n+ #\n+ # internal buffer count = max(min_unicam_buffers,\n+ # min_total_unicam_buffers - external buffer count)\n+ \"min_total_unicam_buffers\": 4\n+ }\n+}\ndiff --git a/src/libcamera/pipeline/raspberrypi/data/meson.build b/src/libcamera/pipeline/raspberrypi/data/meson.build\nnew file mode 100644\nindex 000000000000..1c70433bbcbc\n--- /dev/null\n+++ b/src/libcamera/pipeline/raspberrypi/data/meson.build\n@@ -0,0 +1,8 @@\n+# SPDX-License-Identifier: CC0-1.0\n+\n+conf_files = files([\n+ 'example.yaml',\n+])\n+\n+install_data(conf_files,\n+ install_dir : pipeline_data_dir / 'raspberrypi')\ndiff --git a/src/libcamera/pipeline/raspberrypi/meson.build b/src/libcamera/pipeline/raspberrypi/meson.build\nindex 6064a3f00122..59e8fb18c555 100644\n--- a/src/libcamera/pipeline/raspberrypi/meson.build\n+++ b/src/libcamera/pipeline/raspberrypi/meson.build\n@@ -6,3 +6,5 @@ libcamera_sources += files([\n 'raspberrypi.cpp',\n 'rpi_stream.cpp',\n ])\n+\n+subdir('data')\ndiff --git a/src/libcamera/pipeline/raspberrypi/raspberrypi.cpp b/src/libcamera/pipeline/raspberrypi/raspberrypi.cpp\nindex 6ed4cc2c7ba7..2b396f1db9b6 100644\n--- a/src/libcamera/pipeline/raspberrypi/raspberrypi.cpp\n+++ b/src/libcamera/pipeline/raspberrypi/raspberrypi.cpp\n@@ -14,6 +14,7 @@\n #include \n #include \n \n+#include \n #include \n #include \n \n@@ -39,6 +40,7 @@\n #include \"libcamera/internal/media_device.h\"\n #include \"libcamera/internal/pipeline_handler.h\"\n #include \"libcamera/internal/v4l2_videodevice.h\"\n+#include \"libcamera/internal/yaml_parser.h\"\n \n #include \"delayed_controls.h\"\n #include \"dma_heaps.h\"\n@@ -1150,6 +1152,7 @@ int PipelineHandlerRPi::queueRequestDevice(Camera *camera, Request *request)\n \t\t\t */\n \t\t\tstream->setExternalBuffer(buffer);\n \t\t}\n+\n \t\t/*\n \t\t * If no buffer is provided by the request for this stream, we\n \t\t * queue a nullptr to the stream to signify that it must use an\n@@ -1683,6 +1686,48 @@ int RPiCameraData::configurePipeline()\n \t\t.minTotalUnicamBuffers = 4,\n \t};\n \n+\tchar const *configFromEnv = utils::secure_getenv(\"LIBCAMERA_RPI_CONFIG_FILE\");\n+\tif (!configFromEnv || *configFromEnv == '\\0')\n+\t\treturn 0;\n+\n+\tstd::string filename = std::string(configFromEnv);\n+\tFile file(filename);\n+\n+\tif (!file.open(File::OpenModeFlag::ReadOnly)) {\n+\t\tLOG(RPI, Error) << \"Failed to open configuration file '\" << filename << \"'\";\n+\t\treturn -EIO;\n+\t}\n+\n+\tLOG(RPI, Info) << \"Using configuration file '\" << filename << \"'\";\n+\n+\tstd::unique_ptr root = YamlParser::parse(file);\n+\tif (!root) {\n+\t\tLOG(RPI, Error) << \"Failed to parse configuration file, using defaults\";\n+\t\treturn -EINVAL;\n+\t}\n+\n+\tstd::optional ver = (*root)[\"version\"].get();\n+\tif (!ver || *ver != 1.0) {\n+\t\tLOG(RPI, Error) << \"Unexpected configuration file version reported\";\n+\t\treturn -EINVAL;\n+\t}\n+\n+\tconst YamlObject &phConfig = (*root)[\"pipeline_handler\"];\n+\tconfig_.minUnicamBuffers =\n+\t\tphConfig[\"min_unicam_buffers\"].get(config_.minUnicamBuffers);\n+\tconfig_.minTotalUnicamBuffers =\n+\t\tphConfig[\"min_total_unicam_buffers\"].get(config_.minTotalUnicamBuffers);\n+\n+\tif (config_.minTotalUnicamBuffers < config_.minUnicamBuffers) {\n+\t\tLOG(RPI, Error) << \"Invalid configuration: min_total_unicam_buffers must be >= min_unicam_buffers\";\n+\t\treturn -EINVAL;\n+\t}\n+\n+\tif (config_.minTotalUnicamBuffers < 1) {\n+\t\tLOG(RPI, Error) << \"Invalid configuration: min_total_unicam_buffers must be >= 1\";\n+\t\treturn -EINVAL;\n+\t}\n+\n \treturn 0;\n }\n \n","prefixes":["libcamera-devel","v5","07/12"]}