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\n\tWed, 10 Dec 2025 08:41:02 -0800 (PST)","From":"David Plowman ","To":"libcamera-devel@lists.libcamera.org","Cc":"David Plowman ","Subject":"[PATCH 05/11] ipa: rpi: cam_helper: Add CamHelperDefault class","Date":"Wed, 10 Dec 2025 16:15:20 +0000","Message-ID":"<20251210164055.17856-6-david.plowman@raspberrypi.com>","X-Mailer":"git-send-email 2.47.3","In-Reply-To":"<20251210164055.17856-1-david.plowman@raspberrypi.com>","References":"<20251210164055.17856-1-david.plowman@raspberrypi.com>","MIME-Version":"1.0","Content-Transfer-Encoding":"8bit","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","Errors-To":"libcamera-devel-bounces@lists.libcamera.org","Sender":"\"libcamera-devel\" "},"content":"This will help make \"memory cameras\" work where there is no real\nsensor. This implementation does not really have to do anything except\nprovide a few default values to satisfy any calling code.\n\nWe use \"memory cameras\" to process raw camera images obtained from\nother sources, when in fact no actual camera may be present at all.\n\nSigned-off-by: David Plowman \n---\n src/ipa/rpi/cam_helper/cam_helper_default.cpp | 45 +++++++++++++++++++\n src/ipa/rpi/cam_helper/meson.build | 1 +\n 2 files changed, 46 insertions(+)\n create mode 100644 src/ipa/rpi/cam_helper/cam_helper_default.cpp","diff":"diff --git a/src/ipa/rpi/cam_helper/cam_helper_default.cpp b/src/ipa/rpi/cam_helper/cam_helper_default.cpp\nnew file mode 100644\nindex 00000000..99801cc3\n--- /dev/null\n+++ b/src/ipa/rpi/cam_helper/cam_helper_default.cpp\n@@ -0,0 +1,45 @@\n+/* SPDX-License-Identifier: BSD-2-Clause */\n+/*\n+ * Copyright (C) 2025, Raspberry Pi Ltd\n+ *\n+ * default camera helper for unknown sensors\n+ */\n+\n+#include \n+#include \n+#include \n+#include \n+\n+#include \"cam_helper.h\"\n+\n+using namespace RPiController;\n+\n+class CamHelperDefault : public CamHelper\n+{\n+public:\n+\tCamHelperDefault();\n+\tuint32_t gainCode(double gain) const override;\n+\tdouble gain(uint32_t gainCode) const override;\n+};\n+\n+CamHelperDefault::CamHelperDefault()\n+\t: CamHelper({}, 0)\n+{\n+}\n+\n+uint32_t CamHelperDefault::gainCode([[maybe_unused]] double gain) const\n+{\n+\treturn 0;\n+}\n+\n+double CamHelperDefault::gain([[maybe_unused]] uint32_t gainCode) const\n+{\n+\treturn 1.0;\n+}\n+\n+static CamHelper *create()\n+{\n+\treturn new CamHelperDefault();\n+}\n+\n+static RegisterCamHelper reg(\"default\", &create);\ndiff --git a/src/ipa/rpi/cam_helper/meson.build b/src/ipa/rpi/cam_helper/meson.build\nindex c1eac689..0c968033 100644\n--- a/src/ipa/rpi/cam_helper/meson.build\n+++ b/src/ipa/rpi/cam_helper/meson.build\n@@ -2,6 +2,7 @@\n \n rpi_ipa_cam_helper_sources = files([\n 'cam_helper.cpp',\n+ 'cam_helper_default.cpp',\n 'cam_helper_ov5647.cpp',\n 'cam_helper_imx219.cpp',\n 'cam_helper_imx283.cpp',\n","prefixes":["05/11"]}