{"id":14630,"url":"https://patchwork.libcamera.org/api/1.1/patches/14630/?format=json","web_url":"https://patchwork.libcamera.org/patch/14630/","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":"<20211118151933.15627-6-david.plowman@raspberrypi.com>","date":"2021-11-18T15:19:31","name":"[libcamera-devel,v6,5/7] libcamera: Support passing ColorSpaces to V4L2 subdevices","commit_ref":null,"pull_url":null,"state":"superseded","archived":false,"hash":"1eeaa2ac47b5baf9b06f3c70b91828ade0a6acae","submitter":{"id":42,"url":"https://patchwork.libcamera.org/api/1.1/people/42/?format=json","name":"David Plowman","email":"david.plowman@raspberrypi.com"},"delegate":null,"mbox":"https://patchwork.libcamera.org/patch/14630/mbox/","series":[{"id":2726,"url":"https://patchwork.libcamera.org/api/1.1/series/2726/?format=json","web_url":"https://patchwork.libcamera.org/project/libcamera/list/?series=2726","date":"2021-11-18T15:19:26","name":"Colour spaces","version":6,"mbox":"https://patchwork.libcamera.org/series/2726/mbox/"}],"comments":"https://patchwork.libcamera.org/api/patches/14630/comments/","check":"pending","checks":"https://patchwork.libcamera.org/api/patches/14630/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 95BECC324E\n\tfor ;\n\tThu, 18 Nov 2021 15:20:36 +0000 (UTC)","from lancelot.ideasonboard.com (localhost [IPv6:::1])\n\tby lancelot.ideasonboard.com (Postfix) with ESMTP id 382C9603B5;\n\tThu, 18 Nov 2021 16:20:36 +0100 (CET)","from mail-wr1-x42d.google.com (mail-wr1-x42d.google.com\n\t[IPv6:2a00:1450:4864:20::42d])\n\tby lancelot.ideasonboard.com (Postfix) with ESMTPS id 824BD60233\n\tfor ;\n\tThu, 18 Nov 2021 16:20:29 +0100 (CET)","by mail-wr1-x42d.google.com with SMTP id s13so12280860wrb.3\n\tfor ;\n\tThu, 18 Nov 2021 07:20:29 -0800 (PST)","from pi4-davidp.pitowers.org\n\t([2a00:1098:3142:14:1ce1:9965:4328:89c4])\n\tby smtp.gmail.com with ESMTPSA id\n\tp12sm147367wro.33.2021.11.18.07.20.28\n\t(version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256);\n\tThu, 18 Nov 2021 07:20:28 -0800 (PST)"],"Authentication-Results":"lancelot.ideasonboard.com;\n\tdkim=fail reason=\"signature verification failed\" (2048-bit key;\n\tunprotected) header.d=raspberrypi.com header.i=@raspberrypi.com\n\theader.b=\"ACkt+fUo\"; 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\n\tThu, 18 Nov 2021 07:20:29 -0800 (PST)","From":"David Plowman ","To":"laurent.pinchart@ideasonboard.com, kieran.bingham@ideasonboard.com,\n\thverkuil-cisco@xs4all.nl, tfiga@google.com, jacopo@jmondi.org,\n\tnaush@raspberrypi.com, libcamera-devel@lists.libcamera.org","Date":"Thu, 18 Nov 2021 15:19:31 +0000","Message-Id":"<20211118151933.15627-6-david.plowman@raspberrypi.com>","X-Mailer":"git-send-email 2.20.1","In-Reply-To":"<20211118151933.15627-1-david.plowman@raspberrypi.com>","References":"<20211118151933.15627-1-david.plowman@raspberrypi.com>","MIME-Version":"1.0","Content-Transfer-Encoding":"8bit","Subject":"[libcamera-devel] [PATCH v6 5/7] libcamera: Support passing\n\tColorSpaces to V4L2 subdevices","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":"The ColorSpace from the StreamConfiguration is now handled\nappropriately in the V4L2Subdevice.\n\nSigned-off-by: David Plowman \n---\n include/libcamera/internal/v4l2_subdevice.h | 2 ++\n src/libcamera/camera_sensor.cpp | 1 +\n src/libcamera/v4l2_subdevice.cpp | 35 ++++++++++++++++++++-\n 3 files changed, 37 insertions(+), 1 deletion(-)","diff":"diff --git a/include/libcamera/internal/v4l2_subdevice.h b/include/libcamera/internal/v4l2_subdevice.h\nindex 97b89fb9..a6a0a870 100644\n--- a/include/libcamera/internal/v4l2_subdevice.h\n+++ b/include/libcamera/internal/v4l2_subdevice.h\n@@ -14,6 +14,7 @@\n #include \n #include \n \n+#include \n #include \n \n #include \"libcamera/internal/formats.h\"\n@@ -27,6 +28,7 @@ class MediaDevice;\n struct V4L2SubdeviceFormat {\n \tuint32_t mbus_code;\n \tSize size;\n+\tstd::optional colorSpace;\n \n \tconst std::string toString() const;\n \tuint8_t bitsPerPixel() const;\ndiff --git a/src/libcamera/camera_sensor.cpp b/src/libcamera/camera_sensor.cpp\nindex 9fdb8c09..6fcd1c1d 100644\n--- a/src/libcamera/camera_sensor.cpp\n+++ b/src/libcamera/camera_sensor.cpp\n@@ -613,6 +613,7 @@ V4L2SubdeviceFormat CameraSensor::getFormat(const std::vector &mbu\n \tV4L2SubdeviceFormat format{\n \t\t.mbus_code = bestCode,\n \t\t.size = *bestSize,\n+\t\t.colorSpace = ColorSpace::Raw,\n \t};\n \n \treturn format;\ndiff --git a/src/libcamera/v4l2_subdevice.cpp b/src/libcamera/v4l2_subdevice.cpp\nindex 023e2328..b60ab69a 100644\n--- a/src/libcamera/v4l2_subdevice.cpp\n+++ b/src/libcamera/v4l2_subdevice.cpp\n@@ -168,6 +168,16 @@ const std::map formatInfoMap = {\n * \\brief The image size in pixels\n */\n \n+/**\n+ * \\var V4L2SubdeviceFormat::colorSpace\n+ * \\brief The color space of the pixels\n+ *\n+ * The color space of the image. When setting the format this may be\n+ * unset, in which case the driver gets to use its default color space.\n+ * After being set, this value should contain the color space that the\n+ * was actually used.\n+ */\n+\n /**\n * \\brief Assemble and return a string describing the format\n * \\return A string describing the V4L2SubdeviceFormat\n@@ -400,6 +410,16 @@ int V4L2Subdevice::getFormat(unsigned int pad, V4L2SubdeviceFormat *format,\n \tformat->size.height = subdevFmt.format.height;\n \tformat->mbus_code = subdevFmt.format.code;\n \n+\tformat->colorSpace = toColorSpace(subdevFmt.format);\n+\t/*\n+\t * This warning can be ignored on metadata pads. These are normally\n+\t * pads other than zero.\n+\t * \\todo find a way to detect metadata pads and ignore them\n+\t */\n+\tif (!format->colorSpace)\n+\t\tLOG(V4L2, Warning)\n+\t\t\t<< \"Retrieved unrecognised color space on pad \" << pad;\n+\n \treturn 0;\n }\n \n@@ -418,6 +438,9 @@ int V4L2Subdevice::getFormat(unsigned int pad, V4L2SubdeviceFormat *format,\n int V4L2Subdevice::setFormat(unsigned int pad, V4L2SubdeviceFormat *format,\n \t\t\t Whence whence)\n {\n+\tif (!format->colorSpace)\n+\t\tLOG(V4L2, Error) << \"Setting an undefined color space\";\n+\n \tstruct v4l2_subdev_format subdevFmt = {};\n \tsubdevFmt.which = whence == ActiveFormat ? V4L2_SUBDEV_FORMAT_ACTIVE\n \t\t\t: V4L2_SUBDEV_FORMAT_TRY;\n@@ -427,7 +450,13 @@ int V4L2Subdevice::setFormat(unsigned int pad, V4L2SubdeviceFormat *format,\n \tsubdevFmt.format.code = format->mbus_code;\n \tsubdevFmt.format.field = V4L2_FIELD_NONE;\n \n-\tint ret = ioctl(VIDIOC_SUBDEV_S_FMT, &subdevFmt);\n+\tint ret = fromColorSpace(format->colorSpace, subdevFmt.format);\n+\tif (ret < 0)\n+\t\tLOG(V4L2, Warning)\n+\t\t\t<< \"Setting color space unrecognised by V4L2: \"\n+\t\t\t<< ColorSpace::toString(format->colorSpace);\n+\n+\tret = ioctl(VIDIOC_SUBDEV_S_FMT, &subdevFmt);\n \tif (ret) {\n \t\tLOG(V4L2, Error)\n \t\t\t<< \"Unable to set format on pad \" << pad\n@@ -439,6 +468,10 @@ int V4L2Subdevice::setFormat(unsigned int pad, V4L2SubdeviceFormat *format,\n \tformat->size.height = subdevFmt.format.height;\n \tformat->mbus_code = subdevFmt.format.code;\n \n+\tformat->colorSpace = toColorSpace(subdevFmt.format);\n+\tif (!format->colorSpace)\n+\t\tLOG(V4L2, Warning) << \"Unrecognised color space has been set\";\n+\n \treturn 0;\n }\n \n","prefixes":["libcamera-devel","v6","5/7"]}