{"id":24829,"url":"https://patchwork.libcamera.org/api/1.1/patches/24829/?format=json","web_url":"https://patchwork.libcamera.org/patch/24829/","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":"<20251026233048.175689-7-kieran.bingham@ideasonboard.com>","date":"2025-10-26T23:30:43","name":"[6/6] ipa: rkisp1: cproc: Provide a Hue control","commit_ref":null,"pull_url":null,"state":"superseded","archived":false,"hash":"6a1fd86a16b8ae4cf628b01c778fbfb7515c7c4b","submitter":{"id":4,"url":"https://patchwork.libcamera.org/api/1.1/people/4/?format=json","name":"Kieran Bingham","email":"kieran.bingham@ideasonboard.com"},"delegate":null,"mbox":"https://patchwork.libcamera.org/patch/24829/mbox/","series":[{"id":5532,"url":"https://patchwork.libcamera.org/api/1.1/series/5532/?format=json","web_url":"https://patchwork.libcamera.org/project/libcamera/list/?series=5532","date":"2025-10-26T23:30:37","name":"libipa: Introduce a Quantized type","version":1,"mbox":"https://patchwork.libcamera.org/series/5532/mbox/"}],"comments":"https://patchwork.libcamera.org/api/patches/24829/comments/","check":"pending","checks":"https://patchwork.libcamera.org/api/patches/24829/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 720A2BE080\n\tfor ;\n\tSun, 26 Oct 2025 23:31:06 +0000 (UTC)","from lancelot.ideasonboard.com (localhost [IPv6:::1])\n\tby lancelot.ideasonboard.com (Postfix) with ESMTP id CD9C160751;\n\tMon, 27 Oct 2025 00:31:03 +0100 (CET)","from perceval.ideasonboard.com (perceval.ideasonboard.com\n\t[213.167.242.64])\n\tby lancelot.ideasonboard.com (Postfix) with ESMTPS id 2BCE1606F8\n\tfor ;\n\tMon, 27 Oct 2025 00:30:55 +0100 (CET)","from charm.hippo-penny.ts.net (unknown [209.38.108.23])\n\tby perceval.ideasonboard.com (Postfix) with ESMTPSA id B8A69177B;\n\tMon, 27 Oct 2025 00:29:07 +0100 (CET)"],"Authentication-Results":"lancelot.ideasonboard.com; dkim=pass (1024-bit key;\n\tunprotected) header.d=ideasonboard.com header.i=@ideasonboard.com\n\theader.b=\"HbQxr1i3\"; dkim-atps=neutral","DKIM-Signature":"v=1; a=rsa-sha256; c=relaxed/simple; d=ideasonboard.com;\n\ts=mail; t=1761521347;\n\tbh=KP+YWnztm0c8cLSMzDHVFJJYgv58QJA33dIgfbcoYJI=;\n\th=From:To:Cc:Subject:Date:In-Reply-To:References:From;\n\tb=HbQxr1i34M5giUy2XfueB8dZJvHQHpkeoHEwLQyH0Z222fUKQGxrS5pKSgoTOG1YV\n\t7h+QPWLWUbVXJNvj3uc81F/3XOO3UU6RXnqnOTSOeyNokU53zceJzMmzDKATwct1qD\n\tVpSYiFnqVI6KQCxsvJH4436i2ISAKO1atdKQBuMw=","From":"Kieran Bingham ","To":"libcamera devel ","Cc":"Kieran Bingham ","Subject":"[PATCH 6/6] ipa: rkisp1: cproc: Provide a Hue control","Date":"Sun, 26 Oct 2025 23:30:43 +0000","Message-ID":"<20251026233048.175689-7-kieran.bingham@ideasonboard.com>","X-Mailer":"git-send-email 2.51.0","In-Reply-To":"<20251026233048.175689-1-kieran.bingham@ideasonboard.com>","References":"<20251026233048.175689-1-kieran.bingham@ideasonboard.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":"The RKISP1 supports a configurable Hue as part of the colour processing\nunit (cproc).\n\nThis is implemented as a phase shift of the chrominance values between\n-90 and +87.188 degrees.\n\nImplement the new control converting to the hardware scale accordingly\nand report the applied control in the completed request metadata.\n\nSigned-off-by: Kieran Bingham \n---\n src/ipa/rkisp1/algorithms/cproc.cpp | 38 +++++++++++++++++++++++++++++\n src/ipa/rkisp1/ipa_context.h | 2 ++\n 2 files changed, 40 insertions(+)","diff":"diff --git a/src/ipa/rkisp1/algorithms/cproc.cpp b/src/ipa/rkisp1/algorithms/cproc.cpp\nindex d19d808cce4d..a92bf05131ba 100644\n--- a/src/ipa/rkisp1/algorithms/cproc.cpp\n+++ b/src/ipa/rkisp1/algorithms/cproc.cpp\n@@ -39,6 +39,7 @@ namespace {\n \n constexpr float kDefaultBrightness = 0.0f;\n constexpr float kDefaultContrast = 1.0f;\n+constexpr float kDefaultHue = 0.0f;\n constexpr float kDefaultSaturation = 1.0f;\n \n class BrightnessQ : public Quantizer\n@@ -59,6 +60,27 @@ public:\n \t}\n };\n \n+class HueQ : public Quantizer\n+{\n+public:\n+\tHueQ(float val) { set(val); }\n+\tHueQ(int8_t val) { set(val); }\n+\n+\tstatic constexpr float MaxDegrees = 90;\n+\tstatic constexpr float q = 128.0f / MaxDegrees;\n+\n+\tint8_t fromFloat(float v) const override\n+\t{\n+\t\tint quantized = std::lround(v * q);\n+\t\treturn static_cast(std::clamp(quantized, -128, 127));\n+\t}\n+\n+\tfloat toFloat(int8_t v) const override\n+\t{\n+\t\treturn static_cast(v) / q;\n+\t}\n+};\n+\n class ContrastSaturationQuantizer : public Quantizer\n {\n public:\n@@ -92,6 +114,7 @@ int ColorProcessing::init(IPAContext &context,\n \n \tcmap[&controls::Brightness] = ControlInfo(-1.0f, 0.993f, kDefaultBrightness);\n \tcmap[&controls::Contrast] = ControlInfo(0.0f, 1.993f, kDefaultContrast);\n+\tcmap[&controls::Hue] = ControlInfo(-90.0f, 90.0f, kDefaultHue);\n \tcmap[&controls::Saturation] = ControlInfo(0.0f, 1.993f, kDefaultSaturation);\n \n \treturn 0;\n@@ -107,6 +130,7 @@ int ColorProcessing::configure(IPAContext &context,\n \n \tcproc.brightness = BrightnessQ(kDefaultBrightness);\n \tcproc.contrast = ContrastQ(kDefaultContrast);\n+\tcproc.hue = HueQ(kDefaultHue);\n \tcproc.saturation = SaturationQ(kDefaultSaturation);\n \n \treturn 0;\n@@ -148,6 +172,17 @@ void ColorProcessing::queueRequest(IPAContext &context,\n \t\tLOG(RkISP1CProc, Debug) << \"Set contrast to \" << value.value();\n \t}\n \n+\tconst auto &hue = controls.get(controls::Hue);\n+\tif (hue) {\n+\t\tHueQ value = *hue;\n+\t\tif (cproc.hue != value) {\n+\t\t\tcproc.hue = value;\n+\t\t\tupdate = true;\n+\t\t}\n+\n+\t\tLOG(RkISP1CProc, Debug) << \"Set hue to \" << value.value();\n+\t}\n+\n \tconst auto saturation = controls.get(controls::Saturation);\n \tif (saturation) {\n \t\tSaturationQ value = *saturation;\n@@ -161,6 +196,7 @@ void ColorProcessing::queueRequest(IPAContext &context,\n \n \tframeContext.cproc.brightness = cproc.brightness;\n \tframeContext.cproc.contrast = cproc.contrast;\n+\tframeContext.cproc.hue = cproc.hue;\n \tframeContext.cproc.saturation = cproc.saturation;\n \tframeContext.cproc.update = update;\n }\n@@ -181,6 +217,7 @@ void ColorProcessing::prepare([[maybe_unused]] IPAContext &context,\n \tconfig.setEnabled(true);\n \tconfig->brightness = frameContext.cproc.brightness.quantized();\n \tconfig->contrast = frameContext.cproc.contrast.quantized();\n+\tconfig->hue = frameContext.cproc.hue.quantized();\n \tconfig->sat = frameContext.cproc.saturation.quantized();\n }\n \n@@ -193,6 +230,7 @@ void ColorProcessing::process([[maybe_unused]] IPAContext &context, [[maybe_unus\n {\n \tmetadata.set(controls::Brightness, frameContext.cproc.brightness.value());\n \tmetadata.set(controls::Contrast, frameContext.cproc.contrast.value());\n+\tmetadata.set(controls::Hue, frameContext.cproc.hue.value());\n \tmetadata.set(controls::Saturation, frameContext.cproc.saturation.value());\n }\n \ndiff --git a/src/ipa/rkisp1/ipa_context.h b/src/ipa/rkisp1/ipa_context.h\nindex b7cdfc36b275..51281e7f7b82 100644\n--- a/src/ipa/rkisp1/ipa_context.h\n+++ b/src/ipa/rkisp1/ipa_context.h\n@@ -118,6 +118,7 @@ struct IPAActiveState {\n \tstruct {\n \t\tQuantized brightness;\n \t\tQuantized contrast;\n+\t\tQuantized hue;\n \t\tQuantized saturation;\n \t} cproc;\n \n@@ -172,6 +173,7 @@ struct IPAFrameContext : public FrameContext {\n \tstruct {\n \t\tQuantized brightness;\n \t\tQuantized contrast;\n+\t\tQuantized hue;\n \t\tQuantized saturation;\n \t\tbool update;\n \t} cproc;\n","prefixes":["6/6"]}