{"id":24825,"url":"https://patchwork.libcamera.org/api/patches/24825/?format=json","web_url":"https://patchwork.libcamera.org/patch/24825/","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":"<20251026233048.175689-3-kieran.bingham@ideasonboard.com>","date":"2025-10-26T23:30:39","name":"[2/6] test: libipa: Add tests for Quantizers","commit_ref":null,"pull_url":null,"state":"superseded","archived":false,"hash":"790eb93534ac981f904f0038a291da31879c188f","submitter":{"id":4,"url":"https://patchwork.libcamera.org/api/people/4/?format=json","name":"Kieran Bingham","email":"kieran.bingham@ideasonboard.com"},"delegate":null,"mbox":"https://patchwork.libcamera.org/patch/24825/mbox/","series":[{"id":5532,"url":"https://patchwork.libcamera.org/api/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/24825/comments/","check":"pending","checks":"https://patchwork.libcamera.org/api/patches/24825/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 EB980BE080\n\tfor ;\n\tSun, 26 Oct 2025 23:31:01 +0000 (UTC)","from lancelot.ideasonboard.com (localhost [IPv6:::1])\n\tby lancelot.ideasonboard.com (Postfix) with ESMTP id 43F4F606F5;\n\tMon, 27 Oct 2025 00:30:58 +0100 (CET)","from perceval.ideasonboard.com (perceval.ideasonboard.com\n\t[213.167.242.64])\n\tby lancelot.ideasonboard.com (Postfix) with ESMTPS id 3EDB6606E6\n\tfor ;\n\tMon, 27 Oct 2025 00:30:54 +0100 (CET)","from charm.hippo-penny.ts.net (unknown [209.38.108.23])\n\tby perceval.ideasonboard.com (Postfix) with ESMTPSA id 821B9E9B;\n\tMon, 27 Oct 2025 00:29:06 +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=\"rlxMtj8E\"; dkim-atps=neutral","DKIM-Signature":"v=1; a=rsa-sha256; c=relaxed/simple; d=ideasonboard.com;\n\ts=mail; t=1761521346;\n\tbh=CenjjyPxspM0Qea0KDApsn4fVOkAyGFz8PmOvbVj8Oo=;\n\th=From:To:Cc:Subject:Date:In-Reply-To:References:From;\n\tb=rlxMtj8EstVSPg9Xwpf8lhRj7U6htgnTdEBXI+CpPgzC4Eyr2CcCvibLpzokPxamv\n\tUALgI8Ewpg54LBPu4kHX7xKmW6HOdlmWAxKW5+fWEypxP6xwpxUoP821p38BIvcrqk\n\tJwktoSgCRaaQSbf3HaN3ppz+LkE8FCuDgwMCx+MY=","From":"Kieran Bingham ","To":"libcamera devel ","Cc":"Kieran Bingham ","Subject":"[PATCH 2/6] test: libipa: Add tests for Quantizers","Date":"Sun, 26 Oct 2025 23:30:39 +0000","Message-ID":"<20251026233048.175689-3-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-Type":"text/plain; charset=UTF-8","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":"Signed-off-by: Kieran Bingham \n---\n test/ipa/libipa/meson.build | 1 +\n test/ipa/libipa/quantized.cpp | 149 ++++++++++++++++++++++++++++++++++\n 2 files changed, 150 insertions(+)\n create mode 100644 test/ipa/libipa/quantized.cpp","diff":"diff --git a/test/ipa/libipa/meson.build b/test/ipa/libipa/meson.build\nindex 2070bed70222..c3e255871f4f 100644\n--- a/test/ipa/libipa/meson.build\n+++ b/test/ipa/libipa/meson.build\n@@ -5,6 +5,7 @@ libipa_test = [\n {'name': 'histogram', 'sources': ['histogram.cpp']},\n {'name': 'interpolator', 'sources': ['interpolator.cpp']},\n {'name': 'pwl', 'sources': ['pwl.cpp'] },\n+ {'name': 'quantized', 'sources': ['quantized.cpp']},\n ]\n \n foreach test : libipa_test\ndiff --git a/test/ipa/libipa/quantized.cpp b/test/ipa/libipa/quantized.cpp\nnew file mode 100644\nindex 000000000000..51db62a1b88a\n--- /dev/null\n+++ b/test/ipa/libipa/quantized.cpp\n@@ -0,0 +1,149 @@\n+/* SPDX-License-Identifier: GPL-2.0-or-later */\n+/*\n+ * Copyright (C) 2025, Ideas on Board\n+ *\n+ * Dual Type and Quantizer tests\n+ */\n+\n+#include \"../src/ipa/libipa/quantized.h\"\n+\n+#include \n+#include \n+#include \n+#include \n+#include \n+\n+#include \"test.h\"\n+\n+using namespace std;\n+using namespace libcamera;\n+using namespace ipa;\n+\n+class BrightnessHueQuantizer : public Quantizer\n+{\n+public:\n+\tBrightnessHueQuantizer(float val) { set(val); }\n+\tBrightnessHueQuantizer(int8_t val) { set(val); }\n+\n+\tint8_t fromFloat(float v) const override\n+\t{\n+\t\tint quantized = std::lround(v * 128.0f);\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) / 128.0f;\n+\t}\n+};\n+\n+class ContrastSaturationQuantizer : public Quantizer\n+{\n+public:\n+\tContrastSaturationQuantizer(float val) { set(val); }\n+\tContrastSaturationQuantizer(uint8_t val) { set(val); }\n+\n+\tuint8_t fromFloat(float v) const override\n+\t{\n+\t\tint quantized = std::lround(v * 128.0f);\n+\t\treturn static_cast(std::clamp(quantized, 0, 255));\n+\t}\n+\n+\tfloat toFloat(uint8_t v) const override\n+\t{\n+\t\treturn static_cast(v) / 128.0f;\n+\t}\n+};\n+\n+using BrightnessQ = BrightnessHueQuantizer;\n+using HueQ = BrightnessHueQuantizer;\n+using ContrastQ = ContrastSaturationQuantizer;\n+using SaturationQ = ContrastSaturationQuantizer;\n+\n+class QuantizedTest : public Test\n+{\n+protected:\n+\tint run()\n+\t{\n+\t\t/* Test construction from float */\n+\t\t{\n+\t\t\tBrightnessQ b(0.5f);\n+\t\t\tif (b.quantized() != 64 || std::abs(b.value() - 0.5f) > 0.01f)\n+\t\t\t\treturn TestFail;\n+\t\t}\n+\n+\t\t/* Test construction from T */\n+\t\t{\n+\t\t\tContrastQ c(uint8_t(128));\n+\t\t\tif (c.quantized() != 128 || std::abs(c.value() - 1.0f) > 0.01f)\n+\t\t\t\treturn TestFail;\n+\t\t}\n+\n+\t\t/*\n+\t\t * Test construction from non-float/non-T type (Expected Fail)\n+\t\t * These should be a compile-time error if uncommented:\n+\t\t */\n+\t\t// BrightnessQ bad1(15); // overloaded ‘BrightnessHueQuantizer(int)’ is ambiguous\n+\t\t// BrightnessQ bad2(0xff); // overloaded ‘BrightnessHueQuantizer(int)’ is ambiguous\n+\t\t// ContrastQ bad3(0x33); // overloaded ‘ContrastSaturationQuantizer(int)’ is ambiguous\n+\t\t// ContrastQ bad4(55U); // overloaded ‘ContrastSaturationQuantizer(unsigned int)’ is ambiguous\n+\n+\t\t/* Test equality */\n+\t\t{\n+\t\t\tBrightnessQ b1(0.5f), b2((int8_t)64);\n+\t\t\tif (!(b1 == b2))\n+\t\t\t\treturn TestFail;\n+\t\t}\n+\n+\t\t/* Test inequality */\n+\t\t{\n+\t\t\tBrightnessQ b1(0.5f), b2(-0.5f);\n+\t\t\tif (b1 == b2)\n+\t\t\t\treturn TestFail;\n+\t\t}\n+\n+\t\t/* Test copying */\n+\t\t{\n+\t\t\tBrightnessQ b1(0.25f);\n+\t\t\tBrightnessQ b2 = b1;\n+\t\t\tif (!(b1 == b2))\n+\t\t\t\treturn TestFail;\n+\t\t}\n+\n+\t\t/* Test moving */\n+\t\t{\n+\t\t\tBrightnessQ b1(0.25f);\n+\t\t\tBrightnessQ b2 = std::move(b1); // Allow move semantics\n+\t\t\tif (b2.value() != 0.25f)\n+\t\t\t\treturn TestFail;\n+\t\t}\n+\n+\t\t/* Test assignment */\n+\t\t{\n+\t\t\tContrastQ c1(1.5f);\n+\t\t\tContrastQ c2(0.0f);\n+\t\t\tc2 = c1;\n+\t\t\tif (!(c1 == c2))\n+\t\t\t\treturn TestFail;\n+\t\t}\n+\n+\t\t/* Test assignment / storage in generic type */\n+\t\t{\n+\t\t\tContrastQ c(1.5f);\n+\t\t\tQuantized q;\n+\n+\t\t\tq = c;\n+\t\t\tif (q.value() != c.value())\n+\t\t\t\treturn TestFail;\n+\n+\t\t\tif (q.quantized() != c.quantized())\n+\t\t\t\treturn TestFail;\n+\t\t}\n+\n+\t\tstd::cout << \"Quantised tests passed successfully.\" << std::endl;\n+\n+\t\treturn TestPass;\n+\t}\n+};\n+\n+TEST_REGISTER(QuantizedTest)\n","prefixes":["2/6"]}