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{ "id": 25909, "url": "https://patchwork.libcamera.org/api/1.1/patches/25909/?format=api", "web_url": "https://patchwork.libcamera.org/patch/25909/", "project": { "id": 1, "url": "https://patchwork.libcamera.org/api/1.1/projects/1/?format=api", "name": "libcamera", "link_name": "libcamera", "list_id": "libcamera_core", "list_email": "libcamera-devel@lists.libcamera.org", "web_url": "", "scm_url": "", "webscm_url": "" }, "msgid": "<20260121173737.376113-3-kieran.bingham@ideasonboard.com>", "date": "2026-01-21T17:37:21", "name": "[v6,02/16] test: libipa: Add tests for Quantized types", "commit_ref": null, "pull_url": null, "state": "superseded", "archived": false, "hash": "80188c01a03527ff96e964a70781422c550e0209", "submitter": { "id": 4, "url": "https://patchwork.libcamera.org/api/1.1/people/4/?format=api", "name": "Kieran Bingham", "email": "kieran.bingham@ideasonboard.com" }, "delegate": null, "mbox": "https://patchwork.libcamera.org/patch/25909/mbox/", "series": [ { "id": 5730, "url": "https://patchwork.libcamera.org/api/1.1/series/5730/?format=api", "web_url": "https://patchwork.libcamera.org/project/libcamera/list/?series=5730", "date": "2026-01-21T17:37:19", "name": "libipa: Introduce a Quantized type", "version": 6, "mbox": "https://patchwork.libcamera.org/series/5730/mbox/" } ], "comments": "https://patchwork.libcamera.org/api/patches/25909/comments/", "check": "pending", "checks": "https://patchwork.libcamera.org/api/patches/25909/checks/", "tags": {}, "headers": { "Return-Path": "<libcamera-devel-bounces@lists.libcamera.org>", "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 01443BDCBF\n\tfor <parsemail@patchwork.libcamera.org>;\n\tWed, 21 Jan 2026 17:37:49 +0000 (UTC)", "from lancelot.ideasonboard.com (localhost [IPv6:::1])\n\tby lancelot.ideasonboard.com (Postfix) with ESMTP id B5FCE61FBF;\n\tWed, 21 Jan 2026 18:37:47 +0100 (CET)", "from perceval.ideasonboard.com (perceval.ideasonboard.com\n\t[IPv6:2001:4b98:dc2:55:216:3eff:fef7:d647])\n\tby lancelot.ideasonboard.com (Postfix) with ESMTPS id 83C4261F9F\n\tfor <libcamera-devel@lists.libcamera.org>;\n\tWed, 21 Jan 2026 18:37:42 +0100 (CET)", "from Monstersaurus.hippo-penny.ts.net\n\t(cpc89244-aztw30-2-0-cust6594.18-1.cable.virginm.net [86.31.185.195])\n\tby perceval.ideasonboard.com (Postfix) with ESMTPSA id 71F9CF52;\n\tWed, 21 Jan 2026 18:37:10 +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=\"Ot6kHoqY\"; dkim-atps=neutral", "DKIM-Signature": "v=1; a=rsa-sha256; c=relaxed/simple; d=ideasonboard.com;\n\ts=mail; t=1769017030;\n\tbh=U7bzLk7p/FlBtj8Or9UQwMszh+M73bEBy581fzdsOp4=;\n\th=From:To:Cc:Subject:Date:In-Reply-To:References:From;\n\tb=Ot6kHoqYT5qGYzu4rcpccsbexd8XhMpNq4bSdrM2JAbsJOywPt4LEixjS/Q/vpjuX\n\to4fTjNX65CNZJtazdGtrn8UP/tM5rfqjSnG/rgGJJxefg85BcQtBEiI8xOdugQe8QR\n\tdCl6gzlrvN6Y7MbeumOwtcceT7IJODmZo+qC/UJU=", "From": "Kieran Bingham <kieran.bingham@ideasonboard.com>", "To": "libcamera devel <libcamera-devel@lists.libcamera.org>", "Cc": "Kieran Bingham <kieran.bingham@ideasonboard.com>,\n\tIsaac Scott <isaac.scott@ideasonboard.com>", "Subject": "[PATCH v6 02/16] test: libipa: Add tests for Quantized types", "Date": "Wed, 21 Jan 2026 17:37:21 +0000", "Message-ID": "<20260121173737.376113-3-kieran.bingham@ideasonboard.com>", "X-Mailer": "git-send-email 2.52.0", "In-Reply-To": "<20260121173737.376113-1-kieran.bingham@ideasonboard.com>", "References": "<20260121173737.376113-1-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": "<libcamera-devel.lists.libcamera.org>", "List-Unsubscribe": "<https://lists.libcamera.org/options/libcamera-devel>,\n\t<mailto:libcamera-devel-request@lists.libcamera.org?subject=unsubscribe>", "List-Archive": "<https://lists.libcamera.org/pipermail/libcamera-devel/>", "List-Post": "<mailto:libcamera-devel@lists.libcamera.org>", "List-Help": "<mailto:libcamera-devel-request@lists.libcamera.org?subject=help>", "List-Subscribe": "<https://lists.libcamera.org/listinfo/libcamera-devel>,\n\t<mailto:libcamera-devel-request@lists.libcamera.org?subject=subscribe>", "Errors-To": "libcamera-devel-bounces@lists.libcamera.org", "Sender": "\"libcamera-devel\" <libcamera-devel-bounces@lists.libcamera.org>" }, "content": "Provide use case tests for the Quantized types to ensure construction\nand usages are consistent and work as expected.\n\nReviewed-by: Isaac Scott <isaac.scott@ideasonboard.com>\nSigned-off-by: Kieran Bingham <kieran.bingham@ideasonboard.com>\n\n---\nv3:\n- Rename quantized_type to QuantizedType\n\nv5:\n- use static asserts for constructible failure tests\n- Remove constexpr from lround users (only possible in C++23)\n- Remove move tests\n- Fix up inequality test\n\nv6:\n- Remove static casts on fromFloat conversions\n- Use int8_t(64) instead of (int8_t)64\n- Add new test from different floats to the same quantized value\n\nSigned-off-by: Kieran Bingham <kieran.bingham@ideasonboard.com>\n---\n test/ipa/libipa/meson.build | 1 +\n test/ipa/libipa/quantized.cpp | 148 ++++++++++++++++++++++++++++++++++\n 2 files changed, 149 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..860d54d2dd18\n--- /dev/null\n+++ b/test/ipa/libipa/quantized.cpp\n@@ -0,0 +1,148 @@\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 <algorithm>\n+#include <cmath>\n+#include <iostream>\n+#include <map>\n+#include <stdint.h>\n+\n+#include \"test.h\"\n+\n+using namespace std;\n+using namespace libcamera;\n+using namespace ipa;\n+\n+struct BrightnessHueTraits {\n+\tusing QuantizedType = int8_t;\n+\tstatic QuantizedType fromFloat(float v)\n+\t{\n+\t\tint quantized = std::lround(v * 128.0f);\n+\t\treturn std::clamp<int>(quantized, -128, 127);\n+\t}\n+\tstatic float toFloat(QuantizedType v)\n+\t{\n+\t\treturn static_cast<float>(v) / 128.0f;\n+\t}\n+};\n+\n+using BrightnessHueQuantizer = Quantized<BrightnessHueTraits>;\n+\n+struct ContrastSaturationTraits {\n+\tusing QuantizedType = uint8_t;\n+\tstatic QuantizedType fromFloat(float v)\n+\t{\n+\t\tint quantized = std::lround(v * 128.0f);\n+\t\treturn std::clamp<int>(quantized, 0, 255);\n+\t}\n+\tstatic float toFloat(QuantizedType v)\n+\t{\n+\t\treturn static_cast<float>(v) / 128.0f;\n+\t}\n+};\n+\n+using ContrastSaturationQuantizer = Quantized<ContrastSaturationTraits>;\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 * Only construction from the exact storage type or a float\n+\t\t * is permitted.\n+\t\t */\n+\t\tstatic_assert(!std::is_constructible_v<BrightnessQ, unsigned int>);\n+\t\tstatic_assert(!std::is_constructible_v<BrightnessQ, uint8_t>);\n+\t\tstatic_assert(!std::is_constructible_v<BrightnessQ, double>);\n+\t\tstatic_assert(!std::is_constructible_v<ContrastQ, int>);\n+\t\tstatic_assert(!std::is_constructible_v<ContrastQ, int8_t>);\n+\t\tstatic_assert(!std::is_constructible_v<ContrastQ, unsigned int>);\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 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/*\n+\t\t * Test construction from different floats mapping to same\n+\t\t * quantized value\n+\t\t */\n+\t\t{\n+\t\t\t/* Two floats that have the same quantized value. */\n+\t\t\tconst float f1 = 1.007f;\n+\t\t\tconst float f2 = 1.008f;\n+\n+\t\t\tContrastQ c1(f1);\n+\t\t\tContrastQ c2(f2);\n+\n+\t\t\t/* Quantized values must match */\n+\t\t\tif (!(c1.quantized() == c2.quantized()))\n+\t\t\t\treturn TestFail;\n+\n+\t\t\t/* Float values must now match */\n+\t\t\tif (!(c1.value() == c2.value()))\n+\t\t\t\treturn TestFail;\n+\n+\t\t\tif (!(c1 == c2))\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": [ "v6", "02/16" ] }