{"id":25221,"url":"https://patchwork.libcamera.org/api/patches/25221/?format=json","web_url":"https://patchwork.libcamera.org/patch/25221/","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":"<20251127022256.178929-8-bryan.odonoghue@linaro.org>","date":"2025-11-27T02:22:39","name":"[v2,07/22] libcamera: software_isp: Move benchmark code to its own class","commit_ref":null,"pull_url":null,"state":"superseded","archived":false,"hash":"e649df0ecaf565f7fcee3de762f7979ab1801975","submitter":{"id":175,"url":"https://patchwork.libcamera.org/api/people/175/?format=json","name":"Bryan O'Donoghue","email":"bryan.odonoghue@linaro.org"},"delegate":null,"mbox":"https://patchwork.libcamera.org/patch/25221/mbox/","series":[{"id":5616,"url":"https://patchwork.libcamera.org/api/series/5616/?format=json","web_url":"https://patchwork.libcamera.org/project/libcamera/list/?series=5616","date":"2025-11-27T02:22:32","name":"GPUISP precursor series","version":2,"mbox":"https://patchwork.libcamera.org/series/5616/mbox/"}],"comments":"https://patchwork.libcamera.org/api/patches/25221/comments/","check":"pending","checks":"https://patchwork.libcamera.org/api/patches/25221/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 1B27BC3260\n\tfor ;\n\tThu, 27 Nov 2025 02:23:23 +0000 (UTC)","from lancelot.ideasonboard.com (localhost [IPv6:::1])\n\tby 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2002:a05:600c:474a:b0:477:b0b9:3137 with SMTP id\n\t5b1f17b1804b1-477c10c8886mr221386165e9.1.1764210198591; \n\tWed, 26 Nov 2025 18:23:18 -0800 (PST)","From":"Bryan O'Donoghue ","To":"libcamera-devel@lists.libcamera.org","Cc":"pavel@ucw.cz, Hans de Goede ,\n\tKieran Bingham ,\n\tMilan Zamazal ,\n\tBryan O'Donoghue ","Subject":"[PATCH v2 07/22] libcamera: software_isp: Move benchmark code to its\n\town class","Date":"Thu, 27 Nov 2025 02:22:39 +0000","Message-ID":"<20251127022256.178929-8-bryan.odonoghue@linaro.org>","X-Mailer":"git-send-email 2.51.2","In-Reply-To":"<20251127022256.178929-1-bryan.odonoghue@linaro.org>","References":"<20251127022256.178929-1-bryan.odonoghue@linaro.org>","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":"From: Hans de Goede \n\nMove the code for the builtin benchmark to its own small\nBenchmark class.\n\nReviewed-by: Kieran Bingham \nReviewed-by: Milan Zamazal \nSigned-off-by: Hans de Goede \n[bod: Fixed up some drift in this patch since initial propostion]\nSigned-off-by: Bryan O'Donoghue \n---\n .../internal/software_isp/benchmark.h | 39 ++++++++\n .../internal/software_isp/meson.build | 1 +\n src/libcamera/software_isp/benchmark.cpp | 92 +++++++++++++++++++\n src/libcamera/software_isp/debayer_cpu.cpp | 45 +--------\n src/libcamera/software_isp/debayer_cpu.h | 6 +-\n src/libcamera/software_isp/meson.build | 1 +\n 6 files changed, 138 insertions(+), 46 deletions(-)\n create mode 100644 include/libcamera/internal/software_isp/benchmark.h\n create mode 100644 src/libcamera/software_isp/benchmark.cpp","diff":"diff --git a/include/libcamera/internal/software_isp/benchmark.h b/include/libcamera/internal/software_isp/benchmark.h\nnew file mode 100644\nindex 000000000..0680d6cd9\n--- /dev/null\n+++ b/include/libcamera/internal/software_isp/benchmark.h\n@@ -0,0 +1,39 @@\n+/* SPDX-License-Identifier: LGPL-2.1-or-later */\n+/*\n+ * Copyright (C) 2024, Red Hat Inc.\n+ *\n+ * Authors:\n+ * Hans de Goede \n+ *\n+ * Simple builtin benchmark to measure software ISP processing times\n+ */\n+\n+#pragma once\n+\n+#include \n+#include \n+#include \n+#include \"libcamera/internal/global_configuration.h\"\n+\n+namespace libcamera {\n+\n+class Benchmark\n+{\n+public:\n+\tBenchmark(const GlobalConfiguration &configuration);\n+\t~Benchmark();\n+\n+\tvoid startFrame(void);\n+\tvoid finishFrame(void);\n+\n+private:\n+\ttimespec frameStartTime_;\n+\tbool measure;\n+\t/* Skip 30 frames for things to stabilize then measure 30 frames */\n+\tunsigned int encounteredFrames_ = 0;\n+\tint64_t frameProcessTime_ = 0;\n+\tunsigned int skipBeforeMeasure_ = 30;\n+\tunsigned int framesToMeasure_ = 30;\n+};\n+\n+} /* namespace libcamera */\ndiff --git a/include/libcamera/internal/software_isp/meson.build b/include/libcamera/internal/software_isp/meson.build\nindex ea3f3f1c1..df7c3b97d 100644\n--- a/include/libcamera/internal/software_isp/meson.build\n+++ b/include/libcamera/internal/software_isp/meson.build\n@@ -1,6 +1,7 @@\n # SPDX-License-Identifier: CC0-1.0\n \n libcamera_internal_headers += files([\n+ 'benchmark.h',\n 'debayer_params.h',\n 'software_isp.h',\n 'swisp_stats.h',\ndiff --git a/src/libcamera/software_isp/benchmark.cpp b/src/libcamera/software_isp/benchmark.cpp\nnew file mode 100644\nindex 000000000..1a00ae569\n--- /dev/null\n+++ b/src/libcamera/software_isp/benchmark.cpp\n@@ -0,0 +1,92 @@\n+/* SPDX-License-Identifier: LGPL-2.1-or-later */\n+/*\n+ * Copyright (C) 2024, Red Hat Inc.\n+ *\n+ * Authors:\n+ * Hans de Goede \n+ *\n+ * Simple builtin benchmark to measure software ISP processing times\n+ */\n+\n+#include \"libcamera/internal/software_isp/benchmark.h\"\n+\n+#include \n+\n+namespace libcamera {\n+\n+LOG_DEFINE_CATEGORY(Benchmark)\n+\n+/**\n+ * \\class Benchmark\n+ * \\brief Simple builtin benchmark\n+ *\n+ * Simple builtin benchmark to measure software ISP processing times.\n+ */\n+\n+/**\n+ * \\brief Constructs a Benchmark object\n+ */\n+Benchmark::Benchmark(const GlobalConfiguration &configuration)\n+{\n+\tskipBeforeMeasure_ = configuration.option(\n+\t\t\t\t\t\t{ \"software_isp\", \"measure\", \"skip\" })\n+\t\t\t\t\t\t\t.value_or(skipBeforeMeasure_);\n+\tframesToMeasure_ = configuration.option(\n+\t\t\t\t\t\t{ \"software_isp\", \"measure\", \"number\" })\n+\t\t\t\t\t\t\t.value_or(framesToMeasure_);\n+}\n+\n+Benchmark::~Benchmark()\n+{\n+}\n+\n+static inline int64_t timeDiff(timespec &after, timespec &before)\n+{\n+\treturn (after.tv_sec - before.tv_sec) * 1000000000LL +\n+\t (int64_t)after.tv_nsec - (int64_t)before.tv_nsec;\n+}\n+\n+/**\n+ * \\brief Start measuring process time for a single frame\n+ *\n+ * Call this function before processing frame data to start measuring\n+ * the process time for a frame.\n+ */\n+void Benchmark::startFrame(void)\n+{\n+\tmeasure = framesToMeasure_ > 0 &&\n+\t\t encounteredFrames_ < skipBeforeMeasure_ + framesToMeasure_ &&\n+\t\t ++encounteredFrames_ > skipBeforeMeasure_;\n+\n+\tif (measure) {\n+\t\tframeStartTime_ = {};\n+\t\tclock_gettime(CLOCK_MONOTONIC_RAW, &frameStartTime_);\n+\t}\n+}\n+\n+/**\n+ * \\brief Finish measuring process time for a single frame\n+ *\n+ * Call this function after processing frame data to finish measuring\n+ * the process time for a frame.\n+ *\n+ * This function will log frame processing time information after\n+ * Benchmark::kLastFrameToMeasure frames have been processed.\n+ */\n+void Benchmark::finishFrame(void)\n+{\n+\tif (measure) {\n+\t\ttimespec frameEndTime = {};\n+\t\tclock_gettime(CLOCK_MONOTONIC_RAW, &frameEndTime);\n+\t\tframeProcessTime_ += timeDiff(frameEndTime, frameStartTime_);\n+\t\tif (encounteredFrames_ == skipBeforeMeasure_ + framesToMeasure_) {\n+\t\t\tLOG(Benchmark, Info)\n+\t\t\t\t<< \"Processed \" << framesToMeasure_\n+\t\t\t\t<< \" frames in \" << frameProcessTime_ / 1000 << \"us, \"\n+\t\t\t\t<< frameProcessTime_ / (1000 * framesToMeasure_)\n+\t\t\t\t<< \" us/frame\";\n+\t\t}\n+\t}\n+}\n+\n+} /* namespace libcamera */\ndiff --git a/src/libcamera/software_isp/debayer_cpu.cpp b/src/libcamera/software_isp/debayer_cpu.cpp\nindex 67a303c65..b92c6a904 100644\n--- a/src/libcamera/software_isp/debayer_cpu.cpp\n+++ b/src/libcamera/software_isp/debayer_cpu.cpp\n@@ -42,7 +42,7 @@ namespace libcamera {\n * \\param[in] configuration The global configuration\n */\n DebayerCpu::DebayerCpu(std::unique_ptr stats, const GlobalConfiguration &configuration)\n-\t: stats_(std::move(stats))\n+\t: stats_(std::move(stats)), bench_(configuration)\n {\n \t/*\n \t * Reading from uncached buffers may be very slow.\n@@ -58,13 +58,6 @@ DebayerCpu::DebayerCpu(std::unique_ptr stats, const GlobalConfigurat\n \tenableInputMemcpy_ =\n \t\tconfiguration.option({ \"software_isp\", \"copy_input_buffer\" }).value_or(true);\n \n-\tskipBeforeMeasure_ = configuration.option(\n-\t\t\t\t\t\t { \"software_isp\", \"measure\", \"skip\" })\n-\t\t\t\t .value_or(skipBeforeMeasure_);\n-\tframesToMeasure_ = configuration.option(\n-\t\t\t\t\t\t{ \"software_isp\", \"measure\", \"number\" })\n-\t\t\t\t .value_or(framesToMeasure_);\n-\n \t/* Initialize color lookup tables */\n \tfor (unsigned int i = 0; i < DebayerParams::kRGBLookupSize; i++) {\n \t\tred_[i] = green_[i] = blue_[i] = i;\n@@ -571,9 +564,6 @@ int DebayerCpu::configure(const StreamConfiguration &inputCfg,\n \t\t\tlineBuffers_[i].resize(lineBufferLength_);\n \t}\n \n-\tencounteredFrames_ = 0;\n-\tframeProcessTime_ = 0;\n-\n \treturn 0;\n }\n \n@@ -765,27 +755,9 @@ void DebayerCpu::process4(uint32_t frame, const uint8_t *src, uint8_t *dst)\n \t}\n }\n \n-namespace {\n-\n-inline int64_t timeDiff(timespec &after, timespec &before)\n-{\n-\treturn (after.tv_sec - before.tv_sec) * 1000000000LL +\n-\t (int64_t)after.tv_nsec - (int64_t)before.tv_nsec;\n-}\n-\n-} /* namespace */\n-\n void DebayerCpu::process(uint32_t frame, FrameBuffer *input, FrameBuffer *output, DebayerParams params)\n {\n-\ttimespec frameStartTime;\n-\n-\tbool measure = framesToMeasure_ > 0 &&\n-\t\t encounteredFrames_ < skipBeforeMeasure_ + framesToMeasure_ &&\n-\t\t ++encounteredFrames_ > skipBeforeMeasure_;\n-\tif (measure) {\n-\t\tframeStartTime = {};\n-\t\tclock_gettime(CLOCK_MONOTONIC_RAW, &frameStartTime);\n-\t}\n+\tbench_.startFrame();\n \n \tstd::vector dmaSyncers;\n \tfor (const FrameBuffer::Plane &plane : input->planes())\n@@ -840,18 +812,7 @@ void DebayerCpu::process(uint32_t frame, FrameBuffer *input, FrameBuffer *output\n \tdmaSyncers.clear();\n \n \t/* Measure before emitting signals */\n-\tif (measure) {\n-\t\ttimespec frameEndTime = {};\n-\t\tclock_gettime(CLOCK_MONOTONIC_RAW, &frameEndTime);\n-\t\tframeProcessTime_ += timeDiff(frameEndTime, frameStartTime);\n-\t\tif (encounteredFrames_ == skipBeforeMeasure_ + framesToMeasure_) {\n-\t\t\tLOG(Debayer, Info)\n-\t\t\t\t<< \"Processed \" << framesToMeasure_\n-\t\t\t\t<< \" frames in \" << frameProcessTime_ / 1000 << \"us, \"\n-\t\t\t\t<< frameProcessTime_ / (1000 * framesToMeasure_)\n-\t\t\t\t<< \" us/frame\";\n-\t\t}\n-\t}\n+\tbench_.finishFrame();\n \n \t/*\n \t * Buffer ids are currently not used, so pass zeros as its parameter.\ndiff --git a/src/libcamera/software_isp/debayer_cpu.h b/src/libcamera/software_isp/debayer_cpu.h\nindex 1cd411f26..aff32491e 100644\n--- a/src/libcamera/software_isp/debayer_cpu.h\n+++ b/src/libcamera/software_isp/debayer_cpu.h\n@@ -17,6 +17,7 @@\n \n #include \n \n+#include \"libcamera/internal/software_isp/benchmark.h\"\n #include \"libcamera/internal/bayer_format.h\"\n #include \"libcamera/internal/global_configuration.h\"\n #include \"libcamera/internal/software_isp/swstats_cpu.h\"\n@@ -161,10 +162,7 @@ private:\n \tunsigned int xShift_; /* Offset of 0/1 applied to window_.x */\n \tbool enableInputMemcpy_;\n \tbool swapRedBlueGains_;\n-\tunsigned int encounteredFrames_;\n-\tint64_t frameProcessTime_;\n-\tunsigned int skipBeforeMeasure_ = 30;\n-\tunsigned int framesToMeasure_ = 30;\n+\tBenchmark bench_;\n };\n \n } /* namespace libcamera */\ndiff --git a/src/libcamera/software_isp/meson.build b/src/libcamera/software_isp/meson.build\nindex aac7eda7b..59fa5f02a 100644\n--- a/src/libcamera/software_isp/meson.build\n+++ b/src/libcamera/software_isp/meson.build\n@@ -8,6 +8,7 @@ if not softisp_enabled\n endif\n \n libcamera_internal_sources += files([\n+ 'benchmark.cpp',\n 'debayer.cpp',\n 'debayer_cpu.cpp',\n 'software_isp.cpp',\n","prefixes":["v2","07/22"]}