From bf51f39f3bd4177c42faff10a92a2a2a4e007a08 Mon Sep 17 00:00:00 2001 From: Hans de Goede Date: Thu, 11 Dec 2025 23:22:32 +0000 Subject: [PATCH] libcamera: software_isp: Move benchmark code to its own class Move the code for the builtin benchmark to its own small Benchmark class. Reviewed-by: Kieran Bingham Reviewed-by: Milan Zamazal Signed-off-by: Hans de Goede [bod: Fixed up some drift in this patch since initial propostion] Signed-off-by: Bryan O'Donoghue Signed-off-by: Kieran Bingham --- .../internal/software_isp/benchmark.h | 39 ++++++++ .../internal/software_isp/meson.build | 1 + src/libcamera/software_isp/benchmark.cpp | 92 +++++++++++++++++++ src/libcamera/software_isp/debayer_cpu.cpp | 45 +-------- src/libcamera/software_isp/debayer_cpu.h | 6 +- src/libcamera/software_isp/meson.build | 1 + 6 files changed, 138 insertions(+), 46 deletions(-) create mode 100644 include/libcamera/internal/software_isp/benchmark.h create mode 100644 src/libcamera/software_isp/benchmark.cpp diff --git a/include/libcamera/internal/software_isp/benchmark.h b/include/libcamera/internal/software_isp/benchmark.h new file mode 100644 index 00000000..0680d6cd --- /dev/null +++ b/include/libcamera/internal/software_isp/benchmark.h @@ -0,0 +1,39 @@ +/* SPDX-License-Identifier: LGPL-2.1-or-later */ +/* + * Copyright (C) 2024, Red Hat Inc. + * + * Authors: + * Hans de Goede + * + * Simple builtin benchmark to measure software ISP processing times + */ + +#pragma once + +#include +#include +#include +#include "libcamera/internal/global_configuration.h" + +namespace libcamera { + +class Benchmark +{ +public: + Benchmark(const GlobalConfiguration &configuration); + ~Benchmark(); + + void startFrame(void); + void finishFrame(void); + +private: + timespec frameStartTime_; + bool measure; + /* Skip 30 frames for things to stabilize then measure 30 frames */ + unsigned int encounteredFrames_ = 0; + int64_t frameProcessTime_ = 0; + unsigned int skipBeforeMeasure_ = 30; + unsigned int framesToMeasure_ = 30; +}; + +} /* namespace libcamera */ diff --git a/include/libcamera/internal/software_isp/meson.build b/include/libcamera/internal/software_isp/meson.build index ea3f3f1c..df7c3b97 100644 --- a/include/libcamera/internal/software_isp/meson.build +++ b/include/libcamera/internal/software_isp/meson.build @@ -1,6 +1,7 @@ # SPDX-License-Identifier: CC0-1.0 libcamera_internal_headers += files([ + 'benchmark.h', 'debayer_params.h', 'software_isp.h', 'swisp_stats.h', diff --git a/src/libcamera/software_isp/benchmark.cpp b/src/libcamera/software_isp/benchmark.cpp new file mode 100644 index 00000000..1a00ae56 --- /dev/null +++ b/src/libcamera/software_isp/benchmark.cpp @@ -0,0 +1,92 @@ +/* SPDX-License-Identifier: LGPL-2.1-or-later */ +/* + * Copyright (C) 2024, Red Hat Inc. + * + * Authors: + * Hans de Goede + * + * Simple builtin benchmark to measure software ISP processing times + */ + +#include "libcamera/internal/software_isp/benchmark.h" + +#include + +namespace libcamera { + +LOG_DEFINE_CATEGORY(Benchmark) + +/** + * \class Benchmark + * \brief Simple builtin benchmark + * + * Simple builtin benchmark to measure software ISP processing times. + */ + +/** + * \brief Constructs a Benchmark object + */ +Benchmark::Benchmark(const GlobalConfiguration &configuration) +{ + skipBeforeMeasure_ = configuration.option( + { "software_isp", "measure", "skip" }) + .value_or(skipBeforeMeasure_); + framesToMeasure_ = configuration.option( + { "software_isp", "measure", "number" }) + .value_or(framesToMeasure_); +} + +Benchmark::~Benchmark() +{ +} + +static inline int64_t timeDiff(timespec &after, timespec &before) +{ + return (after.tv_sec - before.tv_sec) * 1000000000LL + + (int64_t)after.tv_nsec - (int64_t)before.tv_nsec; +} + +/** + * \brief Start measuring process time for a single frame + * + * Call this function before processing frame data to start measuring + * the process time for a frame. + */ +void Benchmark::startFrame(void) +{ + measure = framesToMeasure_ > 0 && + encounteredFrames_ < skipBeforeMeasure_ + framesToMeasure_ && + ++encounteredFrames_ > skipBeforeMeasure_; + + if (measure) { + frameStartTime_ = {}; + clock_gettime(CLOCK_MONOTONIC_RAW, &frameStartTime_); + } +} + +/** + * \brief Finish measuring process time for a single frame + * + * Call this function after processing frame data to finish measuring + * the process time for a frame. + * + * This function will log frame processing time information after + * Benchmark::kLastFrameToMeasure frames have been processed. + */ +void Benchmark::finishFrame(void) +{ + if (measure) { + timespec frameEndTime = {}; + clock_gettime(CLOCK_MONOTONIC_RAW, &frameEndTime); + frameProcessTime_ += timeDiff(frameEndTime, frameStartTime_); + if (encounteredFrames_ == skipBeforeMeasure_ + framesToMeasure_) { + LOG(Benchmark, Info) + << "Processed " << framesToMeasure_ + << " frames in " << frameProcessTime_ / 1000 << "us, " + << frameProcessTime_ / (1000 * framesToMeasure_) + << " us/frame"; + } + } +} + +} /* namespace libcamera */ diff --git a/src/libcamera/software_isp/debayer_cpu.cpp b/src/libcamera/software_isp/debayer_cpu.cpp index 67a303c6..b92c6a90 100644 --- a/src/libcamera/software_isp/debayer_cpu.cpp +++ b/src/libcamera/software_isp/debayer_cpu.cpp @@ -42,7 +42,7 @@ namespace libcamera { * \param[in] configuration The global configuration */ DebayerCpu::DebayerCpu(std::unique_ptr stats, const GlobalConfiguration &configuration) - : stats_(std::move(stats)) + : stats_(std::move(stats)), bench_(configuration) { /* * Reading from uncached buffers may be very slow. @@ -58,13 +58,6 @@ DebayerCpu::DebayerCpu(std::unique_ptr stats, const GlobalConfigurat enableInputMemcpy_ = configuration.option({ "software_isp", "copy_input_buffer" }).value_or(true); - skipBeforeMeasure_ = configuration.option( - { "software_isp", "measure", "skip" }) - .value_or(skipBeforeMeasure_); - framesToMeasure_ = configuration.option( - { "software_isp", "measure", "number" }) - .value_or(framesToMeasure_); - /* Initialize color lookup tables */ for (unsigned int i = 0; i < DebayerParams::kRGBLookupSize; i++) { red_[i] = green_[i] = blue_[i] = i; @@ -571,9 +564,6 @@ int DebayerCpu::configure(const StreamConfiguration &inputCfg, lineBuffers_[i].resize(lineBufferLength_); } - encounteredFrames_ = 0; - frameProcessTime_ = 0; - return 0; } @@ -765,27 +755,9 @@ void DebayerCpu::process4(uint32_t frame, const uint8_t *src, uint8_t *dst) } } -namespace { - -inline int64_t timeDiff(timespec &after, timespec &before) -{ - return (after.tv_sec - before.tv_sec) * 1000000000LL + - (int64_t)after.tv_nsec - (int64_t)before.tv_nsec; -} - -} /* namespace */ - void DebayerCpu::process(uint32_t frame, FrameBuffer *input, FrameBuffer *output, DebayerParams params) { - timespec frameStartTime; - - bool measure = framesToMeasure_ > 0 && - encounteredFrames_ < skipBeforeMeasure_ + framesToMeasure_ && - ++encounteredFrames_ > skipBeforeMeasure_; - if (measure) { - frameStartTime = {}; - clock_gettime(CLOCK_MONOTONIC_RAW, &frameStartTime); - } + bench_.startFrame(); std::vector dmaSyncers; for (const FrameBuffer::Plane &plane : input->planes()) @@ -840,18 +812,7 @@ void DebayerCpu::process(uint32_t frame, FrameBuffer *input, FrameBuffer *output dmaSyncers.clear(); /* Measure before emitting signals */ - if (measure) { - timespec frameEndTime = {}; - clock_gettime(CLOCK_MONOTONIC_RAW, &frameEndTime); - frameProcessTime_ += timeDiff(frameEndTime, frameStartTime); - if (encounteredFrames_ == skipBeforeMeasure_ + framesToMeasure_) { - LOG(Debayer, Info) - << "Processed " << framesToMeasure_ - << " frames in " << frameProcessTime_ / 1000 << "us, " - << frameProcessTime_ / (1000 * framesToMeasure_) - << " us/frame"; - } - } + bench_.finishFrame(); /* * Buffer ids are currently not used, so pass zeros as its parameter. diff --git a/src/libcamera/software_isp/debayer_cpu.h b/src/libcamera/software_isp/debayer_cpu.h index 1cd411f2..868fd5a9 100644 --- a/src/libcamera/software_isp/debayer_cpu.h +++ b/src/libcamera/software_isp/debayer_cpu.h @@ -19,6 +19,7 @@ #include "libcamera/internal/bayer_format.h" #include "libcamera/internal/global_configuration.h" +#include "libcamera/internal/software_isp/benchmark.h" #include "libcamera/internal/software_isp/swstats_cpu.h" #include "debayer.h" @@ -161,10 +162,7 @@ private: unsigned int xShift_; /* Offset of 0/1 applied to window_.x */ bool enableInputMemcpy_; bool swapRedBlueGains_; - unsigned int encounteredFrames_; - int64_t frameProcessTime_; - unsigned int skipBeforeMeasure_ = 30; - unsigned int framesToMeasure_ = 30; + Benchmark bench_; }; } /* namespace libcamera */ diff --git a/src/libcamera/software_isp/meson.build b/src/libcamera/software_isp/meson.build index aac7eda7..59fa5f02 100644 --- a/src/libcamera/software_isp/meson.build +++ b/src/libcamera/software_isp/meson.build @@ -8,6 +8,7 @@ if not softisp_enabled endif libcamera_internal_sources += files([ + 'benchmark.cpp', 'debayer.cpp', 'debayer_cpu.cpp', 'software_isp.cpp',