From 0a7000cc96ad26e01efc4b204d90ce3a9734ea06 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Niklas=20S=C3=B6derlund?= Date: Tue, 3 Nov 2020 01:09:24 +0100 Subject: libcamera: ipa: ipu3: Add an IPA skeleton for the IPU3 pipeline MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Add an empty IPA skeleton for the IPU3 pipeline. The skeleton IPA handles the flow of parameter and statistic buffers but does not read or write anything in the buffers. It also allows the IPA to set sensor controls but does not implement any logic to set optimal values and instead sets the V4L2 exposure and gain controls to max and keeps them at that setting. This IPA is meant as a base to allow the pipeline handler to be wired up to an IPA. The image algorithms can then later be added to the IPA independently from also having to add plumbing to the pipeline handler. Signed-off-by: Niklas Söderlund Reviewed-by: Laurent Pinchart --- src/ipa/ipu3/ipu3.cpp | 242 ++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 242 insertions(+) create mode 100644 src/ipa/ipu3/ipu3.cpp (limited to 'src/ipa/ipu3/ipu3.cpp') diff --git a/src/ipa/ipu3/ipu3.cpp b/src/ipa/ipu3/ipu3.cpp new file mode 100644 index 00000000..b11b03ef --- /dev/null +++ b/src/ipa/ipu3/ipu3.cpp @@ -0,0 +1,242 @@ +/* SPDX-License-Identifier: LGPL-2.1-or-later */ +/* + * Copyright (C) 2020, Google Inc. + * + * ipu3.cpp - IPU3 Image Processing Algorithms + */ + +#include + +#include +#include + +#include +#include + +#include +#include +#include +#include +#include + +#include + +#include "libcamera/internal/buffer.h" +#include "libcamera/internal/log.h" + +namespace libcamera { + +LOG_DEFINE_CATEGORY(IPAIPU3) + +class IPAIPU3 : public IPAInterface +{ +public: + int init([[maybe_unused]] const IPASettings &settings) override + { + return 0; + } + int start([[maybe_unused]] const IPAOperationData &data, + [[maybe_unused]] IPAOperationData *result) override { return 0; } + void stop() override {} + + void configure(const CameraSensorInfo &info, + const std::map &streamConfig, + const std::map &entityControls, + const IPAOperationData &ipaConfig, + IPAOperationData *response) override; + void mapBuffers(const std::vector &buffers) override; + void unmapBuffers(const std::vector &ids) override; + void processEvent(const IPAOperationData &event) override; + +private: + void processControls(unsigned int frame, const ControlList &controls); + void fillParams(unsigned int frame, ipu3_uapi_params *params); + void parseStatistics(unsigned int frame, + const ipu3_uapi_stats_3a *stats); + + void setControls(unsigned int frame); + + std::map buffers_; + + ControlInfoMap ctrls_; + + /* Camera sensor controls. */ + uint32_t exposure_; + uint32_t minExposure_; + uint32_t maxExposure_; + uint32_t gain_; + uint32_t minGain_; + uint32_t maxGain_; +}; + +void IPAIPU3::configure([[maybe_unused]] const CameraSensorInfo &info, + [[maybe_unused]] const std::map &streamConfig, + const std::map &entityControls, + [[maybe_unused]] const IPAOperationData &ipaConfig, + [[maybe_unused]] IPAOperationData *result) +{ + if (entityControls.empty()) + return; + + ctrls_ = entityControls.at(0); + + const auto itExp = ctrls_.find(V4L2_CID_EXPOSURE); + if (itExp == ctrls_.end()) { + LOG(IPAIPU3, Error) << "Can't find exposure control"; + return; + } + + const auto itGain = ctrls_.find(V4L2_CID_ANALOGUE_GAIN); + if (itGain == ctrls_.end()) { + LOG(IPAIPU3, Error) << "Can't find gain control"; + return; + } + + minExposure_ = std::max(itExp->second.min().get(), 1); + maxExposure_ = itExp->second.max().get(); + exposure_ = maxExposure_; + + minGain_ = std::max(itGain->second.min().get(), 1); + maxGain_ = itGain->second.max().get(); + gain_ = maxGain_; + + setControls(0); +} + +void IPAIPU3::mapBuffers(const std::vector &buffers) +{ + for (const IPABuffer &buffer : buffers) { + const FrameBuffer fb(buffer.planes); + buffers_.emplace(buffer.id, + MappedFrameBuffer(&fb, PROT_READ | PROT_WRITE)); + } +} + +void IPAIPU3::unmapBuffers(const std::vector &ids) +{ + for (unsigned int id : ids) { + auto it = buffers_.find(id); + if (it == buffers_.end()) + continue; + + buffers_.erase(it); + } +} + +void IPAIPU3::processEvent(const IPAOperationData &event) +{ + switch (event.operation) { + case IPU3_IPA_EVENT_PROCESS_CONTROLS: { + unsigned int frame = event.data[0]; + processControls(frame, event.controls[0]); + break; + } + case IPU3_IPA_EVENT_STAT_READY: { + unsigned int frame = event.data[0]; + unsigned int bufferId = event.data[1]; + + auto it = buffers_.find(bufferId); + if (it == buffers_.end()) { + LOG(IPAIPU3, Error) << "Could not find stats buffer!"; + return; + } + + Span mem = it->second.maps()[0]; + const ipu3_uapi_stats_3a *stats = + reinterpret_cast(mem.data()); + + parseStatistics(frame, stats); + break; + } + case IPU3_IPA_EVENT_FILL_PARAMS: { + unsigned int frame = event.data[0]; + unsigned int bufferId = event.data[1]; + + auto it = buffers_.find(bufferId); + if (it == buffers_.end()) { + LOG(IPAIPU3, Error) << "Could not find param buffer!"; + return; + } + + Span mem = it->second.maps()[0]; + ipu3_uapi_params *params = + reinterpret_cast(mem.data()); + + fillParams(frame, params); + break; + } + default: + LOG(IPAIPU3, Error) << "Unknown event " << event.operation; + break; + } +} + +void IPAIPU3::processControls([[maybe_unused]] unsigned int frame, + [[maybe_unused]] const ControlList &controls) +{ + /* \todo Start processing for 'frame' based on 'controls'. */ +} + +void IPAIPU3::fillParams(unsigned int frame, ipu3_uapi_params *params) +{ + /* Prepare parameters buffer. */ + memset(params, 0, sizeof(*params)); + + /* \todo Fill in parameters buffer. */ + + IPAOperationData op; + op.operation = IPU3_IPA_ACTION_PARAM_FILLED; + + queueFrameAction.emit(frame, op); + + /* \todo Calculate new values for exposure_ and gain_. */ + setControls(frame); +} + +void IPAIPU3::parseStatistics(unsigned int frame, + [[maybe_unused]] const ipu3_uapi_stats_3a *stats) +{ + ControlList ctrls(controls::controls); + + /* \todo React to statistics and update internal state machine. */ + /* \todo Add meta-data information to ctrls. */ + + IPAOperationData op; + op.operation = IPU3_IPA_ACTION_METADATA_READY; + op.controls.push_back(ctrls); + + queueFrameAction.emit(frame, op); +} + +void IPAIPU3::setControls(unsigned int frame) +{ + IPAOperationData op; + op.operation = IPU3_IPA_ACTION_SET_SENSOR_CONTROLS; + + ControlList ctrls(ctrls_); + ctrls.set(V4L2_CID_EXPOSURE, static_cast(exposure_)); + ctrls.set(V4L2_CID_ANALOGUE_GAIN, static_cast(gain_)); + op.controls.push_back(ctrls); + + queueFrameAction.emit(frame, op); +} + +/* + * External IPA module interface + */ + +extern "C" { +const struct IPAModuleInfo ipaModuleInfo = { + IPA_MODULE_API_VERSION, + 1, + "PipelineHandlerIPU3", + "ipu3", +}; + +struct ipa_context *ipaCreate() +{ + return new IPAInterfaceWrapper(std::make_unique()); +} +} + +} /* namespace libcamera */ -- cgit v1.2.1