diff options
Diffstat (limited to 'include/libcamera/internal/software_isp')
4 files changed, 184 insertions, 0 deletions
diff --git a/include/libcamera/internal/software_isp/debayer_params.h b/include/libcamera/internal/software_isp/debayer_params.h new file mode 100644 index 00000000..ce1b5945 --- /dev/null +++ b/include/libcamera/internal/software_isp/debayer_params.h @@ -0,0 +1,29 @@ +/* SPDX-License-Identifier: LGPL-2.1-or-later */ +/* + * Copyright (C) 2023, Red Hat Inc. + * + * Authors: + * Hans de Goede <hdegoede@redhat.com> + * + * DebayerParams header + */ + +#pragma once + +namespace libcamera { + +struct DebayerParams { + static constexpr unsigned int kGain10 = 256; + + unsigned int gainR; + unsigned int gainG; + unsigned int gainB; + + float gamma; + /** + * \brief Level of the black point, 0..255, 0 is no correction. + */ + unsigned int blackLevel; +}; + +} /* namespace libcamera */ diff --git a/include/libcamera/internal/software_isp/meson.build b/include/libcamera/internal/software_isp/meson.build new file mode 100644 index 00000000..508ddddc --- /dev/null +++ b/include/libcamera/internal/software_isp/meson.build @@ -0,0 +1,7 @@ +# SPDX-License-Identifier: CC0-1.0 + +libcamera_internal_headers += files([ + 'debayer_params.h', + 'software_isp.h', + 'swisp_stats.h', +]) diff --git a/include/libcamera/internal/software_isp/software_isp.h b/include/libcamera/internal/software_isp/software_isp.h new file mode 100644 index 00000000..7e9fae6a --- /dev/null +++ b/include/libcamera/internal/software_isp/software_isp.h @@ -0,0 +1,99 @@ +/* SPDX-License-Identifier: LGPL-2.1-or-later */ +/* + * Copyright (C) 2023, Linaro Ltd + * + * Simple software ISP implementation + */ + +#pragma once + +#include <functional> +#include <initializer_list> +#include <map> +#include <memory> +#include <string> +#include <tuple> +#include <vector> + +#include <libcamera/base/class.h> +#include <libcamera/base/log.h> +#include <libcamera/base/signal.h> +#include <libcamera/base/thread.h> + +#include <libcamera/geometry.h> +#include <libcamera/pixel_format.h> + +#include <libcamera/ipa/soft_ipa_interface.h> +#include <libcamera/ipa/soft_ipa_proxy.h> + +#include "libcamera/internal/camera_sensor.h" +#include "libcamera/internal/dma_heaps.h" +#include "libcamera/internal/pipeline_handler.h" +#include "libcamera/internal/shared_mem_object.h" +#include "libcamera/internal/software_isp/debayer_params.h" + +namespace libcamera { + +class DebayerCpu; +class FrameBuffer; +class PixelFormat; +struct StreamConfiguration; + +LOG_DECLARE_CATEGORY(SoftwareIsp) + +class SoftwareIsp +{ +public: + SoftwareIsp(PipelineHandler *pipe, const CameraSensor *sensor); + ~SoftwareIsp(); + + int loadConfiguration([[maybe_unused]] const std::string &filename) { return 0; } + + bool isValid() const; + + std::vector<PixelFormat> formats(PixelFormat input); + + SizeRange sizes(PixelFormat inputFormat, const Size &inputSize); + + std::tuple<unsigned int, unsigned int> + strideAndFrameSize(const PixelFormat &outputFormat, const Size &size); + + int configure(const StreamConfiguration &inputCfg, + const std::vector<std::reference_wrapper<StreamConfiguration>> &outputCfgs, + const ControlInfoMap &sensorControls); + + int exportBuffers(unsigned int output, unsigned int count, + std::vector<std::unique_ptr<FrameBuffer>> *buffers); + + void processStats(const ControlList &sensorControls); + + int start(); + void stop(); + + int queueBuffers(FrameBuffer *input, + const std::map<unsigned int, FrameBuffer *> &outputs); + + void process(FrameBuffer *input, FrameBuffer *output); + + Signal<FrameBuffer *> inputBufferReady; + Signal<FrameBuffer *> outputBufferReady; + Signal<> ispStatsReady; + Signal<const ControlList &> setSensorControls; + +private: + void saveIspParams(); + void setSensorCtrls(const ControlList &sensorControls); + void statsReady(); + void inputReady(FrameBuffer *input); + void outputReady(FrameBuffer *output); + + std::unique_ptr<DebayerCpu> debayer_; + Thread ispWorkerThread_; + SharedMemObject<DebayerParams> sharedParams_; + DebayerParams debayerParams_; + DmaHeap dmaHeap_; + + std::unique_ptr<ipa::soft::IPAProxySoft> ipa_; +}; + +} /* namespace libcamera */ diff --git a/include/libcamera/internal/software_isp/swisp_stats.h b/include/libcamera/internal/software_isp/swisp_stats.h new file mode 100644 index 00000000..ae11f112 --- /dev/null +++ b/include/libcamera/internal/software_isp/swisp_stats.h @@ -0,0 +1,49 @@ +/* SPDX-License-Identifier: LGPL-2.1-or-later */ +/* + * Copyright (C) 2023, Linaro Ltd + * + * Statistics data format used by the software ISP and software IPA + */ + +#pragma once + +#include <array> +#include <stdint.h> + +namespace libcamera { + +/** + * \brief Struct that holds the statistics for the Software ISP + * + * The struct value types are large enough to not overflow. + * Should they still overflow for some reason, no check is performed and they + * wrap around. + */ +struct SwIspStats { + /** + * \brief Holds the sum of all sampled red pixels + */ + uint64_t sumR_; + /** + * \brief Holds the sum of all sampled green pixels + */ + uint64_t sumG_; + /** + * \brief Holds the sum of all sampled blue pixels + */ + uint64_t sumB_; + /** + * \brief Number of bins in the yHistogram + */ + static constexpr unsigned int kYHistogramSize = 64; + /** + * \brief Type of the histogram. + */ + using Histogram = std::array<uint32_t, kYHistogramSize>; + /** + * \brief A histogram of luminance values + */ + Histogram yHistogram; +}; + +} /* namespace libcamera */ |