libcamera/vivid.git - libcamera pipeline handler for VIVID

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author	David Plowman <david.plowman@raspberrypi.com>	2020-11-23 07:38:03 +0000
committer	Kieran Bingham <kieran.bingham@ideasonboard.com>	2020-11-23 14:24:45 +0000
commit	7de5506c30b36575de7bbead7fda243ec1019005 (patch)
tree	58886fe65956fb26ae80f6ecbd21a53dba43c62e /test/object-invoke.cpp
parent	393f05a9a8044dba26251ba5a4b0827b714cd15f (diff)

libcamera: src: ipa: raspberrypi: agc: Improve gain update calculation for partly saturated images

When parts of an image saturate then the image brightness no longer increases linearly with increased exposure/gain. Having calculated a linear gain value it's better then to try it, allowing for saturating regions, and if necessary increase the gain some more. We repeat this several times. Signed-off-by: David Plowman <david.plowman@raspberrypi.com> Reviewed-by: Naushir Patuck <naush@raspberrypi.com> Acked-by: Kieran Bingham <kieran.bingham@ideasonboard.com> Signed-off-by: Kieran Bingham <kieran.bingham@ideasonboard.com>

Diffstat (limited to 'test/object-invoke.cpp')

0 files changed, 0 insertions, 0 deletions

License-Identifier: LGPL-2.1-or-later */ /* * Copyright (C) 2019, Google Inc. * * v4l2_camera_proxy.h - Proxy to V4L2 compatibility camera */ #pragma once #include <linux/videodev2.h> #include <map> #include <memory> #include <set> #include <sys/types.h> #include <vector> #include <libcamera/base/mutex.h> #include <libcamera/camera.h> #include "v4l2_camera.h" class V4L2CameraFile; class V4L2CameraProxy { public: V4L2CameraProxy(unsigned int index, std::shared_ptr<libcamera::Camera> camera); int open(V4L2CameraFile *file) LIBCAMERA_TSA_EXCLUDES(proxyMutex_); void close(V4L2CameraFile *file) LIBCAMERA_TSA_EXCLUDES(proxyMutex_); void *mmap(V4L2CameraFile *file, void *addr, size_t length, int prot, int flags, off64_t offset) LIBCAMERA_TSA_EXCLUDES(proxyMutex_); int munmap(V4L2CameraFile *file, void *addr, size_t length) LIBCAMERA_TSA_EXCLUDES(proxyMutex_); int ioctl(V4L2CameraFile *file, unsigned long request, void *arg) LIBCAMERA_TSA_EXCLUDES(proxyMutex_); private: bool validateBufferType(uint32_t type); bool validateMemoryType(uint32_t memory); void setFmtFromConfig(const libcamera::StreamConfiguration &streamConfig); void querycap(std::shared_ptr<libcamera::Camera> camera); int tryFormat(struct v4l2_format *arg); enum v4l2_priority maxPriority(); void updateBuffers(); void freeBuffers(); int vidioc_querycap(V4L2CameraFile *file, struct v4l2_capability *arg); int vidioc_enum_framesizes(V4L2CameraFile *file, struct v4l2_frmsizeenum *arg); int vidioc_enum_fmt(V4L2CameraFile *file, struct v4l2_fmtdesc *arg); int vidioc_g_fmt(V4L2CameraFile *file, struct v4l2_format *arg); int vidioc_s_fmt(V4L2CameraFile *file, struct v4l2_format *arg); int vidioc_try_fmt(V4L2CameraFile *file, struct v4l2_format *arg); int vidioc_g_priority(V4L2CameraFile *file, enum v4l2_priority *arg); int vidioc_s_priority(V4L2CameraFile *file, enum v4l2_priority *arg); int vidioc_enuminput(V4L2CameraFile *file, struct v4l2_input *arg); int vidioc_g_input(V4L2CameraFile *file, int *arg); int vidioc_s_input(V4L2CameraFile *file, int *arg); int vidioc_reqbufs(V4L2CameraFile *file, struct v4l2_requestbuffers *arg); int vidioc_querybuf(V4L2CameraFile *file, struct v4l2_buffer *arg); int vidioc_prepare_buf(V4L2CameraFile *file, struct v4l2_buffer *arg); int vidioc_qbuf(V4L2CameraFile *file, struct v4l2_buffer *arg); int vidioc_dqbuf(V4L2CameraFile *file, struct v4l2_buffer *arg, libcamera::Mutex *lock) LIBCAMERA_TSA_REQUIRES(*lock); int vidioc_expbuf(V4L2CameraFile *file, struct v4l2_exportbuffer *arg); int vidioc_streamon(V4L2CameraFile *file, int *arg); int vidioc_streamoff(V4L2CameraFile *file, int *arg); bool hasOwnership(V4L2CameraFile *file); int acquire(V4L2CameraFile *file); void release(V4L2CameraFile *file); static const std::set<unsigned long> supportedIoctls_; unsigned int refcount_; unsigned int index_; libcamera::StreamConfiguration streamConfig_; unsigned int bufferCount_; unsigned int currentBuf_; unsigned int sizeimage_; struct v4l2_capability capabilities_; struct v4l2_pix_format v4l2PixFormat_; std::vector<struct v4l2_buffer> buffers_; std::map<void *, unsigned int> mmaps_; std::set<V4L2CameraFile *> files_; std::unique_ptr<V4L2Camera> vcam_; /* * This is the exclusive owner of this V4L2CameraProxy instance. * When there is no owner, anybody can call any ioctl before reqbufs. * The first file to call reqbufs with count > 0 or s_fmt will become * the owner, and when the owner calls reqbufs with count = 0 it will * release ownership. Any buffer-related ioctl (except querybuf) or * s_fmt that is called by a non-owner while there exists an owner * will return -EBUSY. */ V4L2CameraFile *owner_; /* This mutex is to serialize access to the proxy. */ libcamera::Mutex proxyMutex_; };