33d3c4e204
Applications often have to map requests queued to a camera to external resources. To make this easy, add a 64-bit integer cookie to the Request class that is set when the request is created and can be retrieved at any time, especially in the request completion handler. The cookie is completely transparent for libcamera and is never modified. Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Reviewed-by: Niklas Söderlund <niklas.soderlund@ragnatech.se>
135 lines
2.8 KiB
C++
135 lines
2.8 KiB
C++
/* SPDX-License-Identifier: LGPL-2.1-or-later */
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/*
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* Copyright (C) 2018, Google Inc.
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*
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* camera.h - Camera object interface
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*/
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#ifndef __LIBCAMERA_CAMERA_H__
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#define __LIBCAMERA_CAMERA_H__
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#include <map>
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#include <memory>
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#include <set>
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#include <stdint.h>
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#include <string>
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#include <libcamera/controls.h>
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#include <libcamera/request.h>
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#include <libcamera/signal.h>
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#include <libcamera/stream.h>
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namespace libcamera {
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class Buffer;
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class PipelineHandler;
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class Request;
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class CameraConfiguration
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{
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public:
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enum Status {
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Valid,
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Adjusted,
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Invalid,
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};
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using iterator = std::vector<StreamConfiguration>::iterator;
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using const_iterator = std::vector<StreamConfiguration>::const_iterator;
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virtual ~CameraConfiguration();
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void addConfiguration(const StreamConfiguration &cfg);
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virtual Status validate() = 0;
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StreamConfiguration &at(unsigned int index);
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const StreamConfiguration &at(unsigned int index) const;
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StreamConfiguration &operator[](unsigned int index)
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{
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return at(index);
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}
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const StreamConfiguration &operator[](unsigned int index) const
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{
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return at(index);
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}
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iterator begin();
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const_iterator begin() const;
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iterator end();
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const_iterator end() const;
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bool empty() const;
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std::size_t size() const;
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protected:
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CameraConfiguration();
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std::vector<StreamConfiguration> config_;
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};
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class Camera final : public std::enable_shared_from_this<Camera>
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{
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public:
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static std::shared_ptr<Camera> create(PipelineHandler *pipe,
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const std::string &name,
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const std::set<Stream *> &streams);
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Camera(const Camera &) = delete;
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Camera &operator=(const Camera &) = delete;
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const std::string &name() const;
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Signal<Request *, Buffer *> bufferCompleted;
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Signal<Request *, const std::map<Stream *, Buffer *> &> requestCompleted;
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Signal<Camera *> disconnected;
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int acquire();
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int release();
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const ControlInfoMap &controls();
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const std::set<Stream *> &streams() const;
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std::unique_ptr<CameraConfiguration> generateConfiguration(const StreamRoles &roles);
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int configure(CameraConfiguration *config);
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int allocateBuffers();
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int freeBuffers();
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Request *createRequest(uint64_t cookie = 0);
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int queueRequest(Request *request);
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int start();
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int stop();
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private:
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enum State {
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CameraAvailable,
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CameraAcquired,
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CameraConfigured,
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CameraPrepared,
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CameraRunning,
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};
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Camera(PipelineHandler *pipe, const std::string &name);
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~Camera();
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bool stateBetween(State low, State high) const;
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bool stateIs(State state) const;
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friend class PipelineHandler;
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void disconnect();
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void requestComplete(Request *request);
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std::shared_ptr<PipelineHandler> pipe_;
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std::string name_;
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std::set<Stream *> streams_;
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std::set<Stream *> activeStreams_;
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bool disconnected_;
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State state_;
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};
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} /* namespace libcamera */
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#endif /* __LIBCAMERA_CAMERA_H__ */
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