6c6acaa7ea
The FileDescriptor class is a generic helper that matches the criteria for the base library. Move it there. Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Reviewed-by: Hirokazu Honda <hiroh@chromium.org> Reviewed-by: Jacopo Mondi <jacopo@jmondi.org>
87 lines
2 KiB
C++
87 lines
2 KiB
C++
/* SPDX-License-Identifier: LGPL-2.1-or-later */
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/*
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* Copyright (C) 2019, Google Inc.
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*
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* v4l2_camera.h - V4L2 compatibility camera
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*/
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#pragma once
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#include <deque>
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#include <utility>
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#include <libcamera/base/file_descriptor.h>
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#include <libcamera/base/mutex.h>
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#include <libcamera/base/semaphore.h>
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#include <libcamera/camera.h>
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#include <libcamera/framebuffer.h>
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#include <libcamera/framebuffer_allocator.h>
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class V4L2Camera
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{
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public:
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struct Buffer {
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Buffer(unsigned int index, const libcamera::FrameMetadata &data)
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: index_(index), data_(data)
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{
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}
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unsigned int index_;
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libcamera::FrameMetadata data_;
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};
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V4L2Camera(std::shared_ptr<libcamera::Camera> camera);
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~V4L2Camera();
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int open(libcamera::StreamConfiguration *streamConfig);
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void close();
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void bind(int efd);
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void unbind();
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std::vector<Buffer> completedBuffers();
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int configure(libcamera::StreamConfiguration *streamConfigOut,
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const libcamera::Size &size,
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const libcamera::PixelFormat &pixelformat,
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unsigned int bufferCount);
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int validateConfiguration(const libcamera::PixelFormat &pixelformat,
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const libcamera::Size &size,
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libcamera::StreamConfiguration *streamConfigOut);
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int allocBuffers(unsigned int count);
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void freeBuffers();
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libcamera::FileDescriptor getBufferFd(unsigned int index);
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int streamOn();
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int streamOff();
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int qbuf(unsigned int index);
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void waitForBufferAvailable();
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bool isBufferAvailable();
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bool isRunning();
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private:
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void requestComplete(libcamera::Request *request);
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std::shared_ptr<libcamera::Camera> camera_;
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std::unique_ptr<libcamera::CameraConfiguration> config_;
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bool isRunning_;
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libcamera::Mutex bufferLock_;
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libcamera::FrameBufferAllocator *bufferAllocator_;
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std::vector<std::unique_ptr<libcamera::Request>> requestPool_;
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std::deque<libcamera::Request *> pendingRequests_;
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std::deque<std::unique_ptr<Buffer>> completedBuffers_;
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int efd_;
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libcamera::Mutex bufferMutex_;
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libcamera::ConditionVariable bufferCV_;
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unsigned int bufferAvailableCount_;
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};
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