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/* SPDX-License-Identifier: LGPL-2.1-or-later */
/*
* Copyright (C) 2019, Google Inc.
*
* buffer.h - Buffer handling
*/
#ifndef __LIBCAMERA_BUFFER_H__
#define __LIBCAMERA_BUFFER_H__
#include <stdint.h>
#include <vector>
#include <libcamera/file_descriptor.h>
namespace libcamera {
class Request;
struct FrameMetadata {
enum Status {
FrameSuccess,
FrameError,
FrameCancelled,
};
struct Plane {
unsigned int bytesused;
};
Status status;
unsigned int sequence;
uint64_t timestamp;
std::vector<Plane> planes;
};
class FrameBuffer final
{
public:
struct Plane {
FileDescriptor fd;
unsigned int length;
};
FrameBuffer(const std::vector<Plane> &planes, unsigned int cookie = 0);
FrameBuffer(const FrameBuffer &) = delete;
FrameBuffer(FrameBuffer &&) = delete;
FrameBuffer &operator=(const FrameBuffer &) = delete;
FrameBuffer &operator=(FrameBuffer &&) = delete;
const std::vector<Plane> &planes() const { return planes_; }
Request *request() const { return request_; }
const FrameMetadata &metadata() const { return metadata_; };
unsigned int cookie() const { return cookie_; }
void setCookie(unsigned int cookie) { cookie_ = cookie; }
private:
friend class Request; /* Needed to update request_. */
friend class V4L2VideoDevice; /* Needed to update metadata_. */
std::vector<Plane> planes_;
Request *request_;
FrameMetadata metadata_;
unsigned int cookie_;
};
} /* namespace libcamera */
#endif /* __LIBCAMERA_BUFFER_H__ */
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