883334135b
When the CIO2 returns a cancelled buffer, we will not queue buffers to the IMGU. These buffers should be explicitly marked as cancelled to ensure the application knows there is no valid metadata or frame data provided in the buffer. Provide a cancel() method on the FrameBuffer to allow explicitly cancelling a buffer. Reviewed-by: Jean-Michel Hautbois <jeanmichel.hautbois@ideasonboard.com> Reviewed-by: Hirokazu Honda <hiroh@chromium.org> Signed-off-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
74 lines
1.4 KiB
C++
74 lines
1.4 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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* buffer.h - Buffer handling
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*/
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#ifndef __LIBCAMERA_BUFFER_H__
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#define __LIBCAMERA_BUFFER_H__
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#include <stdint.h>
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#include <vector>
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#include <libcamera/class.h>
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#include <libcamera/file_descriptor.h>
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namespace libcamera {
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class Request;
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struct FrameMetadata {
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enum Status {
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FrameSuccess,
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FrameError,
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FrameCancelled,
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};
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struct Plane {
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unsigned int bytesused;
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};
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Status status;
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unsigned int sequence;
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uint64_t timestamp;
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std::vector<Plane> planes;
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};
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class FrameBuffer final
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{
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public:
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struct Plane {
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FileDescriptor fd;
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unsigned int length;
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};
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FrameBuffer(const std::vector<Plane> &planes, unsigned int cookie = 0);
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const std::vector<Plane> &planes() const { return planes_; }
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Request *request() const { return request_; }
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void setRequest(Request *request) { request_ = request; }
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const FrameMetadata &metadata() const { return metadata_; }
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unsigned int cookie() const { return cookie_; }
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void setCookie(unsigned int cookie) { cookie_ = cookie; }
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void cancel() { metadata_.status = FrameMetadata::FrameCancelled; }
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private:
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LIBCAMERA_DISABLE_COPY_AND_MOVE(FrameBuffer)
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friend class V4L2VideoDevice; /* Needed to update metadata_. */
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std::vector<Plane> planes_;
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Request *request_;
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FrameMetadata metadata_;
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unsigned int cookie_;
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};
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} /* namespace libcamera */
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#endif /* __LIBCAMERA_BUFFER_H__ */
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