be3e3ebc92
All interactions with the Stream's buffers currently go through the BufferPool. In order to shorten accessing the buffers array, and eventually restrict access to the Stream's internal buffer pool, provide operations to access, create and destroy buffers. It is still possible to access the pool for pipeline handlers to populate it by exporting buffers from a video device to Stream's pool. Signed-off-by: Jacopo Mondi <jacopo@jmondi.org> Reviewed-by: Niklas Söderlund <niklas.soderlund@ragnatech.se>
90 lines
1.8 KiB
C++
90 lines
1.8 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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* stream.h - Video stream for a Camera
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*/
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#ifndef __LIBCAMERA_STREAM_H__
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#define __LIBCAMERA_STREAM_H__
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#include <map>
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#include <memory>
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#include <string>
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#include <vector>
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#include <libcamera/buffer.h>
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#include <libcamera/geometry.h>
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namespace libcamera {
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class Camera;
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class Stream;
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class StreamFormats
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{
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public:
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StreamFormats();
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StreamFormats(const std::map<unsigned int, std::vector<SizeRange>> &formats);
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std::vector<unsigned int> pixelformats() const;
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std::vector<Size> sizes(unsigned int pixelformat) const;
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SizeRange range(unsigned int pixelformat) const;
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private:
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std::map<unsigned int, std::vector<SizeRange>> formats_;
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};
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struct StreamConfiguration {
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StreamConfiguration();
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StreamConfiguration(const StreamFormats &formats);
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unsigned int pixelFormat;
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Size size;
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unsigned int bufferCount;
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Stream *stream() const { return stream_; }
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void setStream(Stream *stream) { stream_ = stream; }
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const StreamFormats &formats() const { return formats_; }
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std::string toString() const;
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private:
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Stream *stream_;
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StreamFormats formats_;
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};
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enum StreamRole {
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StillCapture,
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VideoRecording,
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Viewfinder,
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};
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using StreamRoles = std::vector<StreamRole>;
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class Stream
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{
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public:
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Stream();
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std::unique_ptr<Buffer> createBuffer(unsigned int index);
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BufferPool &bufferPool() { return bufferPool_; }
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std::vector<BufferMemory> &buffers() { return bufferPool_.buffers(); }
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const StreamConfiguration &configuration() const { return configuration_; }
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protected:
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friend class Camera;
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void createBuffers(unsigned int count);
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void destroyBuffers();
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BufferPool bufferPool_;
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StreamConfiguration configuration_;
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};
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} /* namespace libcamera */
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#endif /* __LIBCAMERA_STREAM_H__ */
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