f1199a1011
In addition to referencing buffer memory by index, add support to referencing it using dmabuf file descriptors. This will be used to reference buffer memory allocated outside of libcamera and import it. The dmabuf file descriptors are stored in an array in the Buffer class, and a new Stream::createBuffer() overload is added to construct a buffer from dmabuf file descriptor. Signed-off-by: Jacopo Mondi <jacopo@jmondi.org> Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Reviewed-by: Niklas Söderlund <niklas.soderlund@ragnatech.se>
99 lines
2.0 KiB
C++
99 lines
2.0 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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enum MemoryType {
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InternalMemory,
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ExternalMemory,
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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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MemoryType memoryType;
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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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std::unique_ptr<Buffer> createBuffer(const std::array<int, 3> &fds);
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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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MemoryType memoryType() const { return memoryType_; }
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protected:
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friend class Camera;
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void createBuffers(MemoryType memory, 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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MemoryType memoryType_;
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};
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} /* namespace libcamera */
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#endif /* __LIBCAMERA_STREAM_H__ */
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