99e1e786b4
Define the memory type a Stream uses and allow application to set it through the associated StreamConfiguration. A Stream can use either internal or external memory allocation methods, depending on where the data produced by the stream is actually saved. Signed-off-by: Jacopo Mondi <jacopo@jmondi.org> Reviewed-by: Niklas Söderlund <niklas.soderlund@ragnatech.se> Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
98 lines
1.9 KiB
C++
98 lines
1.9 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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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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