libcamera v0.4.0+5314-fc77c53d-nvm
Supporting cameras in Linux since 2019
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framebuffer_allocator.h
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1/* SPDX-License-Identifier: LGPL-2.1-or-later */
2/*
3 * Copyright (C) 2019, Google Inc.
4 *
5 * FrameBuffer allocator
6 */
7
8#pragma once
9
10#include <map>
11#include <memory>
12#include <vector>
13
14#include <libcamera/base/class.h>
15
16namespace libcamera {
17
18class Camera;
19class FrameBuffer;
20class Stream;
21
23{
24public:
25 FrameBufferAllocator(std::shared_ptr<Camera> camera);
27
28 int allocate(Stream *stream);
29 int free(Stream *stream);
30
31 bool allocated() const { return !buffers_.empty(); }
32 const std::vector<std::unique_ptr<FrameBuffer>> &buffers(Stream *stream) const;
33
34private:
35 LIBCAMERA_DISABLE_COPY(FrameBufferAllocator)
36
37 std::shared_ptr<Camera> camera_;
38 std::map<Stream *, std::vector<std::unique_ptr<FrameBuffer>>> buffers_;
39};
40
41} /* namespace libcamera */
FrameBuffer allocator for applications.
Definition framebuffer_allocator.h:23
int free(Stream *stream)
Free buffers previously allocated for a stream.
Definition framebuffer_allocator.cpp:119
int allocate(Stream *stream)
Allocate buffers for a configured stream.
Definition framebuffer_allocator.cpp:86
const std::vector< std::unique_ptr< FrameBuffer > > & buffers(Stream *stream) const
Retrieve the buffers allocated for a stream.
Definition framebuffer_allocator.cpp:148
bool allocated() const
Check if the allocator has allocated buffers for any stream.
Definition framebuffer_allocator.h:31
Video stream for a camera.
Definition stream.h:76
Top-level libcamera namespace.
Definition bound_method.h:15