framebuffer_allocator.h

Go to the documentation of this file.

/* SPDX-License-Identifier: LGPL-2.1-or-later */
/*
 * Copyright (C) 2019, Google Inc.
 *
 * FrameBuffer allocator
 */

#pragma once

#include <map>
#include <memory>
#include <vector>

#include <libcamera/base/class.h>

namespace libcamera {

class Camera;
class FrameBuffer;
class Stream;

class FrameBufferAllocator
{
public:
    FrameBufferAllocator(std::shared_ptr<Camera> camera);
    ~FrameBufferAllocator();

    int allocate(Stream *stream);
    int free(Stream *stream);

    bool allocated() const { return !buffers_.empty(); }
    const std::vector<std::unique_ptr<FrameBuffer>> &buffers(Stream *stream) const;

private:
    LIBCAMERA_DISABLE_COPY(FrameBufferAllocator)

    std::shared_ptr<Camera> camera_;
    std::map<Stream *, std::vector<std::unique_ptr<FrameBuffer>>> buffers_;
};

} /* namespace libcamera */