framebuffer_allocator.h

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