ladybird/Kernel/API/FB.h

/*
 * Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
 *
 * SPDX-License-Identifier: BSD-2-Clause
 */

#pragma once

#include <AK/Platform.h>
#include <stddef.h>
#include <sys/cdefs.h>
#include <sys/ioctl.h>

__BEGIN_DECLS

ALWAYS_INLINE int fb_get_size_in_bytes(int fd, size_t* out)
{
    return ioctl(fd, FB_IOCTL_GET_SIZE_IN_BYTES, out);
}

ALWAYS_INLINE int fb_get_resolution(int fd, FBResolution* info)
{
    return ioctl(fd, FB_IOCTL_GET_RESOLUTION, info);
}

ALWAYS_INLINE int fb_set_resolution(int fd, FBResolution* info)
{
    return ioctl(fd, FB_IOCTL_SET_RESOLUTION, info);
}

ALWAYS_INLINE int fb_get_buffer_offset(int fd, int index, unsigned* offset)
{
    FBBufferOffset fb_buffer_offset;
    fb_buffer_offset.buffer_index = index;
    int result = ioctl(fd, FB_IOCTL_GET_BUFFER_OFFSET, &fb_buffer_offset);
    if (result == 0)
        *offset = fb_buffer_offset.offset;
    return result;
}

ALWAYS_INLINE int fb_get_buffer(int fd, int* index)
{
    return ioctl(fd, FB_IOCTL_GET_BUFFER, index);
}

ALWAYS_INLINE int fb_set_buffer(int fd, int index)
{
    return ioctl(fd, FB_IOCTL_SET_BUFFER, index);
}

ALWAYS_INLINE int fb_flush_buffers(int fd, int index, FBRect const* rects, unsigned count)
{
    FBFlushRects fb_flush_rects;
    fb_flush_rects.buffer_index = index;
    fb_flush_rects.count = count;
    fb_flush_rects.rects = rects;
    return ioctl(fd, FB_IOCTL_FLUSH_BUFFERS, &fb_flush_rects);
}

__END_DECLS