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https://github.com/RGBCube/serenity
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8554952690
We create a base class called GenericFramebufferDevice, which defines all the virtual functions that must be implemented by a FramebufferDevice. Then, we make the VirtIO FramebufferDevice and other FramebufferDevice implementations inherit from it. The most important consequence of rearranging the classes is that we now have one IOCTL method, so all drivers should be committed to not override the IOCTL method or make their own IOCTLs of FramebufferDevice. All graphical IOCTLs are known to all FramebufferDevices, and it's up to the specific implementation whether to support them or discard them (so we require extensive usage of KResult and KResultOr, together with virtual characteristic functions). As a result, the interface is much cleaner and understandable to read.
63 lines
1.7 KiB
C
63 lines
1.7 KiB
C
/*
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* Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
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*
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* SPDX-License-Identifier: BSD-2-Clause
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*/
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#pragma once
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#include <AK/Platform.h>
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#include <stddef.h>
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#include <sys/cdefs.h>
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#include <sys/ioctl.h>
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__BEGIN_DECLS
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ALWAYS_INLINE int fb_get_properties(int fd, FBProperties* info)
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{
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return ioctl(fd, FB_IOCTL_GET_PROPERTIES, info);
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}
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ALWAYS_INLINE int fb_get_head_properties(int fd, FBHeadProperties* info)
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{
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return ioctl(fd, FB_IOCTL_GET_HEAD_PROPERTIES, info);
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}
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ALWAYS_INLINE int fb_get_resolution(int fd, FBHeadResolution* info)
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{
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FBHeadProperties head_properties;
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head_properties.head_index = info->head_index;
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if (auto rc = ioctl(fd, FB_IOCTL_GET_HEAD_PROPERTIES, &head_properties); rc < 0)
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return rc;
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info->head_index = head_properties.head_index;
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info->pitch = head_properties.pitch;
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info->width = head_properties.width;
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info->height = head_properties.height;
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return 0;
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}
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ALWAYS_INLINE int fb_set_resolution(int fd, FBHeadResolution* info)
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{
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return ioctl(fd, FB_IOCTL_SET_HEAD_RESOLUTION, info);
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}
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ALWAYS_INLINE int fb_get_head_vertical_offset_buffer(int fd, FBHeadVerticalOffset* vertical_offset)
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{
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return ioctl(fd, FB_IOCTL_GET_HEAD_VERITCAL_OFFSET_BUFFER, vertical_offset);
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}
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ALWAYS_INLINE int fb_set_head_vertical_offset_buffer(int fd, FBHeadVerticalOffset* vertical_offset)
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{
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return ioctl(fd, FB_IOCTL_SET_HEAD_VERITCAL_OFFSET_BUFFER, vertical_offset);
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}
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ALWAYS_INLINE int fb_flush_buffers(int fd, int index, FBRect const* rects, unsigned count)
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{
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FBFlushRects fb_flush_rects;
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fb_flush_rects.buffer_index = index;
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fb_flush_rects.count = count;
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fb_flush_rects.rects = rects;
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return ioctl(fd, FB_IOCTL_FLUSH_HEAD_BUFFERS, &fb_flush_rects);
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}
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__END_DECLS
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