DcraftBg
647d6a273d
- Removed virtual functions for all of the stat stuff. This did however introduce some issues, mainly with /proc becoming out of sync if you changed your ID. I propose we do the linux thing and just have a stat update function which is optional, but allows dynamic updates of stat fields for cases such as those in uid/gid in /proc. - Simplified the API, although still kind of annoying it is a bit simpler. - Moved some of the FS structure from having the FS inode inside the in memory inode to a Serialise <-> Deserialise model where Inodes are deserialised from disk into in memory ones and then back into on disk ones when it comes time for syncing. This makes it semantically better in my opinion, as it explicitly separates disk and non-disk functionality.
66 lines
2.1 KiB
C++
66 lines
2.1 KiB
C++
#pragma once
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#include <kernel/Device/Device.h>
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#include <kernel/Memory/VirtualRange.h>
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namespace Kernel
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{
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class FramebufferDevice : public CharacterDevice
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{
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public:
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static BAN::ErrorOr<BAN::RefPtr<FramebufferDevice>> create_from_boot_framebuffer();
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static BAN::RefPtr<FramebufferDevice> boot_framebuffer();
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~FramebufferDevice();
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uint32_t width() const { return m_width; }
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uint32_t height() const { return m_height; }
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uint32_t get_pixel(uint32_t x, uint32_t y) const;
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void set_pixel(uint32_t x, uint32_t y, uint32_t rgb);
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void fill(uint32_t rgb);
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// positive rows -> empty pixels on bottom
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// negative rows -> empty pixels on top
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void scroll(int32_t rows, uint32_t rgb);
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void sync_pixels_full();
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void sync_pixels_linear(uint32_t first_pixel, uint32_t pixel_count);
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void sync_pixels_rectangle(uint32_t top_right_x, uint32_t top_right_y, uint32_t width, uint32_t height);
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virtual BAN::ErrorOr<BAN::UniqPtr<MemoryRegion>> mmap_region(PageTable&, off_t offset, size_t len, AddressRange, MemoryRegion::Type, PageTable::flags_t, int status_flags) override;
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virtual BAN::StringView name() const override { return m_name.sv(); }
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protected:
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virtual BAN::ErrorOr<size_t> read_impl(off_t, BAN::ByteSpan) override;
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virtual BAN::ErrorOr<size_t> write_impl(off_t, BAN::ConstByteSpan) override;
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BAN::ErrorOr<long> ioctl_impl(int cmd, void* arg) override;
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virtual bool can_read_impl() const override { return true; }
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virtual bool can_write_impl() const override { return true; }
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virtual bool has_error_impl() const override { return false; }
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virtual bool has_hungup_impl() const override { return false; }
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private:
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FramebufferDevice(mode_t mode, uid_t uid, gid_t gid, dev_t rdev, paddr_t paddr, uint32_t width, uint32_t height, uint32_t pitch, uint8_t bpp);
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BAN::ErrorOr<void> initialize();
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private:
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const BAN::String m_name;
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vaddr_t m_video_memory_vaddr { 0 };
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const paddr_t m_video_memory_paddr;
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const uint32_t m_width;
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const uint32_t m_height;
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const uint32_t m_pitch;
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const uint8_t m_bpp;
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BAN::UniqPtr<VirtualRange> m_video_buffer;
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friend class FramebufferMemoryRegion;
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};
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}
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