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https://github.com/fergalmoran/ladybird.git
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1b2ef8582c
Asking a File if we could possibly read or write it will never mutate the asking FileDescription&, so it should be const.
37 lines
1.3 KiB
C++
37 lines
1.3 KiB
C++
#pragma once
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#include <AK/String.h>
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#include <AK/Types.h>
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#include <Kernel/Devices/BlockDevice.h>
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#include <Kernel/VM/PhysicalAddress.h>
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class BXVGADevice final : public BlockDevice {
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AK_MAKE_ETERNAL
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public:
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static BXVGADevice& the();
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BXVGADevice();
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virtual int ioctl(FileDescription&, unsigned request, unsigned arg) override;
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virtual KResultOr<Region*> mmap(Process&, FileDescription&, VirtualAddress preferred_vaddr, size_t offset, size_t, int prot) override;
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private:
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virtual const char* class_name() const override { return "BXVGA"; }
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virtual bool can_read(const FileDescription&) const override;
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virtual bool can_write(const FileDescription&) const override;
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virtual ssize_t read(FileDescription&, u8*, ssize_t) override;
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virtual ssize_t write(FileDescription&, const u8*, ssize_t) override;
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void set_register(u16 index, u16 value);
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u32 find_framebuffer_address();
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size_t framebuffer_size_in_bytes() const { return m_framebuffer_pitch * m_framebuffer_height * 2; }
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void set_resolution(int width, int height);
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void set_y_offset(int);
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PhysicalAddress m_framebuffer_address;
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int m_framebuffer_pitch { 0 };
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int m_framebuffer_width { 0 };
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int m_framebuffer_height { 0 };
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int m_y_offset { 0 };
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};
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