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86 lines
3.1 KiB
C#
86 lines
3.1 KiB
C#
1 year ago
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global using static RPiRgbLEDMatrix.Bindings;
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using System.Runtime.InteropServices;
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namespace RPiRgbLEDMatrix;
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/*
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Some of the extern methods listed below are marked with [SuppressGCTransition].
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This disables some GC checks that may take a long time. But such methods should
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be fast and trivial, otherwise the managed code may become unstable (see docs).
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Keep this in mind when changing the C/C++ side.
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https://learn.microsoft.com/dotnet/api/system.runtime.interopservices.suppressgctransitionattribute
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*/
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internal static class Bindings
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{
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private const string Lib = "librgbmatrix.so.1";
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[DllImport(Lib)]
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public static extern IntPtr led_matrix_create(int rows, int chained, int parallel);
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[DllImport(Lib, CharSet = CharSet.Ansi)]
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public static extern IntPtr led_matrix_create_from_options_const_argv(
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ref InternalRGBLedMatrixOptions options,
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int argc,
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string[] argv);
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[DllImport(Lib)]
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public static extern void led_matrix_delete(IntPtr matrix);
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[DllImport(Lib)]
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public static extern IntPtr led_matrix_create_offscreen_canvas(IntPtr matrix);
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[DllImport(Lib)]
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public static extern IntPtr led_matrix_swap_on_vsync(IntPtr matrix, IntPtr canvas);
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[DllImport(Lib)]
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public static extern IntPtr led_matrix_get_canvas(IntPtr matrix);
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[DllImport(Lib)]
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[SuppressGCTransition]
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public static extern byte led_matrix_get_brightness(IntPtr matrix);
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[DllImport(Lib)]
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[SuppressGCTransition]
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public static extern void led_matrix_set_brightness(IntPtr matrix, byte brightness);
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[DllImport(Lib, CharSet = CharSet.Ansi)]
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public static extern IntPtr load_font(string bdf_font_file);
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[DllImport(Lib, CharSet = CharSet.Ansi)]
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public static extern int draw_text(IntPtr canvas, IntPtr font, int x, int y, byte r, byte g, byte b,
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string utf8_text, int extra_spacing);
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[DllImport(Lib, CharSet = CharSet.Ansi)]
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public static extern int vertical_draw_text(IntPtr canvas, IntPtr font, int x, int y, byte r, byte g, byte b,
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string utf8_text, int kerning_offset);
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[DllImport(Lib, CharSet = CharSet.Ansi)]
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public static extern void delete_font(IntPtr font);
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[DllImport(Lib)]
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[SuppressGCTransition]
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public static extern void led_canvas_get_size(IntPtr canvas, out int width, out int height);
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[DllImport(Lib)]
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[SuppressGCTransition]
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public static extern void led_canvas_set_pixel(IntPtr canvas, int x, int y, byte r, byte g, byte b);
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[DllImport(Lib)]
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public static extern void led_canvas_set_pixels(IntPtr canvas, int x, int y, int width, int height,
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ref Color colors);
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[DllImport(Lib)]
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public static extern void led_canvas_clear(IntPtr canvas);
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[DllImport(Lib)]
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public static extern void led_canvas_fill(IntPtr canvas, byte r, byte g, byte b);
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[DllImport(Lib)]
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public static extern void draw_circle(IntPtr canvas, int xx, int y, int radius, byte r, byte g, byte b);
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[DllImport(Lib)]
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public static extern void draw_line(IntPtr canvas, int x0, int y0, int x1, int y1, byte r, byte g, byte b);
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}
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