32 lines
1,020 B
Python
Executable file
32 lines
1,020 B
Python
Executable file
#!/usr/bin/env python
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from ctypes import CDLL, POINTER, c_void_p, Structure, c_uint8, c_size_t, cast
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import numpy as np
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from matelight import sendframe
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class COLOR(Structure):
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_fields_ = ('r', c_uint8), ('g', c_uint8), ('b', c_uint8), ('a', c_uint8)
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class FRAMEBUFFER(Structure):
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_fields_ = ('data', POINTER(COLOR)), ('w', c_size_t), ('h', c_size_t)
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bdf = CDLL('./libbdf.so')
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bdf.read_bdf_file.restype = c_void_p
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bdf.framebuffer_render_text.restype = POINTER(FRAMEBUFFER)
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unifont = bdf.read_bdf_file('unifont.bdf')
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def render_text(text):
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assert unifont
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fb = bdf.framebuffer_render_text(str(text), unifont)
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fbd = fb.contents
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buf = np.ctypeslib.as_array(cast(fbd.data, POINTER(c_uint8)), shape=(fbd.h, fbd.w, 4))
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# Set data pointer to NULL before freeing framebuffer struct to prevent free_framebuffer from also freeing the data
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# buffer that is now used by numpy
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fb.data = cast(c_void_p(), POINTER(COLOR))
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bdf.free_framebuffer(fb)
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return buf
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if __name__ == '__main__':
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sendframe(render_text('test'));
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