The fundamentals of the new ctypes interface are working

host/server.py

@@ -0,0 +1,32 @@
+#!/usr/bin/env python
+
+from ctypes import CDLL, POINTER, c_void_p, Structure, c_uint8, c_size_t, cast
+import numpy as np
+from matelight import sendframe
+
+class COLOR(Structure):
+	_fields_ = ('r', c_uint8), ('g', c_uint8), ('b', c_uint8), ('a', c_uint8)
+
+class FRAMEBUFFER(Structure):
+	_fields_ = ('data', POINTER(COLOR)), ('w', c_size_t), ('h', c_size_t)
+
+bdf = CDLL('./libbdf.so')
+bdf.read_bdf_file.restype = c_void_p
+bdf.framebuffer_render_text.restype = POINTER(FRAMEBUFFER)
+
+unifont = bdf.read_bdf_file('unifont.bdf')
+
+def render_text(text):
+	assert unifont
+	fb = bdf.framebuffer_render_text(str(text), unifont)
+	fbd = fb.contents
+	buf = np.ctypeslib.as_array(cast(fbd.data, POINTER(c_uint8)), shape=(fbd.h, fbd.w, 4))
+	# Set data pointer to NULL before freeing framebuffer struct to prevent free_framebuffer from also freeing the data
+	# buffer that is now used by numpy
+	fb.data = cast(c_void_p(), POINTER(COLOR))
+	bdf.free_framebuffer(fb)
+	return buf
+
+if __name__ == '__main__':
+	sendframe(render_text('test'));
+