From 18fd12e916c8a33007a8ccd305d280493e8cd27d Mon Sep 17 00:00:00 2001
From: jaseg <jaseg@jaseg.net>
Date: Mon, 17 Feb 2014 00:57:47 +0100
Subject: ctypes pointer narf working now

---
 host/server.py | 53 ++++++++++++++++++++++++++++++++++++++++-------------
 1 file changed, 40 insertions(+), 13 deletions(-)

(limited to 'host/server.py')

diff --git a/host/server.py b/host/server.py
index c8e665a..70afdf9 100755
--- a/host/server.py
+++ b/host/server.py
@@ -1,14 +1,16 @@
 #!/usr/bin/env python
 
-from ctypes import CDLL, POINTER, c_void_p, Structure, c_uint8, c_size_t, cast
+from ctypes import CDLL, POINTER, c_void_p, Structure, c_uint8, c_size_t, cast, addressof
 import numpy as np
+from itertools import product
 from matelight import sendframe
+from terminal import printframe
 
 class COLOR(Structure):
-	_fields_ = ('r', c_uint8), ('g', c_uint8), ('b', c_uint8), ('a', c_uint8)
+        _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)
+        _fields_ = [('data', POINTER(COLOR)), ('w', c_size_t), ('h', c_size_t)]
 
 bdf = CDLL('./libbdf.so')
 bdf.read_bdf_file.restype = c_void_p
@@ -17,16 +19,41 @@ 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
+    assert unifont
+    fb = bdf.framebuffer_render_text(bytes(str(text), 'UTF-8'), unifont)
+    fbd = fb.contents
+    print('FB STRUCT: w {} h {} memory location {:x}'.format(fbd.w, fbd.h, addressof(fbd.data.contents)))
+    print("TYPE:", type(fbd.data))
+    casted = cast(fbd.data, POINTER(c_uint8))
+    print("CASTED TYPE:" , type(casted))
+    buf = np.ctypeslib.as_array(cast(fbd.data, POINTER(c_uint8)), shape=(fbd.h, fbd.w, 4))
+    print('RAW DATA:')
+    alen = fbd.h*fbd.w
+#    for i in range(alen):
+#        c = fbd.data[i]
+#        print('{:x}'.format(addressof(c)), c.r, c.g, c.b)
+    print('BUF', buf.shape, buf.dtype)
+#    for x, y, z in product(range(fbd.h), range(fbd.w), range(4)):
+#        print(buf[x][y][z])
+
+    # 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
+    bdf.console_render_buffer(fb)
+    fbd.data = cast(c_void_p(), POINTER(COLOR))
+    bdf.free_framebuffer(fb)
+    print('Rendered {} chars into a buffer of w {} h {} numpy buf {}'.format(len(text), fbd.w, fbd.h, buf.shape))
+    return buf
 
 if __name__ == '__main__':
-	sendframe(render_text('test'));
+    fb = render_text('foobarbaz');
+    print('buffer shape {} dtype {}'.format(fb.shape, fb.dtype))
+#   import colorsys
+#    h, w, _ = fb.shape
+#    for x, y in product(range(w), range(h)):
+#        r,g,b = colorsys.hsv_to_rgb(x*0.03+y*0.05, 1, 1)
+#        fb[x][y] = (r,g,b,0)
+#    print(fb)
+    sendframe(fb)
+    #printframe(fb)
+
 
-- 
cgit