1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
|
#!/usr/bin/env python3
import os
import subprocess
import sys
def parse_hex_byte(s):
assert(s.endswith("h"))
s = s[:-1]
assert(0 <= int(s, 16) <= 255)
return "0x" + s
def parse_hex_list(s):
if s == "n/a":
return None
if s.startswith("("):
assert(s.endswith(")h"))
s = s[1:-2]
l = [b.strip() for b in s.split(",")]
l = [b[:-1] if b.endswith("h") else b for b in l]
for b in l:
assert(0 <= int(b, 16) <= 255)
return "0x" + "".join(l)
def parse_pixel_param(l):
l = l[2].split(" ")
assert(len(l) >= 2 and l[1] == "Pixels")
return int(l[0])
def parse_line_param(l):
l = l[1].split(" ")
assert(len(l) >= 2 and l[1] == "lines")
return int(l[0])
def parse_timing(page):
lines = [l.strip() for l in page.splitlines()]
if len(lines) < 6:
return None
try:
i = lines.index("Detailed Timing Parameters")
except ValueError:
return None
raw_metadata = lines[1:i]
raw_params = lines[i+1:]
metadata = {}
for l in raw_metadata:
if not ": " in l:
continue
k, v = l.split(":", 1)
metadata[k.strip()] = v.strip()
assert("Resolution" in metadata and "EDID ID" in metadata)
if "Proposed" in metadata and not "Adopted" in metadata:
print("skipping proposed but not adopted timing: " + metadata["Resolution"],
file=sys.stderr)
return None
params = {}
for l in raw_params:
if not " = " in l:
continue
tokens = [l.strip() for l in l.split("=")]
params[tokens[0]] = tokens[1:]
assert("Timing Name" in params)
res = metadata["Resolution"]
size, rest = res.split(" at ", 1)
horiz_video, vert_video = size.split("x", 1)
refresh_rate_hz, rest = rest.split(" Hz ", 1)
reduced_blanking = "reduced blanking" in rest.lower()
horiz_video = int(horiz_video.strip())
vert_video = int(vert_video.strip())
refresh_rate_hz = float(refresh_rate_hz.strip())
ids = {}
for kv in metadata["EDID ID"].split(";"):
k, v = kv.split(":")
ids[k.strip()] = v.strip()
assert("DMT ID" in ids)
dmt_id = parse_hex_byte(ids["DMT ID"])
edid_std_id = parse_hex_list(ids["Std. 2 Byte Code"])
cvt_id = parse_hex_list(ids["CVT 3 Byte Code"])
pixel_clock_mhz = float(params["Pixel Clock"][0].split(";")[0])
horiz_blank = parse_pixel_param(params["Hor Blank Time"])
horiz_front_porch = parse_pixel_param(params["// H Front Porch"])
horiz_sync_pulse = parse_pixel_param(params["Hor Sync Time"])
horiz_border = parse_pixel_param(params["// H Right Border"])
assert(horiz_border == parse_pixel_param(params["// H Left Border"]))
vert_blank = parse_line_param(params["Ver Blank Time"])
vert_front_porch = parse_line_param(params["// V Front Porch"])
vert_sync_pulse = parse_line_param(params["Ver Sync Time"])
vert_border = parse_line_param(params["// V Bottom Border"])
assert(vert_border == parse_line_param(params["// V Top Border"]))
return {
"dmt_id": dmt_id,
"edid_std_id": 0 if edid_std_id is None else edid_std_id,
"cvt_id": 0 if cvt_id is None else cvt_id,
"horiz_video": horiz_video,
"vert_video": vert_video,
"refresh_rate_hz": refresh_rate_hz,
"pixel_clock_hz": int(pixel_clock_mhz * 1000 * 1000),
"horiz_blank": horiz_blank,
"horiz_front_porch": horiz_front_porch,
"horiz_sync_pulse": horiz_sync_pulse,
"horiz_border": horiz_border,
"vert_blank": vert_blank,
"vert_front_porch": vert_front_porch,
"vert_sync_pulse": vert_sync_pulse,
"vert_border": vert_border,
"reduced_blanking": "true" if reduced_blanking else "false",
}
if len(sys.argv) != 2:
print("usage: gen-dmt.py <DMT PDF>", file=sys.stderr)
sys.exit(1)
in_path = sys.argv[1]
in_basename = os.path.basename(in_path)
tool_dir = os.path.dirname(os.path.realpath(__file__))
out_path = tool_dir + "/../dmt-table.c"
cmd = ["pdftotext", "-nodiag", "-layout", in_path, "-"]
page = ""
timings = []
for l in subprocess.check_output(cmd, text=True):
if l.startswith("\f"):
t = parse_timing(page)
if t is not None:
timings.append(t)
page = l[1:]
else:
page += l
with open(out_path, "w+") as f:
f.write("/* DO NOT EDIT! This file has been generated by gen-dmt.py from {}. */\n\n".format(in_basename))
f.write('#include "dmt.h"\n\n')
f.write("const struct di_dmt_timing _di_dmt_timings[] = {\n")
for t in timings:
f.write("\t{\n")
for k, v in t.items():
f.write("\t\t.{} = {},\n".format(k, v))
f.write("\t},\n")
f.write("};\n\n")
f.write("const size_t _di_dmt_timings_len = {};\n".format(len(timings)))
|
