1 // Copyright (c) 2013 The Chromium Authors. All rights reserved.
2 // Use of this source code is governed by a BSD-style license that can be
3 // found in the LICENSE file.
4
5 #include "base/x11/edid_parser_x11.h"
6
7 #include "base/memory/scoped_ptr.h"
8 #include "testing/gtest/include/gtest/gtest.h"
9
10 #include <X11/extensions/Xrandr.h>
11
12 namespace base {
13
14 namespace {
15
16 // Returns the number of characters in the string literal but doesn't count its
17 // terminator NULL byte.
18 #define charsize(str) (arraysize(str) - 1)
19
20 // Sample EDID data extracted from real devices.
21 const unsigned char kNormalDisplay[] =
22 "\x00\xff\xff\xff\xff\xff\xff\x00\x22\xf0\x6c\x28\x01\x01\x01\x01"
23 "\x02\x16\x01\x04\xb5\x40\x28\x78\xe2\x8d\x85\xad\x4f\x35\xb1\x25"
24 "\x0e\x50\x54\x00\x00\x00\x01\x01\x01\x01\x01\x01\x01\x01\x01\x01"
25 "\x01\x01\x01\x01\x01\x01\xe2\x68\x00\xa0\xa0\x40\x2e\x60\x30\x20"
26 "\x36\x00\x81\x90\x21\x00\x00\x1a\xbc\x1b\x00\xa0\x50\x20\x17\x30"
27 "\x30\x20\x36\x00\x81\x90\x21\x00\x00\x1a\x00\x00\x00\xfc\x00\x48"
28 "\x50\x20\x5a\x52\x33\x30\x77\x0a\x20\x20\x20\x20\x00\x00\x00\xff"
29 "\x00\x43\x4e\x34\x32\x30\x32\x31\x33\x37\x51\x0a\x20\x20\x00\x71";
30
31 const unsigned char kInternalDisplay[] =
32 "\x00\xff\xff\xff\xff\xff\xff\x00\x4c\xa3\x42\x31\x00\x00\x00\x00"
33 "\x00\x15\x01\x03\x80\x1a\x10\x78\x0a\xd3\xe5\x95\x5c\x60\x90\x27"
34 "\x19\x50\x54\x00\x00\x00\x01\x01\x01\x01\x01\x01\x01\x01\x01\x01"
35 "\x01\x01\x01\x01\x01\x01\x9e\x1b\x00\xa0\x50\x20\x12\x30\x10\x30"
36 "\x13\x00\x05\xa3\x10\x00\x00\x19\x00\x00\x00\x0f\x00\x00\x00\x00"
37 "\x00\x00\x00\x00\x00\x23\x87\x02\x64\x00\x00\x00\x00\xfe\x00\x53"
38 "\x41\x4d\x53\x55\x4e\x47\x0a\x20\x20\x20\x20\x20\x00\x00\x00\xfe"
39 "\x00\x31\x32\x31\x41\x54\x31\x31\x2d\x38\x30\x31\x0a\x20\x00\x45";
40
41 const unsigned char kOverscanDisplay[] =
42 "\x00\xff\xff\xff\xff\xff\xff\x00\x4c\x2d\xfe\x08\x00\x00\x00\x00"
43 "\x29\x15\x01\x03\x80\x10\x09\x78\x0a\xee\x91\xa3\x54\x4c\x99\x26"
44 "\x0f\x50\x54\xbd\xef\x80\x71\x4f\x81\xc0\x81\x00\x81\x80\x95\x00"
45 "\xa9\xc0\xb3\x00\x01\x01\x02\x3a\x80\x18\x71\x38\x2d\x40\x58\x2c"
46 "\x45\x00\xa0\x5a\x00\x00\x00\x1e\x66\x21\x56\xaa\x51\x00\x1e\x30"
47 "\x46\x8f\x33\x00\xa0\x5a\x00\x00\x00\x1e\x00\x00\x00\xfd\x00\x18"
48 "\x4b\x0f\x51\x17\x00\x0a\x20\x20\x20\x20\x20\x20\x00\x00\x00\xfc"
49 "\x00\x53\x41\x4d\x53\x55\x4e\x47\x0a\x20\x20\x20\x20\x20\x01\x1d"
50 "\x02\x03\x1f\xf1\x47\x90\x04\x05\x03\x20\x22\x07\x23\x09\x07\x07"
51 "\x83\x01\x00\x00\xe2\x00\x0f\x67\x03\x0c\x00\x20\x00\xb8\x2d\x01"
52 "\x1d\x80\x18\x71\x1c\x16\x20\x58\x2c\x25\x00\xa0\x5a\x00\x00\x00"
53 "\x9e\x01\x1d\x00\x72\x51\xd0\x1e\x20\x6e\x28\x55\x00\xa0\x5a\x00"
54 "\x00\x00\x1e\x8c\x0a\xd0\x8a\x20\xe0\x2d\x10\x10\x3e\x96\x00\xa0"
55 "\x5a\x00\x00\x00\x18\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
56 "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
57 "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\xc6";
58
59 const unsigned char kLP2565A[] =
60 "\x00\xFF\xFF\xFF\xFF\xFF\xFF\x00\x22\xF0\x76\x26\x01\x01\x01\x01"
61 "\x02\x12\x01\x03\x80\x34\x21\x78\xEE\xEF\x95\xA3\x54\x4C\x9B\x26"
62 "\x0F\x50\x54\xA5\x6B\x80\x81\x40\x81\x80\x81\x99\x71\x00\xA9\x00"
63 "\xA9\x40\xB3\x00\xD1\x00\x28\x3C\x80\xA0\x70\xB0\x23\x40\x30\x20"
64 "\x36\x00\x07\x44\x21\x00\x00\x1A\x00\x00\x00\xFD\x00\x30\x55\x1E"
65 "\x5E\x11\x00\x0A\x20\x20\x20\x20\x20\x20\x00\x00\x00\xFC\x00\x48"
66 "\x50\x20\x4C\x50\x32\x34\x36\x35\x0A\x20\x20\x20\x00\x00\x00\xFF"
67 "\x00\x43\x4E\x4B\x38\x30\x32\x30\x34\x48\x4D\x0A\x20\x20\x00\xA4";
68
69 const unsigned char kLP2565B[] =
70 "\x00\xFF\xFF\xFF\xFF\xFF\xFF\x00\x22\xF0\x75\x26\x01\x01\x01\x01"
71 "\x02\x12\x01\x03\x6E\x34\x21\x78\xEE\xEF\x95\xA3\x54\x4C\x9B\x26"
72 "\x0F\x50\x54\xA5\x6B\x80\x81\x40\x71\x00\xA9\x00\xA9\x40\xA9\x4F"
73 "\xB3\x00\xD1\xC0\xD1\x00\x28\x3C\x80\xA0\x70\xB0\x23\x40\x30\x20"
74 "\x36\x00\x07\x44\x21\x00\x00\x1A\x00\x00\x00\xFD\x00\x30\x55\x1E"
75 "\x5E\x15\x00\x0A\x20\x20\x20\x20\x20\x20\x00\x00\x00\xFC\x00\x48"
76 "\x50\x20\x4C\x50\x32\x34\x36\x35\x0A\x20\x20\x20\x00\x00\x00\xFF"
77 "\x00\x43\x4E\x4B\x38\x30\x32\x30\x34\x48\x4D\x0A\x20\x20\x00\x45";
78
79 } // namespace
80
TEST(EdidParserX11Test,ParseEDID)81 TEST(EdidParserX11Test, ParseEDID) {
82 uint16 manufacturer_id = 0;
83 std::string human_readable_name;
84 EXPECT_TRUE(ParseOutputDeviceData(
85 kNormalDisplay, charsize(kNormalDisplay),
86 &manufacturer_id, &human_readable_name));
87 EXPECT_EQ(0x22f0u, manufacturer_id);
88 EXPECT_EQ("HP ZR30w", human_readable_name);
89
90 manufacturer_id = 0;
91 human_readable_name.clear();
92 EXPECT_TRUE(ParseOutputDeviceData(
93 kInternalDisplay, charsize(kInternalDisplay),
94 &manufacturer_id, NULL));
95 EXPECT_EQ(0x4ca3u, manufacturer_id);
96 EXPECT_EQ("", human_readable_name);
97
98 // Internal display doesn't have name.
99 EXPECT_TRUE(ParseOutputDeviceData(
100 kInternalDisplay, charsize(kInternalDisplay),
101 NULL, &human_readable_name));
102 EXPECT_TRUE(human_readable_name.empty());
103
104 manufacturer_id = 0;
105 human_readable_name.clear();
106 EXPECT_TRUE(ParseOutputDeviceData(
107 kOverscanDisplay, charsize(kOverscanDisplay),
108 &manufacturer_id, &human_readable_name));
109 EXPECT_EQ(0x4c2du, manufacturer_id);
110 EXPECT_EQ("SAMSUNG", human_readable_name);
111 }
112
TEST(EdidParserX11Test,ParseBrokenEDID)113 TEST(EdidParserX11Test, ParseBrokenEDID) {
114 uint16 manufacturer_id = 0;
115 std::string human_readable_name;
116
117 // length == 0
118 EXPECT_FALSE(ParseOutputDeviceData(
119 kNormalDisplay, 0,
120 &manufacturer_id, &human_readable_name));
121
122 // name is broken. Copying kNormalDisplay and substitute its name data by
123 // some control code.
124 std::string display_data(
125 reinterpret_cast<const char*>(kNormalDisplay), charsize(kNormalDisplay));
126
127 // display's name data is embedded in byte 95-107 in this specific example.
128 // Fix here too when the contents of kNormalDisplay is altered.
129 display_data[97] = '\x1b';
130 EXPECT_FALSE(ParseOutputDeviceData(
131 reinterpret_cast<const unsigned char*>(display_data.data()),
132 display_data.size(),
133 &manufacturer_id, &human_readable_name));
134
135 // If |human_readable_name| isn't specified, it skips parsing the name.
136 manufacturer_id = 0;
137 EXPECT_TRUE(ParseOutputDeviceData(
138 reinterpret_cast<const unsigned char*>(display_data.data()),
139 display_data.size(),
140 &manufacturer_id, NULL));
141 EXPECT_EQ(0x22f0u, manufacturer_id);
142 }
143
TEST(EdidParserX11Test,GetDisplayId)144 TEST(EdidParserX11Test, GetDisplayId) {
145 // EDID of kLP2565A and B are slightly different but actually the same device.
146 int64 id1 = -1;
147 int64 id2 = -1;
148 EXPECT_TRUE(GetDisplayIdFromEDID(kLP2565A, charsize(kLP2565A), 0, &id1));
149 EXPECT_TRUE(GetDisplayIdFromEDID(kLP2565B, charsize(kLP2565B), 0, &id2));
150 EXPECT_EQ(id1, id2);
151 EXPECT_NE(-1, id1);
152 }
153
TEST(EdidParserX11Test,GetDisplayIdFromInternal)154 TEST(EdidParserX11Test, GetDisplayIdFromInternal) {
155 int64 id = -1;
156 EXPECT_TRUE(GetDisplayIdFromEDID(
157 kInternalDisplay, charsize(kInternalDisplay), 0, &id));
158 EXPECT_NE(-1, id);
159 }
160
TEST(EdidParserX11Test,GetDisplayIdFailure)161 TEST(EdidParserX11Test, GetDisplayIdFailure) {
162 int64 id = -1;
163 EXPECT_FALSE(GetDisplayIdFromEDID(NULL, 0, 0, &id));
164 EXPECT_EQ(-1, id);
165 }
166
167 } // namespace base
168