chromeos/display/output_util_unittest.cc

   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 "chromeos/display/output_util.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 chromeos {
  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 // The EDID info misdetecting overscan once. see crbug.com/226318
  60 const unsigned char kMisdetecedDisplay[] =
  61     "\x00\xff\xff\xff\xff\xff\xff\x00\x10\xac\x64\x40\x4c\x30\x30\x32"
  62     "\x0c\x15\x01\x03\x80\x40\x28\x78\xea\x8d\x85\xad\x4f\x35\xb1\x25"
  63     "\x0e\x50\x54\xa5\x4b\x00\x71\x4f\x81\x00\x81\x80\xd1\x00\xa9\x40"
  64     "\x01\x01\x01\x01\x01\x01\x28\x3c\x80\xa0\x70\xb0\x23\x40\x30\x20"
  65     "\x36\x00\x81\x91\x21\x00\x00\x1a\x00\x00\x00\xff\x00\x50\x48\x35"
  66     "\x4e\x59\x31\x33\x4e\x32\x30\x30\x4c\x0a\x00\x00\x00\xfc\x00\x44"
  67     "\x45\x4c\x4c\x20\x55\x33\x30\x31\x31\x0a\x20\x20\x00\x00\x00\xfd"
  68     "\x00\x31\x56\x1d\x5e\x12\x00\x0a\x20\x20\x20\x20\x20\x20\x01\x38"
  69     "\x02\x03\x29\xf1\x50\x90\x05\x04\x03\x02\x07\x16\x01\x06\x11\x12"
  70     "\x15\x13\x14\x1f\x20\x23\x0d\x7f\x07\x83\x0f\x00\x00\x67\x03\x0c"
  71     "\x00\x10\x00\x38\x2d\xe3\x05\x03\x01\x02\x3a\x80\x18\x71\x38\x2d"
  72     "\x40\x58\x2c\x45\x00\x81\x91\x21\x00\x00\x1e\x01\x1d\x80\x18\x71"
  73     "\x1c\x16\x20\x58\x2c\x25\x00\x81\x91\x21\x00\x00\x9e\x01\x1d\x00"
  74     "\x72\x51\xd0\x1e\x20\x6e\x28\x55\x00\x81\x91\x21\x00\x00\x1e\x8c"
  75     "\x0a\xd0\x8a\x20\xe0\x2d\x10\x10\x3e\x96\x00\x81\x91\x21\x00\x00"
  76     "\x18\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x94";
  77
  78 }  // namespace
  79
  80 TEST(OutputUtilTest, ParseOverscanFlag) {
  81   bool flag = false;
  82   EXPECT_FALSE(ParseOutputOverscanFlag(
  83       kNormalDisplay, charsize(kNormalDisplay), &flag));
  84
  85   flag = false;
  86   EXPECT_FALSE(ParseOutputOverscanFlag(
  87       kInternalDisplay, charsize(kInternalDisplay), &flag));
  88
  89   flag = false;
  90   EXPECT_TRUE(ParseOutputOverscanFlag(
  91       kOverscanDisplay, charsize(kOverscanDisplay), &flag));
  92   EXPECT_TRUE(flag);
  93
  94   flag = false;
  95   EXPECT_FALSE(ParseOutputOverscanFlag(
  96       kMisdetecedDisplay, charsize(kMisdetecedDisplay), &flag));
  97
  98   flag = false;
  99   // Copy |kOverscanDisplay| and set flags to false in it. The overscan flags
 100   // are embedded at byte 150 in this specific example. Fix here too when the
 101   // contents of kOverscanDisplay is altered.
 102   std::string display_data(reinterpret_cast<const char*>(kOverscanDisplay),
 103                            charsize(kOverscanDisplay));
 104   display_data[150] = '\0';
 105   EXPECT_TRUE(ParseOutputOverscanFlag(
 106       reinterpret_cast<const unsigned char*>(display_data.data()),
 107       display_data.size(), &flag));
 108   EXPECT_FALSE(flag);
 109 }
 110
 111 TEST(OutputUtilTest, ParseBrokenOverscanData) {
 112   // Do not fill valid data here because it anyway fails to parse the data.
 113   scoped_ptr<unsigned char[]> data(new unsigned char[126]);
 114   bool flag = false;
 115   EXPECT_FALSE(ParseOutputOverscanFlag(data.get(), 0, &flag));
 116   EXPECT_FALSE(ParseOutputOverscanFlag(data.get(), 126, &flag));
 117
 118   // extending data because ParseOutputOverscanFlag() will access the data.
 119   data.reset(new unsigned char[150]);
 120   // The number of CEA extensions is stored at byte 126.
 121   data[126] = '\x01';
 122   EXPECT_FALSE(ParseOutputOverscanFlag(data.get(), 128, &flag));
 123   EXPECT_FALSE(ParseOutputOverscanFlag(data.get(), 150, &flag));
 124 }
 125
 126 TEST(OutputUtilTest, IsInternalOutputName) {
 127   EXPECT_TRUE(IsInternalOutputName("LVDS"));
 128   EXPECT_TRUE(IsInternalOutputName("eDP"));
 129   EXPECT_TRUE(IsInternalOutputName("DSI"));
 130   EXPECT_TRUE(IsInternalOutputName("LVDSxx"));
 131   EXPECT_TRUE(IsInternalOutputName("eDPzz"));
 132   EXPECT_TRUE(IsInternalOutputName("DSIyy"));
 133
 134   EXPECT_FALSE(IsInternalOutputName("xyz"));
 135   EXPECT_FALSE(IsInternalOutputName("abcLVDS"));
 136   EXPECT_FALSE(IsInternalOutputName("cdeeDP"));
 137   EXPECT_FALSE(IsInternalOutputName("abcDSI"));
 138   EXPECT_FALSE(IsInternalOutputName("LVD"));
 139   EXPECT_FALSE(IsInternalOutputName("eD"));
 140   EXPECT_FALSE(IsInternalOutputName("DS"));
 141 }
 142
 143 }   // namespace chromeos