diff options
Diffstat (limited to 'ui/display/edid_parser_unittest.cc')
| -rw-r--r-- | ui/display/edid_parser_unittest.cc | 231 |
1 files changed, 231 insertions, 0 deletions
diff --git a/ui/display/edid_parser_unittest.cc b/ui/display/edid_parser_unittest.cc new file mode 100644 index 0000000..8026df6 --- /dev/null +++ b/ui/display/edid_parser_unittest.cc @@ -0,0 +1,231 @@ +// Copyright 2014 The Chromium Authors. All rights reserved. +// Use of this source code is governed by a BSD-style license that can be +// found in the LICENSE file. + +#include "ui/display/edid_parser.h" + +#include "base/memory/scoped_ptr.h" +#include "testing/gtest/include/gtest/gtest.h" + +namespace ui { + +namespace { + +// Returns the number of characters in the string literal but doesn't count its +// terminator NULL byte. +#define charsize(str) (arraysize(str) - 1) + +// Sample EDID data extracted from real devices. +const unsigned char kNormalDisplay[] = + "\x00\xff\xff\xff\xff\xff\xff\x00\x22\xf0\x6c\x28\x01\x01\x01\x01" + "\x02\x16\x01\x04\xb5\x40\x28\x78\xe2\x8d\x85\xad\x4f\x35\xb1\x25" + "\x0e\x50\x54\x00\x00\x00\x01\x01\x01\x01\x01\x01\x01\x01\x01\x01" + "\x01\x01\x01\x01\x01\x01\xe2\x68\x00\xa0\xa0\x40\x2e\x60\x30\x20" + "\x36\x00\x81\x90\x21\x00\x00\x1a\xbc\x1b\x00\xa0\x50\x20\x17\x30" + "\x30\x20\x36\x00\x81\x90\x21\x00\x00\x1a\x00\x00\x00\xfc\x00\x48" + "\x50\x20\x5a\x52\x33\x30\x77\x0a\x20\x20\x20\x20\x00\x00\x00\xff" + "\x00\x43\x4e\x34\x32\x30\x32\x31\x33\x37\x51\x0a\x20\x20\x00\x71"; + +const unsigned char kInternalDisplay[] = + "\x00\xff\xff\xff\xff\xff\xff\x00\x4c\xa3\x42\x31\x00\x00\x00\x00" + "\x00\x15\x01\x03\x80\x1a\x10\x78\x0a\xd3\xe5\x95\x5c\x60\x90\x27" + "\x19\x50\x54\x00\x00\x00\x01\x01\x01\x01\x01\x01\x01\x01\x01\x01" + "\x01\x01\x01\x01\x01\x01\x9e\x1b\x00\xa0\x50\x20\x12\x30\x10\x30" + "\x13\x00\x05\xa3\x10\x00\x00\x19\x00\x00\x00\x0f\x00\x00\x00\x00" + "\x00\x00\x00\x00\x00\x23\x87\x02\x64\x00\x00\x00\x00\xfe\x00\x53" + "\x41\x4d\x53\x55\x4e\x47\x0a\x20\x20\x20\x20\x20\x00\x00\x00\xfe" + "\x00\x31\x32\x31\x41\x54\x31\x31\x2d\x38\x30\x31\x0a\x20\x00\x45"; + +const unsigned char kOverscanDisplay[] = + "\x00\xff\xff\xff\xff\xff\xff\x00\x4c\x2d\xfe\x08\x00\x00\x00\x00" + "\x29\x15\x01\x03\x80\x10\x09\x78\x0a\xee\x91\xa3\x54\x4c\x99\x26" + "\x0f\x50\x54\xbd\xef\x80\x71\x4f\x81\xc0\x81\x00\x81\x80\x95\x00" + "\xa9\xc0\xb3\x00\x01\x01\x02\x3a\x80\x18\x71\x38\x2d\x40\x58\x2c" + "\x45\x00\xa0\x5a\x00\x00\x00\x1e\x66\x21\x56\xaa\x51\x00\x1e\x30" + "\x46\x8f\x33\x00\xa0\x5a\x00\x00\x00\x1e\x00\x00\x00\xfd\x00\x18" + "\x4b\x0f\x51\x17\x00\x0a\x20\x20\x20\x20\x20\x20\x00\x00\x00\xfc" + "\x00\x53\x41\x4d\x53\x55\x4e\x47\x0a\x20\x20\x20\x20\x20\x01\x1d" + "\x02\x03\x1f\xf1\x47\x90\x04\x05\x03\x20\x22\x07\x23\x09\x07\x07" + "\x83\x01\x00\x00\xe2\x00\x0f\x67\x03\x0c\x00\x20\x00\xb8\x2d\x01" + "\x1d\x80\x18\x71\x1c\x16\x20\x58\x2c\x25\x00\xa0\x5a\x00\x00\x00" + "\x9e\x01\x1d\x00\x72\x51\xd0\x1e\x20\x6e\x28\x55\x00\xa0\x5a\x00" + "\x00\x00\x1e\x8c\x0a\xd0\x8a\x20\xe0\x2d\x10\x10\x3e\x96\x00\xa0" + "\x5a\x00\x00\x00\x18\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" + "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" + "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\xc6"; + +// The EDID info misdetecting overscan once. see crbug.com/226318 +const unsigned char kMisdetectedDisplay[] = + "\x00\xff\xff\xff\xff\xff\xff\x00\x10\xac\x64\x40\x4c\x30\x30\x32" + "\x0c\x15\x01\x03\x80\x40\x28\x78\xea\x8d\x85\xad\x4f\x35\xb1\x25" + "\x0e\x50\x54\xa5\x4b\x00\x71\x4f\x81\x00\x81\x80\xd1\x00\xa9\x40" + "\x01\x01\x01\x01\x01\x01\x28\x3c\x80\xa0\x70\xb0\x23\x40\x30\x20" + "\x36\x00\x81\x91\x21\x00\x00\x1a\x00\x00\x00\xff\x00\x50\x48\x35" + "\x4e\x59\x31\x33\x4e\x32\x30\x30\x4c\x0a\x00\x00\x00\xfc\x00\x44" + "\x45\x4c\x4c\x20\x55\x33\x30\x31\x31\x0a\x20\x20\x00\x00\x00\xfd" + "\x00\x31\x56\x1d\x5e\x12\x00\x0a\x20\x20\x20\x20\x20\x20\x01\x38" + "\x02\x03\x29\xf1\x50\x90\x05\x04\x03\x02\x07\x16\x01\x06\x11\x12" + "\x15\x13\x14\x1f\x20\x23\x0d\x7f\x07\x83\x0f\x00\x00\x67\x03\x0c" + "\x00\x10\x00\x38\x2d\xe3\x05\x03\x01\x02\x3a\x80\x18\x71\x38\x2d" + "\x40\x58\x2c\x45\x00\x81\x91\x21\x00\x00\x1e\x01\x1d\x80\x18\x71" + "\x1c\x16\x20\x58\x2c\x25\x00\x81\x91\x21\x00\x00\x9e\x01\x1d\x00" + "\x72\x51\xd0\x1e\x20\x6e\x28\x55\x00\x81\x91\x21\x00\x00\x1e\x8c" + "\x0a\xd0\x8a\x20\xe0\x2d\x10\x10\x3e\x96\x00\x81\x91\x21\x00\x00" + "\x18\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x94"; + +const unsigned char kLP2565A[] = + "\x00\xFF\xFF\xFF\xFF\xFF\xFF\x00\x22\xF0\x76\x26\x01\x01\x01\x01" + "\x02\x12\x01\x03\x80\x34\x21\x78\xEE\xEF\x95\xA3\x54\x4C\x9B\x26" + "\x0F\x50\x54\xA5\x6B\x80\x81\x40\x81\x80\x81\x99\x71\x00\xA9\x00" + "\xA9\x40\xB3\x00\xD1\x00\x28\x3C\x80\xA0\x70\xB0\x23\x40\x30\x20" + "\x36\x00\x07\x44\x21\x00\x00\x1A\x00\x00\x00\xFD\x00\x30\x55\x1E" + "\x5E\x11\x00\x0A\x20\x20\x20\x20\x20\x20\x00\x00\x00\xFC\x00\x48" + "\x50\x20\x4C\x50\x32\x34\x36\x35\x0A\x20\x20\x20\x00\x00\x00\xFF" + "\x00\x43\x4E\x4B\x38\x30\x32\x30\x34\x48\x4D\x0A\x20\x20\x00\xA4"; + +const unsigned char kLP2565B[] = + "\x00\xFF\xFF\xFF\xFF\xFF\xFF\x00\x22\xF0\x75\x26\x01\x01\x01\x01" + "\x02\x12\x01\x03\x6E\x34\x21\x78\xEE\xEF\x95\xA3\x54\x4C\x9B\x26" + "\x0F\x50\x54\xA5\x6B\x80\x81\x40\x71\x00\xA9\x00\xA9\x40\xA9\x4F" + "\xB3\x00\xD1\xC0\xD1\x00\x28\x3C\x80\xA0\x70\xB0\x23\x40\x30\x20" + "\x36\x00\x07\x44\x21\x00\x00\x1A\x00\x00\x00\xFD\x00\x30\x55\x1E" + "\x5E\x15\x00\x0A\x20\x20\x20\x20\x20\x20\x00\x00\x00\xFC\x00\x48" + "\x50\x20\x4C\x50\x32\x34\x36\x35\x0A\x20\x20\x20\x00\x00\x00\xFF" + "\x00\x43\x4E\x4B\x38\x30\x32\x30\x34\x48\x4D\x0A\x20\x20\x00\x45"; + +} // namespace + +TEST(EDIDParserTest, ParseOverscanFlag) { + bool flag = false; + EXPECT_FALSE( + ParseOutputOverscanFlag(kNormalDisplay, charsize(kNormalDisplay), &flag)); + + flag = false; + EXPECT_FALSE(ParseOutputOverscanFlag( + kInternalDisplay, charsize(kInternalDisplay), &flag)); + + flag = false; + EXPECT_TRUE(ParseOutputOverscanFlag( + kOverscanDisplay, charsize(kOverscanDisplay), &flag)); + EXPECT_TRUE(flag); + + flag = false; + EXPECT_FALSE(ParseOutputOverscanFlag( + kMisdetectedDisplay, charsize(kMisdetectedDisplay), &flag)); + + flag = false; + // Copy |kOverscanDisplay| and set flags to false in it. The overscan flags + // are embedded at byte 150 in this specific example. Fix here too when the + // contents of kOverscanDisplay is altered. + std::string display_data(reinterpret_cast<const char*>(kOverscanDisplay), + charsize(kOverscanDisplay)); + display_data[150] = '\0'; + EXPECT_TRUE(ParseOutputOverscanFlag( + reinterpret_cast<const unsigned char*>(display_data.data()), + display_data.size(), + &flag)); + EXPECT_FALSE(flag); +} + +TEST(EDIDParserTest, ParseBrokenOverscanData) { + // Do not fill valid data here because it anyway fails to parse the data. + scoped_ptr<unsigned char[]> data(new unsigned char[126]); + bool flag = false; + EXPECT_FALSE(ParseOutputOverscanFlag(data.get(), 0, &flag)); + EXPECT_FALSE(ParseOutputOverscanFlag(data.get(), 126, &flag)); + + // extending data because ParseOutputOverscanFlag() will access the data. + data.reset(new unsigned char[150]); + // The number of CEA extensions is stored at byte 126. + data[126] = '\x01'; + EXPECT_FALSE(ParseOutputOverscanFlag(data.get(), 128, &flag)); + EXPECT_FALSE(ParseOutputOverscanFlag(data.get(), 150, &flag)); +} + +TEST(EDIDParserTest, ParseEDID) { + uint16 manufacturer_id = 0; + std::string human_readable_name; + EXPECT_TRUE(ParseOutputDeviceData( + kNormalDisplay, charsize(kNormalDisplay), + &manufacturer_id, &human_readable_name)); + EXPECT_EQ(0x22f0u, manufacturer_id); + EXPECT_EQ("HP ZR30w", human_readable_name); + + manufacturer_id = 0; + human_readable_name.clear(); + EXPECT_TRUE(ParseOutputDeviceData( + kInternalDisplay, charsize(kInternalDisplay), + &manufacturer_id, NULL)); + EXPECT_EQ(0x4ca3u, manufacturer_id); + EXPECT_EQ("", human_readable_name); + + // Internal display doesn't have name. + EXPECT_TRUE(ParseOutputDeviceData( + kInternalDisplay, charsize(kInternalDisplay), + NULL, &human_readable_name)); + EXPECT_TRUE(human_readable_name.empty()); + + manufacturer_id = 0; + human_readable_name.clear(); + EXPECT_TRUE(ParseOutputDeviceData( + kOverscanDisplay, charsize(kOverscanDisplay), + &manufacturer_id, &human_readable_name)); + EXPECT_EQ(0x4c2du, manufacturer_id); + EXPECT_EQ("SAMSUNG", human_readable_name); +} + +TEST(EDIDParserTest, ParseBrokenEDID) { + uint16 manufacturer_id = 0; + std::string human_readable_name; + + // length == 0 + EXPECT_FALSE(ParseOutputDeviceData( + kNormalDisplay, 0, + &manufacturer_id, &human_readable_name)); + + // name is broken. Copying kNormalDisplay and substitute its name data by + // some control code. + std::string display_data( + reinterpret_cast<const char*>(kNormalDisplay), charsize(kNormalDisplay)); + + // display's name data is embedded in byte 95-107 in this specific example. + // Fix here too when the contents of kNormalDisplay is altered. + display_data[97] = '\x1b'; + EXPECT_FALSE(ParseOutputDeviceData( + reinterpret_cast<const unsigned char*>(display_data.data()), + display_data.size(), + &manufacturer_id, &human_readable_name)); + + // If |human_readable_name| isn't specified, it skips parsing the name. + manufacturer_id = 0; + EXPECT_TRUE(ParseOutputDeviceData( + reinterpret_cast<const unsigned char*>(display_data.data()), + display_data.size(), + &manufacturer_id, NULL)); + EXPECT_EQ(0x22f0u, manufacturer_id); +} + +TEST(EDIDParserTest, GetDisplayId) { + // EDID of kLP2565A and B are slightly different but actually the same device. + int64 id1 = -1; + int64 id2 = -1; + EXPECT_TRUE(GetDisplayIdFromEDID(kLP2565A, charsize(kLP2565A), 0, &id1)); + EXPECT_TRUE(GetDisplayIdFromEDID(kLP2565B, charsize(kLP2565B), 0, &id2)); + EXPECT_EQ(id1, id2); + EXPECT_NE(-1, id1); +} + +TEST(EDIDParserTest, GetDisplayIdFromInternal) { + int64 id = -1; + EXPECT_TRUE(GetDisplayIdFromEDID( + kInternalDisplay, charsize(kInternalDisplay), 0, &id)); + EXPECT_NE(-1, id); +} + +TEST(EDIDParserTest, GetDisplayIdFailure) { + int64 id = -1; + EXPECT_FALSE(GetDisplayIdFromEDID(NULL, 0, 0, &id)); + EXPECT_EQ(-1, id); +} + +} // namespace ui |