blob: ba92d08cb5e13d541b404079bc7613b0a85785c4 (
plain)
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
|
/* -*- Mode: Java; c-basic-offset: 4; tab-width: 20; indent-tabs-mode: nil; -*-
* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
package org.mozilla.gecko.util;
import org.mozilla.gecko.AppConstants;
import org.mozilla.gecko.SysInfo;
import android.content.Context;
import android.content.pm.PackageManager;
import android.content.res.Configuration;
import android.os.Build;
import android.util.Log;
import android.view.ViewConfiguration;
public final class HardwareUtils {
private static final String LOGTAG = "GeckoHardwareUtils";
private static final boolean IS_AMAZON_DEVICE = Build.MANUFACTURER.equalsIgnoreCase("Amazon");
public static final boolean IS_KINDLE_DEVICE = IS_AMAZON_DEVICE &&
(Build.MODEL.equals("Kindle Fire") ||
Build.MODEL.startsWith("KF"));
private static volatile boolean sInited;
// These are all set once, during init.
private static volatile boolean sIsLargeTablet;
private static volatile boolean sIsSmallTablet;
private static volatile boolean sIsTelevision;
private HardwareUtils() {
}
public static void init(Context context) {
if (sInited) {
// This is unavoidable, given that HardwareUtils is called from background services.
Log.d(LOGTAG, "HardwareUtils already inited.");
return;
}
// Pre-populate common flags from the context.
final int screenLayoutSize = context.getResources().getConfiguration().screenLayout & Configuration.SCREENLAYOUT_SIZE_MASK;
if (Build.VERSION.SDK_INT >= 11) {
if (screenLayoutSize == Configuration.SCREENLAYOUT_SIZE_XLARGE) {
sIsLargeTablet = true;
} else if (screenLayoutSize == Configuration.SCREENLAYOUT_SIZE_LARGE) {
sIsSmallTablet = true;
}
if (Build.VERSION.SDK_INT >= 16) {
if (context.getPackageManager().hasSystemFeature(PackageManager.FEATURE_TELEVISION)) {
sIsTelevision = true;
}
}
}
sInited = true;
}
public static boolean isTablet() {
return sIsLargeTablet || sIsSmallTablet;
}
public static boolean isLargeTablet() {
return sIsLargeTablet;
}
public static boolean isSmallTablet() {
return sIsSmallTablet;
}
public static boolean isTelevision() {
return sIsTelevision;
}
public static int getMemSize() {
return SysInfo.getMemSize();
}
public static boolean isARMSystem() {
return Build.CPU_ABI != null && Build.CPU_ABI.equals("armeabi-v7a");
}
public static boolean isX86System() {
return Build.CPU_ABI != null && Build.CPU_ABI.equals("x86");
}
/**
* @return false if the current system is not supported (e.g. APK/system ABI mismatch).
*/
public static boolean isSupportedSystem() {
if (Build.VERSION.SDK_INT < AppConstants.Versions.MIN_SDK_VERSION ||
Build.VERSION.SDK_INT > AppConstants.Versions.MAX_SDK_VERSION) {
return false;
}
// See http://developer.android.com/ndk/guides/abis.html
final boolean isSystemARM = isARMSystem();
final boolean isSystemX86 = isX86System();
final boolean isAppARM = AppConstants.ANDROID_CPU_ARCH.startsWith("armeabi-v7a");
final boolean isAppX86 = AppConstants.ANDROID_CPU_ARCH.startsWith("x86");
// Only reject known incompatible ABIs. Better safe than sorry.
if ((isSystemX86 && isAppARM) || (isSystemARM && isAppX86)) {
return false;
}
if ((isSystemX86 && isAppX86) || (isSystemARM && isAppARM)) {
return true;
}
Log.w(LOGTAG, "Unknown app/system ABI combination: " + AppConstants.MOZ_APP_ABI + " / " + Build.CPU_ABI);
return true;
}
}
|
