vitamio/src/io/vov/vitamio/utils/CPU.java
/*
* Copyright (C) 2012 YIXIA.COM
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package io.vov.vitamio.utils;
import java.io.BufferedReader;
import java.io.File;
import java.io.FileReader;
import java.io.IOException;
import java.util.HashMap;
import java.util.Map;
import android.os.Build;
import android.text.TextUtils;
public class CPU {
private static final Map<String, String> cpuinfo = new HashMap<String, String>();
private static int cachedFeature = -1;
private static String cachedFeatureString = null;
public static final int FEATURE_ARM_V5TE = 1 << 0;
public static final int FEATURE_ARM_V6 = 1 << 1;
public static final int FEATURE_ARM_VFP = 1 << 2;
public static final int FEATURE_ARM_V7A = 1 << 3;
public static final int FEATURE_ARM_VFPV3 = 1 << 4;
public static final int FEATURE_ARM_NEON = 1 << 5;
public static final int FEATURE_X86 = 1 << 6;
public static final int FEATURE_MIPS = 1 << 7;
public static String getFeatureString() {
getFeature();
return cachedFeatureString;
}
public static int getFeature() {
if (cachedFeature > 0)
return getCachedFeature();
cachedFeature = FEATURE_ARM_V5TE;
if (cpuinfo.isEmpty()) {
BufferedReader bis = null;
try {
bis = new BufferedReader(new FileReader(new File("/proc/cpuinfo")));
String line;
String[] pairs;
while ((line = bis.readLine()) != null) {
if (!line.trim().equals("")) {
pairs = line.split(":");
if (pairs.length > 1)
cpuinfo.put(pairs[0].trim(), pairs[1].trim());
}
}
} catch (Exception e) {
Log.e("getCPUFeature", e);
} finally {
try {
if (bis != null)
bis.close();
} catch (IOException e) {
Log.e("getCPUFeature", e);
}
}
}
if (!cpuinfo.isEmpty()) {
for (String key : cpuinfo.keySet())
Log.d("%s:%s", key, cpuinfo.get(key));
boolean hasARMv6 = false;
boolean hasARMv7 = false;
String val = cpuinfo.get("CPU architecture");
if (!TextUtils.isEmpty(val)) {
try {
int i = StringUtils.convertToInt(val);
Log.d("CPU architecture: %s", i);
if (i >= 7) {
hasARMv6 = true;
hasARMv7 = true;
} else if (i >= 6) {
hasARMv6 = true;
hasARMv7 = false;
}
} catch (NumberFormatException ex) {
Log.e("getCPUFeature", ex);
}
val = cpuinfo.get("Processor");
if (TextUtils.isEmpty(val)) {
val = cpuinfo.get("model name");
}
if (val != null && (val.contains("(v7l)") || val.contains("ARMv7"))) {
hasARMv6 = true;
hasARMv7 = true;
}
if (val != null && (val.contains("(v6l)") || val.contains("ARMv6"))) {
hasARMv6 = true;
hasARMv7 = false;
}
if (hasARMv6)
cachedFeature |= FEATURE_ARM_V6;
if (hasARMv7)
cachedFeature |= FEATURE_ARM_V7A;
val = cpuinfo.get("Features");
if (val != null) {
if (val.contains("neon"))
cachedFeature |= FEATURE_ARM_VFP | FEATURE_ARM_VFPV3 | FEATURE_ARM_NEON;
else if (val.contains("vfpv3"))
cachedFeature |= FEATURE_ARM_VFP | FEATURE_ARM_VFPV3;
else if (val.contains("vfp"))
cachedFeature |= FEATURE_ARM_VFP;
}
} else {
String vendor_id = cpuinfo.get("vendor_id");
String mips = cpuinfo.get("cpu model");
if (!TextUtils.isEmpty(vendor_id) && vendor_id.contains("GenuineIntel")) {
cachedFeature |= FEATURE_X86;
} else if (!TextUtils.isEmpty(mips) && mips.contains("MIPS")) {
cachedFeature |= FEATURE_MIPS;
}
}
}
return getCachedFeature();
}
private static int getCachedFeature() {
if (cachedFeatureString == null) {
StringBuffer sb = new StringBuffer();
if ((cachedFeature & FEATURE_ARM_V5TE) > 0)
sb.append("V5TE ");
if ((cachedFeature & FEATURE_ARM_V6) > 0)
sb.append("V6 ");
if ((cachedFeature & FEATURE_ARM_VFP) > 0)
sb.append("VFP ");
if ((cachedFeature & FEATURE_ARM_V7A) > 0)
sb.append("V7A ");
if ((cachedFeature & FEATURE_ARM_VFPV3) > 0)
sb.append("VFPV3 ");
if ((cachedFeature & FEATURE_ARM_NEON) > 0)
sb.append("NEON ");
if ((cachedFeature & FEATURE_X86) > 0)
sb.append("X86 ");
if ((cachedFeature & FEATURE_MIPS) > 0)
sb.append("MIPS ");
cachedFeatureString = sb.toString();
}
Log.d("GET CPU FATURE: %s", cachedFeatureString);
return cachedFeature;
}
public static boolean isDroidXDroid2() {
return (Build.MODEL.trim().equalsIgnoreCase("DROIDX") || Build.MODEL.trim().equalsIgnoreCase("DROID2") || Build.FINGERPRINT.toLowerCase().contains("shadow") || Build.FINGERPRINT.toLowerCase().contains("droid2"));
}
}