作者：菲斯可儿 | 来源：互联网 | 2023-09-23 11:40
1 查看手机CPU信息
cmd——adb shell——cd /proc------cat cpuinfo
2 获取cpu的是arm指令集，armv7指令集、还是neon指令集
/**
*
* [获取cpu类型和架构]
*
* @return
* 三个参数类型的数组，第一个参数标识是不是ARM架构，第二个参数标识是V6还是V7架构，第三个参数标识是不是neon指令集
*/
public static Object[] getCpuArchitecture() {
if ((Integer) mArmArchitecture[1] != -1) {
return mArmArchitecture;
}
try {
InputStream is = new FileInputStream("/proc/cpuinfo");
InputStreamReader ir = new InputStreamReader(is);
BufferedReader br = new BufferedReader(ir);
try {
String nameProcessor = "Processor";
String nameFeatures = "Features";
String nameModel = "model name";
String nameCpuFamily = "cpu family";
while (true) {
String line = br.readLine();
String[] pair = null;
if (line == null) {
break;
}
pair = line.split(":");
if (pair.length != 2)
continue;
String key = pair[0].trim();
String val = pair[1].trim();
if (key.compareTo(nameProcessor) == 0) {
String n = "";
for (int i = val.indexOf("ARMv") + 4; i
调用的该函数的示例方法
/*
* 获取FFpeg解码库的名称(如果是插件，会涉及到一个向下兼容的问题，例如：如果当前cpu是V7neo，而又没有neon的解码库，必须要做向下兼容出来
* ，如果有V7的库就加载V7的库，有V6的库就加载V6的)
*/
public static String getFFmpegLibName(Context context) {
if (LIB_FFMPEG_NAME != null) {
return LIB_FFMPEG_NAME;
}
Object[] arch = getCpuArchitecture();
String libDir = getNativeLibraryDir(context);
String libSysDir = "/system/lib";
if ("ARM".equals(arch[0])) {
try {
String ffmpeg = String.format("ffmpeg-%d%s", (Integer) arch[1], (String) arch[2]);
if (isFileExist(libDir + "/lib" + ffmpeg + ".so") || isFileExist(libSysDir + "/lib" + ffmpeg + ".so")) {
return ffmpeg;
} else {
boolean isV7NeOnCpu= "neon".equals(arch[2]);
boolean isV7 = ((Integer) arch[1]) == 7 && "".equals(arch[2]);
boolean isV6 = ((Integer) arch[1]) == 6;
if (isV7NeonCpu) {
if (isFileExist(libDir + "/libffmpeg-7neon.so")
|| isFileExist(libSysDir + "/libffmpeg-7neon.so")) {
LIB_FFMPEG_NAME = "ffmpeg-7neon";
return "ffmpeg-7neon";
} else if (isFileExist(libDir + "/libffmpeg-7.so")
|| isFileExist(libSysDir + "/libffmpeg-7.so")) {
LIB_FFMPEG_NAME = "ffmpeg-7";
return "ffmpeg-7";
} else if (isFileExist(libDir + "/libffmpeg-6.so")
|| isFileExist(libSysDir + "/libffmpeg-6.so")) {
LIB_FFMPEG_NAME = "ffmpeg-6";
return "ffmpeg-6";
}
} else if (isV7) {
if (isFileExist(libDir + "/libffmpeg-7.so") || isFileExist(libSysDir + "/libffmpeg-7.so")) {
LIB_FFMPEG_NAME = "ffmpeg-7";
return "ffmpeg-7";
} else if (isFileExist(libDir + "/libffmpeg-6.so")
|| isFileExist(libSysDir + "/libffmpeg-6.so")) {
LIB_FFMPEG_NAME = "ffmpeg-6";
return "ffmpeg-6";
}
} else if (isV6) {
if (isFileExist(libDir + "/libffmpeg-6.so") || isFileExist(libSysDir + "/libffmpeg-6.so")) {
LIB_FFMPEG_NAME = "ffmpeg-6";
return "ffmpeg-6";
}
}
}
} catch (Exception e) {
e.printStackTrace();
}
} else if ("INTEL".equals(arch[0])) {
if (isFileExist(libDir + "/libffmpeg-x86atom.so") || isFileExist(libSysDir + "/libffmpeg-x86atom.so")) {
LIB_FFMPEG_NAME = "ffmpeg-x86atom";
return "ffmpeg-x86atom";
}
}
LIB_FFMPEG_NAME = null;
return null;
}
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