class FileUtils
private static final String FFMPEG_FILE_NAME = "ffmpeg";
static File getFFmpeg(Context context) {
File folder = context.getFilesDir();
return new File(folder, FFMPEG_FILE_NAME);
}
class FFmpeg
public boolean isSupported() {
// check if arch is supported
CpuArch cpuArch = CpuArchHelper.getCpuArch();
if (cpuArch == CpuArch.NONE) {
Log.e("arch not supported");
return false;
}
// get ffmpeg file
File ffmpeg = FileUtils.getFFmpeg(context.provide());
SharedPreferences settings = context.provide().getSharedPreferences("ffmpeg_prefs", Context.MODE_PRIVATE);
int version = settings.getInt(KEY_PREF_VERSION, 0);
// check if ffmpeg file exists
if (!ffmpeg.exists() || version < VERSION) {
String prefix = "arm/";
if (cpuArch == CpuArch.x86) {
prefix = "x86/";
}
Log.d("file does not exist, creating it...");
try {
InputStream inputStream = context.provide().getAssets().open(prefix + "ffmpeg");
if (!FileUtils.inputStreamToFile(inputStream, ffmpeg)) {
return false;
}
Log.d("successfully wrote ffmpeg file!");
settings.edit().putInt(KEY_PREF_VERSION, VERSION).apply();
} catch (IOException e) {
Log.e("error while opening assets", e);
return false;
}
}
// check if ffmpeg can be executed
if (!ffmpeg.canExecute()) {
// try to make executable
try {
try {
Runtime.getRuntime().exec("chmod -R 777 " + ffmpeg.getAbsolutePath()).waitFor();
} catch (InterruptedException e) {
Log.e("interrupted exception", e);
return false;
} catch (IOException e) {
Log.e("io exception", e);
return false;
}
if (!ffmpeg.canExecute()) {
// our last hope!
if (!ffmpeg.setExecutable(true)) {
Log.e("unable to make executable");
return false;
}
}
} catch (SecurityException e) {
Log.e("security exception", e);
return false;
}
}
Log.d("ffmpeg is ready!");
return true;
}
