void startPreview() {
mDisplayRotation = CameraUtil.getDisplayRotation(RegistCameraActivity.this);
mDisplayOrientation = CameraUtil.getDisplayOrientation(mDisplayRotation, CURRENT_CAMERA);
mCamera.setDisplayOrientation(mDisplayOrientation);
try {
mCamera.setPreviewDisplay(mSurfaceHolder);
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
mCamera.setPreviewCallback(RegistCameraActivity.this);
// mCamera.autoFocus(autoFocusCallback);
mCamera.startPreview();
}
void switchCamera() {
releaseCamera();
if (CURRENT_CAMERA == CameraInfo.CAMERA_FACING_FRONT) {
CURRENT_CAMERA = CameraInfo.CAMERA_FACING_BACK;
} else {
CURRENT_CAMERA = CameraInfo.CAMERA_FACING_FRONT;
}
mCamera = CameraUtil.getCameraInstance(CURRENT_CAMERA);
initCameraParameters();
startPreview();
}
void initCameraParameters() {
Camera.Parameters parameters = mCamera.getParameters();
parameters.setPictureFormat(ImageFormat.JPEG);
List<Camera.Size> previewSizes = parameters.getSupportedPreviewSizes();
// for(Size s:previewSizes){
// System.out.println("("+s.width+","+s.height+")");
// }
rate = CameraUtil.getScreenRate(RegistCameraActivity.this);
Size previewSize = CameraUtil.getPropPreviewSize(previewSizes, rate, 800);
parameters.setPreviewSize(previewSize.width, previewSize.height);
List<Camera.Size> pictureSizes = parameters.getSupportedPictureSizes();
Size pictureSize = CameraUtil.getPropPictureSize(pictureSizes, rate, 800);
parameters.setPictureSize(pictureSize.width, pictureSize.height);
if (CURRENT_CAMERA == CameraInfo.CAMERA_FACING_FRONT) {
mCameraOrientation = 270;
} else {
mCameraOrientation = 90;
}
parameters.setRotation(mCameraOrientation);
// parameters.setFocusMode(Parameters.FOCUS_MODE_CONTINUOUS_PICTURE);
mCamera.setParameters(parameters);
}
@Override
public void surfaceCreated(SurfaceHolder holder) {
if (mCamera == null) {
mCamera = CameraUtil.getCameraInstance(CURRENT_CAMERA);
if (mCamera != null) {
try {
mCamera.setPreviewDisplay(holder);
initCameraParameters();
} catch (IOException e) {
// TODO Auto-generated catch block
// e.printStackTrace();
showMessage("设置预览失败");
}
}
}
}
@Override
protected void onResume() {
// TODO Auto-generated method stub
super.onResume();
if (mCamera != null) {
releaseCamera();
initSurface();
} else {
initSurface();
if (mCamera == null) {
mCamera = CameraUtil.getCameraInstance(CURRENT_CAMERA);
if (mCamera != null) {
try {
mCamera.setPreviewDisplay(mSurfaceHolder);
initCameraParameters();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
}
startPreview();
}
}
void doFacedetect(byte[] data, Camera camera) {
long start = System.currentTimeMillis();
Bitmap bmp = CameraUtil.yuvimage2Bitmap(data, camera);
Matrix matrix = new Matrix();
matrix.postRotate(270);
matrix.postScale(-1, 1);
Bitmap tmp = Bitmap.createBitmap(bmp, 0, 0, bmp.getWidth(), bmp.getHeight(), matrix, true);
bmp.recycle();
DisplayMetrics dm = new DisplayMetrics();
getWindowManager().getDefaultDisplay().getMetrics(dm);
int heightScreen = dm.heightPixels;
int widthScreen = dm.widthPixels;
Bitmap tmp1 = Bitmap.createScaledBitmap(tmp, widthScreen, heightScreen, true);
tmp.recycle();
RectF rect = mFaceView.getRect();
Bitmap tmp2 =
Bitmap.createBitmap(
tmp1,
(int) rect.left,
(int) rect.top,
(int) (rect.right - rect.left),
(int) (rect.bottom - rect.top));
tmp1.recycle();
Bitmap picture = tmp2.copy(Bitmap.Config.RGB_565, true);
tmp2.recycle();
int N_MAX = 1;
FaceDetector faceDetector = new FaceDetector(picture.getWidth(), picture.getHeight(), N_MAX);
Face[] faces = new Face[N_MAX];
faceDetector.findFaces(picture, faces);
for (Face f : faces) {
try {
PointF midPoint = new PointF();
f.getMidPoint(midPoint);
if (f.confidence() < 0.4) return;
findFaceCount++;
mFaceView.setFaceParameters(midPoint, f.eyesDistance());
if (findFaceCount == 3) {
showCapture();
findFaceCount = 0;
}
if (modeSwitch.isChecked()) {
ByteArrayOutputStream out = new ByteArrayOutputStream();
picture.compress(CompressFormat.JPEG, 100, out);
byte[] picBytes = out.toByteArray();
Intent intent = new Intent(RegistCameraActivity.this, DisplayActivity_.class);
intent.putExtra("picture", picBytes);
intent.putExtra("isRegist", true);
intent.putExtra("auto", true);
intent.putExtra("currentCamera", CURRENT_CAMERA);
startActivity(intent);
}
// System.out.println("YOU:"+midPoint);
} catch (Exception e) {
// TODO Auto-generated catch block
// e.printStackTrace();
mFaceView.setFaceParameters(null, 0);
mFaceView.invalidate();
findFaceCount = 0;
} finally {
picture.recycle();
}
}
long end = System.currentTimeMillis();
System.out.println("耗时：" + (end - start) + " ms");
Timer timer = new Timer();
TimerTask task =
new TimerTask() {
@Override
public void run() {
clearEyeCircle();
}
};
timer.schedule(task, 200);
}