private void initCamera() {
if (!isPreview) {
camera = Camera.open();
}
if (camera != null && !isPreview) {
streamIt = new StreamIt();
try {
Camera.Parameters parameters = camera.getParameters();
parameters.setPreviewSize(screenWidth, screenHeight); // 设置预览照片的大小
parameters.setPreviewFpsRange(20, 30); // 每秒显示20~30帧
parameters.setPictureFormat(ImageFormat.NV21); // 设置图片格式
parameters.setPictureSize(screenWidth, screenHeight); // 设置照片的大小
camera.setPreviewDisplay(surfaceHolder); // 通过SurfaceView显示取景画面
camera.setPreviewCallback(streamIt); // 设置回调的类
camera.startPreview(); // 开始预览
camera.autoFocus(null); // 自动对焦
} catch (Exception e) {
e.printStackTrace();
}
isPreview = true;
Thread postThread2 = new Thread(new postThread());
postThread2.start();
System.out.println("线程启动了@@@@@@@@@@@@@@@@@@@@@@@@@@");
}
}
/** 给摄像头设置好一系列相关参数，并开始预览 */
private void initCamera() {
azLog.log("isPreView", "" + isPreview);
if (mCamera != null && !isPreview) {
try {
Camera.Parameters parameters = mCamera.getParameters();
// 设置预览照片的大小
parameters.setPreviewSize(mPreviewWidth, mPreviewHeight);
// 设置预览照片时每秒显示多少帧的最小值和最大值
parameters.setPreviewFpsRange(mFrameMin, mFrameMax);
// 设置图片格式
parameters.setPictureFormat(mImageFormat);
// 设置JPG照片的质量
parameters.set("jpeg-quality", mImageQuality);
// 设置照片的大小
parameters.setPictureSize(mPictureWidth, mPictureHeight);
// 通过SurfaceView显示取景画面
mCamera.setPreviewDisplay(mSurfaceHolder);
// 开始预览
mCamera.startPreview();
azLog.log("AzCamera", "摄像头打开");
} catch (IOException e) {
e.printStackTrace();
}
isPreview = true;
}
}
private void initPreview(int width, int height) {
if (camera != null && previewHolder.getSurface() != null) {
try {
camera.setPreviewDisplay(previewHolder);
} catch (Throwable t) {
}
if (!cameraConfigured) {
Camera.Parameters parameters = camera.getParameters();
Camera.Size size = getBestPreviewSize(width, height, parameters);
Camera.Size pictureSize = getLargestPictureSize(parameters);
if (size != null && pictureSize != null) {
if (parameters.getSupportedFocusModes().contains(Camera.Parameters.FOCUS_MODE_AUTO)) {
// set the focus mode
parameters.setFocusMode(Camera.Parameters.FOCUS_MODE_AUTO);
}
parameters.setPreviewSize(size.width, size.height);
parameters.setPictureSize(pictureSize.width, pictureSize.height);
parameters.setPictureFormat(ImageFormat.JPEG);
camera.setParameters(parameters);
cameraConfigured = true;
}
}
}
}
// 设置相机的属性 抓取图像
private void setCameraParameters() {
Camera.Parameters caParameters = camera.getParameters();
caParameters.setPictureFormat(ImageFormat.JPEG);
caParameters.setPreviewSize(400, 500);
caParameters.setFocusMode(Camera.Parameters.FOCUS_MODE_AUTO);
camera.autoFocus(
new Camera.AutoFocusCallback() {
@Override
public void onAutoFocus(boolean success, Camera camera) {
if (success) {
camera.takePicture(null, null, pictureCallback);
}
}
});
}
public void takePicture(final PictureTransaction xact) {
if (inPreview) {
if (isAutoFocusing) {
throw new IllegalStateException("Camera cannot take a picture while auto-focusing");
} else {
previewParams = camera.getParameters();
Camera.Parameters pictureParams = camera.getParameters();
Camera.Size pictureSize = xact.host.getPictureSize(xact, pictureParams);
pictureParams.setPictureSize(pictureSize.width, pictureSize.height);
pictureParams.setPictureFormat(ImageFormat.JPEG);
if (xact.flashMode != null) {
pictureParams.setFlashMode(xact.flashMode);
}
if (!onOrientationChange.isEnabled()) {
setCameraPictureOrientation(pictureParams);
}
camera.setParameters(xact.host.adjustPictureParameters(xact, pictureParams));
xact.cameraView = this;
postDelayed(
new Runnable() {
@Override
public void run() {
try {
camera.takePicture(xact, null, new PictureTransactionCallback(xact));
} catch (Exception e) {
android.util.Log.e(getClass().getSimpleName(), "Exception taking a picture", e);
// TODO get this out to library clients
}
}
},
xact.host.getDeviceProfile().getPictureDelay());
inPreview = false;
}
} else {
throw new IllegalStateException(
"Preview mode must have started before you can take a picture");
}
}
/** 开始预览 */
private void startPreview() {
mCamera = Camera.open();
// mCamera.lock();
// mCamera.l
Camera.Parameters parameters = mCamera.getParameters();
parameters.setPictureFormat(PixelFormat.JPEG);
parameters.setFlashMode(Camera.Parameters.FLASH_MODE_ON);
mCamera.setParameters(parameters);
mCamera.setDisplayOrientation(90);
try {
Log.v(DEBUG, "holder: " + mSurfaceHolder);
mCamera.setPreviewDisplay(mSurfaceHolder);
} catch (IOException e) {
e.printStackTrace();
Log.v(DEBUG, "exception occurs: " + e);
}
mCamera.startPreview();
}
public void surfaceChanged(SurfaceHolder holder, int format, int width, int height) {
Camera.Parameters parameters = camera.getParameters();
parameters.setPreviewSize(width, height);
parameters.setPictureFormat(PixelFormat.JPEG);
try {
String flash =
(String) Camera.Parameters.class.getField("FLASH_MODE_AUTO").get(parameters);
String focus =
(String) Camera.Parameters.class.getField("FOCUS_MODE_AUTO").get(parameters);
Method setFlash =
Camera.Parameters.class.getMethod("setFlashMode", new Class[] {String.class});
Method setFocus =
Camera.Parameters.class.getMethod("setFocusMode", new Class[] {String.class});
} catch (final Exception e) {
}
camera.setParameters(parameters);
camera.startPreview();
}
public void surfaceChanged(SurfaceHolder holder, int format, int width, int height) {
Log.d("surface", "surface change");
camera = Camera.open();
try {
Camera.Parameters parameters = camera.getParameters();
List<Camera.Size> previewSizes = parameters.getSupportedPreviewSizes();
Camera.Size pS = previewSizes.get(previewSizes.size() - 1);
parameters.setPictureFormat(PixelFormat.JPEG);
parameters.setPreviewSize(pS.width, pS.height);
camera.setParameters(parameters);
// 設置參數
camera.setPreviewDisplay(surfaceHolder);
// 鏡頭的方向和手機相差90度，所以要轉向
camera.setDisplayOrientation(90);
// 攝影頭畫面顯示在Surface上
camera.startPreview();
} catch (IOException e) {
e.printStackTrace();
}
}
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);
}
public void surfaceChanged(SurfaceHolder holder, int format, int width, int height) {
Log.i("TAG", "surfaceChanged");
// TODO Auto-generated method stub
Camera.Parameters parameters = mCamera.getParameters();
parameters.setFocusMode(Parameters.FOCUS_MODE_MACRO);
parameters.setPictureFormat(PixelFormat.JPEG); // 设置图片格式
// Camera.Size picSize = parameters.getSupportedPictureSizes().get(0);
// parameters.setPictureSize(picSize.width, picSize.height);
mCamera.setParameters(parameters);
List<Camera.Size> sizes = parameters.getSupportedPictureSizes();
mFrameWidth = width;
mFrameHeight = height;
// selecting optimal camera preview size
{
double minDiff = Double.MAX_VALUE;
for (Camera.Size size : sizes) {
if (Math.abs(size.height - height) < minDiff) {
mFrameWidth = size.width;
mFrameHeight = size.height;
Log.d(
"Size",
"width = "
+ Integer.toString(mFrameWidth)
+ "height = "
+ Integer.toString(mFrameHeight));
minDiff = Math.abs(size.height - height);
}
}
}
parameters.setPreviewSize(getFrameWidth(), getFrameHeight());
mCamera.setParameters(parameters);
mCamera.startPreview(); // 开始预览
}
public void surfaceCreated(SurfaceHolder holder) {
try {
// Attempt to open camera
_camera = Camera.open();
// Set desired camera parameters
Camera.Parameters p = _camera.getParameters();
p.setPictureFormat(ImageFormat.JPEG);
p.setPictureSize(_width, _height);
p.setJpegQuality(_quality);
_camera.setParameters(p);
} catch (RuntimeException e) {
Log.w(TAG, "Unable to connect to camera.", e);
// If opening the camera fails, return empty image and exit
final Intent intent = new Intent();
intent.setAction(PICTURE_INTENT);
intent.putExtra(IMAGE_EXTRA, new byte[0]);
sendBroadcast(intent);
setResult(RESULT_CANCELED, intent);
finish();
}
}
