/**
* Sets the desired width and height of the camera frames in pixels. If the exact desired values
* are not available options, the best matching available options are selected. Also, we try to
* select a preview size which corresponds to the aspect ratio of an associated full picture
* size, if applicable. Default: 1024x768.
*/
public Builder setRequestedPreviewSize(int width, int height) {
// Restrict the requested range to something within the realm of possibility. The
// choice of 1000000 is a bit arbitrary -- intended to be well beyond resolutions that
// devices can support. We bound this to avoid int overflow in the code later.
final int MAX = 1000000;
if ((width <= 0) || (width > MAX) || (height <= 0) || (height > MAX)) {
throw new IllegalArgumentException(
mCameraSource.mContext.getString(R.string.invalid_preview_size)
+ width
+ mCameraSource.mContext.getString(R.string.x)
+ height);
}
mCameraSource.mRequestedPreviewWidth = width;
mCameraSource.mRequestedPreviewHeight = height;
return this;
}
/**
* Sets the camera to use (either {@link #CAMERA_FACING_BACK} or {@link #CAMERA_FACING_FRONT}).
* Default: back facing.
*/
public Builder setFacing(int facing) {
if ((facing != CAMERA_FACING_BACK) && (facing != CAMERA_FACING_FRONT)) {
throw new IllegalArgumentException(
mCameraSource.mContext.getString(R.string.invalid_camera) + facing);
}
mCameraSource.mFacing = facing;
return this;
}
/**
* Sets the requested frame rate in frames per second. If the exact requested value is not not
* available, the best matching available value is selected. Default: 30.
*/
public Builder setRequestedFps(float fps) {
if (fps <= 0) {
throw new IllegalArgumentException(
mCameraSource.mContext.getString(R.string.invalid_fps) + fps);
}
mCameraSource.mRequestedFps = fps;
return this;
}
/**
* Creates a camera source builder with the supplied context and detector. Camera preview images
* will be streamed to the associated detector upon starting the camera source.
*/
public Builder(Context context, Detector<?> detector) {
if (context == null) {
throw new IllegalArgumentException(
"No context supplied."); // can't put it in string when context is null
}
if (detector == null) {
throw new IllegalArgumentException("No detector supplied.");
}
mDetector = detector;
mCameraSource.mContext = context;
}
/** Creates an instance of the camera source. */
public CameraSource build() {
mCameraSource.mFrameProcessor = mCameraSource.new FrameProcessingRunnable(mDetector);
return mCameraSource;
}
public Builder setFlashMode(@FlashMode String mode) {
mCameraSource.mFlashMode = mode;
return this;
}
public Builder setFocusMode(@FocusMode String mode) {
mCameraSource.mFocusMode = mode;
return this;
}