RxJava style camera API for android, it based on android.hardware.camera
Add to your project dependence:
repositories {
jcenter()
}
dependencies {
compile 'com.ragnarok.rxcamera:lib:0.0.5'
}-
set the camera parameter by choose a RxCameraConfig, which created by RxCameraConfig.Builder:
RxCameraConfig config = new RxCameraConfig.Builder() .useBackCamera() .setAutoFocus(true) .setPreferPreviewFrameRate(15, 30) .setPreferPreviewSize(new Point(640, 480), false) .setHandleSurfaceEvent(true) .build();
for all camera config currently support, please see RxCameraConfig
-
open camera
RxCamera.open(context, config)
it return an RxJava Observable object, the type is
Observable<RxCamera> -
bind a
SurfaceVieworTextureViewand startPreviewsince
RxCamera.openis return an Observable, so you can chain the call like thisRxCamera.open(this, config).flatMap(new Func1<RxCamera, Observable<RxCamera>>() { @Override public Observable<RxCamera> call(RxCamera rxCamera) { return rxCamera.bindTexture(textureView); // or bind a SurfaceView: // rxCamera.bindSurface(SurfaceView) } }).flatMap(new Func1<RxCamera, Observable<RxCamera>>() { @Override public Observable<RxCamera> call(RxCamera rxCamera) { return rxCamera.startPreview(); } });
both
RxCamera.bindTextureandRxCamera.startPreviewwill return anObservable<RxCamera>objectPS: if set
isHandleSurfaceEventto true(set bysetHandleSurfaceEvent(true)inRxCameraConfigChooser), RxCamera will do the actual camera start preview action when the surface is available, otherwise it will start preview immediately, and may failed if surface is not available, in this case, the return Observable will callonError -
switch camera
switch the camera in runtime
camera.switchCamera();
and it will also change the internal camera config, so after switch camera, the
camera.getConfigwill return with new setting
RxCamera support many styles of camera data requests:
-
successiveDataRequest
camera.request().successiveDataRequest()
it will return the camera data infinitely
-
periodicDataRequest
camera.request().periodicDataRequest(1000)
as the name, it will return camera data periodic, pass the interval in millisecond
-
oneShotRequest
camera.request().oneShotRequest()
it will return the camera data only once
-
takePictureRequest
camera.request().takePictureRequest(boolean isContinuePreview, Func shutterAction, boolean openFlash)
the encapsulation of takePicture API, if
isContinuePreviewset to true, the RxCamera will try to restart preview after capture the picture, otherwise will behave as systemtakePicturecall, stop preview after captured successfullyand the
shutterActionwill called after picture just captured, like the [ShutterCallback] (http://developer.android.com/intl/es/reference/android/hardware/Camera.ShutterCallback.html) (actually it is called in the system shutterCallback)and the
openFlashif set to true, it will open the flash when taking picture, and automatically close it after this request -
FaceDetectionRequest
camera.request().faceDetectionRequest()
the encapsulation of
Camera.FaceDetectionListener, it will return the faces location inCameraData.faceList
All the data request will return an Observalbe<RxCameraData>
the RxCameraData contained these fields:
byte[] cameraData, the raw data of camera, for the takePicture request, it will return the jpeg encode byte, other request just return raw camera preview data, if you don't set preview format, the default is YUV420SPMatrix rotateMatrix, this matrix help you rotate the camera data in portraitCamera.Face[] faceList, the locatoin of faces, only returned in FaceDetectionRequest
the camera action request will change the behavior of the camera
-
zoom and somoothZoom action:
camera.action().zoom(int level) camera.action().smoothZoom(int level)
change the camera zoom level
-
open or close the flash
camera.action().flashAction(boolean isOn)
-
area focus and area metering
camera.action().areaFocusAction(List<Camera.Area> focusAreaList) camera.action().areaMeterAction(List<Camera.Area> focusAreaList)
and there is a helper function to convert the coordinate to [-1000, 1000], which is suitable for
Camera.Area, in CameraUtil:Rect transferCameraAreaFromOuterSize(Point center, Point outerSize, int size)
check out the example to see how to use this
This project still in very early stage, and welcome the pull request
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