List of usage examples for android.media ImageReader setOnImageAvailableListener
public void setOnImageAvailableListener(OnImageAvailableListener listener, Handler handler)
From source file:MainActivity.java
protected void takePicture(View view) { if (null == mCameraDevice) { return;/*w ww.j a va 2 s . co m*/ } CameraManager manager = (CameraManager) getSystemService(Context.CAMERA_SERVICE); try { CameraCharacteristics characteristics = manager.getCameraCharacteristics(mCameraDevice.getId()); StreamConfigurationMap configurationMap = characteristics .get(CameraCharacteristics.SCALER_STREAM_CONFIGURATION_MAP); if (configurationMap == null) return; Size largest = Collections.max(Arrays.asList(configurationMap.getOutputSizes(ImageFormat.JPEG)), new CompareSizesByArea()); ImageReader reader = ImageReader.newInstance(largest.getWidth(), largest.getHeight(), ImageFormat.JPEG, 1); List<Surface> outputSurfaces = new ArrayList<Surface>(2); outputSurfaces.add(reader.getSurface()); outputSurfaces.add(new Surface(mTextureView.getSurfaceTexture())); final CaptureRequest.Builder captureBuilder = mCameraDevice .createCaptureRequest(CameraDevice.TEMPLATE_STILL_CAPTURE); captureBuilder.addTarget(reader.getSurface()); captureBuilder.set(CaptureRequest.CONTROL_MODE, CameraMetadata.CONTROL_MODE_AUTO); ImageReader.OnImageAvailableListener readerListener = new ImageReader.OnImageAvailableListener() { @Override public void onImageAvailable(ImageReader reader) { Image image = null; try { image = reader.acquireLatestImage(); ByteBuffer buffer = image.getPlanes()[0].getBuffer(); byte[] bytes = new byte[buffer.capacity()]; buffer.get(bytes); OutputStream output = new FileOutputStream(getPictureFile()); output.write(bytes); output.close(); } catch (FileNotFoundException e) { e.printStackTrace(); } catch (IOException e) { e.printStackTrace(); } finally { if (image != null) { image.close(); } } } }; HandlerThread thread = new HandlerThread("CameraPicture"); thread.start(); final Handler backgroudHandler = new Handler(thread.getLooper()); reader.setOnImageAvailableListener(readerListener, backgroudHandler); final CameraCaptureSession.CaptureCallback captureCallback = new CameraCaptureSession.CaptureCallback() { @Override public void onCaptureCompleted(CameraCaptureSession session, CaptureRequest request, TotalCaptureResult result) { super.onCaptureCompleted(session, request, result); Toast.makeText(MainActivity.this, "Picture Saved", Toast.LENGTH_SHORT).show(); startPreview(session); } }; mCameraDevice.createCaptureSession(outputSurfaces, new CameraCaptureSession.StateCallback() { @Override public void onConfigured(CameraCaptureSession session) { try { session.capture(captureBuilder.build(), captureCallback, backgroudHandler); } catch (CameraAccessException e) { e.printStackTrace(); } } @Override public void onConfigureFailed(CameraCaptureSession session) { } }, backgroudHandler); } catch (CameraAccessException e) { e.printStackTrace(); } }