Java Code Examples for android.hardware.Camera#setPreviewCallback()

The following examples show how to use android.hardware.Camera#setPreviewCallback() . You can vote up the ones you like or vote down the ones you don't like, and go to the original project or source file by following the links above each example. You may check out the related API usage on the sidebar.

Example 1

Source File: CameraTester.java From PermissionAgent with Apache License 2.0

6 votes

@Override
public boolean test() throws Throwable {
    Camera camera = null;
    try {
        camera = Camera.open();
        Camera.Parameters parameters = camera.getParameters();
        camera.setParameters(parameters);
        camera.setPreviewCallback(PREVIEW_CALLBACK);
        camera.startPreview();
        return true;
    } catch (Throwable e) {
        PackageManager packageManager = mContext.getPackageManager();
        return !packageManager.hasSystemFeature(PackageManager.FEATURE_CAMERA);
    } finally {
        if (camera != null) {
            camera.stopPreview();
            camera.setPreviewCallback(null);
            camera.release();
        }
    }
}

Example 2

Source File: CameraManager.java From Android with MIT License

6 votes

/**
 * Set the camera to camera (turn off the old camera, turn on the new camera)
 *
 * @param mCamera
 */
public Camera setChangeParameters(Activity activity, Camera mCamera, SurfaceHolder viewHolder) {
    if (Camera.getNumberOfCameras() <= 1) {
        return null;
    }
    try {
        mCamera.stopPreview();
        mCamera.setPreviewCallback(null);
        mCamera.release();
        cameraPosition = cameraPosition == 1 ? 0 : 1;
        Camera mNewCamera = getCameraInstance(cameraPosition);
        setParametersCamera(activity, mNewCamera);
        mNewCamera.setPreviewDisplay(viewHolder);
        mNewCamera.startPreview();
        return mNewCamera;
    } catch (Exception e) {
        e.printStackTrace();
    }
    return null;
}

Example 3

Source File: CodeScanner.java From code-scanner with MIT License

6 votes

private void stopPreviewInternal(final boolean internal) {
    try {
        final DecoderWrapper decoderWrapper = mDecoderWrapper;
        if (decoderWrapper != null) {
            final Camera camera = decoderWrapper.getCamera();
            camera.cancelAutoFocus();
            final Parameters parameters = camera.getParameters();
            if (!internal && decoderWrapper.isFlashSupported() && mFlashEnabled) {
                Utils.setFlashMode(parameters, Parameters.FLASH_MODE_OFF);
            }
            camera.setParameters(parameters);
            camera.setPreviewCallback(null);
            camera.stopPreview();
        }
    } catch (final Exception ignored) {
    }
    mStoppingPreview = false;
    mPreviewActive = false;
    mSafeAutoFocusing = false;
    mSafeAutoFocusAttemptsCount = 0;
}

Example 4

Source File: PreviewCallback.java From vmqApk with MIT License

5 votes

public void onPreviewFrame(byte[] data, Camera camera) {
  Point cameraResolution = configManager.getCameraResolution();
  if (!useOneShotPreviewCallback) {
    camera.setPreviewCallback(null);
  }
  if (previewHandler != null) {
    Message message = previewHandler.obtainMessage(previewMessage, cameraResolution.x,
        cameraResolution.y, data);
    message.sendToTarget();
    previewHandler = null;
  } else {
    Log.d(TAG, "Got preview callback, but no handler for it");
  }
}

Example 5

Source File: PreviewCallback.java From smart-farmer-android with Apache License 2.0

5 votes

public void onPreviewFrame(byte[] data, Camera camera) {
  Point cameraResolution = configManager.getCameraResolution();
  if (!useOneShotPreviewCallback) {
    camera.setPreviewCallback(null);
  }
  if (previewHandler != null) {
    Message message = previewHandler.obtainMessage(previewMessage, cameraResolution.x,
        cameraResolution.y, data);
    message.sendToTarget();
    previewHandler = null;
  } else {
    Log.d(TAG, "Got preview callback, but no handler for it");
  }
}

Example 6

Source File: PreviewCallback.java From QrModule with Apache License 2.0

5 votes

public void onPreviewFrame(byte[] data, Camera camera) {
    Point cameraResolution = configManager.getCameraResolution();
    if (!useOneShotPreviewCallback) {
        camera.setPreviewCallback(null);
    }
    if (previewHandler != null) {
        Message message = previewHandler.obtainMessage(previewMessage, cameraResolution.x,
                cameraResolution.y, data);
        message.sendToTarget();
        previewHandler = null;
    } else {
        Log.d(TAG, "Got preview callback, but no handler for it");
    }
}

Example 7

Source File: PreviewCallback.java From Mobike with Apache License 2.0

5 votes

public void onPreviewFrame(byte[] data, Camera camera) {
    Point cameraResolution = configManager.getCameraResolution();
    if (!useOneShotPreviewCallback) {
        camera.setPreviewCallback(null);
    }
    if (previewHandler != null) {
        Message message = previewHandler.obtainMessage(previewMessage, cameraResolution.x,
                cameraResolution.y, data);
        message.sendToTarget();
        previewHandler = null;
    } else {
        Log.d(TAG, "Got preview callback, but no handler for it");
    }
}

Example 8

Source File: PreviewCallback.java From o2oa with GNU Affero General Public License v3.0

5 votes

public void onPreviewFrame(byte[] data, Camera camera) {
  Point cameraResolution = configManager.getCameraResolution();
  if (!useOneShotPreviewCallback) {
    camera.setPreviewCallback(null);
  }
  if (previewHandler != null) {
    Message message = previewHandler.obtainMessage(previewMessage, cameraResolution.x,
        cameraResolution.y, data);
    message.sendToTarget();
    previewHandler = null;
  } else {
    Log.d(TAG, "Got preview callback, but no handler for it");
  }
}

Example 9

Source File: CodeScanner.java From code-scanner with MIT License

5 votes

private void startPreviewInternal(final boolean internal) {
    try {
        final DecoderWrapper decoderWrapper = mDecoderWrapper;
        if (decoderWrapper != null) {
            final Camera camera = decoderWrapper.getCamera();
            camera.setPreviewCallback(mPreviewCallback);
            camera.setPreviewDisplay(mSurfaceHolder);
            if (!internal && decoderWrapper.isFlashSupported() && mFlashEnabled) {
                setFlashEnabledInternal(true);
            }
            camera.startPreview();
            mStoppingPreview = false;
            mPreviewActive = true;
            mSafeAutoFocusing = false;
            mSafeAutoFocusAttemptsCount = 0;
            if (decoderWrapper.isAutoFocusSupported() && mAutoFocusEnabled) {
                final Rect frameRect = mScannerView.getFrameRect();
                if (frameRect != null) {
                    final Parameters parameters = camera.getParameters();
                    Utils.configureDefaultFocusArea(parameters, decoderWrapper, frameRect);
                    camera.setParameters(parameters);
                }
                if (mAutoFocusMode == AutoFocusMode.SAFE) {
                    scheduleSafeAutoFocusTask();
                }
            }
        }
    } catch (final Exception ignored) {
    }
}

Example 10

Source File: PreviewCallback.java From KSYMediaPlayer_Android with Apache License 2.0

5 votes

public void onPreviewFrame(byte[] data, Camera camera) {
  Point cameraResolution = configManager.getCameraResolution();
  if (!useOneShotPreviewCallback) {
    camera.setPreviewCallback(null);
  }
  if (previewHandler != null) {
    Message message = previewHandler.obtainMessage(previewMessage, cameraResolution.x,
        cameraResolution.y, data);
    message.sendToTarget();
    previewHandler = null;
  } else {
    Log.d(TAG, "Got preview callback, but no handler for it");
  }
}

Example 11

Source File: PreviewCallback.java From QrScan with Apache License 2.0

5 votes

public void onPreviewFrame(byte[] data, Camera camera) {
  Point cameraResolution = configManager.getCameraResolution();
  if (!useOneShotPreviewCallback) {
    camera.setPreviewCallback(null);
  }
  if (previewHandler != null) {
    Message message = previewHandler.obtainMessage(previewMessage, cameraResolution.x,
        cameraResolution.y, data);
    message.sendToTarget();
    previewHandler = null;
  } else {
    Log.d(TAG, "Got preview callback, but no handler for it");
  }
}

Example 12

Source File: PreviewCallback.java From MaterialHome with Apache License 2.0

5 votes

public void onPreviewFrame(byte[] data, Camera camera) {
  Point cameraResolution = configManager.getCameraResolution();
  if (!useOneShotPreviewCallback) {
    camera.setPreviewCallback(null);
  }
  if (previewHandler != null) {
    Message message = previewHandler.obtainMessage(previewMessage, cameraResolution.x,
        cameraResolution.y, data);
    message.sendToTarget();
    previewHandler = null;
  } else {
    Log.d(TAG, "Got preview callback, but no handler for it");
  }
}

Example 13

Source File: PreviewCallback.java From DoraemonKit with Apache License 2.0

5 votes

public void onPreviewFrame(byte[] data, Camera camera) {
    Point cameraResolution = configManager.getCameraResolution();
    if (!useOneShotPreviewCallback) {
        camera.setPreviewCallback(null);
    }
    if (previewHandler != null) {
        Message message = previewHandler.obtainMessage(previewMessage, cameraResolution.x,
                cameraResolution.y, data);
        message.sendToTarget();
        previewHandler = null;
    } else {
        Log.d(TAG, "Got preview callback, but no handler for it");
    }
}

Example 14

Source File: PreviewCallback.java From mobile-manager-tool with MIT License

5 votes

public void onPreviewFrame(byte[] data, Camera camera) {
  Point cameraResolution = configManager.getCameraResolution();
  if (!useOneShotPreviewCallback) {
    camera.setPreviewCallback(null);
  }
  if (previewHandler != null) {
    Message message = previewHandler.obtainMessage(previewMessage, cameraResolution.x,
        cameraResolution.y, data);
    message.sendToTarget();
    previewHandler = null;
  } else {
    Log.d(TAG, "Got preview callback, but no handler for it");
  }
}

Example 15

Source File: PreviewCallback.java From iscanner_android with MIT License

5 votes

public void onPreviewFrame(byte[] data, Camera camera) {
  Point cameraResolution = configManager.getCameraResolution();
  if (!useOneShotPreviewCallback) {
    camera.setPreviewCallback(null);
  }
  if (previewHandler != null) {
    Message message = previewHandler.obtainMessage(previewMessage, cameraResolution.x,
        cameraResolution.y, data);
    message.sendToTarget();
    previewHandler = null;
  } else {
    Log.d(TAG, "Got preview callback, but no handler for it");
  }
}

Example 16

Source File: PreviewCallback.java From QrCodeLib with MIT License

5 votes

public void onPreviewFrame(byte[] data, Camera camera) {
    Point cameraResolution = configManager.getCameraResolution();
    if (!useOneShotPreviewCallback) {
        camera.setPreviewCallback(null);
    }
    if (previewHandler != null) {
        Message message = previewHandler.obtainMessage(previewMessage, cameraResolution.x,
                cameraResolution.y, data);
        message.sendToTarget();
        previewHandler = null;
    } else {
        Log.d(TAG, "Got preview callback, but no handler for it");
    }
}

Example 17

Source File: CameraUtils5.java From CSipSimple with GNU General Public License v3.0

4 votes

@Override
public void setCallback(VideoCaptureAndroid captureAndroid, int numCaptureBuffers, int bufSize,
        Camera camera) {

    camera.setPreviewCallback(captureAndroid);
}

Example 18

Source File: QrCodeDecoder.java From Zom-Android-XMPP with GNU General Public License v3.0

4 votes

private void askForPreviewFrame(Camera camera) {
	if(!stopped) camera.setPreviewCallback(this);
}

Example 19

Source File: FaceTrackActivity.java From FaceDetect with Apache License 2.0

4 votes

@Override
    public void onPreviewFrame(final byte[] data, final Camera camera) {
        camera.setPreviewCallback(null);
        if (mCamera == null) return;
        detectHandler.post(new Runnable() {
            @Override
            public void run() {
                int is = 0;
                final byte[] ori = new byte[width * height];
                for (int x = width - 1; x >= 0; x--) {
                    for (int y = height - 1; y >= 0; y--) {
                        ori[is++] = data[y * width + x];
                    }
                }
                final FaceDetecter.Face[] faceinfo = facedetecter.findFaces(ori, height, width);
                runOnUiThread(new Runnable() {
                    @Override
                    public void run() {
                        fmMask.setFaceInfo(faceinfo);


                    }
                });


                try {
                    camera.setPreviewCallback(FaceTrackActivity.this);
                } catch (Exception e) {
                    e.printStackTrace();
                }

/*
                if (!consumeFaceInfo(ori,faceinfo)){
                    try {
                        camera.setPreviewCallback(FaceTrackActivity.this);
                    } catch (Exception e) {
                        e.printStackTrace();
                    }
                }else {
                  //  Toast.makeText(FaceTrackActivity.this,"consumed",Toast.LENGTH_SHORT).show();

                }*/

            }
        });
    }

Example 20

Source File: ICamera.java From MegviiFacepp-Android-SDK with Apache License 2.0

4 votes

public static ArrayList<HashMap<String, Integer>> getCameraPreviewSize(
		int cameraId) {
	ArrayList<HashMap<String, Integer>> size = new ArrayList<HashMap<String, Integer>>();
	Camera camera = null;
	try {
		camera = Camera.open(cameraId);
		if (camera == null)
			camera = Camera.open(0);

		List<Camera.Size> allSupportedSize = camera.getParameters()
				.getSupportedPreviewSizes();
		for (Camera.Size tmpSize : allSupportedSize) {
			if (tmpSize.width > tmpSize.height) {
				HashMap<String, Integer> map = new HashMap<String, Integer>();
                   map.put("width", tmpSize.width);
                   map.put("height", tmpSize.height);
                   if (tmpSize.width==640&&tmpSize.height==480){
                       size.add(map);
                   }
                   if (tmpSize.width==960&&tmpSize.height==540){
                       size.add(map);
                   }
                   if (tmpSize.width==1280&&tmpSize.height==720){
                       size.add(map);
                   }
                   if (tmpSize.width==1920&&tmpSize.height==1080){
                       size.add(map);
                   }

			}
		}

	} catch (Exception e) {
		e.printStackTrace();
	} finally {
		if (camera != null) {
			camera.stopPreview();
			camera.setPreviewCallback(null);
			camera.release();
			camera = null;
		}
	}

	return size;
}