Example usage for android.hardware Camera release

Introduction

In this page you can find the example usage for android.hardware Camera release.

Prototype

public final void release() 

Source Link

Document

Disconnects and releases the Camera object resources.

Usage

From source file:com.ezartech.ezar.flashlight.Flashlight.java

private void updateLight(int newLightState, final CallbackContext callbackContext) {
    Camera releaseableCamera = null;

    try {//from w  w  w  . ja  v  a2s.co  m
        lightState = newLightState;

        if (localPreviewCamera == null) {
            localPreviewCamera = Camera.open(cameraId);
        }
        Parameters parameters;
        parameters = localPreviewCamera.getParameters();
        parameters.setFlashMode(
                newLightState == LIGHT_ON ? Parameters.FLASH_MODE_TORCH : Parameters.FLASH_MODE_OFF);
        localPreviewCamera.setParameters(parameters);

        if (localPreviewCamera != null) {
            if (newLightState == LIGHT_ON) {
                try {
                    localPreviewCamera.startPreview();
                    if (hiddenSurfaceTexture == null) {
                        hiddenSurfaceTexture = new SurfaceTexture(0);
                    }
                    localPreviewCamera.setPreviewTexture(hiddenSurfaceTexture);
                } catch (Exception ex) {
                    callbackContext.error("Unable to start light.");
                }
            } else {
                localPreviewCamera.stopPreview();
                releaseableCamera = localPreviewCamera;
                localPreviewCamera = null;
            }
        }

    } finally {
        if (releaseableCamera != null) {
            releaseableCamera.release();
        }
    }

    if (callbackContext != null) {
        callbackContext.success();
    }
}

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From source file:ca.nehil.rter.streamingapp.StreamingActivity.java

private Camera openCamera() {
    Log.d("CameraDebug", "openCamera");
    Camera cameraDevice = Camera.open();
    numberOfCameras = Camera.getNumberOfCameras();
    for (int i = 0; i < numberOfCameras && cameraDevice == null; i++) {
        Log.d("CameraDebug", "opening camera #" + String.valueOf(i));
        cameraDevice = Camera.open(i);//from   w ww  .  j  a  v  a2  s. com
    }
    try {
        if (cameraDevice == null) {
            throw new Exception("No camera device found");
        }
    } catch (Exception e) {
        Log.d("CameraDebug", "Released cam in openCamera, exception occured");
        cameraDevice.release();
        cameraDevice = null;
        Log.e("CameraDebug", e.getMessage());
        e.printStackTrace();
    }
    return cameraDevice;
}

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From source file:com.gsma.rcs.ri.sharing.video.OutgoingVideoSharing.java

/**
 * Check if good camera sizes are available for encoder. Must be used only before open camera.
 *
 * @param cameraId the camera ID//from   ww  w  .  j a  v  a 2s  . co  m
 * @return false if the camera don't have the good preview size for the encoder
 */
boolean checkCameraSize(CameraOptions cameraId) {
    boolean sizeAvailable = false;
    Camera camera = null;
    Method method = getCameraOpenMethod();
    if (method != null) {
        try {
            camera = (Camera) method.invoke(camera, new Object[] { cameraId.getValue() });
        } catch (Exception e) {
            camera = Camera.open();
        }
    } else {
        camera = Camera.open();
    }
    if (camera == null) {
        return false;

    }
    // Check common sizes
    Parameters param = camera.getParameters();
    List<Camera.Size> sizes = param.getSupportedPreviewSizes();
    for (Camera.Size size : sizes) {
        if ((size.width == H264Config.QVGA_WIDTH && size.height == H264Config.QVGA_HEIGHT)
                || (size.width == H264Config.CIF_WIDTH && size.height == H264Config.CIF_HEIGHT)
                || (size.width == H264Config.VGA_WIDTH && size.height == H264Config.VGA_HEIGHT)) {
            sizeAvailable = true;
            break;
        }
    }

    // Release camera
    camera.release();

    return sizeAvailable;
}

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From source file:org.uguess.android.sysinfo.SiragonManager.java

private String[] getSupportedOtherCamera(int cam) {
    Camera camera = Camera.open(cam);
    if (camera != null) {
        try {/*from w w  w .j  a v a  2s. c o m*/
            String[] stringList = new String[7];
            android.hardware.Camera.Parameters parameters = camera.getParameters();
            String values = "Focus mode: " + parameters.getFocusMode();
            stringList[0] = values;
            values = "Max Num Focus Areas: " + parameters.getMaxNumFocusAreas();
            stringList[1] = values;
            values = "Whitebalance Values: " + parameters.getSupportedWhiteBalance();
            stringList[2] = values;
            values = "Scene mode Values: " + parameters.getSupportedSceneModes();
            stringList[3] = values;
            values = "Effects Values: " + parameters.getSupportedColorEffects();
            stringList[4] = values;
            values = "Stabilization Video: " + parameters.getVideoStabilization();
            stringList[4] = values;
            values = "Quality JPEG: " + parameters.getJpegQuality();
            stringList[5] = values;
            values = "Quality Thumbnail: " + parameters.getJpegThumbnailQuality();
            stringList[6] = values;
            camera.release();
            return stringList;
        } catch (RuntimeException e) {
            e.printStackTrace();
        }
    }

    return null;
}

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From source file:org.uguess.android.sysinfo.SiragonManager.java

private String[] getSupportedPreviewSizesVideo(int cam) {
    float mp = 0, temp, height, width;
    Camera camera = Camera.open(cam);
    if (camera != null) {
        try {//from w  w  w  . ja  va2  s  .  co  m
            android.hardware.Camera.Parameters parameters = camera.getParameters();
            List<Camera.Size> values = parameters.getSupportedVideoSizes();
            List<String> valuessupport = new ArrayList<String>();

            for (int i = 0; i < values.size(); i++) {
                String strSize = String.valueOf(i) + " : " + String.valueOf(values.get(i).height) + " x "
                        + String.valueOf(values.get(i).width);
                valuessupport.add(strSize);
                if (i == 0) {
                    height = Float.parseFloat(String.valueOf(values.get(i).height));
                    width = Float.parseFloat(String.valueOf(values.get(i).width));
                    temp = ((height * width) / 1024000);
                    mp = temp;

                } else {
                    height = Float.parseFloat(String.valueOf(values.get(i).height));
                    width = Float.parseFloat(String.valueOf(values.get(i).width));
                    temp = ((height * width) / 1024000);
                    if (temp > mp) {
                        mp = temp;
                    }
                    if (i == values.size() - 1) {
                        //valuessupport.add(String.valueOf(mp)+" Megapixels");
                    }
                }
            }
            camera.release();
            Log.i("#######################################", String.valueOf(valuessupport));
            String[] stringList = valuessupport.toArray(new String[valuessupport.size()]);
            return stringList;
        } catch (RuntimeException e) {
            e.printStackTrace();
        }
    }

    return null;
}

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From source file:org.uguess.android.sysinfo.SiragonManager.java

@TargetApi(Build.VERSION_CODES.ECLAIR)
private String[] getSupportedPreviewSizes(int cam) {
    float mp = 0, temp, height, width;
    Camera camera = Camera.open(cam);
    if (camera != null) {
        try {//from   w  ww . j  a v a  2  s  . c  o  m
            android.hardware.Camera.Parameters parameters = camera.getParameters();
            List<Camera.Size> values = parameters.getSupportedPictureSizes();
            List<String> valuessupport = new ArrayList<String>();

            for (int i = 0; i < values.size(); i++) {
                String strSize = String.valueOf(i) + " : " + String.valueOf(values.get(i).height) + " x "
                        + String.valueOf(values.get(i).width);
                valuessupport.add(strSize);
                if (i == 0) {
                    height = Float.parseFloat(String.valueOf(values.get(i).height));
                    width = Float.parseFloat(String.valueOf(values.get(i).width));
                    temp = ((height * width) / 1024000);
                    mp = temp;

                } else {
                    height = Float.parseFloat(String.valueOf(values.get(i).height));
                    width = Float.parseFloat(String.valueOf(values.get(i).width));
                    temp = ((height * width) / 1024000);
                    if (temp > mp) {
                        mp = temp;
                    }
                    if (i == values.size() - 1) {
                        valuessupport.add(String.valueOf(mp) + " Megapixels");
                    }
                }
            }
            camera.release();
            Log.i("#######################################", String.valueOf(valuessupport));
            String[] stringList = valuessupport.toArray(new String[valuessupport.size()]);
            return stringList;
        } catch (RuntimeException e) {
            e.printStackTrace();
        }
    }

    return null;
}

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