Example usage for android.hardware.camera2 CameraMetadata CONTROL_AF_TRIGGER

Introduction

In this page you can find the example usage for android.hardware.camera2 CameraMetadata CONTROL_AF_TRIGGER_START.

Prototype

int CONTROL_AF_TRIGGER_START

To view the source code for android.hardware.camera2 CameraMetadata CONTROL_AF_TRIGGER_START.

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Document

Autofocus will trigger now.

Usage

From source file:com.dastanapps.camera2.view.Cam2AutoFitTextureView.java

@Nullable
private Boolean touchTofocus2(MotionEvent event) {
    MotionEvent motionEvent = event;/*from w w w.  j  av a 2  s .c  o  m*/
    final int actionMasked = motionEvent.getActionMasked();
    if (actionMasked != MotionEvent.ACTION_DOWN) {
        return false;
    }
    if (mManualFocusEngaged) {
        Log.d(TAG, "Manual focus already engaged");
        return true;
    }

    final Rect sensorArraySize = mCharacteristics.get(CameraCharacteristics.SENSOR_INFO_ACTIVE_ARRAY_SIZE);

    //TODO: here I just flip x,y, but this needs to correspond with the sensor orientation (via SENSOR_ORIENTATION)
    final int y = (int) ((motionEvent.getX() / (float) getWidth()) * (float) sensorArraySize.height());
    final int x = (int) ((motionEvent.getY() / (float) getHeight()) * (float) sensorArraySize.width());
    final int halfTouchWidth = 150; //(int)motionEvent.getTouchMajor(); //TODO: this doesn't represent actual touch size in pixel. Values range in [3, 10]...
    final int halfTouchHeight = 150; //(int)motionEvent.getTouchMinor();
    MeteringRectangle focusAreaTouch = new MeteringRectangle(Math.max(x - halfTouchWidth, 0),
            Math.max(y - halfTouchHeight, 0), halfTouchWidth * 2, halfTouchHeight * 2,
            MeteringRectangle.METERING_WEIGHT_MAX - 1);

    CameraCaptureSession.CaptureCallback captureCallbackHandler = new CameraCaptureSession.CaptureCallback() {
        @Override
        public void onCaptureCompleted(CameraCaptureSession session, CaptureRequest request,
                TotalCaptureResult result) {
            super.onCaptureCompleted(session, request, result);
            mManualFocusEngaged = false;

            if (request.getTag() == "FOCUS_TAG") {
                //the focus trigger is complete -
                //resume repeating (preview surface will get frames), clear AF trigger
                mPreviewBuilder.set(CaptureRequest.CONTROL_AF_TRIGGER, null);
                try {
                    mPreviewSession.setRepeatingRequest(mPreviewBuilder.build(), null, null);
                } catch (CameraAccessException e) {
                    e.printStackTrace();
                }
            }
        }

        @Override
        public void onCaptureFailed(CameraCaptureSession session, CaptureRequest request,
                CaptureFailure failure) {
            super.onCaptureFailed(session, request, failure);
            Log.e(TAG, "Manual AF failure: " + failure);
            mManualFocusEngaged = false;
        }
    };

    //first stop the existing repeating request
    try {
        mPreviewSession.stopRepeating();
    } catch (CameraAccessException e) {
        e.printStackTrace();
    }

    //cancel any existing AF trigger (repeated touches, etc.)
    mPreviewBuilder.set(CaptureRequest.CONTROL_AF_TRIGGER, CameraMetadata.CONTROL_AF_TRIGGER_CANCEL);
    mPreviewBuilder.set(CaptureRequest.CONTROL_AF_MODE, CaptureRequest.CONTROL_AF_MODE_OFF);
    try {
        mPreviewSession.capture(mPreviewBuilder.build(), captureCallbackHandler, null);
    } catch (CameraAccessException e) {
        e.printStackTrace();
    }

    //Now add a new AF trigger with focus region
    if (isMeteringAreaAFSupported()) {
        mPreviewBuilder.set(CaptureRequest.CONTROL_AF_REGIONS, new MeteringRectangle[] { focusAreaTouch });
    }
    mPreviewBuilder.set(CaptureRequest.CONTROL_MODE, CameraMetadata.CONTROL_MODE_AUTO);
    mPreviewBuilder.set(CaptureRequest.CONTROL_AF_MODE, CaptureRequest.CONTROL_AF_MODE_AUTO);
    mPreviewBuilder.set(CaptureRequest.CONTROL_AF_TRIGGER, CameraMetadata.CONTROL_AF_TRIGGER_START);
    mPreviewBuilder.setTag("FOCUS_TAG"); //we'll capture this later for resuming the preview

    //            //then we ask for a single request (not repeating!)
    //            mPreviewSession.capture(mPreviewBuilder.build(), captureCallbackHandler, mBackgroundHandler);
    return null;
}

From source file:com.dastanapps.camera2.view.Cam2AutoFitTextureView.java

protected void touchToFocus(MotionEvent event) {
    //first stop the existing repeating request
    try {/* ww w  . j  av a2s .  c o m*/
        mPreviewSession.stopRepeating();
    } catch (CameraAccessException e) {
        e.printStackTrace();
    }
    Rect rect = mCharacteristics.get(CameraCharacteristics.SENSOR_INFO_ACTIVE_ARRAY_SIZE);
    Log.i(TAG, "SENSOR_INFO_ACTIVE_ARRAY_SIZE,,,,,,,,rect.left--->" + rect.left + ",,,rect.top--->" + rect.top
            + ",,,,rect.right--->" + rect.right + ",,,,rect.bottom---->" + rect.bottom);
    Size size = mCharacteristics.get(CameraCharacteristics.SENSOR_INFO_PIXEL_ARRAY_SIZE);
    Log.i(TAG, "mCameraCharacteristics,,,,size.getWidth()--->" + size.getWidth() + ",,,size.getHeight()--->"
            + size.getHeight());
    int areaSize = 200;
    int right = rect.right;
    int bottom = rect.bottom;
    int viewWidth = getWidth();
    int viewHeight = getHeight();
    int ll, rr;
    Rect newRect;
    int centerX = (int) event.getX();
    int centerY = (int) event.getY();
    ll = ((centerX * right) - areaSize) / viewWidth;
    rr = ((centerY * bottom) - areaSize) / viewHeight;
    int focusLeft = clamp(ll, 0, right);
    int focusBottom = clamp(rr, 0, bottom);
    Log.i(TAG, "focusLeft--->" + focusLeft + ",,,focusTop--->" + focusBottom + ",,,focusRight--->"
            + (focusLeft + areaSize) + ",,,focusBottom--->" + (focusBottom + areaSize));
    newRect = new Rect(focusLeft, focusBottom, focusLeft + areaSize, focusBottom + areaSize);
    MeteringRectangle meteringRectangle = new MeteringRectangle(newRect, 500);
    MeteringRectangle[] meteringRectangleArr = { meteringRectangle };
    mPreviewBuilder.set(CaptureRequest.CONTROL_AF_TRIGGER, CameraMetadata.CONTROL_AF_TRIGGER_CANCEL);
    mPreviewBuilder.set(CaptureRequest.CONTROL_AF_REGIONS, meteringRectangleArr);
    mPreviewBuilder.set(CaptureRequest.CONTROL_AF_MODE, CaptureRequest.CONTROL_AF_MODE_AUTO);
    mPreviewBuilder.set(CaptureRequest.CONTROL_AF_TRIGGER, CameraMetadata.CONTROL_AF_TRIGGER_START);
}

From source file:com.example.camera2apidemo.Camera2Fragment.java

private void lockFocus() {
    try {/*from   w w w  .  j a va2s . co  m*/
        mPreviewRequestBuilder.set(CaptureRequest.CONTROL_AF_TRIGGER, CameraMetadata.CONTROL_AF_TRIGGER_START);

        CameraCaptureSession.CaptureCallback mLockFocusCallback = new CameraCaptureSession.CaptureCallback() {

            @Override
            public void onCaptureCompleted(@NonNull CameraCaptureSession session,
                    @NonNull CaptureRequest request, @NonNull TotalCaptureResult result) {

                Integer afState = result.get(CaptureResult.CONTROL_AF_STATE);
                if (CaptureResult.CONTROL_AF_STATE_FOCUSED_LOCKED == afState
                        || CaptureResult.CONTROL_AF_STATE_NOT_FOCUSED_LOCKED == afState) {
                    Integer aeState = result.get(CaptureResult.CONTROL_AE_STATE);
                    if (aeState == CaptureResult.CONTROL_AE_STATE_CONVERGED) {
                        captureStillPicture();
                    } else {
                        runPrecaptureSequence();
                    }
                }
            }
        };

        mState = STATE_WAITING_LOCK;
        mCaptureSession.capture(mPreviewRequestBuilder.build(), mLockFocusCallback, mBackgroundHandler);

    } catch (CameraAccessException e) {
        e.printStackTrace();
    }
}

From source file:com.example.testcamera.Camera2BasicFragmentGoogle.java

/**
 * Lock the focus as the first step for a still image capture.
 */// w  w w .j  a v  a  2  s .c o m
private void lockFocus() {
    try {
        // This is how to tell the camera to lock focus.
        mPreviewRequestBuilder.set(CaptureRequest.CONTROL_AF_TRIGGER, CameraMetadata.CONTROL_AF_TRIGGER_START);
        // Tell #mCaptureCallback to wait for the lock.
        mState = STATE_WAITING_LOCK;
        mCaptureSession.setRepeatingRequest(mPreviewRequestBuilder.build(), mCaptureCallback,
                mBackgroundHandler);
    } catch (CameraAccessException e) {
        e.printStackTrace();
    }
}

From source file:com.example.android.learnmore.Camera2BasicFragment.java

private void lockFocus() {
    try {//w  w  w.  j av  a2 s.  co m
        // This is how to tell the camera to lock focus.
        mPreviewRequestBuilder.set(CaptureRequest.CONTROL_AF_TRIGGER, CameraMetadata.CONTROL_AF_TRIGGER_START);
        // Tell #mCaptureCallback to wait for the lock.
        mState = STATE_WAITING_LOCK;
        mCaptureSession.capture(mPreviewRequestBuilder.build(), mCaptureCallback, mBackgroundHandler);
    } catch (CameraAccessException e) {
        e.printStackTrace();
    }
}

From source file:info.staticfree.mqtt_camera.fragment.CameraFragment.java

/**
 * Lock the focus as the first step for a still image capture.
 *//* w w  w.j ava 2 s .  c  o m*/
private void lockFocus() {
    try {
        // This is how to tell the camera to lock focus.
        previewRequestBuilder.set(CaptureRequest.CONTROL_AF_TRIGGER, CameraMetadata.CONTROL_AF_TRIGGER_START);
        // Tell #captureCallback to wait for the lock.
        state = STATE_WAITING_LOCK;
        captureSession.capture(previewRequestBuilder.build(), captureCallback, backgroundHandler);
    } catch (CameraAccessException e) {
        Log.e(TAG, "Error locking focus", e);
    }
}

From source file:org.odk.collect.android.fragments.Camera2Fragment.java

/**
 * Lock the focus as the first step for a still image capture.
 *//*from   w w  w .j  a v  a 2  s .c om*/
private void lockFocus() {
    try {
        // This is how to tell the camera to lock focus.
        previewRequestBuilder.set(CaptureRequest.CONTROL_AF_TRIGGER, CameraMetadata.CONTROL_AF_TRIGGER_START);
        // Tell #captureCallback to wait for the lock.
        state = STATE_WAITING_LOCK;
        captureSession.capture(previewRequestBuilder.build(), captureCallback, backgroundHandler);
    } catch (CameraAccessException e) {
        Timber.e(e);
    }
}

From source file:com.oddsix.nutripro.fragments.Camera2Fragment.java

/**
 * Lock the focus as the first step for a still image capture.
 *///w w w  . j a  v a 2s. c o  m
private void lockFocus() {
    // This is how to tell the camera to lock focus.
    mPreviewRequestBuilder.set(CaptureRequest.CONTROL_AF_TRIGGER, CameraMetadata.CONTROL_AF_TRIGGER_START);
    // Tell #mCaptureCallback to wait for the lock.
    mState = STATE_WAITING_LOCK;
    captureStillPicture();
}

From source file:camera2basic.Camera2BasicFragment.java

/**
 * Lock the focus as the first step for a still image capture.
 *//*from   w ww  .j  av  a  2  s  .  c om*/
private void lockFocus() {
    try {
        // This is how to tell the camera to lock focus.
        mPreviewRequestBuilder.set(CaptureRequest.CONTROL_AF_TRIGGER, CameraMetadata.CONTROL_AF_TRIGGER_START);
        // Tell #mCaptureCallback to wait for the lock.
        mState = STATE_WAITING_LOCK;
        mCaptureSession.capture(mPreviewRequestBuilder.build(), mCaptureCallback, mBackgroundHandler);
    } catch (CameraAccessException e) {
        e.printStackTrace();
    }
}

From source file:mobello.amtrust.com.fragment.Camera2BasicFragment.java

/**
 * Lock the focus as the first step for a still image capture.
 *//*from   w  w  w. java  2s. co  m*/
private void lockFocus() {
    //        try {
    // This is how to tell the camera to lock focus.
    mPreviewRequestBuilder.set(CaptureRequest.CONTROL_AF_TRIGGER, CameraMetadata.CONTROL_AF_TRIGGER_START);
    // Tell #mCaptureCallback to wait for the lock.
    mState = STATE_WAITING_LOCK;
    /*mCaptureSession.capture(mPreviewRequestBuilder.build(), mCaptureCallback,
            mBackgroundHandler);*/
    captureStillPicture();
    /*}catch (CameraAccessException e) {
    e.printStackTrace();
    }*/
}

Example usage for android.hardware.camera2 CameraMetadata CONTROL_AF_TRIGGER_START

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