Examples with MeteringRectangle android.hardware.camera2.params.MeteringRectangle used on opensource projects

Example 36 with MeteringRectangle

use of android.hardware.camera2.params.MeteringRectangle in project android_frameworks_base by crdroidandroid.

the class Camera2StillCaptureTest method takePictureTestByCamera.

/**
     * Take a picture for a given set of 3A regions for a particular camera.
     * <p>
     * Before take a still capture, it triggers an auto focus and lock it first,
     * then wait for AWB to converge and lock it, then trigger a precapture
     * metering sequence and wait for AE converged. After capture is received, the
     * capture result and image are validated. If {@code addAeTriggerCancel} is true,
     * a precapture trigger cancel will be inserted between two adjacent triggers, which
     * should effective cancel the first trigger.
     * </p>
     *
     * @param aeRegions AE regions for this capture
     * @param awbRegions AWB regions for this capture
     * @param afRegions AF regions for this capture
     * @param addAeTriggerCancel If a AE precapture trigger cancel is sent after the trigger.
     */
private void takePictureTestByCamera(MeteringRectangle[] aeRegions, MeteringRectangle[] awbRegions, MeteringRectangle[] afRegions, boolean addAeTriggerCancel) throws Exception {
    boolean hasFocuser = mStaticInfo.hasFocuser();
    Size maxStillSz = mOrderedStillSizes.get(0);
    Size maxPreviewSz = mOrderedPreviewSizes.get(0);
    CaptureResult result;
    SimpleCaptureCallback resultListener = new SimpleCaptureCallback();
    SimpleImageReaderListener imageListener = new SimpleImageReaderListener();
    CaptureRequest.Builder previewRequest = mCamera.createCaptureRequest(CameraDevice.TEMPLATE_PREVIEW);
    CaptureRequest.Builder stillRequest = mCamera.createCaptureRequest(CameraDevice.TEMPLATE_STILL_CAPTURE);
    prepareStillCaptureAndStartPreview(previewRequest, stillRequest, maxPreviewSz, maxStillSz, resultListener, imageListener);
    // Set AE mode to ON_AUTO_FLASH if flash is available.
    if (mStaticInfo.hasFlash()) {
        previewRequest.set(CaptureRequest.CONTROL_AE_MODE, CaptureRequest.CONTROL_AE_MODE_ON_AUTO_FLASH);
        stillRequest.set(CaptureRequest.CONTROL_AE_MODE, CaptureRequest.CONTROL_AE_MODE_ON_AUTO_FLASH);
    }
    Camera2Focuser focuser = null;
    /**
         * Step 1: trigger an auto focus run, and wait for AF locked.
         */
    boolean canSetAfRegion = hasFocuser && (afRegions != null) && isRegionsSupportedFor3A(MAX_REGIONS_AF_INDEX);
    if (hasFocuser) {
        SimpleAutoFocusListener afListener = new SimpleAutoFocusListener();
        focuser = new Camera2Focuser(mCamera, mSession, mPreviewSurface, afListener, mStaticInfo.getCharacteristics(), mHandler);
        if (canSetAfRegion) {
            stillRequest.set(CaptureRequest.CONTROL_AF_REGIONS, afRegions);
        }
        focuser.startAutoFocus(afRegions);
        afListener.waitForAutoFocusDone(WAIT_FOR_FOCUS_DONE_TIMEOUT_MS);
    }
    /**
         * Have to get the current AF mode to be used for other 3A repeating
         * request, otherwise, the new AF mode in AE/AWB request could be
         * different with existing repeating requests being sent by focuser,
         * then it could make AF unlocked too early. Beside that, for still
         * capture, AF mode must not be different with the one in current
         * repeating request, otherwise, the still capture itself would trigger
         * an AF mode change, and the AF lock would be lost for this capture.
         */
    int currentAfMode = CaptureRequest.CONTROL_AF_MODE_OFF;
    if (hasFocuser) {
        currentAfMode = focuser.getCurrentAfMode();
    }
    previewRequest.set(CaptureRequest.CONTROL_AF_MODE, currentAfMode);
    stillRequest.set(CaptureRequest.CONTROL_AF_MODE, currentAfMode);
    /**
         * Step 2: AF is already locked, wait for AWB converged, then lock it.
         */
    resultListener = new SimpleCaptureCallback();
    boolean canSetAwbRegion = (awbRegions != null) && isRegionsSupportedFor3A(MAX_REGIONS_AWB_INDEX);
    if (canSetAwbRegion) {
        previewRequest.set(CaptureRequest.CONTROL_AWB_REGIONS, awbRegions);
        stillRequest.set(CaptureRequest.CONTROL_AWB_REGIONS, awbRegions);
    }
    mSession.setRepeatingRequest(previewRequest.build(), resultListener, mHandler);
    if (mStaticInfo.isHardwareLevelLimitedOrBetter()) {
        waitForResultValue(resultListener, CaptureResult.CONTROL_AWB_STATE, CaptureResult.CONTROL_AWB_STATE_CONVERGED, NUM_RESULTS_WAIT_TIMEOUT);
    } else {
        // LEGACY Devices don't have the AWB_STATE reported in results, so just wait
        waitForSettingsApplied(resultListener, NUM_FRAMES_WAITED_FOR_UNKNOWN_LATENCY);
    }
    boolean canSetAwbLock = mStaticInfo.isAwbLockSupported();
    if (canSetAwbLock) {
        previewRequest.set(CaptureRequest.CONTROL_AWB_LOCK, true);
    }
    mSession.setRepeatingRequest(previewRequest.build(), resultListener, mHandler);
    // Validate the next result immediately for region and mode.
    result = resultListener.getCaptureResult(WAIT_FOR_RESULT_TIMEOUT_MS);
    mCollector.expectEquals("AWB mode in result and request should be same", previewRequest.get(CaptureRequest.CONTROL_AWB_MODE), result.get(CaptureResult.CONTROL_AWB_MODE));
    if (canSetAwbRegion) {
        MeteringRectangle[] resultAwbRegions = getValueNotNull(result, CaptureResult.CONTROL_AWB_REGIONS);
        mCollector.expectEquals("AWB regions in result and request should be same", awbRegions, resultAwbRegions);
    }
    /**
         * Step 3: trigger an AE precapture metering sequence and wait for AE converged.
         */
    resultListener = new SimpleCaptureCallback();
    boolean canSetAeRegion = (aeRegions != null) && isRegionsSupportedFor3A(MAX_REGIONS_AE_INDEX);
    if (canSetAeRegion) {
        previewRequest.set(CaptureRequest.CONTROL_AE_REGIONS, aeRegions);
        stillRequest.set(CaptureRequest.CONTROL_AE_REGIONS, aeRegions);
    }
    mSession.setRepeatingRequest(previewRequest.build(), resultListener, mHandler);
    previewRequest.set(CaptureRequest.CONTROL_AE_PRECAPTURE_TRIGGER, CaptureRequest.CONTROL_AE_PRECAPTURE_TRIGGER_START);
    mSession.capture(previewRequest.build(), resultListener, mHandler);
    if (addAeTriggerCancel) {
        // Cancel the current precapture trigger, then send another trigger.
        // The camera device should behave as if the first trigger is not sent.
        // Wait one request to make the trigger start doing something before cancel.
        waitForNumResults(resultListener, /*numResultsWait*/
        1);
        previewRequest.set(CaptureRequest.CONTROL_AE_PRECAPTURE_TRIGGER, CaptureRequest.CONTROL_AE_PRECAPTURE_TRIGGER_CANCEL);
        mSession.capture(previewRequest.build(), resultListener, mHandler);
        waitForResultValue(resultListener, CaptureResult.CONTROL_AE_PRECAPTURE_TRIGGER, CaptureResult.CONTROL_AE_PRECAPTURE_TRIGGER_CANCEL, NUM_FRAMES_WAITED_FOR_UNKNOWN_LATENCY);
        // Issue another trigger
        previewRequest.set(CaptureRequest.CONTROL_AE_PRECAPTURE_TRIGGER, CaptureRequest.CONTROL_AE_PRECAPTURE_TRIGGER_START);
        mSession.capture(previewRequest.build(), resultListener, mHandler);
    }
    waitForAeStable(resultListener, NUM_FRAMES_WAITED_FOR_UNKNOWN_LATENCY);
    // Validate the next result immediately for region and mode.
    result = resultListener.getCaptureResult(WAIT_FOR_RESULT_TIMEOUT_MS);
    mCollector.expectEquals("AE mode in result and request should be same", previewRequest.get(CaptureRequest.CONTROL_AE_MODE), result.get(CaptureResult.CONTROL_AE_MODE));
    if (canSetAeRegion) {
        MeteringRectangle[] resultAeRegions = getValueNotNull(result, CaptureResult.CONTROL_AE_REGIONS);
        mCollector.expectMeteringRegionsAreSimilar("AE regions in result and request should be similar", aeRegions, resultAeRegions, METERING_REGION_ERROR_PERCENT_DELTA);
    }
    /**
         * Step 4: take a picture when all 3A are in good state.
         */
    resultListener = new SimpleCaptureCallback();
    CaptureRequest request = stillRequest.build();
    mSession.capture(request, resultListener, mHandler);
    // Validate the next result immediately for region and mode.
    result = resultListener.getCaptureResultForRequest(request, WAIT_FOR_RESULT_TIMEOUT_MS);
    mCollector.expectEquals("AF mode in result and request should be same", stillRequest.get(CaptureRequest.CONTROL_AF_MODE), result.get(CaptureResult.CONTROL_AF_MODE));
    if (canSetAfRegion) {
        MeteringRectangle[] resultAfRegions = getValueNotNull(result, CaptureResult.CONTROL_AF_REGIONS);
        mCollector.expectMeteringRegionsAreSimilar("AF regions in result and request should be similar", afRegions, resultAfRegions, METERING_REGION_ERROR_PERCENT_DELTA);
    }
    if (hasFocuser) {
        // Unlock auto focus.
        focuser.cancelAutoFocus();
    }
    // validate image
    Image image = imageListener.getImage(CAPTURE_IMAGE_TIMEOUT_MS);
    validateJpegCapture(image, maxStillSz);
    // Free image resources
    image.close();
    stopPreview();
}