android.hardware.Camera.Parameters#setSceneMode ( )源码实例Demo

public static void configureSceneMode(@NonNull final Parameters parameters) {
    if (!Parameters.SCENE_MODE_BARCODE.equals(parameters.getSceneMode())) {
        final List<String> supportedSceneModes = parameters.getSupportedSceneModes();
        if (supportedSceneModes != null &&
                supportedSceneModes.contains(Parameters.SCENE_MODE_BARCODE)) {
            parameters.setSceneMode(Parameters.SCENE_MODE_BARCODE);
        }
    }
}
 

private void applySettingsToParameters(final CameraSettings settings,
        final Parameters parameters) {
    final CameraCapabilities.Stringifier stringifier = mCapabilities.getStringifier();
    Size photoSize = settings.getCurrentPhotoSize();
    parameters.setPictureSize(photoSize.width(), photoSize.height());
    Size previewSize = settings.getCurrentPreviewSize();
    parameters.setPreviewSize(previewSize.width(), previewSize.height());
    if (settings.getPreviewFrameRate() == -1) {
        parameters.setPreviewFpsRange(settings.getPreviewFpsRangeMin(),
                settings.getPreviewFpsRangeMax());
    } else {
        parameters.setPreviewFrameRate(settings.getPreviewFrameRate());
    }
    parameters.setPreviewFormat(settings.getCurrentPreviewFormat());
    parameters.setJpegQuality(settings.getPhotoJpegCompressionQuality());
    if (mCapabilities.supports(CameraCapabilities.Feature.ZOOM)) {
        parameters.setZoom(zoomRatioToIndex(settings.getCurrentZoomRatio(),
                parameters.getZoomRatios()));
    }
    parameters.setExposureCompensation(settings.getExposureCompensationIndex());
    if (mCapabilities.supports(CameraCapabilities.Feature.AUTO_EXPOSURE_LOCK)) {
        parameters.setAutoExposureLock(settings.isAutoExposureLocked());
    }
    parameters.setFocusMode(stringifier.stringify(settings.getCurrentFocusMode()));
    if (mCapabilities.supports(CameraCapabilities.Feature.AUTO_WHITE_BALANCE_LOCK)) {
        parameters.setAutoWhiteBalanceLock(settings.isAutoWhiteBalanceLocked());
    }
    if (settings.getWhiteBalance() != null) {
        parameters.setWhiteBalance(stringifier.stringify(settings.getWhiteBalance()));
    }
    if (mCapabilities.supports(CameraCapabilities.Feature.FOCUS_AREA)) {
        if (settings.getFocusAreas().size() != 0) {
            parameters.setFocusAreas(settings.getFocusAreas());
        } else {
            parameters.setFocusAreas(null);
        }
    }
    if (mCapabilities.supports(CameraCapabilities.Feature.METERING_AREA)) {
        if (settings.getMeteringAreas().size() != 0) {
            parameters.setMeteringAreas(settings.getMeteringAreas());
        } else {
            parameters.setMeteringAreas(null);
        }
    }
    if (settings.getCurrentFlashMode() != CameraCapabilities.FlashMode.NO_FLASH) {
        parameters.setFlashMode(stringifier.stringify(settings.getCurrentFlashMode()));
    }
    if (settings.getCurrentSceneMode() != CameraCapabilities.SceneMode.NO_SCENE_MODE) {
        if (settings.getCurrentSceneMode() != null) {
            parameters
                    .setSceneMode(stringifier.stringify(settings.getCurrentSceneMode()));
        }
    }
    parameters.setRecordingHint(settings.isRecordingHintEnabled());
    Size jpegThumbSize = settings.getExifThumbnailSize();
    if (jpegThumbSize != null) {
        parameters.setJpegThumbnailSize(jpegThumbSize.width(), jpegThumbSize.height());
    }
    parameters.setPictureFormat(settings.getCurrentPhotoFormat());

    CameraSettings.GpsData gpsData = settings.getGpsData();
    if (gpsData == null) {
        parameters.removeGpsData();
    } else {
        parameters.setGpsTimestamp(gpsData.timeStamp);
        if (gpsData.processingMethod != null) {
            // It's a hack since we always use GPS time stamp but does
            // not use other fields sometimes. Setting processing
            // method to null means the other fields should not be used.
            parameters.setGpsAltitude(gpsData.altitude);
            parameters.setGpsLatitude(gpsData.latitude);
            parameters.setGpsLongitude(gpsData.longitude);
            parameters.setGpsProcessingMethod(gpsData.processingMethod);
        }
    }

}