/**
 * Opens the camera driver and initializes the hardware parameters.
 *
 * @param holder The surface object which the camera will draw preview frames into.
 * @throws IOException Indicates the camera driver failed to open.
 */
public void openDriver(SurfaceHolder holder) throws IOException {
  Camera theCamera = camera;
  if (theCamera == null) {
    theCamera = Camera.open();
    if (theCamera == null) {
      throw new IOException();
    }
    camera = theCamera;
  }
  theCamera.setPreviewDisplay(holder);

  if (!initialized) {
    initialized = true;
    configManager.initFromCameraParameters(theCamera);
    if (requestedFramingRectWidth > 0 && requestedFramingRectHeight > 0) {
      setManualFramingRect(requestedFramingRectWidth, requestedFramingRectHeight);
      requestedFramingRectWidth = 0;
      requestedFramingRectHeight = 0;
    }
  }
  configManager.setDesiredCameraParameters(theCamera);

  SharedPreferences prefs = PreferenceManager.getDefaultSharedPreferences(context);
  reverseImage = prefs.getBoolean(PreferencesActivity.KEY_REVERSE_IMAGE, false);
}
 

AutoFocusManager(Context context, Camera camera) {
  this.camera = camera;
  SharedPreferences sharedPrefs = PreferenceManager.getDefaultSharedPreferences(context);
  String currentFocusMode = camera.getParameters().getFocusMode();
  useAutoFocus =
      sharedPrefs.getBoolean(PreferencesActivity.KEY_AUTO_FOCUS, true) &&
      FOCUS_MODES_CALLING_AF.contains(currentFocusMode);
  Log.i(TAG, "Current focus mode '" + currentFocusMode + "'; use auto focus? " + useAutoFocus);
  start();
}
 

private void doSetTorch(Camera.Parameters parameters, boolean newSetting, boolean safeMode) {
  CameraConfigurationUtils.setTorch(parameters, newSetting);
  SharedPreferences prefs = PreferenceManager.getDefaultSharedPreferences(context);
  if (!safeMode && !prefs.getBoolean(PreferencesActivity.KEY_DISABLE_EXPOSURE, true)) {
    CameraConfigurationUtils.setBestExposure(parameters, newSetting);
  }
}
 

private String parseCustomSearchURL() {
  SharedPreferences prefs = PreferenceManager.getDefaultSharedPreferences(activity);
  String customProductSearch = prefs.getString(PreferencesActivity.KEY_CUSTOM_PRODUCT_SEARCH,
      null);
  if (customProductSearch != null && customProductSearch.trim().isEmpty()) {
    return null;
  }
  return customProductSearch;
}
 

public void addHistoryItem(Result result, ResultHandler handler) {
  // Do not save this item to the history if the preference is turned off, or the contents are
  // considered secure.
  if (!activity.getIntent().getBooleanExtra(Intents.Scan.SAVE_HISTORY, true) ||
      handler.areContentsSecure() || !enableHistory) {
    return;
  }

  SharedPreferences prefs = PreferenceManager.getDefaultSharedPreferences(activity);
  if (!prefs.getBoolean(PreferencesActivity.KEY_REMEMBER_DUPLICATES, false)) {
    deletePrevious(result.getText());
  }

  ContentValues values = new ContentValues();
  values.put(DBHelper.TEXT_COL, result.getText());
  values.put(DBHelper.FORMAT_COL, result.getBarcodeFormat().toString());
  values.put(DBHelper.DISPLAY_COL, handler.getDisplayContents().toString());
  values.put(DBHelper.TIMESTAMP_COL, System.currentTimeMillis());

  SQLiteOpenHelper helper = new DBHelper(activity);
  SQLiteDatabase db = null;
  try {
    db = helper.getWritableDatabase();      
    // Insert the new entry into the DB.
    db.insert(DBHelper.TABLE_NAME, DBHelper.TIMESTAMP_COL, values);
  } finally {
    close(null, db);
  }
}
 

AutoFocusManager(Context context, Camera camera) {
  this.camera = camera;
  SharedPreferences sharedPrefs = PreferenceManager.getDefaultSharedPreferences(context);
  String currentFocusMode = camera.getParameters().getFocusMode();
  useAutoFocus =
      sharedPrefs.getBoolean(PreferencesActivity.KEY_AUTO_FOCUS, true) &&
      FOCUS_MODES_CALLING_AF.contains(currentFocusMode);
  Log.i(TAG, "Current focus mode '" + currentFocusMode + "'; use auto focus? " + useAutoFocus);
  start();
}
 

private void doSetTorch(Camera.Parameters parameters, boolean newSetting, boolean safeMode) {
  CameraConfigurationUtils.setTorch(parameters, newSetting);
  SharedPreferences prefs = PreferenceManager.getDefaultSharedPreferences(context);
  if (!safeMode && !prefs.getBoolean(PreferencesActivity.KEY_DISABLE_EXPOSURE, true)) {
    CameraConfigurationUtils.setBestExposure(parameters, newSetting);
  }
}
 

private String parseCustomSearchURL() {
  SharedPreferences prefs = PreferenceManager.getDefaultSharedPreferences(activity);
  String customProductSearch = prefs.getString(PreferencesActivity.KEY_CUSTOM_PRODUCT_SEARCH,
      null);
  if (customProductSearch != null && customProductSearch.trim().isEmpty()) {
    return null;
  }
  return customProductSearch;
}
 

public void addHistoryItem(Result result, ResultHandler handler) {
  // Do not save this item to the history if the preference is turned off, or the contents are
  // considered secure.
  if (!activity.getIntent().getBooleanExtra(Intents.Scan.SAVE_HISTORY, true) ||
      handler.areContentsSecure() || !enableHistory) {
    return;
  }

  SharedPreferences prefs = PreferenceManager.getDefaultSharedPreferences(activity);
  if (!prefs.getBoolean(PreferencesActivity.KEY_REMEMBER_DUPLICATES, false)) {
    deletePrevious(result.getText());
  }

  ContentValues values = new ContentValues();
  values.put(DBHelper.TEXT_COL, result.getText());
  values.put(DBHelper.FORMAT_COL, result.getBarcodeFormat().toString());
  values.put(DBHelper.DISPLAY_COL, handler.getDisplayContents().toString());
  values.put(DBHelper.TIMESTAMP_COL, System.currentTimeMillis());

  SQLiteOpenHelper helper = new DBHelper(activity);
  SQLiteDatabase db = null;
  try {
    db = helper.getWritableDatabase();      
    // Insert the new entry into the DB.
    db.insert(DBHelper.TABLE_NAME, DBHelper.TIMESTAMP_COL, values);
  } finally {
    close(null, db);
  }
}
 

AutoFocusManager(Context context, Camera camera) {
  this.camera = camera;
  SharedPreferences sharedPrefs = PreferenceManager.getDefaultSharedPreferences(context);
  String currentFocusMode = camera.getParameters().getFocusMode();
  useAutoFocus =
      sharedPrefs.getBoolean(PreferencesActivity.KEY_AUTO_FOCUS, true) &&
      FOCUS_MODES_CALLING_AF.contains(currentFocusMode);
  Log.i(TAG, "Current focus mode '" + currentFocusMode + "'; use auto focus? " + useAutoFocus);
  start();
}
 

private void doSetTorch(Camera.Parameters parameters, boolean newSetting, boolean safeMode) {
  CameraConfigurationUtils.setTorch(parameters, newSetting);
  SharedPreferences prefs = PreferenceManager.getDefaultSharedPreferences(context);
  if (!safeMode && !prefs.getBoolean(PreferencesActivity.KEY_DISABLE_EXPOSURE, true)) {
    CameraConfigurationUtils.setBestExposure(parameters, newSetting);
  }
}
 

private String parseCustomSearchURL() {
  SharedPreferences prefs = PreferenceManager.getDefaultSharedPreferences(activity);
  String customProductSearch = prefs.getString(PreferencesActivity.KEY_CUSTOM_PRODUCT_SEARCH,
      null);
  if (customProductSearch != null && customProductSearch.trim().isEmpty()) {
    return null;
  }
  return customProductSearch;
}
 

public void addHistoryItem(Result result, ResultHandler handler) {
  // Do not save this item to the history if the preference is turned off, or the contents are
  // considered secure.
  if (!activity.getIntent().getBooleanExtra(Intents.Scan.SAVE_HISTORY, true) ||
      handler.areContentsSecure() || !enableHistory) {
    return;
  }

  SharedPreferences prefs = PreferenceManager.getDefaultSharedPreferences(activity);
  if (!prefs.getBoolean(PreferencesActivity.KEY_REMEMBER_DUPLICATES, false)) {
    deletePrevious(result.getText());
  }

  ContentValues values = new ContentValues();
  values.put(DBHelper.TEXT_COL, result.getText());
  values.put(DBHelper.FORMAT_COL, result.getBarcodeFormat().toString());
  values.put(DBHelper.DISPLAY_COL, handler.getDisplayContents().toString());
  values.put(DBHelper.TIMESTAMP_COL, System.currentTimeMillis());

  SQLiteOpenHelper helper = new DBHelper(activity);
  SQLiteDatabase db = null;
  try {
    db = helper.getWritableDatabase();      
    // Insert the new entry into the DB.
    db.insert(DBHelper.TABLE_NAME, DBHelper.TIMESTAMP_COL, values);
  } finally {
    close(null, db);
  }
}
 

AutoFocusManager(Context context, Camera camera) {
  this.camera = camera;
  SharedPreferences sharedPrefs = PreferenceManager.getDefaultSharedPreferences(context);
  String currentFocusMode = camera.getParameters().getFocusMode();
  useAutoFocus =
      sharedPrefs.getBoolean(PreferencesActivity.KEY_AUTO_FOCUS, true) &&
      FOCUS_MODES_CALLING_AF.contains(currentFocusMode);
  Log.i(TAG, "Current focus mode '" + currentFocusMode + "'; use auto focus? " + useAutoFocus);
  start();
}
 

private void doSetTorch(Camera.Parameters parameters, boolean newSetting, boolean safeMode) {
  CameraConfigurationUtils.setTorch(parameters, newSetting);
  SharedPreferences prefs = PreferenceManager.getDefaultSharedPreferences(context);
  if (!safeMode && !prefs.getBoolean(PreferencesActivity.KEY_DISABLE_EXPOSURE, true)) {
    CameraConfigurationUtils.setBestExposure(parameters, newSetting);
  }
}
 

private String parseCustomSearchURL() {
  SharedPreferences prefs = PreferenceManager.getDefaultSharedPreferences(activity);
  String customProductSearch = prefs.getString(PreferencesActivity.KEY_CUSTOM_PRODUCT_SEARCH,
      null);
  if (customProductSearch != null && customProductSearch.trim().isEmpty()) {
    return null;
  }
  return customProductSearch;
}
 

public void addHistoryItem(Result result, ResultHandler handler) {
  // Do not save this item to the history if the preference is turned off, or the contents are
  // considered secure.
  if (!activity.getIntent().getBooleanExtra(Intents.Scan.SAVE_HISTORY, true) ||
      handler.areContentsSecure() || !enableHistory) {
    return;
  }

  SharedPreferences prefs = PreferenceManager.getDefaultSharedPreferences(activity);
  if (!prefs.getBoolean(PreferencesActivity.KEY_REMEMBER_DUPLICATES, false)) {
    deletePrevious(result.getText());
  }

  ContentValues values = new ContentValues();
  values.put(DBHelper.TEXT_COL, result.getText());
  values.put(DBHelper.FORMAT_COL, result.getBarcodeFormat().toString());
  values.put(DBHelper.DISPLAY_COL, handler.getDisplayContents().toString());
  values.put(DBHelper.TIMESTAMP_COL, System.currentTimeMillis());

  SQLiteOpenHelper helper = new DBHelper(activity);
  SQLiteDatabase db = null;
  try {
    db = helper.getWritableDatabase();      
    // Insert the new entry into the DB.
    db.insert(DBHelper.TABLE_NAME, DBHelper.TIMESTAMP_COL, values);
  } finally {
    close(null, db);
  }
}
 

AutoFocusManager(Context context, Camera camera) {
  this.camera = camera;
  SharedPreferences sharedPrefs = PreferenceManager.getDefaultSharedPreferences(context);
  String currentFocusMode = camera.getParameters().getFocusMode();
  useAutoFocus =
      sharedPrefs.getBoolean(PreferencesActivity.KEY_AUTO_FOCUS, true) &&
      FOCUS_MODES_CALLING_AF.contains(currentFocusMode);
  Log.i(TAG, "Current focus mode '" + currentFocusMode + "'; use auto focus? " + useAutoFocus);
  start();
}
 

private void doSetTorch(Camera.Parameters parameters, boolean newSetting, boolean safeMode) {
  CameraConfigurationUtils.setTorch(parameters, newSetting);
  SharedPreferences prefs = PreferenceManager.getDefaultSharedPreferences(context);
  if (!safeMode && !prefs.getBoolean(PreferencesActivity.KEY_DISABLE_EXPOSURE, true)) {
    CameraConfigurationUtils.setBestExposure(parameters, newSetting);
  }
}
 

private String parseCustomSearchURL() {
  SharedPreferences prefs = PreferenceManager.getDefaultSharedPreferences(activity);
  String customProductSearch = prefs.getString(PreferencesActivity.KEY_CUSTOM_PRODUCT_SEARCH,
      null);
  if (customProductSearch != null && customProductSearch.trim().isEmpty()) {
    return null;
  }
  return customProductSearch;
}
 

public void addHistoryItem(Result result, ResultHandler handler) {
  // Do not save this item to the history if the preference is turned off, or the contents are
  // considered secure.
  if (!activity.getIntent().getBooleanExtra(Intents.Scan.SAVE_HISTORY, true) ||
      handler.areContentsSecure() || !enableHistory) {
    return;
  }

  SharedPreferences prefs = PreferenceManager.getDefaultSharedPreferences(activity);
  if (!prefs.getBoolean(PreferencesActivity.KEY_REMEMBER_DUPLICATES, false)) {
    deletePrevious(result.getText());
  }

  ContentValues values = new ContentValues();
  values.put(DBHelper.TEXT_COL, result.getText());
  values.put(DBHelper.FORMAT_COL, result.getBarcodeFormat().toString());
  values.put(DBHelper.DISPLAY_COL, handler.getDisplayContents().toString());
  values.put(DBHelper.TIMESTAMP_COL, System.currentTimeMillis());

  SQLiteOpenHelper helper = new DBHelper(activity);
  SQLiteDatabase db = null;
  try {
    db = helper.getWritableDatabase();      
    // Insert the new entry into the DB.
    db.insert(DBHelper.TABLE_NAME, DBHelper.TIMESTAMP_COL, values);
  } finally {
    close(null, db);
  }
}
 

AutoFocusManager(Context context, Camera camera) {
  this.camera = camera;
  taskExec = new AsyncTaskExecManager().build();
  SharedPreferences sharedPrefs = PreferenceManager.getDefaultSharedPreferences(context);
  String currentFocusMode = camera.getParameters().getFocusMode();
  useAutoFocus =
      sharedPrefs.getBoolean(PreferencesActivity.KEY_AUTO_FOCUS, true) &&
      FOCUS_MODES_CALLING_AF.contains(currentFocusMode);
  Log.i(TAG, "Current focus mode '" + currentFocusMode + "'; use auto focus? " + useAutoFocus);
  start();
}
 

void setTorch(Camera camera, boolean newSetting) {
  Camera.Parameters parameters = camera.getParameters();
  doSetTorch(parameters, newSetting, false);
  camera.setParameters(parameters);
  SharedPreferences prefs = PreferenceManager.getDefaultSharedPreferences(context);
  boolean currentSetting = prefs.getBoolean(PreferencesActivity.KEY_FRONT_LIGHT, false);
  if (currentSetting != newSetting) {
    SharedPreferences.Editor editor = prefs.edit();
    editor.putBoolean(PreferencesActivity.KEY_FRONT_LIGHT, newSetting);
    editor.commit();
  }
}
 

private String parseCustomSearchURL() {
  SharedPreferences prefs = PreferenceManager.getDefaultSharedPreferences(activity);
  String customProductSearch = prefs.getString(PreferencesActivity.KEY_CUSTOM_PRODUCT_SEARCH,
      null);
  if (customProductSearch != null && customProductSearch.trim().length() == 0) {
    return null;
  }
  return customProductSearch;
}
 

public void addHistoryItem(Result result, ResultHandler handler) {
  // Do not save this item to the history if the preference is turned off, or the contents are
  // considered secure.
  if (!activity.getIntent().getBooleanExtra(Intents.Scan.SAVE_HISTORY, true) ||
      handler.areContentsSecure()) {
    return;
  }

  SharedPreferences prefs = PreferenceManager.getDefaultSharedPreferences(activity);
  if (!prefs.getBoolean(PreferencesActivity.KEY_REMEMBER_DUPLICATES, false)) {
    deletePrevious(result.getText());
  }

  ContentValues values = new ContentValues();
  values.put(DBHelper.TEXT_COL, result.getText());
  values.put(DBHelper.FORMAT_COL, result.getBarcodeFormat().toString());
  values.put(DBHelper.DISPLAY_COL, handler.getDisplayContents().toString());
  values.put(DBHelper.TIMESTAMP_COL, System.currentTimeMillis());

  SQLiteOpenHelper helper = new DBHelper(activity);
  SQLiteDatabase db = null;
  try {
    db = helper.getWritableDatabase();      
    // Insert the new entry into the DB.
    db.insert(DBHelper.TABLE_NAME, DBHelper.TIMESTAMP_COL, values);
  } finally {
    close(null, db);
  }
}
 

void setTorch(Camera camera, boolean newSetting) {
  Camera.Parameters parameters = camera.getParameters();
  doSetTorch(parameters, newSetting);
  camera.setParameters(parameters);
  SharedPreferences prefs = PreferenceManager.getDefaultSharedPreferences(context);
  boolean currentSetting = prefs.getBoolean(PreferencesActivity.KEY_FRONT_LIGHT, false);
  if (currentSetting != newSetting) {
    SharedPreferences.Editor editor = prefs.edit();
    editor.putBoolean(PreferencesActivity.KEY_FRONT_LIGHT, newSetting);
    editor.commit();
  }
}
 

private String parseCustomSearchURL() {
  SharedPreferences prefs = PreferenceManager.getDefaultSharedPreferences(activity);
  String customProductSearch = prefs.getString(PreferencesActivity.KEY_CUSTOM_PRODUCT_SEARCH,
      null);
  if (customProductSearch != null && customProductSearch.trim().length() == 0) {
    return null;
  }
  return customProductSearch;
}
 

public void addHistoryItem(Result result, ResultHandler handler) {
  // Do not save this item to the history if the preference is turned off, or the contents are
  // considered secure.
  if (!activity.getIntent().getBooleanExtra(Intents.Scan.SAVE_HISTORY, true) ||
      handler.areContentsSecure()) {
    return;
  }

  SharedPreferences prefs = PreferenceManager.getDefaultSharedPreferences(activity);
  if (!prefs.getBoolean(PreferencesActivity.KEY_REMEMBER_DUPLICATES, false)) {
    deletePrevious(result.getText());
  }

  ContentValues values = new ContentValues();
  values.put(DBHelper.TEXT_COL, result.getText());
  values.put(DBHelper.FORMAT_COL, result.getBarcodeFormat().toString());
  values.put(DBHelper.DISPLAY_COL, handler.getDisplayContents().toString());
  values.put(DBHelper.TIMESTAMP_COL, System.currentTimeMillis());

  SQLiteOpenHelper helper = new DBHelper(activity);
  SQLiteDatabase db = null;
  try {
    db = helper.getWritableDatabase();      
    // Insert the new entry into the DB.
    db.insert(DBHelper.TABLE_NAME, DBHelper.TIMESTAMP_COL, values);
  } finally {
    close(null, db);
  }
}
 

AutoFocusManager(Context context, Camera camera) {
  this.camera = camera;
  SharedPreferences sharedPrefs = PreferenceManager.getDefaultSharedPreferences(context);
  String currentFocusMode = camera.getParameters().getFocusMode();
  useAutoFocus =
      sharedPrefs.getBoolean(PreferencesActivity.KEY_AUTO_FOCUS, true) &&
      FOCUS_MODES_CALLING_AF.contains(currentFocusMode);
  Log.i(TAG, "Current focus mode '" + currentFocusMode + "'; use auto focus? " + useAutoFocus);
  start();
}
 

private void doSetTorch(Camera.Parameters parameters, boolean newSetting, boolean safeMode) {
  CameraConfigurationUtils.setTorch(parameters, newSetting);
  SharedPreferences prefs = PreferenceManager.getDefaultSharedPreferences(context);
  if (!safeMode && !prefs.getBoolean(PreferencesActivity.KEY_DISABLE_EXPOSURE, true)) {
    CameraConfigurationUtils.setBestExposure(parameters, newSetting);
  }
}