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ZXByQuadrantReader.h 1.2KB

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  1. /*
  2. * Copyright 2012 ZXing authors
  3. *
  4. * Licensed under the Apache License, Version 2.0 (the "License");
  5. * you may not use this file except in compliance with the License.
  6. * You may obtain a copy of the License at
  7. *
  8. * http://www.apache.org/licenses/LICENSE-2.0
  9. *
  10. * Unless required by applicable law or agreed to in writing, software
  11. * distributed under the License is distributed on an "AS IS" BASIS,
  12. * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  13. * See the License for the specific language governing permissions and
  14. * limitations under the License.
  15. */
  16. #import "ZXReader.h"
  17. /**
  18. * This class attempts to decode a barcode from an image, not by scanning the whole image,
  19. * but by scanning subsets of the image. This is important when there may be multiple barcodes in
  20. * an image, and detecting a barcode may find parts of multiple barcode and fail to decode
  21. * (e.g. QR Codes). Instead this scans the four quadrants of the image -- and also the center
  22. * 'quadrant' to cover the case where a barcode is found in the center.
  23. */
  24. @interface ZXByQuadrantReader : NSObject <ZXReader>
  25. - (id)initWithDelegate:(id<ZXReader>)delegate;
  26. @end