cpp/core/src/GrayBytesMonochromeBitmapSource.cpp

   1 /*
   2  *  GrayBytesMonochromeBitmapSource.cpp
   3  *  ZXing
   4  *
   5  *  Created by Christian Brunschen on 03/06/2008.
   6  *  Copyright 2008 ZXing authors All rights reserved.
   7  *
   8  */
   9
  10 #include "GrayBytesMonochromeBitmapSource.h"
  11 #include "ReaderException.h"
  12 #include "TransformingMonochromeBitmapSource.h"
  13
  14 GrayBytesMonochromeBitmapSource::
  15 GrayBytesMonochromeBitmapSource(const unsigned char *bytes,
  16                                 size_t width,
  17                                 size_t height,
  18                                 size_t bytesPerRow)
  19 : MonochromeBitmapSource(),
  20 width_(width),
  21 height_(height),
  22 bytes_(bytes),
  23 bytesPerRow_(bytesPerRow) { }
  24
  25
  26 size_t GrayBytesMonochromeBitmapSource::getWidth() {
  27   return width_;
  28 }
  29
  30 size_t GrayBytesMonochromeBitmapSource::getHeight() {
  31   return height_;
  32 }
  33
  34 unsigned char GrayBytesMonochromeBitmapSource::getPixel(size_t x, size_t y) {
  35   if (x >= width_ || y >= height_) {
  36     throw new ReaderException("bitmap coordinate out of bounds");
  37   }
  38   size_t index = y * bytesPerRow_ + x;
  39   return bytes_[index];
  40 }
  41
  42 // create a new bitmap source with the same data but rotated counter-clockwise
  43 Ref<MonochromeBitmapSource>
  44 GrayBytesMonochromeBitmapSource::rotateCounterClockwise() {
  45   Ref<MonochromeBitmapSource> self(this);
  46   Ref<MonochromeBitmapSource> result(new TMBS90(self, 1.0));
  47   return result;
  48 }
  49
  50 bool GrayBytesMonochromeBitmapSource::isRotateSupported() {
  51   return true;
  52 }