orthanc: OrthancFramework/Sources/Images/ImageProcessing.cpp comparison

fix decoding of images on big-endian architectures

author	Sebastien Jodogne <s.jodogne@gmail.com>
date	Wed, 24 Feb 2021 21:06:34 +0100
parents	8421b3fc02d7
children	f9eda86f9045

comparison

equal deleted inserted replaced

-:93a51d228d80
+:5774fe497ff2
 }
 }
 }
 }
 }
+void ImageProcessing::SwapEndianness(ImageAccessor& image /* inplace */)
+{
+const unsigned int width = image.GetWidth();
+const unsigned int height = image.GetHeight();
+switch (image.GetFormat())
+{
+case PixelFormat_Grayscale8:
+case PixelFormat_RGB24:
+case PixelFormat_RGBA32:
+case PixelFormat_BGRA32:
+// No swapping required
+break;
+case PixelFormat_Grayscale16:
+case PixelFormat_SignedGrayscale16:
+for (unsigned int y = 0; y < height; y++)
+{
+uint8_t* t = reinterpret_cast<uint8_t*>(image.GetRow(y));
+for (unsigned int x = 0; x < width; x++)
+{
+uint8_t a = t[0];
+t[0] = t[1];
+t[1] = a;
+t += 2;
+}
+}
+break;
+case PixelFormat_Grayscale32:
+case PixelFormat_Float32:
+for (unsigned int y = 0; y < height; y++)
+{
+uint8_t* t = reinterpret_cast<uint8_t*>(image.GetRow(y));
+for (unsigned int x = 0; x < width; x++)
+{
+uint8_t a = t[0];
+uint8_t b = t[1];
+t[0] = t[3];
+t[1] = t[2];
+t[2] = b;
+t[3] = a;
+t += 4;
+}
+}
+break;
+case PixelFormat_RGB48:  // uint16_t per channel
+for (unsigned int y = 0; y < height; y++)
+{
+uint8_t* t = reinterpret_cast<uint8_t*>(image.GetRow(y));
+for (unsigned int x = 0; x < 3 * width; x++)
+{
+uint8_t a = t[0];
+t[0] = t[1];
+t[1] = a;
+t += 2;
+}
+}
+break;
+default:
+throw OrthancException(ErrorCode_NotImplemented);
+}
+}
 }

Mercurial > hg > orthanc