Java Code Examples for java.awt.image.ColorModel#getColorSpace()

The following examples show how to use java.awt.image.ColorModel#getColorSpace() . You can vote up the ones you like or vote down the ones you don't like, and go to the original project or source file by following the links above each example. You may check out the related API usage on the sidebar.
Example 1
Source File: JPEGImageWriter.java    From jdk8u-dev-jdk with GNU General Public License v2.0 5 votes vote down vote up 
private int getDestCSType(ImageTypeSpecifier destType) {
ColorModel cm = destType.getColorModel();
boolean alpha = cm.hasAlpha();
ColorSpace cs = cm.getColorSpace();
int retval = JPEG.JCS_UNKNOWN;
switch (cs.getType()) {
case ColorSpace.TYPE_GRAY:
        retval = JPEG.JCS_GRAYSCALE;
        break;
    case ColorSpace.TYPE_RGB:
        if (alpha) {
            retval = JPEG.JCS_RGBA;
        } else {
            retval = JPEG.JCS_RGB;
        }
        break;
    case ColorSpace.TYPE_YCbCr:
        if (alpha) {
            retval = JPEG.JCS_YCbCrA;
        } else {
            retval = JPEG.JCS_YCbCr;
        }
        break;
    case ColorSpace.TYPE_3CLR:
        if (cs == JPEG.JCS.getYCC()) {
            if (alpha) {
                retval = JPEG.JCS_YCCA;
            } else {
                retval = JPEG.JCS_YCC;
            }
        }
    case ColorSpace.TYPE_CMYK:
        retval = JPEG.JCS_CMYK;
        break;
    }
return retval;
}
Example 2
Source File: JPEGImageWriter.java    From openjdk-jdk8u-backup with GNU General Public License v2.0 5 votes vote down vote up 
private int getDestCSType(ImageTypeSpecifier destType) {
ColorModel cm = destType.getColorModel();
boolean alpha = cm.hasAlpha();
ColorSpace cs = cm.getColorSpace();
int retval = JPEG.JCS_UNKNOWN;
switch (cs.getType()) {
case ColorSpace.TYPE_GRAY:
        retval = JPEG.JCS_GRAYSCALE;
        break;
    case ColorSpace.TYPE_RGB:
        if (alpha) {
            retval = JPEG.JCS_RGBA;
        } else {
            retval = JPEG.JCS_RGB;
        }
        break;
    case ColorSpace.TYPE_YCbCr:
        if (alpha) {
            retval = JPEG.JCS_YCbCrA;
        } else {
            retval = JPEG.JCS_YCbCr;
        }
        break;
    case ColorSpace.TYPE_3CLR:
        if (cs == JPEG.JCS.getYCC()) {
            if (alpha) {
                retval = JPEG.JCS_YCCA;
            } else {
                retval = JPEG.JCS_YCC;
            }
        }
    case ColorSpace.TYPE_CMYK:
        retval = JPEG.JCS_CMYK;
        break;
    }
return retval;
}
Example 3
Source File: JPEGImageWriter.java    From openjdk-jdk8u-backup with GNU General Public License v2.0 5 votes vote down vote up 
private int getSrcCSType(ColorModel cm) {
    int retval = JPEG.JCS_UNKNOWN;
    if (cm != null) {
        boolean alpha = cm.hasAlpha();
        ColorSpace cs = cm.getColorSpace();
        switch (cs.getType()) {
        case ColorSpace.TYPE_GRAY:
            retval = JPEG.JCS_GRAYSCALE;
            break;
        case ColorSpace.TYPE_RGB:
            if (alpha) {
                retval = JPEG.JCS_RGBA;
            } else {
                retval = JPEG.JCS_RGB;
            }
            break;
        case ColorSpace.TYPE_YCbCr:
            if (alpha) {
                retval = JPEG.JCS_YCbCrA;
            } else {
                retval = JPEG.JCS_YCbCr;
            }
            break;
        case ColorSpace.TYPE_3CLR:
            if (cs == JPEG.JCS.getYCC()) {
                if (alpha) {
                    retval = JPEG.JCS_YCCA;
                } else {
                    retval = JPEG.JCS_YCC;
                }
            }
        case ColorSpace.TYPE_CMYK:
            retval = JPEG.JCS_CMYK;
            break;
        }
    }
    return retval;
}
Example 4
Source File: JPEGImageWriter.java    From openjdk-jdk8u with GNU General Public License v2.0 5 votes vote down vote up 
private int getDefaultDestCSType(ColorModel cm) {
    int retval = JPEG.JCS_UNKNOWN;
    if (cm != null) {
        boolean alpha = cm.hasAlpha();
        ColorSpace cs = cm.getColorSpace();
        switch (cs.getType()) {
        case ColorSpace.TYPE_GRAY:
            retval = JPEG.JCS_GRAYSCALE;
            break;
        case ColorSpace.TYPE_RGB:
            if (alpha) {
                retval = JPEG.JCS_YCbCrA;
            } else {
                retval = JPEG.JCS_YCbCr;
            }
            break;
        case ColorSpace.TYPE_YCbCr:
            if (alpha) {
                retval = JPEG.JCS_YCbCrA;
            } else {
                retval = JPEG.JCS_YCbCr;
            }
            break;
        case ColorSpace.TYPE_3CLR:
            if (cs == JPEG.JCS.getYCC()) {
                if (alpha) {
                    retval = JPEG.JCS_YCCA;
                } else {
                    retval = JPEG.JCS_YCC;
                }
            }
        case ColorSpace.TYPE_CMYK:
            retval = JPEG.JCS_YCCK;
            break;
        }
    }
    return retval;
}
Example 5
Source File: JPEGImageWriter.java    From openjdk-8 with GNU General Public License v2.0 5 votes vote down vote up 
private int getDestCSType(ImageTypeSpecifier destType) {
ColorModel cm = destType.getColorModel();
boolean alpha = cm.hasAlpha();
ColorSpace cs = cm.getColorSpace();
int retval = JPEG.JCS_UNKNOWN;
switch (cs.getType()) {
case ColorSpace.TYPE_GRAY:
        retval = JPEG.JCS_GRAYSCALE;
        break;
    case ColorSpace.TYPE_RGB:
        if (alpha) {
            retval = JPEG.JCS_RGBA;
        } else {
            retval = JPEG.JCS_RGB;
        }
        break;
    case ColorSpace.TYPE_YCbCr:
        if (alpha) {
            retval = JPEG.JCS_YCbCrA;
        } else {
            retval = JPEG.JCS_YCbCr;
        }
        break;
    case ColorSpace.TYPE_3CLR:
        if (cs == JPEG.JCS.getYCC()) {
            if (alpha) {
                retval = JPEG.JCS_YCCA;
            } else {
                retval = JPEG.JCS_YCC;
            }
        }
    case ColorSpace.TYPE_CMYK:
        retval = JPEG.JCS_CMYK;
        break;
    }
return retval;
}
Example 6
Source File: JPEGImageWriter.java    From jdk8u-jdk with GNU General Public License v2.0 5 votes vote down vote up 
private int getSrcCSType(ColorModel cm) {
    int retval = JPEG.JCS_UNKNOWN;
    if (cm != null) {
        boolean alpha = cm.hasAlpha();
        ColorSpace cs = cm.getColorSpace();
        switch (cs.getType()) {
        case ColorSpace.TYPE_GRAY:
            retval = JPEG.JCS_GRAYSCALE;
            break;
        case ColorSpace.TYPE_RGB:
            if (alpha) {
                retval = JPEG.JCS_RGBA;
            } else {
                retval = JPEG.JCS_RGB;
            }
            break;
        case ColorSpace.TYPE_YCbCr:
            if (alpha) {
                retval = JPEG.JCS_YCbCrA;
            } else {
                retval = JPEG.JCS_YCbCr;
            }
            break;
        case ColorSpace.TYPE_3CLR:
            if (cs == JPEG.JCS.getYCC()) {
                if (alpha) {
                    retval = JPEG.JCS_YCCA;
                } else {
                    retval = JPEG.JCS_YCC;
                }
            }
        case ColorSpace.TYPE_CMYK:
            retval = JPEG.JCS_CMYK;
            break;
        }
    }
    return retval;
}
Example 7
Source File: JPEGImageWriter.java    From JDKSourceCode1.8 with MIT License 5 votes vote down vote up 
private int getDefaultDestCSType(ColorModel cm) {
    int retval = JPEG.JCS_UNKNOWN;
    if (cm != null) {
        boolean alpha = cm.hasAlpha();
        ColorSpace cs = cm.getColorSpace();
        switch (cs.getType()) {
        case ColorSpace.TYPE_GRAY:
            retval = JPEG.JCS_GRAYSCALE;
            break;
        case ColorSpace.TYPE_RGB:
            if (alpha) {
                retval = JPEG.JCS_YCbCrA;
            } else {
                retval = JPEG.JCS_YCbCr;
            }
            break;
        case ColorSpace.TYPE_YCbCr:
            if (alpha) {
                retval = JPEG.JCS_YCbCrA;
            } else {
                retval = JPEG.JCS_YCbCr;
            }
            break;
        case ColorSpace.TYPE_3CLR:
            if (cs == JPEG.JCS.getYCC()) {
                if (alpha) {
                    retval = JPEG.JCS_YCCA;
                } else {
                    retval = JPEG.JCS_YCC;
                }
            }
        case ColorSpace.TYPE_CMYK:
            retval = JPEG.JCS_YCCK;
            break;
        }
    }
    return retval;
}
Example 8
Source File: JPEGImageWriter.java    From openjdk-jdk9 with GNU General Public License v2.0 5 votes vote down vote up 
private int getSrcCSType(ColorModel cm) {
    int retval = JPEG.JCS_UNKNOWN;
    if (cm != null) {
        boolean alpha = cm.hasAlpha();
        ColorSpace cs = cm.getColorSpace();
        switch (cs.getType()) {
        case ColorSpace.TYPE_GRAY:
            retval = JPEG.JCS_GRAYSCALE;
            break;
        case ColorSpace.TYPE_RGB:
            if (alpha) {
                retval = JPEG.JCS_RGBA;
            } else {
                retval = JPEG.JCS_RGB;
            }
            break;
        case ColorSpace.TYPE_YCbCr:
            if (alpha) {
                retval = JPEG.JCS_YCbCrA;
            } else {
                retval = JPEG.JCS_YCbCr;
            }
            break;
        case ColorSpace.TYPE_3CLR:
            if (cs == JPEG.JCS.getYCC()) {
                if (alpha) {
                    retval = JPEG.JCS_YCCA;
                } else {
                    retval = JPEG.JCS_YCC;
                }
            }
            break;
        case ColorSpace.TYPE_CMYK:
            retval = JPEG.JCS_CMYK;
            break;
        }
    }
    return retval;
}
Example 9
Source File: JPEGImageWriter.java    From jdk8u-jdk with GNU General Public License v2.0 5 votes vote down vote up 
private int getDefaultDestCSType(ColorModel cm) {
    int retval = JPEG.JCS_UNKNOWN;
    if (cm != null) {
        boolean alpha = cm.hasAlpha();
        ColorSpace cs = cm.getColorSpace();
        switch (cs.getType()) {
        case ColorSpace.TYPE_GRAY:
            retval = JPEG.JCS_GRAYSCALE;
            break;
        case ColorSpace.TYPE_RGB:
            if (alpha) {
                retval = JPEG.JCS_YCbCrA;
            } else {
                retval = JPEG.JCS_YCbCr;
            }
            break;
        case ColorSpace.TYPE_YCbCr:
            if (alpha) {
                retval = JPEG.JCS_YCbCrA;
            } else {
                retval = JPEG.JCS_YCbCr;
            }
            break;
        case ColorSpace.TYPE_3CLR:
            if (cs == JPEG.JCS.getYCC()) {
                if (alpha) {
                    retval = JPEG.JCS_YCCA;
                } else {
                    retval = JPEG.JCS_YCC;
                }
            }
        case ColorSpace.TYPE_CMYK:
            retval = JPEG.JCS_YCCK;
            break;
        }
    }
    return retval;
}
Example 10
Source File: JPEGImageWriter.java    From jdk8u-jdk with GNU General Public License v2.0 5 votes vote down vote up 
private int getSrcCSType(ColorModel cm) {
    int retval = JPEG.JCS_UNKNOWN;
    if (cm != null) {
        boolean alpha = cm.hasAlpha();
        ColorSpace cs = cm.getColorSpace();
        switch (cs.getType()) {
        case ColorSpace.TYPE_GRAY:
            retval = JPEG.JCS_GRAYSCALE;
            break;
        case ColorSpace.TYPE_RGB:
            if (alpha) {
                retval = JPEG.JCS_RGBA;
            } else {
                retval = JPEG.JCS_RGB;
            }
            break;
        case ColorSpace.TYPE_YCbCr:
            if (alpha) {
                retval = JPEG.JCS_YCbCrA;
            } else {
                retval = JPEG.JCS_YCbCr;
            }
            break;
        case ColorSpace.TYPE_3CLR:
            if (cs == JPEG.JCS.getYCC()) {
                if (alpha) {
                    retval = JPEG.JCS_YCCA;
                } else {
                    retval = JPEG.JCS_YCC;
                }
            }
        case ColorSpace.TYPE_CMYK:
            retval = JPEG.JCS_CMYK;
            break;
        }
    }
    return retval;
}
Example 11
Source File: JPEGImageWriter.java    From jdk1.8-source-analysis with Apache License 2.0 5 votes vote down vote up 
private int getSrcCSType(ColorModel cm) {
    int retval = JPEG.JCS_UNKNOWN;
    if (cm != null) {
        boolean alpha = cm.hasAlpha();
        ColorSpace cs = cm.getColorSpace();
        switch (cs.getType()) {
        case ColorSpace.TYPE_GRAY:
            retval = JPEG.JCS_GRAYSCALE;
            break;
        case ColorSpace.TYPE_RGB:
            if (alpha) {
                retval = JPEG.JCS_RGBA;
            } else {
                retval = JPEG.JCS_RGB;
            }
            break;
        case ColorSpace.TYPE_YCbCr:
            if (alpha) {
                retval = JPEG.JCS_YCbCrA;
            } else {
                retval = JPEG.JCS_YCbCr;
            }
            break;
        case ColorSpace.TYPE_3CLR:
            if (cs == JPEG.JCS.getYCC()) {
                if (alpha) {
                    retval = JPEG.JCS_YCCA;
                } else {
                    retval = JPEG.JCS_YCC;
                }
            }
        case ColorSpace.TYPE_CMYK:
            retval = JPEG.JCS_CMYK;
            break;
        }
    }
    return retval;
}
Example 12
Source File: JPEGImageWriter.java    From jdk8u-dev-jdk with GNU General Public License v2.0 5 votes vote down vote up 
private int getSrcCSType(ColorModel cm) {
    int retval = JPEG.JCS_UNKNOWN;
    if (cm != null) {
        boolean alpha = cm.hasAlpha();
        ColorSpace cs = cm.getColorSpace();
        switch (cs.getType()) {
        case ColorSpace.TYPE_GRAY:
            retval = JPEG.JCS_GRAYSCALE;
            break;
        case ColorSpace.TYPE_RGB:
            if (alpha) {
                retval = JPEG.JCS_RGBA;
            } else {
                retval = JPEG.JCS_RGB;
            }
            break;
        case ColorSpace.TYPE_YCbCr:
            if (alpha) {
                retval = JPEG.JCS_YCbCrA;
            } else {
                retval = JPEG.JCS_YCbCr;
            }
            break;
        case ColorSpace.TYPE_3CLR:
            if (cs == JPEG.JCS.getYCC()) {
                if (alpha) {
                    retval = JPEG.JCS_YCCA;
                } else {
                    retval = JPEG.JCS_YCC;
                }
            }
        case ColorSpace.TYPE_CMYK:
            retval = JPEG.JCS_CMYK;
            break;
        }
    }
    return retval;
}
Example 13
Source File: JPEGImageWriter.java    From TencentKona-8 with GNU General Public License v2.0 5 votes vote down vote up 
private int getDefaultDestCSType(ColorModel cm) {
    int retval = JPEG.JCS_UNKNOWN;
    if (cm != null) {
        boolean alpha = cm.hasAlpha();
        ColorSpace cs = cm.getColorSpace();
        switch (cs.getType()) {
        case ColorSpace.TYPE_GRAY:
            retval = JPEG.JCS_GRAYSCALE;
            break;
        case ColorSpace.TYPE_RGB:
            if (alpha) {
                retval = JPEG.JCS_YCbCrA;
            } else {
                retval = JPEG.JCS_YCbCr;
            }
            break;
        case ColorSpace.TYPE_YCbCr:
            if (alpha) {
                retval = JPEG.JCS_YCbCrA;
            } else {
                retval = JPEG.JCS_YCbCr;
            }
            break;
        case ColorSpace.TYPE_3CLR:
            if (cs == JPEG.JCS.getYCC()) {
                if (alpha) {
                    retval = JPEG.JCS_YCCA;
                } else {
                    retval = JPEG.JCS_YCC;
                }
            }
        case ColorSpace.TYPE_CMYK:
            retval = JPEG.JCS_YCCK;
            break;
        }
    }
    return retval;
}
Example 14
Source File: JPEGImageWriter.java    From openjdk-jdk9 with GNU General Public License v2.0 5 votes vote down vote up 
private int getDefaultDestCSType(ColorModel cm) {
    int retval = JPEG.JCS_UNKNOWN;
    if (cm != null) {
        boolean alpha = cm.hasAlpha();
        ColorSpace cs = cm.getColorSpace();
        switch (cs.getType()) {
        case ColorSpace.TYPE_GRAY:
            retval = JPEG.JCS_GRAYSCALE;
            break;
        case ColorSpace.TYPE_RGB:
            if (alpha) {
                retval = JPEG.JCS_YCbCrA;
            } else {
                retval = JPEG.JCS_YCbCr;
            }
            break;
        case ColorSpace.TYPE_YCbCr:
            if (alpha) {
                retval = JPEG.JCS_YCbCrA;
            } else {
                retval = JPEG.JCS_YCbCr;
            }
            break;
        case ColorSpace.TYPE_3CLR:
            if (cs == JPEG.JCS.getYCC()) {
                if (alpha) {
                    retval = JPEG.JCS_YCCA;
                } else {
                    retval = JPEG.JCS_YCC;
                }
            }
            break;
        case ColorSpace.TYPE_CMYK:
            retval = JPEG.JCS_YCCK;
            break;
        }
    }
    return retval;
}
Example 15
Source File: JPEGImageWriter.java    From jdk8u-jdk with GNU General Public License v2.0 5 votes vote down vote up 
private int getDestCSType(ImageTypeSpecifier destType) {
ColorModel cm = destType.getColorModel();
boolean alpha = cm.hasAlpha();
ColorSpace cs = cm.getColorSpace();
int retval = JPEG.JCS_UNKNOWN;
switch (cs.getType()) {
case ColorSpace.TYPE_GRAY:
        retval = JPEG.JCS_GRAYSCALE;
        break;
    case ColorSpace.TYPE_RGB:
        if (alpha) {
            retval = JPEG.JCS_RGBA;
        } else {
            retval = JPEG.JCS_RGB;
        }
        break;
    case ColorSpace.TYPE_YCbCr:
        if (alpha) {
            retval = JPEG.JCS_YCbCrA;
        } else {
            retval = JPEG.JCS_YCbCr;
        }
        break;
    case ColorSpace.TYPE_3CLR:
        if (cs == JPEG.JCS.getYCC()) {
            if (alpha) {
                retval = JPEG.JCS_YCCA;
            } else {
                retval = JPEG.JCS_YCC;
            }
        }
    case ColorSpace.TYPE_CMYK:
        retval = JPEG.JCS_CMYK;
        break;
    }
return retval;
}
Example 16
Source File: JPEGImageWriter.java    From dragonwell8_jdk with GNU General Public License v2.0 5 votes vote down vote up 
private int getDefaultDestCSType(ColorModel cm) {
    int retval = JPEG.JCS_UNKNOWN;
    if (cm != null) {
        boolean alpha = cm.hasAlpha();
        ColorSpace cs = cm.getColorSpace();
        switch (cs.getType()) {
        case ColorSpace.TYPE_GRAY:
            retval = JPEG.JCS_GRAYSCALE;
            break;
        case ColorSpace.TYPE_RGB:
            if (alpha) {
                retval = JPEG.JCS_YCbCrA;
            } else {
                retval = JPEG.JCS_YCbCr;
            }
            break;
        case ColorSpace.TYPE_YCbCr:
            if (alpha) {
                retval = JPEG.JCS_YCbCrA;
            } else {
                retval = JPEG.JCS_YCbCr;
            }
            break;
        case ColorSpace.TYPE_3CLR:
            if (cs == JPEG.JCS.getYCC()) {
                if (alpha) {
                    retval = JPEG.JCS_YCCA;
                } else {
                    retval = JPEG.JCS_YCC;
                }
            }
        case ColorSpace.TYPE_CMYK:
            retval = JPEG.JCS_YCCK;
            break;
        }
    }
    return retval;
}
Example 17
Source File: JPEGImageWriter.java    From jdk8u_jdk with GNU General Public License v2.0 5 votes vote down vote up 
private int getSrcCSType(ColorModel cm) {
    int retval = JPEG.JCS_UNKNOWN;
    if (cm != null) {
        boolean alpha = cm.hasAlpha();
        ColorSpace cs = cm.getColorSpace();
        switch (cs.getType()) {
        case ColorSpace.TYPE_GRAY:
            retval = JPEG.JCS_GRAYSCALE;
            break;
        case ColorSpace.TYPE_RGB:
            if (alpha) {
                retval = JPEG.JCS_RGBA;
            } else {
                retval = JPEG.JCS_RGB;
            }
            break;
        case ColorSpace.TYPE_YCbCr:
            if (alpha) {
                retval = JPEG.JCS_YCbCrA;
            } else {
                retval = JPEG.JCS_YCbCr;
            }
            break;
        case ColorSpace.TYPE_3CLR:
            if (cs == JPEG.JCS.getYCC()) {
                if (alpha) {
                    retval = JPEG.JCS_YCCA;
                } else {
                    retval = JPEG.JCS_YCC;
                }
            }
        case ColorSpace.TYPE_CMYK:
            retval = JPEG.JCS_CMYK;
            break;
        }
    }
    return retval;
}
Example 18
Source File: JPEGImageWriter.java    From openjdk-8-source with GNU General Public License v2.0 5 votes vote down vote up 
private int getSrcCSType(ColorModel cm) {
    int retval = JPEG.JCS_UNKNOWN;
    if (cm != null) {
        boolean alpha = cm.hasAlpha();
        ColorSpace cs = cm.getColorSpace();
        switch (cs.getType()) {
        case ColorSpace.TYPE_GRAY:
            retval = JPEG.JCS_GRAYSCALE;
            break;
        case ColorSpace.TYPE_RGB:
            if (alpha) {
                retval = JPEG.JCS_RGBA;
            } else {
                retval = JPEG.JCS_RGB;
            }
            break;
        case ColorSpace.TYPE_YCbCr:
            if (alpha) {
                retval = JPEG.JCS_YCbCrA;
            } else {
                retval = JPEG.JCS_YCbCr;
            }
            break;
        case ColorSpace.TYPE_3CLR:
            if (cs == JPEG.JCS.getYCC()) {
                if (alpha) {
                    retval = JPEG.JCS_YCCA;
                } else {
                    retval = JPEG.JCS_YCC;
                }
            }
        case ColorSpace.TYPE_CMYK:
            retval = JPEG.JCS_CMYK;
            break;
        }
    }
    return retval;
}
Example 19
Source File: WebPImageWriterSpi.java    From webp-imageio with Apache License 2.0 5 votes vote down vote up 
@Override
public boolean canEncodeImage( ImageTypeSpecifier type ) {
  ColorModel colorModel = type.getColorModel();
  SampleModel sampleModel = type.getSampleModel();
  int transferType = sampleModel.getTransferType();

  if ( colorModel instanceof ComponentColorModel ) {
    if ( !( sampleModel instanceof ComponentSampleModel ) ) {
      return false;
    }

    if ( transferType != DataBuffer.TYPE_BYTE && transferType != DataBuffer.TYPE_INT ) {
      return false;
    }
  }
  else if ( colorModel instanceof DirectColorModel ) {
    if ( !( sampleModel instanceof SinglePixelPackedSampleModel ) ) {
      return false;
    }

    if ( transferType != DataBuffer.TYPE_INT ) {
      return false;
    }
  }

  ColorSpace colorSpace = colorModel.getColorSpace();
  if ( !( colorSpace.isCS_sRGB() ) ) {
    return false;
  }

  int[] sampleSize = sampleModel.getSampleSize();
  for ( int i = 0; i < sampleSize.length; i++ ) {
    if ( sampleSize[ i ] > 8 ) {
      return false;
    }
  }


  return true;
}
Example 20
Source File: JPEGImageWriter.java    From jdk1.8-source-analysis with Apache License 2.0 5 votes vote down vote up 
private int getDestCSType(ImageTypeSpecifier destType) {
ColorModel cm = destType.getColorModel();
boolean alpha = cm.hasAlpha();
ColorSpace cs = cm.getColorSpace();
int retval = JPEG.JCS_UNKNOWN;
switch (cs.getType()) {
case ColorSpace.TYPE_GRAY:
        retval = JPEG.JCS_GRAYSCALE;
        break;
    case ColorSpace.TYPE_RGB:
        if (alpha) {
            retval = JPEG.JCS_RGBA;
        } else {
            retval = JPEG.JCS_RGB;
        }
        break;
    case ColorSpace.TYPE_YCbCr:
        if (alpha) {
            retval = JPEG.JCS_YCbCrA;
        } else {
            retval = JPEG.JCS_YCbCr;
        }
        break;
    case ColorSpace.TYPE_3CLR:
        if (cs == JPEG.JCS.getYCC()) {
            if (alpha) {
                retval = JPEG.JCS_YCCA;
            } else {
                retval = JPEG.JCS_YCC;
            }
        }
    case ColorSpace.TYPE_CMYK:
        retval = JPEG.JCS_CMYK;
        break;
    }
return retval;
}