javax.imageio.plugins.bmp.BMPImageWriteParam#canWriteCompressed ( )源码实例Demo

下面列出了javax.imageio.plugins.bmp.BMPImageWriteParam#canWriteCompressed ( ) 实例代码，或者点击链接到github查看源代码，也可以在右侧发表评论。

源代码1 项目： openjdk-jdk9 文件： BMPCompressionTest.java

public static Iterator createTestSet(ImageWriter w) {
    List l = new LinkedList();

    Test.iw = w;

    // variate compression types
    BMPImageWriteParam param = (BMPImageWriteParam)iw.getDefaultWriteParam();
    param.setCompressionMode(ImageWriteParam.MODE_EXPLICIT);
    param.setCompressionType("BI_RGB");
    if (param.canWriteCompressed()) {
        String[] cTypes = param.getCompressionTypes();
        String[] cDescr = param.getCompressionQualityDescriptions();
        float[] cValues = param.getCompressionQualityValues();

        if (cDescr == null) {
            System.out.println("There are no compression quality description!");
        } else {
            for(int i=0; i<cDescr.length; i++) {
                System.out.println("Quality[" + i + "]=\""+cDescr[i]+"\"");
            }
        }
        if (cValues == null) {
            System.out.println("There are no compression quality values!");
        } else {
            for(int i=0; i<cValues.length; i++) {
                System.out.println("Value["+i+"]=\""+cValues[i]+"\"");
            }
        }

        for(int i=0; i<cTypes.length; i++) {
            String compressionType = cTypes[i];
            BufferedImage img = null;

            int type = BufferedImage.TYPE_INT_BGR;
            try {
                img = createTestImage(type);
                if (compressionType.equals("BI_RLE8")) {
                    img = createTestImage2(8, DataBuffer.TYPE_BYTE);
                } else if (compressionType.equals("BI_RLE4")) {
                    img = createTestImage3(4, DataBuffer.TYPE_BYTE);
                } else if (compressionType.equals("BI_BITFIELDS")) {
                    img = createTestImage4(32);
                }

            } catch (IOException ex) {
                throw new RuntimeException("Unable to create test image");
            }
            BMPImageWriteParam p = (BMPImageWriteParam)iw.getDefaultWriteParam();
            System.out.println("Current compression type is \""+cTypes[i]+"\"");
            p.setCompressionMode(ImageWriteParam.MODE_EXPLICIT);
            p.setCompressionType(compressionType);

            IIOMetadata md = iw.getDefaultImageMetadata(new ImageTypeSpecifier(img), p);

            l.add( new Test(p, md, img));
        }
    }
    //     }
    return l.iterator();

}

源代码2 项目： jdk8u_jdk 文件： BMPCompressionTest.java

public static Iterator createTestSet(ImageWriter w) {
    List l = new LinkedList();

    Test.iw = w;

    // variate compression types
    BMPImageWriteParam param = (BMPImageWriteParam)iw.getDefaultWriteParam();
    param.setCompressionMode(ImageWriteParam.MODE_EXPLICIT);
    param.setCompressionType("BI_RGB");
    if (param.canWriteCompressed()) {
        String[] cTypes = param.getCompressionTypes();
        String[] cDescr = param.getCompressionQualityDescriptions();
        float[] cValues = param.getCompressionQualityValues();

        if (cDescr == null) {
            System.out.println("There are no compression quality description!");
        } else {
            for(int i=0; i<cDescr.length; i++) {
                System.out.println("Quality[" + i + "]=\""+cDescr[i]+"\"");
            }
        }
        if (cValues == null) {
            System.out.println("There are no compression quality values!");
        } else {
            for(int i=0; i<cValues.length; i++) {
                System.out.println("Value["+i+"]=\""+cValues[i]+"\"");
            }
        }

        for(int i=0; i<cTypes.length; i++) {
            String compressionType = cTypes[i];
            BufferedImage img = null;

            int type = BufferedImage.TYPE_INT_BGR;
            try {
                img = createTestImage(type);
                if (compressionType.equals("BI_RLE8")) {
                    img = createTestImage2(8, DataBuffer.TYPE_BYTE);
                } else if (compressionType.equals("BI_RLE4")) {
                    img = createTestImage3(4, DataBuffer.TYPE_BYTE);
                } else if (compressionType.equals("BI_BITFIELDS")) {
                    img = createTestImage4(32);
                }

            } catch (IOException ex) {
                throw new RuntimeException("Unable to create test image");
            }
            BMPImageWriteParam p = (BMPImageWriteParam)iw.getDefaultWriteParam();
            System.out.println("Current compression type is \""+cTypes[i]+"\"");
            p.setCompressionMode(ImageWriteParam.MODE_EXPLICIT);
            p.setCompressionType(compressionType);

            IIOMetadata md = iw.getDefaultImageMetadata(new ImageTypeSpecifier(img), p);

            l.add( new Test(p, md, img));
        }
    }
    //     }
    return l.iterator();

}

方法所在类

javax.imageio.plugins.bmp.BMPImageWriteParam