Examples with GIFStreamMetadata com.sun.imageio.plugins.gif.GIFStreamMetadata used on opensource projects

Example 1 with GIFStreamMetadata

use of com.sun.imageio.plugins.gif.GIFStreamMetadata in project jdk8u_jdk by JetBrains.

the class LogicalScreenDimensionTest method main.

public static void main(String[] args) throws IOException {
    String format = "GIF";
    ImageWriter writer = ImageIO.getImageWritersByFormatName(format).next();
    if (writer == null) {
        throw new RuntimeException("No available writers for " + format);
    }
    BufferedImage img = createTestImage(100, 100, BufferedImage.TYPE_BYTE_GRAY);
    ImageWriteParam p = writer.getDefaultWriteParam();
    ImageTypeSpecifier type = ImageTypeSpecifier.createFromRenderedImage(img);
    IIOMetadata inImageMetadata = writer.getDefaultImageMetadata(type, p);
    IIOMetadata inStreamMetadata = writer.getDefaultStreamMetadata(p);
    // write and read image
    ByteArrayOutputStream baos = new ByteArrayOutputStream();
    ImageOutputStream ios = ImageIO.createImageOutputStream(baos);
    writer.setOutput(ios);
    writer.write(inStreamMetadata, new IIOImage(img, null, inImageMetadata), p);
    ios.flush();
    ios.close();
    // read result
    ByteArrayInputStream bais = new ByteArrayInputStream(baos.toByteArray());
    ImageInputStream iis = ImageIO.createImageInputStream(bais);
    ImageReader reader = ImageIO.getImageReader(writer);
    reader.setInput(iis);
    IIOMetadata outStreamMetadata = reader.getStreamMetadata();
    GIFStreamMetadata gifStreamMetadata = (GIFStreamMetadata) outStreamMetadata;
    if (gifStreamMetadata.logicalScreenWidth != img.getWidth() || gifStreamMetadata.logicalScreenHeight != img.getHeight()) {
        throw new RuntimeException("Test failed due to wrong logical screen dimension.");
    }
}