Examples with ImageOutputStream javax.imageio.stream.ImageOutputStream used on opensource projects

Example 56 with ImageOutputStream

use of javax.imageio.stream.ImageOutputStream in project jdk8u_jdk by JetBrains.

the class EndWriteSequenceTest method main.

public static void main(String[] args) throws IOException {
    ImageWriter w = ImageIO.getImageWritersByFormatName("GIF").next();
    boolean gotCorrectException = false;
    /**
         * check statement: "Throws: IllegalStateException -
         * if the output has not been set ...."
         */
    try {
        // to be shure that output is null
        w.reset();
        w.endWriteSequence();
    } catch (IllegalStateException e) {
        gotCorrectException = true;
    } catch (Throwable e) {
        throw new RuntimeException("Test failed.", e);
    }
    if (!gotCorrectException) {
        throw new RuntimeException("Test failed.");
    }
    /**
         * set up output stream
         */
    ByteArrayOutputStream baos = new ByteArrayOutputStream();
    ImageOutputStream ios = ImageIO.createImageOutputStream(baos);
    w.setOutput(ios);
    /**
         * check statement: "Throws: IllegalStateException -
         * if .... prepareWriteSequence has not been called.
         */
    gotCorrectException = false;
    try {
        w.endWriteSequence();
    } catch (IllegalStateException e) {
        gotCorrectException = true;
    } catch (Throwable e) {
        throw new RuntimeException("Test failed.", e);
    }
    if (!gotCorrectException) {
        throw new RuntimeException("Test failed.");
    }
    System.out.println("Test passed.");
}

Example 57 with ImageOutputStream

use of javax.imageio.stream.ImageOutputStream in project jdk8u_jdk by JetBrains.

the class OddPaletteTest method doTest.

private static void doTest(BufferedImage src) {
    ImageWriter w = ImageIO.getImageWritersByFormatName("GIF").next();
    if (w == null) {
        throw new RuntimeException("No writer available!");
    }
    try {
        ByteArrayOutputStream baos = new ByteArrayOutputStream();
        ImageOutputStream ios = ImageIO.createImageOutputStream(baos);
        w.setOutput(ios);
        w.write(src);
    } catch (IOException e) {
        throw new RuntimeException("Test failed.", e);
    } catch (IllegalArgumentException e) {
        throw new RuntimeException("Test failed.", e);
    }
}

Example 58 with ImageOutputStream

use of javax.imageio.stream.ImageOutputStream in project jdk8u_jdk by JetBrains.

the class CreateMemoryCacheOutputStream method main.

public static void main(String[] args) {
    ImageIO.setUseCache(false);
    OutputStream os = new ByteArrayOutputStream();
    ImageOutputStream stream = null;
    try {
        stream = ImageIO.createImageOutputStream(os);
    } catch (Exception e) {
        throw new RuntimeException("Got exception " + e);
    }
    if (stream == null) {
        throw new RuntimeException("Got null stream!");
    }
}

Example 59 with ImageOutputStream

use of javax.imageio.stream.ImageOutputStream in project jdk8u_jdk by JetBrains.

the class DeleteOnExitTest method main.

public static void main(String[] args) throws IOException {
    ByteArrayInputStream is = new ByteArrayInputStream(new byte[100]);
    ByteArrayOutputStream os = new ByteArrayOutputStream();
    String tmp = System.getProperty("java.io.tmpdir", ".");
    System.out.println("tmp: " + tmp);
    // count number of files before test
    ImageIO.setUseCache(true);
    ImageIO.setCacheDirectory(new File(tmp));
    File tmpDir = ImageIO.getCacheDirectory();
    System.out.println("tmpDir is " + tmpDir);
    int fnum_before = tmpDir.list().length;
    System.out.println("Files before test: " + fnum_before);
    ImageInputStream iis = ImageIO.createImageInputStream(is);
    System.out.println("iis = " + iis);
    ImageInputStream iis2 = ImageIO.createImageInputStream(is);
    ImageOutputStream ios = ImageIO.createImageOutputStream(os);
    System.out.println("ios = " + ios);
    ImageOutputStream ios2 = ImageIO.createImageOutputStream(os);
    iis2.close();
    ios2.close();
    int fnum_after = tmpDir.list().length;
    System.out.println("Files after test: " + fnum_after);
    if (fnum_before == fnum_after) {
        throw new RuntimeException("Test failed: cache was not used.");
    }
}

Example 60 with ImageOutputStream

use of javax.imageio.stream.ImageOutputStream in project jdk8u_jdk by JetBrains.

the class MemoryCacheImageOutputStreamTest method main.

public static void main(String[] args) throws IOException {
    try {
        MemoryCacheImageOutputStream stream = new MemoryCacheImageOutputStream(new ByteArrayOutputStream());
        // or write anything, for that matter
        stream.write(0);
        stream.flush();
    } catch (Exception e) {
        throw new RuntimeException("Error flushing stream: " + e);
    }
    ByteArrayOutputStream os = new ByteArrayOutputStream();
    ImageOutputStream ios = new MemoryCacheImageOutputStream(os);
    byte[] b = new byte[30 * 256];
    byte byteVal = (byte) 0;
    for (int i = 0; i < b.length; i++) {
        b[i] = byteVal++;
    }
    // Write 261,120 bytes
    for (int i = 0; i < 34; i++) {
        ios.write(b);
    }
    // Scatter 256 values at positions 1000, 2000, ...
    // Using both write(int) and write(byte[])
    byte[] buf = new byte[1];
    for (int i = 0; i < 256; i += 2) {
        ios.seek(1000 * i);
        ios.write(i);
        ios.seek(1000 * (i + 1));
        buf[0] = (byte) (i + 1);
        ios.write(buf);
    }
    // Re-read scattered values
    for (int i = 0; i < 256; i++) {
        ios.seek(1000 * i);
        int val = ios.read();
        if (val != i) {
            System.out.println("Got bad value (1) at pos = " + (1000 * i));
        }
    }
    // Discard two buffers and re-read scattered values
    ios.flushBefore(2 * 8192);
    for (int i = 0; i < 256; i++) {
        long pos = 1000 * i;
        if (pos >= 2 * 8192) {
            ios.seek(pos);
            int val = ios.read();
            if (val != i) {
                System.out.println("Got bad value (2) at pos = " + (1000 * i));
            }
        }
    }
    ios.close();
    byte[] data = os.toByteArray();
    for (int i = 0; i < data.length; i++) {
        byte val = data[i];
        if ((i < 256000) && (i % 1000) == 0) {
            if (val != (byte) (i / 1000)) {
                System.out.println("Got bad value (3) at pos = " + i);
            }
        } else {
            byte gval = (byte) ((i % (30 * 256)) % 256);
            if (val != gval) {
                System.out.println("Got bad value (4) at pos = " + i + "(got " + (val & 0xff) + " wanted " + (gval & 0xff) + ")");
            }
        }
    }
}