Java APIを使用してHEIC画像の読み取りと変換プロセスを簡素化

Openize.HEIC for JavaをMaven経由でインストール

<repositories>
    <repository>
        <id>AsposeJavaRepo</id>
        <name>Aspose Java Repository</name>
        <url>https://releases.aspose.com/java/repo/</url>
    </repository>
</repositories>

<dependencies>
    <dependency>
        <groupId>openize</groupId>
        <artifactId>openize-heic</artifactId>
        <version>25.4</version>
    </dependency>

    
    <dependency>
        <groupId>openize</groupId>
        <artifactId>openize-heic</artifactId>
        <version>25.4</version>
        <classifier>javadoc</classifier>
    </dependency>
</dependencies>

.heicファイルをArgb32データを持つint配列に読み込む

 
try (IOFileStream fs = new IOFileStream("filename.heic", IOMode.READ))
{
    HeicImage image = HeicImage.load(fs);
    int[] pixels = image.getInt32Array(openize.heic.decoder.PixelFormat.Argb32);
}

HEICファイルをBufferedImageに読み込む

 
try (IOFileStream fs = new IOFileStream("filename.heic", IOMode.READ))
{
    HeicImage image = HeicImage.load(fs);
     
    int[] pixels = frames.get(key).getInt32Array(PixelFormat.Argb32);
    var width = (int)image.Width;
    var height = (int)image.Height;
    
    BufferedImage image2 = new BufferedImage(width, height, BufferedImage.TYPE_INT_ARGB);
    image2.setRGB(0, 0, width, height, pixels, 0, width);
    ImageIO.write(image2, "JPEG", new File("output.jpg"));
}

HEICファイルをBufferedImageに読み込む方法

 
try (IOFileStream fs = new IOFileStream("filename.heic", IOMode.READ))
{
    HeicImage image = HeicImage.load(fs);
     
    int[] pixels = frames.get(key).getInt32Array(PixelFormat.Argb32);
    var width = (int)image.Width;
    var height = (int)image.Height;
    
    BufferedImage image2 = new BufferedImage(width, height, BufferedImage.TYPE_INT_ARGB);
    image2.setRGB(0, 0, width, height, pixels, 0, width);
    ImageIO.write(image2, "PNG", new File("output.png"));
}

.heicコレクションを.pngファイルのセットに変換する

 
try (IOFileStream fs = new IOFileStream("filename.heic", IOMode.READ))
{
    HeicImage image = HeicImage.load(fs);

    final Map frames = image.getFrames();
    for (Long key : frames.keySet())
    {
        int width = (int)frames.get(key).getWidth();
        int height = (int)frames.get(key).getHeight();
        int[] pixels = frames.get(key).getInt32Array(PixelFormat.Argb32);

        BufferedImage image2 = new BufferedImage(width, height, BufferedImage.TYPE_INT_ARGB);
        image2.setRGB(0, 0, width, height, pixels, 0, width);
        ImageIO.write(image2, "PNG", new File("output"+key+".png"));
    }
}