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I have a BufferedImage I'm trying to write to a jpeg file, but my Java program throws an exception. I'm able to successfully save the same buffer to a gif and png. I've tried looking around on Google for solutions, but to no avail.
Code:
File outputfile = new File("tiles/" + row + ":" + col + ".jpg"); try { ImageIO.write(mapBufferTiles[row][col], "jpg", outputfile); } catch (IOException e) { outputfile.delete(); throw new RuntimeException(e); } Exception:
Exception in thread "main" java.lang.RuntimeException: javax.imageio.IIOException: Invalid argument to native writeImage at MapServer.initMapBuffer(MapServer.java:90) at MapServer.<init>(MapServer.java:24) at MapServer.main(MapServer.java:118) Caused by: javax.imageio.IIOException: Invalid argument to native writeImage at com.sun.imageio.plugins.jpeg.JPEGImageWriter.writeImage(Native Method) at com.sun.imageio.plugins.jpeg.JPEGImageWriter.writeOnThread(JPEGImageWriter.java:1055) at com.sun.imageio.plugins.jpeg.JPEGImageWriter.write(JPEGImageWriter.java:357) at javax.imageio.ImageWriter.write(ImageWriter.java:615) at javax.imageio.ImageIO.doWrite(ImageIO.java:1602) at javax.imageio.ImageIO.write(ImageIO.java:1526) at MapServer.initMapBuffer(MapServer.java:87) ... 2 more 
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imageio package. Image I/O has built-in support for GIF, PNG, JPEG, BMP, and WBMP. Image I/O is also extensible so that developers or administrators can "plug-in" support for additional formats. For example, plug-ins for TIFF and JPEG 2000 are separately available.
The ImageIO. write method calls the code that implements PNG writing a “PNG writer plug-in”. The term plug-in is used since Image I/O is extensible and can support a wide range of formats. But the following standard image format plugins : JPEG, PNG, GIF, BMP and WBMP are always be present.
ImageIO. A class containing static convenience methods for locating ImageReader s and ImageWriter s, and performing simple encoding and decoding. ImageReader. An abstract superclass for parsing and decoding of images.
A problem with this solution is that ImageIO is not thread safe, which is why I recommend using an ExecutorService with a single thread (or switching to JDeli which is thread-safe). In order for your application to end successfully, you will need to wait for any images to finish being output.
OpenJDK does not have a native JPEG encoder, try using Sun's JDK, or using a library (such as JAI
AFAIK, regarding the "pinkish tint", Java saves the JPEG as ARGB (still with transparency information). Most viewers, when opening, assume the four channels must correspond to a CMYK (not ARGB) and thus the red tint.
If you import the image back to Java, the transparency is still there, though.
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I had the same issue in OpenJDK 7 and I managed to get around this exception by using an imageType of TYPE_3BYTE_BGR instead of TYPE_4BYTE_ABGR using the same OpenJDK.
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