[Gdal-dev] GDAL data writing problems (using Java SWIG bindings)

[Daniele Romagnoli]

Hi list,

I'm unsuccessfully trying to write some raster data using  GDAL Java
Bindings, by mean of the writeRaster_Direct method.

This is my code:
------------------------------------------------------------
final File outFile = new File("d:\\DatiPlugin\\geotiff\\mysample22.tif");
final BufferedImage im = ImageIO.read(new
File("D:\\DatiPlugin\\bogota.tif"));

Driver gtiffDriver = gdal.GetDriverByName("GTiff");
final int width = im.getWidth();
final int height = im.getHeight ();

Dataset ds = gtiffDriver.Create(outFile.getAbsolutePath(), width,
height, 1, gdalconstConstants.GDT_Byte,null);

RenderedOp b0 = BandSelectDescriptor.create(im, new int[] { 0 }, null);

ByteBuffer bb0 = ByteBuffer.wrap(((DataBufferByte)
b0.getData().getDataBuffer()).getData(0));

ByteBuffer scanline;
byte  miniBuffer[] = new byte [width];

for (int i=0; i<height;i++){
   bb0.get(miniBuffer, width*i, width);
   scanline = ByteBuffer.wrap(miniBuffer);
   ds.GetRasterBand(1).WriteRaster_Direct(0,height*i,width,1,width,1,
gdalconstConstants.GDT_Byte,scanline);
}


ds.FlushCache();
ds.delete();
------------------------------------------------------------



This code, generates this exception:
-------------------------------------------------------
An unexpected exception has been detected in native code outside the VM.
Unexpected Signal : EXCEPTION_ACCESS_VIOLATION (0xc0000005) occurred
at PC=0x7C342EEE
Function=memcpy+0x33
Library=C:\WINDOWS\system32\MSVCR71.dll
Source file = F:\VS70Builds\3052\vc\crtbld\crt\src\intel\memcpy.asm : 171


Current Java thread:
   at org.gdal.gdal.gdalJNI.Band_WriteRaster_Direct (Native Method)
   at org.gdal.gdal.Band.WriteRaster_Direct(Band.java:127)
   at javax.imageio.plugins.jp2k.TestJaiRead.testWrite(TestJaiRead.java:178)
   at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
   at sun.reflect.NativeMethodAccessorImpl.invoke(
NativeMethodAccessorImpl.java:39)
   at sun.reflect.DelegatingMethodAccessorImpl.invoke(
DelegatingMethodAccessorImpl.java:25)
   at java.lang.reflect.Method.invoke (Method.java:324)
   at junit.framework.TestCase.runTest(TestCase.java:154)
   at junit.framework.TestCase.runBare(TestCase.java:127)
   at junit.framework.TestResult$1.protect(TestResult.java:106)
   at junit.framework.TestResult.runProtected (TestResult.java:124)
   at junit.framework.TestResult.run(TestResult.java:109)
   at junit.framework.TestCase.run(TestCase.java:118)
   at junit.framework.TestSuite.runTest(TestSuite.java:208)
   at junit.framework.TestSuite.run (TestSuite.java:203)
   at junit.textui.TestRunner.doRun(TestRunner.java:116)
   at junit.textui.TestRunner.doRun(TestRunner.java:109)
   at junit.textui.TestRunner.run(TestRunner.java:72)
   at junit.textui.TestRunner.run (TestRunner.java:57)
   at javax.imageio.plugins.jp2k.TestJaiRead.main(TestJaiRead.java:76)
------------------------------------------


Does anybody have any clues about what I'm doing wrong?

Moreover, I have one question. Did anybody tried to write data using
the java bindings directly?  I mean without using DataSet CreateCopy or the
like but feeding data directly into a RasterBand?


Best regards,
Daniele









-- 
Best Regards,
Daniele
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