sparrowwallet/usb4java
sparrowwallet/usb4java
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Read multiple chunks if necessary

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This commit is contained in:
Klaus Reimer 2013-02-24 16:02:56 +01:00
parent 7df2071181
commit 1887a0d89e
1 changed files with 13 additions and 7 deletions
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20
src/main/java/de/ailis/usb4java/support/IrpQueue.java
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@ -141,13 +141,19 @@ public final class IrpQueue extends AbstractIrpQueue<UsbIrp>
final int size = Math.min(len, descriptor.wMaxPacketSize()
& 0xffff);
final ByteBuffer buffer = ByteBuffer.allocateDirect(size);
final int result = usb_bulk_read(this.device.open(),
descriptor.bEndpointAddress(), buffer, getConfig().getTimeout());
if (result < 0) throw new Usb4JavaException(
"Unable to read from interrupt endpoint", result);
buffer.rewind();
buffer.get(data, offset, result);
return result;
int read = 0;
while (read < len)
{
buffer.rewind();
final int result = usb_bulk_read(this.device.open(),
descriptor.bEndpointAddress(), buffer, getConfig().getTimeout());
if (result < 0) throw new Usb4JavaException(
"Unable to read from interrupt endpoint", result);
buffer.rewind();
buffer.get(data, offset + read, result);
read += result;
}
return read;
}
/**