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Merges master CF2C0CA, EEAD22F, 5F2D8C8, 22D3871, and 6F2A7E8 - updates

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libusb transfer processing and shutdown/cancel management of transfers
in progress.
This commit is contained in:
denny
2016-02-27 09:45:47 -05:00
parent ece555dead
commit 63cea60c42
3 changed files with 363 additions and 322 deletions
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235
src/source/tuner/airspy/AirspyTunerController.java
View File

@@ -262,6 +262,30 @@ public class AirspyTunerController extends TunerController
}
}
public static String getTransferStatus( int status )
{
switch( status )
{
case 0:
return "TRANSFER COMPLETED (0)";
case 1:
return "TRANSFER ERROR (1)";
case 2:
return "TRANSFER TIMED OUT (2)";
case 3:
return "TRANSFER CANCELLED (3)";
case 4:
return "TRANSFER STALL (4)";
case 5:
return "TRANSFER NO DEVICE (5)";
case 6:
return "TRANSFER OVERFLOW (6)";
default:
return "UNKNOWN TRANSFER STATUS (" + status + ")";
}
}
@Override
public void apply( TunerConfiguration config ) throws SourceException
{
@@ -1192,17 +1216,20 @@ public class AirspyTunerController extends TunerController
*/
public void addListener( Listener<ComplexBuffer> listener )
{
mComplexBufferBroadcaster.addListener( listener );
if( mBufferProcessor == null || !mBufferProcessor.isRunning() )
synchronized ( mComplexBufferBroadcaster )
{
mBufferProcessor = new BufferProcessor();
mComplexBufferBroadcaster.addListener( listener );
Thread thread = new Thread( mBufferProcessor );
thread.setDaemon( true );
thread.setName( "Airspy Buffer Processor" );
if( mBufferProcessor == null || !mBufferProcessor.isRunning() )
{
mBufferProcessor = new BufferProcessor();
thread.start();
Thread thread = new Thread( mBufferProcessor );
thread.setDaemon( true );
thread.setName( "Airspy Buffer Processor" );
thread.start();
}
}
}
@@ -1212,11 +1239,14 @@ public class AirspyTunerController extends TunerController
*/
public void removeListener( Listener<ComplexBuffer> listener )
{
mComplexBufferBroadcaster.removeListener( listener );
if( !mComplexBufferBroadcaster.hasListeners() )
synchronized ( mComplexBufferBroadcaster )
{
mBufferProcessor.stop();
mComplexBufferBroadcaster.removeListener( listener );
if( !mComplexBufferBroadcaster.hasListeners() )
{
mBufferProcessor.stop();
}
}
}
@@ -1227,9 +1257,12 @@ public class AirspyTunerController extends TunerController
public class BufferProcessor implements Runnable, TransferCallback
{
private ScheduledFuture<?> mSampleDispatcherTask;
private CopyOnWriteArrayList<Transfer> mTransfers;
private LinkedTransferQueue<Transfer> mAvailableTransfers;
private LinkedTransferQueue<Transfer> mTransfersInProgress = new LinkedTransferQueue<>();
private AtomicBoolean mRunning = new AtomicBoolean();
private ByteBuffer mLibUsbHandlerStatus;
private boolean mCancel = false;
@Override
public void run()
{
@@ -1237,33 +1270,64 @@ public class AirspyTunerController extends TunerController
{
prepareTransfers();
for( Transfer transfer: mTransfers )
{
int result = LibUsb.submitTransfer( transfer );
if( result != LibUsb.SUCCESS )
{
mLog.error( "error submitting transfer [" +
LibUsb.errorName( result ) + "]" );
break;
}
}
mSampleDispatcherTask = mThreadPoolManager.scheduleFixedRate(
ThreadType.SOURCE_SAMPLE_PROCESSING, new BufferDispatcher(),
20, TimeUnit.MILLISECONDS );
while( mRunning.get() )
mLibUsbHandlerStatus = ByteBuffer.allocateDirect( 4 );
List<Transfer> transfers = new ArrayList<>();
mCancel = false;
while( mRunning.get() )
{
ByteBuffer completed = ByteBuffer.allocateDirect( 4 );
mAvailableTransfers.drainTo( transfers );
for( Transfer transfer: transfers )
{
int result = LibUsb.submitTransfer( transfer );
if( result == LibUsb.SUCCESS )
{
mTransfersInProgress.add( transfer );
}
else
{
mLog.error( "error submitting transfer [" +
LibUsb.errorName( result ) + "]" );
}
}
int result = LibUsb.handleEventsTimeoutCompleted(
null, USB_TIMEOUT_MS, completed.asIntBuffer() );
null, USB_TIMEOUT_MS, mLibUsbHandlerStatus.asIntBuffer() );
if( result != LibUsb.SUCCESS )
{
mLog.error( "error handling events for libusb" );
}
transfers.clear();
mLibUsbHandlerStatus.rewind();
}
if( mCancel )
{
for( Transfer transfer: mTransfersInProgress )
{
LibUsb.cancelTransfer( transfer );
}
int result = LibUsb.handleEventsTimeoutCompleted( null,
USB_TIMEOUT_MS, mLibUsbHandlerStatus.asIntBuffer() );
if( result != LibUsb.SUCCESS )
{
mLog.error( "error handling events for libusb during cancel" );
}
mLibUsbHandlerStatus.rewind();
}
}
}
@@ -1273,10 +1337,10 @@ public class AirspyTunerController extends TunerController
*/
public void stop()
{
mCancel = true;
if( mRunning.compareAndSet( true, false ) )
{
cancel();
if( mSampleDispatcherTask != null )
{
mSampleDispatcherTask.cancel( true );
@@ -1296,66 +1360,39 @@ public class AirspyTunerController extends TunerController
@Override
public void processTransfer( Transfer transfer )
{
if( transfer.status() == LibUsb.TRANSFER_COMPLETED )
{
ByteBuffer buffer = transfer.buffer();
byte[] data = new byte[ transfer.actualLength() ];
buffer.get( data );
buffer.rewind();
mFilledBuffers.add( data );
if( !isRunning() )
{
LibUsb.cancelTransfer( transfer );
}
}
mTransfersInProgress.remove( transfer );
switch( transfer.status() )
{
case LibUsb.TRANSFER_COMPLETED:
/* resubmit the transfer */
int result = LibUsb.submitTransfer( transfer );
if( result != LibUsb.SUCCESS )
case LibUsb.TRANSFER_STALL:
if( transfer.actualLength() > 0 )
{
mLog.error( "couldn't resubmit buffer transfer to tuner" );
LibUsb.freeTransfer( transfer );
mTransfers.remove( transfer );
ByteBuffer buffer = transfer.buffer();
byte[] data = new byte[ transfer.actualLength() ];
buffer.get( data );
buffer.rewind();
if( isRunning() )
{
mFilledBuffers.add( data );
}
}
break;
case LibUsb.TRANSFER_CANCELLED:
/* free the transfer and remove it */
LibUsb.freeTransfer( transfer );
mTransfers.remove( transfer );
break;
default:
/* unexpected error */
mLog.error( "transfer error" );
mLog.error( "transfer error [" +
getTransferStatus( transfer.status() ) +
"] transferred actual: " + transfer.actualLength() );
}
}
private void cancel()
{
for( Transfer transfer: mTransfers )
{
LibUsb.cancelTransfer( transfer );
}
ByteBuffer completed = ByteBuffer.allocateDirect( 4 );
int result = LibUsb.handleEventsTimeoutCompleted(
null, USB_TIMEOUT_MS, completed.asIntBuffer() );
if( result != LibUsb.SUCCESS )
{
mLog.error( "error handling usb events during cancel [" +
LibUsb.errorName( result ) + "]" );
}
}
mAvailableTransfers.add( transfer );
}
/**
* Prepares (allocates) a set of transfer buffers for use in
@@ -1363,30 +1400,28 @@ public class AirspyTunerController extends TunerController
*/
private void prepareTransfers() throws LibUsbException
{
mTransfers = new CopyOnWriteArrayList<Transfer>();
for( int x = 0; x < TRANSFER_BUFFER_POOL_SIZE; x++ )
if( mAvailableTransfers == null )
{
Transfer transfer = LibUsb.allocTransfer();
mAvailableTransfers = new LinkedTransferQueue<>();
for( int x = 0; x < TRANSFER_BUFFER_POOL_SIZE; x++ )
{
Transfer transfer = LibUsb.allocTransfer();
if( transfer == null )
{
throw new LibUsbException( "couldn't allocate transfer",
LibUsb.ERROR_NO_MEM );
}
final ByteBuffer buffer =
ByteBuffer.allocateDirect( mBufferSize );
LibUsb.fillBulkTransfer( transfer,
mDeviceHandle,
USB_ENDPOINT,
buffer,
BufferProcessor.this,
"Buffer #" + x,
USB_TIMEOUT_MS );
mTransfers.add( transfer );
if( transfer == null )
{
throw new LibUsbException( "couldn't allocate transfer",
LibUsb.ERROR_NO_MEM );
}
final ByteBuffer buffer =
ByteBuffer.allocateDirect( mBufferSize );
LibUsb.fillBulkTransfer( transfer, mDeviceHandle, USB_ENDPOINT,
buffer, BufferProcessor.this, "Buffer", USB_TIMEOUT_MS );
mAvailableTransfers.add( transfer );
}
}
}
}

216
src/source/tuner/hackrf/HackRFTunerController.java
View File

@@ -56,6 +56,7 @@ import java.nio.ByteBuffer;
import java.nio.ByteOrder;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.List;
import java.util.concurrent.CopyOnWriteArrayList;
import java.util.concurrent.LinkedTransferQueue;
import java.util.concurrent.ScheduledFuture;
@@ -91,7 +92,7 @@ public class HackRFTunerController extends TunerController
private final static Logger mLog =
LoggerFactory.getLogger( HackRFTunerController.class );
public final static long TIMEOUT_US = 1000000l; //uSeconds
public final static long USB_TIMEOUT_US = 1000000l; //uSeconds
public static final byte USB_ENDPOINT = (byte)0x81;
public static final byte USB_INTERFACE = (byte)0x0;
@@ -394,7 +395,7 @@ public class HackRFTunerController extends TunerController
(short)value,
(short)index,
buffer,
TIMEOUT_US );
USB_TIMEOUT_US );
if( transferred < 0 )
{
@@ -467,7 +468,7 @@ public class HackRFTunerController extends TunerController
(short)value,
(short)index,
buffer,
TIMEOUT_US );
USB_TIMEOUT_US );
if( transferred < 0 )
{
@@ -886,17 +887,20 @@ public class HackRFTunerController extends TunerController
*/
public void addListener( Listener<ComplexBuffer> listener )
{
mComplexBufferBroadcaster.addListener( listener );
if( mBufferProcessor == null || !mBufferProcessor.isRunning() )
synchronized ( mComplexBufferBroadcaster )
{
mBufferProcessor = new BufferProcessor();
mComplexBufferBroadcaster.addListener( listener );
Thread thread = new Thread( mBufferProcessor );
thread.setDaemon( true );
thread.setName( "HackRF Sample Processor" );
if( mBufferProcessor == null || !mBufferProcessor.isRunning() )
{
mBufferProcessor = new BufferProcessor();
thread.start();
Thread thread = new Thread( mBufferProcessor );
thread.setDaemon( true );
thread.setName( "HackRF Sample Processor" );
thread.start();
}
}
}
@@ -906,11 +910,14 @@ public class HackRFTunerController extends TunerController
*/
public void removeListener( Listener<ComplexBuffer> listener )
{
mComplexBufferBroadcaster.removeListener( listener );
if( !mComplexBufferBroadcaster.hasListeners() )
synchronized ( mComplexBufferBroadcaster )
{
mBufferProcessor.stop();
mComplexBufferBroadcaster.removeListener( listener );
if( !mComplexBufferBroadcaster.hasListeners() )
{
mBufferProcessor.stop();
}
}
}
@@ -921,46 +928,78 @@ public class HackRFTunerController extends TunerController
public class BufferProcessor implements Runnable, TransferCallback
{
private ScheduledFuture<?> mSampleDispatcherTask;
private CopyOnWriteArrayList<Transfer> mTransfers;
private AtomicBoolean mRunning = new AtomicBoolean();
private LinkedTransferQueue<Transfer> mAvailableTransfers;
private LinkedTransferQueue<Transfer> mTransfersInProgress = new LinkedTransferQueue<>();
private ByteBuffer mLibUsbHandlerStatus;
private boolean mCancel = false;
@Override
public void run()
{
if( mRunning.compareAndSet( false, true ) )
{
mLog.info( "starting HackRF sample fetch thread" );
prepareTransfers();
for( Transfer transfer: mTransfers )
{
int result = LibUsb.submitTransfer( transfer );
if( result != LibUsb.SUCCESS )
{
mLog.error( "error submitting transfer [" +
LibUsb.errorName( result ) + "]" );
break;
}
}
mSampleDispatcherTask = mThreadPoolManager.scheduleFixedRate(
ThreadType.SOURCE_SAMPLE_PROCESSING, new BufferDispatcher(),
20, TimeUnit.MILLISECONDS );
mLibUsbHandlerStatus = ByteBuffer.allocateDirect( 4 );
List<Transfer> transfers = new ArrayList<>();
mCancel = false;
while( mRunning.get() )
{
ByteBuffer completed = ByteBuffer.allocateDirect( 4 );
mAvailableTransfers.drainTo( transfers );
for( Transfer transfer: transfers )
{
int result = LibUsb.submitTransfer( transfer );
if( result == LibUsb.SUCCESS )
{
mTransfersInProgress.add( transfer );
}
else
{
mLog.error( "error submitting transfer [" +
LibUsb.errorName( result ) + "]" );
}
}
int result = LibUsb.handleEventsTimeoutCompleted(
null, TIMEOUT_US, completed.asIntBuffer() );
null, USB_TIMEOUT_US, mLibUsbHandlerStatus.asIntBuffer() );
if( result != LibUsb.SUCCESS )
{
mLog.error( "error handling events for libusb" );
}
transfers.clear();
mLibUsbHandlerStatus.rewind();
}
if( mCancel )
{
for( Transfer transfer: mTransfersInProgress )
{
LibUsb.cancelTransfer( transfer );
}
int result = LibUsb.handleEventsTimeoutCompleted( null,
USB_TIMEOUT_US, mLibUsbHandlerStatus.asIntBuffer() );
if( result != LibUsb.SUCCESS )
{
mLog.error( "error cancelling transfers in progress" );
}
mLibUsbHandlerStatus.rewind();
}
}
}
@@ -969,12 +1008,10 @@ public class HackRFTunerController extends TunerController
*/
public void stop()
{
mCancel = true;
if( mRunning.compareAndSet( true, false ) )
{
mLog.info( "stopping HackRF sample fetch thread" );
cancel();
if( mSampleDispatcherTask != null )
{
mSampleDispatcherTask.cancel( true );
@@ -994,41 +1031,29 @@ public class HackRFTunerController extends TunerController
@Override
public void processTransfer( Transfer transfer )
{
if( transfer.status() == LibUsb.TRANSFER_COMPLETED )
{
ByteBuffer buffer = transfer.buffer();
byte[] data = new byte[ transfer.actualLength() ];
buffer.get( data );
buffer.rewind();
mFilledBuffers.add( data );
if( !isRunning() )
{
LibUsb.cancelTransfer( transfer );
}
}
mTransfersInProgress.remove( transfer );
switch( transfer.status() )
{
case LibUsb.TRANSFER_COMPLETED:
/* resubmit the transfer */
int result = LibUsb.submitTransfer( transfer );
if( result != LibUsb.SUCCESS )
case LibUsb.TRANSFER_STALL:
if( transfer.actualLength() > 0 )
{
mLog.error( "couldn't resubmit buffer transfer to tuner" );
LibUsb.freeTransfer( transfer );
mTransfers.remove( transfer );
ByteBuffer buffer = transfer.buffer();
byte[] data = new byte[ transfer.actualLength() ];
buffer.get( data );
buffer.rewind();
if( isRunning() )
{
mFilledBuffers.add( data );
}
}
break;
case LibUsb.TRANSFER_CANCELLED:
/* free the transfer and remove it */
LibUsb.freeTransfer( transfer );
mTransfers.remove( transfer );
break;
default:
/* unexpected error */
@@ -1036,26 +1061,9 @@ public class HackRFTunerController extends TunerController
getTransferStatus( transfer.status() ) +
"] transferred actual: " + transfer.actualLength() );
}
}
private void cancel()
{
for( Transfer transfer: mTransfers )
{
LibUsb.cancelTransfer( transfer );
}
ByteBuffer completed = ByteBuffer.allocateDirect( 4 );
int result = LibUsb.handleEventsTimeoutCompleted(
null, TIMEOUT_US, completed.asIntBuffer() );
if( result != LibUsb.SUCCESS )
{
mLog.error( "error handling usb events during cancel [" +
LibUsb.errorName( result ) + "]" );
}
}
mAvailableTransfers.add( transfer );
}
/**
* Prepares (allocates) a set of transfer buffers for use in
@@ -1063,30 +1071,28 @@ public class HackRFTunerController extends TunerController
*/
private void prepareTransfers() throws LibUsbException
{
mTransfers = new CopyOnWriteArrayList<Transfer>();
for( int x = 0; x < TRANSFER_BUFFER_POOL_SIZE; x++ )
if( mAvailableTransfers == null )
{
Transfer transfer = LibUsb.allocTransfer();
mAvailableTransfers = new LinkedTransferQueue<>();
for( int x = 0; x < TRANSFER_BUFFER_POOL_SIZE; x++ )
{
Transfer transfer = LibUsb.allocTransfer();
if( transfer == null )
{
throw new LibUsbException( "couldn't allocate transfer",
LibUsb.ERROR_NO_MEM );
}
final ByteBuffer buffer =
ByteBuffer.allocateDirect( mBufferSize );
LibUsb.fillBulkTransfer( transfer,
mDeviceHandle,
USB_ENDPOINT,
buffer,
BufferProcessor.this,
"Buffer #" + x,
TIMEOUT_US );
mTransfers.add( transfer );
if( transfer == null )
{
throw new LibUsbException( "couldn't allocate transfer",
LibUsb.ERROR_NO_MEM );
}
final ByteBuffer buffer =
ByteBuffer.allocateDirect( mBufferSize );
LibUsb.fillBulkTransfer( transfer, mDeviceHandle,USB_ENDPOINT,
buffer, BufferProcessor.this, "Buffer", USB_TIMEOUT_US );
mAvailableTransfers.add( transfer );
}
}
}
}

234
src/source/tuner/rtl/RTL2832TunerController.java
View File

@@ -27,6 +27,7 @@ import java.nio.charset.Charset;
import java.text.DecimalFormat;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.List;
import java.util.concurrent.CopyOnWriteArrayList;
import java.util.concurrent.LinkedTransferQueue;
import java.util.concurrent.ScheduledFuture;
@@ -71,7 +72,7 @@ public abstract class RTL2832TunerController extends TunerController
public final static int TWO_TO_22_POWER = 4194304;
public final static byte USB_INTERFACE = (byte)0x0;
public final static byte BULK_ENDPOINT_IN = (byte)0x81;
public final static byte USB_BULK_ENDPOINT = (byte)0x81;
public final static byte CONTROL_ENDPOINT_IN =
(byte)( LibUsb.ENDPOINT_IN | LibUsb.REQUEST_TYPE_VENDOR );
public final static byte CONTROL_ENDPOINT_OUT =
@@ -1340,21 +1341,24 @@ public abstract class RTL2832TunerController extends TunerController
*/
public void addListener( Listener<ComplexBuffer> listener )
{
mComplexBufferBroadcaster.addListener( listener );
synchronized( mComplexBufferBroadcaster )
{
mComplexBufferBroadcaster.addListener( listener );
if( mBufferProcessor == null )
{
mBufferProcessor = new BufferProcessor( mThreadPoolManager );
}
if( !mBufferProcessor.isRunning() )
{
Thread thread = new Thread( mBufferProcessor );
thread.setDaemon( true );
thread.setName( "RTL2832 Sample Processor" );
if( mBufferProcessor == null )
{
mBufferProcessor = new BufferProcessor( mThreadPoolManager );
}
if( !mBufferProcessor.isRunning() )
{
Thread thread = new Thread( mBufferProcessor );
thread.setDaemon( true );
thread.setName( "RTL2832 Sample Processor" );
thread.start();
}
thread.start();
}
}
}
/**
@@ -1363,12 +1367,15 @@ public abstract class RTL2832TunerController extends TunerController
*/
public void removeListener( Listener<ComplexBuffer> listener )
{
mComplexBufferBroadcaster.removeListener( listener );
synchronized( mComplexBufferBroadcaster )
{
mComplexBufferBroadcaster.removeListener( listener );
if( !mComplexBufferBroadcaster.hasListeners() )
{
mBufferProcessor.stop();
}
if( !mComplexBufferBroadcaster.hasListeners() )
{
mBufferProcessor.stop();
}
}
}
/**
@@ -1378,10 +1385,13 @@ public abstract class RTL2832TunerController extends TunerController
public class BufferProcessor implements Runnable, TransferCallback
{
private ScheduledFuture<?> mSampleDispatcherTask;
private CopyOnWriteArrayList<Transfer> mTransfers;
private LinkedTransferQueue<Transfer> mAvailableTransfers;
private LinkedTransferQueue<Transfer> mTransfersInProgress = new LinkedTransferQueue<>();
private AtomicBoolean mRunning = new AtomicBoolean();
private ThreadPoolManager mThreadPoolManager;
private ByteBuffer mLibUsbHandlerStatus;
private boolean mCancel = false;
public BufferProcessor( ThreadPoolManager manager )
{
mThreadPoolManager = manager;
@@ -1407,18 +1417,6 @@ public abstract class RTL2832TunerController extends TunerController
prepareTransfers();
for( Transfer transfer: mTransfers )
{
int result = LibUsb.submitTransfer( transfer );
if( result != LibUsb.SUCCESS )
{
mLog.error( "error submitting transfer [" +
LibUsb.errorName( result ) + "]" );
break;
}
}
try
{
mSampleDispatcherTask = mThreadPoolManager.scheduleFixedRate(
@@ -1430,19 +1428,61 @@ public abstract class RTL2832TunerController extends TunerController
mLog.error( "NPE! = tpm null: " + ( mThreadPoolManager == null ), npe );
}
mLibUsbHandlerStatus = ByteBuffer.allocateDirect( 4 );
List<Transfer> transfers = new ArrayList<>();
mCancel = false;
while( mRunning.get() )
{
ByteBuffer completed = ByteBuffer.allocateDirect( 4 );
mAvailableTransfers.drainTo( transfers );
for( Transfer transfer: transfers )
{
int result = LibUsb.submitTransfer( transfer );
if( result == LibUsb.SUCCESS )
{
mTransfersInProgress.add( transfer );
}
else
{
mLog.error( "Error submitting transfer [" +
LibUsb.errorName( result ) + "]" );
}
}
int result = LibUsb.handleEventsTimeoutCompleted(
null, TIMEOUT_US, completed.asIntBuffer() );
null, TIMEOUT_US, mLibUsbHandlerStatus.asIntBuffer() );
if( result != LibUsb.SUCCESS )
{
mLog.error( "error handling events for libusb" );
}
transfers.clear();
mLibUsbHandlerStatus.rewind();
}
if( mCancel )
{
for( Transfer transfer: mTransfersInProgress )
{
LibUsb.cancelTransfer( transfer );
}
int result = LibUsb.handleEventsTimeoutCompleted( null,
TIMEOUT_US, mLibUsbHandlerStatus.asIntBuffer() );
if( result != LibUsb.SUCCESS )
{
mLog.error( "error handling events for libusb during cancel" );
}
mLibUsbHandlerStatus.rewind();
}
}
}
@@ -1451,10 +1491,10 @@ public abstract class RTL2832TunerController extends TunerController
*/
public void stop()
{
mCancel = true;
if( mRunning.compareAndSet( true, false ) )
{
cancel();
if( mSampleDispatcherTask != null )
{
mThreadPoolManager.cancel( mSampleDispatcherTask );
@@ -1473,45 +1513,31 @@ public abstract class RTL2832TunerController extends TunerController
}
@Override
public void processTransfer( Transfer transfer )
public void processTransfer( Transfer transfer )
{
if( transfer.status() == LibUsb.TRANSFER_COMPLETED )
{
ByteBuffer buffer = transfer.buffer();
byte[] data = new byte[ transfer.actualLength() ];
buffer.get( data );
buffer.rewind();
mFilledBuffers.add( data );
mSampleCounter.addAndGet( transfer.actualLength() );
if( !isRunning() )
{
LibUsb.cancelTransfer( transfer );
}
}
mTransfersInProgress.remove( transfer );
switch( transfer.status() )
{
case LibUsb.TRANSFER_COMPLETED:
/* resubmit the transfer */
int result = LibUsb.submitTransfer( transfer );
if( result != LibUsb.SUCCESS )
case LibUsb.TRANSFER_STALL:
if( transfer.actualLength() > 0 )
{
mLog.error( "couldn't resubmit buffer transfer to tuner" );
LibUsb.freeTransfer( transfer );
mTransfers.remove( transfer );
ByteBuffer buffer = transfer.buffer();
byte[] data = new byte[ transfer.actualLength() ];
buffer.get( data );
buffer.rewind();
if( isRunning() )
{
mFilledBuffers.add( data );
}
}
break;
case LibUsb.TRANSFER_CANCELLED:
/* free the transfer and remove it */
LibUsb.freeTransfer( transfer );
mTransfers.remove( transfer );
break;
default:
/* unexpected error */
@@ -1519,33 +1545,9 @@ public abstract class RTL2832TunerController extends TunerController
getTransferStatus( transfer.status() ) +
"] transferred actual: " + transfer.actualLength() );
}
}
private void cancel()
{
for( Transfer transfer: mTransfers )
{
try
{
LibUsb.cancelTransfer( transfer );
}
catch( IllegalStateException ise )
{
//Do nothing, the transfer pointer wasn't initialized
}
}
ByteBuffer completed = ByteBuffer.allocateDirect( 4 );
int result = LibUsb.handleEventsTimeoutCompleted(
null, TIMEOUT_US, completed.asIntBuffer() );
if( result != LibUsb.SUCCESS )
{
mLog.error( "error handling usb events during cancel [" +
LibUsb.errorName( result ) + "]" );
}
}
mAvailableTransfers.add( transfer );
}
/**
* Prepares (allocates) a set of transfer buffers for use in
@@ -1553,30 +1555,28 @@ public abstract class RTL2832TunerController extends TunerController
*/
private void prepareTransfers() throws LibUsbException
{
mTransfers = new CopyOnWriteArrayList<Transfer>();
for( int x = 0; x < TRANSFER_BUFFER_POOL_SIZE; x++ )
if( mAvailableTransfers == null )
{
Transfer transfer = LibUsb.allocTransfer();
mAvailableTransfers = new LinkedTransferQueue<>();
for( int x = 0; x < TRANSFER_BUFFER_POOL_SIZE; x++ )
{
Transfer transfer = LibUsb.allocTransfer();
if( transfer == null )
{
throw new LibUsbException( "couldn't allocate transfer",
LibUsb.ERROR_NO_MEM );
}
final ByteBuffer buffer =
ByteBuffer.allocateDirect( mBufferSize );
LibUsb.fillBulkTransfer( transfer,
mDeviceHandle,
BULK_ENDPOINT_IN,
buffer,
BufferProcessor.this,
"Buffer #" + x,
TIMEOUT_US );
mTransfers.add( transfer );
if( transfer == null )
{
throw new LibUsbException( "couldn't allocate transfer",
LibUsb.ERROR_NO_MEM );
}
final ByteBuffer buffer =
ByteBuffer.allocateDirect( mBufferSize );
LibUsb.fillBulkTransfer( transfer, mDeviceHandle, USB_BULK_ENDPOINT,
buffer, BufferProcessor.this, "Buffer", TIMEOUT_US );
mAvailableTransfers.add( transfer );
}
}
}
}