[janderwald] 72866: - fix bugs in USBAudioSelectAudioStreamingInterface

Author: janderwald
Date: Fri Sep 30 09:57:42 2016
New Revision: 72866

URL: http://svn.reactos.org/svn/reactos?rev=72866&view=rev
Log:
- fix bugs in USBAudioSelectAudioStreamingInterface

Modified:
    trunk/reactos/drivers/usb/usbaudio/pin.c

Modified: trunk/reactos/drivers/usb/usbaudio/pin.c
URL:
http://svn.reactos.org/svn/reactos/trunk/reactos/drivers/usb/usbaudio/pin.c…
==============================================================================
--- trunk/reactos/drivers/usb/usbaudio/pin.c	[iso-8859-1] (original)
+++ trunk/reactos/drivers/usb/usbaudio/pin.c	[iso-8859-1] Fri Sep 30 09:57:42 2016
@@ -209,9 +209,6 @@
      /* now prepare interface urb */
      UsbBuildSelectInterfaceRequest(Urb,
GET_SELECT_INTERFACE_REQUEST_SIZE(InterfaceDescriptor->bNumEndpoints),
DeviceExtension->ConfigurationHandle, InterfaceDescriptor->bInterfaceNumber,
InterfaceDescriptor->bAlternateSetting);
 
-     /* copy interface information */
-     RtlCopyMemory(&Urb->UrbSelectInterface.Interface,
DeviceExtension->InterfaceInfo, DeviceExtension->InterfaceInfo->Length);
-
      /* now select the interface */
      Status = SubmitUrbSync(DeviceExtension->LowerDevice, Urb);
 
@@ -220,8 +217,23 @@
      /* did it succeeed */
      if (NT_SUCCESS(Status))
      {
-         /* update configuration info */
-         ASSERT(Urb->UrbSelectInterface.Interface.Length ==
DeviceExtension->InterfaceInfo->Length);
+         /* free old interface info */
+         if (DeviceExtension->InterfaceInfo)
+         {
+             /* free old info */
+             FreeFunction(DeviceExtension->InterfaceInfo);
+         }
+
+         /* alloc interface info */
+         DeviceExtension->InterfaceInfo =
AllocFunction(Urb->UrbSelectInterface.Interface.Length);
+         if (DeviceExtension->InterfaceInfo == NULL)
+         {
+             /* no memory */
+             FreeFunction(Urb);
+             return STATUS_INSUFFICIENT_RESOURCES;
+         }
+
+         /* copy interface info */
          RtlCopyMemory(DeviceExtension->InterfaceInfo,
&Urb->UrbSelectInterface.Interface, Urb->UrbSelectInterface.Interface.Length);
          PinContext->InterfaceDescriptor = InterfaceDescriptor;
      }
@@ -254,7 +266,7 @@
 
     /* get pin context */
     PinContext = Pin->Context;
-	DbgBreakPoint();
+
     MaximumPacketSize =
GetMaxPacketSizeForInterface(PinContext->DeviceExtension->ConfigurationDescriptor,
PinContext->InterfaceDescriptor, Pin->DataFlow);
 
     /* calculate buffer size 8 irps * 10 iso packets * max packet size */
@@ -286,6 +298,7 @@
         /* add to object bag*/
         KsAddItemToObjectBag(Pin->Bag, Irp, IoFreeIrp);
 
+        /* FIXME select correct pipe handle */
         Status =
UsbAudioAllocCaptureUrbIso(PinContext->DeviceExtension->InterfaceInfo->Pipes[0].PipeHandle,

                                             MaximumPacketSize,
                                             &PinContext->Buffer[MaximumPacketSize
* 10 * Index],