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Updated xfer ready flow for both audio/image.

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soukoku 2014-04-06 16:36:57 -04:00
parent 7e8d8f24b0
commit 45f2302151
1 changed files with 56 additions and 107 deletions
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163
NTwain/TwainSession.cs
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@ -668,57 +668,31 @@ namespace NTwain
/// Performs the TWAIN transfer routine at state 6.
/// </summary>
protected virtual void DoTransferRoutine()
{
DataGroups xferGroup = DataGroups.None;
if (DGControl.XferGroup.Get(ref xferGroup) != ReturnCode.Success)
{
xferGroup = DataGroups.None;
}
// support one or the other or both?
if ((xferGroup & DataGroups.Image) == DataGroups.Image)
{
DoImageXfer();
}
else if ((xferGroup & DataGroups.Audio) == DataGroups.Audio)
{
DoAudioXfer();
}
else
{
// ??? just cancel it
var pending = new TWPendingXfers();
var rc = ReturnCode.Success;
do
{
rc = DGControl.PendingXfers.Reset(pending);
} while (rc == ReturnCode.Success && pending.Count != 0);
State = 5;
DisableSource();
}
}
#region audio xfers
private void DoAudioXfer()
{
var pending = new TWPendingXfers();
var rc = ReturnCode.Success;
do
{
#region build pre xfer info
#region build and raise xfer ready
TWAudioInfo audInfo;
DGAudio.AudioInfo.Get(out audInfo);
if (DGAudio.AudioInfo.Get(out audInfo) != ReturnCode.Success)
{
audInfo = null;
}
TWImageInfo imgInfo;
if (DGImage.ImageInfo.Get(out imgInfo) != ReturnCode.Success)
{
imgInfo = null;
}
// ask consumer for xfer details
var preXferArgs = new TransferReadyEventArgs
{
AudioInfo = audInfo,
PendingImageInfo = imgInfo,
PendingTransferCount = pending.Count,
EndOfJob = pending.EndOfJob == 0
};
@ -727,36 +701,67 @@ namespace NTwain
#endregion
#region actually handle xfer
if (preXferArgs.CancelAll)
{
rc = DGControl.PendingXfers.Reset(pending);
if (rc == ReturnCode.Success)
{
break;
}
}
else if (!preXferArgs.CancelCurrent)
{
var mech = this.GetCurrentCap<XferMech>(CapabilityId.ACapXferMech);
switch (mech)
DataGroups xferGroup = DataGroups.None;
if (DGControl.XferGroup.Get(ref xferGroup) != ReturnCode.Success)
{
case XferMech.Native:
DoAudioNativeXfer();
break;
case XferMech.File:
DoAudioFileXfer();
break;
xferGroup = DataGroups.None;
}
if ((xferGroup & DataGroups.Image) == DataGroups.Image)
{
var mech = this.GetCurrentCap<XferMech>(CapabilityId.ICapXferMech);
switch (mech)
{
case XferMech.Native:
DoImageNativeXfer();
break;
case XferMech.Memory:
DoImageMemoryXfer();
break;
case XferMech.File:
DoImageFileXfer();
break;
case XferMech.MemFile:
DoImageMemoryFileXfer();
break;
}
}
if ((xferGroup & DataGroups.Audio) == DataGroups.Audio)
{
var mech = this.GetCurrentCap<XferMech>(CapabilityId.ACapXferMech);
switch (mech)
{
case XferMech.Native:
DoAudioNativeXfer();
break;
case XferMech.File:
DoAudioFileXfer();
break;
}
}
}
rc = DGControl.PendingXfers.EndXfer(pending);
#endregion
} while (rc == ReturnCode.Success && pending.Count != 0);
State = 5;
DisableSource();
}
#region audio xfers
private void DoAudioNativeXfer()
{
IntPtr dataPtr = IntPtr.Zero;
@ -811,62 +816,6 @@ namespace NTwain
#region image xfers
private void DoImageXfer()
{
var pending = new TWPendingXfers();
var rc = ReturnCode.Success;
do
{
#region build pre xfer info
TWImageInfo imgInfo;
DGImage.ImageInfo.Get(out imgInfo);
// ask consumer for xfer details
var preXferArgs = new TransferReadyEventArgs
{
PendingImageInfo = imgInfo,
PendingTransferCount = pending.Count,
EndOfJob = pending.EndOfJob == 0
};
OnTransferReady(preXferArgs);
#endregion
if (preXferArgs.CancelAll)
{
rc = DGControl.PendingXfers.Reset(pending);
}
else if (!preXferArgs.CancelCurrent)
{
var mech = this.GetCurrentCap<XferMech>(CapabilityId.ICapXferMech);
switch (mech)
{
case XferMech.Native:
DoImageNativeXfer();
break;
case XferMech.Memory:
DoImageMemoryXfer();
break;
case XferMech.File:
DoImageFileXfer();
break;
case XferMech.MemFile:
DoImageMemoryFileXfer();
break;
}
}
rc = DGControl.PendingXfers.EndXfer(pending);
} while (rc == ReturnCode.Success && pending.Count != 0);
State = 5;
DisableSource();
}
private void DoImageNativeXfer()
{
IntPtr dataPtr = IntPtr.Zero;