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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. /// Performs the TWAIN transfer routine at state 6.
/// </summary> /// </summary>
protected virtual void DoTransferRoutine() 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 pending = new TWPendingXfers();
var rc = ReturnCode.Success; var rc = ReturnCode.Success;
do do
{ {
#region build pre xfer info #region build and raise xfer ready
TWAudioInfo audInfo; 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 // ask consumer for xfer details
var preXferArgs = new TransferReadyEventArgs var preXferArgs = new TransferReadyEventArgs
{ {
AudioInfo = audInfo, AudioInfo = audInfo,
PendingImageInfo = imgInfo,
PendingTransferCount = pending.Count, PendingTransferCount = pending.Count,
EndOfJob = pending.EndOfJob == 0 EndOfJob = pending.EndOfJob == 0
}; };
@ -727,36 +701,67 @@ namespace NTwain
#endregion #endregion
#region actually handle xfer
if (preXferArgs.CancelAll) if (preXferArgs.CancelAll)
{ {
rc = DGControl.PendingXfers.Reset(pending); rc = DGControl.PendingXfers.Reset(pending);
if (rc == ReturnCode.Success)
{
break;
}
} }
else if (!preXferArgs.CancelCurrent) else if (!preXferArgs.CancelCurrent)
{ {
var mech = this.GetCurrentCap<XferMech>(CapabilityId.ACapXferMech); DataGroups xferGroup = DataGroups.None;
switch (mech)
if (DGControl.XferGroup.Get(ref xferGroup) != ReturnCode.Success)
{ {
case XferMech.Native: xferGroup = DataGroups.None;
DoAudioNativeXfer(); }
break;
case XferMech.File: if ((xferGroup & DataGroups.Image) == DataGroups.Image)
DoAudioFileXfer(); {
break; 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); rc = DGControl.PendingXfers.EndXfer(pending);
#endregion
} while (rc == ReturnCode.Success && pending.Count != 0); } while (rc == ReturnCode.Success && pending.Count != 0);
State = 5; State = 5;
DisableSource(); DisableSource();
} }
#region audio xfers
private void DoAudioNativeXfer() private void DoAudioNativeXfer()
{ {
IntPtr dataPtr = IntPtr.Zero; IntPtr dataPtr = IntPtr.Zero;
@ -811,62 +816,6 @@ namespace NTwain
#region image xfers #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() private void DoImageNativeXfer()
{ {
IntPtr dataPtr = IntPtr.Zero; IntPtr dataPtr = IntPtr.Zero;