[ros-diffs] 27/77: [USBPORT] Add USB2_GetLastIsoTime().

[Vadim Galyant]

https://git.reactos.org/?p=reactos.git;a=commitdiff;h=0216b033ccdd886d10395…

commit 0216b033ccdd886d10395279766a87907e830881
Author:     Vadim Galyant <vgal(a)rambler.ru>
AuthorDate: Wed Nov 29 23:50:26 2017 +0900
Commit:     Amine Khaldi <amine.khaldi(a)reactos.org>
CommitDate: Sun Jan 21 19:35:44 2018 +0100

    [USBPORT] Add USB2_GetLastIsoTime().
---
 drivers/usb/usbport/usb2.c | 27 +++++++++++++++++++++++++++
 1 file changed, 27 insertions(+)

diff --git a/drivers/usb/usbport/usb2.c b/drivers/usb/usbport/usb2.c
index ad8375db20..94c2844bd7 100644
--- a/drivers/usb/usbport/usb2.c
+++ b/drivers/usb/usbport/usb2.c
@@ -132,6 +132,33 @@ USB2_GetOverhead(IN PUSB2_TT_ENDPOINT TtEndpoint)
     return Overhead;
 }
 
+ULONG
+NTAPI
+USB2_GetLastIsoTime(IN PUSB2_TT_ENDPOINT TtEndpoint,
+                    IN ULONG Frame)
+{
+    PUSB2_TT_ENDPOINT nextTtEndpoint;
+    ULONG Result;
+
+    DPRINT("USB2_GetLastIsoTime: TtEndpoint - %p, Frame - %X\n",
+           TtEndpoint,
+           Frame);
+
+    nextTtEndpoint =
TtEndpoint->Tt->FrameBudget[Frame].IsoEndpoint->NextTtEndpoint;
+
+    if (nextTtEndpoint ||
+        (nextTtEndpoint = TtEndpoint->Tt->FrameBudget[Frame].AltEndpoint) != NULL)
+    {
+        Result = nextTtEndpoint->StartTime + nextTtEndpoint->CalcBusTime;
+    }
+    else
+    {
+        Result = USB2_FS_SOF_TIME;
+    }
+
+    return Result;
+}
+
 VOID
 NTAPI
 USB2_InitTtEndpoint(IN PUSB2_TT_ENDPOINT TtEndpoint,