Tony Wasserka : windowscodecs: Support Seek for memory streams in IWICStream.
Alexandre Julliard
julliard at winehq.org
Fri Aug 21 09:32:51 CDT 2009
Module: wine
Branch: master
Commit: 23952023883fe2edd43e4a10d191a6b9058afd91
URL: http://source.winehq.org/git/wine.git/?a=commit;h=23952023883fe2edd43e4a10d191a6b9058afd91
Author: Tony Wasserka <tony.wasserka at freenet.de>
Date: Fri Aug 21 11:11:39 2009 +0200
windowscodecs: Support Seek for memory streams in IWICStream.
---
dlls/windowscodecs/stream.c | 19 +++++++++++++++++--
1 files changed, 17 insertions(+), 2 deletions(-)
diff --git a/dlls/windowscodecs/stream.c b/dlls/windowscodecs/stream.c
index 8617129..ebf64cb 100644
--- a/dlls/windowscodecs/stream.c
+++ b/dlls/windowscodecs/stream.c
@@ -125,8 +125,23 @@ static HRESULT WINAPI StreamOnMemory_Write(IStream *iface,
static HRESULT WINAPI StreamOnMemory_Seek(IStream *iface,
LARGE_INTEGER dlibMove, DWORD dwOrigin, ULARGE_INTEGER *plibNewPosition)
{
- FIXME("(%p): stub\n", iface);
- return E_NOTIMPL;
+ StreamOnMemory *This = (StreamOnMemory*)iface;
+ LARGE_INTEGER NewPosition;
+ TRACE("(%p)\n", This);
+
+ if (dlibMove.QuadPart > 0xFFFFFFFF) return HRESULT_FROM_WIN32(ERROR_ARITHMETIC_OVERFLOW);
+
+ if (dwOrigin == STREAM_SEEK_SET) NewPosition.QuadPart = dlibMove.QuadPart;
+ else if (dwOrigin == STREAM_SEEK_CUR) NewPosition.QuadPart = This->dwCurPos + dlibMove.QuadPart;
+ else if (dwOrigin == STREAM_SEEK_END) NewPosition.QuadPart = This->dwMemsize + dlibMove.QuadPart;
+ else return E_INVALIDARG;
+
+ if (NewPosition.QuadPart > This->dwMemsize) return E_INVALIDARG;
+ if (NewPosition.QuadPart < 0) return E_INVALIDARG;
+ This->dwCurPos = NewPosition.LowPart;
+
+ if(plibNewPosition) plibNewPosition->QuadPart = This->dwCurPos;
+ return S_OK;
}
/* SetSize isn't implemented in the native windowscodecs DLL either */
More information about the wine-cvs
mailing list