Maarten Lankhorst : quartz: Add quality control to avi decoder.

[Alexandre Julliard]

Module: wine
Branch: master
Commit: f38688b836497c3eca7fbdebe30d69261b19dfba
URL:    http://source.winehq.org/git/wine.git/?a=commit;h=f38688b836497c3eca7fbdebe3...

Author: Maarten Lankhorst 
Date:   Tue Nov  9 23:42:42 2010 +0100

quartz: Add quality control to avi decoder.

---

dlls/quartz/avidec.c |   50 ++++++++++++++++++++++++++++++++++++++++++++++++--
 1 files changed, 48 insertions(+), 2 deletions(-)

diff --git a/dlls/quartz/avidec.c b/dlls/quartz/avidec.c
index 39fa861..02f7674 100644
--- a/dlls/quartz/avidec.c
+++ b/dlls/quartz/avidec.c
@@ -48,6 +48,7 @@ typedef struct AVIDecImpl
     HIC hvid;
     BITMAPINFOHEADER* pBihIn;
     BITMAPINFOHEADER* pBihOut;
+    REFERENCE_TIME late;
 } AVIDecImpl;

static const IBaseFilterVtbl AVIDec_Vtbl;
@@ -58,6 +59,7 @@ static HRESULT WINAPI AVIDec_StartStreaming(TransformFilter* pTransformFilter)
     DWORD result;

TRACE("(%p)->()\n", This);
+    This->late = -1;

result = ICDecompressBegin(This->hvid, This->pBihIn, This->pBihOut);
     if (result != ICERR_OK)
@@ -68,6 +70,36 @@ static HRESULT WINAPI AVIDec_StartStreaming(TransformFilter* pTransformFilter)
     return S_OK;
 }

+static HRESULT WINAPI AVIDec_EndFlush(TransformFilter *pTransformFilter) {
+    AVIDecImpl* This = (AVIDecImpl*)pTransformFilter;
+    This->late = -1;
+    return S_OK;
+}
+
+static HRESULT WINAPI AVIDec_NotifyDrop(TransformFilter *pTransformFilter, IBaseFilter *sender, Quality qm) {
+    AVIDecImpl *This = (AVIDecImpl*)pTransformFilter;
+
+    EnterCriticalSection(&This->tf.filter.csFilter);
+    if (qm.Late > 0)
+        This->late = qm.Late + qm.TimeStamp;
+    else
+        This->late = -1;
+    LeaveCriticalSection(&This->tf.filter.csFilter);
+    return S_OK;
+}
+
+static int AVIDec_DropSample(AVIDecImpl *This, REFERENCE_TIME tStart) {
+    if (This->late < 0)
+        return 0;
+
+    if (tStart < This->late) {
+        TRACE("Dropping sample\n");
+        return 1;
+    }
+    This->late = -1;
+    return 0;
+}
+
 static HRESULT WINAPI AVIDec_Receive(TransformFilter *tf, IMediaSample *pSample)
 {
     AVIDecImpl* This = (AVIDecImpl *)tf;
@@ -80,6 +112,7 @@ static HRESULT WINAPI AVIDec_Receive(TransformFilter *tf, IMediaSample *pSample)
     DWORD cbSrcStream;
     LPBYTE pbSrcStream;
     LONGLONG tStart, tStop;
+    DWORD flags = 0;

EnterCriticalSection(&This->tf.filter.csFilter);
     hr = IMediaSample_GetPointer(pSample, &pbSrcStream);
@@ -123,10 +156,22 @@ static HRESULT WINAPI AVIDec_Receive(TransformFilter *tf, IMediaSample *pSample)
         goto error;
     }

-    res = ICDecompress(This->hvid, 0, This->pBihIn, pbSrcStream, This->pBihOut, pbDstStream);
+    if (IMediaSample_IsPreroll(pSample) == S_OK)
+        flags |= ICDECOMPRESS_PREROLL;
+    if (IMediaSample_IsSyncPoint(pSample) != S_OK)
+        flags |= ICDECOMPRESS_NOTKEYFRAME;
+    if (IMediaSample_GetTime(pSample, &tStart, NULL) == S_OK &&
+        AVIDec_DropSample(This, tStart))
+        flags |= ICDECOMPRESS_HURRYUP;
+
+    res = ICDecompress(This->hvid, flags, This->pBihIn, pbSrcStream, This->pBihOut, pbDstStream);
     if (res != ICERR_OK)
         ERR("Error occurred during the decompression (%x)\n", res);

+    /* Drop sample if its intended to be dropped */
+    if (flags & ICDECOMPRESS_HURRYUP)
+        goto error;
+
     IMediaSample_SetActualDataLength(pOutSample, This->pBihOut->biSizeImage);

IMediaSample_SetPreroll(pOutSample, (IMediaSample_IsPreroll(pSample) == S_OK));
@@ -338,8 +383,9 @@ static const TransformFilterFuncTable AVIDec_FuncsTable = {
     AVIDec_BreakConnect,
     NULL,
     NULL,
+    AVIDec_EndFlush,
     NULL,
-    NULL
+    AVIDec_NotifyDrop
 };

HRESULT AVIDec_create(IUnknown * pUnkOuter, LPVOID * ppv)