74     LONGLONG mtStart = -1, mtStop = -1, mtMed;  in ACMWrapper_Receive()  local
88     if (IMediaSample_GetMediaTime(pSample, &mtStart, &mtStop) != S_OK)  in ACMWrapper_Receive()
89         mtStart = mtStop = -1;  in ACMWrapper_Receive()
104     mtMed = mtStart;  in ACMWrapper_Receive()
204         if (mtStart < 0) {  in ACMWrapper_Receive()
207             IMediaSample_SetMediaTime(pOutSample, &mtStart, &mtStop);  in ACMWrapper_Receive()
208             mtStart = mtMed = mtStop;  in ACMWrapper_Receive()
209         } else if (mtStop >= mtStart) {  in ACMWrapper_Receive()
210             mtMed = mtStop - mtStart;  in ACMWrapper_Receive()
211             mtMed = mtStart + mtMed * ash.cbSrcLengthUsed / cbSrcStream;  in ACMWrapper_Receive()
212             IMediaSample_SetMediaTime(pOutSample, &mtStart, &mtMed);  in ACMWrapper_Receive()
213             mtStart = mtMed;  in ACMWrapper_Receive()