Fix bug #6682 (Can't change resolution for YUY2 camera with DShow)

9 years ago · 3f2ab5d3b5
parent 7fea7e0629
commit 3f2ab5d3b5
1 changed files with 8 additions and 6 deletions
--- a/modules/videoio/src/cap_dshow.cpp
+++ b/modules/videoio/src/cap_dshow.cpp
@ -2447,13 +2447,15 @@ static bool setSizeAndSubtype(videoDevice * VD, int attemptWidth, int attemptHei
    VD->pAmMediaType->subtype     = mediatype;

    //buffer size
-    if (mediatype == MEDIASUBTYPE_RGB24)
-    {
-        VD->pAmMediaType->lSampleSize = attemptWidth*attemptHeight*3;
+    if (mediatype == MEDIASUBTYPE_RGB24){
+        VD->pAmMediaType->lSampleSize = attemptWidth*attemptHeight * 3;
    }
-    else
-    {
-        // For compressed data, the value can be zero.
+    else if ((mediatype == MEDIASUBTYPE_YUY2) || (mediatype == MEDIASUBTYPE_YVYU) ||
+        (mediatype == MEDIASUBTYPE_UYVY)){
+
+        VD->pAmMediaType->lSampleSize = attemptWidth*attemptHeight * 2;
+    }
+    else{
        VD->pAmMediaType->lSampleSize = 0;
    }