pleorasrc: add support for IYU1 and IYU2 pixel formats

This also needed a change to calculating the strides, as IYU1 is 12bpp,
and GstVideoInfo defines pixel stride in bytes, so for IYU2 the stride
was calculated as zero. Instead use Pleora's own definition of pixel
stride to calculate Pleora's row stride.

sys/pleora/gstpleorasrc.cpp

@@ -748,6 +748,18 @@ GstPleoraCapsInfos gst_caps_infos[] = {
         "video/x-raw", "UYVY",
         0, 0, MAKE_FOURCC ('U', 'Y', 'V', 'Y')
       },
+  {
+        PvPixelYUV411_8_UYYVYY,
+        "video/x-raw, format=(string)IYU1",
+        "video/x-raw", "IYU1",
+        0, 0, MAKE_FOURCC ('I', 'Y', 'U', '1')
+      },
+  {
+        PvPixelYUV8_UYV,
+        "video/x-raw, format=(string)IYU2",
+        "video/x-raw", "IYU2",
+        0, 0, MAKE_FOURCC ('I', 'Y', 'U', '2')
+      },
   {
         PvPixelYUV422_8,
         "video/x-raw, format=(string)YUY2",
@@ -972,8 +984,6 @@ gst_pleorasrc_set_caps (GstBaseSrc * bsrc, GstCaps * caps)
   if (GST_VIDEO_INFO_FORMAT (&vinfo) != GST_VIDEO_FORMAT_UNKNOWN) {
     src->height = GST_VIDEO_INFO_HEIGHT (&vinfo);
     src->gst_stride = GST_VIDEO_INFO_COMP_STRIDE (&vinfo, 0);
-    src->pleora_stride =
-        GST_VIDEO_INFO_WIDTH (&vinfo) * GST_VIDEO_INFO_COMP_PSTRIDE (&vinfo, 0);
   } else {
     goto unsupported_caps;
   }
@@ -1125,6 +1135,9 @@ gst_pleorasrc_create (GstPushSrc * psrc, GstBuffer ** buf)
     }
     src->caps = caps;
     gst_base_src_set_caps (GST_BASE_SRC (src), src->caps);
+
+    guint32 pixel_bpp = PvGetPixelBitCount (pvimage->GetPixelType ());
+    src->pleora_stride = (pvimage->GetWidth () * pixel_bpp) / 8;
   } else {
     GST_ELEMENT_ERROR (src, RESOURCE, FAILED, ("Pixel type not supported"),
         (NULL));