ffmpeg: need call ncvisual_decode() again in loop #1066

src/lib/ffmpeg.cpp

@@ -401,6 +401,7 @@ int ncvisual_decode_loop(ncvisual* ncv){
       // FIXME log error
       return -1;
     }
+    return ncvisual_decode(ncv);
   }
   return r;
 }

src/lib/oiio.cpp

@@ -86,6 +86,7 @@ int ncvisual_decode_loop(ncvisual* ncv){
     if(ncv->details.image->seek_subimage(0, 0, &newspec)){
       return -1;
     }
+    ncv->details.framenum = 0;
   }
   return r;
 }

tests/visual.cpp

@@ -117,7 +117,12 @@ TEST_CASE("Visual") {
       CHECK(1 == ret);
       struct ncplane* ncp = ncvisual_render(nc_, ncv, nullptr);
       CHECK(nullptr != ncp);
+      ncplane_destroy(ncp);
       // FIXME verify that it is first frame, not last?
+      ret = ncvisual_decode_loop(ncv);
+      CHECK(0 == ret);
+      ncp = ncvisual_render(nc_, ncv, nullptr);
+      CHECK(nullptr != ncp);
       ncplane_destroy(ncp);
       ncvisual_destroy(ncv);
     }