From 62fab57c3e3e8fb4c6b13a2a9f3e1381a0eb3ee0 Mon Sep 17 00:00:00 2001
From: Vitaly Tuzov <terfendail@mediana.jetos.com>
Date: Fri, 24 Mar 2017 16:08:56 +0300
Subject: [PATCH] Tune OpenVX HAL usability checks to distinguish
 multiplication and color conversion kernels

---
 3rdparty/openvx/hal/openvx_hal.cpp | 20 ++++++++++++++++----
 1 file changed, 16 insertions(+), 4 deletions(-)

diff --git a/3rdparty/openvx/hal/openvx_hal.cpp b/3rdparty/openvx/hal/openvx_hal.cpp
index add86c0bde..14889b4ec8 100644
--- a/3rdparty/openvx/hal/openvx_hal.cpp
+++ b/3rdparty/openvx/hal/openvx_hal.cpp
@@ -84,10 +84,22 @@ inline bool dimTooBig(int size)
 inline bool skipSmallImages(int w, int h, int kernel_id)
 {
 //OpenVX calls have essential overhead so it make sense to skip them for small images
-    if (w*h < 1920 * 1080)
-        return true;
-    else
-        return false;
+    switch (kernel_id)
+    {
+    case VX_KERNEL_MULTIPLY:
+        if (w*h < 640 * 480)
+            return true;
+        break;
+    case VX_KERNEL_COLOR_CONVERT:
+        if (w*h < 2048 * 1536)
+            return true;
+        break;
+    default:
+        if (w*h < 3840 * 2160)
+            return true;
+        break;
+    }
+    return false;
 }
 
 inline void setConstantBorder(ivx::border_t &border, vx_uint8 val)