From 838947bb8ea4dbc4d8490541513453355dd6d2fc Mon Sep 17 00:00:00 2001
From: Pavel Rojtberg <rojtberg@gmail.com>
Date: Sat, 10 Oct 2015 13:42:26 +0200
Subject: [PATCH] replace custom yuyv_to_rgb24 implementation by cvtColor

---
 modules/videoio/src/cap_v4l.cpp | 47 +++------------------------------
 modules/videoio/src/precomp.hpp |  1 +
 2 files changed, 5 insertions(+), 43 deletions(-)

diff --git a/modules/videoio/src/cap_v4l.cpp b/modules/videoio/src/cap_v4l.cpp
index 5ec5278f0..4f00e43d5 100644
--- a/modules/videoio/src/cap_v4l.cpp
+++ b/modules/videoio/src/cap_v4l.cpp
@@ -1516,49 +1516,10 @@ yuv411p_to_rgb24(int width, int height,
 
 #ifdef HAVE_CAMV4L2
 static void
-yuyv_to_rgb24 (int width, int height, unsigned char *src, unsigned char *dst)
-{
-   unsigned char *s;
-   unsigned char *d;
-   int l, c;
-   int r, g, b, cr, cg, cb, y1, y2;
-
-   l = height;
-   s = src;
-   d = dst;
-   while (l--) {
-      c = width >> 1;
-      while (c--) {
-         y1 = *s++;
-         cb = ((*s - 128) * 454) >> 8;
-         cg = (*s++ - 128) * 88;
-         y2 = *s++;
-         cr = ((*s - 128) * 359) >> 8;
-         cg = (cg + (*s++ - 128) * 183) >> 8;
-
-         r = y1 + cr;
-         b = y1 + cb;
-         g = y1 - cg;
-         SAT(r);
-         SAT(g);
-         SAT(b);
-
-     *d++ = b;
-     *d++ = g;
-     *d++ = r;
-
-         r = y2 + cr;
-         b = y2 + cb;
-         g = y2 - cg;
-         SAT(r);
-         SAT(g);
-         SAT(b);
-
-     *d++ = b;
-     *d++ = g;
-     *d++ = r;
-      }
-   }
+yuyv_to_rgb24(int width, int height, unsigned char* src, unsigned char* dst) {
+    using namespace cv;
+    cvtColor(Mat(height, width, CV_8UC2, src), Mat(height, width, CV_8UC3, dst),
+             COLOR_YUV2BGR_YUYV);
 }
 
 static void
diff --git a/modules/videoio/src/precomp.hpp b/modules/videoio/src/precomp.hpp
index d60b00f94..442eaa19a 100644
--- a/modules/videoio/src/precomp.hpp
+++ b/modules/videoio/src/precomp.hpp
@@ -49,6 +49,7 @@
 
 #include "opencv2/imgcodecs.hpp"
 
+#include "opencv2/imgproc.hpp"
 #include "opencv2/imgproc/imgproc_c.h"
 #include "opencv2/imgcodecs/imgcodecs_c.h"
 #include "opencv2/videoio/videoio_c.h"