From 2fb0d23104a4d6e7607269b51357974eae4a52e6 Mon Sep 17 00:00:00 2001
From: Jin Ma <jinma06njuee@gmail.om>
Date: Sat, 7 Sep 2013 10:40:30 +0800
Subject: [PATCH] Removed unnecessary process for conversion to 4-channel
 format.

---
 modules/ocl/perf/perf_bgfg.cpp | 9 +++------
 1 file changed, 3 insertions(+), 6 deletions(-)

diff --git a/modules/ocl/perf/perf_bgfg.cpp b/modules/ocl/perf/perf_bgfg.cpp
index ec96c9007..ecf112702 100644
--- a/modules/ocl/perf/perf_bgfg.cpp
+++ b/modules/ocl/perf/perf_bgfg.cpp
@@ -63,14 +63,11 @@ using std::tr1::get;
 #endif
 
 #if BUILD_WITH_VIDEO_INPUT_SUPPORT
-static void cvtFrameFmt(vector<Mat>& input, vector<Mat>& output, int output_cn)
+static void cvtFrameFmt(vector<Mat>& input, vector<Mat>& output)
 {
     for(int i = 0; i< (int)(input.size()); i++)
     {
-        if(output_cn == 1)
-            cvtColor(input[i], output[i], COLOR_RGB2GRAY);
-        else
-            cvtColor(input[i], output[i], COLOR_RGB2RGBA);
+        cvtColor(input[i], output[i], COLOR_RGB2GRAY);
     }
 }
 //prepare data for CPU
@@ -87,7 +84,7 @@ static void prepareData(VideoCapture& cap, int cn, vector<Mat>& frame_buffer)
     }
 
     if(cn == 1)
-        cvtFrameFmt(frame_buffer_init, frame_buffer, 1);
+        cvtFrameFmt(frame_buffer_init, frame_buffer);
     else
         frame_buffer = frame_buffer_init;
 }