fixed

modules/core/perf/perf_dft.cpp

@@ -30,19 +30,20 @@ PERF_TEST_P(Size_MatType_FlagsType, dft, TEST_MATS_DFT)
     TEST_CYCLE() dft(src, dst, flags);
 
     SANITY_CHECK(dst, 1e-5, ERROR_RELATIVE);
+}
 
 ///////////////////////////////////////////////////////dct//////////////////////////////////////////////////////
 
-CV_ENUM(FlagsType, 0, DCT_INVERSE , DCT_ROWS, DCT_INVERSE|DCT_ROWS)
+CV_ENUM(DCT_FlagsType, 0, DCT_INVERSE , DCT_ROWS, DCT_INVERSE|DCT_ROWS)
 
-typedef std::tr1::tuple<Size, MatType, FlagsType> Size_MatType_Flag_t;
+typedef std::tr1::tuple<Size, MatType, DCT_FlagsType> Size_MatType_Flag_t;
 typedef perf::TestBaseWithParam<Size_MatType_Flag_t> Size_MatType_Flag;
 
 PERF_TEST_P(Size_MatType_Flag, dct, testing::Combine(
                                     testing::Values(cv::Size(320, 240),cv::Size(800, 600),
                                                     cv::Size(1024, 768), cv::Size(1280, 1024),
                                                     sz1080p, sz2K),
-                                    testing::Values(CV_32FC1, CV_64FC1), FlagsType::all()))
+                                    testing::Values(CV_32FC1, CV_64FC1), DCT_FlagsType::all()))
 {
     Size sz = get<0>(GetParam());
     int type = get<1>(GetParam());
@@ -56,7 +57,7 @@ PERF_TEST_P(Size_MatType_Flag, dct, testing::Combine(
         .out(dst)
         .time(60);
 
-    TEST_CYCLE() dct(src, dst,flags);
+    TEST_CYCLE() dct(src, dst, flags);
 
     SANITY_CHECK(dst, 1e-5, ERROR_RELATIVE);
 }
\ No newline at end of file

modules/core/src/dxt.cpp

@@ -2960,7 +2960,7 @@ template <typename Dct>
 bool DctIPPLoop(const Mat& src, Mat& dst, const Dct& ippidct, bool inv)
 {
     bool ok;
-    parallel_for_(Range(0, src.rows), DctIPPLoop_Invoker<Dct>(src, dst, ippidct, inv, &ok), src.total()/(double)(1<<16) );
+    parallel_for_(Range(0, src.rows), DctIPPLoop_Invoker<Dct>(src, dst, ippidct, inv, &ok), src.rows/(double)(1<<4) );
     return ok;
 }
 
@@ -2976,11 +2976,8 @@ private:
     ippiDCTFunc func;
 };
 
-static bool ippi_DCT(const Mat& src, Mat& dst, bool inv, bool row)
+static bool ippi_DCT_32f(const Mat& src, Mat& dst, bool inv, bool row)
 {
-    if (src.type() != CV_32F)
-        return false;
-
     ippiDCTFunc ippFunc = inv ? (ippiDCTFunc)ippiDCTInv_32f_C1R : (ippiDCTFunc)ippiDCTFwd_32f_C1R ;
 
     if (row)
@@ -3066,9 +3063,9 @@ void cv::dct( InputArray _src0, OutputArray _dst, int flags )
 
 #if defined (HAVE_IPP) && (IPP_VERSION_MAJOR >= 7) && !defined HAVE_IPP_ICV_ONLY
     bool row = (flags & DCT_ROWS) != 0;
-    if(!row || src.rows>(int)(1<<8))
+    if (src.type() == CV_32F)
     {
-        if(ippi_DCT(src,dst,inv, row))
+        if(ippi_DCT_32f(src,dst,inv, row))
             return;
         setIppErrorStatus();
     }