media-libs/opencv: revert drop old 3.1.0-r1 and patches

This reverts commit 48656e3b700cf6d771db428bc6dde322753839d3.

4 files changed, 632 insertions, 0 deletions

diff --git a/media-libs/opencv/files/opencv-3.1.0-fix-hal-headers.patch b/media-libs/opencv/files/opencv-3.1.0-fix-hal-headers.patch
new file mode 100644
index 000000000000..dd77571a60cf
--- /dev/null
+++ b/media-libs/opencv/files/opencv-3.1.0-fix-hal-headers.patch
@@ -0,0 +1,91 @@
+From f529a1df2b17bcada1179ddcaf1352e3a5ba97b8 Mon Sep 17 00:00:00 2001
+From: Maksim Shabunin <maksim.shabunin@itseez.com>
+Date: Tue, 15 Dec 2015 17:51:08 +0300
+Subject: [PATCH] Fixed HAL headers location
+
+diff --git opencv_contrib-master/modules/xfeatures2d/src/sift.cpp opencv_contrib-master/modules/xfeatures2d/src/sift.cpp
+index fc67c4d..9634fbb 100644
+--- opencv_contrib-master/modules/xfeatures2d/src/sift.cpp
++++ opencv_contrib-master/modules/xfeatures2d/src/sift.cpp
+@@ -105,6 +105,7 @@
+ #include "precomp.hpp"
+ #include <iostream>
+ #include <stdarg.h>
++#include <opencv2/core/hal/hal.hpp>
+ 
+ namespace cv
+ {
+@@ -337,9 +338,9 @@ static float calcOrientationHist( const Mat& img, Point pt, int radius,
+     len = k;
+ 
+     // compute gradient values, orientations and the weights over the pixel neighborhood
+-    hal::exp(W, W, len);
+-    hal::fastAtan2(Y, X, Ori, len, true);
+-    hal::magnitude(X, Y, Mag, len);
++    cv::hal::exp32f(W, W, len);
++    cv::hal::fastAtan2(Y, X, Ori, len, true);
++    cv::hal::magnitude32f(X, Y, Mag, len);
+ 
+     for( k = 0; k < len; k++ )
+     {
+@@ -620,9 +621,9 @@ static void calcSIFTDescriptor( const Mat& img, Point2f ptf, float ori, float sc
+         }
+ 
+     len = k;
+-    hal::fastAtan2(Y, X, Ori, len, true);
+-    hal::magnitude(X, Y, Mag, len);
+-    hal::exp(W, W, len);
++    cv::hal::fastAtan2(Y, X, Ori, len, true);
++    cv::hal::magnitude32f(X, Y, Mag, len);
++    cv::hal::exp32f(W, W, len);
+ 
+     for( k = 0; k < len; k++ )
+     {
+
+diff --git opencv_contrib-master/modules/optflow/src/motempl.cpp opencv_contrib-master/modules/optflow/src/motempl.cpp
+index ec18013..452ad63 100644
+--- opencv_contrib-master/modules/optflow/src/motempl.cpp
++++ opencv_contrib-master/modules/optflow/src/motempl.cpp
+@@ -41,6 +41,7 @@
+ 
+ #include "precomp.hpp"
+ #include "opencv2/core/utility.hpp"
++#include "opencv2/core/hal/hal.hpp"
+ #include "opencl_kernels_optflow.hpp"
+ 
+ namespace  cv {
+@@ -212,7 +213,7 @@ void calcMotionGradient( InputArray _mhi, OutputArray _mask,
+         float* orient_row = orient.ptr<float>(y);
+         uchar* mask_row = mask.ptr<uchar>(y);
+ 
+-        hal::fastAtan2(dY_max_row, dX_min_row, orient_row, size.width, true);
++        cv::hal::fastAtan2(dY_max_row, dX_min_row, orient_row, size.width, true);
+ 
+         // make orientation zero where the gradient is very small
+         for( x = 0; x < size.width; x++ )
+diff --git opencv_contrib-master/modules/ximgproc/src/fgs_filter.cpp opencv_contrib-master/modules/ximgproc/src/fgs_filter.cpp
+index e89eb8f..39307e5 100644
+--- opencv_contrib-master/modules/ximgproc/src/fgs_filter.cpp
++++ opencv_contrib-master/modules/ximgproc/src/fgs_filter.cpp
+@@ -35,7 +35,7 @@
+  */
+ 
+ #include "precomp.hpp"
+-#include "opencv2/hal/intrin.hpp"
++#include "opencv2/core/hal/intrin.hpp"
+ #include <vector>
+ 
+ namespace cv {
+diff --git opencv_contrib-master/modules/xphoto/src/grayworld_white_balance.cpp opencv_contrib-master/modules/xphoto/src/grayworld_white_balance.cpp
+index 4780497..15530d3 100644
+--- opencv_contrib-master/modules/xphoto/src/grayworld_white_balance.cpp
++++ opencv_contrib-master/modules/xphoto/src/grayworld_white_balance.cpp
+@@ -40,7 +40,7 @@
+ #include "opencv2/xphoto.hpp"
+ 
+ #include "opencv2/core.hpp"
+-#include "opencv2/hal/intrin.hpp"
++#include "opencv2/core/hal/intrin.hpp"
+ 
+ namespace cv { namespace xphoto {
+ 
diff --git a/media-libs/opencv/files/opencv-3.1.0-fix-ocl-declaration.patch b/media-libs/opencv/files/opencv-3.1.0-fix-ocl-declaration.patch
new file mode 100644
index 000000000000..e9a190c66324
--- /dev/null
+++ b/media-libs/opencv/files/opencv-3.1.0-fix-ocl-declaration.patch
@@ -0,0 +1,214 @@
+From ac8dd366e4a1877e0af16961a4094496bed955f7 Mon Sep 17 00:00:00 2001
+From: Alexander Alekhin <alexander.alekhin@itseez.com>
+Date: Sun, 13 Sep 2015 21:18:47 +0300
+Subject: [PATCH] ocl: fix "off" mode
+
+diff --git opencv_contrib-master/modules/tracking/src/tldDetector.cpp opencv_contrib-master/modules/tracking/src/tldDetector.cpp
+index cbb783e..d61444b 100644
+--- opencv_contrib-master/modules/tracking/src/tldDetector.cpp
++++ opencv_contrib-master/modules/tracking/src/tldDetector.cpp
+@@ -104,6 +104,7 @@ namespace cv
+ 			return splus / (sminus + splus);
+ 		}
+ 
++#ifdef HAVE_OPENCL
+ 		double TLDDetector::ocl_Sr(const Mat_<uchar>& patch)
+ 		{
+ 			//int64 e1, e2, e3, e4;
+@@ -283,6 +284,7 @@ namespace cv
+ 			//t = (e2 - e1) / getTickFrequency()*1000.0;
+ 			//printf("Sr GPU: %f\n\n", t);
+ 		}
++#endif
+ 
+ 		// Calculate Conservative similarity of the patch (NN-Model)
+ 		double TLDDetector::Sc(const Mat_<uchar>& patch)
+@@ -337,6 +339,7 @@ namespace cv
+ 			return splus / (sminus + splus);
+ 		}
+ 
++#ifdef HAVE_OPENCL
+ 		double TLDDetector::ocl_Sc(const Mat_<uchar>& patch)
+ 		{
+ 			//int64 e1, e2, e3, e4;
+@@ -415,6 +418,7 @@ namespace cv
+ 				return 0.0;
+ 			return splus / (sminus + splus);
+ 		}
++#endif // HAVE_OPENCL
+ 
+ 		// Generate Search Windows for detector from aspect ratio of initial BBs
+ 		void TLDDetector::generateScanGrid(int rows, int cols, Size initBox, std::vector<Rect2d>& res, bool withScaling)
+@@ -565,6 +569,7 @@ namespace cv
+ 			return true;
+ 		}
+ 
++#ifdef HAVE_OPENCL
+ 		bool TLDDetector::ocl_detect(const Mat& img, const Mat& imgBlurred, Rect2d& res, std::vector<LabeledPatch>& patches, Size initSize)
+ 		{
+ 			patches.clear();
+@@ -696,6 +701,7 @@ namespace cv
+ 			res = maxScRect;
+ 			return true;
+ 		}
++#endif // HAVE_OPENCL
+ 
+ 		// Computes the variance of subimage given by box, with the help of two integral
+ 		// images intImgP and intImgP2 (sum of squares), which should be also provided.
+diff --git opencv_contrib-master/modules/tracking/src/tldDetector.hpp opencv_contrib-master/modules/tracking/src/tldDetector.hpp
+index 3e11895..1caff57 100644
+--- opencv_contrib-master/modules/tracking/src/tldDetector.hpp
++++ opencv_contrib-master/modules/tracking/src/tldDetector.hpp
+@@ -74,10 +74,12 @@ namespace cv
+ 			inline double ensembleClassifierNum(const uchar* data);
+ 			inline void prepareClassifiers(int rowstep);
+ 			double Sr(const Mat_<uchar>& patch);
+-			double ocl_Sr(const Mat_<uchar>& patch);
+ 			double Sc(const Mat_<uchar>& patch);
++#ifdef HAVE_OPENCL
++			double ocl_Sr(const Mat_<uchar>& patch);
+ 			double ocl_Sc(const Mat_<uchar>& patch);
+ 			void ocl_batchSrSc(const Mat_<uchar>& patches, double *resultSr, double *resultSc, int numOfPatches);
++#endif
+ 
+ 			std::vector<TLDEnsembleClassifier> classifiers;
+ 			Mat *posExp, *negExp;
+diff --git opencv_contrib-master/modules/tracking/src/tldModel.cpp opencv_contrib-master/modules/tracking/src/tldModel.cpp
+index 0854022..47fc32a 100644
+--- opencv_contrib-master/modules/tracking/src/tldModel.cpp
++++ opencv_contrib-master/modules/tracking/src/tldModel.cpp
+@@ -246,6 +246,7 @@ namespace cv
+ 			dfprintf((stdout, "\n"));*/
+ 		}
+ 
++#ifdef HAVE_OPENCL
+ 		void TrackerTLDModel::ocl_integrateAdditional(const std::vector<Mat_<uchar> >& eForModel, const std::vector<Mat_<uchar> >& eForEnsemble, bool isPositive)
+ 		{
+ 			int positiveIntoModel = 0, negativeIntoModel = 0, positiveIntoEnsemble = 0, negativeIntoEnsemble = 0;
+@@ -315,6 +316,7 @@ namespace cv
+ 			dfprintf((stdout, "positiveIntoEnsemble = %d ", positiveIntoEnsemble));
+ 			dfprintf((stdout, "\n"));*/
+ 		}
++#endif // HAVE_OPENCL
+ 
+ 		//Push the patch to the model
+ 		void TrackerTLDModel::pushIntoModel(const Mat_<uchar>& example, bool positive)
+diff --git opencv_contrib-master/modules/tracking/src/tldModel.hpp opencv_contrib-master/modules/tracking/src/tldModel.hpp
+index be9141a..ba7c926 100644
+--- opencv_contrib-master/modules/tracking/src/tldModel.hpp
++++ opencv_contrib-master/modules/tracking/src/tldModel.hpp
+@@ -58,7 +58,9 @@ namespace cv
+ 			void setBoudingBox(Rect2d boundingBox){ boundingBox_ = boundingBox; }
+ 			void integrateRelabeled(Mat& img, Mat& imgBlurred, const std::vector<TLDDetector::LabeledPatch>& patches);
+ 			void integrateAdditional(const std::vector<Mat_<uchar> >& eForModel, const std::vector<Mat_<uchar> >& eForEnsemble, bool isPositive);
++#ifdef HAVE_OPENCL
+ 			void ocl_integrateAdditional(const std::vector<Mat_<uchar> >& eForModel, const std::vector<Mat_<uchar> >& eForEnsemble, bool isPositive);
++#endif
+ 			Size getMinSize(){ return minSize_; }
+ 			void printme(FILE* port = stdout);
+ 			Ptr<TLDDetector> detector;
+diff --git opencv_contrib-master/modules/tracking/src/tldTracker.cpp opencv_contrib-master/modules/tracking/src/tldTracker.cpp
+index 0f1e2f7..a5190f5 100644
+--- opencv_contrib-master/modules/tracking/src/tldTracker.cpp
++++ opencv_contrib-master/modules/tracking/src/tldTracker.cpp
+@@ -123,9 +123,11 @@ bool TrackerTLDImpl::updateImpl(const Mat& image, Rect2d& boundingBox)
+ 
+ 		if (i == 1)
+ 		{
++#ifdef HAVE_OPENCL
+ 			if (ocl::haveOpenCL())
+ 				DETECT_FLG = tldModel->detector->ocl_detect(imageForDetector, image_blurred, tmpCandid, detectorResults, tldModel->getMinSize());
+ 			else
++#endif
+ 				DETECT_FLG = tldModel->detector->detect(imageForDetector, image_blurred, tmpCandid, detectorResults, tldModel->getMinSize());
+ 		}
+ 
+@@ -211,17 +213,21 @@ bool TrackerTLDImpl::updateImpl(const Mat& image, Rect2d& boundingBox)
+         tldModel->integrateRelabeled(imageForDetector, image_blurred, detectorResults);
+         //dprintf(("%d relabeled by nExpert\n", negRelabeled));
+         pExpert.additionalExamples(examplesForModel, examplesForEnsemble);
+-		if (ocl::haveOpenCL())
+-			tldModel->ocl_integrateAdditional(examplesForModel, examplesForEnsemble, true);
+-		else
+-			tldModel->integrateAdditional(examplesForModel, examplesForEnsemble, true);
++#ifdef HAVE_OPENCL
++        if (ocl::haveOpenCL())
++            tldModel->ocl_integrateAdditional(examplesForModel, examplesForEnsemble, true);
++        else
++#endif
++        tldModel->integrateAdditional(examplesForModel, examplesForEnsemble, true);
+         examplesForModel.clear(); examplesForEnsemble.clear();
+         nExpert.additionalExamples(examplesForModel, examplesForEnsemble);
+ 
+-		if (ocl::haveOpenCL())
+-			tldModel->ocl_integrateAdditional(examplesForModel, examplesForEnsemble, false);
+-		else
+-			tldModel->integrateAdditional(examplesForModel, examplesForEnsemble, false);
++#ifdef HAVE_OPENCL
++        if (ocl::haveOpenCL())
++            tldModel->ocl_integrateAdditional(examplesForModel, examplesForEnsemble, false);
++        else
++#endif
++            tldModel->integrateAdditional(examplesForModel, examplesForEnsemble, false);
+     }
+     else
+     {
+diff --git opencv_contrib-master/modules/xfeatures2d/src/surf.cpp opencv_contrib-master/modules/xfeatures2d/src/surf.cpp
+index 673817e..af5ceaf6 100644
+--- opencv_contrib-master/modules/xfeatures2d/src/surf.cpp
++++ opencv_contrib-master/modules/xfeatures2d/src/surf.cpp
+@@ -892,6 +892,7 @@ void SURF_Impl::detectAndCompute(InputArray _img, InputArray _mask,
+     CV_Assert(!_img.empty() && CV_MAT_DEPTH(imgtype) == CV_8U && (imgcn == 1 || imgcn == 3 || imgcn == 4));
+     CV_Assert(_descriptors.needed() || !useProvidedKeypoints);
+ 
++#ifdef HAVE_OPENCL
+     if( ocl::useOpenCL() )
+     {
+         SURF_OCL ocl_surf;
+@@ -918,6 +919,7 @@ void SURF_Impl::detectAndCompute(InputArray _img, InputArray _mask,
+             return;
+         }
+     }
++#endif // HAVE_OPENCL
+ 
+     Mat img = _img.getMat(), mask = _mask.getMat(), mask1, sum, msum;
+ 
+diff --git opencv_contrib-master/modules/xfeatures2d/src/surf.hpp opencv_contrib-master/modules/xfeatures2d/src/surf.hpp
+index 2c4e271..cf3fda1 100644
+--- opencv_contrib-master/modules/xfeatures2d/src/surf.hpp
++++ opencv_contrib-master/modules/xfeatures2d/src/surf.hpp
+@@ -64,6 +64,7 @@ class SURF_Impl : public SURF
+     bool upright;
+ };
+ 
++#ifdef HAVE_OPENCL
+ class SURF_OCL
+ {
+ public:
+@@ -145,6 +146,7 @@ class SURF_OCL
+ 
+     int status;
+ };
++#endif // HAVE_OPENCL
+ 
+ /*
+ template<typename _Tp> void copyVectorToUMat(const std::vector<_Tp>& v, UMat& um)
+diff --git opencv_contrib-master/modules/xfeatures2d/src/surf.ocl.cpp opencv_contrib-master/modules/xfeatures2d/src/surf.ocl.cpp
+index b12ebd3..3d9845d 100644
+--- opencv_contrib-master/modules/xfeatures2d/src/surf.ocl.cpp
++++ opencv_contrib-master/modules/xfeatures2d/src/surf.ocl.cpp
+@@ -43,6 +43,9 @@
+ //
+ //M*/
+ #include "precomp.hpp"
++
++#ifdef HAVE_OPENCL
++
+ #include "surf.hpp"
+ 
+ #include <cstdio>
+@@ -461,3 +464,4 @@ bool SURF_OCL::calcOrientation(UMat &keypoints)
+ }
+ }
+ 
++#endif // HAVE_OPENCL
diff --git a/media-libs/opencv/files/opencv-3.1.0-invalid-string-usage.patch b/media-libs/opencv/files/opencv-3.1.0-invalid-string-usage.patch
new file mode 100644
index 000000000000..c9f85a758583
--- /dev/null
+++ b/media-libs/opencv/files/opencv-3.1.0-invalid-string-usage.patch
@@ -0,0 +1,75 @@
+From 9862a8bac536981c1c1a74710741fb40db4beac7 Mon Sep 17 00:00:00 2001
+From: Alexander Alekhin <alexander.alekhin@itseez.com>
+Date: Wed, 23 Sep 2015 12:44:26 +0300
+Subject: [PATCH] fix invalid String usage
+
+---
+ modules/tracking/src/tldDetector.cpp   |  6 +++---
+ modules/ximgproc/samples/live_demo.cpp | 12 ++++++------
+ 2 files changed, 9 insertions(+), 9 deletions(-)
+
+diff --git opencv_contrib-master/modules/tracking/src/tldDetector.cpp opencv_contrib-master/modules/tracking/src/tldDetector.cpp
+index cbb783e..0916092 100644
+--- opencv_contrib-master/modules/tracking/src/tldDetector.cpp
++++ opencv_contrib-master/modules/tracking/src/tldDetector.cpp
+@@ -122,7 +122,7 @@ namespace cv
+ 			ocl::Kernel k;
+ 			ocl::ProgramSource src = ocl::tracking::tldDetector_oclsrc;
+ 			String error;
+-			ocl::Program prog(src, NULL, error);
++			ocl::Program prog(src, String(), error);
+ 			k.create("NCC", prog);
+ 			if (k.empty())
+ 				printf("Kernel create failed!!!\n");
+@@ -198,7 +198,7 @@ namespace cv
+ 			ocl::Kernel k;
+ 			ocl::ProgramSource src = ocl::tracking::tldDetector_oclsrc;
+ 			String error;
+-			ocl::Program prog(src, NULL, error);
++			ocl::Program prog(src, String(), error);
+ 			k.create("batchNCC", prog);
+ 			if (k.empty())
+ 				printf("Kernel create failed!!!\n");
+@@ -355,7 +355,7 @@ namespace cv
+ 			ocl::Kernel k;
+ 			ocl::ProgramSource src = ocl::tracking::tldDetector_oclsrc;
+ 			String error;
+-			ocl::Program prog(src, NULL, error);
++			ocl::Program prog(src, String(), error);
+ 			k.create("NCC", prog);
+ 			if (k.empty())
+ 				printf("Kernel create failed!!!\n");
+diff --git opencv_contrib-master/modules/ximgproc/samples/live_demo.cpp opencv_contrib-master/modules/ximgproc/samples/live_demo.cpp
+index dd5dc1b..8e16de3 100644
+--- opencv_contrib-master/modules/ximgproc/samples/live_demo.cpp
++++ opencv_contrib-master/modules/ximgproc/samples/live_demo.cpp
+@@ -189,7 +189,7 @@ int main()
+     
+     //Thread trackbar
+     cv::setNumThreads(g_numberOfCPUs); //speedup filtering
+-    createTrackbar("Threads", NULL, &g_numberOfCPUs, cv::getNumberOfCPUs(), changeNumberOfCpuCallback);
++    createTrackbar("Threads", String(), &g_numberOfCPUs, cv::getNumberOfCPUs(), changeNumberOfCpuCallback);
+ 
+     //Buttons to choose different modes
+     createButton("Mode Details Enhancement", changeModeCallback, (void*)filterDetailEnhancement, QT_RADIOBOX, true);
+@@ -199,15 +199,15 @@ int main()
+ 
+     //sliders for Details Enhancement mode
+     g_filterOp = filterDetailEnhancement; //set Details Enhancement as default filter
+-    createTrackbar("Detail contrast", NULL, &g_contrastBase, 200);
+-    createTrackbar("Detail level" , NULL, &g_detailsLevel, 200);
++    createTrackbar("Detail contrast", String(), &g_contrastBase, 200);
++    createTrackbar("Detail level" , String(), &g_detailsLevel, 200);
+     
+     //sliders for Stylizing mode
+-    createTrackbar("Style gamma", NULL, &g_edgesGamma, 300);
++    createTrackbar("Style gamma", String(), &g_edgesGamma, 300);
+ 
+     //sliders for every mode
+-    createTrackbar("Sigma Spatial", NULL, &g_sigmaSpatial, 200);
+-    createTrackbar("Sigma Color"  , NULL, &g_sigmaColor, 200);
++    createTrackbar("Sigma Spatial", String(), &g_sigmaSpatial, 200);
++    createTrackbar("Sigma Color"  , String(), &g_sigmaColor, 200);
+ 
+     Mat rawFrame, outputFrame;
+     Mat srcFrame, processedFrame;
diff --git a/media-libs/opencv/opencv-3.1.0-r1.ebuild b/media-libs/opencv/opencv-3.1.0-r1.ebuild
new file mode 100644
index 000000000000..bbbcde9fdec0
--- /dev/null
+++ b/media-libs/opencv/opencv-3.1.0-r1.ebuild
@@ -0,0 +1,252 @@
+# Copyright 1999-2016 Gentoo Foundation
+# Distributed under the terms of the GNU General Public License v2
+# $Id$
+
+EAPI=5
+PYTHON_COMPAT=( python{2_7,3_2,3_3,3_4,3_5} )
+
+inherit toolchain-funcs cmake-utils python-single-r1 java-pkg-opt-2 java-ant-2
+
+DESCRIPTION="A collection of algorithms and sample code for various computer vision problems"
+HOMEPAGE="http://opencv.org"
+
+SRC_URI="
+	mirror://sourceforge/opencvlibrary/opencv-unix/${PV}/${P}.zip
+	https://github.com/Itseez/${PN}/archive/${PV}.zip -> ${P}.zip
+	contrib? ( https://github.com/Itseez/${PN}_contrib/archive/${PV}.zip -> ${PN}_contrib.zip )"
+
+LICENSE="BSD"
+SLOT="0/3.1" # subslot = libopencv* soname version
+KEYWORDS="~amd64 ~arm ~ppc ~ppc64 ~x86 ~amd64-linux"
+IUSE="contrib cuda doc +eigen examples ffmpeg gdal gphoto2 gstreamer gtk ieee1394 ipp jpeg jpeg2k libav opencl openexr opengl openmp pch png +python qt4 qt5 testprograms threads tiff vaapi v4l vtk webp xine"
+REQUIRED_USE="
+	python? ( ${PYTHON_REQUIRED_USE} )
+	?? ( qt4 qt5 )
+"
+
+# The following logic is intrinsic in the build system, but we do not enforce
+# it on the useflags since this just blocks emerging pointlessly:
+#	gtk? ( !qt4 )
+#	opengl? ( || ( gtk qt4 ) )
+#	openmp? ( !threads )
+
+RDEPEND="
+	app-arch/bzip2
+	sys-libs/zlib
+	cuda? ( >=dev-util/nvidia-cuda-toolkit-5.5 )
+	ffmpeg? (
+		libav? ( media-video/libav:0= )
+		!libav? ( media-video/ffmpeg:0= )
+	)
+	gdal? ( sci-libs/gdal )
+	gphoto2? ( media-libs/libgphoto2 )
+	gstreamer? (
+		media-libs/gstreamer:1.0
+		media-libs/gst-plugins-base:1.0
+	)
+	gtk? (
+		dev-libs/glib:2
+		x11-libs/gtk+:2
+		opengl? ( x11-libs/gtkglext )
+	)
+	java? ( >=virtual/jre-1.6:* )
+	jpeg? ( virtual/jpeg:0 )
+	jpeg2k? ( media-libs/jasper )
+	ieee1394? (
+		media-libs/libdc1394
+		sys-libs/libraw1394
+	)
+	ipp? ( sci-libs/ipp )
+	opencl? ( virtual/opencl )
+	openexr? ( media-libs/openexr )
+	opengl? ( virtual/opengl virtual/glu )
+	png? ( media-libs/libpng:0= )
+	python? ( ${PYTHON_DEPS} dev-python/numpy[${PYTHON_USEDEP}] )
+	qt4? (
+		dev-qt/qtgui:4
+		dev-qt/qttest:4
+		opengl? ( dev-qt/qtopengl:4 )
+	)
+	qt5? (
+		dev-qt/qtgui:5
+		dev-qt/qttest:5
+		dev-qt/qtconcurrent:5
+		opengl? ( dev-qt/qtopengl:5 )
+	)
+	threads? ( dev-cpp/tbb )
+	tiff? ( media-libs/tiff:0 )
+	v4l? ( >=media-libs/libv4l-0.8.3 )
+	vtk? ( sci-libs/vtk[rendering] )
+	webp? ( media-libs/libwebp )
+	xine? ( media-libs/xine-lib )
+"
+DEPEND="${RDEPEND}
+	virtual/pkgconfig
+	eigen? ( dev-cpp/eigen:3 )
+	java? ( >=virtual/jdk-1.6 )
+"
+
+pkg_setup() {
+	use python && python-single-r1_pkg_setup
+	java-pkg-opt-2_pkg_setup
+}
+
+src_prepare() {
+
+	epatch "${FILESDIR}/${PN}-3.0.0-gles.patch" \
+        	"${FILESDIR}/${PN}-3.1.0-cmake-no-opengl.patch"
+
+	# remove bundled stuff
+	rm -rf 3rdparty
+	sed -i \
+		-e '/add_subdirectory(.*3rdparty.*)/ d' \
+		CMakeLists.txt cmake/*cmake || die
+
+	if use contrib; then
+
+		cd "${WORKDIR}"
+		epatch "${FILESDIR}/${PN}-3.1.0-fix-hal-headers.patch" \
+	       		"${FILESDIR}/${PN}-3.1.0-fix-ocl-declaration.patch" \
+	       		"${FILESDIR}/${PN}-3.1.0-invalid-string-usage.patch"
+	fi
+
+	java-pkg-opt-2_src_prepare
+}
+
+src_configure() {
+	if use openmp; then
+		tc-has-openmp || die "Please switch to an openmp compatible compiler"
+	fi
+
+	JAVA_ANT_ENCODING="iso-8859-1"
+	# set encoding so even this cmake build will pick it up.
+	export ANT_OPTS+=" -Dfile.encoding=iso-8859-1"
+	java-ant-2_src_configure
+
+	# please dont sort here, order is the same as in CMakeLists.txt
+	local mycmakeargs=(
+	# the optinal dependency libraries
+		$(cmake-utils_use_with ieee1394 1394)
+		-DWITH_AVFOUNDATION=OFF # IOS
+		-DWITH_CARBON=OFF # APPLE
+		$(cmake-utils_use_with eigen)
+		$(cmake-utils_use_with ffmpeg)
+		-DWITH_VFW=OFF     # video windows support
+		$(cmake-utils_use_with gstreamer)
+		-DWITH_GSTREAMER_0_10=OFF
+		$(cmake-utils_use_with gtk)
+		-DWITH_GTK_2_X=OFF
+		$(cmake-utils_use_with ipp)
+		$(cmake-utils_use_with java)
+		$(cmake-utils_use_with jpeg2k JASPER)
+		$(cmake-utils_use_with jpeg)
+		$(cmake-utils_use_with webp)
+		$(cmake-utils_use_with opencl)
+		$(cmake-utils_use_with gphoto2)
+		$(cmake-utils_use_with openexr)
+		$(cmake-utils_use_with opengl)
+		$(cmake-utils_use_with openmp)
+		-DWITH_OPENNI=OFF 	#not packaged
+		-DWITH_OPENNI2=OFF	#not packaged
+		$(cmake-utils_use_with png)
+		$(cmake-utils_use_build python opencv_python)
+		-DWITH_PVAPI=OFF					# not packaged
+		-DWITH_GIGEAPI=OFF
+		-DWITH_QUICKTIME=OFF
+		-DWITH_WIN32UI=OFF
+		$(cmake-utils_use_with threads TBB)
+		-DWITH_CSTRIPES=OFF
+		-DWITH_PTHREADS_PF=ON
+		$(cmake-utils_use_with tiff)
+		-DWITH_UNICAP=OFF					# not packaged
+		$(cmake-utils_use_with v4l V4L)
+		$(cmake-utils_use_with vtk VTK)
+		-DWITH_LIBV4L=ON
+		-DWITH_DSHOW=ON               # direct show supp
+		-DWITH_MSMF=OFF
+		-DWITH_VIDEOINPUT=OFF					# windows only
+		-DWITH_XIMEA=OFF # windows only
+		$(cmake-utils_use_with xine)
+		-DWITH_CLP=OFF
+		$(cmake-utils_use_with opencl)
+		-DWITH_OPENCL_SVM=OFF
+		$(cmake-utils_use_with opencl OPENCLAMDFFT)
+		$(cmake-utils_use_with opencl OPENCLAMDBLAS)
+		-DWITH_DIRECTX=OFF
+		-DWITH_INTELPERC=OFF
+		-DWITH_IPP_A=OFF
+		-DWITH_MATLAB=ON #default
+		$(cmake-utils_use_with vaapi VA)
+		$(cmake-utils_use_with vaapi VA_INTEL)
+		$(cmake-utils_use_with gdal gdal)
+		#
+		# OpenCV build components
+		-DBUILD_SHARED_LIBS=ON
+		-DBUILD_ANDROID_EXAMPLES=OFF
+		$(cmake-utils_use_build doc DOCS)
+		$(cmake-utils_use_build examples)
+		$(cmake-utils_use_build java opencv_java)		#for -java bug #555650
+		-DBUILD_PERF_TESTS=OFF
+		$(cmake-utils_use_build testprograms TESTS)
+	# install examples, tests etc
+		$(cmake-utils_use examples INSTALL_C_EXAMPLES)
+		$(cmake-utils_use testprograms INSTALL_TESTS)
+	# build options
+		$(cmake-utils_use_enable pch PRECOMPILED_HEADERS)
+		-DOPENCV_EXTRA_FLAGS_RELEASE=""				# black magic
+	)
+
+	if use qt4; then
+		mycmakeargs+=( "-DWITH_QT=4" )
+	elif use qt5; then
+		mycmakeargs+=( "-DWITH_QT=5" )
+	else
+		mycmakeargs+=( "-DWITH_QT=OFF" )
+	fi
+
+	if use contrib; then
+		mycmakeargs+=( "-DOPENCV_EXTRA_MODULES_PATH=../opencv_contrib-master/modules" )
+	fi
+
+	if use cuda; then
+		mycmakeargs+=( "-DWITH_CUDA=ON" )
+		mycmakeargs+=( "-DWITH_CUBLAS=ON" )
+		mycmakeargs+=( "-DWITH_CUFFT=ON" )
+		mycmakeargs+=( "-DWITH_NVCUVID=ON" ) #Nvidia video decoding library supp
+	else
+		mycmakeargs+=( "-DWITH_CUDA=OFF" )
+		mycmakeargs+=( "-DWITH_CUBLAS=OFF" )
+		mycmakeargs+=( "-DWITH_CUFFT=OFF" )
+		mycmakeargs+=( "-DWITH_NVCUVID=OFF" )
+	fi
+
+	if use examples && use python; then
+		mycmakeargs+=( "-DINSTALL_PYTHON_EXAMPLES=ON" )
+	else
+		mycmakeargs+=( "-DINSTALL_PYTHON_EXAMPLES=OFF" )
+	fi
+
+	# things we want to be hard off or not yet figured out
+	mycmakeargs+=(
+		"-DOPENCV_BUILD_3RDPARTY_LIBS=OFF"
+		"-DBUILD_LATEX_DOCS=OFF"
+		"-DBUILD_PACKAGE=OFF"
+		"-DENABLE_PROFILING=OFF"
+	)
+
+	# things we want to be hard enabled not worth useflag
+	mycmakeargs+=(
+		"-DCMAKE_SKIP_RPATH=ON"
+		"-DOPENCV_DOC_INSTALL_PATH=${EPREFIX}/usr/share/doc/${PF}"
+	)
+
+	# hardcode cuda paths
+	mycmakeargs+=(
+		"-DCUDA_NPP_LIBRARY_ROOT_DIR=/opt/cuda"
+	)
+
+	# workaround for bug 413429
+	tc-export CC CXX
+
+	cmake-utils_src_configure
+}