libraries/frei0r: Disable opencv support.

Signed-off-by: Matteo Bernardini <ponce@slackbuilds.org>

libraries/frei0r/frei0r.SlackBuild

@@ -41,10 +41,12 @@
 #   *Updated for 1.6.1
 # Jan 1st, 2020
 #   *Updated for 1.7.0
+# Jan 20th, 2020
+#   *Disabled opencv support
 
 PRGNAM=frei0r
 VERSION=${VERSION:-1.7.0}
-BUILD=${BUILD:-1}
+BUILD=${BUILD:-2}
 TAG=${TAG:-_SBo}
 
 if [ -z "$ARCH" ]; then
@@ -89,9 +91,12 @@ find -L . \
  \( -perm 666 -o -perm 664 -o -perm 640 -o -perm 600 -o -perm 444 \
   -o -perm 440 -o -perm 400 \) -exec chmod 644 {} \;
 
-# Apply upstream patches
-for i in $CWD/patches/* ; do patch -p1 < $i ; done
+# Apply upstream patches if present
+if [ -d $CWD/patches ]; then
+  for i in $CWD/patches/* ; do patch -p1 < $i ; done
+fi
 
+# Disable opencv support, not compatible with 4.2.x
 mkdir -p build
 cd build
   cmake \
@@ -99,6 +104,7 @@ cd build
     -DCMAKE_CXX_FLAGS:STRING="$SLKCFLAGS -std=c++11" \
     -DCMAKE_INSTALL_PREFIX=/usr \
     -DCMAKE_INSTALL_LIBDIR=/usr/lib$LIBDIRSUFFIX \
+    -DWITHOUT_OPENCV=1 \
     -DCMAKE_BUILD_TYPE=Release ..
   make
   make install DESTDIR=$PKG

libraries/frei0r/patches/01.b27f03c.patch

@@ -1,27 +0,0 @@
-From b27f03c8d51c34cd5f79e0399bb0024ca94ea813 Mon Sep 17 00:00:00 2001
-From: =?UTF-8?q?IOhannes=20m=20zm=C3=B6lnig?= <zmoelnig@iem.at>
-Date: Tue, 10 Dec 2019 15:01:52 +0100
-Subject: [PATCH] facedetect: include imgproc/imgproc_c.h when using OpenCV-4+
-
-imgproc_c.h defines the constants CV_BGR2GRAY, CV_FILLED & CV_AA.
-
-it also includes "core/core_c.h", which then provides
-  `cvGetTickCount()` and `cvGetTickFrequency()`
----
- src/filter/facedetect/facedetect.cpp | 3 +++
- 1 file changed, 3 insertions(+)
-
-diff --git a/src/filter/facedetect/facedetect.cpp b/src/filter/facedetect/facedetect.cpp
-index 1906962..4e7d476 100644
---- a/src/filter/facedetect/facedetect.cpp
-+++ b/src/filter/facedetect/facedetect.cpp
-@@ -21,6 +21,9 @@
- #include <stdio.h>
- #include <string.h>
- #include <opencv2/opencv.hpp>
-+#if CV_MAJOR_VERSION >= 4
-+# include <opencv2/imgproc/imgproc_c.h>
-+#endif
- #include "frei0r.hpp"
- #include "frei0r_math.h"
- 

libraries/frei0r/patches/02.35ed870.patch

@@ -1,167 +0,0 @@
-From 35ed870a3b4e7977119272d3232aaa947bea22ac Mon Sep 17 00:00:00 2001
-From: kwizart <kwizart@gmail.com>
-Date: Mon, 30 Dec 2019 14:44:51 +0100
-Subject: [PATCH] Update facebl0r to c++ api
-
-Signed-off-by: kwizart <kwizart@gmail.com>
----
- src/filter/facebl0r/facebl0r.cpp | 56 ++++++++++++++++++--------------
- 1 file changed, 32 insertions(+), 24 deletions(-)
-
-diff --git a/src/filter/facebl0r/facebl0r.cpp b/src/filter/facebl0r/facebl0r.cpp
-index 17446cc..ba146d0 100644
---- a/src/filter/facebl0r/facebl0r.cpp
-+++ b/src/filter/facebl0r/facebl0r.cpp
-@@ -18,7 +18,11 @@
- #include <stdlib.h>
- #include <stdio.h>
- #include <string.h>
--#include <opencv2/opencv.hpp>
-+#include <opencv2/core.hpp>
-+#include <opencv2/imgproc/imgproc_c.h>
-+#include <opencv2/imgproc.hpp>
-+#include <opencv2/objdetect.hpp>
-+#include <opencv2/video/tracking.hpp>
- #include "frei0r.hpp"
- #include "frei0r_math.h"
- 
-@@ -30,7 +34,7 @@ typedef struct {
- 
-   CvHistogram* hist; //histogram of hue in original face image
- 
--  CvRect prev_rect;  //location of face in previous frame
-+  cv::Rect prev_rect;  //location of face in previous frame
-   CvBox2D curr_box;  //current face location estimate
- } TrackedObj;
- 
-@@ -53,7 +57,7 @@ class FaceBl0r: public frei0r::filter {
-     void update_hue_image (const IplImage* image, TrackedObj* imgs);
-     
- //trackface
--    CvRect* detect_face (IplImage*, CvHaarClassifierCascade*, CvMemStorage*);
-+    CvRect* detect_face (IplImage*, cv::CascadeClassifier&, CvMemStorage*);
-     
- 
-     TrackedObj* tracked_obj;
-@@ -63,7 +67,7 @@ class FaceBl0r: public frei0r::filter {
- //used by capture_video_frame, so we don't have to keep creating.
-     IplImage* image;
- 
--    CvHaarClassifierCascade* cascade;
-+    cv::CascadeClassifier cascade;
-     CvMemStorage* storage;
- 
-     // plugin parameters
-@@ -96,7 +100,7 @@ FaceBl0r::FaceBl0r(int wdt, int hgt) {
-   tracked_obj = 0;
-   face_found = 0;
-   
--  cascade = 0;
-+  //cascade = 0;
-   storage = 0;
-   
-   classifier = "/usr/share/opencv/haarcascades/haarcascade_frontalface_default.xml";
-@@ -124,7 +128,7 @@ FaceBl0r::~FaceBl0r() {
-     if(tracked_obj)
-         destroy_tracked_object(tracked_obj);
- 
--    if(cascade) cvReleaseHaarClassifierCascade(&cascade);
-+    //if(cascade) cvReleaseHaarClassifierCascade(&cascade);
-     if(storage) cvReleaseMemStorage(&storage);
-     
- }
-@@ -133,7 +137,7 @@ void FaceBl0r::update(double time,
-                       uint32_t* out,
-                           const uint32_t* in) {
- 
--  if (!cascade) {
-+  if (cascade.empty()) {
-       cvSetNumThreads(cvRound(threads * 100));
-       if (classifier.length() > 0) {
- 	if (classifier == old_classifier) {
-@@ -142,8 +146,7 @@ void FaceBl0r::update(double time,
- 	  return;
- 	} else old_classifier = classifier;
- 
--	cascade = (CvHaarClassifierCascade*) cvLoad(classifier.c_str(), 0, 0, 0 );
--	if (!cascade) {
-+	if (!cascade.load(classifier.c_str())) {
- 	  fprintf(stderr, "ERROR in filter facebl0r, classifier cascade not found:\n");
- 	  fprintf(stderr, " %s\n", classifier.c_str());
- 	  memcpy(out, in, size * 4);
-@@ -234,30 +237,33 @@ void FaceBl0r::update(double time,
- 
- /* Given an image and a classider, detect and return region. */
- CvRect* FaceBl0r::detect_face (IplImage* image,
--                               CvHaarClassifierCascade* cascade,
-+                               cv::CascadeClassifier &cascade,
-                                CvMemStorage* storage) {
-     
-   CvRect* rect = 0;
-+  std::vector<cv::Rect> faces;
-+  cv::Mat gray_mat;
-   
--  if (cascade && storage) {
-+  if (!cascade.empty() && storage) {
-      //use an equalized gray image for better recognition
-      IplImage* gray = cvCreateImage(cvSize(image->width, image->height), 8, 1);
-      cvCvtColor(image, gray, CV_BGR2GRAY);
-      cvEqualizeHist(gray, gray);
-      cvClearMemStorage(storage);
-+     gray_mat = cv::cvarrToMat(&gray);
- 
-       //get a sequence of faces in image
-       int min = cvRound(smallest * 1000);
--      CvSeq *faces = cvHaarDetectObjects(gray, cascade, storage,
-+      cascade.detectMultiScale(gray_mat, faces,
-          search_scale * 10.0,
-          cvRound(neighbors * 100),
--         CV_HAAR_FIND_BIGGEST_OBJECT|//since we track only the first, get the biggest
--         CV_HAAR_DO_CANNY_PRUNING,  //skip regions unlikely to contain a face
--         cvSize(min, min));
-+         cv::CASCADE_FIND_BIGGEST_OBJECT|//since we track only the first, get the biggest
-+         cv::CASCADE_DO_CANNY_PRUNING,  //skip regions unlikely to contain a face
-+         cvSize(min,min));
-     
-       //if one or more faces are detected, return the first one
--      if(faces && faces->total)
--        rect = (CvRect*) cvGetSeqElem(faces, 0);
-+      if(faces.size() > 0)
-+        rect = (CvRect*) &faces.front();
- 
-       cvReleaseImage(&gray);
-   }
-@@ -321,7 +327,7 @@ void FaceBl0r::destroy_tracked_object (TrackedObj* obj) {
- 
- /* Given an image and tracked object, return box position. */
- CvBox2D FaceBl0r::camshift_track_face (IplImage* image, TrackedObj* obj) {
--  CvConnectedComp components;
-+  //CvConnectedComp components;
- 
-   //create a new hue image
-   update_hue_image(image, obj);
-@@ -330,16 +336,18 @@ CvBox2D FaceBl0r::camshift_track_face (IplImage* image, TrackedObj* obj) {
-   cvCalcBackProject(&obj->hue, obj->prob, obj->hist);
-   cvAnd(obj->prob, obj->mask, obj->prob, 0);
- 
-+  cv::Mat obj_prob_mat = cv::cvarrToMat(&obj->prob);
-+
-   //use CamShift to find the center of the new face probability
--  cvCamShift(obj->prob, obj->prev_rect,
--             cvTermCriteria(CV_TERMCRIT_EPS | CV_TERMCRIT_ITER, 10, 1),
--             &components, &obj->curr_box);
-+  cv::RotatedRect rot_rect = cv::CamShift(obj_prob_mat, obj->prev_rect,
-+             cvTermCriteria(CV_TERMCRIT_EPS | CV_TERMCRIT_ITER, 10, 1));
-+  //           &components, &obj->curr_box);
- 
-   //update face location and angle
--  obj->prev_rect = components.rect;
--  obj->curr_box.angle = -obj->curr_box.angle;
-+  //obj->prev_rect = components.rect;
-+  //obj->curr_box.angle = -obj->curr_box.angle;
- 
--  return obj->curr_box;
-+  return rot_rect;
- }
- 
- void FaceBl0r::update_hue_image (const IplImage* image, TrackedObj* obj) {