From 575409a14e62f73e83309daf8ff6642a235f250c Mon Sep 17 00:00:00 2001
From: Fabrice Fontaine <fontaine.fabrice@gmail.com>
Date: Fri, 16 Oct 2020 23:06:36 +0200
Subject: [PATCH] src/mod/applications/mod_cv/mod_cv.cpp: fix build with opencv
 3.4.9
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Use cvScalar instead of CV_RGB to avoid the following build failure with
opencv 3.4.9:

mod_cv.cpp:693:24: error: conversion from ‘cv::Scalar {aka cv::Scalar_<double>}’ to non-scalar type ‘CvScalar’ requested
         CvScalar col = CV_RGB((float)255 * object_neighbors / max_neighbors, 0, 0);
                        ^

Indeed, CV_RGB is defined as cv::Scalar instead of cvScalar since
version 3.4.2 and
https://github.com/opencv/opencv/commit/7f9253ea0a9fe2635926379420002dbf0c3fce0f

It should be noted that CV_RGB(r,g,b) = cvScalar(b,g,r,0)

Signed-off-by: Fabrice Fontaine <fontaine.fabrice@gmail.com>
[Upstream status: https://github.com/signalwire/freeswitch/pull/914]
---
 src/mod/applications/mod_cv/mod_cv.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/mod/applications/mod_cv/mod_cv.cpp b/src/mod/applications/mod_cv/mod_cv.cpp
index 582f925abf..bbec755e91 100644
--- a/src/mod/applications/mod_cv/mod_cv.cpp
+++ b/src/mod/applications/mod_cv/mod_cv.cpp
@@ -690,7 +690,7 @@ void detectAndDraw(cv_context_t *context)
 		//printf("WTF %d\n", object_neighbors);
         //cout << "Detected " << object_neighbors << " object neighbors" << endl;
         const int rect_height = cvRound((float)img.rows * object_neighbors / max_neighbors);
-        CvScalar col = CV_RGB((float)255 * object_neighbors / max_neighbors, 0, 0);
+        CvScalar col = cvScalar(0, 0, (float)255 * object_neighbors / max_neighbors, 0);
         rectangle(img, cvPoint(0, img.rows), cvPoint(img.cols/10, img.rows - rect_height), col, -1);
 
         parse_stats(&context->nestDetected, nestedObjects.size(), context->skip);
-- 
2.28.0