[Buildroot] [PATCH 1/1] package/freeswitch: add opencv3 optional dependency

[Yann E. MORIN <yann.morin.1998@free.fr>]

Fabrice, All,

On 2020-10-17 15:10 +0200, Fabrice Fontaine spake thusly:
> opencv3 is an optional dependency since version 1.8.1 and
> https://github.com/signalwire/freeswitch/commit/6483ab8b65886465863584e8dcfee57084030b9c
> 
> Signed-off-by: Fabrice Fontaine <fontaine.fabrice@gmail.com>

Applied to master, thanks.

Regards,
Yann E. MORIN.

> ---
>  ...ions-mod_cv-mod_cv.cpp-fix-build-wit.patch | 44 +++++++++++++++++++
>  package/freeswitch/Config.in                  |  3 ++
>  package/freeswitch/freeswitch.mk              |  5 +++
>  3 files changed, 52 insertions(+)
>  create mode 100644 package/freeswitch/0001-src-mod-applications-mod_cv-mod_cv.cpp-fix-build-wit.patch
> 
> diff --git a/package/freeswitch/0001-src-mod-applications-mod_cv-mod_cv.cpp-fix-build-wit.patch b/package/freeswitch/0001-src-mod-applications-mod_cv-mod_cv.cpp-fix-build-wit.patch
> new file mode 100644
> index 0000000000..cd0a3ab4c2
> --- /dev/null
> +++ b/package/freeswitch/0001-src-mod-applications-mod_cv-mod_cv.cpp-fix-build-wit.patch
> @@ -0,0 +1,44 @@
> +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
> +MIME-Version: 1.0
> +Content-Type: text/plain; charset=UTF-8
> +Content-Transfer-Encoding: 8bit
> +
> +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
> +
> diff --git a/package/freeswitch/Config.in b/package/freeswitch/Config.in
> index fc8b4bf7e7..a2bb6f4fb0 100644
> --- a/package/freeswitch/Config.in
> +++ b/package/freeswitch/Config.in
> @@ -14,6 +14,9 @@ config BR2_PACKAGE_FREESWITCH
>  	select BR2_PACKAGE_OPENCV_LIB_HIGHGUI if BR2_PACKAGE_OPENCV
>  	select BR2_PACKAGE_OPENCV_LIB_IMGPROC if BR2_PACKAGE_OPENCV
>  	select BR2_PACKAGE_OPENCV_LIB_OBJDETECT if BR2_PACKAGE_OPENCV
> +	select BR2_PACKAGE_OPENCV3_LIB_HIGHGUI if BR2_PACKAGE_OPENCV3
> +	select BR2_PACKAGE_OPENCV3_LIB_IMGPROC if BR2_PACKAGE_OPENCV3
> +	select BR2_PACKAGE_OPENCV3_LIB_OBJDETECT if BR2_PACKAGE_OPENCV3
>  	select BR2_PACKAGE_OPENSSL
>  	select BR2_PACKAGE_PCRE
>  	select BR2_PACKAGE_SOFIA_SIP
> diff --git a/package/freeswitch/freeswitch.mk b/package/freeswitch/freeswitch.mk
> index fe10bc1fa1..e4438e5f04 100644
> --- a/package/freeswitch/freeswitch.mk
> +++ b/package/freeswitch/freeswitch.mk
> @@ -279,6 +279,11 @@ FREESWITCH_DEPENDENCIES += opencv
>  FREESWITCH_ENABLED_MODULES += applications/mod_cv
>  endif
>  
> +ifeq ($(BR2_PACKAGE_OPENCV3),y)
> +FREESWITCH_DEPENDENCIES += opencv3
> +FREESWITCH_ENABLED_MODULES += applications/mod_cv
> +endif
> +
>  ifeq ($(BR2_PACKAGE_POSTGRESQL),y)
>  FREESWITCH_CONF_ENV += \
>  	ac_cv_path_PG_CONFIG=$(STAGING_DIR)/usr/bin/pg_config
> -- 
> 2.28.0
> 
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