ptz: Add libcurl as the dependency and call it

.github/workflows/main.yml

@@ -64,6 +64,7 @@ jobs:
           set -ex
           sudo apt install -y \
             libopenblas-dev libopenblas0 \
+            libcurl4-openssl-dev \
             || true
           export OPENBLAS_HOME=/lib/x86_64-linux-gnu/
           cmake -S . -B build \

CMakeLists.txt

@@ -36,6 +36,7 @@ find_package(libobs REQUIRED)
 find_package(obs-frontend-api REQUIRED)
 include(cmake/ObsPluginHelpers.cmake)
 find_qt(VERSION ${QT_VERSION} COMPONENTS Widgets Core Gui)
+find_package(CURL REQUIRED)
 
 if (WITH_DLIB_SUBMODULE)
 	set(CMAKE_POSITION_INDEPENDENT_CODE True)
@@ -123,6 +124,7 @@ target_link_libraries(${CMAKE_PROJECT_NAME}
 	OBS::libobs
 	OBS::obs-frontend-api
 	dlib
+	CURL::libcurl
 	${plugin_additional_libs}
 )
 
@@ -137,6 +139,7 @@ if(OS_WINDOWS)
 		add_definitions("-D_USE_MATH_DEFINES")
 		add_definitions("-D_CRT_SECURE_NO_WARNINGS") # to avoid a warning for `fopen`
 		add_definitions("-D_DISABLE_CONSTEXPR_MUTEX_CONSTRUCTOR") # TODO: Remove once requiring OBS 30.2 or later.
+		target_compile_definitions(${PROJECT_NAME} PRIVATE NOMINMAX)
 	endif()
 
 	target_link_libraries(${CMAKE_PROJECT_NAME} OBS::w32-pthreads)

ci/plugin.spec

@@ -13,6 +13,7 @@ BuildRequires: obs-studio-devel
 BuildRequires: qt6-qtbase-devel qt6-qtbase-private-devel
 BuildRequires: dlib-devel ffmpeg-free-devel sqlite-devel blas-devel lapack-devel
 BuildRequires: flexiblas-devel
+BuildRequires: libcurl-devel
 # dlib-devel requires /usr/include/ffmpeg so that install ffmpeg-free-devel
 
 %package data

src/ptz-http-backend.cpp

@@ -4,6 +4,7 @@
 #include <obs.hpp>
 #include <util/util.hpp>
 #include <util/platform.h>
+#include <curl/curl.h>
 #include "plugin-macros.generated.h"
 #include "ptz-http-backend.hpp"
 
@@ -185,7 +186,26 @@ void *ptz_http_backend::thread_main(void *data)
 static void call_url(const char *method, const char *url, const char *payload)
 {
 	blog(LOG_INFO, "call_url(method='%s', url='%s', payload='%s')", method, url, payload);
-	// TODO: Implement
+
+	CURL *const c = curl_easy_init();
+	if (!c)
+		return;
+
+	curl_easy_setopt(c, CURLOPT_URL, url);
+
+	// TODO: Implement method, payload, etc.
+
+	char error[CURL_ERROR_SIZE];
+	curl_easy_setopt(c, CURLOPT_ERRORBUFFER, error);
+
+	CURLcode code = curl_easy_perform(c);
+	if (code != CURLE_OK) {
+		blog(LOG_WARNING, "Failed method='%s' url='%s' %s",
+				method, url,
+				strlen(error) ? error : curl_easy_strerror(code));
+	}
+
+	curl_easy_cleanup(c);
 }
 
 static bool send_ptz(obs_data_t *user_data, obs_data_t *camera_settings)