Add plex/tautili panel boilerplate

src/panel/plex.cpp

@@ -0,0 +1,123 @@
+///////////////////////////////////////////////////////////////////////////////
+// Tyler Perkins
+// 23-12-21
+// Plex stats panel (tautilli)
+//
+
+#include "plex.hpp"
+#include "plex_config.hpp"
+
+using namespace dashboard::panel;
+
+///////////////////////////////////////////////////////////////////////////////
+// Constructors ///////////////////////////////////////////////////////////////
+///////////////////////////////////////////////////////////////////////////////
+
+plex::plex(){
+    std::cerr << "PLEX CONSTRUCTOR\n";
+    _time_on_screen = PLEX_DEFAULT_ON_SCREEN_TIME;
+    _update_interval = std::chrono::milliseconds{PLEX_UPDATE_INTERVAL};
+    _texture = nullptr;
+    _title = PLEX_TITLE;
+
+    api_curl = curl_easy_init();
+    curl_easy_setopt(api_curl, CURLOPT_URL, PLEX_URL_SOURCE);
+    curl_easy_setopt(api_curl, CURLOPT_WRITEFUNCTION,
+            dashboard::panel::plex::curl_callback);
+    curl_easy_setopt(api_curl, CURLOPT_WRITEDATA, &json_string);
+}
+
+plex::~plex(){
+    std::cerr << "PLEX DECONSTRUCTOR\n";
+    if(_texture != nullptr){
+        SDL_DestroyTexture(_texture);
+    }
+    if(api_curl != nullptr){
+        curl_easy_cleanup(api_curl);
+    }
+}
+
+///////////////////////////////////////////////////////////////////////////////
+// Draw function //////////////////////////////////////////////////////////////
+///////////////////////////////////////////////////////////////////////////////
+
+void plex::draw(){
+    //create the texture if this is the first time running draw
+    if(_texture == nullptr){
+        initTexture();
+        update();
+        update_texture();
+    }
+
+    //check if its time to update
+    if((std::chrono::high_resolution_clock::now() - _last_update) 
+            > _update_interval){
+        update();
+
+        update_texture();
+    }
+
+    SDL_RenderCopy(board::getRenderer(), _texture, NULL, NULL);
+}
+
+///////////////////////////////////////////////////////////////////////////////
+// Helper functions ///////////////////////////////////////////////////////////
+///////////////////////////////////////////////////////////////////////////////
+
+///////////////////////////////////////
+// Update the information of the obj
+// This DOES NOT update the display
+void plex::update(){
+    std::cerr << "PLEX::UPDATE\n";
+    _last_update = std::chrono::high_resolution_clock::now();
+
+    //fetch updates
+    //CURL object has been setup in the constructor
+    CURLcode res = curl_easy_perform(api_curl);
+
+    //parse the result
+    json_doc.Parse(json_string.c_str());
+
+    //update internal state
+    //const rapidjson::Value& curr_entry = json_doc["value"];
+    
+}
+
+///////////////////////////////////////
+// Update the texture that is being
+// displayed, based on data in the json feed
+void plex::update_texture(){
+    std::cerr << "PLEX::UPDATE_TEXTURE\n";
+    SDL_Rect tgt;
+    
+    SDL_SetRenderTarget(board::getRenderer(), _texture);
+    SDL_RenderClear(board::getRenderer());
+
+
+
+
+    SDL_SetRenderTarget(board::getRenderer(), NULL);
+}
+
+///////////////////////////////////////
+// Lazy load the texture object
+// This is to make sure that all of SDL
+// is init before we attempt to draw anything
+void plex::initTexture(){
+    if(_texture == nullptr){
+        _texture = SDL_CreateTexture(board::getRenderer(),
+                SDL_PIXELFORMAT_RGBA8888, 
+                SDL_TEXTUREACCESS_TARGET, 
+                SCREEN_WIDTH, SCREEN_HEIGHT);
+
+        SDL_SetTextureBlendMode(_texture, SDL_BLENDMODE_BLEND);
+    }
+}
+
+///////////////////////////////////////
+// Curl callback function
+size_t dashboard::panel::plex::curl_callback(void* contents, size_t size, 
+        size_t nmemb, void* userp){
+    ((std::string*)userp)->append((char*)contents, size * nmemb);
+    return size * nmemb;
+}

src/panel/plex.hpp

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+///////////////////////////////////////////////////////////////////////////////
+// Tyler Perkins
+// 23-12-21
+// Plex stats panel (tautilli)
+//
+
+#pragma once
+
+#include "panel.hpp"
+
+#include <SDL.h>
+#include <SDL2/SDL_image.h>
+#include <SDL2/SDL_ttf.h>
+
+#include <curl/curl.h>
+#include "../util/rapidjson/document.h"
+
+#include <iostream>
+#include <string>
+#include <chrono>
+
+namespace dashboard::panel {
+    class plex : public panel {
+    public:
+        plex();
+        ~plex();
+
+        static size_t curl_callback(void*, size_t, size_t, void*);
+
+        void draw();
+    private:
+        void update();
+        void update_texture();
+        void initTexture();
+
+        CURL* api_curl;
+        std::string json_string;
+        rapidjson::Document json_doc;
+
+        std::chrono::time_point<std::chrono::high_resolution_clock> _last_update;
+        std::chrono::milliseconds _update_interval;
+    };
+}
+
+#include "../board.hpp"

src/panel/plex_config.hpp

@@ -0,0 +1,25 @@
+///////////////////////////////////////////////////////////////////////////////
+// Tyler Perkins
+// 23-22-21
+// Plex panel configuration
+//
+
+#pragma once
+
+namespace dashboard::panel {
+    //This will be displayed at the top left on the status bar. Set to a blank
+    //string to not show anything
+    constexpr char PLEX_TITLE[] = "Plex";
+
+    //Tautili endpoint 
+    constexpr char PLEX_URL_SOURCE[] = "http://192.168.1.104:8181/api/v2?apikey=<KEY_GOES_HERE>&cmd=";
+
+    //Default time the slid is shown on screen, in ms
+    //Default 15s
+    constexpr size_t PLEX_DEFAULT_ON_SCREEN_TIME = 15000;
+
+    //How long should we wait between updates? in ms
+    //Default 30s
+    constexpr size_t PLEX_UPDATE_INTERVAL = 30000;
+
+}