Amibroker Data Plugin Source Code Top Here

Building a High-Performance AmiBroker Data Plugin: Architecture, Source Code, and Optimization

This guide provides a comprehensive walkthrough of the core concepts, architecture, and essential C++ source code needed to build a high-performance AmiBroker data plugin. Understanding the AmiBroker Data Plugin Architecture

Standardized entry points that Amibroker calls to initialize the plugin, check capabilities, and fetch structure info.

AmiBroker will immediately respond by triggering GetQuotesEx or checking GetRecentInfo to repaint the active charts seamlessly. 5. Memory Management and Best Practices amibroker data plugin source code top

pInfo->ulSize = sizeof(PluginInfo); pInfo->ulVersion = AB_PLUGIN_VERSION; pInfo->ulPluginType = PLUGIN_TYPE_DATA; strcpy(pInfo->szPluginName, "My Top Data Source");

: Called when AmiBroker loads the DLL; used for initial setup or resource allocation. : Called when the DLL is unloaded to clean up resources. 2. Primary Data Handling Function

#include #include #include #include #include #include "AmiBroker.h" // DLL Entry Point BOOL APIENTRY DllMain(HMODULE hModule, DWORD ul_reason_for_call, LPVOID lpReserved) switch (ul_reason_for_call) case DLL_PROCESS_ATTACH: case DLL_THREAD_ATTACH: case DLL_THREAD_DETACH: case DLL_PROCESS_DETACH: break; return TRUE; // Capabilities Definition int CustomDataCapability() // Tells AmiBroker this plugin supports historical EOD and Intraday queries return REQ_EOD // GetPluginInfo implementation extern "C" __declspec(dllexport) int GetPluginInfo(struct PluginInfo *pInfo) if (pInfo->StructSize < sizeof(struct PluginInfo)) return 0; pInfo->StructSize = sizeof(struct PluginInfo); pInfo->PluginIdent = PLUGIN_IDENTIFIER_DATA; pInfo->PluginVersion = 10100; // Version 1.1.0 pInfo->CapabilityFlags = CustomDataCapability(); strcpy_s(pInfo->Name, "AmiBroker.Top.Data.Plugin"); strcpy_s(pInfo->Vendor, "Quant Developer Labs"); return 1; // Initialization and Notification Handler extern "C" __declspec(dllexport) int Notify(struct PluginNotification *pNotify) if (!pNotify) return 0; switch (pNotify->Reason) case NOTIFY_DATABASE_LOAD: // Global network/API allocations happen here break; case NOTIFY_DATABASE_UNLOAD: // Clean up resources safely break; return 1; // Helper to generate deterministic synthetic price arrays void GenerateSyntheticData(struct Quotation* pQuotes, int requestedBars) double price = 100.0; time_t rawTime; time(&rawTime); // Subtract historical bars (e.g., daily bars) rawTime -= (requestedBars * 86400); for (int i = 0; i < requestedBars; ++i) double change = ((double)rand() / RAND_MAX - 0.5) * 2.0; double open = price; double close = price + change; double high = (open > close ? open : close) + ((double)rand() / RAND_MAX * 0.5); double low = (open < close ? open : close) - ((double)rand() / RAND_MAX * 0.5); long volume = 10000 + (rand() % 50000); // Map standard epoch time to AmiBroker's internal PackedDate format struct tm timeInfo; localtime_s(&timeInfo, &rawTime); pQuotes[i].DateTime.PackDate.Year = timeInfo.tm_year + 1900; pQuotes[i].DateTime.PackDate.Month = timeInfo.tm_mon + 1; pQuotes[i].DateTime.PackDate.Day = timeInfo.tm_mday; pQuotes[i].DateTime.PackDate.Hour = timeInfo.tm_hour; pQuotes[i].DateTime.PackDate.Minute = timeInfo.tm_min; pQuotes[i].DateTime.PackDate.Second = timeInfo.tm_sec; pQuotes[i].Open = (float)open; pQuotes[i].High = (float)high; pQuotes[i].Low = (float)low; pQuotes[i].Close = (float)close; pQuotes[i].Volume = (float)volume; pQuotes[i].OpenInterest = 0.0f; price = close; // Step to next bar rawTime += 86400; // Increment by one day // Data Engine Pipeline Handler extern "C" __declspec(dllexport) int GetQuotesEx(lpstr Ticker, int Periodicity, int LastValidBar, int TotalBars, struct Quotation *pQuotes, struct InsideBidAsk *pBidAsk) // If AmiBroker requires size calculation (pQuotes is null) if (pQuotes == nullptr) return 500; // Force allocation allocation room for 500 bars // If array room is present, fill data elements if (TotalBars > 0) GenerateSyntheticData(pQuotes, TotalBars); return TotalBars; return 0; Use code with caution. 5. Integrating Live Network Data (WebSockets / Async REST) struct Quotation *pQuotes

To understand the source code, one must first understand the interface. Amibroker does not simply read raw text files; it utilizes a plugin architecture based on a standardized interface definition (often utilizing C++). This allows third-party developers to create Dynamic Link Libraries (DLLs) that act as a bridge between a data vendor’s API and the Amibroker charting engine.

The "top" of the source code hierarchy refers to the entry points and the structural headers that define how the plugin communicates with the host application. The source code is typically structured around a set of callback functions and exported methods that Amibroker calls during its runtime cycle. These functions handle everything from the initial handshake (identifying the plugin name and version) to the granular retrieval of price ticks.

GetQuotesEx : The primary function for retrieving data. It handles 64-bit date/time stamps and floating-point values for volume and open interest. OpenInterest // 3.

An industry-standard AmiBroker data plugin implementation includes these essential functions and architectural features: How to use AmiBroker with Interactive Brokers TWS

extern "C" __declspec(dllexport) int GetQuotesEx(lpstr Ticker, int Periodicity, int LastValidBar, int TotalBars, struct Quotation *pQuotes, struct InsideBidAsk *pBidAsk) // 1. Check local cache or call external API for 'Ticker' data // 2. Populate the pQuotes array with Date, Open, High, Low, Close, Volume, OpenInterest // 3. Return the number of elements written to the pQuotes array return TotalBars; Use code with caution. 4. Production-Ready Data Plugin Source Code