Add support for the StreamDeck

Controllers/StreamDeckController/ElgatoStreamDeckController.cpp

@@ -0,0 +1,85 @@
+/*---------------------------------------------------------*\
+| ElgatoStreamDeckController.cpp                            |
+|                                                           |
+|   Driver for Elgato Stream Deck MK.2                      |
+|                                                           |
+|   Ferréol DUBOIS COLI (Fefe_du_973)           23 Jan 2025 |
+|                                                           |
+|   This file is part of the OpenRGB project                |
+|   SPDX-License-Identifier: GPL-2.0-only                   |
+\*---------------------------------------------------------*/
+
+#include <cstring>
+#include <vector>
+#include "ElgatoStreamDeckController.h"
+#include "StringUtils.h"
+
+ElgatoStreamDeckController::ElgatoStreamDeckController(hid_device* dev_handle, const char* path) :
+    dev(dev_handle), location(path)
+{
+}
+
+ElgatoStreamDeckController::~ElgatoStreamDeckController()
+{
+    hid_close(dev);
+}
+
+std::string ElgatoStreamDeckController::GetLocation()
+{
+    return location;
+}
+
+std::string ElgatoStreamDeckController::GetSerialString()
+{
+    wchar_t serial[256];
+    if(hid_get_serial_number_string(dev, serial, 256) >= 0)
+    {
+        std::wstring ws(serial);
+        return StringUtils::wstring_to_string(ws);
+    }
+    return "";
+}
+
+void ElgatoStreamDeckController::SetBrightness(unsigned char brightness)
+{
+    unsigned char buffer[32] = {0x03, 0x08, brightness};
+    hid_send_feature_report(dev, buffer, sizeof(buffer));
+}
+
+void ElgatoStreamDeckController::SendFullFrame(const std::vector<std::vector<unsigned char>>& buttonImages)
+{
+    for(int btnIdx = 0; btnIdx < 15; btnIdx++)
+    {
+        if(btnIdx < buttonImages.size())
+        {
+            SendButtonImage(btnIdx, buttonImages[btnIdx]);
+        }
+    }
+}
+
+void ElgatoStreamDeckController::SendButtonImage(int buttonIndex, const std::vector<unsigned char>& jpegData)
+{
+    const size_t headerSize = 8;
+    const size_t packetSize = 1024;
+    unsigned char buffer[packetSize] = {0};
+
+    buffer[0] = 0x02;
+    buffer[1] = 0x07;
+    buffer[2] = buttonIndex;
+    buffer[3] = 0x01;
+    buffer[4] = jpegData.size() & 0xFF;
+    buffer[5] = (jpegData.size() >> 8) & 0xFF;
+    buffer[6] = 0x00;
+    buffer[7] = 0x00;
+
+    size_t bytesToCopy = std::min(jpegData.size(), packetSize - headerSize);
+    memcpy(buffer + headerSize, jpegData.data(), bytesToCopy);
+
+    hid_write(dev, buffer, packetSize);
+}
+
+void ElgatoStreamDeckController::Reset()
+{
+    unsigned char resetBuffer[32] = {0x03, 0x02};
+    hid_send_feature_report(dev, resetBuffer, sizeof(resetBuffer));
+}