add multi cam support

README.md

@@ -35,6 +35,32 @@ cmake --build build
 ./build/vizionStreamer
 ```
 
+### Multi-Camera
+
+Run one instance per camera, each with its own camera index and socket path:
+
+```bash
+./build/vizionStreamer --camera 0 --socket /tmp/vizion_cam0.sock &
+./build/vizionStreamer --camera 1 --socket /tmp/vizion_cam1.sock &
+```
+
+Point the control scripts at a specific instance with `VIZION_SOCKET`:
+
+```bash
+VIZION_SOCKET=/tmp/vizion_cam0.sock ./scripts/start_stream.sh
+VIZION_SOCKET=/tmp/vizion_cam1.sock ./scripts/set_pipeline_udp.sh 192.168.1.100 5001
+```
+
+Without the env var, scripts default to `/tmp/vizion_control.sock` (single-camera usage).
+
+CLI options:
+
+```
+-c, --camera <idx>   Camera index to open (default: auto-detect VCI-AR0234, else 0)
+-s, --socket <path>  Control socket path (default: /tmp/vizion_control.sock)
+-h, --help           Show help
+```
+
 ### Start Streaming (Default Pipeline)
 
 In another terminal:

scripts/get_formats.sh

@@ -1,6 +1,6 @@
 #!/bin/bash
 # Get available camera formats
 
-SOCKET="/tmp/vizion_control.sock"
+SOCKET="${VIZION_SOCKET:-/tmp/vizion_control.sock}"
 
 echo '{"command":"get_formats"}' | socat - UNIX-CONNECT:$SOCKET | python3 -m json.tool 2>/dev/null || echo '{"command":"get_formats"}' | socat - UNIX-CONNECT:$SOCKET

scripts/get_status.sh

@@ -1,6 +1,6 @@
 #!/bin/bash
 # Get streaming status
 
-SOCKET="/tmp/vizion_control.sock"
+SOCKET="${VIZION_SOCKET:-/tmp/vizion_control.sock}"
 
 echo '{"command":"get_status"}' | socat - UNIX-CONNECT:$SOCKET | python3 -m json.tool 2>/dev/null || echo '{"command":"get_status"}' | socat - UNIX-CONNECT:$SOCKET

scripts/set_pipeline_display.sh

@@ -1,7 +1,7 @@
 #!/bin/bash
 # Set pipeline for local display (default)
 
-SOCKET="/tmp/vizion_control.sock"
+SOCKET="${VIZION_SOCKET:-/tmp/vizion_control.sock}"
 
 echo "Setting display pipeline (default)..."
 echo '{"command":"set_pipeline","params":{"pipeline":"videoconvert ! autovideosink"}}' | socat - UNIX-CONNECT:$SOCKET

scripts/set_pipeline_file.sh

@@ -1,7 +1,7 @@
 #!/bin/bash
 # Set pipeline for recording to file
 
-SOCKET="/tmp/vizion_control.sock"
+SOCKET="${VIZION_SOCKET:-/tmp/vizion_control.sock}"
 FILE="${1:-/tmp/vizion_recording.mp4}"
 
 echo "Setting file recording pipeline to $FILE..."

scripts/set_pipeline_mjpeg.sh

@@ -1,7 +1,7 @@
 #!/bin/bash
 # Set pipeline for MJPEG HTTP streaming
 
-SOCKET="/tmp/vizion_control.sock"
+SOCKET="${VIZION_SOCKET:-/tmp/vizion_control.sock}"
 PORT="${1:-8080}"
 
 # Check if gst-plugins-good with souphttpsink is available

scripts/set_pipeline_mjpeg_passthrough.sh

@@ -2,7 +2,7 @@
 # Optimized pipeline for cameras that already output MJPEG format
 # Passes through MJPEG data without re-encoding
 
-SOCKET="/tmp/vizion_control.sock"
+SOCKET="${VIZION_SOCKET:-/tmp/vizion_control.sock}"
 PORT="${1:-8080}"
 
 # Check if gst-plugins-good with souphttpsink is available

scripts/set_pipeline_udp.sh

@@ -1,7 +1,7 @@
 #!/bin/bash
 # Set pipeline for UDP streaming (H.264)
 
-SOCKET="/tmp/vizion_control.sock"
+SOCKET="${VIZION_SOCKET:-/tmp/vizion_control.sock}"
 HOST="${1:-192.168.1.100}"
 PORT="${2:-5000}"
 

scripts/start_stream.sh

@@ -1,7 +1,7 @@
 #!/bin/bash
 # Quick start script - starts streaming with default pipeline
 
-SOCKET="/tmp/vizion_control.sock"
+SOCKET="${VIZION_SOCKET:-/tmp/vizion_control.sock}"
 
 echo "Starting stream with default pipeline (videoconvert ! autovideosink)..."
 echo '{"command":"start_stream"}' | socat - UNIX-CONNECT:$SOCKET

scripts/stop_stream.sh

@@ -1,7 +1,7 @@
 #!/bin/bash
 # Stop streaming
 
-SOCKET="/tmp/vizion_control.sock"
+SOCKET="${VIZION_SOCKET:-/tmp/vizion_control.sock}"
 
 echo "Stopping stream..."
 echo '{"command":"stop_stream"}' | socat - UNIX-CONNECT:$SOCKET

src/main.cpp

@@ -21,11 +21,65 @@ void signalHandler(int signal) {
     g_running = false;
 }
 
-int main() {
+static void printUsage() {
+    std::cout << "Usage: vizionStreamer [options]\n"
+              << "  -c, --camera <idx>   Camera index to open (default: auto-detect VCI-AR0234, else 0)\n"
+              << "  -s, --socket <path>  Control socket path (default: /tmp/vizion_control.sock)\n"
+              << "  -h, --help           Show this help\n"
+              << "\n"
+              << "Run multiple instances for multiple cameras:\n"
+              << "  ./vizionStreamer --camera 0 --socket /tmp/vizion_cam0.sock\n"
+              << "  ./vizionStreamer --camera 1 --socket /tmp/vizion_cam1.sock\n";
+}
+
+int main(int argc, char* argv[]) {
     // Setup signal handlers for clean shutdown
     signal(SIGINT, signalHandler);
     signal(SIGTERM, signalHandler);
 
+    // Parse CLI arguments
+    int cameraIndex = -1;  // -1 = auto-detect
+    std::string socketPath = "/tmp/vizion_control.sock";
+
+    bool argsOk = true;
+    try {
+        for (int i = 1; i < argc && argsOk; i++) {
+            const std::string arg = argv[i];
+            if (arg == "-h" || arg == "--help") {
+                printUsage();
+                return 0;
+            } else if (arg == "-c" || arg == "--camera") {
+                if (i + 1 >= argc) {
+                    std::cerr << "Missing value for " << arg << std::endl;
+                    argsOk = false;
+                } else {
+                    cameraIndex = std::stoi(argv[++i]);
+                }
+            } else if (arg.rfind("--camera=", 0) == 0) {
+                cameraIndex = std::stoi(arg.substr(9));
+            } else if (arg == "-s" || arg == "--socket") {
+                if (i + 1 >= argc) {
+                    std::cerr << "Missing value for " << arg << std::endl;
+                    argsOk = false;
+                } else {
+                    socketPath = argv[++i];
+                }
+            } else if (arg.rfind("--socket=", 0) == 0) {
+                socketPath = arg.substr(8);
+            } else {
+                std::cerr << "Unknown argument: " << arg << std::endl;
+                argsOk = false;
+            }
+        }
+    } catch (const std::exception& e) {
+        std::cerr << "Invalid argument: " << e.what() << std::endl;
+        argsOk = false;
+    }
+    if (!argsOk) {
+        printUsage();
+        return -1;
+    }
+
     // List available cameras
     std::vector<std::string> devList;
     const int deviceCount = VxDiscoverCameraDevices(devList);
@@ -40,19 +94,26 @@ int main() {
         std::cout << "[" << i << "] " << devList[i] << std::endl;
     }
 
-    // Find VCI-AR0234 camera
-    int cameraIndex = -1;
-    for (size_t i = 0; i < devList.size(); i++) {
-        if (devList[i].find("VCI-AR0234") != std::string::npos) {
-            cameraIndex = static_cast<int>(i);
-            std::cout << "Selected camera [" << cameraIndex << "]: " << devList[i] << std::endl;
-            break;
+    if (cameraIndex >= 0) {
+        if (cameraIndex >= deviceCount) {
+            std::cout << "Camera index " << cameraIndex << " out of range (0-" << deviceCount - 1 << ")" << std::endl;
+            return -1;
+        }
+        std::cout << "Selected camera [" << cameraIndex << "]: " << devList[cameraIndex] << std::endl;
+    } else {
+        // Auto-detect: prefer VCI-AR0234, fall back to index 0
+        for (size_t i = 0; i < devList.size(); i++) {
+            if (devList[i].find("VCI-AR0234") != std::string::npos) {
+                cameraIndex = static_cast<int>(i);
+                std::cout << "Selected camera [" << cameraIndex << "]: " << devList[i] << std::endl;
+                break;
+            }
         }
-    }
 
-    if (cameraIndex == -1) {
-        std::cout << "VCI-AR0234 camera not found, using default (index 0)" << std::endl;
-        cameraIndex = 0;
+        if (cameraIndex == -1) {
+            std::cout << "VCI-AR0234 camera not found, using default (index 0)" << std::endl;
+            cameraIndex = 0;
+        }
     }
 
     // Open camera
@@ -81,7 +142,6 @@ int main() {
 
     const auto controller = std::make_shared<CameraController>(cam);
 
-    const std::string socketPath = "/tmp/vizion_control.sock";
     SocketServer server(socketPath);
 
     if (!server.start([controller](const std::string& cmd) {