add eHDR controls

CameraController.cpp

@@ -74,6 +74,18 @@ std::string CameraController::processCommand(const std::string& jsonCommand) {
         return handleStopStream();
     } else if (command == "set_pipeline") {
         return handleSetPipeline(getParam("pipeline"));
+    } else if (command == "set_ehdr_mode") {
+        return handleSetEHDRMode(getParam("mode"));
+    } else if (command == "set_ehdr_exposure_min") {
+        return handleSetEHDRExposureMin(getParam("value"));
+    } else if (command == "set_ehdr_exposure_max") {
+        return handleSetEHDRExposureMax(getParam("value"));
+    } else if (command == "set_ehdr_ratio_min") {
+        return handleSetEHDRRatioMin(getParam("value"));
+    } else if (command == "set_ehdr_ratio_max") {
+        return handleSetEHDRRatioMax(getParam("value"));
+    } else if (command == "get_ehdr_status") {
+        return handleGetEHDRStatus();
     } else {
         return createErrorResponse("Unknown command: " + command);
     }
@@ -233,6 +245,89 @@ std::string CameraController::handleSetGain(const std::string& value) {
     }
 }
 
+std::string CameraController::handleSetEHDRMode(const std::string& value) {
+    try {
+        const int mode = std::stoi(value);
+        if (VxSetISPImageProcessing(camera_, VX_ISP_IMAGE_PROPERTIES::ISP_IMAGE_EHDR_MODE, mode) != 0) {
+            return createErrorResponse("Failed to set eHDR mode");
+        }
+        return createSuccessResponse("eHDR mode set successfully");
+    } catch (const std::exception& e) {
+        return createErrorResponse(std::string("Invalid parameters: ") + e.what());
+    }
+}
+
+std::string CameraController::handleSetEHDRExposureMin(const std::string& value) {
+    try {
+        const int minExp = std::stoi(value);
+        if (VxSetISPImageProcessing(camera_, VX_ISP_IMAGE_PROPERTIES::ISP_EHDR_EXPOSURE_MIN_NUMBER, minExp) != 0) {
+            return createErrorResponse("Failed to set eHDR exposure min");
+        }
+        return createSuccessResponse("eHDR exposure min set successfully");
+    } catch (const std::exception& e) {
+        return createErrorResponse(std::string("Invalid parameters: ") + e.what());
+    }
+}
+
+std::string CameraController::handleSetEHDRExposureMax(const std::string& value) {
+    try {
+        const int maxExp = std::stoi(value);
+        if (VxSetISPImageProcessing(camera_, VX_ISP_IMAGE_PROPERTIES::ISP_EHDR_EXPOSURE_MAX_NUMBER, maxExp) != 0) {
+            return createErrorResponse("Failed to set eHDR exposure max");
+        }
+        return createSuccessResponse("eHDR exposure max set successfully");
+    } catch (const std::exception& e) {
+        return createErrorResponse(std::string("Invalid parameters: ") + e.what());
+    }
+}
+
+std::string CameraController::handleSetEHDRRatioMin(const std::string& value) {
+    try {
+        const int minRatio = std::stoi(value);
+        if (VxSetISPImageProcessing(camera_, VX_ISP_IMAGE_PROPERTIES::ISP_EHDR_RATIO_MIN, minRatio) != 0) {
+            return createErrorResponse("Failed to set eHDR ratio min");
+        }
+        return createSuccessResponse("eHDR ratio min set successfully");
+    } catch (const std::exception& e) {
+        return createErrorResponse(std::string("Invalid parameters: ") + e.what());
+    }
+}
+
+std::string CameraController::handleSetEHDRRatioMax(const std::string& value) {
+    try {
+        const int maxRatio = std::stoi(value);
+        if (VxSetISPImageProcessing(camera_, VX_ISP_IMAGE_PROPERTIES::ISP_EHDR_RATIO_MAX, maxRatio) != 0) {
+            return createErrorResponse("Failed to set eHDR ratio max");
+        }
+        return createSuccessResponse("eHDR ratio max set successfully");
+    } catch (const std::exception& e) {
+        return createErrorResponse(std::string("Invalid parameters: ") + e.what());
+    }
+}
+
+std::string CameraController::handleGetEHDRStatus() {
+    int mode = 0, flag = 0;
+    int expMin = 0, expMax = 0;
+    int ratioMin = 0, ratioMax = 0;
+
+    if (VxGetISPImageProcessing(camera_, VX_ISP_IMAGE_PROPERTIES::ISP_IMAGE_EHDR_MODE, mode, flag) != 0) {
+        return createErrorResponse("Failed to get eHDR mode");
+    }
+
+    VxGetISPImageProcessing(camera_, VX_ISP_IMAGE_PROPERTIES::ISP_EHDR_EXPOSURE_MIN_NUMBER, expMin, flag);
+    VxGetISPImageProcessing(camera_, VX_ISP_IMAGE_PROPERTIES::ISP_EHDR_EXPOSURE_MAX_NUMBER, expMax, flag);
+    VxGetISPImageProcessing(camera_, VX_ISP_IMAGE_PROPERTIES::ISP_EHDR_RATIO_MIN, ratioMin, flag);
+    VxGetISPImageProcessing(camera_, VX_ISP_IMAGE_PROPERTIES::ISP_EHDR_RATIO_MAX, ratioMax, flag);
+
+    std::ostringstream oss;
+    oss << "{\"status\":\"success\",\"ehdr_mode\":" << mode
+        << ",\"exposure_min\":" << expMin
+        << ",\"exposure_max\":" << expMax
+        << ",\"ratio_min\":" << ratioMin
+        << ",\"ratio_max\":" << ratioMax << "}";
+    return oss.str();
+}
+
 std::string CameraController::handleGetStatus() {
     std::ostringstream oss;
     oss << "{\"status\":\"success\",\"streaming\":" << (streamingEngine_->isRunning() ? "true" : "false")

CameraController.h

@@ -33,6 +33,12 @@ private:
     std::string handleStartStream();
     std::string handleStopStream();
     std::string handleSetPipeline(const std::string& pipeline);
+    std::string handleSetEHDRMode(const std::string& value);
+    std::string handleSetEHDRExposureMin(const std::string& value);
+    std::string handleSetEHDRExposureMax(const std::string& value);
+    std::string handleSetEHDRRatioMin(const std::string& value);
+    std::string handleSetEHDRRatioMax(const std::string& value);
+    std::string handleGetEHDRStatus();
 
     // Helper functions
     VX_IMAGE_FORMAT stringToFormat(const std::string& format);

SOCKET_API.md

@@ -433,6 +433,168 @@ Adjust camera gain.
 
 ---
 
+### 15. Set eHDR Mode
+
+Enable or disable eHDR (Enhanced High Dynamic Range) mode.
+
+**Note:** eHDR features are only available on specific camera models: VCI-AR0821/AR0822, VCS-AR0821/AR0822, VLS3-AR0821/AR0822, VLS-GM2-AR0821/AR0822, and TEVS-AR0821/AR0822.
+
+**Command:**
+```json
+{
+  "command": "set_ehdr_mode",
+  "params": {
+    "mode": "0"
+  }
+}
+```
+
+**Parameters:**
+- `mode`: "0" to enable eHDR, "1" to disable eHDR
+
+**Response:**
+```json
+{
+  "status": "success",
+  "message": "eHDR mode set successfully"
+}
+```
+
+---
+
+### 16. Set eHDR Exposure Minimum
+
+Set the minimum number of exposure frames for eHDR.
+
+**Command:**
+```json
+{
+  "command": "set_ehdr_exposure_min",
+  "params": {
+    "value": "1"
+  }
+}
+```
+
+**Parameters:**
+- `value`: Minimum exposure frames (range: 1-4, default: 1)
+
+**Response:**
+```json
+{
+  "status": "success",
+  "message": "eHDR exposure min set successfully"
+}
+```
+
+---
+
+### 17. Set eHDR Exposure Maximum
+
+Set the maximum number of exposure frames for eHDR.
+
+**Command:**
+```json
+{
+  "command": "set_ehdr_exposure_max",
+  "params": {
+    "value": "4"
+  }
+}
+```
+
+**Parameters:**
+- `value`: Maximum exposure frames (range: 1-4, default: 4)
+
+**Response:**
+```json
+{
+  "status": "success",
+  "message": "eHDR exposure max set successfully"
+}
+```
+
+---
+
+### 18. Set eHDR Ratio Minimum
+
+Set the minimum exposure ratio for eHDR.
+
+**Command:**
+```json
+{
+  "command": "set_ehdr_ratio_min",
+  "params": {
+    "value": "12"
+  }
+}
+```
+
+**Parameters:**
+- `value`: Minimum exposure ratio (range: 1-128, default: 12)
+
+**Response:**
+```json
+{
+  "status": "success",
+  "message": "eHDR ratio min set successfully"
+}
+```
+
+---
+
+### 19. Set eHDR Ratio Maximum
+
+Set the maximum exposure ratio for eHDR.
+
+**Command:**
+```json
+{
+  "command": "set_ehdr_ratio_max",
+  "params": {
+    "value": "24"
+  }
+}
+```
+
+**Parameters:**
+- `value`: Maximum exposure ratio (range: 1-128, default: 24)
+
+**Response:**
+```json
+{
+  "status": "success",
+  "message": "eHDR ratio max set successfully"
+}
+```
+
+---
+
+### 20. Get eHDR Status
+
+Retrieve all current eHDR settings.
+
+**Command:**
+```json
+{
+  "command": "get_ehdr_status"
+}
+```
+
+**Response:**
+```json
+{
+  "status": "success",
+  "ehdr_mode": 0,
+  "exposure_min": 1,
+  "exposure_max": 4,
+  "ratio_min": 12,
+  "ratio_max": 24
+}
+```
+
+---
+
 ## Usage Examples
 
 ### Complete Workflow Example
@@ -448,6 +610,13 @@ echo '{"command":"set_format","params":{"width":"1920","height":"1080","framerat
 echo '{"command":"set_exposure","params":{"mode":"auto"}}' | socat - UNIX-CONNECT:/tmp/vizion_control.sock
 echo '{"command":"set_brightness","params":{"value":"50"}}' | socat - UNIX-CONNECT:/tmp/vizion_control.sock
 
+# 3a. (Optional) Configure eHDR settings (for compatible cameras)
+echo '{"command":"set_ehdr_mode","params":{"mode":"0"}}' | socat - UNIX-CONNECT:/tmp/vizion_control.sock
+echo '{"command":"set_ehdr_exposure_min","params":{"value":"1"}}' | socat - UNIX-CONNECT:/tmp/vizion_control.sock
+echo '{"command":"set_ehdr_exposure_max","params":{"value":"4"}}' | socat - UNIX-CONNECT:/tmp/vizion_control.sock
+echo '{"command":"set_ehdr_ratio_min","params":{"value":"12"}}' | socat - UNIX-CONNECT:/tmp/vizion_control.sock
+echo '{"command":"set_ehdr_ratio_max","params":{"value":"24"}}' | socat - UNIX-CONNECT:/tmp/vizion_control.sock
+
 # 4. Start streaming
 echo '{"command":"start_stream"}' | socat - UNIX-CONNECT:/tmp/vizion_control.sock
 
@@ -499,6 +668,27 @@ echo '{"command":"get_status"}' | socat - UNIX-CONNECT:/tmp/vizion_control.sock
 echo '{"command":"stop_stream"}' | socat - UNIX-CONNECT:/tmp/vizion_control.sock
 ```
 
+### eHDR Control Examples
+
+```bash
+# Enable eHDR mode
+echo '{"command":"set_ehdr_mode","params":{"mode":"0"}}' | socat - UNIX-CONNECT:/tmp/vizion_control.sock
+
+# Disable eHDR mode
+echo '{"command":"set_ehdr_mode","params":{"mode":"1"}}' | socat - UNIX-CONNECT:/tmp/vizion_control.sock
+
+# Configure eHDR exposure range
+echo '{"command":"set_ehdr_exposure_min","params":{"value":"1"}}' | socat - UNIX-CONNECT:/tmp/vizion_control.sock
+echo '{"command":"set_ehdr_exposure_max","params":{"value":"4"}}' | socat - UNIX-CONNECT:/tmp/vizion_control.sock
+
+# Configure eHDR ratio range
+echo '{"command":"set_ehdr_ratio_min","params":{"value":"12"}}' | socat - UNIX-CONNECT:/tmp/vizion_control.sock
+echo '{"command":"set_ehdr_ratio_max","params":{"value":"24"}}' | socat - UNIX-CONNECT:/tmp/vizion_control.sock
+
+# Get current eHDR settings
+echo '{"command":"get_ehdr_status"}' | socat - UNIX-CONNECT:/tmp/vizion_control.sock
+```
+
 ### Using `nc` (netcat with Unix socket support)
 
 ```bash
@@ -535,6 +725,14 @@ print(send_command("set_format", {
 }))
 print(send_command("set_exposure", {"mode": "auto"}))
 print(send_command("start_stream"))
+
+# eHDR control examples (for compatible cameras)
+print(send_command("set_ehdr_mode", {"mode": "0"}))  # Enable eHDR
+print(send_command("set_ehdr_exposure_min", {"value": "1"}))
+print(send_command("set_ehdr_exposure_max", {"value": "4"}))
+print(send_command("set_ehdr_ratio_min", {"value": "12"}))
+print(send_command("set_ehdr_ratio_max", {"value": "24"}))
+print(send_command("get_ehdr_status"))  # Get current eHDR settings
 ```
 
 ### Using C++
@@ -569,6 +767,13 @@ std::string sendCommand(const std::string& command) {
 int main() {
     std::cout << sendCommand(R"({"command":"get_formats"})") << std::endl;
     std::cout << sendCommand(R"({"command":"set_brightness","params":{"value":"50"}})") << std::endl;
+
+    // eHDR control examples (for compatible cameras)
+    std::cout << sendCommand(R"({"command":"set_ehdr_mode","params":{"mode":"0"}})") << std::endl;
+    std::cout << sendCommand(R"({"command":"set_ehdr_exposure_min","params":{"value":"1"}})") << std::endl;
+    std::cout << sendCommand(R"({"command":"set_ehdr_exposure_max","params":{"value":"4"}})") << std::endl;
+    std::cout << sendCommand(R"({"command":"get_ehdr_status"})") << std::endl;
+
     return 0;
 }
 ```
@@ -587,6 +792,20 @@ The valid ranges for camera parameters depend on the specific camera model. You
 - Exposure: 1-10000 (in auto mode, value is ignored)
 - White Balance Temperature: 2800-6500 Kelvin
 
+**eHDR ranges (for compatible cameras only):**
+- eHDR Mode: 0 (enable) or 1 (disable)
+- eHDR Exposure Min: 1-4 (default: 1)
+- eHDR Exposure Max: 1-4 (default: 4)
+- eHDR Ratio Min: 1-128 (default: 12)
+- eHDR Ratio Max: 1-128 (default: 24)
+
+**Compatible eHDR Camera Models:**
+- VCI-AR0821/AR0822
+- VCS-AR0821/AR0822
+- VLS3-AR0821/AR0822
+- VLS-GM2-AR0821/AR0822
+- TEVS-AR0821/AR0822
+
 ## Error Handling
 
 Always check the `status` field in the response:
@@ -661,3 +880,5 @@ curl http://192.168.1.100:8080 > stream.mjpg
 - Invalid parameter values will return an error response
 - GStreamer pipeline errors will be reported when starting the stream
 - Default pipeline: `videoconvert ! autovideosink` (display locally)
+- eHDR features require compatible camera models (VCI/VCS/VLS3/VLS-GM2/TEVS-AR0821/AR0822)
+- eHDR settings may be reset to defaults when the camera starts streaming (driver behavior)

StreamingEngine.cpp

@@ -4,7 +4,7 @@
 #include <utility>
 
 StreamingEngine::StreamingEngine(std::shared_ptr<VxCamera> camera)
-    : camera_(std::move(camera)), running_(false), bufferSize_(0) {
+    : camera_(std::move(camera)), running_(false), currentFormat_(), bufferSize_(0) {
     gstPipeline_ = std::make_unique<GStreamerPipeline>("");
 }