pref: 增加开启摄像头失败重试功能

capture.cc

@@ -9,6 +9,21 @@
 #include "logc/log.h"
 #include <unistd.h>
 
+void adjustImageTemperature(cv::Mat &img, float scale)
+{
+    // 分离通道
+    std::vector<cv::Mat> channels;
+    split(img, channels);
+
+    // 增加蓝色通道和绿色通道的值，减少红色通道的值
+    channels[0] = channels[0] * scale; // 蓝色通道
+    channels[1] = channels[1] * scale; // 绿色通道
+    channels[2] = channels[2] / scale; // 红色通道
+
+    // 合并通道
+    merge(channels, img);
+}
+
 capture::capture(int camera_index, int zmq_port, int width_set, int height_set, int fps_set, bool _flip)
 {
     index = camera_index;
@@ -18,22 +33,48 @@ capture::capture(int camera_index, int zmq_port, int width_set, int height_set,
     fps = fps_set;
     flip = _flip;
 
-    log_info("trying open camera %d", index);
+    log_info("尝试开启摄像头 %d", index);
 
     cap = new cv::VideoCapture(index, cv::CAP_V4L2);
+
+    sleep(2); // 等待两秒进行构造
+
     cap->set(cv::CAP_PROP_FRAME_WIDTH, width);
     cap->set(cv::CAP_PROP_FRAME_HEIGHT, height);
     cap->set(cv::CAP_PROP_FPS, fps);
 
-    if (!cap->isOpened())
+    // if (10 == camera_index)
+    // {
+    //     int fourcc = cv::VideoWriter::fourcc('M', 'J', 'P', 'G'); // 例如，使用 MJPG 编码
+    //     // 设置输出视频的分辨率和帧率，与输入视频一致或根据需要调整
+    //     cv::Size frameSize = cv::Size((int)cap->get(cv::CAP_PROP_FRAME_WIDTH),
+    //                                   (int)cap->get(cv::CAP_PROP_FRAME_HEIGHT));
+    //     int fps = (int)cap->get(cv::CAP_PROP_FPS);
+    //     writer = new cv::VideoWriter("/home/evan/Workplace/project_capture/capture.avi", fourcc, fps, frameSize, true);
+    // }
+
+    int cnt = 1;
+    for (int i = 20; i > 0; i--)
     {
-        log_error("开启摄像头 %d 失败", index);
+        if (cap->isOpened())
+        {
+            status = true;
+            break;
+        }
+
+        log_error("开启摄像头 %d 失败，重试中", index);
+        cap->open(index, cv::CAP_V4L2);
+        usleep(100000);
         status = false;
     }
+
+    if (status)
+    {
+        log_info("开启摄像头 %d 成功", index);
+    }
     else
     {
-        log_info("开启摄像头 %d 成功", index);
-        status = true;
+        log_fatal("开启摄像头 %d 十次重试后失败", index);
     }
 
     context = new zmq::context_t(1);
@@ -85,6 +126,10 @@ void capture::get(void)
             *cap >> dst;
         }
 
+        // if(nullptr != writer){
+        //     writer->write(dst);
+        // }
+
         // 确保图像是连续的
         if (!dst.isContinuous())
         {
@@ -97,6 +142,8 @@ void capture::get(void)
             cv::flip(dst, dst, -1);
         }
 
+        // adjustImageTemperature(dst, 1.2);
+
         // 将图像转换为 rgb
         cv::cvtColor(dst, frame, cv::COLOR_BGR2RGB);