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-rw-r--r--app/camera.cpp49
1 files changed, 20 insertions, 29 deletions
diff --git a/app/camera.cpp b/app/camera.cpp
index bd3dd99..f935f22 100644
--- a/app/camera.cpp
+++ b/app/camera.cpp
@@ -16,7 +16,7 @@
#include "camera.h"
#include <QPainter>
-#include <opencv2/imgproc/imgproc.hpp>
+#include <opencv2/imgproc.hpp>
#include <linux/videodev2.h>
#include <fcntl.h>
@@ -67,54 +67,45 @@ void Camera::enumerateCameras() {
}
camcnt = cam_arr.length();
- cam_arr_bak = cam_arr;
}
void Camera::start(int no, int fps, QString res) {
- try{
- for (QVariantList::iterator iter = cam_arr_bak.begin(); iter != cam_arr_bak.end(); ++iter){
- if (*iter == no){
- cam_arr_bak.erase(iter);
- break;
- }
+ int retryCount = 0;
+ while(!capture->open(no)){
+ if(retryCount++==5){
+ qDebug()<< "Try to open camera for 5 times failed, give up.";
+ return;
+ }else{
+ qDebug()<< "open camera failed, retry " << retryCount;
+ usleep(200000);
}
+ }
- if (capture && capture->open(no)){
- capture->set(CV_CAP_PROP_FRAME_WIDTH, res.section("*", 0, 0).toInt());
- capture->set(CV_CAP_PROP_FRAME_HEIGHT, res.section("*", 1, 1).toInt());
-
- if (fps > 0){
- timer->start(1000/fps);
- running = true;
- emit isrunningChanged(running);
+ capture->set(CAP_PROP_FRAME_WIDTH, res.section("*", 0, 0).toInt());
+ capture->set(CAP_PROP_FRAME_HEIGHT, res.section("*", 1, 1).toInt());
- emit camraCntChanged(cam_arr_bak);
- }
- camnumbackup = no;
- }
- }
- catch(cv::Exception & e) {
- qDebug() << "als-meter-demo open device error: " << e.msg.c_str();
+ if (fps > 0){
+ timer->start(1000/fps);
+ running = true;
+ emit isrunningChanged(running);
}
}
void Camera::stop() {
- cam_arr_bak.push_back(camnumbackup);
-
if (timer->isActive())
timer->stop();
- if (capture && capture->isOpened())
+ if (capture->isOpened()){
+ qDebug()<< "release camera.";
capture->release();
+ }
image = QImage();
update();
running = false;
emit isrunningChanged(running);
-
- emit camraCntChanged(cam_arr_bak);
}
QVariantList Camera::camranum() const{
- return cam_arr_bak;
+ return cam_arr;
}
int Camera::cameraCnt() {