This commit is contained in:
bmy
2024-07-04 17:50:05 +08:00
parent 564fd4439f
commit 7b34be682a
3 changed files with 47 additions and 89 deletions

View File

@@ -27,12 +27,12 @@ capture::capture(int camera_index, int zmq_port, int width_set, int height_set,
if (!cap->isOpened())
{
log_error("Error opening video stream in %d", index);
log_error("开启摄像头 %d 失败", index);
status = false;
}
else
{
log_info("Successful opening video stream in %d", index);
log_info("开启摄像头 %d 成功", index);
status = true;
}
@@ -43,7 +43,7 @@ capture::capture(int camera_index, int zmq_port, int width_set, int height_set,
char zmq_bind_port[10] = {0};
sprintf(zmq_bind_port, "%d", port);
strcat(zmq_bind_addr, zmq_bind_port);
log_info("set camera %d zmq address test %s", index, zmq_bind_addr);
log_info("设置 %d zmq 地址 %s", index, zmq_bind_addr);
socket->bind(zmq_bind_addr);
}
@@ -51,68 +51,73 @@ void capture::start(void)
{
if (this->is_open())
{
log_info("start camera %d capture thread", index);
thread = new std::thread(&capture::run, this);
log_info("开启摄像头 %d 采集和应答线程", index);
// FIXME request 启动后若 capture 尚未读取到有效帧,则会断言
thread_capture = new std::thread(&capture::get, this);
sleep(1);
thread_request = new std::thread(&capture::req, this);
}
else
{
log_error("camera %d have not been inited, exit", index);
log_error("摄像头 %d 未成功初始化,跳过", index);
}
}
void capture::run(void)
void capture::get(void)
{
cv::Mat dst;
while (1)
{
zmq::message_t msg_temp;
socket->recv(&msg_temp);
*cap >> frame;
if (frame.empty())
*cap >> dst;
if (dst.empty())
{
// TODO 尝试返回缓存帧,并重新启动 capture
log_error("empty frame");
break;
log_error("摄像头 %d 读取到空帧,尝试销毁后重启", index);
cap->release();
// delete cap;
cap = new cv::VideoCapture(index, cv::CAP_V4L2);
cap->set(cv::CAP_PROP_FRAME_WIDTH, width);
cap->set(cv::CAP_PROP_FRAME_HEIGHT, height);
cap->set(cv::CAP_PROP_FPS, fps);
log_warn("摄像头 %d 重新构造完成\r\n", index);
*cap >> dst;
}
// 确保图像是连续的
if (!frame.isContinuous())
if (!dst.isContinuous())
{
frame = frame.clone().reshape(1, frame.total());
dst = dst.clone().reshape(1, dst.total());
}
// 中心翻转处理
if (flip)
{
cv::flip(frame, frame, -1);
cv::flip(dst, dst, -1);
}
// 将图像转换为 rgb
cv::cvtColor(frame, dst, cv::COLOR_BGR2RGB);
cv::cvtColor(dst, frame, cv::COLOR_BGR2RGB);
// 在这里添加一些延迟,以控制帧率
cv::waitKey(1);
}
}
void capture::req(void)
{
zmq::message_t msg_temp;
while (1)
{
socket->recv(&msg_temp);
// 将帧编码后发送
std::vector<uchar>
buff;
cv::imencode(".jpg", dst, buff);
cv::imencode(".jpg", frame, buff);
zmq::message_t message(buff.size());
memcpy(message.data(), buff.data(), buff.size());
socket->send(message, zmq::send_flags::none);
// 发送帧的元数据(宽度、高度、类型等)
// 这里简单起见,只发送宽度和高度(假设类型为 CV_8UC3
// zmq::message_t header_msg(sizeof(int) * 2);
// int *header_data = static_cast<int *>(header_msg.data());
// header_data[0] = frame.cols;
// header_data[1] = frame.rows;
// socket.send(header_msg, zmq::send_flags::sndmore);
// 发送帧数据
// zmq::message_t frame_msg((size_t)frame.total() * frame.elemSize());
// memcpy(frame_msg.data(), frame.data, frame.total() * frame.elemSize());
// socket->send(frame_msg, zmq::send_flags::none);
// 在这里添加一些延迟,以控制帧率
cv::waitKey(1);
// usleep(20000);
}
log_error("capture exit");