| 48 | } |
| 49 | |
| 50 | std::optional<cv::Mat> MinicapStream::screencap() |
| 51 | { |
| 52 | std::unique_lock locker(mutex_); |
| 53 | if (quit_) { |
| 54 | return std::nullopt; |
| 55 | } |
| 56 | |
| 57 | using namespace std::chrono_literals; |
| 58 | cond_.wait_for(locker, 2s); // 等下一帧 |
| 59 | |
| 60 | return image_.empty() ? std::nullopt : std::make_optional(image_.clone()); |
| 61 | } |
| 62 | |
| 63 | std::optional<std::string> MinicapStream::read(size_t count) |
| 64 | { |