private FrameWriterInterfaceHelper

src/Extension/Frame.cpp

@@ -210,5 +210,39 @@ void FrameMerger::flush() {
     }
     clear();
 }
+/**
+ * 写帧接口转function，辅助类
+ */
+class FrameWriterInterfaceHelper : public FrameWriterInterface {
+public:
+    typedef std::shared_ptr<FrameWriterInterfaceHelper> Ptr;
+    typedef std::function<bool(const Frame::Ptr &frame)> onWriteFrame;
+
+    /**
+     * inputFrame后触发onWriteFrame回调
+     */
+    FrameWriterInterfaceHelper(const onWriteFrame& cb){
+        _writeCallback = cb;
+    }
+
+    virtual ~FrameWriterInterfaceHelper(){}
+
+    /**
+     * 写入帧数据
+     */
+    bool inputFrame(const Frame::Ptr &frame) override {
+        return _writeCallback(frame);
+    }
+
+private:
+    onWriteFrame _writeCallback;
+};
+
+FrameWriterInterface* FrameDispatcher::addDelegate(const std::function<bool(const Frame::Ptr &frame)> &cb) {
+    auto delegate = std::make_shared<FrameWriterInterfaceHelper>(cb);
+    std::lock_guard<std::mutex> lck(_mtx);
+    _delegates.emplace(delegate.get(), delegate);
+    return delegate.get();
+}
 
 }//namespace mediakit