整理代码

video/core/VideoMixer.h

@@ -0,0 +1,118 @@
+#ifndef D84CC9FA_711B_4439_A0F8_424C43E082CB
+#define D84CC9FA_711B_4439_A0F8_424C43E082CB
+/*
+ *******************************************************************************
+ *                                   INCLUDE
+ *******************************************************************************
+ */
+#include "VideoComponent.h"
+#include "util/FactoryManager.h"
+#include <unordered_map>
+
+namespace Video
+{
+namespace Core
+{
+/*
+ *******************************************************************************
+ *                                CLASS DECLARE
+ *******************************************************************************
+ */
+class VideoMixerSelector
+{
+public:
+    static int select(const std::string&)
+    {
+        return 0;
+    }
+};
+
+class VideoMixer: public VideoComponent,
+                  public ::Util::FactoryManager<VideoMixer, int, VideoMixerSelector, const std::string&>
+{
+public:
+    using Ptr = Poco::AutoPtr<VideoMixer>;
+    class Channel: public VideoComponent
+    {
+    public:
+        using Ptr = Poco::AutoPtr<Channel>;
+
+        struct Region
+        {
+            double x;
+            double y;
+            double width;
+            double height;
+
+            bool operator==(const Region& other) const
+            {
+                return std::abs(x - other.x) < 1e-9 && std::abs(y - other.y) < 1e-9 &&
+                       std::abs(width - other.width) < 1e-9 && std::abs(height - other.height) < 1e-9;
+            }
+
+            bool operator!=(const Region& other) const
+            {
+                return !(this->operator==(other));
+            }
+        };
+
+    protected:
+        Channel(const std::string& name, VideoMixer::Ptr, uint32_t id);
+
+    public:
+        ~Channel();
+
+        CONFIGURABLE_DECLARE_PARAMETER(Region, Region)
+        CONFIGURABLE_DECLARE_PARAMETER(ZOrder, int)
+        CONFIGURABLE_DECLARE_PARAMETER(Attach, bool)
+        CONFIGURABLE_DECLARE_PARAMETER(Input, VideoComponent::Ptr)
+
+        uint32_t id() const;
+
+    protected:
+        void            onConfigChanged(ParameterNames& names) override;
+        VideoMixer::Ptr mixer();
+
+    private:
+        VideoMixer::Ptr _pMixer;
+        uint32_t        _id;
+
+        friend VideoMixer;
+    };
+
+public:
+    VideoMixer(const std::string& name);
+    ~VideoMixer();
+
+    Channel::Ptr getChannel(uint32_t id);
+
+protected:
+    void start() override;
+    void stop() override;
+
+    virtual Channel::Ptr createChannel(uint32_t id) = 0;
+
+    template <class T, typename F> void foreachChannel(F&&);
+
+private:
+    std::unordered_map<uint32_t, Channel::Ptr> _channels;
+};
+
+inline uint32_t VideoMixer::Channel::id() const
+{
+    return _id;
+}
+
+inline VideoMixer::Ptr VideoMixer::Channel::mixer()
+{
+    return _pMixer;
+}
+
+template <class T, typename F> inline void VideoMixer::foreachChannel(F&& exec)
+{
+    for (auto m : _channels)
+        exec(m.second.cast<T>());
+}
+}
+}
+#endif