NEW: reimpl wxMediaCtrl from ffmpeg

Jira: none
Change-Id: I46a47118a7649b2a50fcce8911e2888342ef25de
(cherry picked from commit d6c7f08769c8cfdbbf0e80ad280c9b3408a3c27d)
(cherry picked from commit 94d91be60bfe9bbbcdd21f85b46abc3faf126f17)

src/slic3r/GUI/AVVideoDecoder.hpp

@@ -0,0 +1,39 @@
+#ifndef AVVIDEODECODER_HPP
+#define AVVIDEODECODER_HPP
+
+#include "BambuTunnel.h"
+
+extern "C" {
+    #include <libavcodec/avcodec.h>
+    #include <libswscale/swscale.h>
+}
+class wxBitmap;
+
+class AVVideoDecoder
+{
+public:
+    AVVideoDecoder();
+
+    ~AVVideoDecoder();
+
+public:
+    int  open(Bambu_StreamInfo const &info);
+
+    int  decode(Bambu_Sample const &sample);
+
+    int  flush();
+
+    void close();
+
+    bool toWxImage(wxImage &image, wxSize const &size);
+
+    bool toWxBitmap(wxBitmap &bitmap, wxSize const & size);
+
+private:
+    AVCodecContext *codec_ctx_ = nullptr;
+    AVFrame *       frame_     = nullptr;
+    SwsContext *    sws_ctx_   = nullptr;
+    bool got_frame_ = false;
+};
+
+#endif // AVVIDEODECODER_HPP