[feat] set screen capture frame rate to 60 fps

src/screen_capturer/linux/screen_capturer_x11.h

@@ -52,7 +52,7 @@ class ScreenCapturerX11 : public ScreenCapturer {
   std::atomic<bool> running_{false};
   std::atomic<bool> paused_{false};
   std::atomic<int> monitor_index_{0};
-  int fps_ = 30;
+  int fps_ = 60;
   cb_desktop_data callback_;
   std::vector<DisplayInfo> display_info_list_;
 

src/screen_capturer/macosx/screen_capturer_sck_impl.mm

@@ -76,7 +76,7 @@ class API_AVAILABLE(macos(14.0)) ScreenCapturerSckImpl : public ScreenCapturer {
   unsigned char *nv12_frame_ = nullptr;
   int width_ = 0;
   int height_ = 0;
-  int fps_ = 30;
+  int fps_ = 60;
 
  public:
   // Called by SckHelper when shareable content is returned by ScreenCaptureKit. `content` will be

src/screen_capturer/windows/screen_capturer_wgc.h

@@ -57,7 +57,7 @@ class ScreenCapturerWgc : public ScreenCapturer,
   std::atomic_bool running_;
   std::atomic_bool inited_;
 
-  int fps_;
+  int fps_ = 60;
 
   cb_desktop_data on_data_ = nullptr;
 

src/single_window/render.cpp

@@ -330,7 +330,7 @@ int Render::ScreenCapturerInit() {
                             std::chrono::steady_clock::now().time_since_epoch())
                             .count();
         auto duration = now_time - last_frame_time_;
-        if (duration >= 33) {
+        if (duration >= 16) {  // ~60 FPS
           XVideoFrame frame;
           frame.data = (const char*)data;
           frame.size = size;