viewer: implement lookahead to ensure footage is ready in advance

2022-07-26 14:49:19 -07:00
parent d1ec2b909b
commit 25e94112f8
9 changed files with 137 additions and 62 deletions
@@ -97,9 +97,12 @@ public:

  enum ReturnType {
    kTexture,
-    kFrame
+    kFrame,
+    kNull
  };

+  static const rational kDryRunInterval;
+
  /**
   * @brief Asynchronously generate a frame at a given time
   *
@@ -168,6 +171,7 @@ private:
  QTimer *decoder_clear_timer_;

  RenderThread *video_thread_;
+  RenderThread *dry_run_thread_;
  RenderThread *audio_thread_;

 private slots: