save timelapse stream to file

src/app.cpp

@@ -471,6 +471,8 @@ void App::init()
 
     uirtt.create(width, height, -1, GL_RGBA8, true);
 
+    rec_start();
+
     if (!check_license())
     {
         message_box("License", "Could not validate this license, running in demo mode.");
@@ -695,10 +697,10 @@ void App::update_rec_frames()
 {
     if (auto txt = layout[main_id]->find<NodeText>("txt-rec"))
     {
-        if (rec_running)
+        if (rec_running && Canvas::I->m_encoder)
         {
             static char buffer[128];
-            sprintf(buffer, "Recorded %d frames", rec_count);
+            sprintf(buffer, "Recorded %d frames", Canvas::I->m_encoder->frames_count());
             txt->set_text(buffer);
         }
         else
@@ -779,7 +781,7 @@ void App::rec_export(std::string path)
     });
 #endif
 */
-    m_encoder->write_mp4(data_path + "/export.mp4");
+    Canvas::I->m_encoder->write_mp4(data_path + "/export.mp4");
     
     pb->destroy();
 }
@@ -788,11 +790,6 @@ void App::rec_loop()
 {
     BT_SetTerminate();
     rec_running = true;
-    if (!m_encoder)
-    {
-        m_encoder = std::make_unique<MP4Encoder>();
-        m_encoder->init(1024, 512, 30, 500 << 10);
-    }
     while(rec_running)
     {
         std::unique_ptr<Image> frame;
@@ -810,8 +807,8 @@ void App::rec_loop()
             rec_frames.pop_front();
         }
         lock.unlock();
-        if (frame)
-            m_encoder->encode(*frame);
+        if (frame && Canvas::I->m_encoder)
+            Canvas::I->m_encoder->encode(*frame);
         update_rec_frames();
     }
 }