Display mixing source original texture when inactive

Re-using activesurface_ for manipulation and display of the source's input texture in the Mixer icon when inactive.

MediaPlayer.cpp

@@ -519,7 +519,7 @@ void MediaPlayer::enable(bool on)
     if ( enabled_ != on ) {
 
         // option to automatically rewind each time the player is disabled
-        if (!on && rewind_on_disable_ )
+        if (!on && rewind_on_disable_ && desired_state_ == GST_STATE_PLAYING)
             rewind(true);
 
         // apply change
@@ -529,9 +529,8 @@ void MediaPlayer::enable(bool on)
         GstState requested_state = GST_STATE_PAUSED;
 
         // unpause only if enabled
-        if (enabled_) {
+        if (enabled_)
             requested_state = desired_state_;
-        }
 
         //  apply state change
         GstStateChangeReturn ret = gst_element_set_state (pipeline_, requested_state);

SessionSource.cpp

@@ -66,8 +66,17 @@ void SessionSource::setActive (bool on)
     Source::setActive(on);
 
     // change status of session (recursive change of internal sources)
-    if (session_)
+    if (session_) {
         session_->setActive(active_);
+
+        // change visibility of active surface (show preview of session when inactive)
+        if (activesurface_) {
+            if (active_)
+                activesurface_->setTextureIndex(Resource::getTextureTransparent());
+            else
+                activesurface_->setTextureIndex(session_->frame()->texture());
+        }
+    }
 }
 
 void SessionSource::update(float dt)
@@ -101,7 +110,6 @@ void SessionSource::replay ()
     }
 }
 
-
 SessionFileSource::SessionFileSource(uint64_t id) : SessionSource(id), path_(""), initialized_(false), wait_for_sources_(false)
 {
     // specific node for transition view

Source.cpp

@@ -268,7 +268,7 @@ Source::Source(uint64_t id) : SourceCore(), id_(id), ready_(false), symbol_(null
 
     // for drawing in mixing view
     mixingshader_ = new ImageShader;
-    mixingshader_->stipple = 1.0;
+    mixingshader_->stipple = 1.0f;
     mixinggroup_ = nullptr;
 
     // create media surface:
@@ -281,6 +281,7 @@ Source::Source(uint64_t id) : SourceCore(), id_(id), ready_(false), symbol_(null
     renderbuffer_   = nullptr;
     rendersurface_  = nullptr;
     mixingsurface_  = nullptr;
+    activesurface_  = nullptr;
     maskbuffer_     = nullptr;
     maskimage_      = nullptr;
     mask_need_update_ = false;
@@ -454,11 +455,11 @@ void Source::attach(FrameBuffer *renderbuffer)
     groups_[View::LAYER]->attach(mixingsurface_);
 
     // for views showing a scaled mixing surface, a dedicated transparent surface allows grabbing
-    Surface *surfacetmp = new Surface();
-    surfacetmp->setTextureIndex(Resource::getTextureTransparent());
-    groups_[View::TEXTURE]->attach(surfacetmp);
-    groups_[View::MIXING]->attach(surfacetmp);
-    groups_[View::LAYER]->attach(surfacetmp);
+    activesurface_ = new Surface();
+    activesurface_->setTextureIndex(Resource::getTextureTransparent());
+    groups_[View::TEXTURE]->attach(activesurface_);
+    groups_[View::MIXING]->attach(activesurface_);
+    groups_[View::LAYER]->attach(activesurface_);
 
     // Transition group node is optionnal
     if (groups_[View::TRANSITION]->numChildren() > 0)
@@ -866,8 +867,18 @@ void CloneSource::setActive (bool on)
     groups_[View::GEOMETRY]->visible_ = active_;
     groups_[View::LAYER]->visible_ = active_;
 
-    if ( mode_ > Source::UNINITIALIZED && origin_ != nullptr)
-        origin_->touch();
+    if (origin_) {
+        if ( mode_ > Source::UNINITIALIZED)
+            origin_->touch();
+
+        // change visibility of active surface (show preview of origin when inactive)
+        if (activesurface_) {
+            if (active_)
+                activesurface_->setTextureIndex(Resource::getTextureTransparent());
+            else
+                activesurface_->setTextureIndex(origin_->texture());
+        }
+    }
 }
 
 uint CloneSource::texture() const

Source.h

@@ -250,7 +250,11 @@ protected:
     // the rendersurface draws the renderbuffer in the scene
     // It is associated to the rendershader for mixing effects
     FrameBufferSurface *rendersurface_;
+
+    // for the mixer, we have a surface with stippling to show
+    // the rendering, and a preview of the original texture
     FrameBufferSurface *mixingsurface_;
+    Surface *activesurface_;
 
     // blendingshader provides mixing controls
     ImageShader *blendingshader_;

StreamSource.cpp

@@ -105,10 +105,19 @@ void StreamSource::setActive (bool on)
     // try to activate (may fail if source is cloned)
     Source::setActive(on);
 
-    // change status of stream (only if status changed)
-    if ( stream_ && active_ != was_active )
-        stream_->enable(active_);
+    if (stream_) {
+        // change status of stream (only if status changed)
+        if (active_ != was_active)
+            stream_->enable(active_);
 
+        // change visibility of active surface (show preview of stream when inactive)
+        if (activesurface_) {
+            if (active_)
+                activesurface_->setTextureIndex(Resource::getTextureTransparent());
+            else
+                activesurface_->setTextureIndex(stream_->texture());
+        }
+    }
 }
 
 

UserInterfaceManager.cpp

@@ -72,7 +72,7 @@ TextEditor editor;
 #define PLOT_ARRAY_SIZE 180
 #define LABEL_AUTO_MEDIA_PLAYER ICON_FA_CARET_SQUARE_RIGHT "  Dynamic selection"
 #define LABEL_STORE_SELECTION "  Store selection"
-#define LABEL_EDIT_FADING ICON_FA_RANDOM "  Edit Fading"
+#define LABEL_EDIT_FADING ICON_FA_RANDOM "  Edit timeline fading"
 
 // utility functions
 void ShowAboutGStreamer(bool* p_open);
@@ -2867,6 +2867,15 @@ void SourceController::RenderSingleSource(Source *s)
         ImGui::Text("%s %s", SourcePlayIcon(s), GstToolkit::time_to_string(s->playtime()).c_str() );
         ImGui::PopFont();
 
+//        if ( ms != nullptr ) {
+//            // ok, get the media player of the media source
+//            MediaPlayer *mp = ms->mediaplayer();
+//            const double width_ratio = static_cast<double>(rendersize.x) / static_cast<double>(mp->timeline()->sectionsDuration());
+
+//            DrawTimeline("##timeline_mediaplayers", mp->timeline(), mp->position(), width_ratio, 60);
+
+//        }
+
         ///
         /// Play button bar
         ///