Summarize some ideas in TODO

1 files changed, 42 insertions, 0 deletions

diff --git a/TODO b/TODO
new file mode 100644
index 0000000..5417cb4
--- /dev/null
+++ b/TODO
@@ -0,0 +1,42 @@
+GSTREAMER SIDE:
+ - find a way to dynamically link the pipeline to not stop playing
+   while switching from the effect little preview to full size video
+   output.
+ - this can't obviously be done with multiple pipelines since the
+   webcam device is locked.
+
+ IDEA: source (full size) --> tee1
+                    ___________|_____
+                   /                 \
+        filter-1 --> bigsink-1      tee2 --> videoscale (downscale)
+        filter-2 (unlinked?)                     |
+         ...                                 videorate (downrate)
+        filter-n (unlinked?)                     |
+                                                 +--> filter-1 --> sink-1
+                                                 +--> filter-2 --> sink-2
+                                                  ...
+                                                 +--> filter-n --> sink-n
+
+sink-0 is the output window of the full size image.
+sink-1..n are the output windows of the effects previews scaled down to
+optimize cpu/gpu usage in the effect selector
+Outstanding issues: 
+- we need a way to selectively pause (unlikely viable) or dinamically
+  link-unlink tee branches never stopping the source (the webcam is slow
+  to startup and it would be quite ugly in the whole user experience).
+- do we need to prelink all the bins at both reduced and full size?
+- part-block.txt could probably a useful read:
+  http://cgit.freedesktop.org/gstreamer/gstreamer/tree/docs/design/part-block.txt
+
+CLUTTER SIDE:
+ - a custom container or layout manager for the effect
+   selector. Should be able to handle stage resizing.
+ - come up with a nice way to organize several effects: if we have 20
+   different effects I suppose there is a little overhead with having
+   all displayed and running at the same time. Possibile solution: a
+   multipage grid based selector; again, what should we do with effect
+   previews not currently displayed, pause them (unlikely)? unlink
+   them (to investigate)?
+ - find or create from scratch a throbber actor to draw while
+   pipelines are loading.
+