Commit graph

2 commits

Author SHA1 Message Date
Lubosz Sarnecki
b4a4999bb2 glcompositionoverlay: Add compatibility for GL contexts without glGenVertexArrays
https://bugzilla.gnome.org/show_bug.cgi?id=745107
2015-07-20 14:41:11 -04:00
Lubosz Sarnecki
7c7f84c603 glcompositionoverlay: Add class for managing GstVideoOverlayCompositionOverlay buffers
Add a class to store and manage the OpenGL texture,
vertex buffer and GstVideoOverlayRectangle.
Transforms overlay coordinate space to vertex buffer space with aspect ratios in mind.

= Example Pipelines =

Simple pipeline

gst-launch-1.0 videotestsrc ! \
  textoverlay text="Hello World" font-desc="sans bold 30" ! \
  glimagesink

Display 3 static overlays at different positions

gst-launch-1.0 videotestsrc ! \
  textoverlay text="text1" valignment="top" font-desc="sans bold 30" ! \
  textoverlay text="text2" halignment="right" font-desc="sans bold 30" ! \
  textoverlay text="text3" halignment="left" font-desc="sans bold 30" ! \
  glimagesink

Display subtitle file over testsrc

gst-launch-1.0 videotestsrc ! \
  textoverlay name=foo filesrc location=foo.srt ! subparse ! queue ! foo. foo. ! \
  glimagesink

https://bugzilla.gnome.org/show_bug.cgi?id=745107
2015-07-20 14:41:11 -04:00