Fixes:
Terminating app due to uncaught exception 'NSInvalidArgumentException', reason: '*** +[NSString stringWithUTF8String:]: NULL cString
in the state change test.
This commit introduces IOSGLMemory which is a GLMemory that falls back to
GstAppleCoreVideoMemory for CPU access. This is a temporary solution until
IOSurface gets exposed as a public framework on iOS and so we can use
IOSurfaceMemory on both MacOS and iOS.
https://bugzilla.gnome.org/show_bug.cgi?id=769210
The URI must already be escaped by the caller, we don't support passing around
invalid (unescaped) URIs via the GstURIHandler interface.
Also it will escape too much of the URI in this case, e.g.
ipod-library://item/item.m4a?id=3143338395173862951
becomes
ipod-library://item/item.m4a%3Fid%3D3143338395173862951
https://bugzilla.gnome.org/show_bug.cgi?id=767492
rename gst-launch --> gst-launch-1.0
replace old elements with new elements(ffmpegcolorspace -> videoconvert, ffenc_** -> avenc_**)
fix caps in examples
https://bugzilla.gnome.org/show_bug.cgi?id=759432
When doing texture sharing we don't need to call CVPixelBufferLockBaseAddress to
map the buffer in CPU. This cuts about 10% relative cpu time from a vtdec !
glimagesink pipeline.
