GLMixer Code

BUG fix access to picture queue in video refresh timer upate
well, was a bit optimistic thinking that no bugs were left..

Youhou! Got it all ok in VideoFile new implementation.

Working implementation of seeking behavior
- compatible with paused video
- two consecutive seek phases : in parsing thread (in packets) first and
in decoding thread (in frames) afterwards

Work in Progress: re-implementation of seeking and marking behavior to
match the new implementaiton of time and speed in video file

Bug fix : close VideoFile now ends all the libav threads (in codec
processor).

Implementation of varying size picture queue : the number of frames in
the buffer between decoding thread and display loop is based on the size
of the file (e.g. 10% num frames total) and is adjusted depending on the
play speed (larger if playing faster to allow decoder to read faster
forward when speed is higher).

New implementation of VideoPicture and of the picture queue in
VideoFile:
Dynamic allocation of the queue to ensure the picture created is never
erazed or changed before it is dispayed.
This fix the long lasing bug with pictq and the read-write indices: the
VideoSource was displaing the frame AFTER (asynchronously) the pictq
read index was set, i.e sometimes too late and then jumping randomly in
the queue.

Tiny bug when no current source

AT LAST, a real bug fix on embeded plugin freeframe file management!

CORRECT Bug fix on embeded plugin freeframe file management ...