gstreamer/docs/random/thomasvs/registry

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Reviewing the registry (thomasvs, April 8 2002)
* added a --gst-registry flag to the core which allows any gst app
to specify a different registry for loading/saving
some stuff to do this went into gstreamer/gst/gstregistry.h
* What location is used for writing ? (gst-register)
- if specified (using --gst-registry) then use the specified location
- if not specified :
- it can be written in the global location, do it there
(which should be sysconfdir/gstreamer) and reg.xml
- if not writable, then try ~/.gstreamer/reg.xml
* What location is used for reading ? (gst-whatever)
- if specified (using --gst-registry) then use the specified location
- if not specified :
- right now :
if local exists, only read local
if not, read global
- TODO: try reading GST_CONFIG_DIR/reg.xml first
then try reading ~/.gstreamer/reg.xml
AND replace every namespace collision with the new one
* actual variables stuff (gstregistry.c)
- use gst_registry_write_get to get a GstRegistryWrite struct back
listing the right location of dir, file and tmp file
- use gst_registry_read_get to get a GstRegistryRead struct back
listing the path of global and local file to read
* gst-register signals it's going to write to the registry (causing it to
be unlinked before the read in post_init ()) by setting a global variable,
_gst_init_write_registry