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docs/design/part-states.txt: Fix device open/close docs.

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Original commit message from CVS:
* docs/design/part-states.txt:
Fix device open/close docs.
This commit is contained in:
Wim Taymans 2008-06-25 14:49:08 +00:00
parent 6e6de5162b
commit f99119cff6
2 changed files with 9 additions and 2 deletions
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5
ChangeLog
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@ -1,3 +1,8 @@
2008-06-25 Wim Taymans <wim.taymans@collabora.co.uk>
* docs/design/part-states.txt:
Fix device open/close docs.
2008-06-25 Stefan Kost <ensonic@users.sf.net>
* ChangeLog:

6
docs/design/part-states.txt
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@ -32,9 +32,10 @@ the following state changes are possible:
- The element must check if the resources it needs are available.
Device sinks and -sources typically try to probe the device to constain
their caps.
- The element opens the device, this is needed if the previous step requires
the device to be opened.
READY -> PAUSED
- The element opens the device and prepares itself for PLAYING.
- the element pads are activated in order to receive data in PAUSED.
Streaming threads are started.
- some elements might need to return ASYNC and complete the state change
@ -76,12 +77,13 @@ the following state changes are possible:
PAUSED -> READY
- sinks unblock any waits in the preroll.
- elements unblock any waits on devices
- elements close devices
- chain or get_range functions return WRONG_STATE.
- the element pads are deactivated so that streaming becomes impossible and
all streaming threads are stopped.
- the sink forgets all negotiated formats
READY -> NULL
- elements close devices
- element removes any dynamically created pads