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docs: update design doc

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also fix default alignment value (0 == no-alignment)
This commit is contained in:
Wim Taymans 2011-11-18 18:08:21 +01:00
parent 770159fb1c
commit 9e3aa102d7
2 changed files with 17 additions and 10 deletions
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25
docs/design/part-scheduling.txt
View file

@ -60,18 +60,25 @@ A sinkpad can ask the upstream srcpad for its scheduling attributes. It does
this with the SCHEDULING query.
(out) "pull-mode", G_TYPE_BOOLEAN (default FALSE)
- if the pad can operate in pull mode, if this flag is not set the pad
will operate in push mode.
(out) "modes", G_TYPE_VALUE_ARRAY (default NULL)
- an array of GST_TYPE_PAD_MODE enums. Contains all the supported
scheduling modes.
(out) "random-access", G_TYPE_BOOLEAN (default FALSE)
(out) "flags", GST_TYPE_SCHEDULING_FLAGS (default 0)
typedef enum {
GST_SCHEDULING_FLAG_SEEKABLE = (1 << 0),
GST_SCHEDULING_FLAG_SEQUENTIAL = (1 << 1)
} GstSchedulingFlags;
_SEEKABLE:
- the offset of a pull operation can be specified, if this flag is false,
the offset should be -1,
(out) "sequential", G_TYPE_BOOLEAN (default TRUE)
- suggest sequential access to the data. If random-access is specified,
_SEQUENTIAL:
- suggest sequential access to the data. If _SEEKABLE is specified,
seeks are allowed but should be avoided. This is common for network
streams. (
streams.
(out) "minsize", G_TYPE_INT (default 1)
- the suggested minimum size of pull requests
@ -79,7 +86,7 @@ this with the SCHEDULING query.
(out) "maxsize", G_TYPE_INT (default -1, unlimited)
- the suggested maximum size of pull requests
(out) "align", G_TYPE_INT (default 1)
(out) "align", G_TYPE_INT (default 0)
- the suggested alignment for the pull requests.

2
gst/gstquery.c
View file

@ -1885,7 +1885,7 @@ gst_query_new_scheduling (void)
GST_QUARK (FLAGS), GST_TYPE_SCHEDULING_FLAGS, 0,
GST_QUARK (MINSIZE), G_TYPE_INT, 1,
GST_QUARK (MAXSIZE), G_TYPE_INT, -1,
GST_QUARK (ALIGN), G_TYPE_INT, 1, NULL);
GST_QUARK (ALIGN), G_TYPE_INT, 0, NULL);
query = gst_query_new (GST_QUERY_SCHEDULING, structure);
return query;