Commit graph

245 commits

Author SHA1 Message Date
Sebastian Dröge
57df188757 caps: Add gst_caps_is_subset_structure()
API: gst_caps_is_subset_structure()

This allows to check if a structure is a subset of given
caps without allocating a new caps instance for it.
2011-05-27 13:55:31 +02:00
Sebastian Dröge
da58834884 structure: Add gst_structure_is_subset()
API: gst_structure_is_subset()
2011-05-27 13:47:11 +02:00
Sebastian Dröge
d98e9acb0f caps: Optimize gst_caps_is_subset()
..and as a result gst_caps_is_equal() and others.

This now only checks if for every subset structure there is
a superset structure in the superset caps. Previously we were
subtracting one from another, creating completely new caps
and then even simplified them.

The new implemention now is about 1.27 times faster and doesn't
break the -base unit tests are anything anymore.
2011-05-27 13:38:51 +02:00
Sebastian Dröge
0cf2dfd0ba caps: Fix subset check in gst_caps_merge()
Caps A are a subset of caps B even if caps B doesn't
have all fields of caps A.

Also add a unit test for this.
2011-05-27 13:37:06 +02:00
Sebastian Dröge
d706ca0859 Revert "caps: Optimize gst_caps_is_subset()"
This reverts commit 32248a9b85.

This breaks some tests in -base and the failures should
be fixed first.
2011-05-27 12:56:43 +02:00
Sebastian Dröge
32248a9b85 caps: Optimize gst_caps_is_subset()
..and as a result gst_caps_is_equal() and others.

This now only checks if for every subset structure there is
a superset structure in the superset caps. Previously we were
subtracting one from another, creating completely new caps
and then even simplified them.

The new implemention now is about 1.27 times faster.
2011-05-27 12:45:59 +02:00
Tim-Philipp Müller
8a3721a1ca gst: we can now use GLib 2.24 API unconditionally 2011-05-25 16:02:10 +01:00
Sebastian Dröge
a08a17dfbd structure: Add gst_structure_intersect()
API: gst_structure_intersect()
2011-05-17 09:33:04 +02:00
Edward Hervey
64725facb5 gststructure: Add gst_structure_can_intersect API
Allows checking if two structures can intersect without having to
go through GstCaps

API: gst_structure_can_intersect

https://bugzilla.gnome.org/show_bug.cgi?id=629300
2011-05-17 09:28:06 +02:00
Edward Hervey
ae46eb3a38 gstructure: New API: gst_structure_is_equal
Allows checking equality of GstStructure without having to create
intermediary GstCaps.

API: gst_structure_is_equal

https://bugzilla.gnome.org/show_bug.cgi?id=629300
2011-05-17 09:28:00 +02:00
Sebastian Dröge
6e57ce32e5 caps: Merge structures when intersecting instead of appending them
This prevents adding duplicates over and over again to the resulting
caps if they already describe the new intersection result.

While this changes intersection from O(n*m) to O(n^2*m), it results in
smaller caps, which in the end will decrease further processing times.

For example in an audioconvert ! audioconvert ! audioconvert pipeline,
when forwarding the downstream caps preference in basetransform
(see e26da72de25a91c3eaad9f7c8b2f53ba888a0394) this results in
16 instead of 191 caps structures.
2011-05-14 11:39:34 +02:00
Edward Hervey
09d83e589a gstcaps: new API : gst_caps_intersect_full
Just like gst_caps_intersect, but adds a new parameter 'mode'
that allows selecting the intersection algorithm to use.

Currently we have GST_CAPS_INTERSECT_MODE_ZIG_ZAG (default) and
GST_CAPS_INTERSECT_MODE_FIRST.

API: gst_caps_intersect_full
API: GstCapsIntersectMode
API: GST_CAPS_INTERSECT_MODE_ZIG_ZAG
API: GST_CAPS_INTERSECT_MODE_FIRST

https://bugzilla.gnome.org/show_bug.cgi?id=617045
2011-03-24 11:14:18 -03:00
Stefan Kost
4d9e645551 caps,structure: trim trailing whitespace 2011-03-08 10:07:03 +02:00
Jonathan Matthew
2bbfa3304c caps: don't create broken caps for invalid media types
Check if structure has been created before appending it to the caps. Free the
caps in the case of an error to not conceal it be returning empty caps.

Fixes #642271
2011-03-08 10:06:12 +02:00
Tim-Philipp Müller
8a7fc1d8c9 Revert "micro-optim: if (x) is cheaper than if (x > 0) for unsigned integers"
This reverts commit 6aa8ca37ee.

See http://article.gmane.org/gmane.comp.video.gstreamer.devel/32282
2010-12-26 21:21:43 +00:00
Tim-Philipp Müller
3256c708be docs: gst: more gobject introspection annotations
Many of these are superfluous, added for clarity.
2010-12-07 18:37:04 +00:00
Mark Nauwelaerts
efe3c70450 caps: fix doc typo 2010-12-03 13:35:38 +01:00
Edward Hervey
6aa8ca37ee micro-optim: if (x) is cheaper than if (x > 0) for unsigned integers 2010-12-03 12:03:42 +01:00
Wim Taymans
d36903c1c2 caps: improve some comments about the zigzag intersection 2010-12-02 19:10:44 +01:00
Stefan Kost
8ef7e46d24 docs: fix warnings pointed out by gtk-doc 2010-09-13 11:18:25 +03:00
Tim-Philipp Müller
bf2bdba6b3 caps: simplify code a bit
No need to call g_slist_length() here.
2010-09-08 18:51:09 +01:00
Edward Hervey
70d1f1f177 gstcaps: Make sure _normalize() is applied on all structures.
We need to use gst_caps_get_size() in the loop counter since some
structures could be added while iterating.

Fixes #623301
2010-07-01 18:17:40 +02:00
Tim-Philipp Müller
71f3a6f0f7 Don't include <libxml/parser.h> from public headers if GST_DISABLE_DEPRECATED is defined
Since everything GstXML related has been deprecated, we can now skip the
libxml includes from the public headers when GST_DISABLE_DEPRECATED is
defined.

See #463435.
2010-06-26 10:35:38 +01:00
Sebastian Dröge
5f4a965f67 gstxml: Deprecate GstXml and related functions
Pipeline serialisation to and from XML is horribly broken for all
but the most simple use cases, and will likely never be fixed.
Make sure everyone playing around with these tools is aware of
this, to avoid frustration. See countless bug reports in bugzilla.

Fixes bug #622685.
2010-06-25 18:25:40 +02:00
Tim-Philipp Müller
6edfcc3705 docs: add Since: tag for new gst_caps_steal_structure 2010-06-14 12:28:57 +01:00
Edward Hervey
32adac81ee gstcaps: New gst_caps_steal_structure() method
This allows removing structures from caps without them being freed. Helpful when
plugins need to move around structures without having to do an expensive structure
copy.

API:gst_caps_steal_structure

https://bugzilla.gnome.org/show_bug.cgi?id=621527
2010-06-14 13:16:18 +02:00
Stefan Kost
2d2ec4e3d5 caps: use gst_caps_append_structure_unchecked() macro once more 2010-06-08 12:19:49 +03:00
Stefan Kost
c5f85a1cda caps: use a safer name for temporary var. to not shadow one from outer scope 2010-06-08 12:19:22 +03:00
Tim-Philipp Müller
66fc4c8ba2 info: add new TRACE log level and move refcounting there from LOG level
This makes it possible to easily get a *:5 debug log without all
the refcounting noise, and drastically reduces the number of lines
output for a normal log (46m to 28m for a 20min video). The full log
including refcounting information can still be gotten using *:7.

Fixes #620460.
2010-06-05 12:53:15 +01:00
Stefan Kost
ccaadae492 caps: use our macros more often in the code 2010-05-22 23:26:16 +03:00
Stefan Kost
bd7a34bfa1 caps: add append_structure_unchecked
This is useful when we know that caps is !NULL, writable and structure is
!NULL too.
2010-05-22 23:14:48 +03:00
Stefan Kost
999a6235c0 caps: use our macos more 2010-05-22 22:44:02 +03:00
Stefan Kost
e8c2c40b21 caps: comment and whitespace cleanup
Make comment more specific, reposition it and add more of the kind.
Move one ifdef'ed function around.
2010-05-14 11:54:56 +03:00
Tim-Philipp Müller
235910e227 gst: use #if GLIB_CHECK_VERSION instead of #ifndef GLIBMACRO
for better greppability at the time we bump GLib version requirements.
2010-03-17 11:03:15 +00:00
Stefan Kost
1ca450ba5c caps: move the check to the public api.
This avoids creating empty caps and destroying them in the case of an error. We
also avoid double checking in other code path where we call the internal api.
2010-03-15 11:17:22 +02:00
Stefan Kost
43a4763491 caps: this is internal API where we need to ensure !NULL higher up 2010-03-15 11:17:22 +02:00
Edward Hervey
bbe26d36ba gst: Use G_VALUE_COLLECT_INIT if available
This brings total call speedups between 5% and 25%.
gst_caps_set_simple_valist: +5%
gst_structure_set_valist: + 10%
gst_structure_id_set_valist: +25%
gst_tag_list_add_valist: +5%

Measured using valgrind when run over the discovery of 200 media files.

Fixes #610256
2010-03-12 10:01:47 +01:00
Stefan Kost
23da3639f0 docs: fix xrefs in docs
Fix typos in xrefs, links to non existing functions and rework plural forms.
2009-11-25 16:59:50 +02:00
Edward Hervey
e5a13bd3fc gstcaps: Use inlined version of _is_any()/_is_empty()
CAPS_IS_ANY and CAPS_IS_EMPTY are the equivalent of their gst_caps_*
counterpart except that they avoid the typechecking and are inlined.

CAPS_IS_EMPTY_SIMPLE only checks for empty caps (without checking if
the caps is ANY).
2009-10-23 17:47:43 +02:00
Benjamin Otte
868711fc70 docs: Fix docs for gst_caps_set_simple() 2009-10-20 10:51:25 +01:00
Jan Schmidt
08c56edb84 docs: Modify docs string slightly.
Apparently starting the last line of a docs string with 'returns' both
confuses and enrages gtk-doc. Use a slightly different wording instead.
2009-10-19 13:02:30 +01:00
Wim Taymans
7d86ad93a2 caps: fix typo in docs 2009-10-16 12:39:54 +02:00
Benjamin Otte
0ff4086507 Improve caps setters API
This patch adds gst_caps_set_value() and allows gst_caps_set_simple() to
work on non-simple caps. See the API documentation for the functions
about what they do.

The intention of these changes is to ease working with caps in caps
transform functions. An example for this would be ffmpegcolorspace,
where the caps transform function could be changed to look roughly like
this (pseudocode ahead):
  result = gst_caps_copy (template_caps);
  value = gst_structure_get_value (gst_caps_get_structure (caps, 0),
    "widh");
  gst_caps_set_value (result, value);
  /* same for height, framerate and par */
  return caps;
which is much cleaner and easier to understand than the current code.

https://bugzilla.gnome.org/show_bug.cgi?id=597690
2009-10-15 19:10:50 +02:00
Tim-Philipp Müller
459c2b9c79 docs: fix Since: tag for new gst_caps_can_intersect() function 2009-08-06 14:11:46 +01:00
Stefan Kost
568202cb47 caps: add gst_caps_can_intersect()
Often we don't need the result of the intersection. Add a variant that only
tries to intersect. It can break out earlier and does less GValue copying.
API: gst_caps_can_intersect()
2009-08-06 15:30:33 +03:00
Stefan Kost
baaf7e5319 caps: split callback for structure intersect into two functions
We call this separately. there is no much benefit in reusing the callback.
Splitting is let us remove a branch also.
2009-08-06 15:30:33 +03:00
Stefan Kost
f5314ecae1 logging: log if we copy caps to be able to track it 2009-08-06 15:30:33 +03:00
Stefan Kost
24517c8975 caps: add comments about g_ptr_array size behaviour
Just explain the behaviour to avoid that someone else is wasting time trying to
improve this too.
2009-08-06 15:30:33 +03:00
Wim Taymans
950c70c8bb caps: add some more debugging in _replace 2009-08-06 10:52:12 +02:00
Edward Hervey
3c21f2d86c Spread branch prediction macros.
These are based on profiling several playback scenarios using playbin2.
2009-06-30 16:29:58 +02:00