Commit graph

379 commits

Author SHA1 Message Date
Sebastian Dröge
6fa351407a miniobject: Add parent pointers to the miniobject to influence writability
Every container of miniobjects now needs to store itself as parent in
the child object, and remove itself again at a later time.

A miniobject is only writable if there is at most one parent, and that
parent is writable itself, and if the reference count of the miniobject
is 1.

GstBuffer (for memories), GstBufferList (for buffers) and GstSample (for
caps, buffer, bufferlist) was updated accordingly.

Without this it was possible to have e.g. a bufferlist with refcount 2
in two places, modifying the same buffer with refcount 1 at the same
time.

https://bugzilla.gnome.org/show_bug.cgi?id=796692
2018-07-09 09:45:45 +02:00
Tim-Philipp Müller
0691278377 buffer: don't over-allocate internal GstMeta items
We would allocate space for two GstMeta structs even though
there is only one in the end (the one in GstMetaItem and in
GstFooMeta overlap).
2018-04-25 18:28:00 +01:00
Mark Nauwelaerts
ea0f8ebce1 gst: add some GIR array annotations 2018-04-13 20:16:33 +02:00
Mark Nauwelaerts
9fb56a32f5 gst: fix some GIR annotations
Mostly related to out parameters and their transfer
2018-02-18 12:16:36 +01:00
Tim-Philipp Müller
cd10f14726 buffer: add gst_buffer_get_n_meta() convenience function
Counts how many metas there are for a certain api type.

https://bugzilla.gnome.org/show_bug.cgi?id=791918
2018-01-27 11:18:19 +00:00
Arun Raghavan
b5028383ab gst: Fix up a bunch of GIR annotations
This is mostly on nullable return values, and some other minor ones that
I ran across.

https://bugzilla.gnome.org/show_bug.cgi?id=789319
2018-01-27 10:41:24 +00:00
Tim-Philipp Müller
bcc5e5bcd5 buffer: document that _extract_dup() will return NULL for 0-sized buf
And make it explicit, and don't call _extract() on NULL data buffer.
2017-12-05 15:18:29 +00:00
Mathieu Duponchelle
e838007d09 gstbuffer: fix meta removal in gst_buffer_foreach_meta
When updating the linked list, prev->next = next is correct
if prev is actually updated after being set to the head
of the list at the start.

https://bugzilla.gnome.org/show_bug.cgi?id=788617
2017-10-11 19:57:04 +02:00
Sebastian Dröge
7d930b8693 buffer: Add GstReferenceTimestampMeta
This is a meta that generically allows to attach additional reference
timestamps to a buffer, that don't have to relate to the pipeline clock
in any way.

Examples of this could be an NTP timestamp when the media was captured,
a frame counter on the capture side or the (local) UNIX timestamp when
the media was captured.

https://bugzilla.gnome.org/show_bug.cgi?id=779213
2017-05-12 11:43:02 +02:00
Thibault Saunier
a87b4551a6 Port gtk-doc comments to their equivalent markdown syntax
Modernizing our documentation and preparing a possible move to hotdoc.
This commits also adds missing @title metadatas to all SECTIONs
2017-01-27 16:36:38 -03:00
Tim-Philipp Müller
ca4ac71555 buffer: add gst_buffer_iterate_meta_filtered()
For convenience. Pretty much every user of
gst_buffer_iterate_meta() filters for a specific
api type.

https://bugzilla.gnome.org/show_bug.cgi?id=775727
2016-12-14 18:18:43 +00:00
Tim-Philipp Müller
de65b88d13 buffer: mark gst_buffer_iterate_meta() as 'skip' for bindings
The pointer state arg won't work well, bindings can use
the foreach function instead.

https://bugzilla.gnome.org/show_bug.cgi?id=775727
2016-12-14 15:23:41 +00:00
Scott D Phillips
075744a894 Cast away const from GstMetaInfo in *_get_meta_info() functions
MSVC warns about the const in the implicit argument conversion in the
calls to g_once_init_{enter,leave}. It's OK so explicitly cast it.

https://bugzilla.gnome.org/show_bug.cgi?id=774293
2016-11-15 14:51:18 +02:00
Arjen Veenhuizen
cf6cac07dd buffer: add explicit getters and setters for buffer flags
These can be used from bindings.

https://bugzilla.gnome.org/show_bug.cgi?id=768301
2016-08-22 18:59:06 +01:00
Tim-Philipp Müller
12a1418f7f Fix some nonsensical g-i annotations 2016-04-30 14:15:08 +01:00
Sebastian Dröge
3f3af84a8f meta: Warn if a meta implementation is registered without init function
This previously caused uninitialized memory unless something else was
initializing all the fields explicitly to something.

To be on the safe side, we also allocate metas without init function to all
zeroes now as it was relatively common.

https://bugzilla.gnome.org/show_bug.cgi?id=764902
2016-04-13 10:21:15 +03:00
Edward Hervey
f7cba27157 buffer: Check return value of gst_memory_map()
Only do memory operations if the memory was succesfully map'ed

https://bugzilla.gnome.org/show_bug.cgi?id=728326
2016-02-23 17:23:43 +01:00
Sebastian Dröge
5664fd7635 buffer: Protect against failing to map input memory when merging memories
https://bugzilla.gnome.org/show_bug.cgi?id=762239
2016-02-18 11:09:36 +02:00
Evan Nemerson
d11e657412 docs: annotate C examples as such
https://bugzilla.gnome.org/show_bug.cgi?id=731292
2016-02-15 17:45:15 +00:00
Jan Schmidt
cde3524f52 buffer: Fix the name of the parentbuffermeta debug category.
Don't use 'glbufferrefmeta' as the debug category for the
parent buffer meta.
2015-08-04 20:09:47 +10:00
Jan Schmidt
fa370153bc buffer: Remove extra debug symbol from exports
Don't export the debug variable for the parent_buffer_meta.

This was accidentally exported and shouldn't be public
2015-08-04 20:02:00 +10:00
Tim-Philipp Müller
0a50d1be52 docs: fix description of gst_buffer_extract_dup()
No GBytes involved.
2015-07-22 15:38:06 +01:00
Hyunjun Ko
eaf4153668 meta: transform_func: return FALSE if not supported or failed
https://bugzilla.gnome.org/show_bug.cgi?id=751778
2015-07-07 13:40:17 +03:00
Sebastian Dröge
0aae36567d buffer: Don't copy "memory" metas unconditionally
Don't copy memory metas if we only copied part of the buffer, didn't
copy memories or merged memories. In all these cases the memory
structure has changed and the memory meta becomes meaningless.

https://bugzilla.gnome.org/show_bug.cgi?id=751712
2015-07-01 10:37:37 +02:00
Sebastian Dröge
d43f256a9e Revert "buffer: Don't copy POOLED and memory metadata unconditionally"
This reverts commit 7a08fa5ec4.
2015-07-01 10:37:35 +02:00
Sebastian Dröge
7a08fa5ec4 buffer: Don't copy POOLED and memory metadata unconditionally
https://bugzilla.gnome.org/show_bug.cgi?id=751712
2015-06-30 18:40:28 +02:00
Nicolas Dufresne
ddedc412f5 doc: Unify Since mark for attribute and enum
As this show up as prose in the doc, simply make it consistent
and "arguable" nicer to read.
2015-06-18 11:51:48 -04:00
Jan Schmidt
4d4e436376 Add GstParentBufferMeta
A core meta which helps implement the old concept
of sub-buffering in some situations, by making it
possible for a buffer to keep a ref on a different
parent buffer. The parent buffer is unreffed when
the Meta is freed.

This meta is used to ensure that a buffer whose
memory is being shared to a child buffer isn't freed
and returned to a buffer pool until the memory
is.

https://bugzilla.gnome.org/show_bug.cgi?id=750039
2015-06-19 01:15:25 +10:00
Nicolas Dufresne
bd9ea8d18f doc: Fix Since: marks
There was few Since: mark missing their column. Also unify the way
we set the Since mark on enum value and structure members. These
sadly don't show up in the index.
2015-06-13 20:19:59 -04:00
Nicolas Dufresne
b3f42b0c35 doc: Add gst_buffer_copy_deep() 2015-06-13 20:02:18 -04:00
Matthew Waters
eb71ee4040 buffer: locking memory exclusively may fail
Attempt to return a copy of the memory instead.

https://bugzilla.gnome.org/show_bug.cgi?id=750172
2015-06-03 20:41:44 +10:00
Jan Schmidt
b0c072711d gstbuffer: Add a note about metas needing to be copied last 2015-06-03 00:48:17 +10:00
Sebastian Dröge
a5ab02733a buffer: Check return value of meta transform function in gst_buffer_copy_into()
... by printing some debug output whenever copying a GstMeta fails.

https://bugzilla.gnome.org/show_bug.cgi?id=748119
2015-04-20 09:23:43 +02:00
Sebastian Dröge
21da311743 buffer: Use the correct enum type to fix a compiler warning
gstbuffer.c:522:58: error: implicit conversion from enumeration type 'GstBufferFlags' to
      different enumeration type 'GstBufferCopyFlags' [-Werror,-Wenum-conversion]
  if (!gst_buffer_copy_into (copy, (GstBuffer *) buffer, flags, 0, -1))
       ~~~~~~~~~~~~~~~~~~~~                              ^~~~~
gstbuffer.c:534:46: error: implicit conversion from enumeration type 'GstBufferCopyFlags' to
      different enumeration type 'GstBufferFlags' [-Werror,-Wenum-conversion]
  return gst_buffer_copy_with_flags (buffer, GST_BUFFER_COPY_ALL);
         ~~~~~~~~~~~~~~~~~~~~~~~~~~          ^~~~~~~~~~~~~~~~~~~
./gstbuffer.h:433:31: note: expanded from macro 'GST_BUFFER_COPY_ALL'
  ...((GstBufferCopyFlags)(GST_BUFFER_COPY_METADATA | GST_BUFFER_COPY_MEMORY))
      ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
2015-03-14 13:37:09 +00:00
Thiago Santos
96eaeadc0f gstbuffer: add gst_buffer_copy_deep
A variant of gst_buffer_copy that forces the underlying memory
to be copied.

This is added to avoid adding an extra reference to a GstMemory
that might belong to a bufferpool that is trying to be drained.
The use case is when the buffer copying is done to release the
old buffer and all its resources.

https://bugzilla.gnome.org/show_bug.cgi?id=745287
2015-03-13 18:37:04 +00:00
Sebastian Dröge
6e47237e66 buffer: Document that gst_buffer_copy_region() accepts -1 as size to copy until the end
It's just a wrapper around gst_buffer_copy_into() after all.
2015-01-29 12:10:49 +01:00
William Manley
e9e620cd37 docs: Fix GstBuffer typo "memory bock" -> "memory block"
https://bugzilla.gnome.org/show_bug.cgi?id=737117
2014-09-23 19:31:21 +03:00
William Manley
f6b053d375 docs: Improve gst_buffer_get_meta() to clear up confusion
I was confused by the existence of `gst_buffer_get_meta` as it suggested
to me that you should only attach one of any type of GstMeta to a buffer.
It's perfectly fine to attach multiple from a single API so I'm
documenting that here.

https://bugzilla.gnome.org/show_bug.cgi?id=737129
2014-09-23 19:30:15 +03:00
Arnaud Vrac
f0deb37a86 buffer: do not touch memory tag flag when copying buffer flags
The tag memory flag will be set later if the memory is also copied. This
patch avoids buffers being freed needlessly in bufferpools.

https://bugzilla.gnome.org/show_bug.cgi?id=735574
2014-08-28 12:20:12 +03:00
Evan Nemerson
5d80cf12ba introspection: add nullability annotations to out and inout params
https://bugzilla.gnome.org/show_bug.cgi?id=730957
2014-06-26 18:59:15 +02:00
Evan Nemerson
2759882379 introspection: add missing (nullable) annotations to return values
Support for (nullable) was added to G-I at the same time as nullable
return values.  Previous versions of G-I will not mark return values as
nullable, even when an (allow-none) annotation is present, so it is
not necessary to add (allow-none) annotations for compatibility with
older versions of G-I.

https://bugzilla.gnome.org/show_bug.cgi?id=730957
2014-06-26 18:56:38 +02:00
Evan Nemerson
e10266e3f3 docs: convert NULL, TRUE, and FALSE to %NULL, %TRUE, and %FALSE
This should help improve documentation generated for
languages other than C.

https://bugzilla.gnome.org/show_bug.cgi?id=730961
2014-05-30 00:20:27 +01:00
Tim-Philipp Müller
6eb6d9ec38 docs: remove outdated and pointless 'Last reviewed' lines from docs
They are very confusing for people, and more often than not
also just not very accurate. Seeing 'last reviewed: 2005' in
your docs is not very confidence-inspiring. Let's just remove
those comments.
2014-04-26 21:21:51 +01:00
Nicolas Dufresne
ec69ad4e8a buffer: Only set TAG_MEMORY if the memory has been replaced
Currently we set TAG_MEMORY as soon a resize changes the size of one
of the memory. This has the side effect that buffer pool cannot know if
the memory have simply been resized, or if the memorys has been replaced.
This make it hard to actually implement _reset(). Instead, only set the
TAG_MEMORY if one or more memory has been replaced, and do a light
sanity check of the size.

https://bugzilla.gnome.org/show_bug.cgi?id=727109
2014-04-26 15:03:04 -04:00
Sebastian Dröge
81f9a22228 memory/buffer: Initialise GstMapInfo to zeroes if mapping fails
This should allow for more meaningful errors. Dereferencing NULL
is more useful information than dereferencing a random address
happened to be on the stack.
2014-04-16 19:49:56 +02:00
Edward Hervey
c7295cf4b9 gstbuffer: Fix range iteration
We want to iterate over items idx to idx + length

We use the len variable as the corrected number of memory to iterate
and then properly go over all items.

Fixes the issue where specifying any idx different from 0 had no effect

Spotted by clang static analyzer
2014-04-11 13:45:21 +02:00
Wim Taymans
ee348fe7cb buffer: don't clear TAG on NULL buffer
When the buffer fails to copy, don't clear the TAG on the NULL pointer.
2014-03-24 16:11:30 +01:00
Tim-Philipp Müller
313f01ab79 buffer: invert meaning of GST_BUFFER_FLAG_TAG_MEMORY
It's nicer to only have it set when something noteworthy
happened and otherwise unset.

https://bugzilla.gnome.org/show_bug.cgi?id=725862
2014-03-07 20:43:44 +00:00
Stefan Sauer
cbfafd212b buffer: add return values to g_return_if_fail
FIxes previous commit.
2014-02-27 18:28:15 +01:00
Stefan Sauer
c068b225fe docs: convert the examples to use gtk-doc markup, instead of docbook
The gtk-doc markup is less intrusive and better handled when creating docs for
language bindings. The titles (where used) where not adding much.
2014-02-27 18:11:35 +01:00