Commit graph

252 commits

Author SHA1 Message Date
Tim-Philipp Müller
dc29bc4e13 libs: fix API export/import and 'inconsistent linkage' on MSVC
For each lib we build export its own API in headers when we're
building it, otherwise import the API from the headers.

This fixes linker warnings on Windows when building with MSVC.

The problem was that we had defined all GST_*_API decorators
unconditionally to GST_EXPORT. This was intentional and only
supposed to be temporary, but caused linker warnings because
we tell the linker that we want to export all symbols even
those from externall DLLs, and when the linker notices that
they were in external DLLS and not present locally it warns.

What we need to do when building each library is: export
the library's own symbols and import all other symbols. To
this end we define e.g. BUILDING_GST_FOO and then we define
the GST_FOO_API decorator either to export or to import
symbols depending on whether BUILDING_GST_FOO is set or not.
That way external users of each library API automatically
get the import.

While we're at it, add new GST_API_EXPORT in config.h and use
that for GST_*_API decorators instead of GST_EXPORT.

The right export define depends on the toolchain and whether
we're using -fvisibility=hidden or not, so it's better to set it
to the right thing directly than hard-coding a compiler whitelist
in the public header.

We put the export define into config.h instead of passing it via the
command line to the compiler because it might contain spaces and brackets
and in the autotools scenario we'd have to pass that through multiple
layers of plumbing and Makefile/shell escaping and we're just not going
to be *that* lucky.

The export define is only used if we're compiling our lib, not by external
users of the lib headers, so it's not a problem to put it into config.h

Also, this means all .c files of libs need to include config.h
to get the export marker defined, so fix up a few that didn't
include config.h.

This commit depends on a common submodule commit that makes gst-glib-gen.mak
add an #include "config.h" to generated enum/marshal .c files for the
autotools build.

https://bugzilla.gnome.org/show_bug.cgi?id=797185
2018-09-24 08:45:34 +01:00
Nirbheek Chauhan
a9cab426d0 meson: Maintain macOS ABI through dylib versioning
Requires Meson 0.48, but the feature will be ignored on older versions
so it's safe to add it without bumping the requirement.

Documentation:
https://github.com/mesonbuild/meson/blob/master/docs/markdown/Reference-manual.md#shared_library
2018-08-31 14:40:43 +05:30
Bastian Köcher
efa9bdccf9 meson: fix install dir for generated header files
Nixos installs into a non-standard includedir, so need
to take account of the 'includedir' option instead of
just hard-coding 'include' here.

https://bugzilla.gnome.org/show_bug.cgi?id=794856
2018-08-10 12:43:38 +01:00
Tim-Philipp Müller
7b98593280 app: Update for g_type_class_add_private() deprecation in recent GLib
https://gitlab.gnome.org/GNOME/glib/merge_requests/7
2018-06-23 21:33:16 +02:00
Tim-Philipp Müller
9158f9f7eb docs: Fix typos 2018-05-22 14:10:03 +01:00
Antoine Jacoutot
c765649505 libs: g-ir-scanner: do not hardcode libtool path
https://bugzilla.gnome.org/show_bug.cgi?id=726571
2018-05-18 13:41:25 +02:00
Sebastian Dröge
dbd9ff1cf5 appsink: Handle unlock in drain query handling too
And also handle flushing, we might otherwise wait here forever when
flushing too.
2018-05-02 19:14:16 +03:00
Sebastian Dröge
9f9000e693 appsink: Make sure to also handle unlock when waiting for EOS to be handled
Otherwise shutting down during EOS waiting will cause a deadlock.

https://bugzilla.gnome.org/show_bug.cgi?id=795551
2018-05-02 19:14:16 +03:00
Sebastian Dröge
a19497ab67 appsrc/sink: Fix optimization for only signalling waiters if someone is actually waiting
It is possible that both application and the stream are waiting
currently, if for example the following happens:
  1) app is waiting because no buffer in appsink
  2) appsink providing a buffer and waking up app
  3) appsink getting another buffer and waiting because it's full now
  4) app thread getting back control

Previously step 4 would overwrite that the appsink is currently waiting,
so it would never be signalled again.

https://bugzilla.gnome.org/show_bug.cgi?id=795551
2018-05-02 18:11:58 +03:00
Mathieu Duponchelle
d00e0b612d appsink: Reuse sample object in pull_sample if possible
Simple optimization to reduce memory allocations.

https://bugzilla.gnome.org/show_bug.cgi?id=795145
2018-04-19 16:14:12 +02:00
Vivia Nikolaidou
06aa4e5b68 appsrc: Documentation fix in gst_app_src_push_sample_internal
Make it clear that it doesn't take ownership of the sample.

https://bugzilla.gnome.org/show_bug.cgi?id=795150
2018-04-11 12:28:26 +03:00
Alessandro Decina
345aa2cd9e meson: libs: use gnome.mkenums_simple() to generate enumtypes files
This way we no longer need custom wrapper scripts or template files.
2018-03-22 13:15:35 +00:00
Tim-Philipp Müller
be0ca93a90 app: GST_EXPORT -> GST_APP_API
We need different export decorators for the different libs.
For now no actual change though, just rename before the release,
and add prelude headers to define the new decorator to GST_EXPORT.
2018-03-13 10:29:55 +00:00
Tim-Philipp Müller
4fe5178957 appsrc: don't signal the GCond if no one is waiting on it
Performance optimisation: Keep track whenever the streaming
thread or the application thread are waiting on the GCond for
more space or new data, and only signal on the GCond if someone
is actually waiting. Avoids unnecessary syscalls and thus
context switches.
2018-02-19 16:04:22 +00:00
Tim-Philipp Müller
5a5a1f0dc6 appsrc: use GstQueueArray instead of GQueue for internal item queue
Performance optimisation.

Avoids alloc/free churn for the queue's list nodes.

Depends on new API in GstQueueArray in core.
2018-02-19 16:04:15 +00:00
Tim-Philipp Müller
0846ceef59 appsink: don't signal the GCond if no one is waiting on it
Performance optimisation: Keep track whenever the streaming
thread or the application thread are waiting on the GCond
for more space or new data, and only signal on the GCond if
someone is actually waiting. Avoids unnecessary syscalls and
thus context switches.
2018-02-19 16:03:39 +00:00
Tim-Philipp Müller
8b22d47057 appsink: use GstQueueArray instead of GQueue for internal item queue
Performance optimisation.

Avoids alloc/free churn for the queue's list nodes.
2018-02-19 16:03:06 +00:00
Tim-Philipp Müller
b60cc0274c appsrc: add support for pushing buffer lists
And samples that carry buffer lists.

https://bugzilla.gnome.org/show_bug.cgi?id=752363
2017-12-09 11:09:16 +00:00
Julien Isorce
8af7b1f70b appsink: fix end condition of query drain handler
The while loop should end when all buffers "and" the preroll
buffer are consumed but this means to continue waiting if there
are still some pending buffers "or" preroll buffer.

The unit test was correct but racy because of this mistake.
I.e. because of the wrong "and" the while could finish too early.

cd tests/check && GST_CHECKS=test_query_drain make elements/appsink.forever

https://bugzilla.gnome.org/show_bug.cgi?id=789763
2017-11-29 15:09:04 +00:00
Havard Graff
43985b363d meson: remove vs_module_defs
GST_EXPORT should handle it.
2017-10-05 13:53:14 +01:00
Julien Isorce
fc86194595 appsink: on drain wait for buffers to be consumed
So that an upstream element can claim all buffers to return to its buffer pool.

Added unit test 'test_query_drain'
  make elements/appsink.check

https://bugzilla.gnome.org/show_bug.cgi?id=786739
2017-09-19 14:33:36 +01:00
Julien Isorce
7b1056b946 appsink: also clear preroll buffer in _pull_sample
If someone calls gst_app_sink_try_pull_sample they are
probably no longer interested in any preroll samples.

Useful if the user has not registered a preroll appsink callback.

Also added unit test 'test_do_not_care_preroll'
  make elements/appsink.check
that fails without this patch.

https://bugzilla.gnome.org/show_bug.cgi?id=786740
2017-09-19 09:06:44 +01:00
Julien Isorce
68518acb53 appsink: unref preroll buffer upon pull
There is no reason for appsink to hang onto the preroll buffer.
If needed, the application can just keep a ref on this buffer
after calling gst_app_sink_try_pull_preroll.

Also added unit test 'test_pull_preroll'
  make elements/appsink.check

https://bugzilla.gnome.org/show_bug.cgi?id=786740
2017-09-13 14:11:27 +01:00
Julien Isorce
c134a3c21b appsink: rename GstBuffer *preroll to preroll_buffer
priv->preroll can be confused with basesink_class->preroll

https://bugzilla.gnome.org/show_bug.cgi?id=786740
2017-09-13 14:06:43 +01:00
Philippe Normand
d375a28a37 appsrc: handle duration query only if the property was set
https://bugzilla.gnome.org/show_bug.cgi?id=786200
2017-08-12 16:23:27 +01:00
Tim-Philipp Müller
6105420bfc appsrc: fix doc typos 2017-08-01 17:08:08 +01:00
Sebastian Dröge
8be5030d47 appsrc: Add out annotations to gst_app_src_get_latency() 2017-08-01 18:49:23 +03:00
Tim-Philipp Müller
7ae9b4ac4e app: mark symbols explicitly for export with GST_EXPORT 2017-05-16 15:22:34 +01:00
Tim-Philipp Müller
60e9629860 g-i: no need to load registry in g-i scanner 2017-05-04 23:55:20 +01:00
Rico Tzschichholz
07a427b403 meson: Pass --c-include accordingly to GIR builds 2017-04-13 12:23:32 +01:00
Claudio Saavedra
6b983a79e3 meson: install gstappsink.h
https://bugzilla.gnome.org/show_bug.cgi?id=781168
2017-04-11 11:51:36 +03:00
Sebastian Dröge
a69befecd3 app/tag: Fix build with srcdir!=builddir 2017-04-10 14:25:30 +03:00
Rico Tzschichholz
dc4e041f07 app/tag: Add missing sources/headers to the GIR build 2017-04-10 13:55:58 +03:00
Sebastian Dröge
b56dcb3e20 app: Generate GLib enums with glib-mkenums 2017-04-09 12:29:55 +03:00
Thibault Saunier
099ac9faf2 docs: Convert gtkdoc comments to markdown
Modernizing the documentation, making it simpler to read an
modify and allowing us to possibly switch to hotdoc in the
future.
2017-03-10 18:19:17 -03:00
Tobias Mueller
57ff3ea72f appsrc: fix compiler warning
Initialize min and max _get_property() to gets rid of these
compiler warnings:

gstappsrc.c:741:7: error: 'max' may be used uninitialized in this function
       g_value_set_int64 (value, max);
       ^
gstappsrc.c:733:7: error: 'min' may be used uninitialized in this function
       g_value_set_int64 (value, min);
       ^
Which happens because gcc doesn't know that GST_IS_APP_SRC will never
fail here.

https://bugzilla.gnome.org/show_bug.cgi?id=752052
2016-12-25 13:15:26 +00:00
Tim-Philipp Müller
826eec22f7 appsink: fix g-i warnings and add since markers
Rename function parameter and make sure the name in the
declaration matches the name in the implementation, to
avoid g-i warnings. Also add Since markers for gtk-doc.

gstappsink.c:1248: Warning: GstApp: gst_app_sink_set_buffer_list_support:
unknown parameter 'buffer_list' in documentation comment, should be 'drop'
2016-11-15 18:38:48 +00:00
Patricia Muscalu
f1562053fe appsink: add support for buffer lists
https://bugzilla.gnome.org/show_bug.cgi?id=752363
2016-11-16 02:06:40 +11:00
Thibault Saunier
6917cb629e meson: Generate girs
https://bugzilla.gnome.org/show_bug.cgi?id=773944
2016-11-09 18:06:19 -03:00
Nirbheek Chauhan
5c4f4ac1bd Add support for Meson as alternative/parallel build system
https://github.com/mesonbuild/meson

With contributions from:

Tim-Philipp Müller <tim@centricular.com>
Jussi Pakkanen <jpakkane@gmail.com> (original port)

Highlights of the features provided are:
* Faster builds on Linux (~40-50% faster)
* The ability to build with MSVC on Windows
* Generate Visual Studio project files
* Generate XCode project files
* Much faster builds on Windows (on-par with Linux)
* Seriously fast configure and building on embedded

... and many more. For more details see:

http://blog.nirbheek.in/2016/05/gstreamer-and-meson-new-hope.html
http://blog.nirbheek.in/2016/07/building-and-developing-gstreamer-using.html

Building with Meson should work on both Linux and Windows, but may
need a few more tweaks on other operating systems.
2016-08-20 11:09:51 +01:00
Joan Pau Beltran
c6722c06a0 appsink: add _pull_sample/preroll() variants with timeout
The _pull_sample() and _pull_preroll() functions block
until a sample is available, EOS happens or the pipeline
is shut down (returning NULL in the last two cases).

This adds _try_pull_sample() and _try_pull_preroll()
functions with a timeout argument to specify the maximum
amount of time to wait for a new sample.

To avoid code duplication, wait forever if the timeout is
GST_CLOCK_TIME_NONE and use that to implement
_pull_sample/_pull_preroll with the original behavior.

Add also corresponding action signals "try-pull-sample"
and "try-pull-preroll".

https://bugzilla.gnome.org/show_bug.cgi?id=768852
2016-07-18 16:55:16 +01:00
Seungha Yang
50f74daa2f appsrc: Remove trailing whitespace
https://bugzilla.gnome.org/show_bug.cgi?id=768510
2016-07-11 09:54:11 +03:00
Sebastian Dröge
1032f5c1b3 appsrc: If do-timestamp=TRUE, capture the time when the buffer was pushed to the source
... instead of the time when it was pushed further downstream.

https://bugzilla.gnome.org/show_bug.cgi?id=763630
2016-07-01 14:32:26 +02:00
Tim-Philipp Müller
d52a74f32e g-i: pass compiler env to g-ir-scanner
It's what introspection.mak does as well. Should
fix spurious build failures on gnome-continuous.
2016-05-24 00:44:21 +01:00
Tim-Philipp Müller
7c5ee9d3ef app: remove marshaller files from git 2016-05-16 09:20:36 +01:00
Tim-Philipp Müller
75f3c7cb85 app: use generic marshallers 2016-05-15 15:26:13 +01:00
Sebastian Dröge
dc8120f298 appsrc: Add duration property for providing a duration in TIME format
https://bugzilla.gnome.org/show_bug.cgi?id=766229
2016-05-10 16:50:32 +03:00
Vineeth TM
44b70ca3a1 base: use new gst_element_class_add_static_pad_template()
https://bugzilla.gnome.org/show_bug.cgi?id=763075
2016-03-24 14:25:41 +02:00
Arun Raghavan
91084f49c0 appsrc: Minor documentation cleanup 2016-01-19 12:56:20 +05:30
Evan Callaway
a1f789770d Add WAIT_ON_EOS flag to gstappsink.
If set, an appsink that receives an EOS will wait until all of its buffers have been processed before continuing.

https://bugzilla.gnome.org/show_bug.cgi?id=756187
2016-01-18 13:23:55 +02:00