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aggregator: Add new GstAggregator base class

Browse source 
This base class has been added to a newly created libgstbadbase library

Co-Authored by: Mathieu Duponchelle <mathieu.duponchelle@opencreed.com>

https://bugzilla.gnome.org/show_bug.cgi?id=731917
This commit is contained in:
Thibault Saunier 2014-05-22 19:44:37 +02:00
parent 337bc06de1
commit 55c65d079f
11 changed files with 2704 additions and 2 deletions
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3
configure.ac
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@ -3221,6 +3221,7 @@ gst-libs/gst/codecparsers/Makefile
gst-libs/gst/mpegts/Makefile
gst-libs/gst/uridownloader/Makefile
gst-libs/gst/wayland/Makefile
gst-libs/gst/base/Makefile
sys/Makefile
sys/dshowdecwrapper/Makefile
sys/acmenc/Makefile
@ -3359,6 +3360,8 @@ pkgconfig/gstreamer-mpegts.pc
pkgconfig/gstreamer-mpegts-uninstalled.pc
pkgconfig/gstreamer-wayland.pc
pkgconfig/gstreamer-wayland-uninstalled.pc
pkgconfig/gstreamer-bad-base.pc
pkgconfig/gstreamer-bad-base-uninstalled.pc
tools/Makefile
m4/Makefile
)

6
docs/libs/gst-plugins-bad-libs-docs.sgml
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@ -57,6 +57,12 @@
<xi:include href="xml/gstinsertbin.xml" />
</chapter>
<chapter id="base">
<title>GStreamer Base classes from gst-plugins-bad</title>
<xi:include href="xml/gstaggregator.xml" />
<xi:include href="xml/gstaggregatorpad.xml" />
</chapter>
<chapter id="gl">
<title>OpenGL Helper Library</title>
<xi:include href="xml/gstglapi.xml"/>

35
docs/libs/gst-plugins-bad-libs-sections.txt
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@ -1290,3 +1290,38 @@ gst_gl_window_x11_get_type
GstGLWindowX11Private
x11_event_source_new
</SECTION>
<SECTION>
<FILE>gstaggregator</FILE>
<TITLE>GstAggregator</TITLE>
GstAggregator
GstAggregatorClass
gst_aggregator_finish_buffer
gst_aggregator_set_src_caps
gst_aggregator_iterate_sinkpads
<SUBSECTION Standard>
GST_IS_AGGREGATOR
GST_IS_AGGREGATOR_CLASS
GST_TYPE_AGGREGATOR
GST_AGGREGATOR
GST_AGGREGATOR_CLASS
GST_AGGREGATOR_GET_CLASS
gst_aggregator_get_type
</SECTION>
<SECTION>
<FILE>gstaggregatorpad</FILE>
<TITLE>GstAggregatorPad</TITLE>
GstAggregatorPad
GstAggregatorPadClass
gst_aggregator_pad_steal_buffer
gst_aggregator_pad_get_buffer
<SUBSECTION Standard>
GST_IS_AGGREGATOR_PAD
GST_IS_AGGREGATOR_PAD_CLASS
GST_TYPE_AGGREGATOR_PAD
GST_AGGREGATOR_PAD
GST_AGGREGATOR_PAD_CLASS
GST_AGGREGATOR_PAD_GET_CLASS
gst_aggregator_pad_get_type
</SECTION>

4
gst-libs/gst/Makefile.am
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@ -11,8 +11,8 @@ WAYLAND_DIR=wayland
endif
SUBDIRS = interfaces basecamerabinsrc codecparsers \
insertbin uridownloader mpegts $(GL_DIR) $(WAYLAND_DIR)
insertbin uridownloader mpegts base $(GL_DIR) $(WAYLAND_DIR)
noinst_HEADERS = gst-i18n-plugin.h gettext.h glib-compat-private.h
DIST_SUBDIRS = interfaces gl basecamerabinsrc codecparsers \
insertbin uridownloader mpegts wayland
insertbin uridownloader mpegts wayland base

21
gst-libs/gst/base/Makefile.am Normal file
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@ -0,0 +1,21 @@
lib_LTLIBRARIES = libgstbadbase-@GST_API_VERSION@.la
libgstbadbase_@GST_API_VERSION@_la_SOURCES = \
gstaggregator.c
libgstbadbase_@GST_API_VERSION@_la_CFLAGS = $(GST_CFLAGS)
libgstbadbase_@GST_API_VERSION@_la_LIBADD = $(GST_LIBS)
libgstbadbase_@GST_API_VERSION@_la_LDFLAGS = $(GST_LDFLAGS)
libgstbadbase_@GST_API_VERSION@includedir = $(includedir)/gstreamer-@GST_API_VERSION@/gst/badbase/
libgstbadbase_@GST_API_VERSION@include_HEADERS = \
gstaggregator.h
EXTRA_DIST =
CLEANFILES = *.gcno *.gcda *.gcov
%.c.gcov: .libs/libgstbadbase_@GST_API_VERSION@_la-%.gcda %.c
$(GCOV) -b -f -o $^ > $@.out
gcov: $(libgstbadbase_@GST_API_VERSION@_la_SOURCES:=.gcov)

1323
gst-libs/gst/base/gstaggregator.c Normal file
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256
gst-libs/gst/base/gstaggregator.h Normal file
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@ -0,0 +1,256 @@
/* GStreamer
* Copyright (C) 2014 Mathieu Duponchelle <mathieu.duponchelle@oencreed.com>
* Copyright (C) 2014 Thibault Saunier <tsaunier@gnome.org>
*
* gstaggregator.c:
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public
* License along with this library; if not, write to the
* Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
* Boston, MA 02110-1301, USA.
*/
#ifndef __GST_AGGREGATOR_H__
#define __GST_AGGREGATOR_H__
#include <gst/gst.h>
G_BEGIN_DECLS
/**************************
* GstAggregator Structs *
*************************/
typedef struct _GstAggregator GstAggregator;
typedef struct _GstAggregatorPrivate GstAggregatorPrivate;
typedef struct _GstAggregatorClass GstAggregatorClass;
/************************
* GstAggregatorPad API *
***********************/
#define GST_TYPE_AGGREGATOR_PAD (gst_aggregator_pad_get_type())
#define GST_AGGREGATOR_PAD(obj) (G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_AGGREGATOR_PAD, GstAggregatorPad))
#define GST_AGGREGATOR_PAD_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_AGGREGATOR_PAD, GstAggregatorPadClass))
#define GST_AGGREGATOR_PAD_GET_CLASS(obj) (G_TYPE_INSTANCE_GET_CLASS ((obj),GST_TYPE_AGGREGATOR_PAD, GstAggregatorPadClass))
#define GST_IS_AGGREGATOR_PAD(obj) (G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_AGGREGATOR_PAD))
#define GST_IS_AGGREGATOR_PAD_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_AGGREGATOR_PAD))
/****************************
* GstAggregatorPad Structs *
***************************/
typedef struct _GstAggregatorPad GstAggregatorPad;
typedef struct _GstAggregatorPadClass GstAggregatorPadClass;
typedef struct _GstAggregatorPadPrivate GstAggregatorPadPrivate;
/**
* GstAggregatorPad:
* @buffer: currently queued buffer.
* @segment: last segment received.
*
* The implementation the GstPad to use with #GstAggregator
*/
struct _GstAggregatorPad
{
GstPad parent;
GstBuffer * buffer;
GstSegment segment;
gboolean eos;
/* < Private > */
GstAggregatorPadPrivate * priv;
gpointer _gst_reserved[GST_PADDING];
};
/**
* GstAggregatorPadClass:
* @flush: Optional
* Called when the pad has received a flush stop, this is the place
* to flush any information specific to the pad, it allows for individual
* pads to be flushed while others might not be.
*
*/
struct _GstAggregatorPadClass
{
GstPadClass parent_class;
GstFlowReturn (*flush) (GstAggregatorPad * aggpad, GstAggregator * aggregator);
/*< private >*/
gpointer _gst_reserved[GST_PADDING];
};
GType gst_aggregator_pad_get_type (void);
/****************************
* GstAggregatorPad methods *
***************************/
GstBuffer * gst_aggregator_pad_steal_buffer (GstAggregatorPad * pad);
GstBuffer * gst_aggregator_pad_get_buffer (GstAggregatorPad * pad);
/*********************
* GstAggregator API *
********************/
#define GST_TYPE_AGGREGATOR (gst_aggregator_get_type())
#define GST_AGGREGATOR(obj) (G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_AGGREGATOR,GstAggregator))
#define GST_AGGREGATOR_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_AGGREGATOR,GstAggregatorClass))
#define GST_AGGREGATOR_GET_CLASS(obj) (G_TYPE_INSTANCE_GET_CLASS ((obj),GST_TYPE_AGGREGATOR,GstAggregatorClass))
#define GST_IS_AGGREGATOR(obj) (G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_AGGREGATOR))
#define GST_IS_AGGREGATOR_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_AGGREGATOR))
#define GST_FLOW_CUSTOM_SUCCESS GST_FLOW_NOT_HANDLED
/**
* GstAggregator:
* @aggregator_pads: #GList of #GstAggregatorPad managed by this #GstAggregator.
*
* Collectpads object.
*/
struct _GstAggregator
{
GstElement parent;
GstPad * srcpad;
GstSegment segment;
/*< private >*/
GstAggregatorPrivate * priv;
gpointer _gst_reserved[GST_PADDING];
};
/**
* GstAggregatorClass:
* @sinkpads_type: Optional.
* The type of the pads that should be created when
* GstElement.request_new_pad is called.
* @flush: Optional.
* Called after a succesful flushing seek, once all the flush
* stops have been received. Flush pad-specific data in
* #GstAggregatorPad->flush.
* @clip: Optional.
* Called when a buffer is received on a sink pad, the task
* of clipping it and translating it to the current segment
* falls on the subclass.
* @sink_event: Optional.
* Called when an event is received on a sink pad, the subclass
* should always chain up.
* @sink_query: Optional.
* Called when a query is received on a sink pad, the subclass
* should always chain up.
* @src_event: Optional.
* Called when an event is received on the src pad, the subclass
* should always chain up.
* @src_query: Optional.
* Called when a query is received on the src pad, the subclass
* should always chain up.
* @src_activate: Optional.
* Called when the src pad is activated, it will start/stop its
* pad task right after that call.
* @aggregate: Mandatory.
* Called when buffers are queued on all sinkpads. Classes
* should iterate the GstElement->sinkpads and peek or steal
* buffers from the #GstAggregatorPads. If the subclass returns
* GST_FLOW_EOS, sending of the eos event will be taken care
* of. Once / if a buffer has been constructed from the
* aggregated buffers, the subclass should call _finish_buffer.
* @stop: Optional.
* Should be linked up first. Called when the
* element goes from PAUSED to READY. The subclass should free
* all resources and reset its state.
* @start: Optional.
* Should be linked up first. Called when the element goes from
* READY to PAUSED. The subclass should get ready to process
* aggregated buffers.
*
* The aggregator base class will handle in a thread-safe way all manners of
* concurrent flushes, seeks, pad additions and removals, leaving to the
* subclass the responsibility of clipping buffers, and aggregating buffers in
* the way the implementor sees fit.
*
* It will also take care of event ordering (stream-start, segment, eos).
*
* Basically, a basic implementation will override @aggregate, and call
* _finish_buffer from inside that function.
*/
struct _GstAggregatorClass {
GstElementClass parent_class;
GType sinkpads_type;
GstFlowReturn (*flush) (GstAggregator * aggregator);
GstFlowReturn (*clip) (GstAggregator * agg,
GstAggregatorPad * bpad,
GstBuffer * buf,
GstBuffer ** outbuf);
/* sinkpads virtual methods */
gboolean (*sink_event) (GstAggregator * aggregate,
GstAggregatorPad * bpad,
GstEvent * event);
gboolean (*sink_query) (GstAggregator * aggregate,
GstAggregatorPad * bpad,
GstQuery * query);
/* srcpad virtual methods */
gboolean (*src_event) (GstAggregator * aggregate,
GstEvent * event);
gboolean (*src_query) (GstAggregator * aggregate,
GstQuery * query);
gboolean (*src_activate) (GstAggregator * aggregator,
GstPadMode mode,
gboolean active);
GstFlowReturn (*aggregate) (GstAggregator * aggregator);
gboolean (*stop) (GstAggregator * aggregator);
gboolean (*start) (GstAggregator * aggregator);
/*< private >*/
gpointer _gst_reserved[GST_PADDING];
};
/*************************
* GstAggregator methods *
************************/
GstFlowReturn gst_aggregator_finish_buffer (GstAggregator * agg,
GstBuffer * buffer);
void gst_aggregator_set_src_caps (GstAggregator * agg,
GstCaps * caps);
GType gst_aggregator_get_type(void);
/* API that should eventually land in GstElement itself*/
typedef gboolean (*GstAggregatorPadForeachFunc) (GstAggregator * self,
GstPad * pad,
gpointer user_data);
gboolean gst_aggregator_iterate_sinkpads (GstAggregator * self,
GstAggregatorPadForeachFunc func,
gpointer user_data);
G_END_DECLS
#endif /* __GST_AGGREGATOR_H__ */

15
pkgconfig/gstreamer-bad-base-uninstalled.pc.in Normal file
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@ -0,0 +1,15 @@
prefix=
exec_prefix=
libdir=${pcfiledir}/../gst-libs/gst/base
includedir=${pcfiledir}/../gst-libs
pluginsdir=${pcfiledir}/..
Name: GStreamer bad base classes, uninstalled
Description: Bad base classes for GStreamer elements, Not Installed
Version: @VERSION@
Requires: gstreamer-@GST_API_VERSION@
Libs: -L${libdir} ${libdir}/libgstbadbase-@GST_API_VERSION@.la @BADBASE_LIBS@
Cflags: -I${includedir} -I@srcdir@/.. @BADBASE_CFLAGS@
libraries=badbase

15
pkgconfig/gstreamer-bad-base.pc.in Normal file
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@ -0,0 +1,15 @@
prefix=@prefix@
exec_prefix=@exec_prefix@
libdir=@libdir@
includedir=@includedir@/gstreamer-@GST_API_VERSION@
pluginsdir=@libdir@/gstreamer-@GST_API_VERSION@
Name: GStreamer bad base classes, uninstalled
Description: Bad base classes for GStreamer elements, Not Installed
Version: @VERSION@
Requires: gstreamer-@GST_API_VERSION@
Libs: -L${libdir} ${libdir}/libgstbadbase-@GST_API_VERSION@.la @BADBASE_LIBS@
Cflags: -I${includedir} -I@srcdir@/.. @BADBASE_CFLAGS@
libraries=badbase

11
tests/check/Makefile.am
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@ -244,6 +244,7 @@ check_PROGRAMS = \
libs/mpegts \
libs/h264parser \
libs/vp8parser \
libs/aggregator \
$(check_uvch264) \
libs/vc1parser \
$(check_schro) \
@ -455,6 +456,16 @@ libs_gstglupload_LDADD = \
$(GST_PLUGINS_BASE_LIBS) -lgstvideo-$(GST_API_VERSION) \
$(GST_BASE_LIBS) $(GST_LIBS) $(LDADD)
libs_aggregator_LDADD = \
$(top_builddir)/gst-libs/gst/base/libgstbadbase-@GST_API_VERSION@.la \
$(GST_PLUGINS_BASE_LIBS) \
$(GST_BASE_LIBS) $(GST_LIBS) $(LDADD)
libs_aggregator_CFLAGS = \
$(GST_PLUGINS_BAD_CFLAGS) $(GST_PLUGINS_BASE_CFLAGS) \
-DGST_USE_UNSTABLE_API \
$(GST_BASE_CFLAGS) $(GST_CFLAGS) $(AM_CFLAGS)
distclean-local-orc:
rm -rf orc

1017
tests/check/libs/aggregator.c Normal file
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