Commit 4b324da3 authored by Thibault Saunier's avatar Thibault Saunier 🌵 Committed by Mathieu Duponchelle

plugins: implement a gessrc element useable from playbin

This is a new simple GstBin that can handle the ges:// uris
and will directly expose the srcppads of the tracks present in the
timeline.
parent bad64296
#include <ges/ges.h>
static void
bus_message_cb (GstBus * bus, GstMessage * message, GMainLoop * mainloop)
{
switch (GST_MESSAGE_TYPE (message)) {
case GST_MESSAGE_ERROR:
g_printerr ("Got error message on the bus\n");
g_main_loop_quit (mainloop);
break;
case GST_MESSAGE_EOS:
g_print ("Done\n");
g_main_loop_quit (mainloop);
break;
default:
break;
}
}
static void
source_setup_cb (GstElement * playbin, GstElement * source,
GESTimeline * timeline)
{
g_object_set (source, "timeline", timeline, NULL);
}
int
main (int argc, char **argv)
{
GMainLoop *mainloop = NULL;
GstElement *pipeline = NULL;
GESTimeline *timeline;
GESLayer *layer = NULL;
GstBus *bus = NULL;
guint i, ret = 0;
gchar *uri = NULL;
GstClockTime start = 0;
if (argc < 2) {
g_print ("Usage: %s <list of files>\n", argv[0]);
return -1;
}
gst_init (&argc, &argv);
ges_init ();
timeline = ges_timeline_new_audio_video ();
layer = (GESLayer *) ges_layer_new ();
if (!ges_timeline_add_layer (timeline, layer))
return -1;
/* Build the timeline */
for (i = 1; i < argc; i++) {
GESClip *clip;
uri = g_strdup (argv[i]);
if (!gst_uri_is_valid (uri)) {
g_free (uri);
uri = gst_filename_to_uri (argv[i], NULL);
}
clip = GES_CLIP (ges_uri_clip_new (uri));
if (!clip) {
g_printerr ("Could not create clip for file: %s\n", argv[i]);
g_free (uri);
goto err;
}
g_object_set (clip, "start", start, NULL);
ges_layer_add_clip (layer, clip);
start += ges_timeline_element_get_duration (GES_TIMELINE_ELEMENT (clip));
g_free (uri);
}
/* Use a usual playbin pipeline */
pipeline = gst_element_factory_make ("playbin", NULL);
g_object_set (pipeline, "uri", "ges://", NULL);
g_signal_connect (pipeline, "source-setup", G_CALLBACK (source_setup_cb),
timeline);
mainloop = g_main_loop_new (NULL, FALSE);
bus = gst_pipeline_get_bus (GST_PIPELINE (pipeline));
gst_bus_add_signal_watch (bus);
g_signal_connect (bus, "message", G_CALLBACK (bus_message_cb), mainloop);
gst_element_set_state (pipeline, GST_STATE_PLAYING);
g_main_loop_run (mainloop);
gst_element_set_state (pipeline, GST_STATE_NULL);
done:
gst_clear_object (&pipeline);
if (mainloop)
g_main_loop_unref (mainloop);
return ret;
err:
goto done;
}
examples = [
'concatenate',
'gessrc',
'simple1',
'test1',
'test2',
......
import sys
import gi
gi.require_version('Gst', '1.0')
gi.require_version('GES', '1.0')
gi.require_version('GstPlayer', '1.0')
gi.require_version('GLib', '2.0')
from gi.repository import Gst, GES, GLib, GstPlayer
if __name__ == "__main__":
if len(sys.argv) < 2:
print("You must specify a file URI")
sys.exit(-1)
Gst.init(None)
GES.init()
timeline = GES.Timeline.new_audio_video()
layer = timeline.append_layer()
start = 0
for uri in sys.argv[1:]:
if not Gst.uri_is_valid(uri):
uri = Gst.filename_to_uri(uri)
clip = GES.UriClip.new(uri)
clip.props.start = start
layer.add_clip(clip)
start += clip.props.duration
player = GstPlayer
player = GstPlayer.Player.new(None, GstPlayer.PlayerGMainContextSignalDispatcher.new(None))
player.set_uri("ges://")
player.get_pipeline().connect("source-setup",
lambda playbin, source: source.set_property("timeline", timeline))
loop = GLib.MainLoop()
player.connect("end-of-stream", lambda x: loop.quit())
def error(player, err):
loop.quit()
print("Got error: %s" % err)
sys.exit(1)
player.connect("error", error)
player.play()
loop.run()
/* GStreamer GES plugin
*
* Copyright (C) 2015 Thibault Saunier <thibault.saunier@collabora.com>
*
* gstges.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.
*
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include <gst/gst.h>
#include "gessrc.h"
static gboolean
plugin_init (GstPlugin * plugin)
{
gboolean res = 1;
res |= gst_element_register (plugin, "gessrc", GST_RANK_NONE, GES_SRC_TYPE);
return res;
}
/* plugin export resolution */
GST_PLUGIN_DEFINE (GST_VERSION_MAJOR,
GST_VERSION_MINOR,
ges,
"GStreamer Editing Services Plugin",
plugin_init, VERSION, "LGPL", GST_PACKAGE_NAME, GST_PACKAGE_ORIGIN);
/* GStreamer Editing Services GStreamer plugin
* Copyright (C) 2019 Thibault Saunier <tsaunier@igalia.com>
*
* gessrc.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.
*
**
* SECTION:gessrc
* @short_description: A GstBin subclasses use to use GESTimeline
* as sources inside any GstPipeline.
* @see_also: #GESTimeline
*
* The gessrc is a bin that will simply expose the track src pads
* and implements the GstUriHandler interface using a custom `ges://`
* uri scheme.
*
* NOTE: That to use it inside playbin and friends you **need** to
* set gessrc::timeline property yourself.
*
* Example with #playbin:
*
* {{../../examples/c/gessrc.c}}
*
* Example with #GstPlayer:
*
* {{../../examples/python/gst-player.py}}
**/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include <gst/gst.h>
#include "gessrc.h"
GST_DEBUG_CATEGORY_STATIC (gessrc);
#define GST_CAT_DEFAULT gessrc
static GstStaticPadTemplate video_src_template =
GST_STATIC_PAD_TEMPLATE ("video_src",
GST_PAD_SRC,
GST_PAD_SOMETIMES,
GST_STATIC_CAPS ("video/x-raw(ANY)"));
static GstStaticPadTemplate audio_src_template =
GST_STATIC_PAD_TEMPLATE ("audio_src",
GST_PAD_SRC,
GST_PAD_SOMETIMES,
GST_STATIC_CAPS ("audio/x-raw(ANY);"));
enum
{
PROP_0,
PROP_TIMELINE,
PROP_LAST
};
static GParamSpec *properties[PROP_LAST];
static gboolean
ges_src_set_timeline (GESSrc * self, GESTimeline * timeline)
{
GList *tmp;
guint naudiopad = 0, nvideopad = 0;
GstBin *sbin = GST_BIN (self);
g_return_val_if_fail (GES_IS_TIMELINE (timeline), FALSE);
if (self->timeline) {
GST_FIXME_OBJECT (self, "Implement changing timeline support");
return FALSE;
}
self->timeline = timeline;
gst_bin_add (sbin, GST_ELEMENT (self->timeline));
for (tmp = self->timeline->tracks; tmp; tmp = tmp->next) {
GstPad *gpad;
gchar *name = NULL;
GstElement *queue;
GESTrack *track = GES_TRACK (tmp->data);
GstPad *tmppad, *pad =
ges_timeline_get_pad_for_track (self->timeline, track);
GstStaticPadTemplate *template;
if (!pad) {
GST_INFO_OBJECT (self, "No pad for track: %" GST_PTR_FORMAT, track);
continue;
}
if (track->type == GES_TRACK_TYPE_AUDIO) {
name = g_strdup_printf ("audio_%u", naudiopad++);
template = &audio_src_template;
} else if (track->type == GES_TRACK_TYPE_VIDEO) {
name = g_strdup_printf ("video_%u", nvideopad++);
template = &video_src_template;
} else {
GST_INFO_OBJECT (self, "Track type not handled: %" GST_PTR_FORMAT, track);
continue;
}
queue = gst_element_factory_make ("queue", NULL);
/* Add queues the same way as in GESPipeline */
g_object_set (G_OBJECT (queue), "max-size-buffers", 0,
"max-size-bytes", 0, "max-size-time", (gint64) 2 * GST_SECOND, NULL);
gst_bin_add (GST_BIN (self), queue);
tmppad = gst_element_get_static_pad (queue, "sink");
if (gst_pad_link (pad, tmppad) != GST_PAD_LINK_OK) {
GST_ERROR ("Could not link %s:%s and %s:%s",
GST_DEBUG_PAD_NAME (pad), GST_DEBUG_PAD_NAME (tmppad));
gst_object_unref (tmppad);
gst_object_unref (queue);
continue;
}
tmppad = gst_element_get_static_pad (queue, "src");
gpad = gst_ghost_pad_new_from_template (name, tmppad,
gst_static_pad_template_get (template));
gst_pad_set_active (gpad, TRUE);
gst_element_add_pad (GST_ELEMENT (self), gpad);
}
gst_element_sync_state_with_parent (GST_ELEMENT (self->timeline));
return TRUE;
}
/*** GSTURIHANDLER INTERFACE *************************************************/
static GstURIType
ges_src_uri_get_type (GType type)
{
return GST_URI_SRC;
}
static const gchar *const *
ges_src_uri_get_protocols (GType type)
{
static const gchar *protocols[] = { "ges", NULL };
return protocols;
}
static gchar *
ges_src_uri_get_uri (GstURIHandler * handler)
{
GESSrc *self = GES_SRC (handler);
return self->timeline ? g_strdup_printf ("ges://%s",
GST_OBJECT_NAME (self->timeline)) : NULL;
}
static gboolean
ges_src_uri_set_uri (GstURIHandler * handler, const gchar * uri,
GError ** error)
{
return TRUE;
}
static void
ges_src_uri_handler_init (gpointer g_iface, gpointer iface_data)
{
GstURIHandlerInterface *iface = (GstURIHandlerInterface *) g_iface;
iface->get_type = ges_src_uri_get_type;
iface->get_protocols = ges_src_uri_get_protocols;
iface->get_uri = ges_src_uri_get_uri;
iface->set_uri = ges_src_uri_set_uri;
}
G_DEFINE_TYPE_WITH_CODE (GESSrc, ges_src, GST_TYPE_BIN,
G_IMPLEMENT_INTERFACE (GST_TYPE_URI_HANDLER, ges_src_uri_handler_init));
static void
ges_src_get_property (GObject * object, guint property_id,
GValue * value, GParamSpec * pspec)
{
GESSrc *self = GES_SRC (object);
switch (property_id) {
case PROP_TIMELINE:
g_value_set_object (value, self->timeline);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
}
}
static void
ges_src_set_property (GObject * object, guint property_id,
const GValue * value, GParamSpec * pspec)
{
GESSrc *self = GES_SRC (object);
switch (property_id) {
case PROP_TIMELINE:
ges_src_set_timeline (self, g_value_get_object (value));
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
}
}
static void
ges_src_class_init (GESSrcClass * self_class)
{
GObjectClass *gclass = G_OBJECT_CLASS (self_class);
GstElementClass *gstelement_klass = GST_ELEMENT_CLASS (self_class);
GST_DEBUG_CATEGORY_INIT (gessrc, "gessrc", 0, "ges src element");
gclass->get_property = ges_src_get_property;
gclass->set_property = ges_src_set_property;
/**
* GESSrc:timeline:
*
* Timeline to use in this src.
*/
properties[PROP_TIMELINE] = g_param_spec_object ("timeline", "Timeline",
"Timeline to use in this src.",
GES_TYPE_TIMELINE, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS);
g_object_class_install_properties (gclass, PROP_LAST, properties);
gst_element_class_add_pad_template (gstelement_klass,
gst_static_pad_template_get (&video_src_template));
gst_element_class_add_pad_template (gstelement_klass,
gst_static_pad_template_get (&audio_src_template));
}
static void
ges_src_init (GESSrc * self)
{
}
/* GStreamer GES plugin
*
* Copyright (C) 2019 Thibault Saunier <tsaunier@igalia.com>
*
* gstges.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 __GES_SRC_H__
#define __GES_SRC_H__
#include <gst/gst.h>
#include <ges/ges.h>
G_BEGIN_DECLS
GType ges_src_get_type (void);
#define GES_SRC_TYPE (ges_src_get_type ())
#define GES_SRC(obj) (G_TYPE_CHECK_INSTANCE_CAST ((obj), GES_SRC_TYPE, GESSrc))
#define GES_SRC_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST ((klass), GES_SRC_TYPE, GESSrcClass))
#define GES_IS_SRC(obj) (G_TYPE_CHECK_INSTANCE_TYPE ((obj), GES_SRC_TYPE))
#define GES_IS_SRC_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE ((klass), GES_SRC_TYPE))
#define GES_SRC_GET_CLASS(obj) (G_TYPE_INSTANCE_GET_CLASS ((obj), GES_SRC_TYPE, GESSrcClass))
typedef struct {
GstBin parent;
GESTimeline *timeline;
} GESSrc;
typedef struct {
GstBinClass parent;
} GESSrcClass;
G_END_DECLS
#endif /* __GES_SRC_H__ */
gstges_sources = ['gesplugin.c', 'gessrc.c', 'gesdemux.c']
gstges = library('gstges', gstges_sources,
dependencies : [gst_dep, ges_dep],
include_directories: [configinc],
c_args : ges_c_args,
install : true,
install_dir : plugins_install_dir,
)
pkgconfig.generate(nle, install_dir : plugins_pkgconfig_install_dir)
subdir('nle')
subdir('ges')
\ No newline at end of file
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