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d45e594a31
Part-of: <https://gitlab.freedesktop.org/gstreamer/gst-editing-services/-/merge_requests/227>
150 lines
4 KiB
C
150 lines
4 KiB
C
/* GStreamer Editing Services GStreamer plugin
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* Copyright (C) 2019 Thibault Saunier <tsaunier@igalia.com>
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*
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* gessrc.c
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Library General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Library General Public License for more details.
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*
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* You should have received a copy of the GNU Library General Public
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* License along with this library; if not, write to the
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* Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
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* Boston, MA 02110-1301, USA.
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*
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**
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* SECTION:element-gessrc
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* @short_description: A GstBin subclasses use to use GESTimeline
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* as sources inside any GstPipeline.
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* @see_also: #GESTimeline
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*
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* The gessrc is a bin that will simply expose the track src pads
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* and implements the GstUriHandler interface using a custom `ges://`
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* uri scheme.
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*
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* NOTE: That to use it inside playbin and friends you **need** to
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* set gessrc::timeline property yourself.
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*
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* Example with #playbin:
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*
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* {{../../examples/c/gessrc.c}}
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*
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* Example with #GstPlayer:
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*
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* {{../../examples/python/gst-player.py}}
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**/
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#ifdef HAVE_CONFIG_H
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#include "config.h"
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#endif
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#include <gst/gst.h>
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#include <ges/ges.h>
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#include "gesbasebin.h"
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GST_DEBUG_CATEGORY_STATIC (gessrc);
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#define GST_CAT_DEFAULT gessrc
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G_DECLARE_FINAL_TYPE (GESSrc, ges_src, GES, SRC, GESBaseBin);
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struct _GESSrc
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{
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GESBaseBin parent;
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};
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#define GES_SRC(obj) ((GESSrc*) obj)
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/*** GSTURIHANDLER INTERFACE *************************************************/
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static GstURIType
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ges_src_uri_get_type (GType type)
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{
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return GST_URI_SRC;
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}
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static const gchar *const *
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ges_src_uri_get_protocols (GType type)
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{
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static const gchar *protocols[] = { "ges", NULL };
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return protocols;
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}
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static gchar *
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ges_src_uri_get_uri (GstURIHandler * handler)
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{
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GESSrc *self = GES_SRC (handler);
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GESTimeline *timeline = ges_base_bin_get_timeline (GES_BASE_BIN (self));
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return ges_command_line_formatter_get_timeline_uri (timeline);
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}
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static gboolean
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ges_src_uri_set_uri (GstURIHandler * handler, const gchar * uristr,
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GError ** error)
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{
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gboolean res = FALSE;
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GstUri *uri = gst_uri_from_string (uristr);
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GESProject *project = NULL;
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GESTimeline *timeline = NULL;
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if (!gst_uri_get_path (uri)) {
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GST_INFO_OBJECT (handler, "User need to specify the timeline");
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res = TRUE;
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goto done;
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}
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project = ges_project_new (uristr);
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timeline = (GESTimeline *) ges_asset_extract (GES_ASSET (project), NULL);
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if (timeline)
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res = ges_base_bin_set_timeline (GES_BASE_BIN (handler), timeline);
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done:
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gst_uri_unref (uri);
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gst_clear_object (&project);
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return res;
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}
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static void
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ges_src_uri_handler_init (gpointer g_iface, gpointer iface_data)
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{
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GstURIHandlerInterface *iface = (GstURIHandlerInterface *) g_iface;
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iface->get_type = ges_src_uri_get_type;
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iface->get_protocols = ges_src_uri_get_protocols;
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iface->get_uri = ges_src_uri_get_uri;
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iface->set_uri = ges_src_uri_set_uri;
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}
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G_DEFINE_TYPE_WITH_CODE (GESSrc, ges_src, ges_base_bin_get_type (),
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G_IMPLEMENT_INTERFACE (GST_TYPE_URI_HANDLER, ges_src_uri_handler_init));
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static void
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ges_src_class_init (GESSrcClass * self_class)
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{
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GstElementClass *gstelement_klass = GST_ELEMENT_CLASS (self_class);
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GST_DEBUG_CATEGORY_INIT (gessrc, "gessrc", 0, "ges src element");
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gst_element_class_set_static_metadata (gstelement_klass,
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"GStreamer Editing Services based 'source'",
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"Codec/Source/Editing",
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"Source for GESTimeline.", "Thibault Saunier <tsaunier@igalia.com");
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}
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static void
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ges_src_init (GESSrc * self)
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{
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SUPRESS_UNUSED_WARNING (GES_SRC);
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SUPRESS_UNUSED_WARNING (GES_IS_SRC);
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#if defined(g_autoptr)
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SUPRESS_UNUSED_WARNING (glib_autoptr_cleanup_GESSrc);
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#endif
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}
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