gstreamer/ges/ges-video-uri-source.c
Thibault Saunier 0be8bc9d98 ges: Avoid adding unnecessary converters for nested timelines
Basically we know that if we are using mixing, compositor will be
able to do video conversion and scaling for us, so avoid adding those
usless elements.

This optimizes a lot caps negotiation for deeply nested timelines.
2020-02-12 17:50:37 -03:00

245 lines
6.6 KiB
C

/* GStreamer Editing Services
* Copyright (C) 2009 Edward Hervey <edward.hervey@collabora.co.uk>
* 2009 Nokia Corporation
*
* 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:gesvideourisource
* @title: GESVideoUriSource
* @short_description: outputs a single video stream from a given file
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include <gst/pbutils/missing-plugins.h>
#include "ges-utils.h"
#include "ges-internal.h"
#include "ges-track-element.h"
#include "ges-video-uri-source.h"
#include "ges-uri-asset.h"
#include "ges-extractable.h"
struct _GESVideoUriSourcePrivate
{
GstElement *decodebin; /* Reference owned by parent class */
};
enum
{
PROP_0,
PROP_URI
};
static void
ges_video_uri_source_track_set_cb (GESVideoUriSource * self,
GParamSpec * arg G_GNUC_UNUSED, gpointer nothing)
{
GESTrack *track;
const GstCaps *caps = NULL;
if (!self->priv->decodebin)
return;
track = ges_track_element_get_track (GES_TRACK_ELEMENT (self));
if (!track)
return;
caps = ges_track_get_caps (track);
GST_INFO_OBJECT (self, "Setting caps to: %" GST_PTR_FORMAT, caps);
g_object_set (self->priv->decodebin, "caps", caps, NULL);
}
/* GESSource VMethod */
static GstElement *
ges_video_uri_source_create_source (GESTrackElement * trksrc)
{
GESVideoUriSource *self;
GESTrack *track;
GstElement *decodebin;
const GstCaps *caps = NULL;
self = (GESVideoUriSource *) trksrc;
track = ges_track_element_get_track (trksrc);
if (track)
caps = ges_track_get_caps (track);
decodebin = self->priv->decodebin = gst_element_factory_make ("uridecodebin",
NULL);
g_object_set (decodebin, "caps", caps,
"expose-all-streams", FALSE, "uri", self->uri, NULL);
return decodebin;
}
static gboolean
ges_video_uri_source_needs_converters (GESVideoSource * source)
{
GESTrack *track = ges_track_element_get_track (GES_TRACK_ELEMENT (source));
if (!track || ges_track_get_mixing (track)) {
GESAsset *asset = ges_asset_request (GES_TYPE_URI_CLIP,
GES_VIDEO_URI_SOURCE (source)->uri, NULL);
gboolean is_nested = FALSE;
g_assert (asset);
g_object_get (asset, "is-nested-timeline", &is_nested, NULL);
gst_object_unref (asset);
return !is_nested;
}
return FALSE;
}
/* Extractable interface implementation */
static gchar *
ges_extractable_check_id (GType type, const gchar * id, GError ** error)
{
return g_strdup (id);
}
static void
extractable_set_asset (GESExtractable * extractable, GESAsset * asset)
{
/* FIXME That should go into #GESTrackElement, but
* some work is needed to make sure it works properly */
if (ges_track_element_get_track_type (GES_TRACK_ELEMENT (extractable)) ==
GES_TRACK_TYPE_UNKNOWN) {
ges_track_element_set_track_type (GES_TRACK_ELEMENT (extractable),
ges_track_element_asset_get_track_type (GES_TRACK_ELEMENT_ASSET
(asset)));
}
}
static void
ges_extractable_interface_init (GESExtractableInterface * iface)
{
iface->asset_type = GES_TYPE_URI_SOURCE_ASSET;
iface->check_id = ges_extractable_check_id;
iface->set_asset = extractable_set_asset;
}
G_DEFINE_TYPE_WITH_CODE (GESVideoUriSource, ges_video_uri_source,
GES_TYPE_VIDEO_SOURCE, G_ADD_PRIVATE (GESVideoUriSource)
G_IMPLEMENT_INTERFACE (GES_TYPE_EXTRACTABLE,
ges_extractable_interface_init));
/* GObject VMethods */
static void
ges_video_uri_source_get_property (GObject * object, guint property_id,
GValue * value, GParamSpec * pspec)
{
GESVideoUriSource *uriclip = GES_VIDEO_URI_SOURCE (object);
switch (property_id) {
case PROP_URI:
g_value_set_string (value, uriclip->uri);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
}
}
static void
ges_video_uri_source_set_property (GObject * object, guint property_id,
const GValue * value, GParamSpec * pspec)
{
GESVideoUriSource *uriclip = GES_VIDEO_URI_SOURCE (object);
switch (property_id) {
case PROP_URI:
if (uriclip->uri) {
GST_WARNING_OBJECT (object, "Uri already set to %s", uriclip->uri);
return;
}
uriclip->uri = g_value_dup_string (value);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
}
}
static void
ges_video_uri_source_dispose (GObject * object)
{
GESVideoUriSource *uriclip = GES_VIDEO_URI_SOURCE (object);
if (uriclip->uri)
g_free (uriclip->uri);
G_OBJECT_CLASS (ges_video_uri_source_parent_class)->dispose (object);
}
static void
ges_video_uri_source_class_init (GESVideoUriSourceClass * klass)
{
GObjectClass *object_class = G_OBJECT_CLASS (klass);
GESVideoSourceClass *source_class = GES_VIDEO_SOURCE_CLASS (klass);
object_class->get_property = ges_video_uri_source_get_property;
object_class->set_property = ges_video_uri_source_set_property;
object_class->dispose = ges_video_uri_source_dispose;
/**
* GESVideoUriSource:uri:
*
* The location of the file/resource to use.
*/
g_object_class_install_property (object_class, PROP_URI,
g_param_spec_string ("uri", "URI", "uri of the resource",
NULL, G_PARAM_READWRITE | G_PARAM_CONSTRUCT_ONLY));
source_class->create_source = ges_video_uri_source_create_source;
source_class->ABI.abi.needs_converters =
ges_video_uri_source_needs_converters;
}
static void
ges_video_uri_source_init (GESVideoUriSource * self)
{
self->priv = ges_video_uri_source_get_instance_private (self);
g_signal_connect (self, "notify::track",
G_CALLBACK (ges_video_uri_source_track_set_cb), NULL);
}
/**
* ges_video_uri_source_new:
* @uri: the URI the source should control
*
* Creates a new #GESVideoUriSource for the provided @uri.
*
* Returns: (transfer floating) (nullable): The newly created #GESVideoUriSource,
* or %NULL if there was an error.
*/
GESVideoUriSource *
ges_video_uri_source_new (gchar * uri)
{
return g_object_new (GES_TYPE_VIDEO_URI_SOURCE, "uri", uri, NULL);
}