gstreamer/ges/ges-effect-asset.c
Tim-Philipp Müller a7347ca8f7 WIP: ges: fix API export/import and 'inconsistent linkage' on MSVC
Export GES library API in headers when we're building the
library itself, otherwise import the API from the headers.

This fixes linker warnings on Windows when building with MSVC.

Fix up some missing config.h includes when building the lib which
is needed to get the export api define from config.h

Fixes https://gitlab.freedesktop.org/gstreamer/gst-editing-services/issues/42
2018-12-15 00:14:51 +00:00

175 lines
4.6 KiB
C

/* Gstreamer Editing Services
*
* Copyright (C) <2012> Thibault Saunier <thibault.saunier@collabora.com>
*
* 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., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
*/
/* SECTION: geseffectasset
* @short_description: A GESAsset subclass specialized in GESEffect extraction
*
* This is internal, and implementation details, so we are not showing it in the
* documentation
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include "ges-effect-asset.h"
#include "ges-track-element.h"
#include "ges-internal.h"
struct _GESEffectAssetPrivate
{
gpointer nothing;
};
G_DEFINE_TYPE_WITH_PRIVATE (GESEffectAsset, ges_effect_asset,
GES_TYPE_TRACK_ELEMENT_ASSET);
static void
_fill_track_type (GESAsset * asset)
{
GESTrackType ttype;
gchar *bin_desc;
const gchar *id = ges_asset_get_id (asset);
bin_desc = ges_effect_assect_id_get_type_and_bindesc (id, &ttype, NULL);
if (bin_desc) {
ges_track_element_asset_set_track_type (GES_TRACK_ELEMENT_ASSET (asset),
ttype);
g_free (bin_desc);
} else {
GST_WARNING_OBJECT (asset, "No track type set, you should"
" specify one in [audio, video] as first component" " in the asset id");
}
}
/* GESAsset virtual methods implementation */
static GESExtractable *
_extract (GESAsset * asset, GError ** error)
{
GESExtractable *effect;
effect = GES_ASSET_CLASS (ges_effect_asset_parent_class)->extract (asset,
error);
if (effect == NULL || (error && *error)) {
effect = NULL;
return NULL;
}
return effect;
}
static void
ges_effect_asset_init (GESEffectAsset * self)
{
self->priv = ges_effect_asset_get_instance_private (self);
}
static void
ges_effect_asset_constructed (GObject * object)
{
_fill_track_type (GES_ASSET (object));
}
static void
ges_effect_asset_finalize (GObject * object)
{
/* TODO: Add deinitalization code here */
G_OBJECT_CLASS (ges_effect_asset_parent_class)->finalize (object);
}
static void
ges_effect_asset_class_init (GESEffectAssetClass * klass)
{
GObjectClass *object_class = G_OBJECT_CLASS (klass);
GESAssetClass *asset_class = GES_ASSET_CLASS (klass);
object_class->finalize = ges_effect_asset_finalize;
object_class->constructed = ges_effect_asset_constructed;
asset_class->extract = _extract;
}
gchar *
ges_effect_assect_id_get_type_and_bindesc (const char *id,
GESTrackType * track_type, GError ** error)
{
GList *tmp;
GstElement *effect;
gchar **typebin_desc = NULL;
gchar *bindesc = NULL;
*track_type = GES_TRACK_TYPE_UNKNOWN;
typebin_desc = g_strsplit (id, " ", 2);
if (!g_strcmp0 (typebin_desc[0], "audio")) {
*track_type = GES_TRACK_TYPE_AUDIO;
bindesc = g_strdup (typebin_desc[1]);
} else if (!g_strcmp0 (typebin_desc[0], "video")) {
*track_type = GES_TRACK_TYPE_VIDEO;
bindesc = g_strdup (typebin_desc[1]);
} else {
bindesc = g_strdup (id);
}
g_strfreev (typebin_desc);
effect = gst_parse_bin_from_description (bindesc, TRUE, error);
if (effect == NULL) {
g_free (bindesc);
GST_ERROR ("Could not create element from: %s", id);
return NULL;
}
if (*track_type != GES_TRACK_TYPE_UNKNOWN) {
gst_object_unref (effect);
return bindesc;
}
for (tmp = GST_BIN_CHILDREN (effect); tmp; tmp = tmp->next) {
GstElementFactory *factory =
gst_element_get_factory (GST_ELEMENT (tmp->data));
const gchar *klass =
gst_element_factory_get_metadata (factory, GST_ELEMENT_METADATA_KLASS);
if (g_strrstr (klass, "Effect") || g_strrstr (klass, "Filter")) {
if (g_strrstr (klass, "Audio")) {
*track_type = GES_TRACK_TYPE_AUDIO;
break;
} else if (g_strrstr (klass, "Video")) {
*track_type = GES_TRACK_TYPE_VIDEO;
break;
}
}
}
gst_object_unref (effect);
if (*track_type == GES_TRACK_TYPE_UNKNOWN) {
*track_type = GES_TRACK_TYPE_VIDEO;
GST_ERROR ("Could not determine track type for %s, defaulting to video",
id);
}
return bindesc;
}