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207 lines
5.8 KiB
C
207 lines
5.8 KiB
C
/* GStreamer Editing Services
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* Copyright (C) 2009 Edward Hervey <edward.hervey@collabora.co.uk>
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* 2009 Nokia Corporation
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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:gesimagesource
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* @title: GESImageSource
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* @short_description: outputs the video stream from a media file as a still
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* image.
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*
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* Outputs the video stream from a given file as a still frame. The frame chosen
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* will be determined by the in-point property on the track element. For image
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* files, do not set the in-point property.
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*
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* Deprecated: 1.18: This won't be used anymore and has been replaced by
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* #GESUriSource instead which now plugs an `imagefreeze` element when
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* #ges_uri_source_asset_is_image returns %TRUE.
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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 "ges-internal.h"
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#include "ges-track-element.h"
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#include "ges-image-source.h"
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struct _GESImageSourcePrivate
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{
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/* Dummy variable */
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void *nothing;
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};
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enum
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{
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PROP_0,
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PROP_URI
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};
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G_DEFINE_TYPE_WITH_PRIVATE (GESImageSource, ges_image_source,
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GES_TYPE_VIDEO_SOURCE);
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static void
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ges_image_source_get_property (GObject * object, guint property_id,
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GValue * value, GParamSpec * pspec)
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{
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GESImageSource *uriclip = GES_IMAGE_SOURCE (object);
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switch (property_id) {
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case PROP_URI:
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g_value_set_string (value, uriclip->uri);
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break;
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default:
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G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
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}
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}
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static void
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ges_image_source_set_property (GObject * object, guint property_id,
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const GValue * value, GParamSpec * pspec)
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{
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GESImageSource *uriclip = GES_IMAGE_SOURCE (object);
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switch (property_id) {
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case PROP_URI:
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uriclip->uri = g_value_dup_string (value);
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break;
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default:
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G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
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}
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}
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static void
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ges_image_source_dispose (GObject * object)
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{
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GESImageSource *uriclip = GES_IMAGE_SOURCE (object);
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if (uriclip->uri)
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g_free (uriclip->uri);
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G_OBJECT_CLASS (ges_image_source_parent_class)->dispose (object);
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}
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static void
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pad_added_cb (GstElement * source, GstPad * pad, GstElement * scale)
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{
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GstPad *sinkpad;
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GstPadLinkReturn ret;
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sinkpad = gst_element_get_static_pad (scale, "sink");
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if (sinkpad) {
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GST_DEBUG ("got sink pad, trying to link");
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ret = gst_pad_link (pad, sinkpad);
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gst_object_unref (sinkpad);
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if (GST_PAD_LINK_SUCCESSFUL (ret)) {
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GST_DEBUG ("linked ok, returning");
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return;
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}
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}
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GST_DEBUG ("pad failed to link properly");
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}
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static GstElement *
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ges_image_source_create_source (GESSource * source)
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{
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GstElement *bin, *src, *scale, *freeze, *iconv;
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GstPad *srcpad, *target;
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bin = GST_ELEMENT (gst_bin_new ("still-image-bin"));
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src = gst_element_factory_make ("uridecodebin", NULL);
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scale = gst_element_factory_make ("videoscale", NULL);
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freeze = gst_element_factory_make ("imagefreeze", NULL);
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iconv = gst_element_factory_make ("videoconvert", NULL);
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g_object_set (scale, "add-borders", TRUE, NULL);
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gst_bin_add_many (GST_BIN (bin), src, scale, freeze, iconv, NULL);
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gst_element_link_pads_full (scale, "src", iconv, "sink",
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GST_PAD_LINK_CHECK_NOTHING);
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gst_element_link_pads_full (iconv, "src", freeze, "sink",
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GST_PAD_LINK_CHECK_NOTHING);
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/* FIXME: add capsfilter here with sink caps (see 626518) */
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target = gst_element_get_static_pad (freeze, "src");
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srcpad = gst_ghost_pad_new ("src", target);
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gst_element_add_pad (bin, srcpad);
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gst_object_unref (target);
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g_object_set (src, "uri", ((GESImageSource *) source)->uri, NULL);
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g_signal_connect (G_OBJECT (src), "pad-added",
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G_CALLBACK (pad_added_cb), scale);
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return bin;
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}
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static void
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ges_image_source_class_init (GESImageSourceClass * klass)
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{
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GObjectClass *object_class = G_OBJECT_CLASS (klass);
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GESSourceClass *source_class = GES_SOURCE_CLASS (klass);
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GESVideoSourceClass *vsource_class = GES_VIDEO_SOURCE_CLASS (klass);
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object_class->get_property = ges_image_source_get_property;
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object_class->set_property = ges_image_source_set_property;
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object_class->dispose = ges_image_source_dispose;
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/**
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* GESImageSource:uri:
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*
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* The location of the file/resource to use.
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*/
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g_object_class_install_property (object_class, PROP_URI,
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g_param_spec_string ("uri", "URI", "uri of the resource",
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NULL, G_PARAM_READWRITE | G_PARAM_CONSTRUCT_ONLY));
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source_class->create_source = ges_image_source_create_source;
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vsource_class->ABI.abi.get_natural_size =
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ges_video_uri_source_get_natural_size;
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GES_TRACK_ELEMENT_CLASS_DEFAULT_HAS_INTERNAL_SOURCE (klass) = FALSE;
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}
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static void
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ges_image_source_init (GESImageSource * self)
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{
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self->priv = ges_image_source_get_instance_private (self);
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}
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/* @uri: the URI the source should control
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*
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* Creates a new #GESImageSource for the provided @uri.
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*
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* Returns: (transfer floating): A new #GESImageSource.
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*/
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GESImageSource *
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ges_image_source_new (gchar * uri)
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{
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GESImageSource *res;
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GESAsset *asset = ges_asset_request (GES_TYPE_IMAGE_SOURCE, uri, NULL);
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res = GES_IMAGE_SOURCE (ges_asset_extract (asset, NULL));
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res->uri = g_strdup (uri);
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gst_object_unref (asset);
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return res;
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}
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