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64a740ad9b
Original commit message from CVS: Move a step closer to autoplugging. The element selection in the pipeline works. Slight modification to the typefind function handling. removed the stupid mime types in the mpeg decoders. Adjust videosink for the new caps handling. Modified the queue example to show an error in plan creation; Erik can you solve this? This is the type of pipelines autoplugging uses.
166 lines
3.6 KiB
C
166 lines
3.6 KiB
C
/* Gnome-Streamer
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* Copyright (C) <1999> Erik Walthinsen <omega@cse.ogi.edu>
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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., 59 Temple Place - Suite 330,
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* Boston, MA 02111-1307, USA.
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*/
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//#define DEBUG_ENABLED
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#include "gstcaps.h"
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#include "gsttype.h"
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void
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_gst_caps_initialize (void)
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{
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}
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static guint16
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get_type_for_mime (gchar *mime)
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{
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guint16 typeid;
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typeid = gst_type_find_by_mime (mime);
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if (typeid == 0) {
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GstTypeFactory *factory = g_new0 (GstTypeFactory, 1);
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factory->mime = g_strdup (mime);
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factory->exts = NULL;
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factory->typefindfunc = NULL;
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typeid = gst_type_register (factory);
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}
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return typeid;
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}
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/**
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* gst_caps_new:
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* @mime: the mime type to attach to the capability
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*
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* create a new capability with the given mime type
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*
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* Returns: a new capability
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*/
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GstCaps*
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gst_caps_new (gchar *mime)
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{
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GstCaps *caps;
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g_return_val_if_fail (mime != NULL, NULL);
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caps = g_new0 (GstCaps, 1);
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caps->id = get_type_for_mime (mime);
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return caps;
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}
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/**
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* gst_caps_register:
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* @factory: the factory to register
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*
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* Register the factory.
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*
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* Returns: The registered capability
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*/
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GstCaps*
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gst_caps_register (GstCapsFactory *factory)
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{
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GstCapsFactoryEntry tag;
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gint i = 0;
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guint16 typeid;
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GstCaps *caps;
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g_return_val_if_fail (factory != NULL, NULL);
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tag = (*factory)[i++];
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g_return_val_if_fail (tag != NULL, NULL);
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typeid = get_type_for_mime ((gchar *)tag);
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caps = g_new0 (GstCaps, 1);
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g_return_val_if_fail (caps != NULL, NULL);
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caps->id = typeid;
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caps->properties = gst_props_register (&(*factory)[i]);
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return caps;
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}
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/**
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* gst_caps_check_compatibility:
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* @fromcaps: a capabilty
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* @tocaps: a capabilty
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*
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* Checks whether two capabilities are compatible
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*
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* Returns: true if compatible, false otherwise
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*/
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gboolean
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gst_caps_check_compatibility (GstCaps *fromcaps, GstCaps *tocaps)
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{
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g_return_val_if_fail (fromcaps != NULL, FALSE);
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g_return_val_if_fail (tocaps != NULL, FALSE);
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if (fromcaps->id != tocaps->id)
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return FALSE;
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if (fromcaps->properties && tocaps->properties) {
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return gst_props_check_compatibility (fromcaps->properties, tocaps->properties);
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}
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else return TRUE;
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}
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xmlNodePtr
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gst_caps_save_thyself (GstCaps *caps, xmlNodePtr parent)
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{
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xmlNodePtr subtree;
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g_return_val_if_fail (caps != NULL, NULL);
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xmlNewChild (parent, NULL, "type", gst_type_find_by_id (caps->id)->mime);
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if (caps->properties) {
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subtree = xmlNewChild (parent, NULL, "properties", NULL);
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gst_props_save_thyself (caps->properties, subtree);
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}
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return parent;
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}
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GstCaps*
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gst_caps_load_thyself (xmlNodePtr parent)
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{
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GstCaps *caps = g_new0 (GstCaps, 1);
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xmlNodePtr field = parent->childs;
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while (field) {
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if (!strcmp (field->name, "type")) {
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caps->id = get_type_for_mime (xmlNodeGetContent (field));
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}
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else if (!strcmp (field->name, "properties")) {
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caps->properties = gst_props_load_thyself (field);
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}
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field = field->next;
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}
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return caps;
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}
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