2 * Copyright (C) <1999> Erik Walthinsen <omega@cse.ogi.edu>
4 * This library is free software; you can redistribute it and/or
5 * modify it under the terms of the GNU Library General Public
6 * License as published by the Free Software Foundation; either
7 * version 2 of the License, or (at your option) any later version.
9 * This library is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 * Library General Public License for more details.
14 * You should have received a copy of the GNU Library General Public
15 * License along with this library; if not, write to the
16 * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
17 * Boston, MA 02111-1307, USA.
20 #include <gst/gstpipeline.h>
21 #include <gst/gstsink.h>
22 #include <gst/gstutils.h>
23 #include <gst/gsttype.h>
27 GstElementDetails gst_pipeline_details = {
30 "Complete pipeline object",
32 "Erik Walthinsen <omega@cse.ogi.edu>",
37 /* Pipeline signals and args */
49 static void gst_pipeline_class_init(GstPipelineClass *klass);
50 static void gst_pipeline_init(GstPipeline *pipeline);
52 static GstElementStateReturn gst_pipeline_change_state(GstElement *element);
54 static void gst_pipeline_prepare(GstPipeline *pipeline);
56 static void gst_pipeline_have_type(GstSink *sink, GstSink *sink2, gpointer data);
58 static GstBin *parent_class = NULL;
59 //static guint gst_pipeline_signals[LAST_SIGNAL] = { 0 };
62 gst_pipeline_get_type(void) {
63 static GtkType pipeline_type = 0;
66 static const GtkTypeInfo pipeline_info = {
69 sizeof(GstPipelineClass),
70 (GtkClassInitFunc)gst_pipeline_class_init,
71 (GtkObjectInitFunc)gst_pipeline_init,
74 (GtkClassInitFunc)NULL,
76 pipeline_type = gtk_type_unique(gst_bin_get_type(),&pipeline_info);
82 gst_pipeline_class_init(GstPipelineClass *klass) {
83 GstElementClass *gstelement_class;
85 gstelement_class = (GstElementClass*)klass;
87 parent_class = gtk_type_class(gst_bin_get_type());
89 gstelement_class->change_state = gst_pipeline_change_state;
92 static void gst_pipeline_init(GstPipeline *pipeline) {
98 * @name: name of new pipeline
100 * Create a new pipeline with the given name.
102 * Returns: newly created GstPipeline
104 GstPipeline *gst_pipeline_new(guchar *name) {
105 GstPipeline *pipeline;
107 pipeline = gtk_type_new(gst_pipeline_get_type());
108 gst_element_set_name(GST_ELEMENT(pipeline),name);
112 static void gst_pipeline_prepare(GstPipeline *pipeline) {
113 g_print("GstPipeline: preparing pipeline \"%s\" for playing\n", gst_element_get_name(GST_ELEMENT(pipeline)));
116 static void gst_pipeline_have_type(GstSink *sink, GstSink *sink2, gpointer data) {
117 g_print("GstPipeline: pipeline have type %p\n", (gboolean *)data);
119 *(gboolean *)data = TRUE;
122 static guint16 gst_pipeline_typefind(GstPipeline *pipeline, GstElement *element) {
123 gboolean found = FALSE;
124 GstElement *typefind;
127 g_print("GstPipeline: typefind for element \"%s\" %p\n", gst_element_get_name(element), &found);
129 typefind = gst_elementfactory_make("typefind","typefind");
130 g_return_val_if_fail(typefind != NULL, FALSE);
132 gtk_signal_connect(GTK_OBJECT(typefind),"have_type",
133 GTK_SIGNAL_FUNC(gst_pipeline_have_type), &found);
135 gst_pad_connect(gst_element_get_pad(element,"src"),
136 gst_element_get_pad(typefind,"sink"));
138 gst_bin_add(GST_BIN(pipeline), typefind);
140 gst_bin_create_plan(GST_BIN(pipeline));
141 gst_element_set_state(GST_ELEMENT(element),GST_STATE_READY);
142 gst_element_set_state(GST_ELEMENT(element),GST_STATE_PLAYING);
145 gst_src_push(GST_SRC(element));
148 gst_element_set_state(GST_ELEMENT(element),GST_STATE_NULL);
151 type_id = gst_util_get_int_arg(GTK_OBJECT(typefind),"type");
154 gst_pad_set_type_id(gst_element_get_pad(element, "src"), type_id);
156 gst_pad_disconnect(gst_element_get_pad(element,"src"),
157 gst_element_get_pad(typefind,"sink"));
158 gst_bin_remove(GST_BIN(pipeline), typefind);
163 gboolean gst_pipeline_autoplug(GstPipeline *pipeline) {
165 GstElement *element, *srcelement, *sinkelement;
167 GstElementFactory *factory;
168 GList *src_types, *sink_types;
169 guint16 src_type = 0, sink_type = 0;
170 gboolean complete = FALSE;
172 g_return_val_if_fail(GST_IS_PIPELINE(pipeline), FALSE);
174 g_print("GstPipeline: autopluging pipeline \"%s\"\n", gst_element_get_name(GST_ELEMENT(pipeline)));
176 elements = gst_bin_get_list(GST_BIN(pipeline));
178 // fase 1, find all the sinks and sources...
180 element = GST_ELEMENT(elements->data);
182 if (GST_IS_SINK(element)) {
183 g_print("GstPipeline: found sink \"%s\"\n", gst_element_get_name(element));
186 g_print("GstPipeline: multiple sinks detected, can't autoplug pipeline \"%s\"\n", gst_element_get_name(GST_ELEMENT(pipeline)));
189 sinkelement = element;
190 factory = gst_element_get_factory(element);
192 sink_types = factory->sink_types;
193 if (sink_types == NULL) {
194 g_print("GstPipeline: sink \"%s\" has no MIME type, can't autoplug \n", gst_element_get_name(element));
198 sink_type = GPOINTER_TO_UINT(sink_types->data);
199 g_print("GstPipeline: sink \"%s\" has MIME type %d \n", gst_element_get_name(element), sink_type);
202 else if (GST_IS_SRC(element)) {
203 g_print("GstPipeline: found source \"%s\"\n", gst_element_get_name(element));
206 g_print("GstPipeline: multiple sources detected, can't autoplug pipeline \"%s\"\n", gst_element_get_name(GST_ELEMENT(pipeline)));
210 srcelement = element;
212 factory = gst_element_get_factory(element);
214 src_types = factory->src_types;
215 if (src_types == NULL) {
216 g_print("GstPipeline: source \"%s\" has no MIME type, running typefind...\n", gst_element_get_name(element));
218 src_type = gst_pipeline_typefind(pipeline, element);
221 g_print("GstPipeline: source \"%s\" type found %d\n", gst_element_get_name(element), src_type);
224 g_print("GstPipeline: source \"%s\" has no type\n", gst_element_get_name(element));
230 src_types = g_list_next(src_types);
235 g_print("GstPipeline: found invalid element \"%s\", not source or sink\n", gst_element_get_name(element));
238 elements = g_list_next(elements);
241 factories = gst_type_get_sink_to_src(src_type, sink_type);
244 // fase 2: find elements to form a pad
246 factory = (GstElementFactory *)(factories->data);
248 g_print("GstPipeline: factory \"%s\"\n", factory->name);
250 element = gst_elementfactory_create(factory, factory->name);
251 gst_bin_add(GST_BIN(pipeline), element);
253 // FIXME match paths to connect with MIME types instead
255 gst_pad_connect(gst_element_get_pad(srcelement,"src"),
256 gst_element_get_pad(element,"sink"));
258 srcelement = element;
260 factories = g_list_next(factories);
266 gst_pad_connect(gst_element_get_pad(srcelement,"src"),
267 gst_element_get_pad(sinkelement,"sink"));
271 g_print("GstPipeline: unable to autoplug pipeline \"%s\"\n", gst_element_get_name(GST_ELEMENT(pipeline)));
275 static GstElementStateReturn gst_pipeline_change_state(GstElement *element) {
276 GstPipeline *pipeline;
278 g_return_val_if_fail(GST_IS_PIPELINE(element), FALSE);
279 pipeline = GST_PIPELINE(element);
282 switch (GST_STATE_PENDING(pipeline)) {
283 case GST_STATE_READY:
284 // we need to set up internal state
285 g_print("preparing pipeline \"%s\" for iterations:\n",
286 gst_element_get_name(GST_ELEMENT(element)));
287 gst_pipeline_prepare(pipeline);
293 if (GST_ELEMENT_CLASS(parent_class)->change_state)
294 return GST_ELEMENT_CLASS(parent_class)->change_state(element);
295 return GST_STATE_SUCCESS;
300 * gst_pipeline_iterate:
301 * @pipeline: GstPipeline to iterate
303 * Cause the pipeline's contents to be run through one full 'iteration'.
305 void gst_pipeline_iterate(GstPipeline *pipeline) {
306 g_return_if_fail(pipeline != NULL);
307 g_return_if_fail(GST_IS_PIPELINE(pipeline));