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);
57 static void gst_pipeline_pads_autoplug(GstElement *src, GstElement *sink);
59 static GstBin *parent_class = NULL;
60 //static guint gst_pipeline_signals[LAST_SIGNAL] = { 0 };
63 gst_pipeline_get_type(void) {
64 static GtkType pipeline_type = 0;
67 static const GtkTypeInfo pipeline_info = {
70 sizeof(GstPipelineClass),
71 (GtkClassInitFunc)gst_pipeline_class_init,
72 (GtkObjectInitFunc)gst_pipeline_init,
75 (GtkClassInitFunc)NULL,
77 pipeline_type = gtk_type_unique(gst_bin_get_type(),&pipeline_info);
83 gst_pipeline_class_init(GstPipelineClass *klass) {
84 GstElementClass *gstelement_class;
86 gstelement_class = (GstElementClass*)klass;
88 parent_class = gtk_type_class(gst_bin_get_type());
90 gstelement_class->change_state = gst_pipeline_change_state;
93 static void gst_pipeline_init(GstPipeline *pipeline) {
99 * @name: name of new pipeline
101 * Create a new pipeline with the given name.
103 * Returns: newly created GstPipeline
105 GstElement *gst_pipeline_new(guchar *name) {
106 GstPipeline *pipeline;
108 pipeline = gtk_type_new(gst_pipeline_get_type());
109 gst_element_set_name(GST_ELEMENT(pipeline),name);
110 return GST_ELEMENT(pipeline);
113 static void gst_pipeline_prepare(GstPipeline *pipeline) {
114 g_print("GstPipeline: preparing pipeline \"%s\" for playing\n", gst_element_get_name(GST_ELEMENT(pipeline)));
117 static void gst_pipeline_have_type(GstSink *sink, GstSink *sink2, gpointer data) {
118 g_print("GstPipeline: pipeline have type %p\n", (gboolean *)data);
120 *(gboolean *)data = TRUE;
123 static guint16 gst_pipeline_typefind(GstPipeline *pipeline, GstElement *element) {
124 gboolean found = FALSE;
125 GstElement *typefind;
128 g_print("GstPipeline: typefind for element \"%s\" %p\n", gst_element_get_name(element), &found);
130 typefind = gst_elementfactory_make("typefind","typefind");
131 g_return_val_if_fail(typefind != NULL, FALSE);
133 gtk_signal_connect(GTK_OBJECT(typefind),"have_type",
134 GTK_SIGNAL_FUNC(gst_pipeline_have_type), &found);
136 gst_pad_connect(gst_element_get_pad(element,"src"),
137 gst_element_get_pad(typefind,"sink"));
139 gst_bin_add(GST_BIN(pipeline), typefind);
141 gst_bin_create_plan(GST_BIN(pipeline));
142 gst_element_set_state(GST_ELEMENT(element),GST_STATE_READY);
143 gst_element_set_state(GST_ELEMENT(element),GST_STATE_PLAYING);
146 gst_src_push(GST_SRC(element));
149 gst_element_set_state(GST_ELEMENT(element),GST_STATE_NULL);
152 type_id = gst_util_get_int_arg(GTK_OBJECT(typefind),"type");
155 gst_pad_set_type_id(gst_element_get_pad(element, "src"), type_id);
157 gst_pad_disconnect(gst_element_get_pad(element,"src"),
158 gst_element_get_pad(typefind,"sink"));
159 gst_bin_remove(GST_BIN(pipeline), typefind);
160 gst_object_unref(GST_OBJECT(typefind));
165 static void gst_pipeline_pads_autoplug_func(GstElement *src, GstPad *pad, GstElement *sink) {
169 g_print("gstpipeline: autoplug pad connect function type %d\n", pad->type);
171 sinkpads = gst_element_get_pad_list(sink);
173 sinkpad = (GstPad *)sinkpads->data;
175 // if we have a match, connect the pads
176 if (sinkpad->type == pad->type && sinkpad->direction == GST_PAD_SINK && !GST_PAD_CONNECTED(sinkpad)) {
177 gst_pad_connect(pad, sinkpad);
178 g_print("gstpipeline: autoconnect pad \"%s\" (%d) in element %s <-> ", pad->name, pad->type, gst_element_get_name(src));
179 g_print("pad \"%s\" (%d) in element %s\n", sinkpad->name, sinkpad->type, gst_element_get_name(sink));
182 sinkpads = g_list_next(sinkpads);
186 static void gst_pipeline_pads_autoplug(GstElement *src, GstElement *sink) {
187 GList *srcpads, *sinkpads;
188 gboolean connected = FALSE;
190 srcpads = gst_element_get_pad_list(src);
193 GstPad *srcpad = (GstPad *)srcpads->data;
196 if (srcpad->direction == GST_PAD_SRC && !GST_PAD_CONNECTED(srcpad)) {
198 sinkpads = gst_element_get_pad_list(sink);
199 // FIXME could O(n) if the types were sorted...
201 sinkpad = (GstPad *)sinkpads->data;
203 // if we have a match, connect the pads
204 if (sinkpad->type == srcpad->type && sinkpad->direction == GST_PAD_SINK && !GST_PAD_CONNECTED(sinkpad)) {
205 gst_pad_connect(srcpad, sinkpad);
206 g_print("gstpipeline: autoconnect pad \"%s\" (%d) in element %s <-> ", srcpad->name, srcpad->type, gst_element_get_name(src));
207 g_print("pad \"%s\" (%d) in element %s\n", sinkpad->name, sinkpad->type, gst_element_get_name(sink));
211 sinkpads = g_list_next(sinkpads);
214 srcpads = g_list_next(srcpads);
219 g_print("gstpipeline: delaying pad connections\n");
220 gtk_signal_connect(GTK_OBJECT(src),"new_pad",
221 GTK_SIGNAL_FUNC(gst_pipeline_pads_autoplug_func), sink);
226 * gst_pipeline_autoplug:
227 * @pipeline: the pipeline to autoplug
229 * Constructs a complete pipeline by automatically
230 * detecting the plugins needed.
232 * Returns: a gboolean indicating success or failure.
234 gboolean gst_pipeline_autoplug(GstPipeline *pipeline) {
236 GstElement *element, *srcelement = NULL, *sinkelement= NULL;
238 GstElementFactory *factory;
239 GList *src_types, *sink_types;
240 guint16 src_type = 0, sink_type = 0;
241 gboolean complete = FALSE;
243 g_return_val_if_fail(GST_IS_PIPELINE(pipeline), FALSE);
245 g_print("GstPipeline: autopluging pipeline \"%s\"\n", gst_element_get_name(GST_ELEMENT(pipeline)));
247 elements = gst_bin_get_list(GST_BIN(pipeline));
249 // fase 1, find all the sinks and sources... FIXME need better way to do this...
251 element = GST_ELEMENT(elements->data);
253 if (GST_IS_SINK(element)) {
254 g_print("GstPipeline: found sink \"%s\"\n", gst_element_get_name(element));
257 g_print("GstPipeline: multiple sinks detected, can't autoplug pipeline \"%s\"\n", gst_element_get_name(GST_ELEMENT(pipeline)));
260 sinkelement = element;
261 factory = gst_element_get_factory(element);
263 sink_types = factory->sink_types;
264 if (sink_types == NULL) {
265 g_print("GstPipeline: sink \"%s\" has no MIME type, can't autoplug \n", gst_element_get_name(element));
269 sink_type = GPOINTER_TO_UINT(sink_types->data);
270 g_print("GstPipeline: sink \"%s\" has MIME type %d \n", gst_element_get_name(element), sink_type);
273 else if (GST_IS_SRC(element)) {
274 g_print("GstPipeline: found source \"%s\"\n", gst_element_get_name(element));
277 g_print("GstPipeline: multiple sources detected, can't autoplug pipeline \"%s\"\n", gst_element_get_name(GST_ELEMENT(pipeline)));
281 srcelement = element;
283 factory = gst_element_get_factory(element);
285 src_types = factory->src_types;
286 if (src_types == NULL) {
287 g_print("GstPipeline: source \"%s\" has no MIME type, running typefind...\n", gst_element_get_name(element));
289 src_type = gst_pipeline_typefind(pipeline, element);
292 g_print("GstPipeline: source \"%s\" type found %d\n", gst_element_get_name(element), src_type);
295 g_print("GstPipeline: source \"%s\" has no type\n", gst_element_get_name(element));
301 src_types = g_list_next(src_types);
306 g_print("GstPipeline: found invalid element \"%s\", not source or sink\n", gst_element_get_name(element));
309 elements = g_list_next(elements);
312 factories = gst_type_get_sink_to_src(src_type, sink_type);
315 // fase 2: find elements to form a pad
317 factory = (GstElementFactory *)(factories->data);
319 g_print("GstPipeline: factory \"%s\"\n", factory->name);
321 element = gst_elementfactory_create(factory, factory->name);
322 gst_bin_add(GST_BIN(pipeline), element);
324 gst_pipeline_pads_autoplug(srcelement, element);
326 srcelement = element;
328 factories = g_list_next(factories);
334 gst_pipeline_pads_autoplug(srcelement, sinkelement);
338 g_print("GstPipeline: unable to autoplug pipeline \"%s\"\n", gst_element_get_name(GST_ELEMENT(pipeline)));
342 static GstElementStateReturn gst_pipeline_change_state(GstElement *element) {
343 GstPipeline *pipeline;
345 g_return_val_if_fail(GST_IS_PIPELINE(element), FALSE);
346 pipeline = GST_PIPELINE(element);
349 switch (GST_STATE_PENDING(pipeline)) {
350 case GST_STATE_READY:
351 // we need to set up internal state
352 gst_pipeline_prepare(pipeline);
358 if (GST_ELEMENT_CLASS(parent_class)->change_state)
359 return GST_ELEMENT_CLASS(parent_class)->change_state(element);
360 return GST_STATE_SUCCESS;
365 * gst_pipeline_iterate:
366 * @pipeline: GstPipeline to iterate
368 * Cause the pipeline's contents to be run through one full 'iteration'.
370 void gst_pipeline_iterate(GstPipeline *pipeline) {
371 g_return_if_fail(pipeline != NULL);
372 g_return_if_fail(GST_IS_PIPELINE(pipeline));