2 * Copyright (C) 2007 Stefan Kost <ensonic@users.sf.net>
4 * gstdebugutils.c: debugging and analysis utillities
6 * This library is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU Library General Public
8 * License as published by the Free Software Foundation; either
9 * version 2 of the License, or (at your option) any later version.
11 * This library is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 * Library General Public License for more details.
16 * You should have received a copy of the GNU Library General Public
17 * License along with this library; if not, write to the
18 * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
19 * Boston, MA 02111-1307, USA.
22 * edge [ constraint=false ];
24 * does not create spacial dependency
25 * node [ margin="0.02,0.01" ];
26 * space surrounding the label
29 #include "gst_private.h"
30 #include "gstdebugutils.h"
32 #ifndef GST_DISABLE_GST_DEBUG
41 #include "gstobject.h"
42 #include "gstghostpad.h"
46 /*** PIPELINE GRAPHS **********************************************************/
48 const gchar *priv_gst_dump_dot_dir; /* NULL *//* set from gst.c */
50 extern GstClockTime _priv_gst_info_start_time;
53 debug_dump_make_object_name (GstObject * element)
55 return g_strcanon (g_strdup_printf ("%s_%p", GST_OBJECT_NAME (element),
56 element), G_CSET_A_2_Z G_CSET_a_2_z G_CSET_DIGITS "_", '_');
60 debug_dump_get_element_state (GstElement * element)
62 gchar *state_name = NULL;
63 const gchar *state_icons = "~0-=>";
64 GstState state = 0, pending = 0;
66 gst_element_get_state (element, &state, &pending, 0);
67 if (pending == GST_STATE_VOID_PENDING) {
68 state_name = g_strdup_printf ("\\n[%c]", state_icons[state]);
70 state_name = g_strdup_printf ("\\n[%c]->[%c]", state_icons[state],
71 state_icons[pending]);
77 debug_dump_get_element_params (GstElement * element)
79 gchar *param_name = NULL;
80 GParamSpec **properties, *property;
81 GValue value = { 0, };
82 guint i, number_of_properties;
83 gchar *tmp, *value_str;
85 /* get paramspecs and show non-default properties */
87 g_object_class_list_properties (G_OBJECT_CLASS (GST_ELEMENT_GET_CLASS
88 (element)), &number_of_properties);
90 for (i = 0; i < number_of_properties; i++) {
91 property = properties[i];
93 /* ski some properties */
94 if (!(property->flags & G_PARAM_READABLE))
96 if (!strcmp (property->name, "name"))
99 g_value_init (&value, property->value_type);
100 g_object_get_property (G_OBJECT (element), property->name, &value);
101 if (!(g_param_value_defaults (property, &value))) {
102 tmp = g_strdup_value_contents (&value);
103 value_str = g_strescape (tmp, NULL);
107 param_name = g_strdup_printf ("%s\\n%s=%s",
108 tmp, property->name, value_str);
111 param_name = g_strdup_printf ("\\n%s=%s", property->name, value_str);
115 g_value_unset (&value);
123 debug_dump_element_pad (GstPad * pad, GstElement * element,
124 GstDebugGraphDetails details, FILE * out, const gint indent)
126 GstElement *target_element;
127 GstPad *target_pad, *tmp_pad;
129 guint src_pads, sink_pads;
130 gchar *pad_name, *element_name;
131 gchar *target_pad_name, *target_element_name;
135 spc = g_malloc (1 + indent * 2);
136 memset (spc, 32, indent * 2);
137 spc[indent * 2] = '\0';
139 dir = gst_pad_get_direction (pad);
140 pad_name = debug_dump_make_object_name (GST_OBJECT (pad));
141 element_name = debug_dump_make_object_name (GST_OBJECT (element));
142 if (GST_IS_GHOST_PAD (pad)) {
144 (dir == GST_PAD_SRC) ? "#ffdddd" : ((dir ==
145 GST_PAD_SINK) ? "#ddddff" : "#ffffff");
146 /* output target-pad so that it belongs to this element */
147 if ((tmp_pad = gst_ghost_pad_get_target (GST_GHOST_PAD (pad)))) {
148 if ((target_pad = gst_pad_get_peer (tmp_pad))) {
149 target_pad_name = debug_dump_make_object_name (GST_OBJECT (target_pad));
150 if ((target_element = gst_pad_get_parent_element (target_pad))) {
151 target_element_name =
152 debug_dump_make_object_name (GST_OBJECT (target_element));
154 target_element_name = "";
157 "%s %s_%s [color=black, fillcolor=\"%s\", label=\"%s\"];\n",
158 spc, target_element_name, target_pad_name, color_name,
159 GST_OBJECT_NAME (target_pad));
160 g_free (target_pad_name);
161 if (target_element) {
162 g_free (target_element_name);
163 gst_object_unref (target_element);
165 gst_object_unref (target_pad);
167 gst_object_unref (tmp_pad);
171 (dir == GST_PAD_SRC) ? "#ffaaaa" : ((dir ==
172 GST_PAD_SINK) ? "#aaaaff" : "#cccccc");
176 "%s %s_%s [color=black, fillcolor=\"%s\", label=\"%s\"];\n",
177 spc, element_name, pad_name, color_name, GST_OBJECT_NAME (pad));
179 if (dir == GST_PAD_SRC)
181 else if (dir == GST_PAD_SINK)
184 g_free (element_name);
189 debug_dump_element_pad_link (GstPad * pad, GstElement * element,
190 GstDebugGraphDetails details, FILE * out, const gint indent)
192 GstElement *peer_element, *target_element;
193 GstPad *peer_pad, *target_pad, *tmp_pad;
195 GstStructure *structure;
196 gboolean free_caps, free_media;
198 gchar *pad_name, *element_name;
199 gchar *peer_pad_name, *peer_element_name;
200 gchar *target_pad_name, *target_element_name;
203 spc = g_malloc (1 + indent * 2);
204 memset (spc, 32, indent * 2);
205 spc[indent * 2] = '\0';
207 if ((peer_pad = gst_pad_get_peer (pad))) {
209 if ((details & GST_DEBUG_GRAPH_SHOW_MEDIA_TYPE) ||
210 (details & GST_DEBUG_GRAPH_SHOW_CAPS_DETAILS)
212 if ((caps = gst_pad_get_negotiated_caps (pad))) {
216 if (!(caps = (GstCaps *)
217 gst_pad_get_pad_template_caps (pad))) {
218 /* this should not happen */
223 if (details & GST_DEBUG_GRAPH_SHOW_CAPS_DETAILS) {
224 gchar *tmp = g_strdelimit (gst_caps_to_string (caps), ",",
227 media = g_strescape (tmp, NULL);
231 if (GST_CAPS_IS_SIMPLE (caps)) {
232 structure = gst_caps_get_structure (caps, 0);
233 media = (gchar *) gst_structure_get_name (structure);
238 gst_caps_unref (caps);
243 pad_name = debug_dump_make_object_name (GST_OBJECT (pad));
245 element_name = debug_dump_make_object_name (GST_OBJECT (element));
249 peer_pad_name = debug_dump_make_object_name (GST_OBJECT (peer_pad));
250 if ((peer_element = gst_pad_get_parent_element (peer_pad))) {
252 debug_dump_make_object_name (GST_OBJECT (peer_element));
254 peer_element_name = "";
257 if (GST_IS_GHOST_PAD (pad)) {
258 if ((tmp_pad = gst_ghost_pad_get_target (GST_GHOST_PAD (pad)))) {
259 if ((target_pad = gst_pad_get_peer (tmp_pad))) {
261 debug_dump_make_object_name (GST_OBJECT (target_pad));
262 if ((target_element = gst_pad_get_parent_element (target_pad))) {
263 target_element_name =
264 debug_dump_make_object_name (GST_OBJECT (target_element));
266 target_element_name = "";
268 /* src ghostpad relationship */
269 fprintf (out, "%s%s_%s -> %s_%s [style=dashed]\n", spc,
270 target_element_name, target_pad_name, element_name, pad_name);
272 g_free (target_pad_name);
273 if (target_element) {
274 g_free (target_element_name);
275 gst_object_unref (target_element);
277 gst_object_unref (target_pad);
279 gst_object_unref (tmp_pad);
282 if (GST_IS_GHOST_PAD (peer_pad)) {
283 if ((tmp_pad = gst_ghost_pad_get_target (GST_GHOST_PAD (peer_pad)))) {
284 if ((target_pad = gst_pad_get_peer (tmp_pad))) {
286 debug_dump_make_object_name (GST_OBJECT (target_pad));
287 if ((target_element = gst_pad_get_parent_element (target_pad))) {
288 target_element_name =
289 debug_dump_make_object_name (GST_OBJECT (target_element));
291 target_element_name = "";
293 /* sink ghostpad relationship */
294 fprintf (out, "%s%s_%s -> %s_%s [style=dashed]\n", spc,
295 peer_element_name, peer_pad_name,
296 target_element_name, target_pad_name);
297 /* FIXME: we are missing links from the proxy pad
298 * theoretically we need to:
299 * pad=gst_object_ref(target_pad);
300 * goto line 280: if ((peer_pad = gst_pad_get_peer (pad)))
301 * as this would e ugly we need to refactor ...
303 debug_dump_element_pad_link (target_pad, target_element, details, out,
305 g_free (target_pad_name);
306 if (target_element) {
307 g_free (target_element_name);
308 gst_object_unref (target_element);
310 gst_object_unref (target_pad);
312 gst_object_unref (tmp_pad);
318 fprintf (out, "%s%s_%s -> %s_%s [label=\"%s\"]\n", spc,
319 element_name, pad_name, peer_element_name, peer_pad_name, media);
324 fprintf (out, "%s%s_%s -> %s_%s\n", spc,
325 element_name, pad_name, peer_element_name, peer_pad_name);
330 g_free (element_name);
332 g_free (peer_pad_name);
334 g_free (peer_element_name);
335 gst_object_unref (peer_element);
337 gst_object_unref (peer_pad);
342 * debug_dump_element:
343 * @bin: the bin that should be analyzed
344 * @out: file to write to
345 * @indent: level of graph indentation
347 * Helper for _gst_debug_bin_to_dot_file() to recursively dump a pipeline.
350 debug_dump_element (GstBin * bin, GstDebugGraphDetails details, FILE * out,
353 GstIterator *element_iter, *pad_iter;
354 gboolean elements_done, pads_done;
358 guint src_pads, sink_pads;
360 gchar *state_name = NULL;
361 gchar *param_name = NULL;
364 spc = g_malloc (1 + indent * 2);
365 memset (spc, 32, indent * 2);
366 spc[indent * 2] = '\0';
368 element_iter = gst_bin_iterate_elements (bin);
369 elements_done = FALSE;
370 while (!elements_done) {
371 switch (gst_iterator_next (element_iter, (gpointer) & element)) {
372 case GST_ITERATOR_OK:
373 element_name = debug_dump_make_object_name (GST_OBJECT (element));
375 if (details & GST_DEBUG_GRAPH_SHOW_STATES) {
376 state_name = debug_dump_get_element_state (GST_ELEMENT (element));
378 if (details & GST_DEBUG_GRAPH_SHOW_NON_DEFAULT_PARAMS) {
379 param_name = debug_dump_get_element_params (GST_ELEMENT (element));
382 fprintf (out, "%ssubgraph cluster_%s {\n", spc, element_name);
383 fprintf (out, "%s fontname=\"Bitstream Vera Sans\";\n", spc);
384 fprintf (out, "%s fontsize=\"8\";\n", spc);
385 fprintf (out, "%s style=filled;\n", spc);
386 fprintf (out, "%s color=black;\n\n", spc);
387 fprintf (out, "%s label=\"<%s>\\n%s%s%s\";\n", spc,
388 G_OBJECT_TYPE_NAME (element), GST_OBJECT_NAME (element),
389 (state_name ? state_name : ""), (param_name ? param_name : "")
399 g_free (element_name);
401 src_pads = sink_pads = 0;
402 if ((pad_iter = gst_element_iterate_pads (element))) {
405 switch (gst_iterator_next (pad_iter, (gpointer) & pad)) {
406 case GST_ITERATOR_OK:
407 debug_dump_element_pad (pad, element, details, out, indent);
408 dir = gst_pad_get_direction (pad);
409 if (dir == GST_PAD_SRC)
411 else if (dir == GST_PAD_SINK)
413 gst_object_unref (pad);
415 case GST_ITERATOR_RESYNC:
416 gst_iterator_resync (pad_iter);
418 case GST_ITERATOR_ERROR:
419 case GST_ITERATOR_DONE:
424 gst_iterator_free (pad_iter);
426 if (GST_IS_BIN (element)) {
427 fprintf (out, "%s fillcolor=\"#ffffff\";\n", spc);
429 debug_dump_element (GST_BIN (element), details, out, indent + 1);
431 if (src_pads && !sink_pads)
432 fprintf (out, "%s fillcolor=\"#ffaaaa\";\n", spc);
433 else if (!src_pads && sink_pads)
434 fprintf (out, "%s fillcolor=\"#aaaaff\";\n", spc);
435 else if (src_pads && sink_pads)
436 fprintf (out, "%s fillcolor=\"#aaffaa\";\n", spc);
438 fprintf (out, "%s fillcolor=\"#ffffff\";\n", spc);
440 fprintf (out, "%s}\n\n", spc);
441 if ((pad_iter = gst_element_iterate_pads (element))) {
444 switch (gst_iterator_next (pad_iter, (gpointer) & pad)) {
445 case GST_ITERATOR_OK:
446 if (gst_pad_is_linked (pad)
447 && gst_pad_get_direction (pad) == GST_PAD_SRC) {
448 debug_dump_element_pad_link (pad, element, details, out,
451 gst_object_unref (pad);
453 case GST_ITERATOR_RESYNC:
454 gst_iterator_resync (pad_iter);
456 case GST_ITERATOR_ERROR:
457 case GST_ITERATOR_DONE:
462 gst_iterator_free (pad_iter);
464 gst_object_unref (element);
466 case GST_ITERATOR_RESYNC:
467 gst_iterator_resync (element_iter);
469 case GST_ITERATOR_ERROR:
470 case GST_ITERATOR_DONE:
471 elements_done = TRUE;
475 gst_iterator_free (element_iter);
480 * _gst_debug_bin_to_dot_file:
481 * @bin: the top-level pipeline that should be analyzed
482 * @file_name: output base filename (e.g. "myplayer")
484 * To aid debugging applications one can use this method to write out the whole
485 * network of gstreamer elements that form the pipeline into an dot file.
486 * This file can be processed with graphviz to get an image.
487 * <informalexample><programlisting>
488 * dot -Tpng -oimage.png graph_lowlevel.dot
489 * </programlisting></informalexample>
492 _gst_debug_bin_to_dot_file (GstBin * bin, GstDebugGraphDetails details,
493 const gchar * file_name)
495 gchar *full_file_name = NULL;
498 g_return_if_fail (GST_IS_BIN (bin));
500 if (G_LIKELY (priv_gst_dump_dot_dir == NULL))
504 file_name = g_get_application_name ();
506 file_name = "unnamed";
509 full_file_name = g_strdup_printf ("%s" G_DIR_SEPARATOR_S "%s.dot",
510 priv_gst_dump_dot_dir, file_name);
512 if ((out = fopen (full_file_name, "wb"))) {
513 gchar *state_name = NULL;
514 gchar *param_name = NULL;
516 if (details & GST_DEBUG_GRAPH_SHOW_STATES) {
517 state_name = debug_dump_get_element_state (GST_ELEMENT (bin));
519 if (details & GST_DEBUG_GRAPH_SHOW_NON_DEFAULT_PARAMS) {
520 param_name = debug_dump_get_element_params (GST_ELEMENT (bin));
525 "digraph pipeline {\n"
527 " fontname=\"Bitstream Vera Sans\";\n"
532 " label=\"<%s>\\n%s%s%s\";\n"
533 " node [style=filled, shape=box, fontsize=\"7\", fontname=\"Bitstream Vera Sans\"];\n"
534 " edge [labelfontsize=\"7\", fontsize=\"7\", labelfontname=\"Bitstream Vera Sans\", fontname=\"Bitstream Vera Sans\"];\n"
535 "\n", G_OBJECT_TYPE_NAME (bin), GST_OBJECT_NAME (bin),
536 (state_name ? state_name : ""), (param_name ? param_name : "")
543 debug_dump_element (bin, details, out, 1);
546 fprintf (out, "}\n");
548 GST_INFO ("wrote bin graph to : '%s'", full_file_name);
550 GST_WARNING ("Failed to open file '%s' for writing: %s", full_file_name,
553 g_free (full_file_name);
557 * _gst_debug_bin_to_dot_file_with_ts:
558 * @bin: the top-level pipeline that should be analyzed
559 * @file_name: output base filename (e.g. "myplayer")
561 * This works like _gst_debug_bin_to_dot_file(), but adds the current timestamp
562 * to the filename, so that it can be used to take multiple snapshots.
565 _gst_debug_bin_to_dot_file_with_ts (GstBin * bin, GstDebugGraphDetails details,
566 const gchar * file_name)
568 gchar *ts_file_name = NULL;
569 GstClockTime elapsed;
571 g_return_if_fail (GST_IS_BIN (bin));
574 file_name = g_get_application_name ();
576 file_name = "unnamed";
580 elapsed = GST_CLOCK_DIFF (_priv_gst_info_start_time,
581 gst_util_get_timestamp ());
583 g_strdup_printf ("%" GST_TIME_FORMAT "-%s", GST_TIME_ARGS (elapsed),
586 _gst_debug_bin_to_dot_file (bin, details, ts_file_name);
587 g_free (ts_file_name);
590 #endif /* GST_DISABLE_GST_DEBUG */