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 ];
23 * this creates strange graphs ("minlen=0" is better)
24 * try puting src/sink ghostpads for each bin into invisible clusters
26 * for more compact nodes, try
27 * - changing node-shape from box into record
28 * - use labels like : element [ label="{element | <src> src | <sink> sink}"]
29 * - point to record-connectors : element1:src -> element2:sink
30 * - we use head/tail labels for pad-caps right now
31 * - this does not work well, as dot seems to not llok at their sizen when
33 * - we could add the caps to the pad itself, then we should use one line per
34 * caps (simple caps = one line)
37 #include "gst_private.h"
38 #include "gstdebugutils.h"
40 #ifndef GST_DISABLE_GST_DEBUG
49 #include "gstobject.h"
50 #include "gstghostpad.h"
55 /*** PIPELINE GRAPHS **********************************************************/
57 const gchar *priv_gst_dump_dot_dir; /* NULL *//* set from gst.c */
59 const gchar spaces[] = {
66 extern GstClockTime _priv_gst_info_start_time;
69 debug_dump_make_object_name (GstObject * element)
71 return g_strcanon (g_strdup_printf ("%s_%p", GST_OBJECT_NAME (element),
72 element), G_CSET_A_2_Z G_CSET_a_2_z G_CSET_DIGITS "_", '_');
76 debug_dump_get_element_state (GstElement * element)
78 gchar *state_name = NULL;
79 const gchar *state_icons = "~0-=>";
80 GstState state = 0, pending = 0;
82 gst_element_get_state (element, &state, &pending, 0);
83 if (pending == GST_STATE_VOID_PENDING) {
84 state_name = g_strdup_printf ("\\n[%c]", state_icons[state]);
86 state_name = g_strdup_printf ("\\n[%c] -> [%c]", state_icons[state],
87 state_icons[pending]);
93 debug_dump_get_element_params (GstElement * element)
95 gchar *param_name = NULL;
96 GParamSpec **properties, *property;
97 GValue value = { 0, };
98 guint i, number_of_properties;
99 gchar *tmp, *value_str;
101 /* get paramspecs and show non-default properties */
103 g_object_class_list_properties (G_OBJECT_CLASS (GST_ELEMENT_GET_CLASS
104 (element)), &number_of_properties);
106 for (i = 0; i < number_of_properties; i++) {
107 property = properties[i];
109 /* ski some properties */
110 if (!(property->flags & G_PARAM_READABLE))
112 if (!strcmp (property->name, "name"))
115 g_value_init (&value, property->value_type);
116 g_object_get_property (G_OBJECT (element), property->name, &value);
117 if (!(g_param_value_defaults (property, &value))) {
118 tmp = g_strdup_value_contents (&value);
119 value_str = g_strescape (tmp, NULL);
123 param_name = g_strdup_printf ("%s\\n%s=%s",
124 tmp, property->name, value_str);
127 param_name = g_strdup_printf ("\\n%s=%s", property->name, value_str);
131 g_value_unset (&value);
139 debug_dump_pad (GstPad * pad, gchar * color_name, gchar * element_name,
140 GstDebugGraphDetails details, FILE * out, const gint indent)
142 GstPadTemplate *pad_templ;
143 GstPadPresence presence;
144 gchar *pad_name, *style_name;
145 const gchar *spc = &spaces[MAX (sizeof (spaces) - (1 + indent * 2), 0)];
147 pad_name = debug_dump_make_object_name (GST_OBJECT (pad));
149 /* pad availability */
150 style_name = "filled,solid";
151 if ((pad_templ = gst_pad_get_pad_template (pad))) {
152 presence = GST_PAD_TEMPLATE_PRESENCE (pad_templ);
153 if (presence == GST_PAD_SOMETIMES) {
154 style_name = "filled,dotted";
155 } else if (presence == GST_PAD_REQUEST) {
156 style_name = "filled,dashed";
159 if (details & GST_DEBUG_GRAPH_SHOW_STATES) {
161 const gchar *activation_mode = "-><";
163 /* check if pad flags */
164 pad_flags[0] = GST_OBJECT_FLAG_IS_SET (pad, GST_PAD_BLOCKED) ? 'B' : 'b';
165 pad_flags[1] = GST_OBJECT_FLAG_IS_SET (pad, GST_PAD_FLUSHING) ? 'F' : 'f';
166 pad_flags[2] = GST_OBJECT_FLAG_IS_SET (pad, GST_PAD_IN_GETCAPS) ? 'G' : 'g';
167 pad_flags[3] = GST_OBJECT_FLAG_IS_SET (pad, GST_PAD_IN_SETCAPS) ? 's' : 's';
168 pad_flags[4] = GST_OBJECT_FLAG_IS_SET (pad, GST_PAD_BLOCKING) ? 'B' : 'b';
172 "%s %s_%s [color=black, fillcolor=\"%s\", label=\"%s\\n[%c][%s]\", height=\"0.2\", style=\"%s\"];\n",
173 spc, element_name, pad_name, color_name, GST_OBJECT_NAME (pad),
174 activation_mode[pad->mode], pad_flags, style_name);
177 "%s %s_%s [color=black, fillcolor=\"%s\", label=\"%s\", height=\"0.2\", style=\"%s\"];\n",
178 spc, element_name, pad_name, color_name, GST_OBJECT_NAME (pad),
186 debug_dump_element_pad (GstPad * pad, GstElement * element,
187 GstDebugGraphDetails details, FILE * out, const gint indent)
189 GstElement *target_element;
190 GstPad *target_pad, *tmp_pad;
193 gchar *target_element_name;
196 dir = gst_pad_get_direction (pad);
197 element_name = debug_dump_make_object_name (GST_OBJECT (element));
198 if (GST_IS_GHOST_PAD (pad)) {
200 (dir == GST_PAD_SRC) ? "#ffdddd" : ((dir ==
201 GST_PAD_SINK) ? "#ddddff" : "#ffffff");
202 /* output target-pad so that it belongs to this element */
203 if ((tmp_pad = gst_ghost_pad_get_target (GST_GHOST_PAD (pad)))) {
204 if ((target_pad = gst_pad_get_peer (tmp_pad))) {
205 if ((target_element = gst_pad_get_parent_element (target_pad))) {
206 target_element_name =
207 debug_dump_make_object_name (GST_OBJECT (target_element));
209 target_element_name = "";
211 debug_dump_pad (target_pad, color_name, target_element_name, details,
213 if (target_element) {
214 g_free (target_element_name);
215 gst_object_unref (target_element);
217 gst_object_unref (target_pad);
219 gst_object_unref (tmp_pad);
223 (dir == GST_PAD_SRC) ? "#ffaaaa" : ((dir ==
224 GST_PAD_SINK) ? "#aaaaff" : "#cccccc");
227 debug_dump_pad (pad, color_name, element_name, details, out, indent);
228 g_free (element_name);
232 string_append_field (GQuark field, const GValue * value, gpointer ptr)
234 GString *str = (GString *) ptr;
235 gchar *value_str = gst_value_serialize (value);
237 /* some enums can become really long */
238 if (strlen (value_str) > 25) {
242 value_str[25] = '\0';
244 /* mirror any brackets */
245 if (value_str[0] == '<')
246 value_str[pos--] = '>';
247 if (value_str[0] == '[')
248 value_str[pos--] = ']';
249 if (value_str[0] == '(')
250 value_str[pos--] = ')';
251 if (value_str[0] == '{')
252 value_str[pos--] = '}';
254 value_str[pos--] = ' ';
256 value_str[pos--] = '.';
257 value_str[pos--] = '.';
258 value_str[pos--] = '.';
260 g_string_append_printf (str, " %18s: %s\\l", g_quark_to_string (field),
268 debug_dump_describe_caps (GstCaps * caps, GstDebugGraphDetails details,
269 gboolean * need_free)
273 if (details & GST_DEBUG_GRAPH_SHOW_CAPS_DETAILS) {
275 if (gst_caps_is_any (caps) || gst_caps_is_empty (caps)) {
276 media = gst_caps_to_string (caps);
284 for (i = 0; i < gst_caps_get_size (caps); i++) {
286 STRUCTURE_ESTIMATED_STRING_LEN (gst_caps_get_structure (caps, i));
289 str = g_string_sized_new (slen);
290 for (i = 0; i < gst_caps_get_size (caps); i++) {
291 GstStructure *structure = gst_caps_get_structure (caps, i);
293 g_string_append (str, gst_structure_get_name (structure));
294 g_string_append (str, "\\l");
296 gst_structure_foreach (structure, string_append_field, (gpointer) str);
299 media = g_string_free (str, FALSE);
304 if (GST_CAPS_IS_SIMPLE (caps))
306 (gchar *) gst_structure_get_name (gst_caps_get_structure (caps, 0));
315 debug_dump_element_pad_link (GstPad * pad, GstElement * element,
316 GstDebugGraphDetails details, FILE * out, const gint indent)
318 GstElement *peer_element, *target_element;
319 GstPad *peer_pad, *target_pad, *tmp_pad;
320 GstCaps *caps, *peer_caps;
321 gboolean free_caps, free_peer_caps;
322 gboolean free_media, free_media_src, free_media_sink;
324 gchar *media_src = NULL, *media_sink = NULL;
325 gchar *pad_name, *element_name;
326 gchar *peer_pad_name, *peer_element_name;
327 gchar *target_pad_name, *target_element_name;
328 const gchar *spc = &spaces[MAX (sizeof (spaces) - (1 + indent * 2), 0)];
330 if ((peer_pad = gst_pad_get_peer (pad))) {
331 free_media = free_media_src = free_media_sink = FALSE;
332 if ((details & GST_DEBUG_GRAPH_SHOW_MEDIA_TYPE) ||
333 (details & GST_DEBUG_GRAPH_SHOW_CAPS_DETAILS)
335 if ((caps = gst_pad_get_negotiated_caps (pad))) {
339 if (!(caps = (GstCaps *)
340 gst_pad_get_pad_template_caps (pad))) {
341 /* this should not happen */
345 if ((peer_caps = gst_pad_get_negotiated_caps (peer_pad))) {
346 free_peer_caps = TRUE;
348 free_peer_caps = FALSE;
349 peer_caps = (GstCaps *) gst_pad_get_pad_template_caps (peer_pad);
352 media = debug_dump_describe_caps (caps, details, &free_media);
353 /* check if peer caps are different */
354 if (peer_caps && !gst_caps_is_equal (caps, peer_caps)) {
358 tmp = debug_dump_describe_caps (peer_caps, details, &free_tmp);
359 if (gst_pad_get_direction (pad) == GST_PAD_SRC) {
361 free_media_src = free_media;
363 free_media_sink = free_tmp;
366 free_media_src = free_tmp;
368 free_media_sink = free_media;
374 gst_caps_unref (caps);
377 if (free_peer_caps && peer_caps) {
378 gst_caps_unref (peer_caps);
382 pad_name = debug_dump_make_object_name (GST_OBJECT (pad));
384 element_name = debug_dump_make_object_name (GST_OBJECT (element));
388 peer_pad_name = debug_dump_make_object_name (GST_OBJECT (peer_pad));
389 if ((peer_element = gst_pad_get_parent_element (peer_pad))) {
391 debug_dump_make_object_name (GST_OBJECT (peer_element));
393 peer_element_name = "";
396 if (GST_IS_GHOST_PAD (pad)) {
397 if ((tmp_pad = gst_ghost_pad_get_target (GST_GHOST_PAD (pad)))) {
398 if ((target_pad = gst_pad_get_peer (tmp_pad))) {
400 debug_dump_make_object_name (GST_OBJECT (target_pad));
401 if ((target_element = gst_pad_get_parent_element (target_pad))) {
402 target_element_name =
403 debug_dump_make_object_name (GST_OBJECT (target_element));
405 target_element_name = "";
407 /* src ghostpad relationship */
408 fprintf (out, "%s%s_%s -> %s_%s [style=dashed, minlen=0]\n", spc,
409 target_element_name, target_pad_name, element_name, pad_name);
411 g_free (target_pad_name);
412 if (target_element) {
413 g_free (target_element_name);
414 gst_object_unref (target_element);
416 gst_object_unref (target_pad);
418 gst_object_unref (tmp_pad);
421 if (GST_IS_GHOST_PAD (peer_pad)) {
422 if ((tmp_pad = gst_ghost_pad_get_target (GST_GHOST_PAD (peer_pad)))) {
423 if ((target_pad = gst_pad_get_peer (tmp_pad))) {
425 debug_dump_make_object_name (GST_OBJECT (target_pad));
426 if ((target_element = gst_pad_get_parent_element (target_pad))) {
427 target_element_name =
428 debug_dump_make_object_name (GST_OBJECT (target_element));
430 target_element_name = "";
432 /* sink ghostpad relationship */
433 fprintf (out, "%s%s_%s -> %s_%s [style=dashed, minlen=0]\n", spc,
434 peer_element_name, peer_pad_name,
435 target_element_name, target_pad_name);
436 /* FIXME: we are missing links from the proxy pad
437 * theoretically we need to:
438 * pad=gst_object_ref(target_pad);
439 * goto line 280: if ((peer_pad = gst_pad_get_peer (pad)))
440 * as this would be ugly we need to refactor ...
442 debug_dump_element_pad_link (target_pad, target_element, details, out,
444 g_free (target_pad_name);
445 if (target_element) {
446 g_free (target_element_name);
447 gst_object_unref (target_element);
449 gst_object_unref (target_pad);
451 gst_object_unref (tmp_pad);
457 fprintf (out, "%s%s_%s -> %s_%s [label=\"%s\"]\n", spc,
458 element_name, pad_name, peer_element_name, peer_pad_name, media);
462 } else if (media_src && media_sink) {
463 /* dot has some issues with placement of head and taillabels,
464 * we need an empty label to make space */
465 fprintf (out, "%s%s_%s -> %s_%s [labeldistance=\"10\", labelangle=\"0\", "
467 "headlabel=\"%s\", taillabel=\"%s\"]\n",
468 spc, element_name, pad_name, peer_element_name, peer_pad_name,
469 media_src, media_sink);
475 fprintf (out, "%s%s_%s -> %s_%s\n", spc,
476 element_name, pad_name, peer_element_name, peer_pad_name);
481 g_free (element_name);
483 g_free (peer_pad_name);
485 g_free (peer_element_name);
486 gst_object_unref (peer_element);
488 gst_object_unref (peer_pad);
493 * debug_dump_element:
494 * @bin: the bin that should be analyzed
495 * @out: file to write to
496 * @indent: level of graph indentation
498 * Helper for _gst_debug_bin_to_dot_file() to recursively dump a pipeline.
501 debug_dump_element (GstBin * bin, GstDebugGraphDetails details, FILE * out,
504 GstIterator *element_iter, *pad_iter;
505 gboolean elements_done, pads_done;
509 guint src_pads, sink_pads;
511 gchar *state_name = NULL;
512 gchar *param_name = NULL;
513 const gchar *spc = &spaces[MAX (sizeof (spaces) - (1 + indent * 2), 0)];
515 element_iter = gst_bin_iterate_elements (bin);
516 elements_done = FALSE;
517 while (!elements_done) {
518 switch (gst_iterator_next (element_iter, (gpointer) & element)) {
519 case GST_ITERATOR_OK:
520 element_name = debug_dump_make_object_name (GST_OBJECT (element));
522 if (details & GST_DEBUG_GRAPH_SHOW_STATES) {
523 state_name = debug_dump_get_element_state (GST_ELEMENT (element));
525 if (details & GST_DEBUG_GRAPH_SHOW_NON_DEFAULT_PARAMS) {
526 param_name = debug_dump_get_element_params (GST_ELEMENT (element));
529 fprintf (out, "%ssubgraph cluster_%s {\n", spc, element_name);
530 fprintf (out, "%s fontname=\"Bitstream Vera Sans\";\n", spc);
531 fprintf (out, "%s fontsize=\"8\";\n", spc);
532 fprintf (out, "%s style=filled;\n", spc);
533 fprintf (out, "%s color=black;\n\n", spc);
534 fprintf (out, "%s label=\"%s\\n%s%s%s\";\n", spc,
535 G_OBJECT_TYPE_NAME (element), GST_OBJECT_NAME (element),
536 (state_name ? state_name : ""), (param_name ? param_name : "")
546 g_free (element_name);
548 src_pads = sink_pads = 0;
549 if ((pad_iter = gst_element_iterate_pads (element))) {
552 switch (gst_iterator_next (pad_iter, (gpointer) & pad)) {
553 case GST_ITERATOR_OK:
554 debug_dump_element_pad (pad, element, details, out, indent);
555 dir = gst_pad_get_direction (pad);
556 if (dir == GST_PAD_SRC)
558 else if (dir == GST_PAD_SINK)
560 gst_object_unref (pad);
562 case GST_ITERATOR_RESYNC:
563 gst_iterator_resync (pad_iter);
565 case GST_ITERATOR_ERROR:
566 case GST_ITERATOR_DONE:
571 gst_iterator_free (pad_iter);
573 if (GST_IS_BIN (element)) {
574 fprintf (out, "%s fillcolor=\"#ffffff\";\n", spc);
576 debug_dump_element (GST_BIN (element), details, out, indent + 1);
578 if (src_pads && !sink_pads)
579 fprintf (out, "%s fillcolor=\"#ffaaaa\";\n", spc);
580 else if (!src_pads && sink_pads)
581 fprintf (out, "%s fillcolor=\"#aaaaff\";\n", spc);
582 else if (src_pads && sink_pads)
583 fprintf (out, "%s fillcolor=\"#aaffaa\";\n", spc);
585 fprintf (out, "%s fillcolor=\"#ffffff\";\n", spc);
587 fprintf (out, "%s}\n\n", spc);
588 if ((pad_iter = gst_element_iterate_pads (element))) {
591 switch (gst_iterator_next (pad_iter, (gpointer) & pad)) {
592 case GST_ITERATOR_OK:
593 if (gst_pad_is_linked (pad)
594 && gst_pad_get_direction (pad) == GST_PAD_SRC) {
595 debug_dump_element_pad_link (pad, element, details, out,
598 gst_object_unref (pad);
600 case GST_ITERATOR_RESYNC:
601 gst_iterator_resync (pad_iter);
603 case GST_ITERATOR_ERROR:
604 case GST_ITERATOR_DONE:
609 gst_iterator_free (pad_iter);
611 gst_object_unref (element);
613 case GST_ITERATOR_RESYNC:
614 gst_iterator_resync (element_iter);
616 case GST_ITERATOR_ERROR:
617 case GST_ITERATOR_DONE:
618 elements_done = TRUE;
622 gst_iterator_free (element_iter);
626 * _gst_debug_bin_to_dot_file:
627 * @bin: the top-level pipeline that should be analyzed
628 * @file_name: output base filename (e.g. "myplayer")
630 * To aid debugging applications one can use this method to write out the whole
631 * network of gstreamer elements that form the pipeline into an dot file.
632 * This file can be processed with graphviz to get an image.
633 * <informalexample><programlisting>
634 * dot -Tpng -oimage.png graph_lowlevel.dot
635 * </programlisting></informalexample>
638 _gst_debug_bin_to_dot_file (GstBin * bin, GstDebugGraphDetails details,
639 const gchar * file_name)
641 gchar *full_file_name = NULL;
644 g_return_if_fail (GST_IS_BIN (bin));
646 if (G_LIKELY (priv_gst_dump_dot_dir == NULL))
650 file_name = g_get_application_name ();
652 file_name = "unnamed";
655 full_file_name = g_strdup_printf ("%s" G_DIR_SEPARATOR_S "%s.dot",
656 priv_gst_dump_dot_dir, file_name);
658 if ((out = fopen (full_file_name, "wb"))) {
659 gchar *state_name = NULL;
660 gchar *param_name = NULL;
662 if (details & GST_DEBUG_GRAPH_SHOW_STATES) {
663 state_name = debug_dump_get_element_state (GST_ELEMENT (bin));
665 if (details & GST_DEBUG_GRAPH_SHOW_NON_DEFAULT_PARAMS) {
666 param_name = debug_dump_get_element_params (GST_ELEMENT (bin));
671 "digraph pipeline {\n"
673 " fontname=\"sans\";\n"
674 " fontsize=\"10\";\n"
678 " label=\"<%s>\\n%s%s%s\";\n"
679 " node [style=filled, shape=box, fontsize=\"9\", fontname=\"sans\", margin=\"0.0,0.0\"];\n"
680 " edge [labelfontsize=\"6\", fontsize=\"9\", fontname=\"monospace\"];\n"
681 "\n", G_OBJECT_TYPE_NAME (bin), GST_OBJECT_NAME (bin),
682 (state_name ? state_name : ""), (param_name ? param_name : "")
689 debug_dump_element (bin, details, out, 1);
692 fprintf (out, "}\n");
694 GST_INFO ("wrote bin graph to : '%s'", full_file_name);
696 GST_WARNING ("Failed to open file '%s' for writing: %s", full_file_name,
699 g_free (full_file_name);
703 * _gst_debug_bin_to_dot_file_with_ts:
704 * @bin: the top-level pipeline that should be analyzed
705 * @file_name: output base filename (e.g. "myplayer")
707 * This works like _gst_debug_bin_to_dot_file(), but adds the current timestamp
708 * to the filename, so that it can be used to take multiple snapshots.
711 _gst_debug_bin_to_dot_file_with_ts (GstBin * bin, GstDebugGraphDetails details,
712 const gchar * file_name)
714 gchar *ts_file_name = NULL;
715 GstClockTime elapsed;
717 g_return_if_fail (GST_IS_BIN (bin));
720 file_name = g_get_application_name ();
722 file_name = "unnamed";
726 elapsed = GST_CLOCK_DIFF (_priv_gst_info_start_time,
727 gst_util_get_timestamp ());
729 /* we don't use GST_TIME_FORMAT as such filenames would fail on some
730 * filesystems like fat */
732 g_strdup_printf ("%u.%02u.%02u.%09u-%s", GST_TIME_ARGS (elapsed),
735 _gst_debug_bin_to_dot_file (bin, details, ts_file_name);
736 g_free (ts_file_name);
738 #else /* !GST_DISABLE_GST_DEBUG */
739 #ifndef GST_REMOVE_DISABLED
741 _gst_debug_bin_to_dot_file (GstBin * bin, GstDebugGraphDetails details,
742 const gchar * file_name)
747 _gst_debug_bin_to_dot_file_with_ts (GstBin * bin, GstDebugGraphDetails details,
748 const gchar * file_name)
751 #endif /* GST_REMOVE_DISABLED */
752 #endif /* GST_DISABLE_GST_DEBUG */