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., 51 Franklin St, Fifth Floor,
19 * Boston, MA 02110-1301, 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 look at their size 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 extern const gchar *priv_gst_dump_dot_dir; /* NULL *//* set from gst.c */
59 const gchar spaces[] = {
67 debug_dump_make_object_name (GstObject * obj)
69 return g_strcanon (g_strdup_printf ("%s_%p", GST_OBJECT_NAME (obj), obj),
70 G_CSET_A_2_Z G_CSET_a_2_z G_CSET_DIGITS "_", '_');
74 debug_dump_get_element_state (GstElement * element)
76 gchar *state_name = NULL;
77 const gchar *state_icons = "~0-=>";
78 GstState state = GST_STATE_VOID_PENDING, pending = GST_STATE_VOID_PENDING;
80 gst_element_get_state (element, &state, &pending, 0);
81 if (pending == GST_STATE_VOID_PENDING) {
82 gboolean is_locked = gst_element_is_locked_state (element);
83 state_name = g_strdup_printf ("\\n[%c]%s", state_icons[state],
84 (is_locked ? "(locked)" : ""));
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, const gchar * color_name,
140 const gchar * element_name, GstDebugGraphDetails details, FILE * out,
143 GstPadTemplate *pad_templ;
144 GstPadPresence presence;
146 const gchar *style_name;
147 const gchar *spc = &spaces[MAX (sizeof (spaces) - (1 + indent * 2), 0)];
149 pad_name = debug_dump_make_object_name (GST_OBJECT (pad));
151 /* pad availability */
152 style_name = "filled,solid";
153 if ((pad_templ = gst_pad_get_pad_template (pad))) {
154 presence = GST_PAD_TEMPLATE_PRESENCE (pad_templ);
155 gst_object_unref (pad_templ);
156 if (presence == GST_PAD_SOMETIMES) {
157 style_name = "filled,dotted";
158 } else if (presence == GST_PAD_REQUEST) {
159 style_name = "filled,dashed";
162 if (details & GST_DEBUG_GRAPH_SHOW_STATES) {
164 const gchar *activation_mode = "-><";
165 const gchar *task_mode = "";
168 GST_OBJECT_LOCK (pad);
169 task = GST_PAD_TASK (pad);
171 switch (gst_task_get_state (task)) {
172 case GST_TASK_STARTED:
175 case GST_TASK_PAUSED:
179 /* Invalid task state, ignoring */
183 GST_OBJECT_UNLOCK (pad);
185 /* check if pad flags */
187 GST_OBJECT_FLAG_IS_SET (pad, GST_PAD_FLAG_BLOCKED) ? 'B' : 'b';
189 GST_OBJECT_FLAG_IS_SET (pad, GST_PAD_FLAG_FLUSHING) ? 'F' : 'f';
191 GST_OBJECT_FLAG_IS_SET (pad, GST_PAD_FLAG_BLOCKING) ? 'B' : 'b';
195 "%s %s_%s [color=black, fillcolor=\"%s\", label=\"%s\\n[%c][%s]%s\", height=\"0.2\", style=\"%s\"];\n",
196 spc, element_name, pad_name, color_name, GST_OBJECT_NAME (pad),
197 activation_mode[pad->mode], pad_flags, task_mode, style_name);
200 "%s %s_%s [color=black, fillcolor=\"%s\", label=\"%s\", height=\"0.2\", style=\"%s\"];\n",
201 spc, element_name, pad_name, color_name, GST_OBJECT_NAME (pad),
209 debug_dump_element_pad (GstPad * pad, GstElement * element,
210 GstDebugGraphDetails details, FILE * out, const gint indent)
212 GstElement *target_element;
213 GstPad *target_pad, *tmp_pad;
216 gchar *target_element_name;
217 const gchar *color_name;
219 dir = gst_pad_get_direction (pad);
220 element_name = debug_dump_make_object_name (GST_OBJECT (element));
221 if (GST_IS_GHOST_PAD (pad)) {
223 (dir == GST_PAD_SRC) ? "#ffdddd" : ((dir ==
224 GST_PAD_SINK) ? "#ddddff" : "#ffffff");
225 /* output target-pad so that it belongs to this element */
226 if ((tmp_pad = gst_ghost_pad_get_target (GST_GHOST_PAD (pad)))) {
227 if ((target_pad = gst_pad_get_peer (tmp_pad))) {
228 gchar *pad_name, *target_pad_name;
229 const gchar *spc = &spaces[MAX (sizeof (spaces) - (1 + indent * 2), 0)];
231 if ((target_element = gst_pad_get_parent_element (target_pad))) {
232 target_element_name =
233 debug_dump_make_object_name (GST_OBJECT (target_element));
235 target_element_name = g_strdup ("");
237 debug_dump_pad (target_pad, color_name, target_element_name, details,
239 /* src ghostpad relationship */
240 pad_name = debug_dump_make_object_name (GST_OBJECT (pad));
241 target_pad_name = debug_dump_make_object_name (GST_OBJECT (target_pad));
242 if (dir == GST_PAD_SRC) {
243 fprintf (out, "%s%s_%s -> %s_%s [style=dashed, minlen=0]\n", spc,
244 target_element_name, target_pad_name, element_name, pad_name);
246 fprintf (out, "%s%s_%s -> %s_%s [style=dashed, minlen=0]\n", spc,
247 element_name, pad_name, target_element_name, target_pad_name);
249 g_free (target_pad_name);
250 g_free (target_element_name);
252 gst_object_unref (target_element);
253 gst_object_unref (target_pad);
256 gst_object_unref (tmp_pad);
260 (dir == GST_PAD_SRC) ? "#ffaaaa" : ((dir ==
261 GST_PAD_SINK) ? "#aaaaff" : "#cccccc");
264 debug_dump_pad (pad, color_name, element_name, details, out, indent);
265 g_free (element_name);
269 string_append_field (GQuark field, const GValue * value, gpointer ptr)
271 GString *str = (GString *) ptr;
272 gchar *value_str = gst_value_serialize (value);
273 gchar *esc_value_str;
275 if (value_str == NULL) {
276 g_string_append_printf (str, " %18s: NULL\\l", g_quark_to_string (field));
280 /* some enums can become really long */
281 if (strlen (value_str) > 25) {
285 value_str[25] = '\0';
287 /* mirror any brackets and quotes */
288 if (value_str[0] == '<')
289 value_str[pos--] = '>';
290 if (value_str[0] == '[')
291 value_str[pos--] = ']';
292 if (value_str[0] == '(')
293 value_str[pos--] = ')';
294 if (value_str[0] == '{')
295 value_str[pos--] = '}';
296 if (value_str[0] == '"')
297 value_str[pos--] = '"';
299 value_str[pos--] = ' ';
301 value_str[pos--] = '.';
302 value_str[pos--] = '.';
303 value_str[pos--] = '.';
305 esc_value_str = g_strescape (value_str, NULL);
307 g_string_append_printf (str, " %18s: %s\\l", g_quark_to_string (field),
311 g_free (esc_value_str);
316 debug_dump_describe_caps (GstCaps * caps, GstDebugGraphDetails details)
320 if (details & GST_DEBUG_GRAPH_SHOW_CAPS_DETAILS) {
322 if (gst_caps_is_any (caps) || gst_caps_is_empty (caps)) {
323 media = gst_caps_to_string (caps);
330 for (i = 0; i < gst_caps_get_size (caps); i++) {
332 STRUCTURE_ESTIMATED_STRING_LEN (gst_caps_get_structure (caps, i));
335 str = g_string_sized_new (slen);
336 for (i = 0; i < gst_caps_get_size (caps); i++) {
337 GstStructure *structure = gst_caps_get_structure (caps, i);
339 g_string_append (str, gst_structure_get_name (structure));
340 g_string_append (str, "\\l");
342 gst_structure_foreach (structure, string_append_field, (gpointer) str);
345 media = g_string_free (str, FALSE);
349 if (GST_CAPS_IS_SIMPLE (caps))
351 g_strdup (gst_structure_get_name (gst_caps_get_structure (caps, 0)));
353 media = g_strdup ("*");
359 debug_dump_element_pad_link (GstPad * pad, GstElement * element,
360 GstDebugGraphDetails details, FILE * out, const gint indent)
362 GstElement *peer_element;
364 GstCaps *caps, *peer_caps;
366 gchar *media_src = NULL, *media_sink = NULL;
367 gchar *pad_name, *element_name;
368 gchar *peer_pad_name, *peer_element_name;
369 const gchar *spc = &spaces[MAX (sizeof (spaces) - (1 + indent * 2), 0)];
371 if ((peer_pad = gst_pad_get_peer (pad))) {
372 if ((details & GST_DEBUG_GRAPH_SHOW_MEDIA_TYPE) ||
373 (details & GST_DEBUG_GRAPH_SHOW_CAPS_DETAILS)
375 caps = gst_pad_get_current_caps (pad);
377 caps = gst_pad_get_pad_template_caps (pad);
378 peer_caps = gst_pad_get_current_caps (peer_pad);
380 peer_caps = gst_pad_get_pad_template_caps (peer_pad);
382 media = debug_dump_describe_caps (caps, details);
383 /* check if peer caps are different */
384 if (peer_caps && !gst_caps_is_equal (caps, peer_caps)) {
387 tmp = debug_dump_describe_caps (peer_caps, details);
388 if (gst_pad_get_direction (pad) == GST_PAD_SRC) {
397 gst_caps_unref (peer_caps);
398 gst_caps_unref (caps);
401 pad_name = debug_dump_make_object_name (GST_OBJECT (pad));
403 element_name = debug_dump_make_object_name (GST_OBJECT (element));
405 element_name = g_strdup ("");
407 peer_pad_name = debug_dump_make_object_name (GST_OBJECT (peer_pad));
408 if ((peer_element = gst_pad_get_parent_element (peer_pad))) {
410 debug_dump_make_object_name (GST_OBJECT (peer_element));
412 peer_element_name = g_strdup ("");
417 fprintf (out, "%s%s_%s -> %s_%s [label=\"%s\"]\n", spc,
418 element_name, pad_name, peer_element_name, peer_pad_name, media);
420 } else if (media_src && media_sink) {
421 /* dot has some issues with placement of head and taillabels,
422 * we need an empty label to make space */
423 fprintf (out, "%s%s_%s -> %s_%s [labeldistance=\"10\", labelangle=\"0\", "
425 "taillabel=\"%s\", headlabel=\"%s\"]\n",
426 spc, element_name, pad_name, peer_element_name, peer_pad_name,
427 media_src, media_sink);
431 fprintf (out, "%s%s_%s -> %s_%s\n", spc,
432 element_name, pad_name, peer_element_name, peer_pad_name);
436 g_free (element_name);
437 g_free (peer_pad_name);
438 g_free (peer_element_name);
440 gst_object_unref (peer_element);
441 gst_object_unref (peer_pad);
446 debug_dump_element_pads (GstIterator * pad_iter, GstPad * pad,
447 GstElement * element, GstDebugGraphDetails details, FILE * out,
448 const gint indent, guint * src_pads, guint * sink_pads)
450 GValue item = { 0, };
456 switch (gst_iterator_next (pad_iter, &item)) {
457 case GST_ITERATOR_OK:
458 pad = g_value_get_object (&item);
459 debug_dump_element_pad (pad, element, details, out, indent);
460 dir = gst_pad_get_direction (pad);
461 if (dir == GST_PAD_SRC)
463 else if (dir == GST_PAD_SINK)
465 g_value_reset (&item);
467 case GST_ITERATOR_RESYNC:
468 gst_iterator_resync (pad_iter);
470 case GST_ITERATOR_ERROR:
471 case GST_ITERATOR_DONE:
479 * debug_dump_element:
480 * @bin: the bin that should be analyzed
481 * @out: file to write to
482 * @indent: level of graph indentation
484 * Helper for gst_debug_bin_to_dot_file() to recursively dump a pipeline.
487 debug_dump_element (GstBin * bin, GstDebugGraphDetails details, FILE * out,
490 GstIterator *element_iter, *pad_iter;
491 gboolean elements_done, pads_done;
492 GValue item = { 0, };
493 GValue item2 = { 0, };
496 guint src_pads, sink_pads;
498 gchar *state_name = NULL;
499 gchar *param_name = NULL;
500 const gchar *spc = &spaces[MAX (sizeof (spaces) - (1 + indent * 2), 0)];
502 element_iter = gst_bin_iterate_elements (bin);
503 elements_done = FALSE;
504 while (!elements_done) {
505 switch (gst_iterator_next (element_iter, &item)) {
506 case GST_ITERATOR_OK:
507 element = g_value_get_object (&item);
508 element_name = debug_dump_make_object_name (GST_OBJECT (element));
510 if (details & GST_DEBUG_GRAPH_SHOW_STATES) {
511 state_name = debug_dump_get_element_state (GST_ELEMENT (element));
513 if (details & GST_DEBUG_GRAPH_SHOW_NON_DEFAULT_PARAMS) {
514 param_name = debug_dump_get_element_params (GST_ELEMENT (element));
517 fprintf (out, "%ssubgraph cluster_%s {\n", spc, element_name);
518 fprintf (out, "%s fontname=\"Bitstream Vera Sans\";\n", spc);
519 fprintf (out, "%s fontsize=\"8\";\n", spc);
520 fprintf (out, "%s style=filled;\n", spc);
521 fprintf (out, "%s color=black;\n\n", spc);
522 fprintf (out, "%s label=\"%s\\n%s%s%s\";\n", spc,
523 G_OBJECT_TYPE_NAME (element), GST_OBJECT_NAME (element),
524 (state_name ? state_name : ""), (param_name ? param_name : "")
534 g_free (element_name);
536 src_pads = sink_pads = 0;
537 if ((pad_iter = gst_element_iterate_sink_pads (element))) {
538 debug_dump_element_pads (pad_iter, pad, element, details, out, indent,
539 &src_pads, &sink_pads);
540 gst_iterator_free (pad_iter);
542 if ((pad_iter = gst_element_iterate_src_pads (element))) {
543 debug_dump_element_pads (pad_iter, pad, element, details, out, indent,
544 &src_pads, &sink_pads);
545 gst_iterator_free (pad_iter);
547 if (GST_IS_BIN (element)) {
548 fprintf (out, "%s fillcolor=\"#ffffff\";\n", spc);
550 debug_dump_element (GST_BIN (element), details, out, indent + 1);
552 if (src_pads && !sink_pads)
553 fprintf (out, "%s fillcolor=\"#ffaaaa\";\n", spc);
554 else if (!src_pads && sink_pads)
555 fprintf (out, "%s fillcolor=\"#aaaaff\";\n", spc);
556 else if (src_pads && sink_pads)
557 fprintf (out, "%s fillcolor=\"#aaffaa\";\n", spc);
559 fprintf (out, "%s fillcolor=\"#ffffff\";\n", spc);
561 fprintf (out, "%s}\n\n", spc);
562 if ((pad_iter = gst_element_iterate_pads (element))) {
565 switch (gst_iterator_next (pad_iter, &item2)) {
566 case GST_ITERATOR_OK:
567 pad = g_value_get_object (&item2);
568 if (gst_pad_is_linked (pad)) {
569 if (gst_pad_get_direction (pad) == GST_PAD_SRC) {
570 debug_dump_element_pad_link (pad, element, details, out,
573 GstPad *peer_pad = gst_pad_get_peer (pad);
576 if (!GST_IS_GHOST_PAD (peer_pad)
577 && GST_IS_PROXY_PAD (peer_pad)) {
578 debug_dump_element_pad_link (peer_pad, NULL, details,
581 gst_object_unref (peer_pad);
585 g_value_reset (&item2);
587 case GST_ITERATOR_RESYNC:
588 gst_iterator_resync (pad_iter);
590 case GST_ITERATOR_ERROR:
591 case GST_ITERATOR_DONE:
596 g_value_unset (&item2);
597 gst_iterator_free (pad_iter);
599 g_value_reset (&item);
601 case GST_ITERATOR_RESYNC:
602 gst_iterator_resync (element_iter);
604 case GST_ITERATOR_ERROR:
605 case GST_ITERATOR_DONE:
606 elements_done = TRUE;
611 g_value_unset (&item);
612 gst_iterator_free (element_iter);
616 * gst_debug_bin_to_dot_file:
617 * @bin: the top-level pipeline that should be analyzed
618 * @file_name: output base filename (e.g. "myplayer")
620 * To aid debugging applications one can use this method to write out the whole
621 * network of gstreamer elements that form the pipeline into an dot file.
622 * This file can be processed with graphviz to get an image.
623 * <informalexample><programlisting>
624 * dot -Tpng -oimage.png graph_lowlevel.dot
625 * </programlisting></informalexample>
628 gst_debug_bin_to_dot_file (GstBin * bin, GstDebugGraphDetails details,
629 const gchar * file_name)
631 gchar *full_file_name = NULL;
634 g_return_if_fail (GST_IS_BIN (bin));
636 if (G_LIKELY (priv_gst_dump_dot_dir == NULL))
640 file_name = g_get_application_name ();
642 file_name = "unnamed";
645 full_file_name = g_strdup_printf ("%s" G_DIR_SEPARATOR_S "%s.dot",
646 priv_gst_dump_dot_dir, file_name);
648 if ((out = fopen (full_file_name, "wb"))) {
649 gchar *state_name = NULL;
650 gchar *param_name = NULL;
652 if (details & GST_DEBUG_GRAPH_SHOW_STATES) {
653 state_name = debug_dump_get_element_state (GST_ELEMENT (bin));
655 if (details & GST_DEBUG_GRAPH_SHOW_NON_DEFAULT_PARAMS) {
656 param_name = debug_dump_get_element_params (GST_ELEMENT (bin));
661 "digraph pipeline {\n"
663 " fontname=\"sans\";\n"
664 " fontsize=\"10\";\n"
668 " label=\"<%s>\\n%s%s%s\";\n"
669 " node [style=filled, shape=box, fontsize=\"9\", fontname=\"sans\", margin=\"0.0,0.0\"];\n"
670 " edge [labelfontsize=\"6\", fontsize=\"9\", fontname=\"monospace\"];\n"
674 " margin=\"0.05,0.05\",\n"
675 " label=\"Legend\\lElement-States: [~] void-pending, [0] null, [-] ready, [=] paused, [>] playing\\lPad-Activation: [-] none, [>] push, [<] pull\\lPad-Flags: [b]locked, [f]lushing, [b]locking; upper-case is set\\lPad-Task: [T] has started task, [t] has paused task\\l\"\n,"
677 "\n", G_OBJECT_TYPE_NAME (bin), GST_OBJECT_NAME (bin),
678 (state_name ? state_name : ""), (param_name ? param_name : "")
685 debug_dump_element (bin, details, out, 1);
688 fprintf (out, "}\n");
690 GST_INFO ("wrote bin graph to : '%s'", full_file_name);
692 GST_WARNING ("Failed to open file '%s' for writing: %s", full_file_name,
695 g_free (full_file_name);
699 * gst_debug_bin_to_dot_file_with_ts:
700 * @bin: the top-level pipeline that should be analyzed
701 * @file_name: output base filename (e.g. "myplayer")
703 * This works like gst_debug_bin_to_dot_file(), but adds the current timestamp
704 * to the filename, so that it can be used to take multiple snapshots.
707 gst_debug_bin_to_dot_file_with_ts (GstBin * bin,
708 GstDebugGraphDetails details, const gchar * file_name)
710 gchar *ts_file_name = NULL;
711 GstClockTime elapsed;
713 g_return_if_fail (GST_IS_BIN (bin));
716 file_name = g_get_application_name ();
718 file_name = "unnamed";
722 elapsed = GST_CLOCK_DIFF (_priv_gst_info_start_time,
723 gst_util_get_timestamp ());
725 /* we don't use GST_TIME_FORMAT as such filenames would fail on some
726 * filesystems like fat */
728 g_strdup_printf ("%u.%02u.%02u.%09u-%s", GST_TIME_ARGS (elapsed),
731 gst_debug_bin_to_dot_file (bin, details, ts_file_name);
732 g_free (ts_file_name);
734 #else /* !GST_DISABLE_GST_DEBUG */
735 #ifndef GST_REMOVE_DISABLED
737 gst_debug_bin_to_dot_file (GstBin * bin, GstDebugGraphDetails details,
738 const gchar * file_name)
743 gst_debug_bin_to_dot_file_with_ts (GstBin * bin, GstDebugGraphDetails details,
744 const gchar * file_name)
747 #endif /* GST_REMOVE_DISABLED */
748 #endif /* GST_DISABLE_GST_DEBUG */