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[] = {
66 extern GstClockTime _priv_gst_info_start_time;
69 debug_dump_make_object_name (GstObject * obj)
71 return g_strcanon (g_strdup_printf ("%s_%p", GST_OBJECT_NAME (obj), obj),
72 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 = GST_STATE_VOID_PENDING, pending = GST_STATE_VOID_PENDING;
82 gst_element_get_state (element, &state, &pending, 0);
83 if (pending == GST_STATE_VOID_PENDING) {
84 gboolean is_locked = gst_element_is_locked_state (element);
85 state_name = g_strdup_printf ("\\n[%c]%s", state_icons[state],
86 (is_locked ? "(locked)" : ""));
88 state_name = g_strdup_printf ("\\n[%c] -> [%c]", state_icons[state],
89 state_icons[pending]);
95 debug_dump_get_element_params (GstElement * element)
97 gchar *param_name = NULL;
98 GParamSpec **properties, *property;
99 GValue value = { 0, };
100 guint i, number_of_properties;
101 gchar *tmp, *value_str;
103 /* get paramspecs and show non-default properties */
105 g_object_class_list_properties (G_OBJECT_CLASS (GST_ELEMENT_GET_CLASS
106 (element)), &number_of_properties);
108 for (i = 0; i < number_of_properties; i++) {
109 property = properties[i];
111 /* ski some properties */
112 if (!(property->flags & G_PARAM_READABLE))
114 if (!strcmp (property->name, "name"))
117 g_value_init (&value, property->value_type);
118 g_object_get_property (G_OBJECT (element), property->name, &value);
119 if (!(g_param_value_defaults (property, &value))) {
120 tmp = g_strdup_value_contents (&value);
121 value_str = g_strescape (tmp, NULL);
125 param_name = g_strdup_printf ("%s\\n%s=%s",
126 tmp, property->name, value_str);
129 param_name = g_strdup_printf ("\\n%s=%s", property->name, value_str);
133 g_value_unset (&value);
141 debug_dump_pad (GstPad * pad, const gchar * color_name,
142 const gchar * element_name, GstDebugGraphDetails details, FILE * out,
145 GstPadTemplate *pad_templ;
146 GstPadPresence presence;
148 const gchar *style_name;
149 const gchar *spc = &spaces[MAX (sizeof (spaces) - (1 + indent * 2), 0)];
151 pad_name = debug_dump_make_object_name (GST_OBJECT (pad));
153 /* pad availability */
154 style_name = "filled,solid";
155 if ((pad_templ = gst_pad_get_pad_template (pad))) {
156 presence = GST_PAD_TEMPLATE_PRESENCE (pad_templ);
157 if (presence == GST_PAD_SOMETIMES) {
158 style_name = "filled,dotted";
159 } else if (presence == GST_PAD_REQUEST) {
160 style_name = "filled,dashed";
163 if (details & GST_DEBUG_GRAPH_SHOW_STATES) {
165 const gchar *activation_mode = "-><";
166 const gchar *task_mode = "";
169 GST_OBJECT_LOCK (pad);
170 task = GST_PAD_TASK (pad);
172 switch (gst_task_get_state (task)) {
173 case GST_TASK_STARTED:
176 case GST_TASK_PAUSED:
180 /* Invalid task state, ignoring */
184 GST_OBJECT_UNLOCK (pad);
186 /* check if pad flags */
188 GST_OBJECT_FLAG_IS_SET (pad, GST_PAD_FLAG_BLOCKED) ? 'B' : 'b';
190 GST_OBJECT_FLAG_IS_SET (pad, GST_PAD_FLAG_FLUSHING) ? 'F' : 'f';
192 GST_OBJECT_FLAG_IS_SET (pad, GST_PAD_FLAG_BLOCKING) ? 'B' : 'b';
196 "%s %s_%s [color=black, fillcolor=\"%s\", label=\"%s\\n[%c][%s]%s\", height=\"0.2\", style=\"%s\"];\n",
197 spc, element_name, pad_name, color_name, GST_OBJECT_NAME (pad),
198 activation_mode[pad->mode], pad_flags, task_mode, style_name);
201 "%s %s_%s [color=black, fillcolor=\"%s\", label=\"%s\", height=\"0.2\", style=\"%s\"];\n",
202 spc, element_name, pad_name, color_name, GST_OBJECT_NAME (pad),
210 debug_dump_element_pad (GstPad * pad, GstElement * element,
211 GstDebugGraphDetails details, FILE * out, const gint indent)
213 GstElement *target_element;
214 GstPad *target_pad, *tmp_pad;
217 gchar *target_element_name;
218 const gchar *color_name;
220 dir = gst_pad_get_direction (pad);
221 element_name = debug_dump_make_object_name (GST_OBJECT (element));
222 if (GST_IS_GHOST_PAD (pad)) {
224 (dir == GST_PAD_SRC) ? "#ffdddd" : ((dir ==
225 GST_PAD_SINK) ? "#ddddff" : "#ffffff");
226 /* output target-pad so that it belongs to this element */
227 if ((tmp_pad = gst_ghost_pad_get_target (GST_GHOST_PAD (pad)))) {
228 if ((target_pad = gst_pad_get_peer (tmp_pad))) {
229 gchar *pad_name, *target_pad_name;
230 const gchar *spc = &spaces[MAX (sizeof (spaces) - (1 + indent * 2), 0)];
232 if ((target_element = gst_pad_get_parent_element (target_pad))) {
233 target_element_name =
234 debug_dump_make_object_name (GST_OBJECT (target_element));
236 target_element_name = g_strdup ("");
238 debug_dump_pad (target_pad, color_name, target_element_name, details,
240 /* src ghostpad relationship */
241 pad_name = debug_dump_make_object_name (GST_OBJECT (pad));
242 target_pad_name = debug_dump_make_object_name (GST_OBJECT (target_pad));
243 if (dir == GST_PAD_SRC) {
244 fprintf (out, "%s%s_%s -> %s_%s [style=dashed, minlen=0]\n", spc,
245 target_element_name, target_pad_name, element_name, pad_name);
247 fprintf (out, "%s%s_%s -> %s_%s [style=dashed, minlen=0]\n", spc,
248 element_name, pad_name, target_element_name, target_pad_name);
250 g_free (target_pad_name);
251 g_free (target_element_name);
253 gst_object_unref (target_element);
254 gst_object_unref (target_pad);
257 gst_object_unref (tmp_pad);
261 (dir == GST_PAD_SRC) ? "#ffaaaa" : ((dir ==
262 GST_PAD_SINK) ? "#aaaaff" : "#cccccc");
265 debug_dump_pad (pad, color_name, element_name, details, out, indent);
266 g_free (element_name);
270 string_append_field (GQuark field, const GValue * value, gpointer ptr)
272 GString *str = (GString *) ptr;
273 gchar *value_str = gst_value_serialize (value);
274 gchar *esc_value_str;
276 /* some enums can become really long */
277 if (strlen (value_str) > 25) {
281 value_str[25] = '\0';
283 /* mirror any brackets and quotes */
284 if (value_str[0] == '<')
285 value_str[pos--] = '>';
286 if (value_str[0] == '[')
287 value_str[pos--] = ']';
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--] = '"';
295 value_str[pos--] = ' ';
297 value_str[pos--] = '.';
298 value_str[pos--] = '.';
299 value_str[pos--] = '.';
301 esc_value_str = g_strescape (value_str, NULL);
303 g_string_append_printf (str, " %18s: %s\\l", g_quark_to_string (field),
307 g_free (esc_value_str);
312 debug_dump_describe_caps (GstCaps * caps, GstDebugGraphDetails details)
316 if (details & GST_DEBUG_GRAPH_SHOW_CAPS_DETAILS) {
318 if (gst_caps_is_any (caps) || gst_caps_is_empty (caps)) {
319 media = gst_caps_to_string (caps);
326 for (i = 0; i < gst_caps_get_size (caps); i++) {
328 STRUCTURE_ESTIMATED_STRING_LEN (gst_caps_get_structure (caps, i));
331 str = g_string_sized_new (slen);
332 for (i = 0; i < gst_caps_get_size (caps); i++) {
333 GstStructure *structure = gst_caps_get_structure (caps, i);
335 g_string_append (str, gst_structure_get_name (structure));
336 g_string_append (str, "\\l");
338 gst_structure_foreach (structure, string_append_field, (gpointer) str);
341 media = g_string_free (str, FALSE);
345 if (GST_CAPS_IS_SIMPLE (caps))
347 g_strdup (gst_structure_get_name (gst_caps_get_structure (caps, 0)));
349 media = g_strdup ("*");
355 debug_dump_element_pad_link (GstPad * pad, GstElement * element,
356 GstDebugGraphDetails details, FILE * out, const gint indent)
358 GstElement *peer_element;
360 GstCaps *caps, *peer_caps;
362 gchar *media_src = NULL, *media_sink = NULL;
363 gchar *pad_name, *element_name;
364 gchar *peer_pad_name, *peer_element_name;
365 const gchar *spc = &spaces[MAX (sizeof (spaces) - (1 + indent * 2), 0)];
367 if ((peer_pad = gst_pad_get_peer (pad))) {
368 if ((details & GST_DEBUG_GRAPH_SHOW_MEDIA_TYPE) ||
369 (details & GST_DEBUG_GRAPH_SHOW_CAPS_DETAILS)
371 caps = gst_pad_get_current_caps (pad);
373 caps = gst_pad_get_pad_template_caps (pad);
374 peer_caps = gst_pad_get_current_caps (peer_pad);
376 peer_caps = gst_pad_get_pad_template_caps (peer_pad);
378 media = debug_dump_describe_caps (caps, details);
379 /* check if peer caps are different */
380 if (peer_caps && !gst_caps_is_equal (caps, peer_caps)) {
383 tmp = debug_dump_describe_caps (peer_caps, details);
384 if (gst_pad_get_direction (pad) == GST_PAD_SRC) {
393 gst_caps_unref (peer_caps);
394 gst_caps_unref (caps);
397 pad_name = debug_dump_make_object_name (GST_OBJECT (pad));
399 element_name = debug_dump_make_object_name (GST_OBJECT (element));
401 element_name = g_strdup ("");
403 peer_pad_name = debug_dump_make_object_name (GST_OBJECT (peer_pad));
404 if ((peer_element = gst_pad_get_parent_element (peer_pad))) {
406 debug_dump_make_object_name (GST_OBJECT (peer_element));
408 peer_element_name = g_strdup ("");
413 fprintf (out, "%s%s_%s -> %s_%s [label=\"%s\"]\n", spc,
414 element_name, pad_name, peer_element_name, peer_pad_name, media);
416 } else if (media_src && media_sink) {
417 /* dot has some issues with placement of head and taillabels,
418 * we need an empty label to make space */
419 fprintf (out, "%s%s_%s -> %s_%s [labeldistance=\"10\", labelangle=\"0\", "
421 "taillabel=\"%s\", headlabel=\"%s\"]\n",
422 spc, element_name, pad_name, peer_element_name, peer_pad_name,
423 media_src, media_sink);
427 fprintf (out, "%s%s_%s -> %s_%s\n", spc,
428 element_name, pad_name, peer_element_name, peer_pad_name);
432 g_free (element_name);
433 g_free (peer_pad_name);
434 g_free (peer_element_name);
436 gst_object_unref (peer_element);
437 gst_object_unref (peer_pad);
442 debug_dump_element_pads (GstIterator * pad_iter, GstPad * pad,
443 GstElement * element, GstDebugGraphDetails details, FILE * out,
444 const gint indent, guint * src_pads, guint * sink_pads)
446 GValue item = { 0, };
452 switch (gst_iterator_next (pad_iter, &item)) {
453 case GST_ITERATOR_OK:
454 pad = g_value_get_object (&item);
455 debug_dump_element_pad (pad, element, details, out, indent);
456 dir = gst_pad_get_direction (pad);
457 if (dir == GST_PAD_SRC)
459 else if (dir == GST_PAD_SINK)
461 g_value_reset (&item);
463 case GST_ITERATOR_RESYNC:
464 gst_iterator_resync (pad_iter);
466 case GST_ITERATOR_ERROR:
467 case GST_ITERATOR_DONE:
475 * debug_dump_element:
476 * @bin: the bin that should be analyzed
477 * @out: file to write to
478 * @indent: level of graph indentation
480 * Helper for gst_debug_bin_to_dot_file() to recursively dump a pipeline.
483 debug_dump_element (GstBin * bin, GstDebugGraphDetails details, FILE * out,
486 GstIterator *element_iter, *pad_iter;
487 gboolean elements_done, pads_done;
488 GValue item = { 0, };
489 GValue item2 = { 0, };
492 guint src_pads, sink_pads;
494 gchar *state_name = NULL;
495 gchar *param_name = NULL;
496 const gchar *spc = &spaces[MAX (sizeof (spaces) - (1 + indent * 2), 0)];
498 element_iter = gst_bin_iterate_elements (bin);
499 elements_done = FALSE;
500 while (!elements_done) {
501 switch (gst_iterator_next (element_iter, &item)) {
502 case GST_ITERATOR_OK:
503 element = g_value_get_object (&item);
504 element_name = debug_dump_make_object_name (GST_OBJECT (element));
506 if (details & GST_DEBUG_GRAPH_SHOW_STATES) {
507 state_name = debug_dump_get_element_state (GST_ELEMENT (element));
509 if (details & GST_DEBUG_GRAPH_SHOW_NON_DEFAULT_PARAMS) {
510 param_name = debug_dump_get_element_params (GST_ELEMENT (element));
513 fprintf (out, "%ssubgraph cluster_%s {\n", spc, element_name);
514 fprintf (out, "%s fontname=\"Bitstream Vera Sans\";\n", spc);
515 fprintf (out, "%s fontsize=\"8\";\n", spc);
516 fprintf (out, "%s style=filled;\n", spc);
517 fprintf (out, "%s color=black;\n\n", spc);
518 fprintf (out, "%s label=\"%s\\n%s%s%s\";\n", spc,
519 G_OBJECT_TYPE_NAME (element), GST_OBJECT_NAME (element),
520 (state_name ? state_name : ""), (param_name ? param_name : "")
530 g_free (element_name);
532 src_pads = sink_pads = 0;
533 if ((pad_iter = gst_element_iterate_sink_pads (element))) {
534 debug_dump_element_pads (pad_iter, pad, element, details, out, indent,
535 &src_pads, &sink_pads);
536 gst_iterator_free (pad_iter);
538 if ((pad_iter = gst_element_iterate_src_pads (element))) {
539 debug_dump_element_pads (pad_iter, pad, element, details, out, indent,
540 &src_pads, &sink_pads);
541 gst_iterator_free (pad_iter);
543 if (GST_IS_BIN (element)) {
544 fprintf (out, "%s fillcolor=\"#ffffff\";\n", spc);
546 debug_dump_element (GST_BIN (element), details, out, indent + 1);
548 if (src_pads && !sink_pads)
549 fprintf (out, "%s fillcolor=\"#ffaaaa\";\n", spc);
550 else if (!src_pads && sink_pads)
551 fprintf (out, "%s fillcolor=\"#aaaaff\";\n", spc);
552 else if (src_pads && sink_pads)
553 fprintf (out, "%s fillcolor=\"#aaffaa\";\n", spc);
555 fprintf (out, "%s fillcolor=\"#ffffff\";\n", spc);
557 fprintf (out, "%s}\n\n", spc);
558 if ((pad_iter = gst_element_iterate_pads (element))) {
561 switch (gst_iterator_next (pad_iter, &item2)) {
562 case GST_ITERATOR_OK:
563 pad = g_value_get_object (&item2);
564 if (gst_pad_is_linked (pad)) {
565 if (gst_pad_get_direction (pad) == GST_PAD_SRC) {
566 debug_dump_element_pad_link (pad, element, details, out,
569 GstPad *peer_pad = gst_pad_get_peer (pad);
572 if (!GST_IS_GHOST_PAD (peer_pad)
573 && GST_IS_PROXY_PAD (peer_pad)) {
574 debug_dump_element_pad_link (peer_pad, NULL, details,
577 gst_object_unref (peer_pad);
581 g_value_reset (&item2);
583 case GST_ITERATOR_RESYNC:
584 gst_iterator_resync (pad_iter);
586 case GST_ITERATOR_ERROR:
587 case GST_ITERATOR_DONE:
592 g_value_unset (&item2);
593 gst_iterator_free (pad_iter);
595 g_value_reset (&item);
597 case GST_ITERATOR_RESYNC:
598 gst_iterator_resync (element_iter);
600 case GST_ITERATOR_ERROR:
601 case GST_ITERATOR_DONE:
602 elements_done = TRUE;
607 g_value_unset (&item);
608 gst_iterator_free (element_iter);
612 * gst_debug_bin_to_dot_file:
613 * @bin: the top-level pipeline that should be analyzed
614 * @file_name: output base filename (e.g. "myplayer")
616 * To aid debugging applications one can use this method to write out the whole
617 * network of gstreamer elements that form the pipeline into an dot file.
618 * This file can be processed with graphviz to get an image.
619 * <informalexample><programlisting>
620 * dot -Tpng -oimage.png graph_lowlevel.dot
621 * </programlisting></informalexample>
624 gst_debug_bin_to_dot_file (GstBin * bin, GstDebugGraphDetails details,
625 const gchar * file_name)
627 gchar *full_file_name = NULL;
630 g_return_if_fail (GST_IS_BIN (bin));
632 if (G_LIKELY (priv_gst_dump_dot_dir == NULL))
636 file_name = g_get_application_name ();
638 file_name = "unnamed";
641 full_file_name = g_strdup_printf ("%s" G_DIR_SEPARATOR_S "%s.dot",
642 priv_gst_dump_dot_dir, file_name);
644 if ((out = fopen (full_file_name, "wb"))) {
645 gchar *state_name = NULL;
646 gchar *param_name = NULL;
648 if (details & GST_DEBUG_GRAPH_SHOW_STATES) {
649 state_name = debug_dump_get_element_state (GST_ELEMENT (bin));
651 if (details & GST_DEBUG_GRAPH_SHOW_NON_DEFAULT_PARAMS) {
652 param_name = debug_dump_get_element_params (GST_ELEMENT (bin));
657 "digraph pipeline {\n"
659 " fontname=\"sans\";\n"
660 " fontsize=\"10\";\n"
664 " label=\"<%s>\\n%s%s%s\";\n"
665 " node [style=filled, shape=box, fontsize=\"9\", fontname=\"sans\", margin=\"0.0,0.0\"];\n"
666 " edge [labelfontsize=\"6\", fontsize=\"9\", fontname=\"monospace\"];\n"
670 " margin=\"0.05,0.05\",\n"
671 " 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,"
673 "\n", G_OBJECT_TYPE_NAME (bin), GST_OBJECT_NAME (bin),
674 (state_name ? state_name : ""), (param_name ? param_name : "")
681 debug_dump_element (bin, details, out, 1);
684 fprintf (out, "}\n");
686 GST_INFO ("wrote bin graph to : '%s'", full_file_name);
688 GST_WARNING ("Failed to open file '%s' for writing: %s", full_file_name,
691 g_free (full_file_name);
695 * gst_debug_bin_to_dot_file_with_ts:
696 * @bin: the top-level pipeline that should be analyzed
697 * @file_name: output base filename (e.g. "myplayer")
699 * This works like gst_debug_bin_to_dot_file(), but adds the current timestamp
700 * to the filename, so that it can be used to take multiple snapshots.
703 gst_debug_bin_to_dot_file_with_ts (GstBin * bin,
704 GstDebugGraphDetails details, const gchar * file_name)
706 gchar *ts_file_name = NULL;
707 GstClockTime elapsed;
709 g_return_if_fail (GST_IS_BIN (bin));
712 file_name = g_get_application_name ();
714 file_name = "unnamed";
718 elapsed = GST_CLOCK_DIFF (_priv_gst_info_start_time,
719 gst_util_get_timestamp ());
721 /* we don't use GST_TIME_FORMAT as such filenames would fail on some
722 * filesystems like fat */
724 g_strdup_printf ("%u.%02u.%02u.%09u-%s", GST_TIME_ARGS (elapsed),
727 gst_debug_bin_to_dot_file (bin, details, ts_file_name);
728 g_free (ts_file_name);
730 #else /* !GST_DISABLE_GST_DEBUG */
731 #ifndef GST_REMOVE_DISABLED
733 gst_debug_bin_to_dot_file (GstBin * bin, GstDebugGraphDetails details,
734 const gchar * file_name)
739 gst_debug_bin_to_dot_file_with_ts (GstBin * bin, GstDebugGraphDetails details,
740 const gchar * file_name)
743 #endif /* GST_REMOVE_DISABLED */
744 #endif /* GST_DISABLE_GST_DEBUG */