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 FILE * out, const gint indent)
142 GstPadTemplate *pad_templ;
143 GstPadPresence presence;
144 gchar *pad_name, *style_name;
146 const gchar *activation_mode = "-><";
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 if (presence == GST_PAD_SOMETIMES) {
156 style_name = "filled,dotted";
157 } else if (presence == GST_PAD_REQUEST) {
158 style_name = "filled,dashed";
161 /* check if pad flags */
162 pad_flags[0] = GST_OBJECT_FLAG_IS_SET (pad, GST_PAD_BLOCKED) ? 'B' : 'b';
163 pad_flags[1] = GST_OBJECT_FLAG_IS_SET (pad, GST_PAD_FLUSHING) ? 'F' : 'f';
164 pad_flags[2] = GST_OBJECT_FLAG_IS_SET (pad, GST_PAD_IN_GETCAPS) ? 'G' : 'g';
165 pad_flags[3] = GST_OBJECT_FLAG_IS_SET (pad, GST_PAD_IN_SETCAPS) ? 's' : 's';
166 pad_flags[4] = GST_OBJECT_FLAG_IS_SET (pad, GST_PAD_BLOCKING) ? 'B' : 'b';
169 fprintf (out, "%s %s_%s [color=black, fillcolor=\"%s\", label=\"%s\\n[%c][%s]\", height=\"0.2\", style=\"%s\"];\n", spc, element_name, pad_name, color_name, GST_OBJECT_NAME (pad), activation_mode[pad->mode], /* NONE/PUSH/PULL */
170 pad_flags, style_name);
176 debug_dump_element_pad (GstPad * pad, GstElement * element,
177 GstDebugGraphDetails details, FILE * out, const gint indent)
179 GstElement *target_element;
180 GstPad *target_pad, *tmp_pad;
183 gchar *target_element_name;
186 dir = gst_pad_get_direction (pad);
187 element_name = debug_dump_make_object_name (GST_OBJECT (element));
188 if (GST_IS_GHOST_PAD (pad)) {
190 (dir == GST_PAD_SRC) ? "#ffdddd" : ((dir ==
191 GST_PAD_SINK) ? "#ddddff" : "#ffffff");
192 /* output target-pad so that it belongs to this element */
193 if ((tmp_pad = gst_ghost_pad_get_target (GST_GHOST_PAD (pad)))) {
194 if ((target_pad = gst_pad_get_peer (tmp_pad))) {
195 if ((target_element = gst_pad_get_parent_element (target_pad))) {
196 target_element_name =
197 debug_dump_make_object_name (GST_OBJECT (target_element));
199 target_element_name = "";
201 debug_dump_pad (target_pad, color_name, target_element_name, out,
203 if (target_element) {
204 g_free (target_element_name);
205 gst_object_unref (target_element);
207 gst_object_unref (target_pad);
209 gst_object_unref (tmp_pad);
213 (dir == GST_PAD_SRC) ? "#ffaaaa" : ((dir ==
214 GST_PAD_SINK) ? "#aaaaff" : "#cccccc");
217 debug_dump_pad (pad, color_name, element_name, out, indent);
218 g_free (element_name);
222 string_append_field (GQuark field, const GValue * value, gpointer ptr)
224 GString *str = (GString *) ptr;
225 gchar *value_str = gst_value_serialize (value);
227 /* some enums can become really long */
228 if (strlen (value_str) > 25) {
232 value_str[25] = '\0';
234 /* mirror any brackets */
235 if (value_str[0] == '<')
236 value_str[pos--] = '>';
237 if (value_str[0] == '[')
238 value_str[pos--] = ']';
239 if (value_str[0] == '(')
240 value_str[pos--] = ')';
241 if (value_str[0] == '{')
242 value_str[pos--] = '}';
244 value_str[pos--] = ' ';
246 value_str[pos--] = '.';
247 value_str[pos--] = '.';
248 value_str[pos--] = '.';
250 g_string_append_printf (str, " %18s: %s\\l", g_quark_to_string (field),
258 debug_dump_describe_caps (GstCaps * caps, GstDebugGraphDetails details,
259 gboolean * need_free)
263 if (details & GST_DEBUG_GRAPH_SHOW_CAPS_DETAILS) {
265 if (gst_caps_is_any (caps) || gst_caps_is_empty (caps)) {
266 media = gst_caps_to_string (caps);
274 for (i = 0; i < gst_caps_get_size (caps); i++) {
276 STRUCTURE_ESTIMATED_STRING_LEN (gst_caps_get_structure (caps, i));
279 str = g_string_sized_new (slen);
280 for (i = 0; i < gst_caps_get_size (caps); i++) {
281 GstStructure *structure = gst_caps_get_structure (caps, i);
283 g_string_append (str, gst_structure_get_name (structure));
284 g_string_append (str, "\\l");
286 gst_structure_foreach (structure, string_append_field, (gpointer) str);
289 media = g_string_free (str, FALSE);
294 if (GST_CAPS_IS_SIMPLE (caps))
296 (gchar *) gst_structure_get_name (gst_caps_get_structure (caps, 0));
305 debug_dump_element_pad_link (GstPad * pad, GstElement * element,
306 GstDebugGraphDetails details, FILE * out, const gint indent)
308 GstElement *peer_element, *target_element;
309 GstPad *peer_pad, *target_pad, *tmp_pad;
310 GstCaps *caps, *peer_caps;
311 gboolean free_caps, free_peer_caps;
312 gboolean free_media, free_media_src, free_media_sink;
314 gchar *media_src = NULL, *media_sink = NULL;
315 gchar *pad_name, *element_name;
316 gchar *peer_pad_name, *peer_element_name;
317 gchar *target_pad_name, *target_element_name;
318 const gchar *spc = &spaces[MAX (sizeof (spaces) - (1 + indent * 2), 0)];
320 if ((peer_pad = gst_pad_get_peer (pad))) {
321 free_media = free_media_src = free_media_sink = FALSE;
322 if ((details & GST_DEBUG_GRAPH_SHOW_MEDIA_TYPE) ||
323 (details & GST_DEBUG_GRAPH_SHOW_CAPS_DETAILS)
325 if ((caps = gst_pad_get_negotiated_caps (pad))) {
329 if (!(caps = (GstCaps *)
330 gst_pad_get_pad_template_caps (pad))) {
331 /* this should not happen */
335 if ((peer_caps = gst_pad_get_negotiated_caps (peer_pad))) {
336 free_peer_caps = TRUE;
338 free_peer_caps = FALSE;
339 peer_caps = (GstCaps *) gst_pad_get_pad_template_caps (peer_pad);
342 media = debug_dump_describe_caps (caps, details, &free_media);
343 /* check if peer caps are different */
344 if (peer_caps && !gst_caps_is_equal (caps, peer_caps)) {
348 tmp = debug_dump_describe_caps (peer_caps, details, &free_tmp);
349 if (gst_pad_get_direction (pad) == GST_PAD_SRC) {
351 free_media_src = free_media;
353 free_media_sink = free_tmp;
356 free_media_src = free_tmp;
358 free_media_sink = free_media;
364 gst_caps_unref (caps);
367 if (free_peer_caps && peer_caps) {
368 gst_caps_unref (peer_caps);
372 pad_name = debug_dump_make_object_name (GST_OBJECT (pad));
374 element_name = debug_dump_make_object_name (GST_OBJECT (element));
378 peer_pad_name = debug_dump_make_object_name (GST_OBJECT (peer_pad));
379 if ((peer_element = gst_pad_get_parent_element (peer_pad))) {
381 debug_dump_make_object_name (GST_OBJECT (peer_element));
383 peer_element_name = "";
386 if (GST_IS_GHOST_PAD (pad)) {
387 if ((tmp_pad = gst_ghost_pad_get_target (GST_GHOST_PAD (pad)))) {
388 if ((target_pad = gst_pad_get_peer (tmp_pad))) {
390 debug_dump_make_object_name (GST_OBJECT (target_pad));
391 if ((target_element = gst_pad_get_parent_element (target_pad))) {
392 target_element_name =
393 debug_dump_make_object_name (GST_OBJECT (target_element));
395 target_element_name = "";
397 /* src ghostpad relationship */
398 fprintf (out, "%s%s_%s -> %s_%s [style=dashed, minlen=0]\n", spc,
399 target_element_name, target_pad_name, element_name, pad_name);
401 g_free (target_pad_name);
402 if (target_element) {
403 g_free (target_element_name);
404 gst_object_unref (target_element);
406 gst_object_unref (target_pad);
408 gst_object_unref (tmp_pad);
411 if (GST_IS_GHOST_PAD (peer_pad)) {
412 if ((tmp_pad = gst_ghost_pad_get_target (GST_GHOST_PAD (peer_pad)))) {
413 if ((target_pad = gst_pad_get_peer (tmp_pad))) {
415 debug_dump_make_object_name (GST_OBJECT (target_pad));
416 if ((target_element = gst_pad_get_parent_element (target_pad))) {
417 target_element_name =
418 debug_dump_make_object_name (GST_OBJECT (target_element));
420 target_element_name = "";
422 /* sink ghostpad relationship */
423 fprintf (out, "%s%s_%s -> %s_%s [style=dashed, minlen=0]\n", spc,
424 peer_element_name, peer_pad_name,
425 target_element_name, target_pad_name);
426 /* FIXME: we are missing links from the proxy pad
427 * theoretically we need to:
428 * pad=gst_object_ref(target_pad);
429 * goto line 280: if ((peer_pad = gst_pad_get_peer (pad)))
430 * as this would be ugly we need to refactor ...
432 debug_dump_element_pad_link (target_pad, target_element, details, out,
434 g_free (target_pad_name);
435 if (target_element) {
436 g_free (target_element_name);
437 gst_object_unref (target_element);
439 gst_object_unref (target_pad);
441 gst_object_unref (tmp_pad);
447 fprintf (out, "%s%s_%s -> %s_%s [label=\"%s\"]\n", spc,
448 element_name, pad_name, peer_element_name, peer_pad_name, media);
452 } else if (media_src && media_sink) {
453 /* dot has some issues with placement of head and taillabels,
454 * we need an empty label to make space */
455 fprintf (out, "%s%s_%s -> %s_%s [labeldistance=\"10\", labelangle=\"0\", "
457 "headlabel=\"%s\", taillabel=\"%s\"]\n",
458 spc, element_name, pad_name, peer_element_name, peer_pad_name,
459 media_src, media_sink);
465 fprintf (out, "%s%s_%s -> %s_%s\n", spc,
466 element_name, pad_name, peer_element_name, peer_pad_name);
471 g_free (element_name);
473 g_free (peer_pad_name);
475 g_free (peer_element_name);
476 gst_object_unref (peer_element);
478 gst_object_unref (peer_pad);
483 * debug_dump_element:
484 * @bin: the bin that should be analyzed
485 * @out: file to write to
486 * @indent: level of graph indentation
488 * Helper for _gst_debug_bin_to_dot_file() to recursively dump a pipeline.
491 debug_dump_element (GstBin * bin, GstDebugGraphDetails details, FILE * out,
494 GstIterator *element_iter, *pad_iter;
495 gboolean elements_done, pads_done;
499 guint src_pads, sink_pads;
501 gchar *state_name = NULL;
502 gchar *param_name = NULL;
503 const gchar *spc = &spaces[MAX (sizeof (spaces) - (1 + indent * 2), 0)];
505 element_iter = gst_bin_iterate_elements (bin);
506 elements_done = FALSE;
507 while (!elements_done) {
508 switch (gst_iterator_next (element_iter, (gpointer) & element)) {
509 case GST_ITERATOR_OK:
510 element_name = debug_dump_make_object_name (GST_OBJECT (element));
512 if (details & GST_DEBUG_GRAPH_SHOW_STATES) {
513 state_name = debug_dump_get_element_state (GST_ELEMENT (element));
515 if (details & GST_DEBUG_GRAPH_SHOW_NON_DEFAULT_PARAMS) {
516 param_name = debug_dump_get_element_params (GST_ELEMENT (element));
519 fprintf (out, "%ssubgraph cluster_%s {\n", spc, element_name);
520 fprintf (out, "%s fontname=\"Bitstream Vera Sans\";\n", spc);
521 fprintf (out, "%s fontsize=\"8\";\n", spc);
522 fprintf (out, "%s style=filled;\n", spc);
523 fprintf (out, "%s color=black;\n\n", spc);
524 fprintf (out, "%s label=\"%s\\n%s%s%s\";\n", spc,
525 G_OBJECT_TYPE_NAME (element), GST_OBJECT_NAME (element),
526 (state_name ? state_name : ""), (param_name ? param_name : "")
536 g_free (element_name);
538 src_pads = sink_pads = 0;
539 if ((pad_iter = gst_element_iterate_pads (element))) {
542 switch (gst_iterator_next (pad_iter, (gpointer) & pad)) {
543 case GST_ITERATOR_OK:
544 debug_dump_element_pad (pad, element, details, out, indent);
545 dir = gst_pad_get_direction (pad);
546 if (dir == GST_PAD_SRC)
548 else if (dir == GST_PAD_SINK)
550 gst_object_unref (pad);
552 case GST_ITERATOR_RESYNC:
553 gst_iterator_resync (pad_iter);
555 case GST_ITERATOR_ERROR:
556 case GST_ITERATOR_DONE:
561 gst_iterator_free (pad_iter);
563 if (GST_IS_BIN (element)) {
564 fprintf (out, "%s fillcolor=\"#ffffff\";\n", spc);
566 debug_dump_element (GST_BIN (element), details, out, indent + 1);
568 if (src_pads && !sink_pads)
569 fprintf (out, "%s fillcolor=\"#ffaaaa\";\n", spc);
570 else if (!src_pads && sink_pads)
571 fprintf (out, "%s fillcolor=\"#aaaaff\";\n", spc);
572 else if (src_pads && sink_pads)
573 fprintf (out, "%s fillcolor=\"#aaffaa\";\n", spc);
575 fprintf (out, "%s fillcolor=\"#ffffff\";\n", spc);
577 fprintf (out, "%s}\n\n", spc);
578 if ((pad_iter = gst_element_iterate_pads (element))) {
581 switch (gst_iterator_next (pad_iter, (gpointer) & pad)) {
582 case GST_ITERATOR_OK:
583 if (gst_pad_is_linked (pad)
584 && gst_pad_get_direction (pad) == GST_PAD_SRC) {
585 debug_dump_element_pad_link (pad, element, details, out,
588 gst_object_unref (pad);
590 case GST_ITERATOR_RESYNC:
591 gst_iterator_resync (pad_iter);
593 case GST_ITERATOR_ERROR:
594 case GST_ITERATOR_DONE:
599 gst_iterator_free (pad_iter);
601 gst_object_unref (element);
603 case GST_ITERATOR_RESYNC:
604 gst_iterator_resync (element_iter);
606 case GST_ITERATOR_ERROR:
607 case GST_ITERATOR_DONE:
608 elements_done = TRUE;
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"
671 "\n", G_OBJECT_TYPE_NAME (bin), GST_OBJECT_NAME (bin),
672 (state_name ? state_name : ""), (param_name ? param_name : "")
679 debug_dump_element (bin, details, out, 1);
682 fprintf (out, "}\n");
684 GST_INFO ("wrote bin graph to : '%s'", full_file_name);
686 GST_WARNING ("Failed to open file '%s' for writing: %s", full_file_name,
689 g_free (full_file_name);
693 * _gst_debug_bin_to_dot_file_with_ts:
694 * @bin: the top-level pipeline that should be analyzed
695 * @file_name: output base filename (e.g. "myplayer")
697 * This works like _gst_debug_bin_to_dot_file(), but adds the current timestamp
698 * to the filename, so that it can be used to take multiple snapshots.
701 _gst_debug_bin_to_dot_file_with_ts (GstBin * bin, GstDebugGraphDetails details,
702 const gchar * file_name)
704 gchar *ts_file_name = NULL;
705 GstClockTime elapsed;
707 g_return_if_fail (GST_IS_BIN (bin));
710 file_name = g_get_application_name ();
712 file_name = "unnamed";
716 elapsed = GST_CLOCK_DIFF (_priv_gst_info_start_time,
717 gst_util_get_timestamp ());
719 /* we don't use GST_TIME_FORMAT as such filenames would fail on some
720 * filesystems like fat */
722 g_strdup_printf ("%u.%02u.%02u.%09u-%s", GST_TIME_ARGS (elapsed),
725 _gst_debug_bin_to_dot_file (bin, details, ts_file_name);
726 g_free (ts_file_name);
728 #else /* !GST_DISABLE_GST_DEBUG */
729 #ifndef GST_REMOVE_DISABLED
731 _gst_debug_bin_to_dot_file (GstBin * bin, GstDebugGraphDetails details,
732 const gchar * file_name)
737 _gst_debug_bin_to_dot_file_with_ts (GstBin * bin, GstDebugGraphDetails details,
738 const gchar * file_name)
741 #endif /* GST_REMOVE_DISABLED */
742 #endif /* GST_DISABLE_GST_DEBUG */