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 #define PARAM_MAX_LENGTH 80
61 const gchar spaces[] = {
68 #define MAKE_INDENT(indent) \
69 &spaces[MAX (sizeof (spaces) - (1 + (indent) * 2), 0)]
72 debug_dump_make_object_name (GstObject * obj)
74 return g_strcanon (g_strdup_printf ("%s_%p", GST_OBJECT_NAME (obj), obj),
75 G_CSET_A_2_Z G_CSET_a_2_z G_CSET_DIGITS "_", '_');
79 debug_dump_get_element_state (GstElement * element)
81 gchar *state_name = NULL;
82 const gchar *state_icons = "~0-=>";
83 GstState state = GST_STATE_VOID_PENDING, pending = GST_STATE_VOID_PENDING;
85 gst_element_get_state (element, &state, &pending, 0);
86 if (pending == GST_STATE_VOID_PENDING) {
87 gboolean is_locked = gst_element_is_locked_state (element);
88 state_name = g_strdup_printf ("\\n[%c]%s", state_icons[state],
89 (is_locked ? "(locked)" : ""));
91 state_name = g_strdup_printf ("\\n[%c] -> [%c]", state_icons[state],
92 state_icons[pending]);
98 debug_dump_get_object_params (GObject * object,
99 GstDebugGraphDetails details, const char *const *ignored_propnames)
101 gchar *param_name = NULL;
102 GParamSpec **properties, *property;
103 GValue value = { 0, };
104 guint i, number_of_properties;
105 gchar *tmp, *value_str;
106 const gchar *ellipses;
108 /* get paramspecs and show non-default properties */
110 g_object_class_list_properties (G_OBJECT_GET_CLASS (object),
111 &number_of_properties);
113 for (i = 0; i < number_of_properties; i++) {
115 gboolean ignore = FALSE;
116 property = properties[i];
118 /* skip some properties */
119 if (!(property->flags & G_PARAM_READABLE))
121 if (!strcmp (property->name, "name"))
124 if (ignored_propnames)
125 for (j = 0; ignored_propnames[j]; j++)
126 if (!g_strcmp0 (ignored_propnames[j], property->name))
132 g_value_init (&value, property->value_type);
133 g_object_get_property (G_OBJECT (object), property->name, &value);
134 if (!(g_param_value_defaults (property, &value))) {
135 /* we need to serialise enums and flags ourselves to make sure the
136 * enum/flag nick is used and not the enum/flag name, which would be the
137 * C header enum/flag for public enums/flags, but for element-specific
138 * enums/flags we abuse the name field for the property description,
139 * and we don't want to print that in the dot file. The nick will
140 * always work, and it's also shorter. */
141 if (G_VALUE_HOLDS_ENUM (&value)) {
142 GEnumClass *e_class = g_type_class_ref (G_VALUE_TYPE (&value));
146 e_val = g_value_get_enum (&value);
147 for (idx = 0; idx < e_class->n_values; ++idx) {
148 if (e_class->values[idx].value == e_val) {
149 tmp = g_strdup (e_class->values[idx].value_nick);
155 } else if (G_VALUE_HOLDS_FLAGS (&value)) {
156 GFlagsClass *f_class = g_type_class_ref (G_VALUE_TYPE (&value));
157 GFlagsValue *vals = f_class->values;
159 guint idx, flags_left;
161 s = g_string_new (NULL);
163 /* we assume the values are sorted from lowest to highest value */
164 flags_left = g_value_get_flags (&value);
165 idx = f_class->n_values;
168 if (vals[idx].value != 0
169 && (flags_left & vals[idx].value) == vals[idx].value) {
171 g_string_prepend_c (s, '+');
172 g_string_prepend (s, vals[idx].value_nick);
173 flags_left -= vals[idx].value;
180 g_string_assign (s, "(none)");
182 tmp = g_string_free (s, FALSE);
184 tmp = g_strdup_value_contents (&value);
186 value_str = g_strescape (tmp, NULL);
189 /* too long, ellipsize */
190 if (!(details & GST_DEBUG_GRAPH_SHOW_FULL_PARAMS) &&
191 strlen (value_str) > PARAM_MAX_LENGTH)
201 if (details & GST_DEBUG_GRAPH_SHOW_FULL_PARAMS) {
202 param_name = g_strdup_printf ("%s\\n%s=%s", tmp, property->name,
205 param_name = g_strdup_printf ("%s\\n%s=%."
206 G_STRINGIFY (PARAM_MAX_LENGTH) "s%s", tmp, property->name,
207 value_str, ellipses);
215 g_value_unset (&value);
223 debug_dump_pad (GstPad * pad, const gchar * color_name,
224 const gchar * element_name, GstDebugGraphDetails details, GString * str,
227 GstPadTemplate *pad_templ;
228 GstPadPresence presence;
229 gchar *pad_name, *param_name = NULL;
230 const gchar *style_name;
231 static const char *const ignore_propnames[] =
232 { "parent", "direction", "template",
235 const gchar *spc = MAKE_INDENT (indent);
237 pad_name = debug_dump_make_object_name (GST_OBJECT (pad));
239 /* pad availability */
240 style_name = "filled,solid";
241 if ((pad_templ = gst_pad_get_pad_template (pad))) {
242 presence = GST_PAD_TEMPLATE_PRESENCE (pad_templ);
243 gst_object_unref (pad_templ);
244 if (presence == GST_PAD_SOMETIMES) {
245 style_name = "filled,dotted";
246 } else if (presence == GST_PAD_REQUEST) {
247 style_name = "filled,dashed";
252 debug_dump_get_object_params (G_OBJECT (pad), details, ignore_propnames);
253 if (details & GST_DEBUG_GRAPH_SHOW_STATES) {
255 const gchar *activation_mode = "-><";
256 const gchar *task_mode = "";
259 GST_OBJECT_LOCK (pad);
260 task = GST_PAD_TASK (pad);
262 switch (gst_task_get_state (task)) {
263 case GST_TASK_STARTED:
266 case GST_TASK_PAUSED:
270 /* Invalid task state, ignoring */
274 GST_OBJECT_UNLOCK (pad);
276 /* check if pad flags */
278 GST_OBJECT_FLAG_IS_SET (pad, GST_PAD_FLAG_BLOCKED) ? 'B' : 'b';
280 GST_OBJECT_FLAG_IS_SET (pad, GST_PAD_FLAG_FLUSHING) ? 'F' : 'f';
282 GST_OBJECT_FLAG_IS_SET (pad, GST_PAD_FLAG_BLOCKING) ? 'B' : 'b';
285 g_string_append_printf (str,
286 "%s %s_%s [color=black, fillcolor=\"%s\", label=\"%s%s\\n[%c][%s]%s\", height=\"0.2\", style=\"%s\"];\n",
287 spc, element_name, pad_name, color_name, GST_OBJECT_NAME (pad),
288 (param_name ? param_name : ""),
289 activation_mode[pad->mode], pad_flags, task_mode, style_name);
291 g_string_append_printf (str,
292 "%s %s_%s [color=black, fillcolor=\"%s\", label=\"%s%s\", height=\"0.2\", style=\"%s\"];\n",
293 spc, element_name, pad_name, color_name, GST_OBJECT_NAME (pad),
294 (param_name ? param_name : ""), style_name);
302 debug_dump_element_pad (GstPad * pad, GstElement * element,
303 GstDebugGraphDetails details, GString * str, const gint indent)
305 GstElement *target_element;
306 GstPad *target_pad, *tmp_pad;
309 gchar *target_element_name;
310 const gchar *color_name;
312 dir = gst_pad_get_direction (pad);
313 element_name = debug_dump_make_object_name (GST_OBJECT (element));
314 if (GST_IS_GHOST_PAD (pad)) {
316 (dir == GST_PAD_SRC) ? "#ffdddd" : ((dir ==
317 GST_PAD_SINK) ? "#ddddff" : "#ffffff");
318 /* output target-pad so that it belongs to this element */
319 if ((tmp_pad = gst_ghost_pad_get_target (GST_GHOST_PAD (pad)))) {
320 if ((target_pad = gst_pad_get_peer (tmp_pad))) {
321 gchar *pad_name, *target_pad_name;
322 const gchar *spc = MAKE_INDENT (indent);
324 if ((target_element = gst_pad_get_parent_element (target_pad))) {
325 target_element_name =
326 debug_dump_make_object_name (GST_OBJECT (target_element));
328 target_element_name = g_strdup ("");
330 debug_dump_pad (target_pad, color_name, target_element_name, details,
332 /* src ghostpad relationship */
333 pad_name = debug_dump_make_object_name (GST_OBJECT (pad));
334 target_pad_name = debug_dump_make_object_name (GST_OBJECT (target_pad));
335 if (dir == GST_PAD_SRC) {
336 g_string_append_printf (str,
337 "%s%s_%s -> %s_%s [style=dashed, minlen=0]\n", spc,
338 target_element_name, target_pad_name, element_name, pad_name);
340 g_string_append_printf (str,
341 "%s%s_%s -> %s_%s [style=dashed, minlen=0]\n", spc,
342 element_name, pad_name, target_element_name, target_pad_name);
344 g_free (target_pad_name);
345 g_free (target_element_name);
347 gst_object_unref (target_element);
348 gst_object_unref (target_pad);
351 gst_object_unref (tmp_pad);
355 (dir == GST_PAD_SRC) ? "#ffaaaa" : ((dir ==
356 GST_PAD_SINK) ? "#aaaaff" : "#cccccc");
359 debug_dump_pad (pad, color_name, element_name, details, str, indent);
360 g_free (element_name);
364 string_append_field (GQuark field, const GValue * value, gpointer ptr)
366 GString *str = (GString *) ptr;
367 gchar *value_str = gst_value_serialize (value);
368 gchar *esc_value_str;
370 if (value_str == NULL) {
371 g_string_append_printf (str, " %18s: NULL\\l", g_quark_to_string (field));
375 /* some enums can become really long */
376 if (strlen (value_str) > 25) {
380 value_str[25] = '\0';
382 /* mirror any brackets and quotes */
383 if (value_str[0] == '<')
384 value_str[pos--] = '>';
385 if (value_str[0] == '[')
386 value_str[pos--] = ']';
387 if (value_str[0] == '(')
388 value_str[pos--] = ')';
389 if (value_str[0] == '{')
390 value_str[pos--] = '}';
391 if (value_str[0] == '"')
392 value_str[pos--] = '"';
394 value_str[pos--] = ' ';
396 value_str[pos--] = '.';
397 value_str[pos--] = '.';
398 value_str[pos--] = '.';
400 esc_value_str = g_strescape (value_str, NULL);
402 g_string_append_printf (str, " %18s: %s\\l", g_quark_to_string (field),
406 g_free (esc_value_str);
411 debug_dump_describe_caps (GstCaps * caps, GstDebugGraphDetails details)
415 if (details & GST_DEBUG_GRAPH_SHOW_CAPS_DETAILS) {
417 if (gst_caps_is_any (caps) || gst_caps_is_empty (caps)) {
418 media = gst_caps_to_string (caps);
425 for (i = 0; i < gst_caps_get_size (caps); i++) {
427 STRUCTURE_ESTIMATED_STRING_LEN (gst_caps_get_structure (caps, i));
430 str = g_string_sized_new (slen);
431 for (i = 0; i < gst_caps_get_size (caps); i++) {
432 GstCapsFeatures *features = __gst_caps_get_features_unchecked (caps, i);
433 GstStructure *structure = gst_caps_get_structure (caps, i);
435 g_string_append (str, gst_structure_get_name (structure));
437 if (features && (gst_caps_features_is_any (features)
438 || !gst_caps_features_is_equal (features,
439 GST_CAPS_FEATURES_MEMORY_SYSTEM_MEMORY))) {
440 g_string_append_c (str, '(');
441 priv_gst_caps_features_append_to_gstring (features, str);
442 g_string_append_c (str, ')');
444 g_string_append (str, "\\l");
446 gst_structure_foreach (structure, string_append_field, (gpointer) str);
449 media = g_string_free (str, FALSE);
453 if (GST_CAPS_IS_SIMPLE (caps))
455 g_strdup (gst_structure_get_name (gst_caps_get_structure (caps, 0)));
457 media = g_strdup ("*");
463 debug_dump_element_pad_link (GstPad * pad, GstElement * element,
464 GstDebugGraphDetails details, GString * str, const gint indent)
466 GstElement *peer_element;
468 GstCaps *caps, *peer_caps;
470 gchar *media_src = NULL, *media_sink = NULL;
471 gchar *pad_name, *element_name;
472 gchar *peer_pad_name, *peer_element_name;
473 const gchar *spc = MAKE_INDENT (indent);
475 if ((peer_pad = gst_pad_get_peer (pad))) {
476 if ((details & GST_DEBUG_GRAPH_SHOW_MEDIA_TYPE) ||
477 (details & GST_DEBUG_GRAPH_SHOW_CAPS_DETAILS)
479 caps = gst_pad_get_current_caps (pad);
481 caps = gst_pad_get_pad_template_caps (pad);
482 peer_caps = gst_pad_get_current_caps (peer_pad);
484 peer_caps = gst_pad_get_pad_template_caps (peer_pad);
486 media = debug_dump_describe_caps (caps, details);
487 /* check if peer caps are different */
488 if (peer_caps && !gst_caps_is_equal (caps, peer_caps)) {
491 tmp = debug_dump_describe_caps (peer_caps, details);
492 if (gst_pad_get_direction (pad) == GST_PAD_SRC) {
501 gst_caps_unref (peer_caps);
502 gst_caps_unref (caps);
505 pad_name = debug_dump_make_object_name (GST_OBJECT (pad));
507 element_name = debug_dump_make_object_name (GST_OBJECT (element));
509 element_name = g_strdup ("");
511 peer_pad_name = debug_dump_make_object_name (GST_OBJECT (peer_pad));
512 if ((peer_element = gst_pad_get_parent_element (peer_pad))) {
514 debug_dump_make_object_name (GST_OBJECT (peer_element));
516 peer_element_name = g_strdup ("");
521 g_string_append_printf (str, "%s%s_%s -> %s_%s [label=\"%s\"]\n", spc,
522 element_name, pad_name, peer_element_name, peer_pad_name, media);
524 } else if (media_src && media_sink) {
525 /* dot has some issues with placement of head and taillabels,
526 * we need an empty label to make space */
527 g_string_append_printf (str,
528 "%s%s_%s -> %s_%s [labeldistance=\"10\", labelangle=\"0\", "
530 "taillabel=\"%s\", headlabel=\"%s\"]\n",
531 spc, element_name, pad_name, peer_element_name, peer_pad_name,
532 media_src, media_sink);
536 g_string_append_printf (str, "%s%s_%s -> %s_%s\n", spc,
537 element_name, pad_name, peer_element_name, peer_pad_name);
541 g_free (element_name);
542 g_free (peer_pad_name);
543 g_free (peer_element_name);
545 gst_object_unref (peer_element);
546 gst_object_unref (peer_pad);
551 debug_dump_element_pads (GstIterator * pad_iter, GstPad * pad,
552 GstElement * element, GstDebugGraphDetails details, GString * str,
553 const gint indent, guint * num_pads, gchar * cluster_name,
554 gchar ** first_pad_name)
556 GValue item = { 0, };
558 const gchar *spc = MAKE_INDENT (indent);
562 switch (gst_iterator_next (pad_iter, &item)) {
563 case GST_ITERATOR_OK:
564 pad = g_value_get_object (&item);
566 g_string_append_printf (str, "%ssubgraph cluster_%s {\n", spc,
568 g_string_append_printf (str, "%s label=\"\";\n", spc);
569 g_string_append_printf (str, "%s style=\"invis\";\n", spc);
570 (*first_pad_name) = debug_dump_make_object_name (GST_OBJECT (pad));
572 debug_dump_element_pad (pad, element, details, str, indent);
574 g_value_reset (&item);
576 case GST_ITERATOR_RESYNC:
577 gst_iterator_resync (pad_iter);
579 case GST_ITERATOR_ERROR:
580 case GST_ITERATOR_DONE:
586 g_string_append_printf (str, "%s}\n\n", spc);
591 * debug_dump_element:
592 * @bin: the bin that should be analyzed
593 * @out: file to write to
594 * @indent: level of graph indentation
596 * Helper for gst_debug_bin_to_dot_file() to recursively dump a pipeline.
599 debug_dump_element (GstBin * bin, GstDebugGraphDetails details,
600 GString * str, const gint indent)
602 GstIterator *element_iter, *pad_iter;
603 gboolean elements_done, pads_done;
604 GValue item = { 0, };
605 GValue item2 = { 0, };
608 guint src_pads, sink_pads;
609 gchar *src_pad_name = NULL, *sink_pad_name = NULL;
611 gchar *state_name = NULL;
612 gchar *param_name = NULL;
613 const gchar *spc = MAKE_INDENT (indent);
615 element_iter = gst_bin_iterate_elements (bin);
616 elements_done = FALSE;
617 while (!elements_done) {
618 switch (gst_iterator_next (element_iter, &item)) {
619 case GST_ITERATOR_OK:
620 element = g_value_get_object (&item);
621 element_name = debug_dump_make_object_name (GST_OBJECT (element));
623 if (details & GST_DEBUG_GRAPH_SHOW_STATES) {
624 state_name = debug_dump_get_element_state (GST_ELEMENT (element));
626 if (details & GST_DEBUG_GRAPH_SHOW_NON_DEFAULT_PARAMS) {
627 param_name = debug_dump_get_object_params (G_OBJECT (element),
631 g_string_append_printf (str, "%ssubgraph cluster_%s {\n", spc,
633 g_string_append_printf (str, "%s fontname=\"Bitstream Vera Sans\";\n",
635 g_string_append_printf (str, "%s fontsize=\"8\";\n", spc);
636 g_string_append_printf (str, "%s style=\"filled,rounded\";\n", spc);
637 g_string_append_printf (str, "%s color=black;\n", spc);
638 g_string_append_printf (str, "%s label=\"%s\\n%s%s%s\";\n", spc,
639 G_OBJECT_TYPE_NAME (element), GST_OBJECT_NAME (element),
640 (state_name ? state_name : ""), (param_name ? param_name : "")
651 src_pads = sink_pads = 0;
652 if ((pad_iter = gst_element_iterate_sink_pads (element))) {
653 gchar *cluster_name = g_strdup_printf ("%s_sink", element_name);
654 debug_dump_element_pads (pad_iter, pad, element, details, str,
655 indent + 1, &sink_pads, cluster_name, &sink_pad_name);
656 g_free (cluster_name);
657 gst_iterator_free (pad_iter);
659 if ((pad_iter = gst_element_iterate_src_pads (element))) {
660 gchar *cluster_name = g_strdup_printf ("%s_src", element_name);
661 debug_dump_element_pads (pad_iter, pad, element, details, str,
662 indent + 1, &src_pads, cluster_name, &src_pad_name);
663 g_free (cluster_name);
664 gst_iterator_free (pad_iter);
666 if (sink_pads && src_pads) {
667 /* add invisible link from first sink to first src pad */
668 g_string_append_printf (str,
669 "%s %s_%s -> %s_%s [style=\"invis\"];\n",
670 spc, element_name, sink_pad_name, element_name, src_pad_name);
672 g_free (sink_pad_name);
673 g_free (src_pad_name);
674 g_free (element_name);
675 sink_pad_name = src_pad_name = NULL;
676 if (GST_IS_BIN (element)) {
677 g_string_append_printf (str, "%s fillcolor=\"#ffffff\";\n", spc);
679 debug_dump_element (GST_BIN (element), details, str, indent + 1);
681 if (src_pads && !sink_pads)
682 g_string_append_printf (str, "%s fillcolor=\"#ffaaaa\";\n", spc);
683 else if (!src_pads && sink_pads)
684 g_string_append_printf (str, "%s fillcolor=\"#aaaaff\";\n", spc);
685 else if (src_pads && sink_pads)
686 g_string_append_printf (str, "%s fillcolor=\"#aaffaa\";\n", spc);
688 g_string_append_printf (str, "%s fillcolor=\"#ffffff\";\n", spc);
690 g_string_append_printf (str, "%s}\n\n", spc);
691 if ((pad_iter = gst_element_iterate_pads (element))) {
694 switch (gst_iterator_next (pad_iter, &item2)) {
695 case GST_ITERATOR_OK:
696 pad = g_value_get_object (&item2);
697 if (gst_pad_is_linked (pad)) {
698 if (gst_pad_get_direction (pad) == GST_PAD_SRC) {
699 debug_dump_element_pad_link (pad, element, details, str,
702 GstPad *peer_pad = gst_pad_get_peer (pad);
705 if (!GST_IS_GHOST_PAD (peer_pad)
706 && GST_IS_PROXY_PAD (peer_pad)) {
707 debug_dump_element_pad_link (peer_pad, NULL, details,
710 gst_object_unref (peer_pad);
714 g_value_reset (&item2);
716 case GST_ITERATOR_RESYNC:
717 gst_iterator_resync (pad_iter);
719 case GST_ITERATOR_ERROR:
720 case GST_ITERATOR_DONE:
725 g_value_unset (&item2);
726 gst_iterator_free (pad_iter);
728 g_value_reset (&item);
730 case GST_ITERATOR_RESYNC:
731 gst_iterator_resync (element_iter);
733 case GST_ITERATOR_ERROR:
734 case GST_ITERATOR_DONE:
735 elements_done = TRUE;
740 g_value_unset (&item);
741 gst_iterator_free (element_iter);
745 debug_dump_header (GstBin * bin, GstDebugGraphDetails details, GString * str)
747 gchar *state_name = NULL;
748 gchar *param_name = NULL;
750 if (details & GST_DEBUG_GRAPH_SHOW_STATES) {
751 state_name = debug_dump_get_element_state (GST_ELEMENT (bin));
753 if (details & GST_DEBUG_GRAPH_SHOW_NON_DEFAULT_PARAMS) {
754 param_name = debug_dump_get_object_params (G_OBJECT (bin), details, NULL);
758 g_string_append_printf (str,
759 "digraph pipeline {\n"
761 " fontname=\"sans\";\n"
762 " fontsize=\"10\";\n"
766 " label=\"<%s>\\n%s%s%s\";\n"
767 " node [style=\"filled,rounded\", shape=box, fontsize=\"9\", fontname=\"sans\", margin=\"0.0,0.0\"];\n"
768 " edge [labelfontsize=\"6\", fontsize=\"9\", fontname=\"monospace\"];\n"
772 " margin=\"0.05,0.05\",\n"
773 " style=\"filled\",\n"
774 " 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"
776 "\n", G_OBJECT_TYPE_NAME (bin), GST_OBJECT_NAME (bin),
777 (state_name ? state_name : ""), (param_name ? param_name : "")
787 debug_dump_footer (GString * str)
789 g_string_append_printf (str, "}\n");
793 * gst_debug_bin_to_dot_data:
794 * @bin: the top-level pipeline that should be analyzed
796 * To aid debugging applications one can use this method to obtain the whole
797 * network of gstreamer elements that form the pipeline into an dot file.
798 * This data can be processed with graphviz to get an image.
800 * Returns: (transfer full): a string containing the pipeline in graphviz
804 gst_debug_bin_to_dot_data (GstBin * bin, GstDebugGraphDetails details)
808 g_return_val_if_fail (GST_IS_BIN (bin), NULL);
810 str = g_string_new (NULL);
812 debug_dump_header (bin, details, str);
813 debug_dump_element (bin, details, str, 1);
814 debug_dump_footer (str);
816 return g_string_free (str, FALSE);
820 * gst_debug_bin_to_dot_file:
821 * @bin: the top-level pipeline that should be analyzed
822 * @file_name: output base filename (e.g. "myplayer")
824 * To aid debugging applications one can use this method to write out the whole
825 * network of gstreamer elements that form the pipeline into an dot file.
826 * This file can be processed with graphviz to get an image.
827 * <informalexample><programlisting>
828 * dot -Tpng -oimage.png graph_lowlevel.dot
829 * </programlisting></informalexample>
832 gst_debug_bin_to_dot_file (GstBin * bin, GstDebugGraphDetails details,
833 const gchar * file_name)
835 gchar *full_file_name = NULL;
838 g_return_if_fail (GST_IS_BIN (bin));
840 if (G_LIKELY (priv_gst_dump_dot_dir == NULL))
844 file_name = g_get_application_name ();
846 file_name = "unnamed";
849 full_file_name = g_strdup_printf ("%s" G_DIR_SEPARATOR_S "%s.dot",
850 priv_gst_dump_dot_dir, file_name);
852 if ((out = fopen (full_file_name, "wb"))) {
855 buf = gst_debug_bin_to_dot_data (bin, details);
861 GST_INFO ("wrote bin graph to : '%s'", full_file_name);
863 GST_WARNING ("Failed to open file '%s' for writing: %s", full_file_name,
866 g_free (full_file_name);
870 * gst_debug_bin_to_dot_file_with_ts:
871 * @bin: the top-level pipeline that should be analyzed
872 * @file_name: output base filename (e.g. "myplayer")
874 * This works like gst_debug_bin_to_dot_file(), but adds the current timestamp
875 * to the filename, so that it can be used to take multiple snapshots.
878 gst_debug_bin_to_dot_file_with_ts (GstBin * bin,
879 GstDebugGraphDetails details, const gchar * file_name)
881 gchar *ts_file_name = NULL;
882 GstClockTime elapsed;
884 g_return_if_fail (GST_IS_BIN (bin));
887 file_name = g_get_application_name ();
889 file_name = "unnamed";
893 elapsed = GST_CLOCK_DIFF (_priv_gst_start_time, gst_util_get_timestamp ());
895 /* we don't use GST_TIME_FORMAT as such filenames would fail on some
896 * filesystems like fat */
898 g_strdup_printf ("%u.%02u.%02u.%09u-%s", GST_TIME_ARGS (elapsed),
901 gst_debug_bin_to_dot_file (bin, details, ts_file_name);
902 g_free (ts_file_name);
904 #else /* !GST_DISABLE_GST_DEBUG */
905 #ifndef GST_REMOVE_DISABLED
907 gst_debug_bin_to_dot_file (GstBin * bin, GstDebugGraphDetails details,
908 const gchar * file_name)
913 gst_debug_bin_to_dot_file_with_ts (GstBin * bin, GstDebugGraphDetails details,
914 const gchar * file_name)
917 #endif /* GST_REMOVE_DISABLED */
918 #endif /* GST_DISABLE_GST_DEBUG */