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gstreamer/gst/gstdebugutils.c
Stefan Sauer f3e122ffec debugutils: bring the dot style a bit closer to what we use in the docs 
Use round corners for bins and elements. Put sink pads on the left and src pads
on the right of elements.
2015-08-17 22:08:07 +02:00

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/* GStreamer
* Copyright (C) 2007 Stefan Kost <ensonic@users.sf.net>
*
* gstdebugutils.c: debugging and analysis utillities
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public
* License along with this library; if not, write to the
* Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
* Boston, MA 02110-1301, USA.
*/
/* TODO:
* edge [ constraint=false ];
* this creates strange graphs ("minlen=0" is better)
* try puting src/sink ghostpads for each bin into invisible clusters
*
* for more compact nodes, try
* - changing node-shape from box into record
* - use labels like : element [ label="{element | <src> src | <sink> sink}"]
* - point to record-connectors : element1:src -> element2:sink
* - we use head/tail labels for pad-caps right now
* - this does not work well, as dot seems to not look at their size when
* doing the layout
* - we could add the caps to the pad itself, then we should use one line per
* caps (simple caps = one line)
*/
#include "gst_private.h"
#include "gstdebugutils.h"
#ifndef GST_DISABLE_GST_DEBUG
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <errno.h>
#include "gstinfo.h"
#include "gstbin.h"
#include "gstobject.h"
#include "gstghostpad.h"
#include "gstpad.h"
#include "gstutils.h"
#include "gstvalue.h"
/*** PIPELINE GRAPHS **********************************************************/
extern const gchar *priv_gst_dump_dot_dir; /* NULL *//* set from gst.c */
#define PARAM_MAX_LENGTH 80
const gchar spaces[] = {
" " /* 32 */
" " /* 64 */
" " /* 96 */
" " /* 128 */
};
#define MAKE_INDENT(indent) \
&spaces[MAX (sizeof (spaces) - (1 + (indent) * 2), 0)]
static gchar *
debug_dump_make_object_name (GstObject * obj)
{
return g_strcanon (g_strdup_printf ("%s_%p", GST_OBJECT_NAME (obj), obj),
G_CSET_A_2_Z G_CSET_a_2_z G_CSET_DIGITS "_", '_');
}
static gchar *
debug_dump_get_element_state (GstElement * element)
{
gchar *state_name = NULL;
const gchar *state_icons = "~0-=>";
GstState state = GST_STATE_VOID_PENDING, pending = GST_STATE_VOID_PENDING;
gst_element_get_state (element, &state, &pending, 0);
if (pending == GST_STATE_VOID_PENDING) {
gboolean is_locked = gst_element_is_locked_state (element);
state_name = g_strdup_printf ("\\n[%c]%s", state_icons[state],
(is_locked ? "(locked)" : ""));
} else {
state_name = g_strdup_printf ("\\n[%c] -> [%c]", state_icons[state],
state_icons[pending]);
}
return state_name;
}
static gchar *
debug_dump_get_element_params (GstElement * element,
GstDebugGraphDetails details)
{
gchar *param_name = NULL;
GParamSpec **properties, *property;
GValue value = { 0, };
guint i, number_of_properties;
gchar *tmp, *value_str;
const gchar *ellipses;
/* get paramspecs and show non-default properties */
properties =
g_object_class_list_properties (G_OBJECT_CLASS (GST_ELEMENT_GET_CLASS
(element)), &number_of_properties);
if (properties) {
for (i = 0; i < number_of_properties; i++) {
property = properties[i];
/* skip some properties */
if (!(property->flags & G_PARAM_READABLE))
continue;
if (!strcmp (property->name, "name"))
continue;
g_value_init (&value, property->value_type);
g_object_get_property (G_OBJECT (element), property->name, &value);
if (!(g_param_value_defaults (property, &value))) {
tmp = g_strdup_value_contents (&value);
value_str = g_strescape (tmp, NULL);
g_free (tmp);
/* too long, ellipsize */
if (!(details & GST_DEBUG_GRAPH_SHOW_FULL_PARAMS) &&
strlen (value_str) > PARAM_MAX_LENGTH)
ellipses = "…";
else
ellipses = "";
if (param_name)
tmp = param_name;
else
tmp = (char *) "";
if (details & GST_DEBUG_GRAPH_SHOW_FULL_PARAMS) {
param_name = g_strdup_printf ("%s\\n%s=%s", tmp, property->name,
value_str);
} else {
param_name = g_strdup_printf ("%s\\n%s=%."
G_STRINGIFY (PARAM_MAX_LENGTH) "s%s", tmp, property->name,
value_str, ellipses);
}
if (tmp[0] != '\0')
g_free (tmp);
g_free (value_str);
}
g_value_unset (&value);
}
g_free (properties);
}
return param_name;
}
static void
debug_dump_pad (GstPad * pad, const gchar * color_name,
const gchar * element_name, GstDebugGraphDetails details, GString * str,
const gint indent)
{
GstPadTemplate *pad_templ;
GstPadPresence presence;
gchar *pad_name;
const gchar *style_name;
const gchar *spc = MAKE_INDENT (indent);
pad_name = debug_dump_make_object_name (GST_OBJECT (pad));
/* pad availability */
style_name = "filled,solid";
if ((pad_templ = gst_pad_get_pad_template (pad))) {
presence = GST_PAD_TEMPLATE_PRESENCE (pad_templ);
gst_object_unref (pad_templ);
if (presence == GST_PAD_SOMETIMES) {
style_name = "filled,dotted";
} else if (presence == GST_PAD_REQUEST) {
style_name = "filled,dashed";
}
}
if (details & GST_DEBUG_GRAPH_SHOW_STATES) {
gchar pad_flags[4];
const gchar *activation_mode = "-><";
const gchar *task_mode = "";
GstTask *task;
GST_OBJECT_LOCK (pad);
task = GST_PAD_TASK (pad);
if (task) {
switch (gst_task_get_state (task)) {
case GST_TASK_STARTED:
task_mode = "[T]";
break;
case GST_TASK_PAUSED:
task_mode = "[t]";
break;
default:
/* Invalid task state, ignoring */
break;
}
}
GST_OBJECT_UNLOCK (pad);
/* check if pad flags */
pad_flags[0] =
GST_OBJECT_FLAG_IS_SET (pad, GST_PAD_FLAG_BLOCKED) ? 'B' : 'b';
pad_flags[1] =
GST_OBJECT_FLAG_IS_SET (pad, GST_PAD_FLAG_FLUSHING) ? 'F' : 'f';
pad_flags[2] =
GST_OBJECT_FLAG_IS_SET (pad, GST_PAD_FLAG_BLOCKING) ? 'B' : 'b';
pad_flags[3] = '\0';
g_string_append_printf (str,
"%s %s_%s [color=black, fillcolor=\"%s\", label=\"%s\\n[%c][%s]%s\", height=\"0.2\", style=\"%s\"];\n",
spc, element_name, pad_name, color_name, GST_OBJECT_NAME (pad),
activation_mode[pad->mode], pad_flags, task_mode, style_name);
} else {
g_string_append_printf (str,
"%s %s_%s [color=black, fillcolor=\"%s\", label=\"%s\", height=\"0.2\", style=\"%s\"];\n",
spc, element_name, pad_name, color_name, GST_OBJECT_NAME (pad),
style_name);
}
g_free (pad_name);
}
static void
debug_dump_element_pad (GstPad * pad, GstElement * element,
GstDebugGraphDetails details, GString * str, const gint indent)
{
GstElement *target_element;
GstPad *target_pad, *tmp_pad;
GstPadDirection dir;
gchar *element_name;
gchar *target_element_name;
const gchar *color_name;
dir = gst_pad_get_direction (pad);
element_name = debug_dump_make_object_name (GST_OBJECT (element));
if (GST_IS_GHOST_PAD (pad)) {
color_name =
(dir == GST_PAD_SRC) ? "#ffdddd" : ((dir ==
GST_PAD_SINK) ? "#ddddff" : "#ffffff");
/* output target-pad so that it belongs to this element */
if ((tmp_pad = gst_ghost_pad_get_target (GST_GHOST_PAD (pad)))) {
if ((target_pad = gst_pad_get_peer (tmp_pad))) {
gchar *pad_name, *target_pad_name;
const gchar *spc = MAKE_INDENT (indent);
if ((target_element = gst_pad_get_parent_element (target_pad))) {
target_element_name =
debug_dump_make_object_name (GST_OBJECT (target_element));
} else {
target_element_name = g_strdup ("");
}
debug_dump_pad (target_pad, color_name, target_element_name, details,
str, indent);
/* src ghostpad relationship */
pad_name = debug_dump_make_object_name (GST_OBJECT (pad));
target_pad_name = debug_dump_make_object_name (GST_OBJECT (target_pad));
if (dir == GST_PAD_SRC) {
g_string_append_printf (str,
"%s%s_%s -> %s_%s [style=dashed, minlen=0]\n", spc,
target_element_name, target_pad_name, element_name, pad_name);
} else {
g_string_append_printf (str,
"%s%s_%s -> %s_%s [style=dashed, minlen=0]\n", spc,
element_name, pad_name, target_element_name, target_pad_name);
}
g_free (target_pad_name);
g_free (target_element_name);
if (target_element)
gst_object_unref (target_element);
gst_object_unref (target_pad);
g_free (pad_name);
}
gst_object_unref (tmp_pad);
}
} else {
color_name =
(dir == GST_PAD_SRC) ? "#ffaaaa" : ((dir ==
GST_PAD_SINK) ? "#aaaaff" : "#cccccc");
}
/* pads */
debug_dump_pad (pad, color_name, element_name, details, str, indent);
g_free (element_name);
}
static gboolean
string_append_field (GQuark field, const GValue * value, gpointer ptr)
{
GString *str = (GString *) ptr;
gchar *value_str = gst_value_serialize (value);
gchar *esc_value_str;
if (value_str == NULL) {
g_string_append_printf (str, " %18s: NULL\\l", g_quark_to_string (field));
return TRUE;
}
/* some enums can become really long */
if (strlen (value_str) > 25) {
gint pos = 24;
/* truncate */
value_str[25] = '\0';
/* mirror any brackets and quotes */
if (value_str[0] == '<')
value_str[pos--] = '>';
if (value_str[0] == '[')
value_str[pos--] = ']';
if (value_str[0] == '(')
value_str[pos--] = ')';
if (value_str[0] == '{')
value_str[pos--] = '}';
if (value_str[0] == '"')
value_str[pos--] = '"';
if (pos != 24)
value_str[pos--] = ' ';
/* elippsize */
value_str[pos--] = '.';
value_str[pos--] = '.';
value_str[pos--] = '.';
}
esc_value_str = g_strescape (value_str, NULL);
g_string_append_printf (str, " %18s: %s\\l", g_quark_to_string (field),
esc_value_str);
g_free (value_str);
g_free (esc_value_str);
return TRUE;
}
static gchar *
debug_dump_describe_caps (GstCaps * caps, GstDebugGraphDetails details)
{
gchar *media = NULL;
if (details & GST_DEBUG_GRAPH_SHOW_CAPS_DETAILS) {
if (gst_caps_is_any (caps) || gst_caps_is_empty (caps)) {
media = gst_caps_to_string (caps);
} else {
GString *str = NULL;
guint i;
guint slen = 0;
for (i = 0; i < gst_caps_get_size (caps); i++) {
slen += 25 +
STRUCTURE_ESTIMATED_STRING_LEN (gst_caps_get_structure (caps, i));
}
str = g_string_sized_new (slen);
for (i = 0; i < gst_caps_get_size (caps); i++) {
GstCapsFeatures *features = __gst_caps_get_features_unchecked (caps, i);
GstStructure *structure = gst_caps_get_structure (caps, i);
g_string_append (str, gst_structure_get_name (structure));
if (features && (gst_caps_features_is_any (features)
|| !gst_caps_features_is_equal (features,
GST_CAPS_FEATURES_MEMORY_SYSTEM_MEMORY))) {
g_string_append_c (str, '(');
priv_gst_caps_features_append_to_gstring (features, str);
g_string_append_c (str, ')');
}
g_string_append (str, "\\l");
gst_structure_foreach (structure, string_append_field, (gpointer) str);
}
media = g_string_free (str, FALSE);
}
} else {
if (GST_CAPS_IS_SIMPLE (caps))
media =
g_strdup (gst_structure_get_name (gst_caps_get_structure (caps, 0)));
else
media = g_strdup ("*");
}
return media;
}
static void
debug_dump_element_pad_link (GstPad * pad, GstElement * element,
GstDebugGraphDetails details, GString * str, const gint indent)
{
GstElement *peer_element;
GstPad *peer_pad;
GstCaps *caps, *peer_caps;
gchar *media = NULL;
gchar *media_src = NULL, *media_sink = NULL;
gchar *pad_name, *element_name;
gchar *peer_pad_name, *peer_element_name;
const gchar *spc = MAKE_INDENT (indent);
if ((peer_pad = gst_pad_get_peer (pad))) {
if ((details & GST_DEBUG_GRAPH_SHOW_MEDIA_TYPE) ||
(details & GST_DEBUG_GRAPH_SHOW_CAPS_DETAILS)
) {
caps = gst_pad_get_current_caps (pad);
if (!caps)
caps = gst_pad_get_pad_template_caps (pad);
peer_caps = gst_pad_get_current_caps (peer_pad);
if (!peer_caps)
peer_caps = gst_pad_get_pad_template_caps (peer_pad);
media = debug_dump_describe_caps (caps, details);
/* check if peer caps are different */
if (peer_caps && !gst_caps_is_equal (caps, peer_caps)) {
gchar *tmp;
tmp = debug_dump_describe_caps (peer_caps, details);
if (gst_pad_get_direction (pad) == GST_PAD_SRC) {
media_src = media;
media_sink = tmp;
} else {
media_src = tmp;
media_sink = media;
}
media = NULL;
}
gst_caps_unref (peer_caps);
gst_caps_unref (caps);
}
pad_name = debug_dump_make_object_name (GST_OBJECT (pad));
if (element) {
element_name = debug_dump_make_object_name (GST_OBJECT (element));
} else {
element_name = g_strdup ("");
}
peer_pad_name = debug_dump_make_object_name (GST_OBJECT (peer_pad));
if ((peer_element = gst_pad_get_parent_element (peer_pad))) {
peer_element_name =
debug_dump_make_object_name (GST_OBJECT (peer_element));
} else {
peer_element_name = g_strdup ("");
}
/* pad link */
if (media) {
g_string_append_printf (str, "%s%s_%s -> %s_%s [label=\"%s\"]\n", spc,
element_name, pad_name, peer_element_name, peer_pad_name, media);
g_free (media);
} else if (media_src && media_sink) {
/* dot has some issues with placement of head and taillabels,
* we need an empty label to make space */
g_string_append_printf (str,
"%s%s_%s -> %s_%s [labeldistance=\"10\", labelangle=\"0\", "
"label=\" \", "
"taillabel=\"%s\", headlabel=\"%s\"]\n",
spc, element_name, pad_name, peer_element_name, peer_pad_name,
media_src, media_sink);
g_free (media_src);
g_free (media_sink);
} else {
g_string_append_printf (str, "%s%s_%s -> %s_%s\n", spc,
element_name, pad_name, peer_element_name, peer_pad_name);
}
g_free (pad_name);
g_free (element_name);
g_free (peer_pad_name);
g_free (peer_element_name);
if (peer_element)
gst_object_unref (peer_element);
gst_object_unref (peer_pad);
}
}
static void
debug_dump_element_pads (GstIterator * pad_iter, GstPad * pad,
GstElement * element, GstDebugGraphDetails details, GString * str,
const gint indent, guint * num_pads, gchar * cluster_name,
gchar ** first_pad_name)
{
GValue item = { 0, };
gboolean pads_done;
const gchar *spc = MAKE_INDENT (indent);
pads_done = FALSE;
while (!pads_done) {
switch (gst_iterator_next (pad_iter, &item)) {
case GST_ITERATOR_OK:
pad = g_value_get_object (&item);
if (!*num_pads) {
g_string_append_printf (str, "%ssubgraph cluster_%s {\n", spc,
cluster_name);
g_string_append_printf (str, "%s label=\"\";\n", spc);
g_string_append_printf (str, "%s style=\"invis\";\n", spc);
(*first_pad_name) = debug_dump_make_object_name (GST_OBJECT (pad));
}
debug_dump_element_pad (pad, element, details, str, indent);
(*num_pads)++;
g_value_reset (&item);
break;
case GST_ITERATOR_RESYNC:
gst_iterator_resync (pad_iter);
break;
case GST_ITERATOR_ERROR:
case GST_ITERATOR_DONE:
pads_done = TRUE;
break;
}
}
if (*num_pads) {
g_string_append_printf (str, "%s}\n\n", spc);
}
}
/*
* debug_dump_element:
* @bin: the bin that should be analyzed
* @out: file to write to
* @indent: level of graph indentation
*
* Helper for gst_debug_bin_to_dot_file() to recursively dump a pipeline.
*/
static void
debug_dump_element (GstBin * bin, GstDebugGraphDetails details,
GString * str, const gint indent)
{
GstIterator *element_iter, *pad_iter;
gboolean elements_done, pads_done;
GValue item = { 0, };
GValue item2 = { 0, };
GstElement *element;
GstPad *pad = NULL;
guint src_pads, sink_pads;
gchar *src_pad_name = NULL, *sink_pad_name = NULL;
gchar *element_name;
gchar *state_name = NULL;
gchar *param_name = NULL;
const gchar *spc = MAKE_INDENT (indent);
element_iter = gst_bin_iterate_elements (bin);
elements_done = FALSE;
while (!elements_done) {
switch (gst_iterator_next (element_iter, &item)) {
case GST_ITERATOR_OK:
element = g_value_get_object (&item);
element_name = debug_dump_make_object_name (GST_OBJECT (element));
if (details & GST_DEBUG_GRAPH_SHOW_STATES) {
state_name = debug_dump_get_element_state (GST_ELEMENT (element));
}
if (details & GST_DEBUG_GRAPH_SHOW_NON_DEFAULT_PARAMS) {
param_name = debug_dump_get_element_params (GST_ELEMENT (element),
details);
}
/* elements */
g_string_append_printf (str, "%ssubgraph cluster_%s {\n", spc,
element_name);
g_string_append_printf (str, "%s fontname=\"Bitstream Vera Sans\";\n",
spc);
g_string_append_printf (str, "%s fontsize=\"8\";\n", spc);
g_string_append_printf (str, "%s style=\"filled,rounded\";\n", spc);
g_string_append_printf (str, "%s color=black;\n", spc);
g_string_append_printf (str, "%s label=\"%s\\n%s%s%s\";\n", spc,
G_OBJECT_TYPE_NAME (element), GST_OBJECT_NAME (element),
(state_name ? state_name : ""), (param_name ? param_name : "")
);
if (state_name) {
g_free (state_name);
state_name = NULL;
}
if (param_name) {
g_free (param_name);
param_name = NULL;
}
src_pads = sink_pads = 0;
if ((pad_iter = gst_element_iterate_sink_pads (element))) {
gchar *cluster_name = g_strdup_printf ("%s_sink", element_name);
debug_dump_element_pads (pad_iter, pad, element, details, str,
indent + 1, &sink_pads, cluster_name, &sink_pad_name);
g_free (cluster_name);
gst_iterator_free (pad_iter);
}
if ((pad_iter = gst_element_iterate_src_pads (element))) {
gchar *cluster_name = g_strdup_printf ("%s_src", element_name);
debug_dump_element_pads (pad_iter, pad, element, details, str,
indent + 1, &src_pads, cluster_name, &src_pad_name);
g_free (cluster_name);
gst_iterator_free (pad_iter);
}
if (sink_pads && src_pads) {
/* add invisible link from first sink to first src pad */
g_string_append_printf (str,
"%s %s_%s -> %s_%s [style=\"invis\"];\n",
spc, element_name, sink_pad_name, element_name, src_pad_name);
}
g_free (sink_pad_name);
g_free (src_pad_name);
g_free (element_name);
sink_pad_name = src_pad_name = NULL;
if (GST_IS_BIN (element)) {
g_string_append_printf (str, "%s fillcolor=\"#ffffff\";\n", spc);
/* recurse */
debug_dump_element (GST_BIN (element), details, str, indent + 1);
} else {
if (src_pads && !sink_pads)
g_string_append_printf (str, "%s fillcolor=\"#ffaaaa\";\n", spc);
else if (!src_pads && sink_pads)
g_string_append_printf (str, "%s fillcolor=\"#aaaaff\";\n", spc);
else if (src_pads && sink_pads)
g_string_append_printf (str, "%s fillcolor=\"#aaffaa\";\n", spc);
else
g_string_append_printf (str, "%s fillcolor=\"#ffffff\";\n", spc);
}
g_string_append_printf (str, "%s}\n\n", spc);
if ((pad_iter = gst_element_iterate_pads (element))) {
pads_done = FALSE;
while (!pads_done) {
switch (gst_iterator_next (pad_iter, &item2)) {
case GST_ITERATOR_OK:
pad = g_value_get_object (&item2);
if (gst_pad_is_linked (pad)) {
if (gst_pad_get_direction (pad) == GST_PAD_SRC) {
debug_dump_element_pad_link (pad, element, details, str,
indent);
} else {
GstPad *peer_pad = gst_pad_get_peer (pad);
if (peer_pad) {
if (!GST_IS_GHOST_PAD (peer_pad)
&& GST_IS_PROXY_PAD (peer_pad)) {
debug_dump_element_pad_link (peer_pad, NULL, details,
str, indent);
}
gst_object_unref (peer_pad);
}
}
}
g_value_reset (&item2);
break;
case GST_ITERATOR_RESYNC:
gst_iterator_resync (pad_iter);
break;
case GST_ITERATOR_ERROR:
case GST_ITERATOR_DONE:
pads_done = TRUE;
break;
}
}
g_value_unset (&item2);
gst_iterator_free (pad_iter);
}
g_value_reset (&item);
break;
case GST_ITERATOR_RESYNC:
gst_iterator_resync (element_iter);
break;
case GST_ITERATOR_ERROR:
case GST_ITERATOR_DONE:
elements_done = TRUE;
break;
}
}
g_value_unset (&item);
gst_iterator_free (element_iter);
}
static void
debug_dump_header (GstBin * bin, GstDebugGraphDetails details, GString * str)
{
gchar *state_name = NULL;
gchar *param_name = NULL;
if (details & GST_DEBUG_GRAPH_SHOW_STATES) {
state_name = debug_dump_get_element_state (GST_ELEMENT (bin));
}
if (details & GST_DEBUG_GRAPH_SHOW_NON_DEFAULT_PARAMS) {
param_name = debug_dump_get_element_params (GST_ELEMENT (bin), details);
}
/* write header */
g_string_append_printf (str,
"digraph pipeline {\n"
" rankdir=LR;\n"
" fontname=\"sans\";\n"
" fontsize=\"10\";\n"
" labelloc=t;\n"
" nodesep=.1;\n"
" ranksep=.2;\n"
" label=\"<%s>\\n%s%s%s\";\n"
" node [style=\"filled,rounded\", shape=box, fontsize=\"9\", fontname=\"sans\", margin=\"0.0,0.0\"];\n"
" edge [labelfontsize=\"6\", fontsize=\"9\", fontname=\"monospace\"];\n"
" \n"
" legend [\n"
" pos=\"0,0!\",\n"
" margin=\"0.05,0.05\",\n"
" style=\"filled\",\n"
" 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"
" ];"
"\n", G_OBJECT_TYPE_NAME (bin), GST_OBJECT_NAME (bin),
(state_name ? state_name : ""), (param_name ? param_name : "")
);
if (state_name)
g_free (state_name);
if (param_name)
g_free (param_name);
}
static void
debug_dump_footer (GString * str)
{
g_string_append_printf (str, "}\n");
}
/*
* gst_debug_bin_to_dot_data:
* @bin: the top-level pipeline that should be analyzed
*
* To aid debugging applications one can use this method to obtain the whole
* network of gstreamer elements that form the pipeline into an dot file.
* This data can be processed with graphviz to get an image.
*
* Returns: (transfer full): a string containing the pipeline in graphviz
* dot format.
*/
gchar *
gst_debug_bin_to_dot_data (GstBin * bin, GstDebugGraphDetails details)
{
GString *str;
g_return_val_if_fail (GST_IS_BIN (bin), NULL);
str = g_string_new (NULL);
debug_dump_header (bin, details, str);
debug_dump_element (bin, details, str, 1);
debug_dump_footer (str);
return g_string_free (str, FALSE);
}
/*
* gst_debug_bin_to_dot_file:
* @bin: the top-level pipeline that should be analyzed
* @file_name: output base filename (e.g. "myplayer")
*
* To aid debugging applications one can use this method to write out the whole
* network of gstreamer elements that form the pipeline into an dot file.
* This file can be processed with graphviz to get an image.
* <informalexample><programlisting>
* dot -Tpng -oimage.png graph_lowlevel.dot
* </programlisting></informalexample>
*/
void
gst_debug_bin_to_dot_file (GstBin * bin, GstDebugGraphDetails details,
const gchar * file_name)
{
gchar *full_file_name = NULL;
FILE *out;
g_return_if_fail (GST_IS_BIN (bin));
if (G_LIKELY (priv_gst_dump_dot_dir == NULL))
return;
if (!file_name) {
file_name = g_get_application_name ();
if (!file_name)
file_name = "unnamed";
}
full_file_name = g_strdup_printf ("%s" G_DIR_SEPARATOR_S "%s.dot",
priv_gst_dump_dot_dir, file_name);
if ((out = fopen (full_file_name, "wb"))) {
gchar *buf;
buf = gst_debug_bin_to_dot_data (bin, details);
fputs (buf, out);
g_free (buf);
fclose (out);
GST_INFO ("wrote bin graph to : '%s'", full_file_name);
} else {
GST_WARNING ("Failed to open file '%s' for writing: %s", full_file_name,
g_strerror (errno));
}
g_free (full_file_name);
}
/*
* gst_debug_bin_to_dot_file_with_ts:
* @bin: the top-level pipeline that should be analyzed
* @file_name: output base filename (e.g. "myplayer")
*
* This works like gst_debug_bin_to_dot_file(), but adds the current timestamp
* to the filename, so that it can be used to take multiple snapshots.
*/
void
gst_debug_bin_to_dot_file_with_ts (GstBin * bin,
GstDebugGraphDetails details, const gchar * file_name)
{
gchar *ts_file_name = NULL;
GstClockTime elapsed;
g_return_if_fail (GST_IS_BIN (bin));
if (!file_name) {
file_name = g_get_application_name ();
if (!file_name)
file_name = "unnamed";
}
/* add timestamp */
elapsed = GST_CLOCK_DIFF (_priv_gst_info_start_time,
gst_util_get_timestamp ());
/* we don't use GST_TIME_FORMAT as such filenames would fail on some
* filesystems like fat */
ts_file_name =
g_strdup_printf ("%u.%02u.%02u.%09u-%s", GST_TIME_ARGS (elapsed),
file_name);
gst_debug_bin_to_dot_file (bin, details, ts_file_name);
g_free (ts_file_name);
}
#else /* !GST_DISABLE_GST_DEBUG */
#ifndef GST_REMOVE_DISABLED
void
gst_debug_bin_to_dot_file (GstBin * bin, GstDebugGraphDetails details,
const gchar * file_name)
{
}
void
gst_debug_bin_to_dot_file_with_ts (GstBin * bin, GstDebugGraphDetails details,
const gchar * file_name)
{
}
#endif /* GST_REMOVE_DISABLED */
#endif /* GST_DISABLE_GST_DEBUG */
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