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gstreamer/tools/gst-xmlinspect.c
Wim Taymans 6ab7e6c15d Remove pad_alloc, this can now be done better 
Remove pad_alloc and all references. This can now be done more efficiently and
more flexible with the ALLOCATION query and the bufferpool objects. There is no
reverse negotiation yet but that will be done with an event later.
2011-04-29 13:26:19 +02:00

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/* GStreamer gst-xmlinspect
* Copyright (C) 2003 Wim Taymans <wtay@chello.be>
*
* 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., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
*/
/* FIXME 0.11: remove gst-xmlinspect and gst-feedback etc. */
#ifdef HAVE_CONFIG_H
# include "config.h"
#endif
#include <string.h>
#include <locale.h>
#include <glib/gprintf.h>
#include "tools.h"
#define PUT_START_TAG(pfx,tag) \
G_STMT_START{ \
g_print ("%*.*s<%s>\n", pfx, pfx, "", tag); \
}G_STMT_END
#define PUT_END_TAG(pfx,tag) \
G_STMT_START{ \
g_print ("%*.*s</%s>\n", pfx, pfx, "", tag); \
}G_STMT_END
#define PUT_ESCAPED(pfx,tag,value) \
G_STMT_START{ \
const gchar *toconv = value; \
if (value) { \
gchar *v = g_markup_escape_text (toconv, strlen (toconv)); \
g_print ("%*.*s<%s>%s</%s>\n", pfx, pfx, "", tag, v, tag); \
g_free (v); \
} \
}G_STMT_END
#ifdef G_HAVE_ISO_VARARGS
#define PUT_STRING(pfx, ...) \
G_STMT_START{ \
gchar *ps_val = g_strdup_printf(__VA_ARGS__); \
g_print ("%*.*s%s\n", pfx, pfx, "", ps_val); \
g_free(ps_val); \
}G_STMT_END
#elif defined(G_HAVE_GNUC_VARARGS)
#define PUT_STRING(pfx, str, a...) \
G_STMT_START{ \
g_print ("%*.*s"str"\n", pfx, pfx, "" , ##a); \
}G_STMT_END
#else
static inline void
PUT_STRING (int pfx, const char *format, ...)
{
va_list varargs;
g_print ("%*.*s", pfx, pfx, "");
va_start (varargs, format);
g_vprintf (format, varargs);
va_end (varargs);
g_print ("\n");
}
#endif
static void
print_caps (const GstCaps * caps, gint pfx)
{
char *s;
if (!caps)
return;
s = gst_caps_to_string (caps);
PUT_ESCAPED (pfx, "caps", s);
g_free (s);
}
#if 0
static void
print_formats (const GstFormat * formats, gint pfx)
{
while (formats && *formats) {
const GstFormatDefinition *definition;
definition = gst_format_get_details (*formats);
if (definition)
PUT_STRING (pfx, "<format id=\"%d\" nick=\"%s\">%s</format>",
*formats, definition->nick, definition->description);
else
PUT_STRING (pfx, "<format id=\"%d\">unknown</format>", *formats);
formats++;
}
}
#endif
static void
print_query_types (const GstQueryType * types, gint pfx)
{
while (types && *types) {
const GstQueryTypeDefinition *definition;
definition = gst_query_type_get_details (*types);
if (definition)
PUT_STRING (pfx, "<query-type id=\"%d\" nick=\"%s\">%s</query-type>",
*types, definition->nick, definition->description);
else
PUT_STRING (pfx, "<query-type id=\"%d\">unknown</query-type>", *types);
types++;
}
}
#if 0
static void
print_event_masks (const GstEventMask * masks, gint pfx)
{
GType event_type;
GEnumClass *klass;
GType event_flags;
GFlagsClass *flags_class = NULL;
event_type = gst_event_type_get_type ();
klass = (GEnumClass *) g_type_class_ref (event_type);
while (masks && masks->type) {
GEnumValue *value;
gint flags = 0, index = 0;
switch (masks->type) {
case GST_EVENT_SEEK:
flags = masks->flags;
event_flags = gst_seek_type_get_type ();
flags_class = (GFlagsClass *) g_type_class_ref (event_flags);
break;
default:
break;
}
value = g_enum_get_value (klass, masks->type);
PUT_STRING (pfx, "<event type=\"%s\">", value->value_nick);
while (flags) {
GFlagsValue *value;
if (flags & 1) {
value = g_flags_get_first_value (flags_class, 1 << index);
if (value)
PUT_ESCAPED (pfx + 1, "flag", value->value_nick);
else
PUT_ESCAPED (pfx + 1, "flag", "?");
}
flags >>= 1;
index++;
}
PUT_END_TAG (pfx, "event");
masks++;
}
}
#endif
static void
output_hierarchy (GType type, gint level, gint * maxlevel)
{
GType parent;
parent = g_type_parent (type);
*maxlevel = *maxlevel + 1;
level++;
PUT_STRING (level, "<object name=\"%s\">", g_type_name (type));
if (parent)
output_hierarchy (parent, level, maxlevel);
PUT_END_TAG (level, "object");
}
static void
print_element_properties (GstElement * element, gint pfx)
{
GParamSpec **property_specs;
guint num_properties;
gint i;
gboolean readable;
property_specs = g_object_class_list_properties
(G_OBJECT_GET_CLASS (element), &num_properties);
PUT_START_TAG (pfx, "element-properties");
for (i = 0; i < num_properties; i++) {
GValue value = { 0, };
GParamSpec *param = property_specs[i];
readable = FALSE;
g_value_init (&value, param->value_type);
if (param->flags & G_PARAM_READABLE) {
g_object_get_property (G_OBJECT (element), param->name, &value);
readable = TRUE;
}
PUT_START_TAG (pfx + 1, "element-property");
PUT_ESCAPED (pfx + 2, "name", g_param_spec_get_name (param));
PUT_ESCAPED (pfx + 2, "type", g_type_name (param->value_type));
PUT_ESCAPED (pfx + 2, "nick", g_param_spec_get_nick (param));
PUT_ESCAPED (pfx + 2, "blurb", g_param_spec_get_blurb (param));
if (readable) {
PUT_ESCAPED (pfx + 2, "flags", "RW");
} else {
PUT_ESCAPED (pfx + 2, "flags", "W");
}
switch (G_VALUE_TYPE (&value)) {
case G_TYPE_STRING:
PUT_ESCAPED (pfx + 2, "default", g_strdup_value_contents (&value));
break;
case G_TYPE_BOOLEAN:
PUT_ESCAPED (pfx + 2, "default", g_strdup_value_contents (&value));
break;
case G_TYPE_ULONG:
{
GParamSpecULong *pulong = G_PARAM_SPEC_ULONG (param);
PUT_STRING (pfx + 2, "<range min=\"%lu\" max=\"%lu\"/>",
pulong->minimum, pulong->maximum);
PUT_ESCAPED (pfx + 2, "default", g_strdup_value_contents (&value));
break;
}
case G_TYPE_LONG:
{
GParamSpecLong *plong = G_PARAM_SPEC_LONG (param);
PUT_STRING (pfx + 2, "<range min=\"%ld\" max=\"%ld\"/>",
plong->minimum, plong->maximum);
PUT_ESCAPED (pfx + 2, "default", g_strdup_value_contents (&value));
break;
}
case G_TYPE_UINT:
{
GParamSpecUInt *puint = G_PARAM_SPEC_UINT (param);
PUT_STRING (pfx + 2, "<range min=\"%u\" max=\"%u\"/>",
puint->minimum, puint->maximum);
PUT_ESCAPED (pfx + 2, "default", g_strdup_value_contents (&value));
break;
}
case G_TYPE_INT:
{
GParamSpecInt *pint = G_PARAM_SPEC_INT (param);
PUT_STRING (pfx + 2, "<range min=\"%d\" max=\"%d\"/>",
pint->minimum, pint->maximum);
PUT_ESCAPED (pfx + 2, "default", g_strdup_value_contents (&value));
break;
}
case G_TYPE_UINT64:
{
GParamSpecUInt64 *puint64 = G_PARAM_SPEC_UINT64 (param);
PUT_STRING (pfx + 2,
"<range min=\"%" G_GUINT64_FORMAT "\" max=\"%" G_GUINT64_FORMAT
"\"/>", puint64->minimum, puint64->maximum);
PUT_ESCAPED (pfx + 2, "default", g_strdup_value_contents (&value));
break;
}
case G_TYPE_INT64:
{
GParamSpecInt64 *pint64 = G_PARAM_SPEC_INT64 (param);
PUT_STRING (pfx + 2,
"<range min=\"%" G_GINT64_FORMAT "\" max=\"%" G_GINT64_FORMAT
"\"/>", pint64->minimum, pint64->maximum);
PUT_ESCAPED (pfx + 2, "default", g_strdup_value_contents (&value));
break;
}
case G_TYPE_FLOAT:
{
GParamSpecFloat *pfloat = G_PARAM_SPEC_FLOAT (param);
PUT_STRING (pfx + 2, "<range min=\"%f\" max=\"%f\"/>",
pfloat->minimum, pfloat->maximum);
PUT_ESCAPED (pfx + 2, "default", g_strdup_value_contents (&value));
break;
}
case G_TYPE_DOUBLE:
{
GParamSpecDouble *pdouble = G_PARAM_SPEC_DOUBLE (param);
PUT_STRING (pfx + 2, "<range min=\"%g\" max=\"%g\"/>",
pdouble->minimum, pdouble->maximum);
PUT_ESCAPED (pfx + 2, "default", g_strdup_value_contents (&value));
break;
}
default:
if (param->value_type == GST_TYPE_CAPS) {
GstCaps *caps = g_value_peek_pointer (&value);
if (!caps)
PUT_ESCAPED (pfx + 2, "default", "NULL");
else {
print_caps (caps, 2);
}
} else if (G_IS_PARAM_SPEC_ENUM (param)) {
GEnumValue *values;
guint j = 0;
gint enum_value;
values = G_ENUM_CLASS (g_type_class_ref (param->value_type))->values;
enum_value = g_value_get_enum (&value);
while (values[j].value_name) {
if (values[j].value == enum_value)
break;
j++;
}
PUT_STRING (pfx + 2, "<default>%d</default>", values[j].value);
PUT_START_TAG (pfx + 2, "enum-values");
j = 0;
while (values[j].value_name) {
PUT_STRING (pfx + 3, "<value value=\"%d\" nick=\"%s\"/>",
values[j].value, values[j].value_nick);
j++;
}
PUT_END_TAG (pfx + 2, "enum-values");
} else if (G_IS_PARAM_SPEC_FLAGS (param)) {
GFlagsValue *values;
guint j = 0;
gint flags_value;
values = G_FLAGS_CLASS (g_type_class_ref (param->value_type))->values;
flags_value = g_value_get_flags (&value);
PUT_STRING (pfx + 2, "<default>%d</default>", flags_value);
PUT_START_TAG (pfx + 2, "flags");
j = 0;
while (values[j].value_name) {
PUT_STRING (pfx + 3, "<flag value=\"%d\" nick=\"%s\"/>",
values[j].value, values[j].value_nick);
j++;
}
PUT_END_TAG (pfx + 2, "flags");
} else if (G_IS_PARAM_SPEC_OBJECT (param)) {
PUT_ESCAPED (pfx + 2, "object-type", g_type_name (param->value_type));
}
break;
}
PUT_END_TAG (pfx + 1, "element-property");
}
PUT_END_TAG (pfx, "element-properties");
g_free (property_specs);
}
static void
print_element_signals (GstElement * element, gint pfx)
{
guint *signals;
guint nsignals;
gint i, k;
GSignalQuery *query;
signals = g_signal_list_ids (G_OBJECT_TYPE (element), &nsignals);
for (k = 0; k < 2; k++) {
gint counted = 0;
if (k == 0)
PUT_START_TAG (pfx, "element-signals");
else
PUT_START_TAG (pfx, "element-actions");
for (i = 0; i < nsignals; i++) {
gint n_params;
GType return_type;
const GType *param_types;
gint j;
query = g_new0 (GSignalQuery, 1);
g_signal_query (signals[i], query);
if ((k == 0 && !(query->signal_flags & G_SIGNAL_ACTION)) ||
(k == 1 && (query->signal_flags & G_SIGNAL_ACTION))) {
n_params = query->n_params;
return_type = query->return_type;
param_types = query->param_types;
PUT_START_TAG (pfx + 1, "signal");
PUT_ESCAPED (pfx + 2, "name", query->signal_name);
PUT_ESCAPED (pfx + 2, "return-type", g_type_name (return_type));
PUT_ESCAPED (pfx + 2, "object-type",
g_type_name (G_OBJECT_TYPE (element)));
PUT_START_TAG (pfx + 2, "params");
for (j = 0; j < n_params; j++) {
PUT_ESCAPED (pfx + 3, "type", g_type_name (param_types[j]));
}
PUT_END_TAG (pfx + 2, "params");
PUT_END_TAG (pfx + 1, "signal");
counted++;
}
g_free (query);
}
if (k == 0)
PUT_END_TAG (pfx, "element-signals");
else
PUT_END_TAG (pfx, "element-actions");
}
}
static gboolean
put_factory_metadata (GQuark field_id, const GValue * value, gpointer user_data)
{
const gchar *key = g_quark_to_string (field_id);
const gchar *val = g_value_get_string (value);
PUT_ESCAPED (2, key, val);
return TRUE;
}
static gint
print_element_info (GstElementFactory * factory)
{
GstElement *element;
GstObjectClass *gstobject_class;
GstElementClass *gstelement_class;
GList *pads;
GstPad *pad;
GstStaticPadTemplate *padtemplate;
gint maxlevel = 0;
element = gst_element_factory_create (factory, "element");
if (!element) {
g_print ("couldn't construct element for some reason\n");
return -1;
}
PUT_START_TAG (0, "element");
PUT_ESCAPED (1, "name", GST_PLUGIN_FEATURE_NAME (factory));
gstobject_class = GST_OBJECT_CLASS (G_OBJECT_GET_CLASS (element));
gstelement_class = GST_ELEMENT_CLASS (G_OBJECT_GET_CLASS (element));
PUT_START_TAG (1, "details");
gst_structure_foreach ((GstStructure *) factory->metadata,
put_factory_metadata, NULL);
PUT_END_TAG (1, "details");
output_hierarchy (G_OBJECT_TYPE (element), 0, &maxlevel);
PUT_START_TAG (1, "pad-templates");
if (factory->numpadtemplates) {
pads = factory->staticpadtemplates;
while (pads) {
padtemplate = (GstStaticPadTemplate *) (pads->data);
pads = g_list_next (pads);
PUT_START_TAG (2, "pad-template");
PUT_ESCAPED (3, "name", padtemplate->name_template);
if (padtemplate->direction == GST_PAD_SRC)
PUT_ESCAPED (3, "direction", "src");
else if (padtemplate->direction == GST_PAD_SINK)
PUT_ESCAPED (3, "direction", "sink");
else
PUT_ESCAPED (3, "direction", "unknown");
if (padtemplate->presence == GST_PAD_ALWAYS)
PUT_ESCAPED (3, "presence", "always");
else if (padtemplate->presence == GST_PAD_SOMETIMES)
PUT_ESCAPED (3, "presence", "sometimes");
else if (padtemplate->presence == GST_PAD_REQUEST) {
PUT_ESCAPED (3, "presence", "request");
PUT_ESCAPED (3, "request-function",
GST_DEBUG_FUNCPTR_NAME (gstelement_class->request_new_pad));
} else
PUT_ESCAPED (3, "presence", "unknown");
if (padtemplate->static_caps.string) {
print_caps (gst_static_caps_get (&padtemplate->static_caps), 3);
}
PUT_END_TAG (2, "pad-template");
}
}
PUT_END_TAG (1, "pad-templates");
PUT_START_TAG (1, "element-flags");
PUT_END_TAG (1, "element-flags");
if (GST_IS_BIN (element)) {
PUT_START_TAG (1, "bin-flags");
PUT_END_TAG (1, "bin-flags");
}
PUT_START_TAG (1, "element-implementation");
PUT_STRING (2, "<state-change function=\"%s\"/>",
GST_DEBUG_FUNCPTR_NAME (gstelement_class->change_state));
PUT_END_TAG (1, "element-implementation");
PUT_START_TAG (1, "clocking-interaction");
if (gst_element_requires_clock (element)) {
PUT_STRING (2, "<requires-clock/>");
}
if (gst_element_provides_clock (element)) {
GstClock *clock;
clock = gst_element_get_clock (element);
if (clock)
PUT_STRING (2, "<provides-clock name=\"%s\"/>", GST_OBJECT_NAME (clock));
}
PUT_END_TAG (1, "clocking-interaction");
if (gst_element_is_indexable (element)) {
PUT_STRING (1, "<indexing-capabilities/>");
}
PUT_START_TAG (1, "pads");
if (element->numpads) {
const GList *pads;
pads = element->pads;
while (pads) {
pad = GST_PAD (pads->data);
pads = g_list_next (pads);
PUT_START_TAG (2, "pad");
PUT_ESCAPED (3, "name", gst_pad_get_name (pad));
if (gst_pad_get_direction (pad) == GST_PAD_SRC)
PUT_ESCAPED (3, "direction", "src");
else if (gst_pad_get_direction (pad) == GST_PAD_SINK)
PUT_ESCAPED (3, "direction", "sink");
else
PUT_ESCAPED (3, "direction", "unknown");
if (pad->padtemplate)
PUT_ESCAPED (3, "template", pad->padtemplate->name_template);
PUT_START_TAG (3, "implementation");
if (pad->chainfunc)
PUT_STRING (4, "<chain-based function=\"%s\"/>",
GST_DEBUG_FUNCPTR_NAME (pad->chainfunc));
if (pad->getrangefunc)
PUT_STRING (4, "<get-range-based function=\"%s\"/>",
GST_DEBUG_FUNCPTR_NAME (pad->getrangefunc));
if (pad->eventfunc != gst_pad_event_default)
PUT_STRING (4, "<event-function function=\"%s\"/>",
GST_DEBUG_FUNCPTR_NAME (pad->eventfunc));
if (pad->queryfunc != gst_pad_query_default)
PUT_STRING (4, "<query-function function=\"%s\"/>",
GST_DEBUG_FUNCPTR_NAME (pad->queryfunc));
if (pad->querytypefunc != gst_pad_get_query_types_default) {
PUT_STRING (4, "<query-type-func function=\"%s\">",
GST_DEBUG_FUNCPTR_NAME (pad->querytypefunc));
print_query_types (gst_pad_get_query_types (pad), 5);
PUT_END_TAG (4, "query-type-func");
}
if (pad->iterintlinkfunc != gst_pad_iterate_internal_links_default)
PUT_STRING (4, "<iterintlink-function function=\"%s\"/>",
GST_DEBUG_FUNCPTR_NAME (pad->iterintlinkfunc));
PUT_END_TAG (3, "implementation");
if (pad->caps) {
print_caps (pad->caps, 3);
}
PUT_END_TAG (2, "pad");
}
}
PUT_END_TAG (1, "pads");
print_element_properties (element, 1);
print_element_signals (element, 1);
/* for compound elements */
/* FIXME: gst_bin_get_list does not exist anymore
if (GST_IS_BIN (element)) {
GList *children;
GstElement *child;
PUT_START_TAG (1, "children");
children = (GList *) gst_bin_get_list (GST_BIN (element));
while (children) {
child = GST_ELEMENT (children->data);
children = g_list_next (children);
PUT_ESCAPED (2, "child", GST_ELEMENT_NAME (child));
}
PUT_END_TAG (1, "children");
}
*/
PUT_END_TAG (0, "element");
return 0;
}
int
main (int argc, char *argv[])
{
GstElementFactory *factory;
GOptionEntry options[] = {
GST_TOOLS_GOPTION_VERSION,
{NULL}
};
GOptionContext *ctx;
GError *err = NULL;
setlocale (LC_ALL, "");
g_thread_init (NULL);
gst_tools_set_prgname ("gst-xmlinspect");
ctx = g_option_context_new ("[ELEMENT-NAME]");
g_option_context_add_main_entries (ctx, options, GETTEXT_PACKAGE);
g_option_context_add_group (ctx, gst_init_get_option_group ());
if (!g_option_context_parse (ctx, &argc, &argv, &err)) {
g_print ("Error initializing: %s\n", err->message);
exit (1);
}
g_option_context_free (ctx);
gst_tools_print_version ("gst-xmlinspect");
/* if no arguments, print out all elements */
if (argc == 1) {
GList *features, *f;
features = gst_registry_get_feature_list (gst_registry_get_default (),
GST_TYPE_ELEMENT_FACTORY);
PUT_STRING (0, "<?xml version=\"1.0\" encoding=\"UTF-8\" ?>");
for (f = features; f != NULL; f = f->next)
print_element_info (GST_ELEMENT_FACTORY (f->data));
gst_plugin_feature_list_free (features);
return 0;
}
/* else we try to get a factory */
factory = gst_element_factory_find (argv[1]);
/* if there's a factory, print out the info */
if (factory) {
PUT_STRING (0, "<?xml version=\"1.0\" encoding=\"UTF-8\" ?>");
return print_element_info (factory);
}
/* otherwise, error out */
g_printerr ("no such element '%s'\n", argv[1]);
return -1;
}
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