gstreamer/gst/gstinfo.c

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/* GStreamer
* Copyright (C) 1999,2000 Erik Walthinsen <omega@cse.ogi.edu>
* 2000 Wim Taymans <wtay@chello.be>
*
* gstinfo.c: INFO, ERROR, and DEBUG systems
*
* 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.
*/
#include "gst_private.h"
#include "gst.h"
extern gchar *_gst_progname;
/***** DEBUG system *****/
GHashTable *__gst_function_pointers = NULL;
/***** INFO system *****/
GstInfoHandler _gst_info_handler = gst_default_info_handler;
#ifdef GST_INFO_ENABLED_VERBOSE
guint32 _gst_info_categories = 0xffffffff;
#else
guint32 _gst_info_categories = 0x00000001;
#endif
static gchar *_gst_info_category_strings[] = {
"GST_INIT",
"COTHREADS",
"COTHREAD_SWITCH",
"AUTOPLUG",
"AUTOPLUG_ATTEMPT",
"PARENTAGE",
"STATES",
"PLANING",
"SCHEDULING",
"OPERATION",
"BUFFER",
"CAPS",
"CLOCK",
"ELEMENT_PADS",
"ELEMENTFACTORY",
"PADS",
"PIPELINE",
"PLUGIN_LOADING",
"PLUGIN_ERRORS",
"PROPERTIES",
"THREAD",
"TYPES",
"XML",
};
/**
* gst_default_info_handler:
* @category: category of the INFO message
* @file: the file the INFO occurs in
* @function: the function the INFO occurs in
* @line: the line number in the file
* @debug_string: the current debug_string in the function, if any
* @element: pointer to the #GstElement in question
* @string: the actual INFO string
*
* Prints out the INFO mesage in a variant of the following form:
*
* INFO:gst_function:542(args): [elementname] something neat happened
*/
void
gst_default_info_handler (gint category, gchar *file, gchar *function,
gint line, gchar *debug_string,
void *element, gchar *string)
{
gchar *empty = "";
gchar *elementname = empty,*location = empty;
if (debug_string == NULL) debug_string = "";
if (category != GST_CAT_GST_INIT)
location = g_strdup_printf("%s:%d%s:",function,line,debug_string);
if (element && GST_IS_ELEMENT (element))
elementname = g_strdup_printf (" [%s]",gst_element_get_name (element));
fprintf(stderr,"INFO:%s%s %s\n",location,elementname,string);
if (location != empty) g_free(location);
if (elementname != empty) g_free(elementname);
g_free(string);
}
/**
* gst_info_set_categories:
* @categories: bitmask of INFO categories to enable
*
* Enable the output of INFO categories based on the given bitmask.
* The bit for any given category is (1 << GST_CAT_...).
*/
void
gst_info_set_categories (guint32 categories) {
_gst_info_categories = categories;
if (categories)
GST_INFO (0, "setting INFO categories to 0x%08X",categories);
}
/**
* gst_info_get_categories:
*
* Returns: the current bitmask of enabled INFO categories
* The bit for any given category is (1 << GST_CAT_...).
*/
guint32
gst_info_get_categories () {
return _gst_info_categories;
}
/**
* gst_info_enable_category:
* @category: the category to enable
*
* Enables the given GST_CAT_... INFO category.
*/
void
gst_info_enable_category (gint category) {
_gst_info_categories |= (1 << category);
if (_gst_info_categories)
GST_INFO (0, "setting INFO categories to 0x%08X",_gst_info_categories);
}
/**
* gst_info_disable_category:
* @category: the category to disable
*
* Disables the given GST_CAT_... INFO category.
*/
void
gst_info_disable_category (gint category) {
_gst_info_categories &= ~ (1 << category);
if (_gst_info_categories)
GST_INFO (0, "setting INFO categories to 0x%08X",_gst_info_categories);
}
/***** DEBUG system *****/
guint32 _gst_debug_categories = 0x00000000;
/**
* gst_debug_set_categories:
* @categories: bitmask of DEBUG categories to enable
*
* Enable the output of DEBUG categories based on the given bitmask.
* The bit for any given category is (1 << GST_CAT_...).
*/
void
gst_debug_set_categories (guint32 categories) {
_gst_debug_categories = categories;
if (categories)
GST_INFO (0, "setting DEBUG categories to 0x%08X",categories);
}
/**
* gst_debug_get_categories:
*
* Returns: the current bitmask of enabled DEBUG categories
* The bit for any given category is (1 << GST_CAT_...).
*/
guint32
gst_debug_get_categories () {
return _gst_debug_categories;
}
/**
* gst_debug_enable_category:
* @category: the category to enable
*
* Enables the given GST_CAT_... DEBUG category.
*/
void
gst_debug_enable_category (gint category) {
_gst_debug_categories |= (1 << category);
if (_gst_debug_categories)
GST_INFO (0, "setting DEBUG categories to 0x%08X",_gst_debug_categories);
}
/**
* gst_debug_disable_category:
* @category: the category to disable
*
* Disables the given GST_CAT_... DEBUG category.
*/
void
gst_debug_disable_category (gint category) {
_gst_debug_categories &= ~ (1 << category);
if (_gst_debug_categories)
GST_INFO (0, "setting DEBUG categories to 0x%08X",_gst_debug_categories);
}
/**
* gst_get_category_name:
* @category: the category to return the name of
*
* Returns: string containing the name of the category
*/
const gchar *
gst_get_category_name (gint category) {
if ((category >= 0) && (category < GST_CAT_MAX_CATEGORY))
return _gst_info_category_strings[category];
else
return NULL;
}
/***** ERROR system *****/
GstErrorHandler _gst_error_handler = gst_default_error_handler;
/**
* gst_default_error_handler:
* @file: the file the ERROR occurs in
* @function: the function the INFO occurs in
* @line: the line number in the file
* @debug_string: the current debug_string in the function, if any
* @element: pointer to the #GstElement in question
* @object: pointer to a related object
* @string: the actual ERROR string
*
* Prints out the given ERROR string in a variant of the following format:
*
* ***** GStreamer ERROR ***** in file gstsomething.c at gst_function:399(arg)
* Element: /pipeline/thread/element.src
* Error: peer is null!
* ***** attempting to stack trace.... *****
*
* At the end, it attempts to print the stack trace via GDB.
*/
void
gst_default_error_handler (gchar *file, gchar *function,
gint line, gchar *debug_string,
void *element, void *object, gchar *string)
{
int chars = 0;
gchar *path;
int i;
// if there are NULL pointers, point them to null strings to clean up output
if (!debug_string) debug_string = "";
if (!string) string = "";
// print out a preamble
fprintf(stderr,"***** GStreamer ERROR ***** in file %s at %s:%d%s\n",
file,function,line,debug_string);
// if there's an element, print out the pertinent information
if (element) {
if (GST_IS_OBJECT(element)) {
path = gst_object_get_path_string(element);
fprintf(stderr,"Element: %s",path);
chars = 9 + strlen(path);
g_free(path);
} else {
fprintf(stderr,"Element ptr: %p",element);
chars = 15 + sizeof(void*)*2;
}
}
// if there's an object, print it out as well
if (object) {
// attempt to pad the line, or create a new one
if (chars < 40)
for (i=0;i<(40-chars)/8+1;i++) fprintf(stderr,"\t");
else
fprintf(stderr,"\n");
if (GST_IS_OBJECT(object)) {
path = gst_object_get_path_string(object);
fprintf(stderr,"Object: %s",path);
g_free(path);
} else {
fprintf(stderr,"Object ptr: %p",object);
}
}
fprintf(stderr,"\n");
fprintf(stderr,"Error: %s\n",string);
g_free(string);
fprintf(stderr,"***** attempting to stack trace.... *****\n");
g_on_error_stack_trace (_gst_progname);
exit(1);
}