2 * Copyright (C) 1999,2000 Erik Walthinsen <omega@cse.ogi.edu>
3 * 2000 Wim Taymans <wtay@chello.be>
4 * 2003 Benjamin Otte <in7y118@public.uni-hamburg.de>
5 * Copyright (C) 2008-2009 Tim-Philipp Müller <tim centricular net>
7 * gstinfo.c: debugging functions
9 * This library is free software; you can redistribute it and/or
10 * modify it under the terms of the GNU Library General Public
11 * License as published by the Free Software Foundation; either
12 * version 2 of the License, or (at your option) any later version.
14 * This library is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
17 * Library General Public License for more details.
19 * You should have received a copy of the GNU Library General Public
20 * License along with this library; if not, write to the
21 * Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
22 * Boston, MA 02110-1301, USA.
27 * @short_description: Debugging and logging facilities
28 * @see_also: #gst-running for command line parameters
29 * and environment variables that affect the debugging output.
31 * GStreamer's debugging subsystem is an easy way to get information about what
32 * the application is doing. It is not meant for programming errors. Use GLib
33 * methods (g_warning and friends) for that.
35 * The debugging subsystem works only after GStreamer has been initialized
36 * - for example by calling gst_init().
38 * The debugging subsystem is used to log informational messages while the
39 * application runs. Each messages has some properties attached to it. Among
40 * these properties are the debugging category, the severity (called "level"
41 * here) and an optional #GObject it belongs to. Each of these messages is sent
42 * to all registered debugging handlers, which then handle the messages.
43 * GStreamer attaches a default handler on startup, which outputs requested
46 * Messages are output by using shortcut macros like #GST_DEBUG,
47 * #GST_CAT_ERROR_OBJECT or similar. These all expand to calling gst_debug_log()
48 * with the right parameters.
49 * The only thing a developer will probably want to do is define his own
50 * categories. This is easily done with 3 lines. At the top of your code,
52 * the variables and set the default category.
53 * |[<!-- language="C" -->
54 * GST_DEBUG_CATEGORY_STATIC (my_category); // define category (statically)
55 * #define GST_CAT_DEFAULT my_category // set as default
57 * After that you only need to initialize the category.
58 * |[<!-- language="C" -->
59 * GST_DEBUG_CATEGORY_INIT (my_category, "my category",
60 * 0, "This is my very own");
62 * Initialization must be done before the category is used first.
64 * in their plugin_init function, libraries and applications should do that
65 * during their initialization.
67 * The whole debugging subsystem can be disabled at build time with passing the
68 * --disable-gst-debug switch to configure. If this is done, every function,
69 * macro and even structs described in this file evaluate to default values or
71 * So don't take addresses of these functions or use other tricks.
72 * If you must do that for some reason, there is still an option.
74 * subsystem was compiled out, #GST_DISABLE_GST_DEBUG is defined in
76 * so you can check that before doing your trick.
77 * Disabling the debugging subsystem will give you a slight (read: unnoticeable)
78 * speed increase and will reduce the size of your compiled code. The GStreamer
79 * library itself becomes around 10% smaller.
81 * Please note that there are naming conventions for the names of debugging
82 * categories. These are explained at GST_DEBUG_CATEGORY_INIT().
86 #include "gst_private.h"
89 #undef gst_debug_remove_log_function
90 #undef gst_debug_add_log_function
92 #ifndef GST_DISABLE_GST_DEBUG
96 #include <stdio.h> /* fprintf */
97 #include <glib/gstdio.h>
100 # include <unistd.h> /* getpid on UNIX */
102 #ifdef HAVE_PROCESS_H
103 # include <process.h> /* getpid on win32 */
105 #include <string.h> /* G_VA_COPY */
107 # define WIN32_LEAN_AND_MEAN /* prevents from including too many things */
108 # include <windows.h> /* GetStdHandle, windows console */
111 #include "gst_private.h"
112 #include "gstutils.h"
113 #include "gstquark.h"
114 #include "gstsegment.h"
115 #include "gstvalue.h"
116 #include "gstcapsfeatures.h"
118 #ifdef HAVE_VALGRIND_VALGRIND_H
119 # include <valgrind/valgrind.h>
121 #include <glib/gprintf.h> /* g_sprintf */
123 /* our own printf implementation with custom extensions to %p for caps etc. */
124 #include "printf/printf.h"
125 #include "printf/printf-extension.h"
127 static char *gst_info_printf_pointer_extension_func (const char *format,
129 #else /* GST_DISABLE_GST_DEBUG */
131 #include <glib/gprintf.h>
132 #endif /* !GST_DISABLE_GST_DEBUG */
135 /* No need for remote debugging so turn on the 'local only' optimizations in
137 #define UNW_LOCAL_ONLY
139 #include <libunwind.h>
148 #include <elfutils/libdwfl.h>
150 #endif /* HAVE_UNWIND */
152 #ifdef HAVE_BACKTRACE
153 #include <execinfo.h>
154 #define BT_BUF_SIZE 100
155 #endif /* HAVE_BACKTRACE */
157 extern gboolean gst_is_initialized (void);
159 /* we want these symbols exported even if debug is disabled, to maintain
160 * ABI compatibility. Unless GST_REMOVE_DISABLED is defined. */
161 #if !defined(GST_DISABLE_GST_DEBUG) || !defined(GST_REMOVE_DISABLED)
163 /* disabled by default, as soon as some threshold is set > NONE,
164 * it becomes enabled. */
165 gboolean _gst_debug_enabled = FALSE;
166 GstDebugLevel _gst_debug_min = GST_LEVEL_NONE;
168 GstDebugCategory *GST_CAT_DEFAULT = NULL;
170 GstDebugCategory *GST_CAT_GST_INIT = NULL;
171 GstDebugCategory *GST_CAT_MEMORY = NULL;
172 GstDebugCategory *GST_CAT_PARENTAGE = NULL;
173 GstDebugCategory *GST_CAT_STATES = NULL;
174 GstDebugCategory *GST_CAT_SCHEDULING = NULL;
176 GstDebugCategory *GST_CAT_BUFFER = NULL;
177 GstDebugCategory *GST_CAT_BUFFER_LIST = NULL;
178 GstDebugCategory *GST_CAT_BUS = NULL;
179 GstDebugCategory *GST_CAT_CAPS = NULL;
180 GstDebugCategory *GST_CAT_CLOCK = NULL;
181 GstDebugCategory *GST_CAT_ELEMENT_PADS = NULL;
182 GstDebugCategory *GST_CAT_PADS = NULL;
183 GstDebugCategory *GST_CAT_PERFORMANCE = NULL;
184 GstDebugCategory *GST_CAT_PIPELINE = NULL;
185 GstDebugCategory *GST_CAT_PLUGIN_LOADING = NULL;
186 GstDebugCategory *GST_CAT_PLUGIN_INFO = NULL;
187 GstDebugCategory *GST_CAT_PROPERTIES = NULL;
188 GstDebugCategory *GST_CAT_NEGOTIATION = NULL;
189 GstDebugCategory *GST_CAT_REFCOUNTING = NULL;
190 GstDebugCategory *GST_CAT_ERROR_SYSTEM = NULL;
191 GstDebugCategory *GST_CAT_EVENT = NULL;
192 GstDebugCategory *GST_CAT_MESSAGE = NULL;
193 GstDebugCategory *GST_CAT_PARAMS = NULL;
194 GstDebugCategory *GST_CAT_CALL_TRACE = NULL;
195 GstDebugCategory *GST_CAT_SIGNAL = NULL;
196 GstDebugCategory *GST_CAT_PROBE = NULL;
197 GstDebugCategory *GST_CAT_REGISTRY = NULL;
198 GstDebugCategory *GST_CAT_QOS = NULL;
199 GstDebugCategory *_priv_GST_CAT_POLL = NULL;
200 GstDebugCategory *GST_CAT_META = NULL;
201 GstDebugCategory *GST_CAT_LOCKING = NULL;
202 GstDebugCategory *GST_CAT_CONTEXT = NULL;
203 GstDebugCategory *_priv_GST_CAT_PROTECTION = NULL;
206 #endif /* !defined(GST_DISABLE_GST_DEBUG) || !defined(GST_REMOVE_DISABLED) */
208 #ifndef GST_DISABLE_GST_DEBUG
210 /* underscore is to prevent conflict with GST_CAT_DEBUG define */
211 GST_DEBUG_CATEGORY_STATIC (_GST_CAT_DEBUG);
215 #include <rld_interface.h>
216 typedef struct DL_INFO
218 const char *dli_fname;
220 const char *dli_sname;
224 long dli_reserved[4];
228 #define _RLD_DLADDR 14
229 int dladdr (void *address, Dl_info * dl);
232 dladdr (void *address, Dl_info * dl)
236 v = _rld_new_interface (_RLD_DLADDR, address, dl);
242 static void gst_debug_reset_threshold (gpointer category, gpointer unused);
243 static void gst_debug_reset_all_thresholds (void);
245 struct _GstDebugMessage
252 /* list of all name/level pairs from --gst-debug and GST_DEBUG */
253 static GMutex __level_name_mutex;
254 static GSList *__level_name = NULL;
262 /* list of all categories */
263 static GMutex __cat_mutex;
264 static GSList *__categories = NULL;
266 static GstDebugCategory *_gst_debug_get_category_locked (const gchar * name);
269 /* all registered debug handlers */
274 GDestroyNotify notify;
277 static GMutex __log_func_mutex;
278 static GSList *__log_functions = NULL;
280 /* whether to add the default log function in gst_init() */
281 static gboolean add_default_log_func = TRUE;
283 #define PRETTY_TAGS_DEFAULT TRUE
284 static gboolean pretty_tags = PRETTY_TAGS_DEFAULT;
286 static volatile gint G_GNUC_MAY_ALIAS __default_level = GST_LEVEL_DEFAULT;
287 static volatile gint G_GNUC_MAY_ALIAS __use_color = GST_DEBUG_COLOR_MODE_ON;
289 /* FIXME: export this? */
291 _priv_gst_in_valgrind (void)
299 in_valgrind = GST_VG_UNCHECKED;
301 if (in_valgrind == GST_VG_UNCHECKED) {
302 #ifdef HAVE_VALGRIND_VALGRIND_H
303 if (RUNNING_ON_VALGRIND) {
304 GST_CAT_INFO (GST_CAT_GST_INIT, "we're running inside valgrind");
305 in_valgrind = GST_VG_INSIDE;
307 GST_CAT_LOG (GST_CAT_GST_INIT, "not doing extra valgrind stuff");
308 in_valgrind = GST_VG_NO_VALGRIND;
311 in_valgrind = GST_VG_NO_VALGRIND;
313 g_assert (in_valgrind == GST_VG_NO_VALGRIND ||
314 in_valgrind == GST_VG_INSIDE);
316 return (in_valgrind == GST_VG_INSIDE);
320 _replace_pattern_in_gst_debug_file_name (gchar * name, const char *token,
324 if ((token_start = strstr (name, token))) {
325 gsize token_len = strlen (token);
326 gchar *name_prefix = name;
327 gchar *name_suffix = token_start + token_len;
328 token_start[0] = '\0';
329 name = g_strdup_printf ("%s%u%s", name_prefix, val, name_suffix);
330 g_free (name_prefix);
336 _priv_gst_debug_file_name (const gchar * env)
340 name = g_strdup (env);
341 name = _replace_pattern_in_gst_debug_file_name (name, "%p", getpid ());
342 name = _replace_pattern_in_gst_debug_file_name (name, "%r", g_random_int ());
347 /* Initialize the debugging system */
349 _priv_gst_debug_init (void)
354 if (add_default_log_func) {
355 env = g_getenv ("GST_DEBUG_FILE");
356 if (env != NULL && *env != '\0') {
357 if (strcmp (env, "-") == 0) {
360 gchar *name = _priv_gst_debug_file_name (env);
361 log_file = g_fopen (name, "w");
363 if (log_file == NULL) {
364 g_printerr ("Could not open log file '%s' for writing: %s\n", env,
373 gst_debug_add_log_function (gst_debug_log_default, log_file, NULL);
376 __gst_printf_pointer_extension_set_func
377 (gst_info_printf_pointer_extension_func);
379 /* do NOT use a single debug function before this line has been run */
380 GST_CAT_DEFAULT = _gst_debug_category_new ("default",
381 GST_DEBUG_UNDERLINE, NULL);
382 _GST_CAT_DEBUG = _gst_debug_category_new ("GST_DEBUG",
383 GST_DEBUG_BOLD | GST_DEBUG_FG_YELLOW, "debugging subsystem");
385 /* FIXME: add descriptions here */
386 GST_CAT_GST_INIT = _gst_debug_category_new ("GST_INIT",
387 GST_DEBUG_BOLD | GST_DEBUG_FG_RED, NULL);
388 GST_CAT_MEMORY = _gst_debug_category_new ("GST_MEMORY",
389 GST_DEBUG_BOLD | GST_DEBUG_FG_BLUE, "memory");
390 GST_CAT_PARENTAGE = _gst_debug_category_new ("GST_PARENTAGE",
391 GST_DEBUG_BOLD | GST_DEBUG_FG_WHITE | GST_DEBUG_BG_RED, NULL);
392 GST_CAT_STATES = _gst_debug_category_new ("GST_STATES",
393 GST_DEBUG_BOLD | GST_DEBUG_FG_RED, NULL);
394 GST_CAT_SCHEDULING = _gst_debug_category_new ("GST_SCHEDULING",
395 GST_DEBUG_BOLD | GST_DEBUG_FG_MAGENTA, NULL);
396 GST_CAT_BUFFER = _gst_debug_category_new ("GST_BUFFER",
397 GST_DEBUG_BOLD | GST_DEBUG_BG_GREEN, NULL);
398 GST_CAT_BUFFER_LIST = _gst_debug_category_new ("GST_BUFFER_LIST",
399 GST_DEBUG_BOLD | GST_DEBUG_BG_GREEN, NULL);
400 GST_CAT_BUS = _gst_debug_category_new ("GST_BUS", GST_DEBUG_BG_YELLOW, NULL);
401 GST_CAT_CAPS = _gst_debug_category_new ("GST_CAPS",
402 GST_DEBUG_BOLD | GST_DEBUG_FG_BLUE, NULL);
403 GST_CAT_CLOCK = _gst_debug_category_new ("GST_CLOCK",
404 GST_DEBUG_BOLD | GST_DEBUG_FG_YELLOW, NULL);
405 GST_CAT_ELEMENT_PADS = _gst_debug_category_new ("GST_ELEMENT_PADS",
406 GST_DEBUG_BOLD | GST_DEBUG_FG_WHITE | GST_DEBUG_BG_RED, NULL);
407 GST_CAT_PADS = _gst_debug_category_new ("GST_PADS",
408 GST_DEBUG_BOLD | GST_DEBUG_FG_RED | GST_DEBUG_BG_RED, NULL);
409 GST_CAT_PERFORMANCE = _gst_debug_category_new ("GST_PERFORMANCE",
410 GST_DEBUG_BOLD | GST_DEBUG_FG_WHITE | GST_DEBUG_BG_RED, NULL);
411 GST_CAT_PIPELINE = _gst_debug_category_new ("GST_PIPELINE",
412 GST_DEBUG_BOLD | GST_DEBUG_FG_WHITE | GST_DEBUG_BG_RED, NULL);
413 GST_CAT_PLUGIN_LOADING = _gst_debug_category_new ("GST_PLUGIN_LOADING",
414 GST_DEBUG_BOLD | GST_DEBUG_FG_CYAN, NULL);
415 GST_CAT_PLUGIN_INFO = _gst_debug_category_new ("GST_PLUGIN_INFO",
416 GST_DEBUG_BOLD | GST_DEBUG_FG_CYAN, NULL);
417 GST_CAT_PROPERTIES = _gst_debug_category_new ("GST_PROPERTIES",
418 GST_DEBUG_BOLD | GST_DEBUG_FG_WHITE | GST_DEBUG_BG_BLUE, NULL);
419 GST_CAT_NEGOTIATION = _gst_debug_category_new ("GST_NEGOTIATION",
420 GST_DEBUG_BOLD | GST_DEBUG_FG_BLUE, NULL);
421 GST_CAT_REFCOUNTING = _gst_debug_category_new ("GST_REFCOUNTING",
422 GST_DEBUG_BOLD | GST_DEBUG_FG_RED | GST_DEBUG_BG_BLUE, NULL);
423 GST_CAT_ERROR_SYSTEM = _gst_debug_category_new ("GST_ERROR_SYSTEM",
424 GST_DEBUG_BOLD | GST_DEBUG_FG_RED | GST_DEBUG_BG_WHITE, NULL);
426 GST_CAT_EVENT = _gst_debug_category_new ("GST_EVENT",
427 GST_DEBUG_BOLD | GST_DEBUG_FG_BLUE, NULL);
428 GST_CAT_MESSAGE = _gst_debug_category_new ("GST_MESSAGE",
429 GST_DEBUG_BOLD | GST_DEBUG_FG_WHITE | GST_DEBUG_BG_RED, NULL);
430 GST_CAT_PARAMS = _gst_debug_category_new ("GST_PARAMS",
431 GST_DEBUG_BOLD | GST_DEBUG_FG_BLACK | GST_DEBUG_BG_YELLOW, NULL);
432 GST_CAT_CALL_TRACE = _gst_debug_category_new ("GST_CALL_TRACE",
433 GST_DEBUG_BOLD, NULL);
434 GST_CAT_SIGNAL = _gst_debug_category_new ("GST_SIGNAL",
435 GST_DEBUG_BOLD | GST_DEBUG_FG_WHITE | GST_DEBUG_BG_RED, NULL);
436 GST_CAT_PROBE = _gst_debug_category_new ("GST_PROBE",
437 GST_DEBUG_BOLD | GST_DEBUG_FG_GREEN, "pad probes");
438 GST_CAT_REGISTRY = _gst_debug_category_new ("GST_REGISTRY", 0, "registry");
439 GST_CAT_QOS = _gst_debug_category_new ("GST_QOS", 0, "QoS");
440 _priv_GST_CAT_POLL = _gst_debug_category_new ("GST_POLL", 0, "poll");
441 GST_CAT_META = _gst_debug_category_new ("GST_META", 0, "meta");
442 GST_CAT_LOCKING = _gst_debug_category_new ("GST_LOCKING", 0, "locking");
443 GST_CAT_CONTEXT = _gst_debug_category_new ("GST_CONTEXT", 0, NULL);
444 _priv_GST_CAT_PROTECTION =
445 _gst_debug_category_new ("GST_PROTECTION", 0, "protection");
447 /* print out the valgrind message if we're in valgrind */
448 _priv_gst_in_valgrind ();
450 env = g_getenv ("GST_DEBUG_OPTIONS");
452 if (strstr (env, "full_tags") || strstr (env, "full-tags"))
454 else if (strstr (env, "pretty_tags") || strstr (env, "pretty-tags"))
458 if (g_getenv ("GST_DEBUG_NO_COLOR") != NULL)
459 gst_debug_set_color_mode (GST_DEBUG_COLOR_MODE_OFF);
460 env = g_getenv ("GST_DEBUG_COLOR_MODE");
462 gst_debug_set_color_mode_from_string (env);
464 env = g_getenv ("GST_DEBUG");
466 gst_debug_set_threshold_from_string (env, FALSE);
470 /* we can't do this further above, because we initialize the GST_CAT_DEFAULT struct */
471 #define GST_CAT_DEFAULT _GST_CAT_DEBUG
475 * @category: category to log
476 * @level: level of the message is in
477 * @file: the file that emitted the message, usually the __FILE__ identifier
478 * @function: the function that emitted the message
479 * @line: the line from that the message was emitted, usually __LINE__
480 * @object: (transfer none) (allow-none): the object this message relates to,
482 * @format: a printf style format string
483 * @...: optional arguments for the format
485 * Logs the given message using the currently registered debugging handlers.
488 gst_debug_log (GstDebugCategory * category, GstDebugLevel level,
489 const gchar * file, const gchar * function, gint line,
490 GObject * object, const gchar * format, ...)
494 va_start (var_args, format);
495 gst_debug_log_valist (category, level, file, function, line, object, format,
500 /* based on g_basename(), which we can't use because it was deprecated */
501 static inline const gchar *
502 gst_path_basename (const gchar * file_name)
504 register const gchar *base;
506 base = strrchr (file_name, G_DIR_SEPARATOR);
509 const gchar *q = strrchr (file_name, '/');
510 if (base == NULL || (q != NULL && q > base))
517 if (g_ascii_isalpha (file_name[0]) && file_name[1] == ':')
518 return file_name + 2;
524 * gst_debug_log_valist:
525 * @category: category to log
526 * @level: level of the message is in
527 * @file: the file that emitted the message, usually the __FILE__ identifier
528 * @function: the function that emitted the message
529 * @line: the line from that the message was emitted, usually __LINE__
530 * @object: (transfer none) (allow-none): the object this message relates to,
532 * @format: a printf style format string
533 * @args: optional arguments for the format
535 * Logs the given message using the currently registered debugging handlers.
538 gst_debug_log_valist (GstDebugCategory * category, GstDebugLevel level,
539 const gchar * file, const gchar * function, gint line,
540 GObject * object, const gchar * format, va_list args)
542 GstDebugMessage message;
546 g_return_if_fail (category != NULL);
548 if (level > gst_debug_category_get_threshold (category))
551 g_return_if_fail (file != NULL);
552 g_return_if_fail (function != NULL);
553 g_return_if_fail (format != NULL);
555 message.message = NULL;
556 message.format = format;
557 G_VA_COPY (message.arguments, args);
559 handler = __log_functions;
561 entry = handler->data;
562 handler = g_slist_next (handler);
563 entry->func (category, level, file, function, line, object, &message,
566 g_free (message.message);
567 va_end (message.arguments);
571 * gst_debug_message_get:
572 * @message: a debug message
574 * Gets the string representation of a #GstDebugMessage. This function is used
575 * in debug handlers to extract the message.
577 * Returns: the string representation of a #GstDebugMessage.
580 gst_debug_message_get (GstDebugMessage * message)
582 if (message->message == NULL) {
585 len = __gst_vasprintf (&message->message, message->format,
589 message->message = NULL;
591 return message->message;
594 #define MAX_BUFFER_DUMP_STRING_LEN 100
596 /* structure_to_pretty_string:
597 * @str: a serialized #GstStructure
599 * If the serialized structure contains large buffers such as images the hex
600 * representation of those buffers will be shortened so that the string remains
603 * Returns: the filtered string
606 prettify_structure_string (gchar * str)
608 gchar *pos = str, *end;
610 while ((pos = strstr (pos, "(buffer)"))) {
613 pos += strlen ("(buffer)");
614 for (end = pos; *end != '\0' && *end != ';' && *end != ' '; ++end)
616 if (count > MAX_BUFFER_DUMP_STRING_LEN) {
617 memcpy (pos + MAX_BUFFER_DUMP_STRING_LEN - 6, "..", 2);
618 memcpy (pos + MAX_BUFFER_DUMP_STRING_LEN - 4, pos + count - 4, 4);
619 memmove (pos + MAX_BUFFER_DUMP_STRING_LEN, pos + count,
620 strlen (pos + count) + 1);
621 pos += MAX_BUFFER_DUMP_STRING_LEN;
628 static inline gchar *
629 gst_info_structure_to_string (const GstStructure * s)
632 gchar *str = gst_structure_to_string (s);
633 if (G_UNLIKELY (pretty_tags && s->name == GST_QUARK (TAGLIST)))
634 return prettify_structure_string (str);
641 static inline gchar *
642 gst_info_describe_buffer (GstBuffer * buffer)
644 const gchar *offset_str = "none";
645 const gchar *offset_end_str = "none";
646 gchar offset_buf[32], offset_end_buf[32];
648 if (GST_BUFFER_OFFSET_IS_VALID (buffer)) {
649 g_snprintf (offset_buf, sizeof (offset_buf), "%" G_GUINT64_FORMAT,
650 GST_BUFFER_OFFSET (buffer));
651 offset_str = offset_buf;
653 if (GST_BUFFER_OFFSET_END_IS_VALID (buffer)) {
654 g_snprintf (offset_end_buf, sizeof (offset_end_buf), "%" G_GUINT64_FORMAT,
655 GST_BUFFER_OFFSET_END (buffer));
656 offset_end_str = offset_end_buf;
659 return g_strdup_printf ("buffer: %p, pts %" GST_TIME_FORMAT ", dts %"
660 GST_TIME_FORMAT ", dur %" GST_TIME_FORMAT ", size %" G_GSIZE_FORMAT
661 ", offset %s, offset_end %s, flags 0x%x", buffer,
662 GST_TIME_ARGS (GST_BUFFER_PTS (buffer)),
663 GST_TIME_ARGS (GST_BUFFER_DTS (buffer)),
664 GST_TIME_ARGS (GST_BUFFER_DURATION (buffer)),
665 gst_buffer_get_size (buffer), offset_str, offset_end_str,
666 GST_BUFFER_FLAGS (buffer));
669 static inline gchar *
670 gst_info_describe_buffer_list (GstBufferList * list)
672 GstClockTime pts = GST_CLOCK_TIME_NONE;
673 GstClockTime dts = GST_CLOCK_TIME_NONE;
674 gsize total_size = 0;
677 n = gst_buffer_list_length (list);
678 for (i = 0; i < n; ++i) {
679 GstBuffer *buf = gst_buffer_list_get (list, i);
682 pts = GST_BUFFER_PTS (buf);
683 dts = GST_BUFFER_DTS (buf);
686 total_size += gst_buffer_get_size (buf);
689 return g_strdup_printf ("bufferlist: %p, %u buffers, pts %" GST_TIME_FORMAT
690 ", dts %" GST_TIME_FORMAT ", size %" G_GSIZE_FORMAT, list, n,
691 GST_TIME_ARGS (pts), GST_TIME_ARGS (dts), total_size);
694 static inline gchar *
695 gst_info_describe_event (GstEvent * event)
699 s = gst_info_structure_to_string (gst_event_get_structure (event));
700 ret = g_strdup_printf ("%s event: %p, time %" GST_TIME_FORMAT
701 ", seq-num %d, %s", GST_EVENT_TYPE_NAME (event), event,
702 GST_TIME_ARGS (GST_EVENT_TIMESTAMP (event)), GST_EVENT_SEQNUM (event),
708 static inline gchar *
709 gst_info_describe_message (GstMessage * message)
713 s = gst_info_structure_to_string (gst_message_get_structure (message));
714 ret = g_strdup_printf ("%s message: %p, time %" GST_TIME_FORMAT
715 ", seq-num %d, element '%s', %s", GST_MESSAGE_TYPE_NAME (message),
716 message, GST_TIME_ARGS (GST_MESSAGE_TIMESTAMP (message)),
717 GST_MESSAGE_SEQNUM (message),
718 ((message->src) ? GST_ELEMENT_NAME (message->src) : "(NULL)"),
724 static inline gchar *
725 gst_info_describe_query (GstQuery * query)
729 s = gst_info_structure_to_string (gst_query_get_structure (query));
730 ret = g_strdup_printf ("%s query: %p, %s", GST_QUERY_TYPE_NAME (query),
731 query, (s ? s : "(NULL)"));
736 static inline gchar *
737 gst_info_describe_stream (GstStream * stream)
739 gchar *ret, *caps_str = NULL, *tags_str = NULL;
743 caps = gst_stream_get_caps (stream);
745 caps_str = gst_caps_to_string (caps);
746 gst_caps_unref (caps);
749 tags = gst_stream_get_tags (stream);
751 tags_str = gst_tag_list_to_string (tags);
752 gst_tag_list_unref (tags);
756 g_strdup_printf ("stream %s %p, ID %s, flags 0x%x, caps [%s], tags [%s]",
757 gst_stream_type_get_name (gst_stream_get_stream_type (stream)), stream,
758 gst_stream_get_stream_id (stream), gst_stream_get_stream_flags (stream),
759 caps_str ? caps_str : "", tags_str ? tags_str : "");
767 static inline gchar *
768 gst_info_describe_stream_collection (GstStreamCollection * collection)
771 GString *streams_str;
774 streams_str = g_string_new ("<");
775 for (i = 0; i < gst_stream_collection_get_size (collection); i++) {
776 GstStream *stream = gst_stream_collection_get_stream (collection, i);
779 s = gst_info_describe_stream (stream);
780 g_string_append_printf (streams_str, " %s,", s);
783 g_string_append (streams_str, " >");
785 ret = g_strdup_printf ("collection %p (%d streams) %s", collection,
786 gst_stream_collection_get_size (collection), streams_str->str);
788 g_string_free (streams_str, TRUE);
793 gst_debug_print_object (gpointer ptr)
795 GObject *object = (GObject *) ptr;
798 /* This is a cute trick to detect unmapped memory, but is unportable,
799 * slow, screws around with madvise, and not actually that useful. */
803 ret = madvise ((void *) ((unsigned long) ptr & (~0xfff)), 4096, 0);
804 if (ret == -1 && errno == ENOMEM) {
805 buffer = g_strdup_printf ("%p (unmapped memory)", ptr);
810 /* nicely printed object */
811 if (object == NULL) {
812 return g_strdup ("(NULL)");
814 if (GST_IS_CAPS (ptr)) {
815 return gst_caps_to_string ((const GstCaps *) ptr);
817 if (GST_IS_STRUCTURE (ptr)) {
818 return gst_info_structure_to_string ((const GstStructure *) ptr);
820 if (*(GType *) ptr == GST_TYPE_CAPS_FEATURES) {
821 return gst_caps_features_to_string ((const GstCapsFeatures *) ptr);
823 if (GST_IS_TAG_LIST (ptr)) {
824 gchar *str = gst_tag_list_to_string ((GstTagList *) ptr);
825 if (G_UNLIKELY (pretty_tags))
826 return prettify_structure_string (str);
830 if (*(GType *) ptr == GST_TYPE_DATE_TIME) {
831 return __gst_date_time_serialize ((GstDateTime *) ptr, TRUE);
833 if (GST_IS_BUFFER (ptr)) {
834 return gst_info_describe_buffer (GST_BUFFER_CAST (ptr));
836 if (GST_IS_BUFFER_LIST (ptr)) {
837 return gst_info_describe_buffer_list (GST_BUFFER_LIST_CAST (ptr));
840 if (*(guint32 *) ptr == 0xffffffff) {
841 return g_strdup_printf ("<poisoned@%p>", ptr);
844 if (GST_IS_MESSAGE (object)) {
845 return gst_info_describe_message (GST_MESSAGE_CAST (object));
847 if (GST_IS_QUERY (object)) {
848 return gst_info_describe_query (GST_QUERY_CAST (object));
850 if (GST_IS_EVENT (object)) {
851 return gst_info_describe_event (GST_EVENT_CAST (object));
853 if (GST_IS_CONTEXT (object)) {
854 GstContext *context = GST_CONTEXT_CAST (object);
857 const GstStructure *structure;
859 type = gst_context_get_context_type (context);
860 structure = gst_context_get_structure (context);
862 s = gst_info_structure_to_string (structure);
864 ret = g_strdup_printf ("context '%s'='%s'", type, s);
868 if (GST_IS_STREAM (object)) {
869 return gst_info_describe_stream (GST_STREAM_CAST (object));
871 if (GST_IS_STREAM_COLLECTION (object)) {
873 gst_info_describe_stream_collection (GST_STREAM_COLLECTION_CAST
876 if (GST_IS_PAD (object) && GST_OBJECT_NAME (object)) {
877 return g_strdup_printf ("<%s:%s>", GST_DEBUG_PAD_NAME (object));
879 if (GST_IS_OBJECT (object) && GST_OBJECT_NAME (object)) {
880 return g_strdup_printf ("<%s>", GST_OBJECT_NAME (object));
882 if (G_IS_OBJECT (object)) {
883 return g_strdup_printf ("<%s@%p>", G_OBJECT_TYPE_NAME (object), object);
886 return g_strdup_printf ("%p", ptr);
890 gst_debug_print_segment (gpointer ptr)
892 GstSegment *segment = (GstSegment *) ptr;
894 /* nicely printed segment */
895 if (segment == NULL) {
896 return g_strdup ("(NULL)");
899 switch (segment->format) {
900 case GST_FORMAT_UNDEFINED:{
901 return g_strdup_printf ("UNDEFINED segment");
903 case GST_FORMAT_TIME:{
904 return g_strdup_printf ("time segment start=%" GST_TIME_FORMAT
905 ", offset=%" GST_TIME_FORMAT ", stop=%" GST_TIME_FORMAT
906 ", rate=%f, applied_rate=%f" ", flags=0x%02x, time=%" GST_TIME_FORMAT
907 ", base=%" GST_TIME_FORMAT ", position %" GST_TIME_FORMAT
908 ", duration %" GST_TIME_FORMAT, GST_TIME_ARGS (segment->start),
909 GST_TIME_ARGS (segment->offset), GST_TIME_ARGS (segment->stop),
910 segment->rate, segment->applied_rate, (guint) segment->flags,
911 GST_TIME_ARGS (segment->time), GST_TIME_ARGS (segment->base),
912 GST_TIME_ARGS (segment->position), GST_TIME_ARGS (segment->duration));
915 const gchar *format_name;
917 format_name = gst_format_get_name (segment->format);
918 if (G_UNLIKELY (format_name == NULL))
919 format_name = "(UNKNOWN FORMAT)";
920 return g_strdup_printf ("%s segment start=%" G_GINT64_FORMAT
921 ", offset=%" G_GINT64_FORMAT ", stop=%" G_GINT64_FORMAT
922 ", rate=%f, applied_rate=%f" ", flags=0x%02x, time=%" G_GINT64_FORMAT
923 ", base=%" G_GINT64_FORMAT ", position %" G_GINT64_FORMAT
924 ", duration %" G_GINT64_FORMAT, format_name, segment->start,
925 segment->offset, segment->stop, segment->rate, segment->applied_rate,
926 (guint) segment->flags, segment->time, segment->base,
927 segment->position, segment->duration);
933 gst_info_printf_pointer_extension_func (const char *format, void *ptr)
937 if (format[0] == 'p' && format[1] == '\a') {
939 case 'A': /* GST_PTR_FORMAT */
940 s = gst_debug_print_object (ptr);
942 case 'B': /* GST_SEGMENT_FORMAT */
943 s = gst_debug_print_segment (ptr);
945 case 'a': /* GST_WRAPPED_PTR_FORMAT */
946 s = priv_gst_string_take_and_wrap (gst_debug_print_object (ptr));
949 /* must have been compiled against a newer version with an extension
950 * we don't known about yet - just ignore and fallback to %p below */
955 s = g_strdup_printf ("%p", ptr);
961 * gst_debug_construct_term_color:
962 * @colorinfo: the color info
964 * Constructs a string that can be used for getting the desired color in color
966 * You need to free the string after use.
968 * Returns: (transfer full) (type gchar*): a string containing the color
972 gst_debug_construct_term_color (guint colorinfo)
976 color = g_string_new ("\033[00");
978 if (colorinfo & GST_DEBUG_BOLD) {
979 g_string_append_len (color, ";01", 3);
981 if (colorinfo & GST_DEBUG_UNDERLINE) {
982 g_string_append_len (color, ";04", 3);
984 if (colorinfo & GST_DEBUG_FG_MASK) {
985 g_string_append_printf (color, ";3%1d", colorinfo & GST_DEBUG_FG_MASK);
987 if (colorinfo & GST_DEBUG_BG_MASK) {
988 g_string_append_printf (color, ";4%1d",
989 (colorinfo & GST_DEBUG_BG_MASK) >> 4);
991 g_string_append_c (color, 'm');
993 return g_string_free (color, FALSE);
997 * gst_debug_construct_win_color:
998 * @colorinfo: the color info
1000 * Constructs an integer that can be used for getting the desired color in
1001 * windows' terminals (cmd.exe). As there is no mean to underline, we simply
1002 * ignore this attribute.
1004 * This function returns 0 on non-windows machines.
1006 * Returns: an integer containing the color definition
1009 gst_debug_construct_win_color (guint colorinfo)
1013 static const guchar ansi_to_win_fg[8] = {
1015 FOREGROUND_RED, /* red */
1016 FOREGROUND_GREEN, /* green */
1017 FOREGROUND_RED | FOREGROUND_GREEN, /* yellow */
1018 FOREGROUND_BLUE, /* blue */
1019 FOREGROUND_RED | FOREGROUND_BLUE, /* magenta */
1020 FOREGROUND_GREEN | FOREGROUND_BLUE, /* cyan */
1021 FOREGROUND_RED | FOREGROUND_GREEN | FOREGROUND_BLUE /* white */
1023 static const guchar ansi_to_win_bg[8] = {
1027 BACKGROUND_RED | BACKGROUND_GREEN,
1029 BACKGROUND_RED | BACKGROUND_BLUE,
1030 BACKGROUND_GREEN | FOREGROUND_BLUE,
1031 BACKGROUND_RED | BACKGROUND_GREEN | BACKGROUND_BLUE
1034 /* we draw black as white, as cmd.exe can only have black bg */
1035 if ((colorinfo & (GST_DEBUG_FG_MASK | GST_DEBUG_BG_MASK)) == 0) {
1036 color = ansi_to_win_fg[7];
1038 if (colorinfo & GST_DEBUG_UNDERLINE) {
1039 color |= BACKGROUND_INTENSITY;
1041 if (colorinfo & GST_DEBUG_BOLD) {
1042 color |= FOREGROUND_INTENSITY;
1044 if (colorinfo & GST_DEBUG_FG_MASK) {
1045 color |= ansi_to_win_fg[colorinfo & GST_DEBUG_FG_MASK];
1047 if (colorinfo & GST_DEBUG_BG_MASK) {
1048 color |= ansi_to_win_bg[(colorinfo & GST_DEBUG_BG_MASK) >> 4];
1054 /* width of %p varies depending on actual value of pointer, which can make
1055 * output unevenly aligned if multiple threads are involved, hence the %14p
1056 * (should really be %18p, but %14p seems a good compromise between too many
1057 * white spaces and likely unalignment on my system) */
1058 #if defined (GLIB_SIZEOF_VOID_P) && GLIB_SIZEOF_VOID_P == 8
1059 #define PTR_FMT "%14p"
1061 #define PTR_FMT "%10p"
1063 #define PID_FMT "%5d"
1064 #define CAT_FMT "%20s %s:%d:%s:%s"
1067 static const guchar levelcolormap_w32[GST_LEVEL_COUNT] = {
1068 /* GST_LEVEL_NONE */
1069 FOREGROUND_RED | FOREGROUND_GREEN | FOREGROUND_BLUE,
1070 /* GST_LEVEL_ERROR */
1071 FOREGROUND_RED | FOREGROUND_INTENSITY,
1072 /* GST_LEVEL_WARNING */
1073 FOREGROUND_RED | FOREGROUND_GREEN | FOREGROUND_INTENSITY,
1074 /* GST_LEVEL_INFO */
1075 FOREGROUND_GREEN | FOREGROUND_INTENSITY,
1076 /* GST_LEVEL_DEBUG */
1077 FOREGROUND_GREEN | FOREGROUND_BLUE,
1079 FOREGROUND_RED | FOREGROUND_GREEN | FOREGROUND_BLUE,
1080 /* GST_LEVEL_FIXME */
1081 FOREGROUND_RED | FOREGROUND_GREEN,
1082 /* GST_LEVEL_TRACE */
1083 FOREGROUND_RED | FOREGROUND_GREEN | FOREGROUND_BLUE,
1084 /* placeholder for log level 8 */
1086 /* GST_LEVEL_MEMDUMP */
1087 FOREGROUND_RED | FOREGROUND_GREEN | FOREGROUND_BLUE
1090 static const guchar available_colors[] = {
1091 FOREGROUND_RED, FOREGROUND_GREEN, FOREGROUND_RED | FOREGROUND_GREEN,
1092 FOREGROUND_BLUE, FOREGROUND_RED | FOREGROUND_BLUE,
1093 FOREGROUND_GREEN | FOREGROUND_BLUE,
1095 #endif /* G_OS_WIN32 */
1096 static const gchar *levelcolormap[GST_LEVEL_COUNT] = {
1097 "\033[37m", /* GST_LEVEL_NONE */
1098 "\033[31;01m", /* GST_LEVEL_ERROR */
1099 "\033[33;01m", /* GST_LEVEL_WARNING */
1100 "\033[32;01m", /* GST_LEVEL_INFO */
1101 "\033[36m", /* GST_LEVEL_DEBUG */
1102 "\033[37m", /* GST_LEVEL_LOG */
1103 "\033[33;01m", /* GST_LEVEL_FIXME */
1104 "\033[37m", /* GST_LEVEL_TRACE */
1105 "\033[37m", /* placeholder for log level 8 */
1106 "\033[37m" /* GST_LEVEL_MEMDUMP */
1110 * gst_debug_log_default:
1111 * @category: category to log
1112 * @level: level of the message
1113 * @file: the file that emitted the message, usually the __FILE__ identifier
1114 * @function: the function that emitted the message
1115 * @line: the line from that the message was emitted, usually __LINE__
1116 * @message: the actual message
1117 * @object: (transfer none) (allow-none): the object this message relates to,
1119 * @user_data: the FILE* to log to
1121 * The default logging handler used by GStreamer. Logging functions get called
1122 * whenever a macro like GST_DEBUG or similar is used. By default this function
1123 * is setup to output the message and additional info to stderr (or the log file
1124 * specified via the GST_DEBUG_FILE environment variable) as received via
1127 * You can add other handlers by using gst_debug_add_log_function().
1128 * And you can remove this handler by calling
1129 * gst_debug_remove_log_function(gst_debug_log_default);
1132 gst_debug_log_default (GstDebugCategory * category, GstDebugLevel level,
1133 const gchar * file, const gchar * function, gint line,
1134 GObject * object, GstDebugMessage * message, gpointer user_data)
1137 GstClockTime elapsed;
1139 GstDebugColorMode color_mode;
1140 FILE *log_file = user_data ? user_data : stderr;
1143 /* __FILE__ might be a file name or an absolute path or a
1144 * relative path, irrespective of the exact compiler used,
1145 * in which case we want to shorten it to the filename for
1148 if (c == '.' || c == '/' || c == '\\' || (c != '\0' && file[1] == ':')) {
1149 file = gst_path_basename (file);
1153 color_mode = gst_debug_get_color_mode ();
1156 obj = gst_debug_print_object (object);
1161 elapsed = GST_CLOCK_DIFF (_priv_gst_start_time, gst_util_get_timestamp ());
1163 if (color_mode != GST_DEBUG_COLOR_MODE_OFF) {
1165 /* We take a lock to keep colors and content together.
1166 * Maybe there is a better way but for now this will do the right
1168 static GMutex win_print_mutex;
1169 g_mutex_lock (&win_print_mutex);
1170 if (color_mode == GST_DEBUG_COLOR_MODE_UNIX) {
1172 /* colors, non-windows */
1173 gchar *color = NULL;
1176 const gchar *levelcolor;
1178 color = gst_debug_construct_term_color (gst_debug_category_get_color
1181 g_sprintf (pidcolor, "\033[3%1dm", pid % 6 + 31);
1182 levelcolor = levelcolormap[level];
1184 #define PRINT_FMT " %s"PID_FMT"%s "PTR_FMT" %s%s%s %s"CAT_FMT"%s %s\n"
1185 fprintf (log_file, "%" GST_TIME_FORMAT PRINT_FMT, GST_TIME_ARGS (elapsed),
1186 pidcolor, pid, clear, g_thread_self (), levelcolor,
1187 gst_debug_level_get_name (level), clear, color,
1188 gst_debug_category_get_name (category), file, line, function, obj,
1189 clear, gst_debug_message_get (message));
1195 /* colors, windows. */
1196 const gint clear = FOREGROUND_RED | FOREGROUND_GREEN | FOREGROUND_BLUE;
1197 #define SET_COLOR(c) G_STMT_START { \
1198 if (log_file == stderr) \
1199 SetConsoleTextAttribute (GetStdHandle (STD_ERROR_HANDLE), (c)); \
1202 fprintf (log_file, "%" GST_TIME_FORMAT " ", GST_TIME_ARGS (elapsed));
1205 SET_COLOR (available_colors[pid % G_N_ELEMENTS (available_colors)]);
1206 fprintf (log_file, PID_FMT, pid);
1210 fprintf (log_file, " " PTR_FMT " ", g_thread_self ());
1213 SET_COLOR (levelcolormap_w32[level]);
1214 fprintf (log_file, "%s ", gst_debug_level_get_name (level));
1217 SET_COLOR (gst_debug_construct_win_color (gst_debug_category_get_color
1219 fprintf (log_file, CAT_FMT, gst_debug_category_get_name (category),
1220 file, line, function, obj);
1224 fprintf (log_file, " %s\n", gst_debug_message_get (message));
1227 g_mutex_unlock (&win_print_mutex);
1230 /* no color, all platforms */
1231 #define PRINT_FMT " "PID_FMT" "PTR_FMT" %s "CAT_FMT" %s\n"
1232 fprintf (log_file, "%" GST_TIME_FORMAT PRINT_FMT, GST_TIME_ARGS (elapsed),
1233 pid, g_thread_self (), gst_debug_level_get_name (level),
1234 gst_debug_category_get_name (category), file, line, function, obj,
1235 gst_debug_message_get (message));
1245 * gst_debug_level_get_name:
1246 * @level: the level to get the name for
1248 * Get the string representation of a debugging level
1253 gst_debug_level_get_name (GstDebugLevel level)
1256 case GST_LEVEL_NONE:
1258 case GST_LEVEL_ERROR:
1260 case GST_LEVEL_WARNING:
1262 case GST_LEVEL_INFO:
1264 case GST_LEVEL_DEBUG:
1268 case GST_LEVEL_FIXME:
1270 case GST_LEVEL_TRACE:
1272 case GST_LEVEL_MEMDUMP:
1275 g_warning ("invalid level specified for gst_debug_level_get_name");
1281 * gst_debug_add_log_function:
1282 * @func: the function to use
1283 * @user_data: user data
1284 * @notify: called when @user_data is not used anymore
1286 * Adds the logging function to the list of logging functions.
1287 * Be sure to use #G_GNUC_NO_INSTRUMENT on that function, it is needed.
1290 gst_debug_add_log_function (GstLogFunction func, gpointer user_data,
1291 GDestroyNotify notify)
1293 LogFuncEntry *entry;
1297 func = gst_debug_log_default;
1299 entry = g_slice_new (LogFuncEntry);
1301 entry->user_data = user_data;
1302 entry->notify = notify;
1303 /* FIXME: we leak the old list here - other threads might access it right now
1304 * in gst_debug_logv. Another solution is to lock the mutex in gst_debug_logv,
1305 * but that is waaay costly.
1306 * It'd probably be clever to use some kind of RCU here, but I don't know
1307 * anything about that.
1309 g_mutex_lock (&__log_func_mutex);
1310 list = g_slist_copy (__log_functions);
1311 __log_functions = g_slist_prepend (list, entry);
1312 g_mutex_unlock (&__log_func_mutex);
1314 if (gst_is_initialized ())
1315 GST_DEBUG ("prepended log function %p (user data %p) to log functions",
1320 gst_debug_compare_log_function_by_func (gconstpointer entry, gconstpointer func)
1322 gpointer entryfunc = (gpointer) (((LogFuncEntry *) entry)->func);
1324 return (entryfunc < func) ? -1 : (entryfunc > func) ? 1 : 0;
1328 gst_debug_compare_log_function_by_data (gconstpointer entry, gconstpointer data)
1330 gpointer entrydata = ((LogFuncEntry *) entry)->user_data;
1332 return (entrydata < data) ? -1 : (entrydata > data) ? 1 : 0;
1336 gst_debug_remove_with_compare_func (GCompareFunc func, gpointer data)
1339 GSList *new, *cleanup = NULL;
1342 g_mutex_lock (&__log_func_mutex);
1343 new = __log_functions;
1345 while ((found = g_slist_find_custom (new, data, func))) {
1346 if (new == __log_functions) {
1347 /* make a copy when we have the first hit, so that we modify the copy and
1348 * make that the new list later */
1349 new = g_slist_copy (new);
1352 cleanup = g_slist_prepend (cleanup, found->data);
1353 new = g_slist_delete_link (new, found);
1356 /* FIXME: We leak the old list here. See _add_log_function for why. */
1357 __log_functions = new;
1358 g_mutex_unlock (&__log_func_mutex);
1361 LogFuncEntry *entry = cleanup->data;
1364 entry->notify (entry->user_data);
1366 g_slice_free (LogFuncEntry, entry);
1367 cleanup = g_slist_delete_link (cleanup, cleanup);
1373 * gst_debug_remove_log_function:
1374 * @func: (scope call) (allow-none): the log function to remove, or %NULL to
1375 * remove the default log function
1377 * Removes all registered instances of the given logging functions.
1379 * Returns: How many instances of the function were removed
1382 gst_debug_remove_log_function (GstLogFunction func)
1387 func = gst_debug_log_default;
1390 gst_debug_remove_with_compare_func
1391 (gst_debug_compare_log_function_by_func, (gpointer) func);
1393 if (gst_is_initialized ()) {
1394 GST_DEBUG ("removed log function %p %d times from log function list", func,
1397 /* If the default log function is removed before gst_init() was called,
1398 * set a flag so we don't add it in gst_init() later */
1399 if (func == gst_debug_log_default) {
1400 add_default_log_func = FALSE;
1409 * gst_debug_remove_log_function_by_data:
1410 * @data: user data of the log function to remove
1412 * Removes all registered instances of log functions with the given user data.
1414 * Returns: How many instances of the function were removed
1417 gst_debug_remove_log_function_by_data (gpointer data)
1422 gst_debug_remove_with_compare_func
1423 (gst_debug_compare_log_function_by_data, data);
1425 if (gst_is_initialized ())
1427 ("removed %d log functions with user data %p from log function list",
1434 * gst_debug_set_colored:
1435 * @colored: Whether to use colored output or not
1437 * Sets or unsets the use of coloured debugging output.
1438 * Same as gst_debug_set_color_mode () with the argument being
1439 * being GST_DEBUG_COLOR_MODE_ON or GST_DEBUG_COLOR_MODE_OFF.
1441 * This function may be called before gst_init().
1444 gst_debug_set_colored (gboolean colored)
1446 GstDebugColorMode new_mode;
1447 new_mode = colored ? GST_DEBUG_COLOR_MODE_ON : GST_DEBUG_COLOR_MODE_OFF;
1448 g_atomic_int_set (&__use_color, (gint) new_mode);
1452 * gst_debug_set_color_mode:
1453 * @mode: The coloring mode for debug output. See @GstDebugColorMode.
1455 * Changes the coloring mode for debug output.
1457 * This function may be called before gst_init().
1462 gst_debug_set_color_mode (GstDebugColorMode mode)
1464 g_atomic_int_set (&__use_color, mode);
1468 * gst_debug_set_color_mode_from_string:
1469 * @mode: The coloring mode for debug output. One of the following:
1470 * "on", "auto", "off", "disable", "unix".
1472 * Changes the coloring mode for debug output.
1474 * This function may be called before gst_init().
1479 gst_debug_set_color_mode_from_string (const gchar * mode)
1481 if ((strcmp (mode, "on") == 0) || (strcmp (mode, "auto") == 0))
1482 gst_debug_set_color_mode (GST_DEBUG_COLOR_MODE_ON);
1483 else if ((strcmp (mode, "off") == 0) || (strcmp (mode, "disable") == 0))
1484 gst_debug_set_color_mode (GST_DEBUG_COLOR_MODE_OFF);
1485 else if (strcmp (mode, "unix") == 0)
1486 gst_debug_set_color_mode (GST_DEBUG_COLOR_MODE_UNIX);
1490 * gst_debug_is_colored:
1492 * Checks if the debugging output should be colored.
1494 * Returns: %TRUE, if the debug output should be colored.
1497 gst_debug_is_colored (void)
1499 GstDebugColorMode mode = g_atomic_int_get (&__use_color);
1500 return (mode == GST_DEBUG_COLOR_MODE_UNIX || mode == GST_DEBUG_COLOR_MODE_ON);
1504 * gst_debug_get_color_mode:
1506 * Changes the coloring mode for debug output.
1508 * Returns: see @GstDebugColorMode for possible values.
1513 gst_debug_get_color_mode (void)
1515 return g_atomic_int_get (&__use_color);
1519 * gst_debug_set_active:
1520 * @active: Whether to use debugging output or not
1522 * If activated, debugging messages are sent to the debugging
1524 * It makes sense to deactivate it for speed issues.
1525 * <note><para>This function is not threadsafe. It makes sense to only call it
1526 * during initialization.</para></note>
1529 gst_debug_set_active (gboolean active)
1531 _gst_debug_enabled = active;
1533 _gst_debug_min = GST_LEVEL_COUNT;
1535 _gst_debug_min = GST_LEVEL_NONE;
1539 * gst_debug_is_active:
1541 * Checks if debugging output is activated.
1543 * Returns: %TRUE, if debugging is activated
1546 gst_debug_is_active (void)
1548 return _gst_debug_enabled;
1552 * gst_debug_set_default_threshold:
1553 * @level: level to set
1555 * Sets the default threshold to the given level and updates all categories to
1556 * use this threshold.
1558 * This function may be called before gst_init().
1561 gst_debug_set_default_threshold (GstDebugLevel level)
1563 g_atomic_int_set (&__default_level, level);
1564 gst_debug_reset_all_thresholds ();
1568 * gst_debug_get_default_threshold:
1570 * Returns the default threshold that is used for new categories.
1572 * Returns: the default threshold level
1575 gst_debug_get_default_threshold (void)
1577 return (GstDebugLevel) g_atomic_int_get (&__default_level);
1581 gst_debug_reset_threshold (gpointer category, gpointer unused)
1583 GstDebugCategory *cat = (GstDebugCategory *) category;
1586 g_mutex_lock (&__level_name_mutex);
1587 walk = __level_name;
1589 LevelNameEntry *entry = walk->data;
1591 walk = g_slist_next (walk);
1592 if (g_pattern_match_string (entry->pat, cat->name)) {
1593 if (gst_is_initialized ())
1594 GST_LOG ("category %s matches pattern %p - gets set to level %d",
1595 cat->name, entry->pat, entry->level);
1596 gst_debug_category_set_threshold (cat, entry->level);
1600 gst_debug_category_set_threshold (cat, gst_debug_get_default_threshold ());
1603 g_mutex_unlock (&__level_name_mutex);
1607 gst_debug_reset_all_thresholds (void)
1609 g_mutex_lock (&__cat_mutex);
1610 g_slist_foreach (__categories, gst_debug_reset_threshold, NULL);
1611 g_mutex_unlock (&__cat_mutex);
1615 for_each_threshold_by_entry (gpointer data, gpointer user_data)
1617 GstDebugCategory *cat = (GstDebugCategory *) data;
1618 LevelNameEntry *entry = (LevelNameEntry *) user_data;
1620 if (g_pattern_match_string (entry->pat, cat->name)) {
1621 if (gst_is_initialized ())
1622 GST_LOG ("category %s matches pattern %p - gets set to level %d",
1623 cat->name, entry->pat, entry->level);
1624 gst_debug_category_set_threshold (cat, entry->level);
1629 * gst_debug_set_threshold_for_name:
1630 * @name: name of the categories to set
1631 * @level: level to set them to
1633 * Sets all categories which match the given glob style pattern to the given
1637 gst_debug_set_threshold_for_name (const gchar * name, GstDebugLevel level)
1640 LevelNameEntry *entry;
1642 g_return_if_fail (name != NULL);
1644 pat = g_pattern_spec_new (name);
1645 entry = g_slice_new (LevelNameEntry);
1647 entry->level = level;
1648 g_mutex_lock (&__level_name_mutex);
1649 __level_name = g_slist_prepend (__level_name, entry);
1650 g_mutex_unlock (&__level_name_mutex);
1651 g_mutex_lock (&__cat_mutex);
1652 g_slist_foreach (__categories, for_each_threshold_by_entry, entry);
1653 g_mutex_unlock (&__cat_mutex);
1657 * gst_debug_unset_threshold_for_name:
1658 * @name: name of the categories to set
1660 * Resets all categories with the given name back to the default level.
1663 gst_debug_unset_threshold_for_name (const gchar * name)
1668 g_return_if_fail (name != NULL);
1670 pat = g_pattern_spec_new (name);
1671 g_mutex_lock (&__level_name_mutex);
1672 walk = __level_name;
1673 /* improve this if you want, it's mighty slow */
1675 LevelNameEntry *entry = walk->data;
1677 if (g_pattern_spec_equal (entry->pat, pat)) {
1678 __level_name = g_slist_remove_link (__level_name, walk);
1679 g_pattern_spec_free (entry->pat);
1680 g_slice_free (LevelNameEntry, entry);
1681 g_slist_free_1 (walk);
1682 walk = __level_name;
1684 walk = g_slist_next (walk);
1687 g_mutex_unlock (&__level_name_mutex);
1688 g_pattern_spec_free (pat);
1689 gst_debug_reset_all_thresholds ();
1693 _gst_debug_category_new (const gchar * name, guint color,
1694 const gchar * description)
1696 GstDebugCategory *cat, *catfound;
1698 g_return_val_if_fail (name != NULL, NULL);
1700 cat = g_slice_new (GstDebugCategory);
1701 cat->name = g_strdup (name);
1703 if (description != NULL) {
1704 cat->description = g_strdup (description);
1706 cat->description = g_strdup ("no description");
1708 g_atomic_int_set (&cat->threshold, 0);
1709 gst_debug_reset_threshold (cat, NULL);
1711 /* add to category list */
1712 g_mutex_lock (&__cat_mutex);
1713 catfound = _gst_debug_get_category_locked (name);
1715 g_free ((gpointer) cat->name);
1716 g_free ((gpointer) cat->description);
1717 g_slice_free (GstDebugCategory, cat);
1720 __categories = g_slist_prepend (__categories, cat);
1722 g_mutex_unlock (&__cat_mutex);
1728 * gst_debug_category_free:
1729 * @category: #GstDebugCategory to free.
1731 * Removes and frees the category and all associated resources.
1734 gst_debug_category_free (GstDebugCategory * category)
1736 if (category == NULL)
1739 /* remove from category list */
1740 g_mutex_lock (&__cat_mutex);
1741 __categories = g_slist_remove (__categories, category);
1742 g_mutex_unlock (&__cat_mutex);
1744 g_free ((gpointer) category->name);
1745 g_free ((gpointer) category->description);
1746 g_slice_free (GstDebugCategory, category);
1750 * gst_debug_category_set_threshold:
1751 * @category: a #GstDebugCategory to set threshold of.
1752 * @level: the #GstDebugLevel threshold to set.
1754 * Sets the threshold of the category to the given level. Debug information will
1755 * only be output if the threshold is lower or equal to the level of the
1756 * debugging message.
1758 * Do not use this function in production code, because other functions may
1759 * change the threshold of categories as side effect. It is however a nice
1760 * function to use when debugging (even from gdb).
1764 gst_debug_category_set_threshold (GstDebugCategory * category,
1765 GstDebugLevel level)
1767 g_return_if_fail (category != NULL);
1769 if (level > _gst_debug_min) {
1770 _gst_debug_enabled = TRUE;
1771 _gst_debug_min = level;
1774 g_atomic_int_set (&category->threshold, level);
1778 * gst_debug_category_reset_threshold:
1779 * @category: a #GstDebugCategory to reset threshold of.
1781 * Resets the threshold of the category to the default level. Debug information
1782 * will only be output if the threshold is lower or equal to the level of the
1783 * debugging message.
1784 * Use this function to set the threshold back to where it was after using
1785 * gst_debug_category_set_threshold().
1788 gst_debug_category_reset_threshold (GstDebugCategory * category)
1790 gst_debug_reset_threshold (category, NULL);
1794 * gst_debug_category_get_threshold:
1795 * @category: a #GstDebugCategory to get threshold of.
1797 * Returns the threshold of a #GstDebugCategory.
1799 * Returns: the #GstDebugLevel that is used as threshold.
1802 gst_debug_category_get_threshold (GstDebugCategory * category)
1804 return (GstDebugLevel) g_atomic_int_get (&category->threshold);
1808 * gst_debug_category_get_name:
1809 * @category: a #GstDebugCategory to get name of.
1811 * Returns the name of a debug category.
1813 * Returns: the name of the category.
1816 gst_debug_category_get_name (GstDebugCategory * category)
1818 return category->name;
1822 * gst_debug_category_get_color:
1823 * @category: a #GstDebugCategory to get the color of.
1825 * Returns the color of a debug category used when printing output in this
1828 * Returns: the color of the category.
1831 gst_debug_category_get_color (GstDebugCategory * category)
1833 return category->color;
1837 * gst_debug_category_get_description:
1838 * @category: a #GstDebugCategory to get the description of.
1840 * Returns the description of a debug category.
1842 * Returns: the description of the category.
1845 gst_debug_category_get_description (GstDebugCategory * category)
1847 return category->description;
1851 * gst_debug_get_all_categories:
1853 * Returns a snapshot of a all categories that are currently in use . This list
1854 * may change anytime.
1855 * The caller has to free the list after use.
1857 * Returns: (transfer container) (element-type Gst.DebugCategory): the list of
1861 gst_debug_get_all_categories (void)
1865 g_mutex_lock (&__cat_mutex);
1866 ret = g_slist_copy (__categories);
1867 g_mutex_unlock (&__cat_mutex);
1872 static GstDebugCategory *
1873 _gst_debug_get_category_locked (const gchar * name)
1875 GstDebugCategory *ret = NULL;
1878 for (node = __categories; node; node = g_slist_next (node)) {
1879 ret = (GstDebugCategory *) node->data;
1880 if (!strcmp (name, ret->name)) {
1888 _gst_debug_get_category (const gchar * name)
1890 GstDebugCategory *ret;
1892 g_mutex_lock (&__cat_mutex);
1893 ret = _gst_debug_get_category_locked (name);
1894 g_mutex_unlock (&__cat_mutex);
1900 parse_debug_category (gchar * str, const gchar ** category)
1905 /* works in place */
1908 if (str[0] != '\0') {
1917 parse_debug_level (gchar * str, GstDebugLevel * level)
1922 /* works in place */
1925 if (g_ascii_isdigit (str[0])) {
1928 l = strtoul (str, &endptr, 10);
1929 if (endptr > str && endptr[0] == 0) {
1930 *level = (GstDebugLevel) l;
1934 } else if (strcmp (str, "ERROR") == 0) {
1935 *level = GST_LEVEL_ERROR;
1936 } else if (strncmp (str, "WARN", 4) == 0) {
1937 *level = GST_LEVEL_WARNING;
1938 } else if (strcmp (str, "FIXME") == 0) {
1939 *level = GST_LEVEL_FIXME;
1940 } else if (strcmp (str, "INFO") == 0) {
1941 *level = GST_LEVEL_INFO;
1942 } else if (strcmp (str, "DEBUG") == 0) {
1943 *level = GST_LEVEL_DEBUG;
1944 } else if (strcmp (str, "LOG") == 0) {
1945 *level = GST_LEVEL_LOG;
1946 } else if (strcmp (str, "TRACE") == 0) {
1947 *level = GST_LEVEL_TRACE;
1948 } else if (strcmp (str, "MEMDUMP") == 0) {
1949 *level = GST_LEVEL_MEMDUMP;
1957 * gst_debug_set_threshold_from_string:
1958 * @list: comma-separated list of "category:level" pairs to be used
1959 * as debug logging levels
1960 * @reset: %TRUE to clear all previously-set debug levels before setting
1962 * %FALSE if adding the threshold described by @list to the one already set.
1964 * Sets the debug logging wanted in the same form as with the GST_DEBUG
1965 * environment variable. You can use wildcards such as '*', but note that
1966 * the order matters when you use wild cards, e.g. "foosrc:6,*src:3,*:2" sets
1967 * everything to log level 2.
1972 gst_debug_set_threshold_from_string (const gchar * list, gboolean reset)
1980 gst_debug_set_default_threshold (0);
1982 split = g_strsplit (list, ",", 0);
1984 for (walk = split; *walk; walk++) {
1985 if (strchr (*walk, ':')) {
1986 gchar **values = g_strsplit (*walk, ":", 2);
1988 if (values[0] && values[1]) {
1989 GstDebugLevel level;
1990 const gchar *category;
1992 if (parse_debug_category (values[0], &category)
1993 && parse_debug_level (values[1], &level))
1994 gst_debug_set_threshold_for_name (category, level);
1997 g_strfreev (values);
1999 GstDebugLevel level;
2001 if (parse_debug_level (*walk, &level))
2002 gst_debug_set_default_threshold (level);
2009 /*** FUNCTION POINTERS ********************************************************/
2011 static GHashTable *__gst_function_pointers; /* NULL */
2012 static GMutex __dbg_functions_mutex;
2014 /* This function MUST NOT return NULL */
2016 _gst_debug_nameof_funcptr (GstDebugFuncPtr func)
2024 if (G_UNLIKELY (func == NULL))
2027 g_mutex_lock (&__dbg_functions_mutex);
2028 if (G_LIKELY (__gst_function_pointers)) {
2029 ptrname = g_hash_table_lookup (__gst_function_pointers, (gpointer) func);
2030 g_mutex_unlock (&__dbg_functions_mutex);
2031 if (G_LIKELY (ptrname))
2034 g_mutex_unlock (&__dbg_functions_mutex);
2036 /* we need to create an entry in the hash table for this one so we don't leak
2039 if (dladdr ((gpointer) func, &dl_info) && dl_info.dli_sname) {
2040 gchar *name = g_strdup (dl_info.dli_sname);
2042 _gst_debug_register_funcptr (func, name);
2047 gchar *name = g_strdup_printf ("%p", (gpointer) func);
2049 _gst_debug_register_funcptr (func, name);
2055 _gst_debug_register_funcptr (GstDebugFuncPtr func, const gchar * ptrname)
2057 gpointer ptr = (gpointer) func;
2059 g_mutex_lock (&__dbg_functions_mutex);
2061 if (!__gst_function_pointers)
2062 __gst_function_pointers = g_hash_table_new (g_direct_hash, g_direct_equal);
2063 if (!g_hash_table_lookup (__gst_function_pointers, ptr))
2064 g_hash_table_insert (__gst_function_pointers, ptr, (gpointer) ptrname);
2066 g_mutex_unlock (&__dbg_functions_mutex);
2070 gst_info_dump_mem_line (gchar * linebuf, gsize linebuf_size,
2071 const guint8 * mem, gsize mem_offset, gsize mem_size)
2073 gchar hexstr[50], ascstr[18], digitstr[4];
2085 while (i < mem_size) {
2086 ascstr[i] = (g_ascii_isprint (mem[i])) ? mem[i] : '.';
2087 g_snprintf (digitstr, sizeof (digitstr), "%02x ", mem[i]);
2088 g_strlcat (hexstr, digitstr, sizeof (hexstr));
2094 g_snprintf (linebuf, linebuf_size, "%08x: %-48.48s %-16.16s",
2095 (guint) mem_offset, hexstr, ascstr);
2099 _gst_debug_dump_mem (GstDebugCategory * cat, const gchar * file,
2100 const gchar * func, gint line, GObject * obj, const gchar * msg,
2101 const guint8 * data, guint length)
2105 gst_debug_log ((cat), GST_LEVEL_MEMDUMP, file, func, line, obj, "--------"
2106 "-------------------------------------------------------------------");
2108 if (msg != NULL && *msg != '\0') {
2109 gst_debug_log ((cat), GST_LEVEL_MEMDUMP, file, func, line, obj, "%s", msg);
2112 while (off < length) {
2115 /* gst_info_dump_mem_line will process 16 bytes at most */
2116 gst_info_dump_mem_line (buf, sizeof (buf), data, off, length - off);
2117 gst_debug_log (cat, GST_LEVEL_MEMDUMP, file, func, line, obj, "%s", buf);
2121 gst_debug_log ((cat), GST_LEVEL_MEMDUMP, file, func, line, obj, "--------"
2122 "-------------------------------------------------------------------");
2125 #else /* !GST_DISABLE_GST_DEBUG */
2126 #ifndef GST_REMOVE_DISABLED
2129 _gst_debug_category_new (const gchar * name, guint color,
2130 const gchar * description)
2136 _gst_debug_register_funcptr (GstDebugFuncPtr func, const gchar * ptrname)
2140 /* This function MUST NOT return NULL */
2142 _gst_debug_nameof_funcptr (GstDebugFuncPtr func)
2148 gst_debug_log (GstDebugCategory * category, GstDebugLevel level,
2149 const gchar * file, const gchar * function, gint line,
2150 GObject * object, const gchar * format, ...)
2155 gst_debug_log_valist (GstDebugCategory * category, GstDebugLevel level,
2156 const gchar * file, const gchar * function, gint line,
2157 GObject * object, const gchar * format, va_list args)
2162 gst_debug_message_get (GstDebugMessage * message)
2168 gst_debug_log_default (GstDebugCategory * category, GstDebugLevel level,
2169 const gchar * file, const gchar * function, gint line,
2170 GObject * object, GstDebugMessage * message, gpointer unused)
2175 gst_debug_level_get_name (GstDebugLevel level)
2181 gst_debug_add_log_function (GstLogFunction func, gpointer user_data,
2182 GDestroyNotify notify)
2187 gst_debug_remove_log_function (GstLogFunction func)
2193 gst_debug_remove_log_function_by_data (gpointer data)
2199 gst_debug_set_active (gboolean active)
2204 gst_debug_is_active (void)
2210 gst_debug_set_colored (gboolean colored)
2215 gst_debug_set_color_mode (GstDebugColorMode mode)
2220 gst_debug_set_color_mode_from_string (const gchar * str)
2225 gst_debug_is_colored (void)
2231 gst_debug_get_color_mode (void)
2233 return GST_DEBUG_COLOR_MODE_OFF;
2237 gst_debug_set_threshold_from_string (const gchar * list, gboolean reset)
2242 gst_debug_set_default_threshold (GstDebugLevel level)
2247 gst_debug_get_default_threshold (void)
2249 return GST_LEVEL_NONE;
2253 gst_debug_set_threshold_for_name (const gchar * name, GstDebugLevel level)
2258 gst_debug_unset_threshold_for_name (const gchar * name)
2263 gst_debug_category_free (GstDebugCategory * category)
2268 gst_debug_category_set_threshold (GstDebugCategory * category,
2269 GstDebugLevel level)
2274 gst_debug_category_reset_threshold (GstDebugCategory * category)
2279 gst_debug_category_get_threshold (GstDebugCategory * category)
2281 return GST_LEVEL_NONE;
2285 gst_debug_category_get_name (GstDebugCategory * category)
2291 gst_debug_category_get_color (GstDebugCategory * category)
2297 gst_debug_category_get_description (GstDebugCategory * category)
2303 gst_debug_get_all_categories (void)
2309 _gst_debug_get_category (const gchar * name)
2315 gst_debug_construct_term_color (guint colorinfo)
2317 return g_strdup ("00");
2321 gst_debug_construct_win_color (guint colorinfo)
2327 _priv_gst_in_valgrind (void)
2333 _gst_debug_dump_mem (GstDebugCategory * cat, const gchar * file,
2334 const gchar * func, gint line, GObject * obj, const gchar * msg,
2335 const guint8 * data, guint length)
2338 #endif /* GST_REMOVE_DISABLED */
2339 #endif /* GST_DISABLE_GST_DEBUG */
2341 /* Need this for _gst_element_error_printf even if GST_REMOVE_DISABLED is set:
2342 * fallback function that cleans up the format string and replaces all pointer
2343 * extension formats with plain %p. */
2344 #ifdef GST_DISABLE_GST_DEBUG
2346 __gst_info_fallback_vasprintf (char **result, char const *format, va_list args)
2348 gchar *clean_format, *c;
2354 clean_format = g_strdup (format);
2356 while ((c = strstr (c, "%p\a"))) {
2357 if (c[3] < 'A' || c[3] > 'Z') {
2361 len = strlen (c + 4);
2362 memmove (c + 2, c + 4, len + 1);
2365 while ((c = strstr (clean_format, "%P"))) /* old GST_PTR_FORMAT */
2367 while ((c = strstr (clean_format, "%Q"))) /* old GST_SEGMENT_FORMAT */
2370 len = g_vasprintf (result, clean_format, args);
2372 g_free (clean_format);
2374 if (*result == NULL)
2382 * gst_info_vasprintf:
2383 * @result: (out): the resulting string
2384 * @format: a printf style format string
2385 * @args: the va_list of printf arguments for @format
2387 * Allocates and fills a string large enough (including the terminating null
2388 * byte) to hold the specified printf style @format and @args.
2390 * This function deals with the GStreamer specific printf specifiers
2391 * #GST_PTR_FORMAT and #GST_SEGMENT_FORMAT. If you do not have these specifiers
2392 * in your @format string, you do not need to use this function and can use
2393 * alternatives such as g_vasprintf().
2395 * Free @result with g_free().
2397 * Returns: the length of the string allocated into @result or -1 on any error
2402 gst_info_vasprintf (gchar ** result, const gchar * format, va_list args)
2404 /* This will fallback to __gst_info_fallback_vasprintf() via a #define in
2405 * gst_private.h if the debug system is disabled which will remove the gst
2406 * specific printf format specifiers */
2407 return __gst_vasprintf (result, format, args);
2411 * gst_info_strdup_vprintf:
2412 * @format: a printf style format string
2413 * @args: the va_list of printf arguments for @format
2415 * Allocates, fills and returns a null terminated string from the printf style
2416 * @format string and @args.
2418 * See gst_info_vasprintf() for when this function is required.
2420 * Free with g_free().
2422 * Returns: a newly allocated null terminated string or %NULL on any error
2427 gst_info_strdup_vprintf (const gchar * format, va_list args)
2431 if (gst_info_vasprintf (&ret, format, args) < 0)
2438 * gst_info_strdup_printf:
2439 * @format: a printf style format string
2440 * @...: the printf arguments for @format
2442 * Allocates, fills and returns a 0-terminated string from the printf style
2443 * @format string and corresponding arguments.
2445 * See gst_info_vasprintf() for when this function is required.
2447 * Free with g_free().
2449 * Returns: a newly allocated null terminated string or %NULL on any error
2454 gst_info_strdup_printf (const gchar * format, ...)
2459 va_start (args, format);
2460 ret = gst_info_strdup_vprintf (format, args);
2468 * @format: a printf style format string
2469 * @...: the printf arguments for @format
2471 * Outputs a formatted message via the GLib print handler. The default print
2472 * handler simply outputs the message to stdout.
2474 * This function will not append a new-line character at the end, unlike
2475 * gst_println() which will.
2477 * All strings must be in ASCII or UTF-8 encoding.
2479 * This function differs from g_print() in that it supports all the additional
2480 * printf specifiers that are supported by GStreamer's debug logging system,
2481 * such as #GST_PTR_FORMAT and #GST_SEGMENT_FORMAT.
2483 * This function is primarily for printing debug output.
2488 gst_print (const gchar * format, ...)
2493 va_start (args, format);
2494 str = gst_info_strdup_vprintf (format, args);
2497 g_print ("%s", str);
2503 * @format: a printf style format string
2504 * @...: the printf arguments for @format
2506 * Outputs a formatted message via the GLib print handler. The default print
2507 * handler simply outputs the message to stdout.
2509 * This function will append a new-line character at the end, unlike
2510 * gst_print() which will not.
2512 * All strings must be in ASCII or UTF-8 encoding.
2514 * This function differs from g_print() in that it supports all the additional
2515 * printf specifiers that are supported by GStreamer's debug logging system,
2516 * such as #GST_PTR_FORMAT and #GST_SEGMENT_FORMAT.
2518 * This function is primarily for printing debug output.
2523 gst_println (const gchar * format, ...)
2528 va_start (args, format);
2529 str = gst_info_strdup_vprintf (format, args);
2532 g_print ("%s\n", str);
2538 * @format: a printf style format string
2539 * @...: the printf arguments for @format
2541 * Outputs a formatted message via the GLib error message handler. The default
2542 * handler simply outputs the message to stderr.
2544 * This function will not append a new-line character at the end, unlike
2545 * gst_printerrln() which will.
2547 * All strings must be in ASCII or UTF-8 encoding.
2549 * This function differs from g_printerr() in that it supports the additional
2550 * printf specifiers that are supported by GStreamer's debug logging system,
2551 * such as #GST_PTR_FORMAT and #GST_SEGMENT_FORMAT.
2553 * This function is primarily for printing debug output.
2558 gst_printerr (const gchar * format, ...)
2563 va_start (args, format);
2564 str = gst_info_strdup_vprintf (format, args);
2567 g_printerr ("%s", str);
2573 * @format: a printf style format string
2574 * @...: the printf arguments for @format
2576 * Outputs a formatted message via the GLib error message handler. The default
2577 * handler simply outputs the message to stderr.
2579 * This function will append a new-line character at the end, unlike
2580 * gst_printerr() which will not.
2582 * All strings must be in ASCII or UTF-8 encoding.
2584 * This function differs from g_printerr() in that it supports the additional
2585 * printf specifiers that are supported by GStreamer's debug logging system,
2586 * such as #GST_PTR_FORMAT and #GST_SEGMENT_FORMAT.
2588 * This function is primarily for printing debug output.
2593 gst_printerrln (const gchar * format, ...)
2598 va_start (args, format);
2599 str = gst_info_strdup_vprintf (format, args);
2602 g_printerr ("%s\n", str);
2609 append_debug_info (GString * trace, Dwfl * dwfl, const void *ip)
2613 Dwfl_Module *module;
2614 const gchar *function_name;
2616 if (dwfl_linux_proc_report (dwfl, getpid ()) != 0)
2619 if (dwfl_report_end (dwfl, NULL, NULL))
2622 addr = (uintptr_t) ip;
2623 module = dwfl_addrmodule (dwfl, addr);
2624 function_name = dwfl_module_addrname (module, addr);
2626 g_string_append_printf (trace, "%s (", function_name ? function_name : "??");
2628 line = dwfl_getsrc (dwfl, addr);
2632 const gchar *filename = dwfl_lineinfo (line, &addr,
2633 &nline, NULL, NULL, NULL);
2635 g_string_append_printf (trace, "%s:%d", strrchr (filename,
2636 G_DIR_SEPARATOR) + 1, nline);
2638 const gchar *eflfile = NULL;
2640 dwfl_module_info (module, NULL, NULL, NULL, NULL, NULL, &eflfile, NULL);
2641 g_string_append_printf (trace, "%s:%p", eflfile ? eflfile : "??", ip);
2646 #endif /* HAVE_DW */
2649 generate_unwind_trace (void)
2652 unw_cursor_t cursor;
2653 gboolean use_libunwind = TRUE;
2654 GString *trace = g_string_new (NULL);
2659 Dwfl_Callbacks callbacks = {
2660 .find_elf = dwfl_linux_proc_find_elf,
2661 .find_debuginfo = dwfl_standard_find_debuginfo,
2664 dwfl = dwfl_begin (&callbacks);
2665 #endif /* HAVE_DW */
2667 unw_getcontext (&uc);
2668 unw_init_local (&cursor, &uc);
2670 while (unw_step (&cursor) > 0) {
2675 unw_get_reg (&cursor, UNW_REG_IP, &ip);
2676 if (append_debug_info (trace, dwfl, (void *) (ip - 4))) {
2677 use_libunwind = FALSE;
2678 g_string_append (trace, ")\n");
2681 #endif /* HAVE_DW */
2683 if (use_libunwind) {
2686 unw_word_t offset = 0;
2687 unw_get_proc_name (&cursor, name, sizeof (name), &offset);
2688 g_string_append_printf (trace, "%s (0x%" G_GSIZE_FORMAT ")\n", name,
2697 return g_string_free (trace, FALSE);
2700 #endif /* HAVE_UNWIND */
2702 #ifdef HAVE_BACKTRACE
2704 generate_backtrace_trace (void)
2707 void *buffer[BT_BUF_SIZE];
2711 trace = g_string_new (NULL);
2712 nptrs = backtrace (buffer, BT_BUF_SIZE);
2714 strings = backtrace_symbols (buffer, nptrs);
2719 for (j = 0; j < nptrs; j++)
2720 g_string_append_printf (trace, "%s\n", strings[j]);
2722 return g_string_free (trace, FALSE);
2724 #endif /* HAVE_BACKTRACE */
2727 * gst_debug_get_stack_trace:
2729 * If libunwind or glibc backtrace are present, a stack trace
2733 gst_debug_get_stack_trace (void)
2735 gchar *trace = NULL;
2738 trace = generate_unwind_trace ();
2741 #endif /* HAVE_UNWIND */
2743 #ifdef HAVE_BACKTRACE
2744 trace = generate_backtrace_trace ();
2745 #endif /* HAVE_BACKTRACE */
2751 * gst_debug_print_stack_trace:
2753 * If libunwind or glibc backtrace are present
2754 * a stack trace is printed.
2757 gst_debug_print_stack_trace (void)
2759 gchar *trace = gst_debug_get_stack_trace ();
2762 g_print ("%s\n", trace);