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 const gchar *_gst_debug_filter = NULL;
244 static void gst_debug_reset_threshold (gpointer category, gpointer unused);
245 static void gst_debug_reset_all_thresholds (void);
247 struct _GstDebugMessage
254 /* list of all name/level pairs from --gst-debug and GST_DEBUG */
255 static GMutex __level_name_mutex;
256 static GSList *__level_name = NULL;
264 /* list of all categories */
265 static GMutex __cat_mutex;
266 static GSList *__categories = NULL;
268 static GstDebugCategory *_gst_debug_get_category_locked (const gchar * name);
271 /* all registered debug handlers */
276 GDestroyNotify notify;
279 static GMutex __log_func_mutex;
280 static GSList *__log_functions = NULL;
282 /* whether to add the default log function in gst_init() */
283 static gboolean add_default_log_func = TRUE;
285 #define PRETTY_TAGS_DEFAULT TRUE
286 static gboolean pretty_tags = PRETTY_TAGS_DEFAULT;
288 static volatile gint G_GNUC_MAY_ALIAS __default_level = GST_LEVEL_DEFAULT;
289 static volatile gint G_GNUC_MAY_ALIAS __use_color = GST_DEBUG_COLOR_MODE_ON;
291 /* FIXME: export this? */
293 _priv_gst_in_valgrind (void)
301 in_valgrind = GST_VG_UNCHECKED;
303 if (in_valgrind == GST_VG_UNCHECKED) {
304 #ifdef HAVE_VALGRIND_VALGRIND_H
305 if (RUNNING_ON_VALGRIND) {
306 GST_CAT_INFO (GST_CAT_GST_INIT, "we're running inside valgrind");
307 in_valgrind = GST_VG_INSIDE;
309 GST_CAT_LOG (GST_CAT_GST_INIT, "not doing extra valgrind stuff");
310 in_valgrind = GST_VG_NO_VALGRIND;
313 in_valgrind = GST_VG_NO_VALGRIND;
315 g_assert (in_valgrind == GST_VG_NO_VALGRIND ||
316 in_valgrind == GST_VG_INSIDE);
318 return (in_valgrind == GST_VG_INSIDE);
322 _replace_pattern_in_gst_debug_file_name (gchar * name, const char *token,
326 if ((token_start = strstr (name, token))) {
327 gsize token_len = strlen (token);
328 gchar *name_prefix = name;
329 gchar *name_suffix = token_start + token_len;
330 token_start[0] = '\0';
331 name = g_strdup_printf ("%s%u%s", name_prefix, val, name_suffix);
332 g_free (name_prefix);
338 _priv_gst_debug_file_name (const gchar * env)
342 name = g_strdup (env);
343 name = _replace_pattern_in_gst_debug_file_name (name, "%p", getpid ());
344 name = _replace_pattern_in_gst_debug_file_name (name, "%r", g_random_int ());
349 /* Initialize the debugging system */
351 _priv_gst_debug_init (void)
356 if (add_default_log_func) {
357 env = g_getenv ("GST_DEBUG_FILE");
358 if (env != NULL && *env != '\0') {
359 if (strcmp (env, "-") == 0) {
362 gchar *name = _priv_gst_debug_file_name (env);
363 log_file = g_fopen (name, "w");
365 if (log_file == NULL) {
366 g_printerr ("Could not open log file '%s' for writing: %s\n", env,
375 gst_debug_add_log_function (gst_debug_log_default, log_file, NULL);
378 __gst_printf_pointer_extension_set_func
379 (gst_info_printf_pointer_extension_func);
381 /* do NOT use a single debug function before this line has been run */
382 GST_CAT_DEFAULT = _gst_debug_category_new ("default",
383 GST_DEBUG_UNDERLINE, NULL);
384 _GST_CAT_DEBUG = _gst_debug_category_new ("GST_DEBUG",
385 GST_DEBUG_BOLD | GST_DEBUG_FG_YELLOW, "debugging subsystem");
387 /* FIXME: add descriptions here */
388 GST_CAT_GST_INIT = _gst_debug_category_new ("GST_INIT",
389 GST_DEBUG_BOLD | GST_DEBUG_FG_RED, NULL);
390 GST_CAT_MEMORY = _gst_debug_category_new ("GST_MEMORY",
391 GST_DEBUG_BOLD | GST_DEBUG_FG_BLUE, "memory");
392 GST_CAT_PARENTAGE = _gst_debug_category_new ("GST_PARENTAGE",
393 GST_DEBUG_BOLD | GST_DEBUG_FG_WHITE | GST_DEBUG_BG_RED, NULL);
394 GST_CAT_STATES = _gst_debug_category_new ("GST_STATES",
395 GST_DEBUG_BOLD | GST_DEBUG_FG_RED, NULL);
396 GST_CAT_SCHEDULING = _gst_debug_category_new ("GST_SCHEDULING",
397 GST_DEBUG_BOLD | GST_DEBUG_FG_MAGENTA, NULL);
398 GST_CAT_BUFFER = _gst_debug_category_new ("GST_BUFFER",
399 GST_DEBUG_BOLD | GST_DEBUG_BG_GREEN, NULL);
400 GST_CAT_BUFFER_LIST = _gst_debug_category_new ("GST_BUFFER_LIST",
401 GST_DEBUG_BOLD | GST_DEBUG_BG_GREEN, NULL);
402 GST_CAT_BUS = _gst_debug_category_new ("GST_BUS", GST_DEBUG_BG_YELLOW, NULL);
403 GST_CAT_CAPS = _gst_debug_category_new ("GST_CAPS",
404 GST_DEBUG_BOLD | GST_DEBUG_FG_BLUE, NULL);
405 GST_CAT_CLOCK = _gst_debug_category_new ("GST_CLOCK",
406 GST_DEBUG_BOLD | GST_DEBUG_FG_YELLOW, NULL);
407 GST_CAT_ELEMENT_PADS = _gst_debug_category_new ("GST_ELEMENT_PADS",
408 GST_DEBUG_BOLD | GST_DEBUG_FG_WHITE | GST_DEBUG_BG_RED, NULL);
409 GST_CAT_PADS = _gst_debug_category_new ("GST_PADS",
410 GST_DEBUG_BOLD | GST_DEBUG_FG_RED | GST_DEBUG_BG_RED, NULL);
411 GST_CAT_PERFORMANCE = _gst_debug_category_new ("GST_PERFORMANCE",
412 GST_DEBUG_BOLD | GST_DEBUG_FG_WHITE | GST_DEBUG_BG_RED, NULL);
413 GST_CAT_PIPELINE = _gst_debug_category_new ("GST_PIPELINE",
414 GST_DEBUG_BOLD | GST_DEBUG_FG_WHITE | GST_DEBUG_BG_RED, NULL);
415 GST_CAT_PLUGIN_LOADING = _gst_debug_category_new ("GST_PLUGIN_LOADING",
416 GST_DEBUG_BOLD | GST_DEBUG_FG_CYAN, NULL);
417 GST_CAT_PLUGIN_INFO = _gst_debug_category_new ("GST_PLUGIN_INFO",
418 GST_DEBUG_BOLD | GST_DEBUG_FG_CYAN, NULL);
419 GST_CAT_PROPERTIES = _gst_debug_category_new ("GST_PROPERTIES",
420 GST_DEBUG_BOLD | GST_DEBUG_FG_WHITE | GST_DEBUG_BG_BLUE, NULL);
421 GST_CAT_NEGOTIATION = _gst_debug_category_new ("GST_NEGOTIATION",
422 GST_DEBUG_BOLD | GST_DEBUG_FG_BLUE, NULL);
423 GST_CAT_REFCOUNTING = _gst_debug_category_new ("GST_REFCOUNTING",
424 GST_DEBUG_BOLD | GST_DEBUG_FG_RED | GST_DEBUG_BG_BLUE, NULL);
425 GST_CAT_ERROR_SYSTEM = _gst_debug_category_new ("GST_ERROR_SYSTEM",
426 GST_DEBUG_BOLD | GST_DEBUG_FG_RED | GST_DEBUG_BG_WHITE, NULL);
428 GST_CAT_EVENT = _gst_debug_category_new ("GST_EVENT",
429 GST_DEBUG_BOLD | GST_DEBUG_FG_BLUE, NULL);
430 GST_CAT_MESSAGE = _gst_debug_category_new ("GST_MESSAGE",
431 GST_DEBUG_BOLD | GST_DEBUG_FG_WHITE | GST_DEBUG_BG_RED, NULL);
432 GST_CAT_PARAMS = _gst_debug_category_new ("GST_PARAMS",
433 GST_DEBUG_BOLD | GST_DEBUG_FG_BLACK | GST_DEBUG_BG_YELLOW, NULL);
434 GST_CAT_CALL_TRACE = _gst_debug_category_new ("GST_CALL_TRACE",
435 GST_DEBUG_BOLD, NULL);
436 GST_CAT_SIGNAL = _gst_debug_category_new ("GST_SIGNAL",
437 GST_DEBUG_BOLD | GST_DEBUG_FG_WHITE | GST_DEBUG_BG_RED, NULL);
438 GST_CAT_PROBE = _gst_debug_category_new ("GST_PROBE",
439 GST_DEBUG_BOLD | GST_DEBUG_FG_GREEN, "pad probes");
440 GST_CAT_REGISTRY = _gst_debug_category_new ("GST_REGISTRY", 0, "registry");
441 GST_CAT_QOS = _gst_debug_category_new ("GST_QOS", 0, "QoS");
442 _priv_GST_CAT_POLL = _gst_debug_category_new ("GST_POLL", 0, "poll");
443 GST_CAT_META = _gst_debug_category_new ("GST_META", 0, "meta");
444 GST_CAT_LOCKING = _gst_debug_category_new ("GST_LOCKING", 0, "locking");
445 GST_CAT_CONTEXT = _gst_debug_category_new ("GST_CONTEXT", 0, NULL);
446 _priv_GST_CAT_PROTECTION =
447 _gst_debug_category_new ("GST_PROTECTION", 0, "protection");
449 /* print out the valgrind message if we're in valgrind */
450 _priv_gst_in_valgrind ();
452 env = g_getenv ("GST_DEBUG_OPTIONS");
454 if (strstr (env, "full_tags") || strstr (env, "full-tags"))
456 else if (strstr (env, "pretty_tags") || strstr (env, "pretty-tags"))
460 if (g_getenv ("GST_DEBUG_NO_COLOR") != NULL)
461 gst_debug_set_color_mode (GST_DEBUG_COLOR_MODE_OFF);
462 env = g_getenv ("GST_DEBUG_COLOR_MODE");
464 gst_debug_set_color_mode_from_string (env);
466 _gst_debug_filter = g_getenv ("GST_DEBUG");
467 if (_gst_debug_filter) {
468 gst_debug_set_threshold_from_string (_gst_debug_filter, FALSE);
472 /* we can't do this further above, because we initialize the GST_CAT_DEFAULT struct */
473 #define GST_CAT_DEFAULT _GST_CAT_DEBUG
477 * @category: category to log
478 * @level: level of the message is in
479 * @file: the file that emitted the message, usually the __FILE__ identifier
480 * @function: the function that emitted the message
481 * @line: the line from that the message was emitted, usually __LINE__
482 * @object: (transfer none) (allow-none): the object this message relates to,
484 * @format: a printf style format string
485 * @...: optional arguments for the format
487 * Logs the given message using the currently registered debugging handlers.
490 gst_debug_log (GstDebugCategory * category, GstDebugLevel level,
491 const gchar * file, const gchar * function, gint line,
492 GObject * object, const gchar * format, ...)
496 va_start (var_args, format);
497 gst_debug_log_valist (category, level, file, function, line, object, format,
502 /* based on g_basename(), which we can't use because it was deprecated */
503 static inline const gchar *
504 gst_path_basename (const gchar * file_name)
506 register const gchar *base;
508 base = strrchr (file_name, G_DIR_SEPARATOR);
511 const gchar *q = strrchr (file_name, '/');
512 if (base == NULL || (q != NULL && q > base))
519 if (g_ascii_isalpha (file_name[0]) && file_name[1] == ':')
520 return file_name + 2;
526 * gst_debug_log_valist:
527 * @category: category to log
528 * @level: level of the message is in
529 * @file: the file that emitted the message, usually the __FILE__ identifier
530 * @function: the function that emitted the message
531 * @line: the line from that the message was emitted, usually __LINE__
532 * @object: (transfer none) (allow-none): the object this message relates to,
534 * @format: a printf style format string
535 * @args: optional arguments for the format
537 * Logs the given message using the currently registered debugging handlers.
540 gst_debug_log_valist (GstDebugCategory * category, GstDebugLevel level,
541 const gchar * file, const gchar * function, gint line,
542 GObject * object, const gchar * format, va_list args)
544 GstDebugMessage message;
548 g_return_if_fail (category != NULL);
550 if (level > gst_debug_category_get_threshold (category))
553 g_return_if_fail (file != NULL);
554 g_return_if_fail (function != NULL);
555 g_return_if_fail (format != NULL);
557 message.message = NULL;
558 message.format = format;
559 G_VA_COPY (message.arguments, args);
561 handler = __log_functions;
563 entry = handler->data;
564 handler = g_slist_next (handler);
565 entry->func (category, level, file, function, line, object, &message,
568 g_free (message.message);
569 va_end (message.arguments);
573 * gst_debug_message_get:
574 * @message: a debug message
576 * Gets the string representation of a #GstDebugMessage. This function is used
577 * in debug handlers to extract the message.
579 * Returns: the string representation of a #GstDebugMessage.
582 gst_debug_message_get (GstDebugMessage * message)
584 if (message->message == NULL) {
587 len = __gst_vasprintf (&message->message, message->format,
591 message->message = NULL;
593 return message->message;
596 #define MAX_BUFFER_DUMP_STRING_LEN 100
598 /* structure_to_pretty_string:
599 * @str: a serialized #GstStructure
601 * If the serialized structure contains large buffers such as images the hex
602 * representation of those buffers will be shortened so that the string remains
605 * Returns: the filtered string
608 prettify_structure_string (gchar * str)
610 gchar *pos = str, *end;
612 while ((pos = strstr (pos, "(buffer)"))) {
615 pos += strlen ("(buffer)");
616 for (end = pos; *end != '\0' && *end != ';' && *end != ' '; ++end)
618 if (count > MAX_BUFFER_DUMP_STRING_LEN) {
619 memcpy (pos + MAX_BUFFER_DUMP_STRING_LEN - 6, "..", 2);
620 memcpy (pos + MAX_BUFFER_DUMP_STRING_LEN - 4, pos + count - 4, 4);
621 memmove (pos + MAX_BUFFER_DUMP_STRING_LEN, pos + count,
622 strlen (pos + count) + 1);
623 pos += MAX_BUFFER_DUMP_STRING_LEN;
630 static inline gchar *
631 gst_info_structure_to_string (const GstStructure * s)
634 gchar *str = gst_structure_to_string (s);
635 if (G_UNLIKELY (pretty_tags && s->name == GST_QUARK (TAGLIST)))
636 return prettify_structure_string (str);
643 static inline gchar *
644 gst_info_describe_buffer (GstBuffer * buffer)
646 const gchar *offset_str = "none";
647 const gchar *offset_end_str = "none";
648 gchar offset_buf[32], offset_end_buf[32];
650 if (GST_BUFFER_OFFSET_IS_VALID (buffer)) {
651 g_snprintf (offset_buf, sizeof (offset_buf), "%" G_GUINT64_FORMAT,
652 GST_BUFFER_OFFSET (buffer));
653 offset_str = offset_buf;
655 if (GST_BUFFER_OFFSET_END_IS_VALID (buffer)) {
656 g_snprintf (offset_end_buf, sizeof (offset_end_buf), "%" G_GUINT64_FORMAT,
657 GST_BUFFER_OFFSET_END (buffer));
658 offset_end_str = offset_end_buf;
661 return g_strdup_printf ("buffer: %p, pts %" GST_TIME_FORMAT ", dts %"
662 GST_TIME_FORMAT ", dur %" GST_TIME_FORMAT ", size %" G_GSIZE_FORMAT
663 ", offset %s, offset_end %s, flags 0x%x", buffer,
664 GST_TIME_ARGS (GST_BUFFER_PTS (buffer)),
665 GST_TIME_ARGS (GST_BUFFER_DTS (buffer)),
666 GST_TIME_ARGS (GST_BUFFER_DURATION (buffer)),
667 gst_buffer_get_size (buffer), offset_str, offset_end_str,
668 GST_BUFFER_FLAGS (buffer));
671 static inline gchar *
672 gst_info_describe_buffer_list (GstBufferList * list)
674 GstClockTime pts = GST_CLOCK_TIME_NONE;
675 GstClockTime dts = GST_CLOCK_TIME_NONE;
676 gsize total_size = 0;
679 n = gst_buffer_list_length (list);
680 for (i = 0; i < n; ++i) {
681 GstBuffer *buf = gst_buffer_list_get (list, i);
684 pts = GST_BUFFER_PTS (buf);
685 dts = GST_BUFFER_DTS (buf);
688 total_size += gst_buffer_get_size (buf);
691 return g_strdup_printf ("bufferlist: %p, %u buffers, pts %" GST_TIME_FORMAT
692 ", dts %" GST_TIME_FORMAT ", size %" G_GSIZE_FORMAT, list, n,
693 GST_TIME_ARGS (pts), GST_TIME_ARGS (dts), total_size);
696 static inline gchar *
697 gst_info_describe_event (GstEvent * event)
701 s = gst_info_structure_to_string (gst_event_get_structure (event));
702 ret = g_strdup_printf ("%s event: %p, time %" GST_TIME_FORMAT
703 ", seq-num %d, %s", GST_EVENT_TYPE_NAME (event), event,
704 GST_TIME_ARGS (GST_EVENT_TIMESTAMP (event)), GST_EVENT_SEQNUM (event),
710 static inline gchar *
711 gst_info_describe_message (GstMessage * message)
715 s = gst_info_structure_to_string (gst_message_get_structure (message));
716 ret = g_strdup_printf ("%s message: %p, time %" GST_TIME_FORMAT
717 ", seq-num %d, element '%s', %s", GST_MESSAGE_TYPE_NAME (message),
718 message, GST_TIME_ARGS (GST_MESSAGE_TIMESTAMP (message)),
719 GST_MESSAGE_SEQNUM (message),
720 ((message->src) ? GST_ELEMENT_NAME (message->src) : "(NULL)"),
726 static inline gchar *
727 gst_info_describe_query (GstQuery * query)
731 s = gst_info_structure_to_string (gst_query_get_structure (query));
732 ret = g_strdup_printf ("%s query: %p, %s", GST_QUERY_TYPE_NAME (query),
733 query, (s ? s : "(NULL)"));
738 static inline gchar *
739 gst_info_describe_stream (GstStream * stream)
741 gchar *ret, *caps_str = NULL, *tags_str = NULL;
745 caps = gst_stream_get_caps (stream);
747 caps_str = gst_caps_to_string (caps);
748 gst_caps_unref (caps);
751 tags = gst_stream_get_tags (stream);
753 tags_str = gst_tag_list_to_string (tags);
754 gst_tag_list_unref (tags);
758 g_strdup_printf ("stream %s %p, ID %s, flags 0x%x, caps [%s], tags [%s]",
759 gst_stream_type_get_name (gst_stream_get_stream_type (stream)), stream,
760 gst_stream_get_stream_id (stream), gst_stream_get_stream_flags (stream),
761 caps_str ? caps_str : "", tags_str ? tags_str : "");
769 static inline gchar *
770 gst_info_describe_stream_collection (GstStreamCollection * collection)
773 GString *streams_str;
776 streams_str = g_string_new ("<");
777 for (i = 0; i < gst_stream_collection_get_size (collection); i++) {
778 GstStream *stream = gst_stream_collection_get_stream (collection, i);
781 s = gst_info_describe_stream (stream);
782 g_string_append_printf (streams_str, " %s,", s);
785 g_string_append (streams_str, " >");
787 ret = g_strdup_printf ("collection %p (%d streams) %s", collection,
788 gst_stream_collection_get_size (collection), streams_str->str);
790 g_string_free (streams_str, TRUE);
795 gst_debug_print_object (gpointer ptr)
797 GObject *object = (GObject *) ptr;
800 /* This is a cute trick to detect unmapped memory, but is unportable,
801 * slow, screws around with madvise, and not actually that useful. */
805 ret = madvise ((void *) ((unsigned long) ptr & (~0xfff)), 4096, 0);
806 if (ret == -1 && errno == ENOMEM) {
807 buffer = g_strdup_printf ("%p (unmapped memory)", ptr);
812 /* nicely printed object */
813 if (object == NULL) {
814 return g_strdup ("(NULL)");
816 if (GST_IS_CAPS (ptr)) {
817 return gst_caps_to_string ((const GstCaps *) ptr);
819 if (GST_IS_STRUCTURE (ptr)) {
820 return gst_info_structure_to_string ((const GstStructure *) ptr);
822 if (*(GType *) ptr == GST_TYPE_CAPS_FEATURES) {
823 return gst_caps_features_to_string ((const GstCapsFeatures *) ptr);
825 if (GST_IS_TAG_LIST (ptr)) {
826 gchar *str = gst_tag_list_to_string ((GstTagList *) ptr);
827 if (G_UNLIKELY (pretty_tags))
828 return prettify_structure_string (str);
832 if (*(GType *) ptr == GST_TYPE_DATE_TIME) {
833 return __gst_date_time_serialize ((GstDateTime *) ptr, TRUE);
835 if (GST_IS_BUFFER (ptr)) {
836 return gst_info_describe_buffer (GST_BUFFER_CAST (ptr));
838 if (GST_IS_BUFFER_LIST (ptr)) {
839 return gst_info_describe_buffer_list (GST_BUFFER_LIST_CAST (ptr));
842 if (*(guint32 *) ptr == 0xffffffff) {
843 return g_strdup_printf ("<poisoned@%p>", ptr);
846 if (GST_IS_MESSAGE (object)) {
847 return gst_info_describe_message (GST_MESSAGE_CAST (object));
849 if (GST_IS_QUERY (object)) {
850 return gst_info_describe_query (GST_QUERY_CAST (object));
852 if (GST_IS_EVENT (object)) {
853 return gst_info_describe_event (GST_EVENT_CAST (object));
855 if (GST_IS_CONTEXT (object)) {
856 GstContext *context = GST_CONTEXT_CAST (object);
859 const GstStructure *structure;
861 type = gst_context_get_context_type (context);
862 structure = gst_context_get_structure (context);
864 s = gst_info_structure_to_string (structure);
866 ret = g_strdup_printf ("context '%s'='%s'", type, s);
870 if (GST_IS_STREAM (object)) {
871 return gst_info_describe_stream (GST_STREAM_CAST (object));
873 if (GST_IS_STREAM_COLLECTION (object)) {
875 gst_info_describe_stream_collection (GST_STREAM_COLLECTION_CAST
878 if (GST_IS_PAD (object) && GST_OBJECT_NAME (object)) {
879 return g_strdup_printf ("<%s:%s>", GST_DEBUG_PAD_NAME (object));
881 if (GST_IS_OBJECT (object) && GST_OBJECT_NAME (object)) {
882 return g_strdup_printf ("<%s>", GST_OBJECT_NAME (object));
884 if (G_IS_OBJECT (object)) {
885 return g_strdup_printf ("<%s@%p>", G_OBJECT_TYPE_NAME (object), object);
888 return g_strdup_printf ("%p", ptr);
892 gst_debug_print_segment (gpointer ptr)
894 GstSegment *segment = (GstSegment *) ptr;
896 /* nicely printed segment */
897 if (segment == NULL) {
898 return g_strdup ("(NULL)");
901 switch (segment->format) {
902 case GST_FORMAT_UNDEFINED:{
903 return g_strdup_printf ("UNDEFINED segment");
905 case GST_FORMAT_TIME:{
906 return g_strdup_printf ("time segment start=%" GST_TIME_FORMAT
907 ", offset=%" GST_TIME_FORMAT ", stop=%" GST_TIME_FORMAT
908 ", rate=%f, applied_rate=%f" ", flags=0x%02x, time=%" GST_TIME_FORMAT
909 ", base=%" GST_TIME_FORMAT ", position %" GST_TIME_FORMAT
910 ", duration %" GST_TIME_FORMAT, GST_TIME_ARGS (segment->start),
911 GST_TIME_ARGS (segment->offset), GST_TIME_ARGS (segment->stop),
912 segment->rate, segment->applied_rate, (guint) segment->flags,
913 GST_TIME_ARGS (segment->time), GST_TIME_ARGS (segment->base),
914 GST_TIME_ARGS (segment->position), GST_TIME_ARGS (segment->duration));
917 const gchar *format_name;
919 format_name = gst_format_get_name (segment->format);
920 if (G_UNLIKELY (format_name == NULL))
921 format_name = "(UNKNOWN FORMAT)";
922 return g_strdup_printf ("%s segment start=%" G_GINT64_FORMAT
923 ", offset=%" G_GINT64_FORMAT ", stop=%" G_GINT64_FORMAT
924 ", rate=%f, applied_rate=%f" ", flags=0x%02x, time=%" G_GINT64_FORMAT
925 ", base=%" G_GINT64_FORMAT ", position %" G_GINT64_FORMAT
926 ", duration %" G_GINT64_FORMAT, format_name, segment->start,
927 segment->offset, segment->stop, segment->rate, segment->applied_rate,
928 (guint) segment->flags, segment->time, segment->base,
929 segment->position, segment->duration);
935 gst_info_printf_pointer_extension_func (const char *format, void *ptr)
939 if (format[0] == 'p' && format[1] == '\a') {
941 case 'A': /* GST_PTR_FORMAT */
942 s = gst_debug_print_object (ptr);
944 case 'B': /* GST_SEGMENT_FORMAT */
945 s = gst_debug_print_segment (ptr);
947 case 'a': /* GST_WRAPPED_PTR_FORMAT */
948 s = priv_gst_string_take_and_wrap (gst_debug_print_object (ptr));
951 /* must have been compiled against a newer version with an extension
952 * we don't known about yet - just ignore and fallback to %p below */
957 s = g_strdup_printf ("%p", ptr);
963 * gst_debug_construct_term_color:
964 * @colorinfo: the color info
966 * Constructs a string that can be used for getting the desired color in color
968 * You need to free the string after use.
970 * Returns: (transfer full) (type gchar*): a string containing the color
974 gst_debug_construct_term_color (guint colorinfo)
978 color = g_string_new ("\033[00");
980 if (colorinfo & GST_DEBUG_BOLD) {
981 g_string_append_len (color, ";01", 3);
983 if (colorinfo & GST_DEBUG_UNDERLINE) {
984 g_string_append_len (color, ";04", 3);
986 if (colorinfo & GST_DEBUG_FG_MASK) {
987 g_string_append_printf (color, ";3%1d", colorinfo & GST_DEBUG_FG_MASK);
989 if (colorinfo & GST_DEBUG_BG_MASK) {
990 g_string_append_printf (color, ";4%1d",
991 (colorinfo & GST_DEBUG_BG_MASK) >> 4);
993 g_string_append_c (color, 'm');
995 return g_string_free (color, FALSE);
999 * gst_debug_construct_win_color:
1000 * @colorinfo: the color info
1002 * Constructs an integer that can be used for getting the desired color in
1003 * windows' terminals (cmd.exe). As there is no mean to underline, we simply
1004 * ignore this attribute.
1006 * This function returns 0 on non-windows machines.
1008 * Returns: an integer containing the color definition
1011 gst_debug_construct_win_color (guint colorinfo)
1015 static const guchar ansi_to_win_fg[8] = {
1017 FOREGROUND_RED, /* red */
1018 FOREGROUND_GREEN, /* green */
1019 FOREGROUND_RED | FOREGROUND_GREEN, /* yellow */
1020 FOREGROUND_BLUE, /* blue */
1021 FOREGROUND_RED | FOREGROUND_BLUE, /* magenta */
1022 FOREGROUND_GREEN | FOREGROUND_BLUE, /* cyan */
1023 FOREGROUND_RED | FOREGROUND_GREEN | FOREGROUND_BLUE /* white */
1025 static const guchar ansi_to_win_bg[8] = {
1029 BACKGROUND_RED | BACKGROUND_GREEN,
1031 BACKGROUND_RED | BACKGROUND_BLUE,
1032 BACKGROUND_GREEN | FOREGROUND_BLUE,
1033 BACKGROUND_RED | BACKGROUND_GREEN | BACKGROUND_BLUE
1036 /* we draw black as white, as cmd.exe can only have black bg */
1037 if ((colorinfo & (GST_DEBUG_FG_MASK | GST_DEBUG_BG_MASK)) == 0) {
1038 color = ansi_to_win_fg[7];
1040 if (colorinfo & GST_DEBUG_UNDERLINE) {
1041 color |= BACKGROUND_INTENSITY;
1043 if (colorinfo & GST_DEBUG_BOLD) {
1044 color |= FOREGROUND_INTENSITY;
1046 if (colorinfo & GST_DEBUG_FG_MASK) {
1047 color |= ansi_to_win_fg[colorinfo & GST_DEBUG_FG_MASK];
1049 if (colorinfo & GST_DEBUG_BG_MASK) {
1050 color |= ansi_to_win_bg[(colorinfo & GST_DEBUG_BG_MASK) >> 4];
1056 /* width of %p varies depending on actual value of pointer, which can make
1057 * output unevenly aligned if multiple threads are involved, hence the %14p
1058 * (should really be %18p, but %14p seems a good compromise between too many
1059 * white spaces and likely unalignment on my system) */
1060 #if defined (GLIB_SIZEOF_VOID_P) && GLIB_SIZEOF_VOID_P == 8
1061 #define PTR_FMT "%14p"
1063 #define PTR_FMT "%10p"
1065 #define PID_FMT "%5d"
1066 #define CAT_FMT "%20s %s:%d:%s:%s"
1069 static const guchar levelcolormap_w32[GST_LEVEL_COUNT] = {
1070 /* GST_LEVEL_NONE */
1071 FOREGROUND_RED | FOREGROUND_GREEN | FOREGROUND_BLUE,
1072 /* GST_LEVEL_ERROR */
1073 FOREGROUND_RED | FOREGROUND_INTENSITY,
1074 /* GST_LEVEL_WARNING */
1075 FOREGROUND_RED | FOREGROUND_GREEN | FOREGROUND_INTENSITY,
1076 /* GST_LEVEL_INFO */
1077 FOREGROUND_GREEN | FOREGROUND_INTENSITY,
1078 /* GST_LEVEL_DEBUG */
1079 FOREGROUND_GREEN | FOREGROUND_BLUE,
1081 FOREGROUND_RED | FOREGROUND_GREEN | FOREGROUND_BLUE,
1082 /* GST_LEVEL_FIXME */
1083 FOREGROUND_RED | FOREGROUND_GREEN,
1084 /* GST_LEVEL_TRACE */
1085 FOREGROUND_RED | FOREGROUND_GREEN | FOREGROUND_BLUE,
1086 /* placeholder for log level 8 */
1088 /* GST_LEVEL_MEMDUMP */
1089 FOREGROUND_RED | FOREGROUND_GREEN | FOREGROUND_BLUE
1092 static const guchar available_colors[] = {
1093 FOREGROUND_RED, FOREGROUND_GREEN, FOREGROUND_RED | FOREGROUND_GREEN,
1094 FOREGROUND_BLUE, FOREGROUND_RED | FOREGROUND_BLUE,
1095 FOREGROUND_GREEN | FOREGROUND_BLUE,
1097 #endif /* G_OS_WIN32 */
1098 static const gchar *levelcolormap[GST_LEVEL_COUNT] = {
1099 "\033[37m", /* GST_LEVEL_NONE */
1100 "\033[31;01m", /* GST_LEVEL_ERROR */
1101 "\033[33;01m", /* GST_LEVEL_WARNING */
1102 "\033[32;01m", /* GST_LEVEL_INFO */
1103 "\033[36m", /* GST_LEVEL_DEBUG */
1104 "\033[37m", /* GST_LEVEL_LOG */
1105 "\033[33;01m", /* GST_LEVEL_FIXME */
1106 "\033[37m", /* GST_LEVEL_TRACE */
1107 "\033[37m", /* placeholder for log level 8 */
1108 "\033[37m" /* GST_LEVEL_MEMDUMP */
1112 * gst_debug_log_default:
1113 * @category: category to log
1114 * @level: level of the message
1115 * @file: the file that emitted the message, usually the __FILE__ identifier
1116 * @function: the function that emitted the message
1117 * @line: the line from that the message was emitted, usually __LINE__
1118 * @message: the actual message
1119 * @object: (transfer none) (allow-none): the object this message relates to,
1121 * @user_data: the FILE* to log to
1123 * The default logging handler used by GStreamer. Logging functions get called
1124 * whenever a macro like GST_DEBUG or similar is used. By default this function
1125 * is setup to output the message and additional info to stderr (or the log file
1126 * specified via the GST_DEBUG_FILE environment variable) as received via
1129 * You can add other handlers by using gst_debug_add_log_function().
1130 * And you can remove this handler by calling
1131 * gst_debug_remove_log_function(gst_debug_log_default);
1134 gst_debug_log_default (GstDebugCategory * category, GstDebugLevel level,
1135 const gchar * file, const gchar * function, gint line,
1136 GObject * object, GstDebugMessage * message, gpointer user_data)
1139 GstClockTime elapsed;
1141 GstDebugColorMode color_mode;
1142 FILE *log_file = user_data ? user_data : stderr;
1145 /* __FILE__ might be a file name or an absolute path or a
1146 * relative path, irrespective of the exact compiler used,
1147 * in which case we want to shorten it to the filename for
1150 if (c == '.' || c == '/' || c == '\\' || (c != '\0' && file[1] == ':')) {
1151 file = gst_path_basename (file);
1155 color_mode = gst_debug_get_color_mode ();
1158 obj = gst_debug_print_object (object);
1163 elapsed = GST_CLOCK_DIFF (_priv_gst_start_time, gst_util_get_timestamp ());
1165 if (color_mode != GST_DEBUG_COLOR_MODE_OFF) {
1167 /* We take a lock to keep colors and content together.
1168 * Maybe there is a better way but for now this will do the right
1170 static GMutex win_print_mutex;
1171 g_mutex_lock (&win_print_mutex);
1172 if (color_mode == GST_DEBUG_COLOR_MODE_UNIX) {
1174 /* colors, non-windows */
1175 gchar *color = NULL;
1178 const gchar *levelcolor;
1180 color = gst_debug_construct_term_color (gst_debug_category_get_color
1183 g_sprintf (pidcolor, "\033[3%1dm", pid % 6 + 31);
1184 levelcolor = levelcolormap[level];
1186 #define PRINT_FMT " %s"PID_FMT"%s "PTR_FMT" %s%s%s %s"CAT_FMT"%s %s\n"
1187 fprintf (log_file, "%" GST_TIME_FORMAT PRINT_FMT, GST_TIME_ARGS (elapsed),
1188 pidcolor, pid, clear, g_thread_self (), levelcolor,
1189 gst_debug_level_get_name (level), clear, color,
1190 gst_debug_category_get_name (category), file, line, function, obj,
1191 clear, gst_debug_message_get (message));
1197 /* colors, windows. */
1198 const gint clear = FOREGROUND_RED | FOREGROUND_GREEN | FOREGROUND_BLUE;
1199 #define SET_COLOR(c) G_STMT_START { \
1200 if (log_file == stderr) \
1201 SetConsoleTextAttribute (GetStdHandle (STD_ERROR_HANDLE), (c)); \
1204 fprintf (log_file, "%" GST_TIME_FORMAT " ", GST_TIME_ARGS (elapsed));
1207 SET_COLOR (available_colors[pid % G_N_ELEMENTS (available_colors)]);
1208 fprintf (log_file, PID_FMT, pid);
1212 fprintf (log_file, " " PTR_FMT " ", g_thread_self ());
1215 SET_COLOR (levelcolormap_w32[level]);
1216 fprintf (log_file, "%s ", gst_debug_level_get_name (level));
1219 SET_COLOR (gst_debug_construct_win_color (gst_debug_category_get_color
1221 fprintf (log_file, CAT_FMT, gst_debug_category_get_name (category),
1222 file, line, function, obj);
1226 fprintf (log_file, " %s\n", gst_debug_message_get (message));
1229 g_mutex_unlock (&win_print_mutex);
1232 /* no color, all platforms */
1233 #define PRINT_FMT " "PID_FMT" "PTR_FMT" %s "CAT_FMT" %s\n"
1234 fprintf (log_file, "%" GST_TIME_FORMAT PRINT_FMT, GST_TIME_ARGS (elapsed),
1235 pid, g_thread_self (), gst_debug_level_get_name (level),
1236 gst_debug_category_get_name (category), file, line, function, obj,
1237 gst_debug_message_get (message));
1247 * gst_debug_level_get_name:
1248 * @level: the level to get the name for
1250 * Get the string representation of a debugging level
1255 gst_debug_level_get_name (GstDebugLevel level)
1258 case GST_LEVEL_NONE:
1260 case GST_LEVEL_ERROR:
1262 case GST_LEVEL_WARNING:
1264 case GST_LEVEL_INFO:
1266 case GST_LEVEL_DEBUG:
1270 case GST_LEVEL_FIXME:
1272 case GST_LEVEL_TRACE:
1274 case GST_LEVEL_MEMDUMP:
1277 g_warning ("invalid level specified for gst_debug_level_get_name");
1283 * gst_debug_add_log_function:
1284 * @func: the function to use
1285 * @user_data: user data
1286 * @notify: called when @user_data is not used anymore
1288 * Adds the logging function to the list of logging functions.
1289 * Be sure to use #G_GNUC_NO_INSTRUMENT on that function, it is needed.
1292 gst_debug_add_log_function (GstLogFunction func, gpointer user_data,
1293 GDestroyNotify notify)
1295 LogFuncEntry *entry;
1299 func = gst_debug_log_default;
1301 entry = g_slice_new (LogFuncEntry);
1303 entry->user_data = user_data;
1304 entry->notify = notify;
1305 /* FIXME: we leak the old list here - other threads might access it right now
1306 * in gst_debug_logv. Another solution is to lock the mutex in gst_debug_logv,
1307 * but that is waaay costly.
1308 * It'd probably be clever to use some kind of RCU here, but I don't know
1309 * anything about that.
1311 g_mutex_lock (&__log_func_mutex);
1312 list = g_slist_copy (__log_functions);
1313 __log_functions = g_slist_prepend (list, entry);
1314 g_mutex_unlock (&__log_func_mutex);
1316 if (gst_is_initialized ())
1317 GST_DEBUG ("prepended log function %p (user data %p) to log functions",
1322 gst_debug_compare_log_function_by_func (gconstpointer entry, gconstpointer func)
1324 gpointer entryfunc = (gpointer) (((LogFuncEntry *) entry)->func);
1326 return (entryfunc < func) ? -1 : (entryfunc > func) ? 1 : 0;
1330 gst_debug_compare_log_function_by_data (gconstpointer entry, gconstpointer data)
1332 gpointer entrydata = ((LogFuncEntry *) entry)->user_data;
1334 return (entrydata < data) ? -1 : (entrydata > data) ? 1 : 0;
1338 gst_debug_remove_with_compare_func (GCompareFunc func, gpointer data)
1341 GSList *new, *cleanup = NULL;
1344 g_mutex_lock (&__log_func_mutex);
1345 new = __log_functions;
1347 while ((found = g_slist_find_custom (new, data, func))) {
1348 if (new == __log_functions) {
1349 /* make a copy when we have the first hit, so that we modify the copy and
1350 * make that the new list later */
1351 new = g_slist_copy (new);
1354 cleanup = g_slist_prepend (cleanup, found->data);
1355 new = g_slist_delete_link (new, found);
1358 /* FIXME: We leak the old list here. See _add_log_function for why. */
1359 __log_functions = new;
1360 g_mutex_unlock (&__log_func_mutex);
1363 LogFuncEntry *entry = cleanup->data;
1366 entry->notify (entry->user_data);
1368 g_slice_free (LogFuncEntry, entry);
1369 cleanup = g_slist_delete_link (cleanup, cleanup);
1375 * gst_debug_remove_log_function:
1376 * @func: (scope call) (allow-none): the log function to remove, or %NULL to
1377 * remove the default log function
1379 * Removes all registered instances of the given logging functions.
1381 * Returns: How many instances of the function were removed
1384 gst_debug_remove_log_function (GstLogFunction func)
1389 func = gst_debug_log_default;
1392 gst_debug_remove_with_compare_func
1393 (gst_debug_compare_log_function_by_func, (gpointer) func);
1395 if (gst_is_initialized ()) {
1396 GST_DEBUG ("removed log function %p %d times from log function list", func,
1399 /* If the default log function is removed before gst_init() was called,
1400 * set a flag so we don't add it in gst_init() later */
1401 if (func == gst_debug_log_default) {
1402 add_default_log_func = FALSE;
1411 * gst_debug_remove_log_function_by_data:
1412 * @data: user data of the log function to remove
1414 * Removes all registered instances of log functions with the given user data.
1416 * Returns: How many instances of the function were removed
1419 gst_debug_remove_log_function_by_data (gpointer data)
1424 gst_debug_remove_with_compare_func
1425 (gst_debug_compare_log_function_by_data, data);
1427 if (gst_is_initialized ())
1429 ("removed %d log functions with user data %p from log function list",
1436 * gst_debug_set_colored:
1437 * @colored: Whether to use colored output or not
1439 * Sets or unsets the use of coloured debugging output.
1440 * Same as gst_debug_set_color_mode () with the argument being
1441 * being GST_DEBUG_COLOR_MODE_ON or GST_DEBUG_COLOR_MODE_OFF.
1443 * This function may be called before gst_init().
1446 gst_debug_set_colored (gboolean colored)
1448 GstDebugColorMode new_mode;
1449 new_mode = colored ? GST_DEBUG_COLOR_MODE_ON : GST_DEBUG_COLOR_MODE_OFF;
1450 g_atomic_int_set (&__use_color, (gint) new_mode);
1454 * gst_debug_set_color_mode:
1455 * @mode: The coloring mode for debug output. See @GstDebugColorMode.
1457 * Changes the coloring mode for debug output.
1459 * This function may be called before gst_init().
1464 gst_debug_set_color_mode (GstDebugColorMode mode)
1466 g_atomic_int_set (&__use_color, mode);
1470 * gst_debug_set_color_mode_from_string:
1471 * @mode: The coloring mode for debug output. One of the following:
1472 * "on", "auto", "off", "disable", "unix".
1474 * Changes the coloring mode for debug output.
1476 * This function may be called before gst_init().
1481 gst_debug_set_color_mode_from_string (const gchar * mode)
1483 if ((strcmp (mode, "on") == 0) || (strcmp (mode, "auto") == 0))
1484 gst_debug_set_color_mode (GST_DEBUG_COLOR_MODE_ON);
1485 else if ((strcmp (mode, "off") == 0) || (strcmp (mode, "disable") == 0))
1486 gst_debug_set_color_mode (GST_DEBUG_COLOR_MODE_OFF);
1487 else if (strcmp (mode, "unix") == 0)
1488 gst_debug_set_color_mode (GST_DEBUG_COLOR_MODE_UNIX);
1492 * gst_debug_is_colored:
1494 * Checks if the debugging output should be colored.
1496 * Returns: %TRUE, if the debug output should be colored.
1499 gst_debug_is_colored (void)
1501 GstDebugColorMode mode = g_atomic_int_get (&__use_color);
1502 return (mode == GST_DEBUG_COLOR_MODE_UNIX || mode == GST_DEBUG_COLOR_MODE_ON);
1506 * gst_debug_get_color_mode:
1508 * Changes the coloring mode for debug output.
1510 * Returns: see @GstDebugColorMode for possible values.
1515 gst_debug_get_color_mode (void)
1517 return g_atomic_int_get (&__use_color);
1521 * gst_debug_set_active:
1522 * @active: Whether to use debugging output or not
1524 * If activated, debugging messages are sent to the debugging
1526 * It makes sense to deactivate it for speed issues.
1527 * <note><para>This function is not threadsafe. It makes sense to only call it
1528 * during initialization.</para></note>
1531 gst_debug_set_active (gboolean active)
1533 _gst_debug_enabled = active;
1535 _gst_debug_min = GST_LEVEL_COUNT;
1537 _gst_debug_min = GST_LEVEL_NONE;
1541 * gst_debug_is_active:
1543 * Checks if debugging output is activated.
1545 * Returns: %TRUE, if debugging is activated
1548 gst_debug_is_active (void)
1550 return _gst_debug_enabled;
1554 * gst_debug_set_default_threshold:
1555 * @level: level to set
1557 * Sets the default threshold to the given level and updates all categories to
1558 * use this threshold.
1560 * This function may be called before gst_init().
1563 gst_debug_set_default_threshold (GstDebugLevel level)
1565 g_atomic_int_set (&__default_level, level);
1566 gst_debug_reset_all_thresholds ();
1570 * gst_debug_get_default_threshold:
1572 * Returns the default threshold that is used for new categories.
1574 * Returns: the default threshold level
1577 gst_debug_get_default_threshold (void)
1579 return (GstDebugLevel) g_atomic_int_get (&__default_level);
1583 gst_debug_reset_threshold (gpointer category, gpointer unused)
1585 GstDebugCategory *cat = (GstDebugCategory *) category;
1588 g_mutex_lock (&__level_name_mutex);
1589 walk = __level_name;
1591 LevelNameEntry *entry = walk->data;
1593 walk = g_slist_next (walk);
1594 if (g_pattern_match_string (entry->pat, cat->name)) {
1595 if (gst_is_initialized ())
1596 GST_LOG ("category %s matches pattern %p - gets set to level %d",
1597 cat->name, entry->pat, entry->level);
1598 gst_debug_category_set_threshold (cat, entry->level);
1602 gst_debug_category_set_threshold (cat, gst_debug_get_default_threshold ());
1605 g_mutex_unlock (&__level_name_mutex);
1609 gst_debug_reset_all_thresholds (void)
1611 g_mutex_lock (&__cat_mutex);
1612 g_slist_foreach (__categories, gst_debug_reset_threshold, NULL);
1613 g_mutex_unlock (&__cat_mutex);
1617 for_each_threshold_by_entry (gpointer data, gpointer user_data)
1619 GstDebugCategory *cat = (GstDebugCategory *) data;
1620 LevelNameEntry *entry = (LevelNameEntry *) user_data;
1622 if (g_pattern_match_string (entry->pat, cat->name)) {
1623 if (gst_is_initialized ())
1624 GST_LOG ("category %s matches pattern %p - gets set to level %d",
1625 cat->name, entry->pat, entry->level);
1626 gst_debug_category_set_threshold (cat, entry->level);
1631 * gst_debug_set_threshold_for_name:
1632 * @name: name of the categories to set
1633 * @level: level to set them to
1635 * Sets all categories which match the given glob style pattern to the given
1639 gst_debug_set_threshold_for_name (const gchar * name, GstDebugLevel level)
1642 LevelNameEntry *entry;
1644 g_return_if_fail (name != NULL);
1646 pat = g_pattern_spec_new (name);
1647 entry = g_slice_new (LevelNameEntry);
1649 entry->level = level;
1650 g_mutex_lock (&__level_name_mutex);
1651 __level_name = g_slist_prepend (__level_name, entry);
1652 g_mutex_unlock (&__level_name_mutex);
1653 g_mutex_lock (&__cat_mutex);
1654 g_slist_foreach (__categories, for_each_threshold_by_entry, entry);
1655 g_mutex_unlock (&__cat_mutex);
1659 * gst_debug_unset_threshold_for_name:
1660 * @name: name of the categories to set
1662 * Resets all categories with the given name back to the default level.
1665 gst_debug_unset_threshold_for_name (const gchar * name)
1670 g_return_if_fail (name != NULL);
1672 pat = g_pattern_spec_new (name);
1673 g_mutex_lock (&__level_name_mutex);
1674 walk = __level_name;
1675 /* improve this if you want, it's mighty slow */
1677 LevelNameEntry *entry = walk->data;
1679 if (g_pattern_spec_equal (entry->pat, pat)) {
1680 __level_name = g_slist_remove_link (__level_name, walk);
1681 g_pattern_spec_free (entry->pat);
1682 g_slice_free (LevelNameEntry, entry);
1683 g_slist_free_1 (walk);
1684 walk = __level_name;
1686 walk = g_slist_next (walk);
1689 g_mutex_unlock (&__level_name_mutex);
1690 g_pattern_spec_free (pat);
1691 gst_debug_reset_all_thresholds ();
1695 _gst_debug_category_new (const gchar * name, guint color,
1696 const gchar * description)
1698 GstDebugCategory *cat, *catfound;
1700 g_return_val_if_fail (name != NULL, NULL);
1702 cat = g_slice_new (GstDebugCategory);
1703 cat->name = g_strdup (name);
1705 if (description != NULL) {
1706 cat->description = g_strdup (description);
1708 cat->description = g_strdup ("no description");
1710 g_atomic_int_set (&cat->threshold, 0);
1711 gst_debug_reset_threshold (cat, NULL);
1713 /* add to category list */
1714 g_mutex_lock (&__cat_mutex);
1715 catfound = _gst_debug_get_category_locked (name);
1717 g_free ((gpointer) cat->name);
1718 g_free ((gpointer) cat->description);
1719 g_slice_free (GstDebugCategory, cat);
1722 __categories = g_slist_prepend (__categories, cat);
1724 g_mutex_unlock (&__cat_mutex);
1726 /* ensure the filter is applied to categories registered after _debug_init */
1727 if (_gst_debug_filter) {
1728 gst_debug_set_threshold_from_string (_gst_debug_filter, FALSE);
1735 * gst_debug_category_free:
1736 * @category: #GstDebugCategory to free.
1738 * Removes and frees the category and all associated resources.
1741 gst_debug_category_free (GstDebugCategory * category)
1743 if (category == NULL)
1746 /* remove from category list */
1747 g_mutex_lock (&__cat_mutex);
1748 __categories = g_slist_remove (__categories, category);
1749 g_mutex_unlock (&__cat_mutex);
1751 g_free ((gpointer) category->name);
1752 g_free ((gpointer) category->description);
1753 g_slice_free (GstDebugCategory, category);
1757 * gst_debug_category_set_threshold:
1758 * @category: a #GstDebugCategory to set threshold of.
1759 * @level: the #GstDebugLevel threshold to set.
1761 * Sets the threshold of the category to the given level. Debug information will
1762 * only be output if the threshold is lower or equal to the level of the
1763 * debugging message.
1765 * Do not use this function in production code, because other functions may
1766 * change the threshold of categories as side effect. It is however a nice
1767 * function to use when debugging (even from gdb).
1771 gst_debug_category_set_threshold (GstDebugCategory * category,
1772 GstDebugLevel level)
1774 g_return_if_fail (category != NULL);
1776 if (level > _gst_debug_min) {
1777 _gst_debug_enabled = TRUE;
1778 _gst_debug_min = level;
1781 g_atomic_int_set (&category->threshold, level);
1785 * gst_debug_category_reset_threshold:
1786 * @category: a #GstDebugCategory to reset threshold of.
1788 * Resets the threshold of the category to the default level. Debug information
1789 * will only be output if the threshold is lower or equal to the level of the
1790 * debugging message.
1791 * Use this function to set the threshold back to where it was after using
1792 * gst_debug_category_set_threshold().
1795 gst_debug_category_reset_threshold (GstDebugCategory * category)
1797 gst_debug_reset_threshold (category, NULL);
1801 * gst_debug_category_get_threshold:
1802 * @category: a #GstDebugCategory to get threshold of.
1804 * Returns the threshold of a #GstDebugCategory.
1806 * Returns: the #GstDebugLevel that is used as threshold.
1809 gst_debug_category_get_threshold (GstDebugCategory * category)
1811 return (GstDebugLevel) g_atomic_int_get (&category->threshold);
1815 * gst_debug_category_get_name:
1816 * @category: a #GstDebugCategory to get name of.
1818 * Returns the name of a debug category.
1820 * Returns: the name of the category.
1823 gst_debug_category_get_name (GstDebugCategory * category)
1825 return category->name;
1829 * gst_debug_category_get_color:
1830 * @category: a #GstDebugCategory to get the color of.
1832 * Returns the color of a debug category used when printing output in this
1835 * Returns: the color of the category.
1838 gst_debug_category_get_color (GstDebugCategory * category)
1840 return category->color;
1844 * gst_debug_category_get_description:
1845 * @category: a #GstDebugCategory to get the description of.
1847 * Returns the description of a debug category.
1849 * Returns: the description of the category.
1852 gst_debug_category_get_description (GstDebugCategory * category)
1854 return category->description;
1858 * gst_debug_get_all_categories:
1860 * Returns a snapshot of a all categories that are currently in use . This list
1861 * may change anytime.
1862 * The caller has to free the list after use.
1864 * Returns: (transfer container) (element-type Gst.DebugCategory): the list of
1868 gst_debug_get_all_categories (void)
1872 g_mutex_lock (&__cat_mutex);
1873 ret = g_slist_copy (__categories);
1874 g_mutex_unlock (&__cat_mutex);
1879 static GstDebugCategory *
1880 _gst_debug_get_category_locked (const gchar * name)
1882 GstDebugCategory *ret = NULL;
1885 for (node = __categories; node; node = g_slist_next (node)) {
1886 ret = (GstDebugCategory *) node->data;
1887 if (!strcmp (name, ret->name)) {
1895 _gst_debug_get_category (const gchar * name)
1897 GstDebugCategory *ret;
1899 g_mutex_lock (&__cat_mutex);
1900 ret = _gst_debug_get_category_locked (name);
1901 g_mutex_unlock (&__cat_mutex);
1907 parse_debug_category (gchar * str, const gchar ** category)
1912 /* works in place */
1915 if (str[0] != '\0') {
1924 parse_debug_level (gchar * str, GstDebugLevel * level)
1929 /* works in place */
1932 if (g_ascii_isdigit (str[0])) {
1935 l = strtoul (str, &endptr, 10);
1936 if (endptr > str && endptr[0] == 0) {
1937 *level = (GstDebugLevel) l;
1941 } else if (strcmp (str, "ERROR") == 0) {
1942 *level = GST_LEVEL_ERROR;
1943 } else if (strncmp (str, "WARN", 4) == 0) {
1944 *level = GST_LEVEL_WARNING;
1945 } else if (strcmp (str, "FIXME") == 0) {
1946 *level = GST_LEVEL_FIXME;
1947 } else if (strcmp (str, "INFO") == 0) {
1948 *level = GST_LEVEL_INFO;
1949 } else if (strcmp (str, "DEBUG") == 0) {
1950 *level = GST_LEVEL_DEBUG;
1951 } else if (strcmp (str, "LOG") == 0) {
1952 *level = GST_LEVEL_LOG;
1953 } else if (strcmp (str, "TRACE") == 0) {
1954 *level = GST_LEVEL_TRACE;
1955 } else if (strcmp (str, "MEMDUMP") == 0) {
1956 *level = GST_LEVEL_MEMDUMP;
1964 * gst_debug_set_threshold_from_string:
1965 * @list: comma-separated list of "category:level" pairs to be used
1966 * as debug logging levels
1967 * @reset: %TRUE to clear all previously-set debug levels before setting
1969 * %FALSE if adding the threshold described by @list to the one already set.
1971 * Sets the debug logging wanted in the same form as with the GST_DEBUG
1972 * environment variable. You can use wildcards such as '*', but note that
1973 * the order matters when you use wild cards, e.g. "foosrc:6,*src:3,*:2" sets
1974 * everything to log level 2.
1979 gst_debug_set_threshold_from_string (const gchar * list, gboolean reset)
1987 gst_debug_set_default_threshold (0);
1989 split = g_strsplit (list, ",", 0);
1991 for (walk = split; *walk; walk++) {
1992 if (strchr (*walk, ':')) {
1993 gchar **values = g_strsplit (*walk, ":", 2);
1995 if (values[0] && values[1]) {
1996 GstDebugLevel level;
1997 const gchar *category;
1999 if (parse_debug_category (values[0], &category)
2000 && parse_debug_level (values[1], &level)) {
2001 gst_debug_set_threshold_for_name (category, level);
2003 /* bump min-level anyway to allow the category to be registered in the
2005 if (level > _gst_debug_min) {
2006 _gst_debug_min = level;
2011 g_strfreev (values);
2013 GstDebugLevel level;
2015 if (parse_debug_level (*walk, &level))
2016 gst_debug_set_default_threshold (level);
2023 /*** FUNCTION POINTERS ********************************************************/
2025 static GHashTable *__gst_function_pointers; /* NULL */
2026 static GMutex __dbg_functions_mutex;
2028 /* This function MUST NOT return NULL */
2030 _gst_debug_nameof_funcptr (GstDebugFuncPtr func)
2038 if (G_UNLIKELY (func == NULL))
2041 g_mutex_lock (&__dbg_functions_mutex);
2042 if (G_LIKELY (__gst_function_pointers)) {
2043 ptrname = g_hash_table_lookup (__gst_function_pointers, (gpointer) func);
2044 g_mutex_unlock (&__dbg_functions_mutex);
2045 if (G_LIKELY (ptrname))
2048 g_mutex_unlock (&__dbg_functions_mutex);
2050 /* we need to create an entry in the hash table for this one so we don't leak
2053 if (dladdr ((gpointer) func, &dl_info) && dl_info.dli_sname) {
2054 gchar *name = g_strdup (dl_info.dli_sname);
2056 _gst_debug_register_funcptr (func, name);
2061 gchar *name = g_strdup_printf ("%p", (gpointer) func);
2063 _gst_debug_register_funcptr (func, name);
2069 _gst_debug_register_funcptr (GstDebugFuncPtr func, const gchar * ptrname)
2071 gpointer ptr = (gpointer) func;
2073 g_mutex_lock (&__dbg_functions_mutex);
2075 if (!__gst_function_pointers)
2076 __gst_function_pointers = g_hash_table_new (g_direct_hash, g_direct_equal);
2077 if (!g_hash_table_lookup (__gst_function_pointers, ptr))
2078 g_hash_table_insert (__gst_function_pointers, ptr, (gpointer) ptrname);
2080 g_mutex_unlock (&__dbg_functions_mutex);
2084 gst_info_dump_mem_line (gchar * linebuf, gsize linebuf_size,
2085 const guint8 * mem, gsize mem_offset, gsize mem_size)
2087 gchar hexstr[50], ascstr[18], digitstr[4];
2099 while (i < mem_size) {
2100 ascstr[i] = (g_ascii_isprint (mem[i])) ? mem[i] : '.';
2101 g_snprintf (digitstr, sizeof (digitstr), "%02x ", mem[i]);
2102 g_strlcat (hexstr, digitstr, sizeof (hexstr));
2108 g_snprintf (linebuf, linebuf_size, "%08x: %-48.48s %-16.16s",
2109 (guint) mem_offset, hexstr, ascstr);
2113 _gst_debug_dump_mem (GstDebugCategory * cat, const gchar * file,
2114 const gchar * func, gint line, GObject * obj, const gchar * msg,
2115 const guint8 * data, guint length)
2119 gst_debug_log ((cat), GST_LEVEL_MEMDUMP, file, func, line, obj, "--------"
2120 "-------------------------------------------------------------------");
2122 if (msg != NULL && *msg != '\0') {
2123 gst_debug_log ((cat), GST_LEVEL_MEMDUMP, file, func, line, obj, "%s", msg);
2126 while (off < length) {
2129 /* gst_info_dump_mem_line will process 16 bytes at most */
2130 gst_info_dump_mem_line (buf, sizeof (buf), data, off, length - off);
2131 gst_debug_log (cat, GST_LEVEL_MEMDUMP, file, func, line, obj, "%s", buf);
2135 gst_debug_log ((cat), GST_LEVEL_MEMDUMP, file, func, line, obj, "--------"
2136 "-------------------------------------------------------------------");
2139 #else /* !GST_DISABLE_GST_DEBUG */
2140 #ifndef GST_REMOVE_DISABLED
2143 _gst_debug_category_new (const gchar * name, guint color,
2144 const gchar * description)
2150 _gst_debug_register_funcptr (GstDebugFuncPtr func, const gchar * ptrname)
2154 /* This function MUST NOT return NULL */
2156 _gst_debug_nameof_funcptr (GstDebugFuncPtr func)
2162 gst_debug_log (GstDebugCategory * category, GstDebugLevel level,
2163 const gchar * file, const gchar * function, gint line,
2164 GObject * object, const gchar * format, ...)
2169 gst_debug_log_valist (GstDebugCategory * category, GstDebugLevel level,
2170 const gchar * file, const gchar * function, gint line,
2171 GObject * object, const gchar * format, va_list args)
2176 gst_debug_message_get (GstDebugMessage * message)
2182 gst_debug_log_default (GstDebugCategory * category, GstDebugLevel level,
2183 const gchar * file, const gchar * function, gint line,
2184 GObject * object, GstDebugMessage * message, gpointer unused)
2189 gst_debug_level_get_name (GstDebugLevel level)
2195 gst_debug_add_log_function (GstLogFunction func, gpointer user_data,
2196 GDestroyNotify notify)
2201 gst_debug_remove_log_function (GstLogFunction func)
2207 gst_debug_remove_log_function_by_data (gpointer data)
2213 gst_debug_set_active (gboolean active)
2218 gst_debug_is_active (void)
2224 gst_debug_set_colored (gboolean colored)
2229 gst_debug_set_color_mode (GstDebugColorMode mode)
2234 gst_debug_set_color_mode_from_string (const gchar * str)
2239 gst_debug_is_colored (void)
2245 gst_debug_get_color_mode (void)
2247 return GST_DEBUG_COLOR_MODE_OFF;
2251 gst_debug_set_threshold_from_string (const gchar * list, gboolean reset)
2256 gst_debug_set_default_threshold (GstDebugLevel level)
2261 gst_debug_get_default_threshold (void)
2263 return GST_LEVEL_NONE;
2267 gst_debug_set_threshold_for_name (const gchar * name, GstDebugLevel level)
2272 gst_debug_unset_threshold_for_name (const gchar * name)
2277 gst_debug_category_free (GstDebugCategory * category)
2282 gst_debug_category_set_threshold (GstDebugCategory * category,
2283 GstDebugLevel level)
2288 gst_debug_category_reset_threshold (GstDebugCategory * category)
2293 gst_debug_category_get_threshold (GstDebugCategory * category)
2295 return GST_LEVEL_NONE;
2299 gst_debug_category_get_name (GstDebugCategory * category)
2305 gst_debug_category_get_color (GstDebugCategory * category)
2311 gst_debug_category_get_description (GstDebugCategory * category)
2317 gst_debug_get_all_categories (void)
2323 _gst_debug_get_category (const gchar * name)
2329 gst_debug_construct_term_color (guint colorinfo)
2331 return g_strdup ("00");
2335 gst_debug_construct_win_color (guint colorinfo)
2341 _priv_gst_in_valgrind (void)
2347 _gst_debug_dump_mem (GstDebugCategory * cat, const gchar * file,
2348 const gchar * func, gint line, GObject * obj, const gchar * msg,
2349 const guint8 * data, guint length)
2352 #endif /* GST_REMOVE_DISABLED */
2353 #endif /* GST_DISABLE_GST_DEBUG */
2355 /* Need this for _gst_element_error_printf even if GST_REMOVE_DISABLED is set:
2356 * fallback function that cleans up the format string and replaces all pointer
2357 * extension formats with plain %p. */
2358 #ifdef GST_DISABLE_GST_DEBUG
2360 __gst_info_fallback_vasprintf (char **result, char const *format, va_list args)
2362 gchar *clean_format, *c;
2368 clean_format = g_strdup (format);
2370 while ((c = strstr (c, "%p\a"))) {
2371 if (c[3] < 'A' || c[3] > 'Z') {
2375 len = strlen (c + 4);
2376 memmove (c + 2, c + 4, len + 1);
2379 while ((c = strstr (clean_format, "%P"))) /* old GST_PTR_FORMAT */
2381 while ((c = strstr (clean_format, "%Q"))) /* old GST_SEGMENT_FORMAT */
2384 len = g_vasprintf (result, clean_format, args);
2386 g_free (clean_format);
2388 if (*result == NULL)
2396 * gst_info_vasprintf:
2397 * @result: (out): the resulting string
2398 * @format: a printf style format string
2399 * @args: the va_list of printf arguments for @format
2401 * Allocates and fills a string large enough (including the terminating null
2402 * byte) to hold the specified printf style @format and @args.
2404 * This function deals with the GStreamer specific printf specifiers
2405 * #GST_PTR_FORMAT and #GST_SEGMENT_FORMAT. If you do not have these specifiers
2406 * in your @format string, you do not need to use this function and can use
2407 * alternatives such as g_vasprintf().
2409 * Free @result with g_free().
2411 * Returns: the length of the string allocated into @result or -1 on any error
2416 gst_info_vasprintf (gchar ** result, const gchar * format, va_list args)
2418 /* This will fallback to __gst_info_fallback_vasprintf() via a #define in
2419 * gst_private.h if the debug system is disabled which will remove the gst
2420 * specific printf format specifiers */
2421 return __gst_vasprintf (result, format, args);
2425 * gst_info_strdup_vprintf:
2426 * @format: a printf style format string
2427 * @args: the va_list of printf arguments for @format
2429 * Allocates, fills and returns a null terminated string from the printf style
2430 * @format string and @args.
2432 * See gst_info_vasprintf() for when this function is required.
2434 * Free with g_free().
2436 * Returns: a newly allocated null terminated string or %NULL on any error
2441 gst_info_strdup_vprintf (const gchar * format, va_list args)
2445 if (gst_info_vasprintf (&ret, format, args) < 0)
2452 * gst_info_strdup_printf:
2453 * @format: a printf style format string
2454 * @...: the printf arguments for @format
2456 * Allocates, fills and returns a 0-terminated string from the printf style
2457 * @format string and corresponding arguments.
2459 * See gst_info_vasprintf() for when this function is required.
2461 * Free with g_free().
2463 * Returns: a newly allocated null terminated string or %NULL on any error
2468 gst_info_strdup_printf (const gchar * format, ...)
2473 va_start (args, format);
2474 ret = gst_info_strdup_vprintf (format, args);
2482 * @format: a printf style format string
2483 * @...: the printf arguments for @format
2485 * Outputs a formatted message via the GLib print handler. The default print
2486 * handler simply outputs the message to stdout.
2488 * This function will not append a new-line character at the end, unlike
2489 * gst_println() which will.
2491 * All strings must be in ASCII or UTF-8 encoding.
2493 * This function differs from g_print() in that it supports all the additional
2494 * printf specifiers that are supported by GStreamer's debug logging system,
2495 * such as #GST_PTR_FORMAT and #GST_SEGMENT_FORMAT.
2497 * This function is primarily for printing debug output.
2502 gst_print (const gchar * format, ...)
2507 va_start (args, format);
2508 str = gst_info_strdup_vprintf (format, args);
2511 g_print ("%s", str);
2517 * @format: a printf style format string
2518 * @...: the printf arguments for @format
2520 * Outputs a formatted message via the GLib print handler. The default print
2521 * handler simply outputs the message to stdout.
2523 * This function will append a new-line character at the end, unlike
2524 * gst_print() which will not.
2526 * All strings must be in ASCII or UTF-8 encoding.
2528 * This function differs from g_print() in that it supports all the additional
2529 * printf specifiers that are supported by GStreamer's debug logging system,
2530 * such as #GST_PTR_FORMAT and #GST_SEGMENT_FORMAT.
2532 * This function is primarily for printing debug output.
2537 gst_println (const gchar * format, ...)
2542 va_start (args, format);
2543 str = gst_info_strdup_vprintf (format, args);
2546 g_print ("%s\n", str);
2552 * @format: a printf style format string
2553 * @...: the printf arguments for @format
2555 * Outputs a formatted message via the GLib error message handler. The default
2556 * handler simply outputs the message to stderr.
2558 * This function will not append a new-line character at the end, unlike
2559 * gst_printerrln() which will.
2561 * All strings must be in ASCII or UTF-8 encoding.
2563 * This function differs from g_printerr() in that it supports the additional
2564 * printf specifiers that are supported by GStreamer's debug logging system,
2565 * such as #GST_PTR_FORMAT and #GST_SEGMENT_FORMAT.
2567 * This function is primarily for printing debug output.
2572 gst_printerr (const gchar * format, ...)
2577 va_start (args, format);
2578 str = gst_info_strdup_vprintf (format, args);
2581 g_printerr ("%s", str);
2587 * @format: a printf style format string
2588 * @...: the printf arguments for @format
2590 * Outputs a formatted message via the GLib error message handler. The default
2591 * handler simply outputs the message to stderr.
2593 * This function will append a new-line character at the end, unlike
2594 * gst_printerr() which will not.
2596 * All strings must be in ASCII or UTF-8 encoding.
2598 * This function differs from g_printerr() in that it supports the additional
2599 * printf specifiers that are supported by GStreamer's debug logging system,
2600 * such as #GST_PTR_FORMAT and #GST_SEGMENT_FORMAT.
2602 * This function is primarily for printing debug output.
2607 gst_printerrln (const gchar * format, ...)
2612 va_start (args, format);
2613 str = gst_info_strdup_vprintf (format, args);
2616 g_printerr ("%s\n", str);
2623 append_debug_info (GString * trace, Dwfl * dwfl, const void *ip)
2627 Dwfl_Module *module;
2628 const gchar *function_name;
2630 if (dwfl_linux_proc_report (dwfl, getpid ()) != 0)
2633 if (dwfl_report_end (dwfl, NULL, NULL))
2636 addr = (uintptr_t) ip;
2637 module = dwfl_addrmodule (dwfl, addr);
2638 function_name = dwfl_module_addrname (module, addr);
2640 g_string_append_printf (trace, "%s (", function_name ? function_name : "??");
2642 line = dwfl_getsrc (dwfl, addr);
2646 const gchar *filename = dwfl_lineinfo (line, &addr,
2647 &nline, NULL, NULL, NULL);
2649 g_string_append_printf (trace, "%s:%d", strrchr (filename,
2650 G_DIR_SEPARATOR) + 1, nline);
2652 const gchar *eflfile = NULL;
2654 dwfl_module_info (module, NULL, NULL, NULL, NULL, NULL, &eflfile, NULL);
2655 g_string_append_printf (trace, "%s:%p", eflfile ? eflfile : "??", ip);
2660 #endif /* HAVE_DW */
2663 generate_unwind_trace (GstStackTraceFlags flags)
2666 unw_cursor_t cursor;
2667 gboolean use_libunwind = TRUE;
2668 GString *trace = g_string_new (NULL);
2672 Dwfl_Callbacks callbacks = {
2673 .find_elf = dwfl_linux_proc_find_elf,
2674 .find_debuginfo = dwfl_standard_find_debuginfo,
2677 if ((flags & GST_STACK_TRACE_SHOW_FULL))
2678 dwfl = dwfl_begin (&callbacks);
2679 #endif /* HAVE_DW */
2681 unw_getcontext (&uc);
2682 unw_init_local (&cursor, &uc);
2684 while (unw_step (&cursor) > 0) {
2689 unw_get_reg (&cursor, UNW_REG_IP, &ip);
2690 if (append_debug_info (trace, dwfl, (void *) (ip - 4))) {
2691 use_libunwind = FALSE;
2692 g_string_append (trace, ")\n");
2695 #endif /* HAVE_DW */
2697 if (use_libunwind) {
2700 unw_word_t offset = 0;
2701 unw_get_proc_name (&cursor, name, sizeof (name), &offset);
2702 g_string_append_printf (trace, "%s (0x%" G_GSIZE_FORMAT ")\n", name,
2712 return g_string_free (trace, FALSE);
2715 #endif /* HAVE_UNWIND */
2717 #ifdef HAVE_BACKTRACE
2719 generate_backtrace_trace (void)
2722 void *buffer[BT_BUF_SIZE];
2726 trace = g_string_new (NULL);
2727 nptrs = backtrace (buffer, BT_BUF_SIZE);
2729 strings = backtrace_symbols (buffer, nptrs);
2734 for (j = 0; j < nptrs; j++)
2735 g_string_append_printf (trace, "%s\n", strings[j]);
2737 return g_string_free (trace, FALSE);
2740 #define generate_backtrace_trace() NULL
2741 #endif /* HAVE_BACKTRACE */
2744 * gst_debug_get_stack_trace:
2745 * @flags: A set of #GstStackTraceFlags to determine how the stack
2746 * trace should look like. Pass 0 to retrieve a minimal backtrace.
2748 * If libunwind or glibc backtrace are present, a stack trace
2754 gst_debug_get_stack_trace (GstStackTraceFlags flags)
2756 gchar *trace = NULL;
2757 #ifdef HAVE_BACKTRACE
2758 gboolean have_backtrace = TRUE;
2760 gboolean have_backtrace = FALSE;
2764 if ((flags & GST_STACK_TRACE_SHOW_FULL) || !have_backtrace)
2765 trace = generate_unwind_trace (flags);
2766 #endif /* HAVE_UNWIND */
2770 else if (have_backtrace)
2771 return generate_backtrace_trace ();
2777 * gst_debug_print_stack_trace:
2779 * If libunwind or glibc backtrace are present
2780 * a stack trace is printed.
2783 gst_debug_print_stack_trace (void)
2785 gchar *trace = gst_debug_get_stack_trace (GST_STACK_TRACE_SHOW_FULL);
2788 g_print ("%s\n", trace);