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gstreamer/gst/gstinfo.c
Arun Raghavan b5028383ab gst: Fix up a bunch of GIR annotations 
This is mostly on nullable return values, and some other minor ones that
I ran across.

https://bugzilla.gnome.org/show_bug.cgi?id=789319
2018-01-27 10:41:24 +00:00

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/* GStreamer
* Copyright (C) 1999,2000 Erik Walthinsen <omega@cse.ogi.edu>
* 2000 Wim Taymans <wtay@chello.be>
* 2003 Benjamin Otte <in7y118@public.uni-hamburg.de>
* Copyright (C) 2008-2009 Tim-Philipp Müller <tim centricular net>
*
* gstinfo.c: debugging functions
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public
* License along with this library; if not, write to the
* Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
* Boston, MA 02110-1301, USA.
*/
/**
* SECTION:gstinfo
* @title: GstInfo
* @short_description: Debugging and logging facilities
* @see_also: #gst-running for command line parameters
* and environment variables that affect the debugging output.
*
* GStreamer's debugging subsystem is an easy way to get information about what
* the application is doing. It is not meant for programming errors. Use GLib
* methods (g_warning and friends) for that.
*
* The debugging subsystem works only after GStreamer has been initialized
* - for example by calling gst_init().
*
* The debugging subsystem is used to log informational messages while the
* application runs. Each messages has some properties attached to it. Among
* these properties are the debugging category, the severity (called "level"
* here) and an optional #GObject it belongs to. Each of these messages is sent
* to all registered debugging handlers, which then handle the messages.
* GStreamer attaches a default handler on startup, which outputs requested
* messages to stderr.
*
* Messages are output by using shortcut macros like #GST_DEBUG,
* #GST_CAT_ERROR_OBJECT or similar. These all expand to calling gst_debug_log()
* with the right parameters.
* The only thing a developer will probably want to do is define his own
* categories. This is easily done with 3 lines. At the top of your code,
* declare
* the variables and set the default category.
* |[<!-- language="C" -->
* GST_DEBUG_CATEGORY_STATIC (my_category); // define category (statically)
* #define GST_CAT_DEFAULT my_category // set as default
* ]|
* After that you only need to initialize the category.
* |[<!-- language="C" -->
* GST_DEBUG_CATEGORY_INIT (my_category, "my category",
* 0, "This is my very own");
* ]|
* Initialization must be done before the category is used first.
* Plugins do this
* in their plugin_init function, libraries and applications should do that
* during their initialization.
*
* The whole debugging subsystem can be disabled at build time with passing the
* --disable-gst-debug switch to configure. If this is done, every function,
* macro and even structs described in this file evaluate to default values or
* nothing at all.
* So don't take addresses of these functions or use other tricks.
* If you must do that for some reason, there is still an option.
* If the debugging
* subsystem was compiled out, #GST_DISABLE_GST_DEBUG is defined in
* &lt;gst/gst.h&gt;,
* so you can check that before doing your trick.
* Disabling the debugging subsystem will give you a slight (read: unnoticeable)
* speed increase and will reduce the size of your compiled code. The GStreamer
* library itself becomes around 10% smaller.
*
* Please note that there are naming conventions for the names of debugging
* categories. These are explained at GST_DEBUG_CATEGORY_INIT().
*/
#define GST_INFO_C
#include "gst_private.h"
#include "gstinfo.h"
#undef gst_debug_remove_log_function
#undef gst_debug_add_log_function
#ifndef GST_DISABLE_GST_DEBUG
#ifdef HAVE_DLFCN_H
# include <dlfcn.h>
#endif
#include <stdio.h> /* fprintf */
#include <glib/gstdio.h>
#include <errno.h>
#ifdef HAVE_UNISTD_H
# include <unistd.h> /* getpid on UNIX */
#endif
#ifdef HAVE_PROCESS_H
# include <process.h> /* getpid on win32 */
#endif
#include <string.h> /* G_VA_COPY */
#ifdef G_OS_WIN32
# define WIN32_LEAN_AND_MEAN /* prevents from including too many things */
# include <windows.h> /* GetStdHandle, windows console */
#endif
#include "gst_private.h"
#include "gstutils.h"
#include "gstquark.h"
#include "gstsegment.h"
#include "gstvalue.h"
#include "gstcapsfeatures.h"
#ifdef HAVE_VALGRIND_VALGRIND_H
# include <valgrind/valgrind.h>
#endif
#include <glib/gprintf.h> /* g_sprintf */
/* our own printf implementation with custom extensions to %p for caps etc. */
#include "printf/printf.h"
#include "printf/printf-extension.h"
static char *gst_info_printf_pointer_extension_func (const char *format,
void *ptr);
#else /* GST_DISABLE_GST_DEBUG */
#include <glib/gprintf.h>
#endif /* !GST_DISABLE_GST_DEBUG */
#ifdef HAVE_UNWIND
/* No need for remote debugging so turn on the 'local only' optimizations in
* libunwind */
#define UNW_LOCAL_ONLY
#include <libunwind.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <stdarg.h>
#include <unistd.h>
#include <errno.h>
#ifdef HAVE_DW
#include <elfutils/libdwfl.h>
#endif /* HAVE_DW */
#endif /* HAVE_UNWIND */
#ifdef HAVE_BACKTRACE
#include <execinfo.h>
#define BT_BUF_SIZE 100
#endif /* HAVE_BACKTRACE */
extern gboolean gst_is_initialized (void);
/* we want these symbols exported even if debug is disabled, to maintain
* ABI compatibility. Unless GST_REMOVE_DISABLED is defined. */
#if !defined(GST_DISABLE_GST_DEBUG) || !defined(GST_REMOVE_DISABLED)
/* disabled by default, as soon as some threshold is set > NONE,
* it becomes enabled. */
gboolean _gst_debug_enabled = FALSE;
GstDebugLevel _gst_debug_min = GST_LEVEL_NONE;
GstDebugCategory *GST_CAT_DEFAULT = NULL;
GstDebugCategory *GST_CAT_GST_INIT = NULL;
GstDebugCategory *GST_CAT_MEMORY = NULL;
GstDebugCategory *GST_CAT_PARENTAGE = NULL;
GstDebugCategory *GST_CAT_STATES = NULL;
GstDebugCategory *GST_CAT_SCHEDULING = NULL;
GstDebugCategory *GST_CAT_BUFFER = NULL;
GstDebugCategory *GST_CAT_BUFFER_LIST = NULL;
GstDebugCategory *GST_CAT_BUS = NULL;
GstDebugCategory *GST_CAT_CAPS = NULL;
GstDebugCategory *GST_CAT_CLOCK = NULL;
GstDebugCategory *GST_CAT_ELEMENT_PADS = NULL;
GstDebugCategory *GST_CAT_PADS = NULL;
GstDebugCategory *GST_CAT_PERFORMANCE = NULL;
GstDebugCategory *GST_CAT_PIPELINE = NULL;
GstDebugCategory *GST_CAT_PLUGIN_LOADING = NULL;
GstDebugCategory *GST_CAT_PLUGIN_INFO = NULL;
GstDebugCategory *GST_CAT_PROPERTIES = NULL;
GstDebugCategory *GST_CAT_NEGOTIATION = NULL;
GstDebugCategory *GST_CAT_REFCOUNTING = NULL;
GstDebugCategory *GST_CAT_ERROR_SYSTEM = NULL;
GstDebugCategory *GST_CAT_EVENT = NULL;
GstDebugCategory *GST_CAT_MESSAGE = NULL;
GstDebugCategory *GST_CAT_PARAMS = NULL;
GstDebugCategory *GST_CAT_CALL_TRACE = NULL;
GstDebugCategory *GST_CAT_SIGNAL = NULL;
GstDebugCategory *GST_CAT_PROBE = NULL;
GstDebugCategory *GST_CAT_REGISTRY = NULL;
GstDebugCategory *GST_CAT_QOS = NULL;
GstDebugCategory *_priv_GST_CAT_POLL = NULL;
GstDebugCategory *GST_CAT_META = NULL;
GstDebugCategory *GST_CAT_LOCKING = NULL;
GstDebugCategory *GST_CAT_CONTEXT = NULL;
GstDebugCategory *_priv_GST_CAT_PROTECTION = NULL;
#endif /* !defined(GST_DISABLE_GST_DEBUG) || !defined(GST_REMOVE_DISABLED) */
#ifndef GST_DISABLE_GST_DEBUG
/* underscore is to prevent conflict with GST_CAT_DEBUG define */
GST_DEBUG_CATEGORY_STATIC (_GST_CAT_DEBUG);
#if 0
#if defined __sgi__
#include <rld_interface.h>
typedef struct DL_INFO
{
const char *dli_fname;
void *dli_fbase;
const char *dli_sname;
void *dli_saddr;
int dli_version;
int dli_reserved1;
long dli_reserved[4];
}
Dl_info;
#define _RLD_DLADDR 14
int dladdr (void *address, Dl_info * dl);
int
dladdr (void *address, Dl_info * dl)
{
void *v;
v = _rld_new_interface (_RLD_DLADDR, address, dl);
return (int) v;
}
#endif /* __sgi__ */
#endif
static void gst_debug_reset_threshold (gpointer category, gpointer unused);
static void gst_debug_reset_all_thresholds (void);
struct _GstDebugMessage
{
gchar *message;
const gchar *format;
va_list arguments;
};
/* list of all name/level pairs from --gst-debug and GST_DEBUG */
static GMutex __level_name_mutex;
static GSList *__level_name = NULL;
typedef struct
{
GPatternSpec *pat;
GstDebugLevel level;
}
LevelNameEntry;
/* list of all categories */
static GMutex __cat_mutex;
static GSList *__categories = NULL;
static GstDebugCategory *_gst_debug_get_category_locked (const gchar * name);
/* all registered debug handlers */
typedef struct
{
GstLogFunction func;
gpointer user_data;
GDestroyNotify notify;
}
LogFuncEntry;
static GMutex __log_func_mutex;
static GSList *__log_functions = NULL;
/* whether to add the default log function in gst_init() */
static gboolean add_default_log_func = TRUE;
#define PRETTY_TAGS_DEFAULT TRUE
static gboolean pretty_tags = PRETTY_TAGS_DEFAULT;
static volatile gint G_GNUC_MAY_ALIAS __default_level = GST_LEVEL_DEFAULT;
static volatile gint G_GNUC_MAY_ALIAS __use_color = GST_DEBUG_COLOR_MODE_ON;
/* FIXME: export this? */
gboolean
_priv_gst_in_valgrind (void)
{
static enum
{
GST_VG_UNCHECKED,
GST_VG_NO_VALGRIND,
GST_VG_INSIDE
}
in_valgrind = GST_VG_UNCHECKED;
if (in_valgrind == GST_VG_UNCHECKED) {
#ifdef HAVE_VALGRIND_VALGRIND_H
if (RUNNING_ON_VALGRIND) {
GST_CAT_INFO (GST_CAT_GST_INIT, "we're running inside valgrind");
in_valgrind = GST_VG_INSIDE;
} else {
GST_CAT_LOG (GST_CAT_GST_INIT, "not doing extra valgrind stuff");
in_valgrind = GST_VG_NO_VALGRIND;
}
#else
in_valgrind = GST_VG_NO_VALGRIND;
#endif
g_assert (in_valgrind == GST_VG_NO_VALGRIND ||
in_valgrind == GST_VG_INSIDE);
}
return (in_valgrind == GST_VG_INSIDE);
}
static gchar *
_replace_pattern_in_gst_debug_file_name (gchar * name, const char *token,
guint val)
{
gchar *token_start;
if ((token_start = strstr (name, token))) {
gsize token_len = strlen (token);
gchar *name_prefix = name;
gchar *name_suffix = token_start + token_len;
token_start[0] = '\0';
name = g_strdup_printf ("%s%u%s", name_prefix, val, name_suffix);
g_free (name_prefix);
}
return name;
}
static gchar *
_priv_gst_debug_file_name (const gchar * env)
{
gchar *name;
name = g_strdup (env);
name = _replace_pattern_in_gst_debug_file_name (name, "%p", getpid ());
name = _replace_pattern_in_gst_debug_file_name (name, "%r", g_random_int ());
return name;
}
/* Initialize the debugging system */
void
_priv_gst_debug_init (void)
{
const gchar *env;
FILE *log_file;
if (add_default_log_func) {
env = g_getenv ("GST_DEBUG_FILE");
if (env != NULL && *env != '\0') {
if (strcmp (env, "-") == 0) {
log_file = stdout;
} else {
gchar *name = _priv_gst_debug_file_name (env);
log_file = g_fopen (name, "w");
g_free (name);
if (log_file == NULL) {
g_printerr ("Could not open log file '%s' for writing: %s\n", env,
g_strerror (errno));
log_file = stderr;
}
}
} else {
log_file = stderr;
}
gst_debug_add_log_function (gst_debug_log_default, log_file, NULL);
}
__gst_printf_pointer_extension_set_func
(gst_info_printf_pointer_extension_func);
/* do NOT use a single debug function before this line has been run */
GST_CAT_DEFAULT = _gst_debug_category_new ("default",
GST_DEBUG_UNDERLINE, NULL);
_GST_CAT_DEBUG = _gst_debug_category_new ("GST_DEBUG",
GST_DEBUG_BOLD | GST_DEBUG_FG_YELLOW, "debugging subsystem");
/* FIXME: add descriptions here */
GST_CAT_GST_INIT = _gst_debug_category_new ("GST_INIT",
GST_DEBUG_BOLD | GST_DEBUG_FG_RED, NULL);
GST_CAT_MEMORY = _gst_debug_category_new ("GST_MEMORY",
GST_DEBUG_BOLD | GST_DEBUG_FG_BLUE, "memory");
GST_CAT_PARENTAGE = _gst_debug_category_new ("GST_PARENTAGE",
GST_DEBUG_BOLD | GST_DEBUG_FG_WHITE | GST_DEBUG_BG_RED, NULL);
GST_CAT_STATES = _gst_debug_category_new ("GST_STATES",
GST_DEBUG_BOLD | GST_DEBUG_FG_RED, NULL);
GST_CAT_SCHEDULING = _gst_debug_category_new ("GST_SCHEDULING",
GST_DEBUG_BOLD | GST_DEBUG_FG_MAGENTA, NULL);
GST_CAT_BUFFER = _gst_debug_category_new ("GST_BUFFER",
GST_DEBUG_BOLD | GST_DEBUG_BG_GREEN, NULL);
GST_CAT_BUFFER_LIST = _gst_debug_category_new ("GST_BUFFER_LIST",
GST_DEBUG_BOLD | GST_DEBUG_BG_GREEN, NULL);
GST_CAT_BUS = _gst_debug_category_new ("GST_BUS", GST_DEBUG_BG_YELLOW, NULL);
GST_CAT_CAPS = _gst_debug_category_new ("GST_CAPS",
GST_DEBUG_BOLD | GST_DEBUG_FG_BLUE, NULL);
GST_CAT_CLOCK = _gst_debug_category_new ("GST_CLOCK",
GST_DEBUG_BOLD | GST_DEBUG_FG_YELLOW, NULL);
GST_CAT_ELEMENT_PADS = _gst_debug_category_new ("GST_ELEMENT_PADS",
GST_DEBUG_BOLD | GST_DEBUG_FG_WHITE | GST_DEBUG_BG_RED, NULL);
GST_CAT_PADS = _gst_debug_category_new ("GST_PADS",
GST_DEBUG_BOLD | GST_DEBUG_FG_RED | GST_DEBUG_BG_RED, NULL);
GST_CAT_PERFORMANCE = _gst_debug_category_new ("GST_PERFORMANCE",
GST_DEBUG_BOLD | GST_DEBUG_FG_WHITE | GST_DEBUG_BG_RED, NULL);
GST_CAT_PIPELINE = _gst_debug_category_new ("GST_PIPELINE",
GST_DEBUG_BOLD | GST_DEBUG_FG_WHITE | GST_DEBUG_BG_RED, NULL);
GST_CAT_PLUGIN_LOADING = _gst_debug_category_new ("GST_PLUGIN_LOADING",
GST_DEBUG_BOLD | GST_DEBUG_FG_CYAN, NULL);
GST_CAT_PLUGIN_INFO = _gst_debug_category_new ("GST_PLUGIN_INFO",
GST_DEBUG_BOLD | GST_DEBUG_FG_CYAN, NULL);
GST_CAT_PROPERTIES = _gst_debug_category_new ("GST_PROPERTIES",
GST_DEBUG_BOLD | GST_DEBUG_FG_WHITE | GST_DEBUG_BG_BLUE, NULL);
GST_CAT_NEGOTIATION = _gst_debug_category_new ("GST_NEGOTIATION",
GST_DEBUG_BOLD | GST_DEBUG_FG_BLUE, NULL);
GST_CAT_REFCOUNTING = _gst_debug_category_new ("GST_REFCOUNTING",
GST_DEBUG_BOLD | GST_DEBUG_FG_RED | GST_DEBUG_BG_BLUE, NULL);
GST_CAT_ERROR_SYSTEM = _gst_debug_category_new ("GST_ERROR_SYSTEM",
GST_DEBUG_BOLD | GST_DEBUG_FG_RED | GST_DEBUG_BG_WHITE, NULL);
GST_CAT_EVENT = _gst_debug_category_new ("GST_EVENT",
GST_DEBUG_BOLD | GST_DEBUG_FG_BLUE, NULL);
GST_CAT_MESSAGE = _gst_debug_category_new ("GST_MESSAGE",
GST_DEBUG_BOLD | GST_DEBUG_FG_WHITE | GST_DEBUG_BG_RED, NULL);
GST_CAT_PARAMS = _gst_debug_category_new ("GST_PARAMS",
GST_DEBUG_BOLD | GST_DEBUG_FG_BLACK | GST_DEBUG_BG_YELLOW, NULL);
GST_CAT_CALL_TRACE = _gst_debug_category_new ("GST_CALL_TRACE",
GST_DEBUG_BOLD, NULL);
GST_CAT_SIGNAL = _gst_debug_category_new ("GST_SIGNAL",
GST_DEBUG_BOLD | GST_DEBUG_FG_WHITE | GST_DEBUG_BG_RED, NULL);
GST_CAT_PROBE = _gst_debug_category_new ("GST_PROBE",
GST_DEBUG_BOLD | GST_DEBUG_FG_GREEN, "pad probes");
GST_CAT_REGISTRY = _gst_debug_category_new ("GST_REGISTRY", 0, "registry");
GST_CAT_QOS = _gst_debug_category_new ("GST_QOS", 0, "QoS");
_priv_GST_CAT_POLL = _gst_debug_category_new ("GST_POLL", 0, "poll");
GST_CAT_META = _gst_debug_category_new ("GST_META", 0, "meta");
GST_CAT_LOCKING = _gst_debug_category_new ("GST_LOCKING", 0, "locking");
GST_CAT_CONTEXT = _gst_debug_category_new ("GST_CONTEXT", 0, NULL);
_priv_GST_CAT_PROTECTION =
_gst_debug_category_new ("GST_PROTECTION", 0, "protection");
/* print out the valgrind message if we're in valgrind */
_priv_gst_in_valgrind ();
env = g_getenv ("GST_DEBUG_OPTIONS");
if (env != NULL) {
if (strstr (env, "full_tags") || strstr (env, "full-tags"))
pretty_tags = FALSE;
else if (strstr (env, "pretty_tags") || strstr (env, "pretty-tags"))
pretty_tags = TRUE;
}
if (g_getenv ("GST_DEBUG_NO_COLOR") != NULL)
gst_debug_set_color_mode (GST_DEBUG_COLOR_MODE_OFF);
env = g_getenv ("GST_DEBUG_COLOR_MODE");
if (env)
gst_debug_set_color_mode_from_string (env);
env = g_getenv ("GST_DEBUG");
if (env)
gst_debug_set_threshold_from_string (env, FALSE);
}
/* we can't do this further above, because we initialize the GST_CAT_DEFAULT struct */
#define GST_CAT_DEFAULT _GST_CAT_DEBUG
/**
* gst_debug_log:
* @category: category to log
* @level: level of the message is in
* @file: the file that emitted the message, usually the __FILE__ identifier
* @function: the function that emitted the message
* @line: the line from that the message was emitted, usually __LINE__
* @object: (transfer none) (allow-none): the object this message relates to,
* or %NULL if none
* @format: a printf style format string
* @...: optional arguments for the format
*
* Logs the given message using the currently registered debugging handlers.
*/
void
gst_debug_log (GstDebugCategory * category, GstDebugLevel level,
const gchar * file, const gchar * function, gint line,
GObject * object, const gchar * format, ...)
{
va_list var_args;
va_start (var_args, format);
gst_debug_log_valist (category, level, file, function, line, object, format,
var_args);
va_end (var_args);
}
/* based on g_basename(), which we can't use because it was deprecated */
static inline const gchar *
gst_path_basename (const gchar * file_name)
{
register const gchar *base;
base = strrchr (file_name, G_DIR_SEPARATOR);
{
const gchar *q = strrchr (file_name, '/');
if (base == NULL || (q != NULL && q > base))
base = q;
}
if (base)
return base + 1;
if (g_ascii_isalpha (file_name[0]) && file_name[1] == ':')
return file_name + 2;
return file_name;
}
/**
* gst_debug_log_valist:
* @category: category to log
* @level: level of the message is in
* @file: the file that emitted the message, usually the __FILE__ identifier
* @function: the function that emitted the message
* @line: the line from that the message was emitted, usually __LINE__
* @object: (transfer none) (allow-none): the object this message relates to,
* or %NULL if none
* @format: a printf style format string
* @args: optional arguments for the format
*
* Logs the given message using the currently registered debugging handlers.
*/
void
gst_debug_log_valist (GstDebugCategory * category, GstDebugLevel level,
const gchar * file, const gchar * function, gint line,
GObject * object, const gchar * format, va_list args)
{
GstDebugMessage message;
LogFuncEntry *entry;
GSList *handler;
g_return_if_fail (category != NULL);
if (level > gst_debug_category_get_threshold (category))
return;
g_return_if_fail (file != NULL);
g_return_if_fail (function != NULL);
g_return_if_fail (format != NULL);
message.message = NULL;
message.format = format;
G_VA_COPY (message.arguments, args);
handler = __log_functions;
while (handler) {
entry = handler->data;
handler = g_slist_next (handler);
entry->func (category, level, file, function, line, object, &message,
entry->user_data);
}
g_free (message.message);
va_end (message.arguments);
}
/**
* gst_debug_message_get:
* @message: a debug message
*
* Gets the string representation of a #GstDebugMessage. This function is used
* in debug handlers to extract the message.
*
* Returns: (nullable): the string representation of a #GstDebugMessage.
*/
const gchar *
gst_debug_message_get (GstDebugMessage * message)
{
if (message->message == NULL) {
int len;
len = __gst_vasprintf (&message->message, message->format,
message->arguments);
if (len < 0)
message->message = NULL;
}
return message->message;
}
#define MAX_BUFFER_DUMP_STRING_LEN 100
/* structure_to_pretty_string:
* @str: a serialized #GstStructure
*
* If the serialized structure contains large buffers such as images the hex
* representation of those buffers will be shortened so that the string remains
* readable.
*
* Returns: the filtered string
*/
static gchar *
prettify_structure_string (gchar * str)
{
gchar *pos = str, *end;
while ((pos = strstr (pos, "(buffer)"))) {
guint count = 0;
pos += strlen ("(buffer)");
for (end = pos; *end != '\0' && *end != ';' && *end != ' '; ++end)
++count;
if (count > MAX_BUFFER_DUMP_STRING_LEN) {
memcpy (pos + MAX_BUFFER_DUMP_STRING_LEN - 6, "..", 2);
memcpy (pos + MAX_BUFFER_DUMP_STRING_LEN - 4, pos + count - 4, 4);
memmove (pos + MAX_BUFFER_DUMP_STRING_LEN, pos + count,
strlen (pos + count) + 1);
pos += MAX_BUFFER_DUMP_STRING_LEN;
}
}
return str;
}
static inline gchar *
gst_info_structure_to_string (const GstStructure * s)
{
if (G_LIKELY (s)) {
gchar *str = gst_structure_to_string (s);
if (G_UNLIKELY (pretty_tags && s->name == GST_QUARK (TAGLIST)))
return prettify_structure_string (str);
else
return str;
}
return NULL;
}
static inline gchar *
gst_info_describe_buffer (GstBuffer * buffer)
{
const gchar *offset_str = "none";
const gchar *offset_end_str = "none";
gchar offset_buf[32], offset_end_buf[32];
if (GST_BUFFER_OFFSET_IS_VALID (buffer)) {
g_snprintf (offset_buf, sizeof (offset_buf), "%" G_GUINT64_FORMAT,
GST_BUFFER_OFFSET (buffer));
offset_str = offset_buf;
}
if (GST_BUFFER_OFFSET_END_IS_VALID (buffer)) {
g_snprintf (offset_end_buf, sizeof (offset_end_buf), "%" G_GUINT64_FORMAT,
GST_BUFFER_OFFSET_END (buffer));
offset_end_str = offset_end_buf;
}
return g_strdup_printf ("buffer: %p, pts %" GST_TIME_FORMAT ", dts %"
GST_TIME_FORMAT ", dur %" GST_TIME_FORMAT ", size %" G_GSIZE_FORMAT
", offset %s, offset_end %s, flags 0x%x", buffer,
GST_TIME_ARGS (GST_BUFFER_PTS (buffer)),
GST_TIME_ARGS (GST_BUFFER_DTS (buffer)),
GST_TIME_ARGS (GST_BUFFER_DURATION (buffer)),
gst_buffer_get_size (buffer), offset_str, offset_end_str,
GST_BUFFER_FLAGS (buffer));
}
static inline gchar *
gst_info_describe_buffer_list (GstBufferList * list)
{
GstClockTime pts = GST_CLOCK_TIME_NONE;
GstClockTime dts = GST_CLOCK_TIME_NONE;
gsize total_size = 0;
guint n, i;
n = gst_buffer_list_length (list);
for (i = 0; i < n; ++i) {
GstBuffer *buf = gst_buffer_list_get (list, i);
if (i == 0) {
pts = GST_BUFFER_PTS (buf);
dts = GST_BUFFER_DTS (buf);
}
total_size += gst_buffer_get_size (buf);
}
return g_strdup_printf ("bufferlist: %p, %u buffers, pts %" GST_TIME_FORMAT
", dts %" GST_TIME_FORMAT ", size %" G_GSIZE_FORMAT, list, n,
GST_TIME_ARGS (pts), GST_TIME_ARGS (dts), total_size);
}
static inline gchar *
gst_info_describe_event (GstEvent * event)
{
gchar *s, *ret;
s = gst_info_structure_to_string (gst_event_get_structure (event));
ret = g_strdup_printf ("%s event: %p, time %" GST_TIME_FORMAT
", seq-num %d, %s", GST_EVENT_TYPE_NAME (event), event,
GST_TIME_ARGS (GST_EVENT_TIMESTAMP (event)), GST_EVENT_SEQNUM (event),
(s ? s : "(NULL)"));
g_free (s);
return ret;
}
static inline gchar *
gst_info_describe_message (GstMessage * message)
{
gchar *s, *ret;
s = gst_info_structure_to_string (gst_message_get_structure (message));
ret = g_strdup_printf ("%s message: %p, time %" GST_TIME_FORMAT
", seq-num %d, element '%s', %s", GST_MESSAGE_TYPE_NAME (message),
message, GST_TIME_ARGS (GST_MESSAGE_TIMESTAMP (message)),
GST_MESSAGE_SEQNUM (message),
((message->src) ? GST_ELEMENT_NAME (message->src) : "(NULL)"),
(s ? s : "(NULL)"));
g_free (s);
return ret;
}
static inline gchar *
gst_info_describe_query (GstQuery * query)
{
gchar *s, *ret;
s = gst_info_structure_to_string (gst_query_get_structure (query));
ret = g_strdup_printf ("%s query: %p, %s", GST_QUERY_TYPE_NAME (query),
query, (s ? s : "(NULL)"));
g_free (s);
return ret;
}
static inline gchar *
gst_info_describe_stream (GstStream * stream)
{
gchar *ret, *caps_str = NULL, *tags_str = NULL;
GstCaps *caps;
GstTagList *tags;
caps = gst_stream_get_caps (stream);
if (caps) {
caps_str = gst_caps_to_string (caps);
gst_caps_unref (caps);
}
tags = gst_stream_get_tags (stream);
if (tags) {
tags_str = gst_tag_list_to_string (tags);
gst_tag_list_unref (tags);
}
ret =
g_strdup_printf ("stream %s %p, ID %s, flags 0x%x, caps [%s], tags [%s]",
gst_stream_type_get_name (gst_stream_get_stream_type (stream)), stream,
gst_stream_get_stream_id (stream), gst_stream_get_stream_flags (stream),
caps_str ? caps_str : "", tags_str ? tags_str : "");
g_free (caps_str);
g_free (tags_str);
return ret;
}
static inline gchar *
gst_info_describe_stream_collection (GstStreamCollection * collection)
{
gchar *ret;
GString *streams_str;
guint i;
streams_str = g_string_new ("<");
for (i = 0; i < gst_stream_collection_get_size (collection); i++) {
GstStream *stream = gst_stream_collection_get_stream (collection, i);
gchar *s;
s = gst_info_describe_stream (stream);
g_string_append_printf (streams_str, " %s,", s);
g_free (s);
}
g_string_append (streams_str, " >");
ret = g_strdup_printf ("collection %p (%d streams) %s", collection,
gst_stream_collection_get_size (collection), streams_str->str);
g_string_free (streams_str, TRUE);
return ret;
}
static gchar *
gst_debug_print_object (gpointer ptr)
{
GObject *object = (GObject *) ptr;
#ifdef unused
/* This is a cute trick to detect unmapped memory, but is unportable,
* slow, screws around with madvise, and not actually that useful. */
{
int ret;
ret = madvise ((void *) ((unsigned long) ptr & (~0xfff)), 4096, 0);
if (ret == -1 && errno == ENOMEM) {
buffer = g_strdup_printf ("%p (unmapped memory)", ptr);
}
}
#endif
/* nicely printed object */
if (object == NULL) {
return g_strdup ("(NULL)");
}
if (GST_IS_CAPS (ptr)) {
return gst_caps_to_string ((const GstCaps *) ptr);
}
if (GST_IS_STRUCTURE (ptr)) {
return gst_info_structure_to_string ((const GstStructure *) ptr);
}
if (*(GType *) ptr == GST_TYPE_CAPS_FEATURES) {
return gst_caps_features_to_string ((const GstCapsFeatures *) ptr);
}
if (GST_IS_TAG_LIST (ptr)) {
gchar *str = gst_tag_list_to_string ((GstTagList *) ptr);
if (G_UNLIKELY (pretty_tags))
return prettify_structure_string (str);
else
return str;
}
if (*(GType *) ptr == GST_TYPE_DATE_TIME) {
return __gst_date_time_serialize ((GstDateTime *) ptr, TRUE);
}
if (GST_IS_BUFFER (ptr)) {
return gst_info_describe_buffer (GST_BUFFER_CAST (ptr));
}
if (GST_IS_BUFFER_LIST (ptr)) {
return gst_info_describe_buffer_list (GST_BUFFER_LIST_CAST (ptr));
}
#ifdef USE_POISONING
if (*(guint32 *) ptr == 0xffffffff) {
return g_strdup_printf ("<poisoned@%p>", ptr);
}
#endif
if (GST_IS_MESSAGE (object)) {
return gst_info_describe_message (GST_MESSAGE_CAST (object));
}
if (GST_IS_QUERY (object)) {
return gst_info_describe_query (GST_QUERY_CAST (object));
}
if (GST_IS_EVENT (object)) {
return gst_info_describe_event (GST_EVENT_CAST (object));
}
if (GST_IS_CONTEXT (object)) {
GstContext *context = GST_CONTEXT_CAST (object);
gchar *s, *ret;
const gchar *type;
const GstStructure *structure;
type = gst_context_get_context_type (context);
structure = gst_context_get_structure (context);
s = gst_info_structure_to_string (structure);
ret = g_strdup_printf ("context '%s'='%s'", type, s);
g_free (s);
return ret;
}
if (GST_IS_STREAM (object)) {
return gst_info_describe_stream (GST_STREAM_CAST (object));
}
if (GST_IS_STREAM_COLLECTION (object)) {
return
gst_info_describe_stream_collection (GST_STREAM_COLLECTION_CAST
(object));
}
if (GST_IS_PAD (object) && GST_OBJECT_NAME (object)) {
return g_strdup_printf ("<%s:%s>", GST_DEBUG_PAD_NAME (object));
}
if (GST_IS_OBJECT (object) && GST_OBJECT_NAME (object)) {
return g_strdup_printf ("<%s>", GST_OBJECT_NAME (object));
}
if (G_IS_OBJECT (object)) {
return g_strdup_printf ("<%s@%p>", G_OBJECT_TYPE_NAME (object), object);
}
return g_strdup_printf ("%p", ptr);
}
static gchar *
gst_debug_print_segment (gpointer ptr)
{
GstSegment *segment = (GstSegment *) ptr;
/* nicely printed segment */
if (segment == NULL) {
return g_strdup ("(NULL)");
}
switch (segment->format) {
case GST_FORMAT_UNDEFINED:{
return g_strdup_printf ("UNDEFINED segment");
}
case GST_FORMAT_TIME:{
return g_strdup_printf ("time segment start=%" GST_TIME_FORMAT
", offset=%" GST_TIME_FORMAT ", stop=%" GST_TIME_FORMAT
", rate=%f, applied_rate=%f" ", flags=0x%02x, time=%" GST_TIME_FORMAT
", base=%" GST_TIME_FORMAT ", position %" GST_TIME_FORMAT
", duration %" GST_TIME_FORMAT, GST_TIME_ARGS (segment->start),
GST_TIME_ARGS (segment->offset), GST_TIME_ARGS (segment->stop),
segment->rate, segment->applied_rate, (guint) segment->flags,
GST_TIME_ARGS (segment->time), GST_TIME_ARGS (segment->base),
GST_TIME_ARGS (segment->position), GST_TIME_ARGS (segment->duration));
}
default:{
const gchar *format_name;
format_name = gst_format_get_name (segment->format);
if (G_UNLIKELY (format_name == NULL))
format_name = "(UNKNOWN FORMAT)";
return g_strdup_printf ("%s segment start=%" G_GINT64_FORMAT
", offset=%" G_GINT64_FORMAT ", stop=%" G_GINT64_FORMAT
", rate=%f, applied_rate=%f" ", flags=0x%02x, time=%" G_GINT64_FORMAT
", base=%" G_GINT64_FORMAT ", position %" G_GINT64_FORMAT
", duration %" G_GINT64_FORMAT, format_name, segment->start,
segment->offset, segment->stop, segment->rate, segment->applied_rate,
(guint) segment->flags, segment->time, segment->base,
segment->position, segment->duration);
}
}
}
static char *
gst_info_printf_pointer_extension_func (const char *format, void *ptr)
{
char *s = NULL;
if (format[0] == 'p' && format[1] == '\a') {
switch (format[2]) {
case 'A': /* GST_PTR_FORMAT */
s = gst_debug_print_object (ptr);
break;
case 'B': /* GST_SEGMENT_FORMAT */
s = gst_debug_print_segment (ptr);
break;
case 'a': /* GST_WRAPPED_PTR_FORMAT */
s = priv_gst_string_take_and_wrap (gst_debug_print_object (ptr));
break;
default:
/* must have been compiled against a newer version with an extension
* we don't known about yet - just ignore and fallback to %p below */
break;
}
}
if (s == NULL)
s = g_strdup_printf ("%p", ptr);
return s;
}
/**
* gst_debug_construct_term_color:
* @colorinfo: the color info
*
* Constructs a string that can be used for getting the desired color in color
* terminals.
* You need to free the string after use.
*
* Returns: (transfer full) (type gchar*): a string containing the color
* definition
*/
gchar *
gst_debug_construct_term_color (guint colorinfo)
{
GString *color;
color = g_string_new ("\033[00");
if (colorinfo & GST_DEBUG_BOLD) {
g_string_append_len (color, ";01", 3);
}
if (colorinfo & GST_DEBUG_UNDERLINE) {
g_string_append_len (color, ";04", 3);
}
if (colorinfo & GST_DEBUG_FG_MASK) {
g_string_append_printf (color, ";3%1d", colorinfo & GST_DEBUG_FG_MASK);
}
if (colorinfo & GST_DEBUG_BG_MASK) {
g_string_append_printf (color, ";4%1d",
(colorinfo & GST_DEBUG_BG_MASK) >> 4);
}
g_string_append_c (color, 'm');
return g_string_free (color, FALSE);
}
/**
* gst_debug_construct_win_color:
* @colorinfo: the color info
*
* Constructs an integer that can be used for getting the desired color in
* windows' terminals (cmd.exe). As there is no mean to underline, we simply
* ignore this attribute.
*
* This function returns 0 on non-windows machines.
*
* Returns: an integer containing the color definition
*/
gint
gst_debug_construct_win_color (guint colorinfo)
{
gint color = 0;
#ifdef G_OS_WIN32
static const guchar ansi_to_win_fg[8] = {
0, /* black */
FOREGROUND_RED, /* red */
FOREGROUND_GREEN, /* green */
FOREGROUND_RED | FOREGROUND_GREEN, /* yellow */
FOREGROUND_BLUE, /* blue */
FOREGROUND_RED | FOREGROUND_BLUE, /* magenta */
FOREGROUND_GREEN | FOREGROUND_BLUE, /* cyan */
FOREGROUND_RED | FOREGROUND_GREEN | FOREGROUND_BLUE /* white */
};
static const guchar ansi_to_win_bg[8] = {
0,
BACKGROUND_RED,
BACKGROUND_GREEN,
BACKGROUND_RED | BACKGROUND_GREEN,
BACKGROUND_BLUE,
BACKGROUND_RED | BACKGROUND_BLUE,
BACKGROUND_GREEN | FOREGROUND_BLUE,
BACKGROUND_RED | BACKGROUND_GREEN | BACKGROUND_BLUE
};
/* we draw black as white, as cmd.exe can only have black bg */
if ((colorinfo & (GST_DEBUG_FG_MASK | GST_DEBUG_BG_MASK)) == 0) {
color = ansi_to_win_fg[7];
}
if (colorinfo & GST_DEBUG_UNDERLINE) {
color |= BACKGROUND_INTENSITY;
}
if (colorinfo & GST_DEBUG_BOLD) {
color |= FOREGROUND_INTENSITY;
}
if (colorinfo & GST_DEBUG_FG_MASK) {
color |= ansi_to_win_fg[colorinfo & GST_DEBUG_FG_MASK];
}
if (colorinfo & GST_DEBUG_BG_MASK) {
color |= ansi_to_win_bg[(colorinfo & GST_DEBUG_BG_MASK) >> 4];
}
#endif
return color;
}
/* width of %p varies depending on actual value of pointer, which can make
* output unevenly aligned if multiple threads are involved, hence the %14p
* (should really be %18p, but %14p seems a good compromise between too many
* white spaces and likely unalignment on my system) */
#if defined (GLIB_SIZEOF_VOID_P) && GLIB_SIZEOF_VOID_P == 8
#define PTR_FMT "%14p"
#else
#define PTR_FMT "%10p"
#endif
#define PID_FMT "%5d"
#define CAT_FMT "%20s %s:%d:%s:%s"
#ifdef G_OS_WIN32
static const guchar levelcolormap_w32[GST_LEVEL_COUNT] = {
/* GST_LEVEL_NONE */
FOREGROUND_RED | FOREGROUND_GREEN | FOREGROUND_BLUE,
/* GST_LEVEL_ERROR */
FOREGROUND_RED | FOREGROUND_INTENSITY,
/* GST_LEVEL_WARNING */
FOREGROUND_RED | FOREGROUND_GREEN | FOREGROUND_INTENSITY,
/* GST_LEVEL_INFO */
FOREGROUND_GREEN | FOREGROUND_INTENSITY,
/* GST_LEVEL_DEBUG */
FOREGROUND_GREEN | FOREGROUND_BLUE,
/* GST_LEVEL_LOG */
FOREGROUND_RED | FOREGROUND_GREEN | FOREGROUND_BLUE,
/* GST_LEVEL_FIXME */
FOREGROUND_RED | FOREGROUND_GREEN,
/* GST_LEVEL_TRACE */
FOREGROUND_RED | FOREGROUND_GREEN | FOREGROUND_BLUE,
/* placeholder for log level 8 */
0,
/* GST_LEVEL_MEMDUMP */
FOREGROUND_RED | FOREGROUND_GREEN | FOREGROUND_BLUE
};
static const guchar available_colors[] = {
FOREGROUND_RED, FOREGROUND_GREEN, FOREGROUND_RED | FOREGROUND_GREEN,
FOREGROUND_BLUE, FOREGROUND_RED | FOREGROUND_BLUE,
FOREGROUND_GREEN | FOREGROUND_BLUE,
};
#endif /* G_OS_WIN32 */
static const gchar *levelcolormap[GST_LEVEL_COUNT] = {
"\033[37m", /* GST_LEVEL_NONE */
"\033[31;01m", /* GST_LEVEL_ERROR */
"\033[33;01m", /* GST_LEVEL_WARNING */
"\033[32;01m", /* GST_LEVEL_INFO */
"\033[36m", /* GST_LEVEL_DEBUG */
"\033[37m", /* GST_LEVEL_LOG */
"\033[33;01m", /* GST_LEVEL_FIXME */
"\033[37m", /* GST_LEVEL_TRACE */
"\033[37m", /* placeholder for log level 8 */
"\033[37m" /* GST_LEVEL_MEMDUMP */
};
/**
* gst_debug_log_default:
* @category: category to log
* @level: level of the message
* @file: the file that emitted the message, usually the __FILE__ identifier
* @function: the function that emitted the message
* @line: the line from that the message was emitted, usually __LINE__
* @message: the actual message
* @object: (transfer none) (allow-none): the object this message relates to,
* or %NULL if none
* @user_data: the FILE* to log to
*
* The default logging handler used by GStreamer. Logging functions get called
* whenever a macro like GST_DEBUG or similar is used. By default this function
* is setup to output the message and additional info to stderr (or the log file
* specified via the GST_DEBUG_FILE environment variable) as received via
* @user_data.
*
* You can add other handlers by using gst_debug_add_log_function().
* And you can remove this handler by calling
* gst_debug_remove_log_function(gst_debug_log_default);
*/
void
gst_debug_log_default (GstDebugCategory * category, GstDebugLevel level,
const gchar * file, const gchar * function, gint line,
GObject * object, GstDebugMessage * message, gpointer user_data)
{
gint pid;
GstClockTime elapsed;
gchar *obj = NULL;
GstDebugColorMode color_mode;
FILE *log_file = user_data ? user_data : stderr;
gchar c;
/* __FILE__ might be a file name or an absolute path or a
* relative path, irrespective of the exact compiler used,
* in which case we want to shorten it to the filename for
* readability. */
c = file[0];
if (c == '.' || c == '/' || c == '\\' || (c != '\0' && file[1] == ':')) {
file = gst_path_basename (file);
}
pid = getpid ();
color_mode = gst_debug_get_color_mode ();
if (object) {
obj = gst_debug_print_object (object);
} else {
obj = (gchar *) "";
}
elapsed = GST_CLOCK_DIFF (_priv_gst_start_time, gst_util_get_timestamp ());
if (color_mode != GST_DEBUG_COLOR_MODE_OFF) {
#ifdef G_OS_WIN32
/* We take a lock to keep colors and content together.
* Maybe there is a better way but for now this will do the right
* thing. */
static GMutex win_print_mutex;
g_mutex_lock (&win_print_mutex);
if (color_mode == GST_DEBUG_COLOR_MODE_UNIX) {
#endif
/* colors, non-windows */
gchar *color = NULL;
const gchar *clear;
gchar pidcolor[10];
const gchar *levelcolor;
color = gst_debug_construct_term_color (gst_debug_category_get_color
(category));
clear = "\033[00m";
g_sprintf (pidcolor, "\033[3%1dm", pid % 6 + 31);
levelcolor = levelcolormap[level];
#define PRINT_FMT " %s"PID_FMT"%s "PTR_FMT" %s%s%s %s"CAT_FMT"%s %s\n"
fprintf (log_file, "%" GST_TIME_FORMAT PRINT_FMT, GST_TIME_ARGS (elapsed),
pidcolor, pid, clear, g_thread_self (), levelcolor,
gst_debug_level_get_name (level), clear, color,
gst_debug_category_get_name (category), file, line, function, obj,
clear, gst_debug_message_get (message));
fflush (log_file);
#undef PRINT_FMT
g_free (color);
#ifdef G_OS_WIN32
} else {
/* colors, windows. */
const gint clear = FOREGROUND_RED | FOREGROUND_GREEN | FOREGROUND_BLUE;
#define SET_COLOR(c) G_STMT_START { \
if (log_file == stderr) \
SetConsoleTextAttribute (GetStdHandle (STD_ERROR_HANDLE), (c)); \
} G_STMT_END
/* timestamp */
fprintf (log_file, "%" GST_TIME_FORMAT " ", GST_TIME_ARGS (elapsed));
fflush (log_file);
/* pid */
SET_COLOR (available_colors[pid % G_N_ELEMENTS (available_colors)]);
fprintf (log_file, PID_FMT, pid);
fflush (log_file);
/* thread */
SET_COLOR (clear);
fprintf (log_file, " " PTR_FMT " ", g_thread_self ());
fflush (log_file);
/* level */
SET_COLOR (levelcolormap_w32[level]);
fprintf (log_file, "%s ", gst_debug_level_get_name (level));
fflush (log_file);
/* category */
SET_COLOR (gst_debug_construct_win_color (gst_debug_category_get_color
(category)));
fprintf (log_file, CAT_FMT, gst_debug_category_get_name (category),
file, line, function, obj);
fflush (log_file);
/* message */
SET_COLOR (clear);
fprintf (log_file, " %s\n", gst_debug_message_get (message));
fflush (log_file);
}
g_mutex_unlock (&win_print_mutex);
#endif
} else {
/* no color, all platforms */
#define PRINT_FMT " "PID_FMT" "PTR_FMT" %s "CAT_FMT" %s\n"
fprintf (log_file, "%" GST_TIME_FORMAT PRINT_FMT, GST_TIME_ARGS (elapsed),
pid, g_thread_self (), gst_debug_level_get_name (level),
gst_debug_category_get_name (category), file, line, function, obj,
gst_debug_message_get (message));
fflush (log_file);
#undef PRINT_FMT
}
if (object != NULL)
g_free (obj);
}
/**
* gst_debug_level_get_name:
* @level: the level to get the name for
*
* Get the string representation of a debugging level
*
* Returns: the name
*/
const gchar *
gst_debug_level_get_name (GstDebugLevel level)
{
switch (level) {
case GST_LEVEL_NONE:
return "";
case GST_LEVEL_ERROR:
return "ERROR ";
case GST_LEVEL_WARNING:
return "WARN ";
case GST_LEVEL_INFO:
return "INFO ";
case GST_LEVEL_DEBUG:
return "DEBUG ";
case GST_LEVEL_LOG:
return "LOG ";
case GST_LEVEL_FIXME:
return "FIXME ";
case GST_LEVEL_TRACE:
return "TRACE ";
case GST_LEVEL_MEMDUMP:
return "MEMDUMP";
default:
g_warning ("invalid level specified for gst_debug_level_get_name");
return "";
}
}
/**
* gst_debug_add_log_function:
* @func: the function to use
* @user_data: user data
* @notify: called when @user_data is not used anymore
*
* Adds the logging function to the list of logging functions.
* Be sure to use #G_GNUC_NO_INSTRUMENT on that function, it is needed.
*/
void
gst_debug_add_log_function (GstLogFunction func, gpointer user_data,
GDestroyNotify notify)
{
LogFuncEntry *entry;
GSList *list;
if (func == NULL)
func = gst_debug_log_default;
entry = g_slice_new (LogFuncEntry);
entry->func = func;
entry->user_data = user_data;
entry->notify = notify;
/* FIXME: we leak the old list here - other threads might access it right now
* in gst_debug_logv. Another solution is to lock the mutex in gst_debug_logv,
* but that is waaay costly.
* It'd probably be clever to use some kind of RCU here, but I don't know
* anything about that.
*/
g_mutex_lock (&__log_func_mutex);
list = g_slist_copy (__log_functions);
__log_functions = g_slist_prepend (list, entry);
g_mutex_unlock (&__log_func_mutex);
if (gst_is_initialized ())
GST_DEBUG ("prepended log function %p (user data %p) to log functions",
func, user_data);
}
static gint
gst_debug_compare_log_function_by_func (gconstpointer entry, gconstpointer func)
{
gpointer entryfunc = (gpointer) (((LogFuncEntry *) entry)->func);
return (entryfunc < func) ? -1 : (entryfunc > func) ? 1 : 0;
}
static gint
gst_debug_compare_log_function_by_data (gconstpointer entry, gconstpointer data)
{
gpointer entrydata = ((LogFuncEntry *) entry)->user_data;
return (entrydata < data) ? -1 : (entrydata > data) ? 1 : 0;
}
static guint
gst_debug_remove_with_compare_func (GCompareFunc func, gpointer data)
{
GSList *found;
GSList *new, *cleanup = NULL;
guint removals = 0;
g_mutex_lock (&__log_func_mutex);
new = __log_functions;
cleanup = NULL;
while ((found = g_slist_find_custom (new, data, func))) {
if (new == __log_functions) {
/* make a copy when we have the first hit, so that we modify the copy and
* make that the new list later */
new = g_slist_copy (new);
continue;
}
cleanup = g_slist_prepend (cleanup, found->data);
new = g_slist_delete_link (new, found);
removals++;
}
/* FIXME: We leak the old list here. See _add_log_function for why. */
__log_functions = new;
g_mutex_unlock (&__log_func_mutex);
while (cleanup) {
LogFuncEntry *entry = cleanup->data;
if (entry->notify)
entry->notify (entry->user_data);
g_slice_free (LogFuncEntry, entry);
cleanup = g_slist_delete_link (cleanup, cleanup);
}
return removals;
}
/**
* gst_debug_remove_log_function:
* @func: (scope call) (allow-none): the log function to remove, or %NULL to
* remove the default log function
*
* Removes all registered instances of the given logging functions.
*
* Returns: How many instances of the function were removed
*/
guint
gst_debug_remove_log_function (GstLogFunction func)
{
guint removals;
if (func == NULL)
func = gst_debug_log_default;
removals =
gst_debug_remove_with_compare_func
(gst_debug_compare_log_function_by_func, (gpointer) func);
if (gst_is_initialized ()) {
GST_DEBUG ("removed log function %p %d times from log function list", func,
removals);
} else {
/* If the default log function is removed before gst_init() was called,
* set a flag so we don't add it in gst_init() later */
if (func == gst_debug_log_default) {
add_default_log_func = FALSE;
++removals;
}
}
return removals;
}
/**
* gst_debug_remove_log_function_by_data:
* @data: user data of the log function to remove
*
* Removes all registered instances of log functions with the given user data.
*
* Returns: How many instances of the function were removed
*/
guint
gst_debug_remove_log_function_by_data (gpointer data)
{
guint removals;
removals =
gst_debug_remove_with_compare_func
(gst_debug_compare_log_function_by_data, data);
if (gst_is_initialized ())
GST_DEBUG
("removed %d log functions with user data %p from log function list",
removals, data);
return removals;
}
/**
* gst_debug_set_colored:
* @colored: Whether to use colored output or not
*
* Sets or unsets the use of coloured debugging output.
* Same as gst_debug_set_color_mode () with the argument being
* being GST_DEBUG_COLOR_MODE_ON or GST_DEBUG_COLOR_MODE_OFF.
*
* This function may be called before gst_init().
*/
void
gst_debug_set_colored (gboolean colored)
{
GstDebugColorMode new_mode;
new_mode = colored ? GST_DEBUG_COLOR_MODE_ON : GST_DEBUG_COLOR_MODE_OFF;
g_atomic_int_set (&__use_color, (gint) new_mode);
}
/**
* gst_debug_set_color_mode:
* @mode: The coloring mode for debug output. See @GstDebugColorMode.
*
* Changes the coloring mode for debug output.
*
* This function may be called before gst_init().
*
* Since: 1.2
*/
void
gst_debug_set_color_mode (GstDebugColorMode mode)
{
g_atomic_int_set (&__use_color, mode);
}
/**
* gst_debug_set_color_mode_from_string:
* @mode: The coloring mode for debug output. One of the following:
* "on", "auto", "off", "disable", "unix".
*
* Changes the coloring mode for debug output.
*
* This function may be called before gst_init().
*
* Since: 1.2
*/
void
gst_debug_set_color_mode_from_string (const gchar * mode)
{
if ((strcmp (mode, "on") == 0) || (strcmp (mode, "auto") == 0))
gst_debug_set_color_mode (GST_DEBUG_COLOR_MODE_ON);
else if ((strcmp (mode, "off") == 0) || (strcmp (mode, "disable") == 0))
gst_debug_set_color_mode (GST_DEBUG_COLOR_MODE_OFF);
else if (strcmp (mode, "unix") == 0)
gst_debug_set_color_mode (GST_DEBUG_COLOR_MODE_UNIX);
}
/**
* gst_debug_is_colored:
*
* Checks if the debugging output should be colored.
*
* Returns: %TRUE, if the debug output should be colored.
*/
gboolean
gst_debug_is_colored (void)
{
GstDebugColorMode mode = g_atomic_int_get (&__use_color);
return (mode == GST_DEBUG_COLOR_MODE_UNIX || mode == GST_DEBUG_COLOR_MODE_ON);
}
/**
* gst_debug_get_color_mode:
*
* Changes the coloring mode for debug output.
*
* Returns: see @GstDebugColorMode for possible values.
*
* Since: 1.2
*/
GstDebugColorMode
gst_debug_get_color_mode (void)
{
return g_atomic_int_get (&__use_color);
}
/**
* gst_debug_set_active:
* @active: Whether to use debugging output or not
*
* If activated, debugging messages are sent to the debugging
* handlers.
* It makes sense to deactivate it for speed issues.
* > This function is not threadsafe. It makes sense to only call it
* during initialization.
*/
void
gst_debug_set_active (gboolean active)
{
_gst_debug_enabled = active;
if (active)
_gst_debug_min = GST_LEVEL_COUNT;
else
_gst_debug_min = GST_LEVEL_NONE;
}
/**
* gst_debug_is_active:
*
* Checks if debugging output is activated.
*
* Returns: %TRUE, if debugging is activated
*/
gboolean
gst_debug_is_active (void)
{
return _gst_debug_enabled;
}
/**
* gst_debug_set_default_threshold:
* @level: level to set
*
* Sets the default threshold to the given level and updates all categories to
* use this threshold.
*
* This function may be called before gst_init().
*/
void
gst_debug_set_default_threshold (GstDebugLevel level)
{
g_atomic_int_set (&__default_level, level);
gst_debug_reset_all_thresholds ();
}
/**
* gst_debug_get_default_threshold:
*
* Returns the default threshold that is used for new categories.
*
* Returns: the default threshold level
*/
GstDebugLevel
gst_debug_get_default_threshold (void)
{
return (GstDebugLevel) g_atomic_int_get (&__default_level);
}
static void
gst_debug_reset_threshold (gpointer category, gpointer unused)
{
GstDebugCategory *cat = (GstDebugCategory *) category;
GSList *walk;
g_mutex_lock (&__level_name_mutex);
walk = __level_name;
while (walk) {
LevelNameEntry *entry = walk->data;
walk = g_slist_next (walk);
if (g_pattern_match_string (entry->pat, cat->name)) {
if (gst_is_initialized ())
GST_LOG ("category %s matches pattern %p - gets set to level %d",
cat->name, entry->pat, entry->level);
gst_debug_category_set_threshold (cat, entry->level);
goto exit;
}
}
gst_debug_category_set_threshold (cat, gst_debug_get_default_threshold ());
exit:
g_mutex_unlock (&__level_name_mutex);
}
static void
gst_debug_reset_all_thresholds (void)
{
g_mutex_lock (&__cat_mutex);
g_slist_foreach (__categories, gst_debug_reset_threshold, NULL);
g_mutex_unlock (&__cat_mutex);
}
static void
for_each_threshold_by_entry (gpointer data, gpointer user_data)
{
GstDebugCategory *cat = (GstDebugCategory *) data;
LevelNameEntry *entry = (LevelNameEntry *) user_data;
if (g_pattern_match_string (entry->pat, cat->name)) {
if (gst_is_initialized ())
GST_TRACE ("category %s matches pattern %p - gets set to level %d",
cat->name, entry->pat, entry->level);
gst_debug_category_set_threshold (cat, entry->level);
}
}
/**
* gst_debug_set_threshold_for_name:
* @name: name of the categories to set
* @level: level to set them to
*
* Sets all categories which match the given glob style pattern to the given
* level.
*/
void
gst_debug_set_threshold_for_name (const gchar * name, GstDebugLevel level)
{
GPatternSpec *pat;
LevelNameEntry *entry;
g_return_if_fail (name != NULL);
pat = g_pattern_spec_new (name);
entry = g_slice_new (LevelNameEntry);
entry->pat = pat;
entry->level = level;
g_mutex_lock (&__level_name_mutex);
__level_name = g_slist_prepend (__level_name, entry);
g_mutex_unlock (&__level_name_mutex);
g_mutex_lock (&__cat_mutex);
g_slist_foreach (__categories, for_each_threshold_by_entry, entry);
g_mutex_unlock (&__cat_mutex);
}
/**
* gst_debug_unset_threshold_for_name:
* @name: name of the categories to set
*
* Resets all categories with the given name back to the default level.
*/
void
gst_debug_unset_threshold_for_name (const gchar * name)
{
GSList *walk;
GPatternSpec *pat;
g_return_if_fail (name != NULL);
pat = g_pattern_spec_new (name);
g_mutex_lock (&__level_name_mutex);
walk = __level_name;
/* improve this if you want, it's mighty slow */
while (walk) {
LevelNameEntry *entry = walk->data;
if (g_pattern_spec_equal (entry->pat, pat)) {
__level_name = g_slist_remove_link (__level_name, walk);
g_pattern_spec_free (entry->pat);
g_slice_free (LevelNameEntry, entry);
g_slist_free_1 (walk);
walk = __level_name;
} else {
walk = g_slist_next (walk);
}
}
g_mutex_unlock (&__level_name_mutex);
g_pattern_spec_free (pat);
gst_debug_reset_all_thresholds ();
}
static void
gst_debug_apply_patterns_to_category (GstDebugCategory * cat)
{
GSList *l;
g_mutex_lock (&__level_name_mutex);
for (l = __level_name; l != NULL; l = l->next) {
for_each_threshold_by_entry (cat, (LevelNameEntry *) l->data);
}
g_mutex_unlock (&__level_name_mutex);
}
GstDebugCategory *
_gst_debug_category_new (const gchar * name, guint color,
const gchar * description)
{
GstDebugCategory *cat, *catfound;
g_return_val_if_fail (name != NULL, NULL);
cat = g_slice_new (GstDebugCategory);
cat->name = g_strdup (name);
cat->color = color;
if (description != NULL) {
cat->description = g_strdup (description);
} else {
cat->description = g_strdup ("no description");
}
g_atomic_int_set (&cat->threshold, 0);
gst_debug_reset_threshold (cat, NULL);
/* add to category list */
g_mutex_lock (&__cat_mutex);
catfound = _gst_debug_get_category_locked (name);
if (catfound) {
g_free ((gpointer) cat->name);
g_free ((gpointer) cat->description);
g_slice_free (GstDebugCategory, cat);
cat = catfound;
} else {
__categories = g_slist_prepend (__categories, cat);
}
g_mutex_unlock (&__cat_mutex);
/* ensure the filter is applied to categories registered after _debug_init */
gst_debug_apply_patterns_to_category (cat);
return cat;
}
/**
* gst_debug_category_free:
* @category: #GstDebugCategory to free.
*
* Removes and frees the category and all associated resources.
*/
void
gst_debug_category_free (GstDebugCategory * category)
{
if (category == NULL)
return;
/* remove from category list */
g_mutex_lock (&__cat_mutex);
__categories = g_slist_remove (__categories, category);
g_mutex_unlock (&__cat_mutex);
g_free ((gpointer) category->name);
g_free ((gpointer) category->description);
g_slice_free (GstDebugCategory, category);
}
/**
* gst_debug_category_set_threshold:
* @category: a #GstDebugCategory to set threshold of.
* @level: the #GstDebugLevel threshold to set.
*
* Sets the threshold of the category to the given level. Debug information will
* only be output if the threshold is lower or equal to the level of the
* debugging message.
* > Do not use this function in production code, because other functions may
* > change the threshold of categories as side effect. It is however a nice
* > function to use when debugging (even from gdb).
*/
void
gst_debug_category_set_threshold (GstDebugCategory * category,
GstDebugLevel level)
{
g_return_if_fail (category != NULL);
if (level > _gst_debug_min) {
_gst_debug_enabled = TRUE;
_gst_debug_min = level;
}
g_atomic_int_set (&category->threshold, level);
}
/**
* gst_debug_category_reset_threshold:
* @category: a #GstDebugCategory to reset threshold of.
*
* Resets the threshold of the category to the default level. Debug information
* will only be output if the threshold is lower or equal to the level of the
* debugging message.
* Use this function to set the threshold back to where it was after using
* gst_debug_category_set_threshold().
*/
void
gst_debug_category_reset_threshold (GstDebugCategory * category)
{
gst_debug_reset_threshold (category, NULL);
}
/**
* gst_debug_category_get_threshold:
* @category: a #GstDebugCategory to get threshold of.
*
* Returns the threshold of a #GstDebugCategory.
*
* Returns: the #GstDebugLevel that is used as threshold.
*/
GstDebugLevel
gst_debug_category_get_threshold (GstDebugCategory * category)
{
return (GstDebugLevel) g_atomic_int_get (&category->threshold);
}
/**
* gst_debug_category_get_name:
* @category: a #GstDebugCategory to get name of.
*
* Returns the name of a debug category.
*
* Returns: the name of the category.
*/
const gchar *
gst_debug_category_get_name (GstDebugCategory * category)
{
return category->name;
}
/**
* gst_debug_category_get_color:
* @category: a #GstDebugCategory to get the color of.
*
* Returns the color of a debug category used when printing output in this
* category.
*
* Returns: the color of the category.
*/
guint
gst_debug_category_get_color (GstDebugCategory * category)
{
return category->color;
}
/**
* gst_debug_category_get_description:
* @category: a #GstDebugCategory to get the description of.
*
* Returns the description of a debug category.
*
* Returns: the description of the category.
*/
const gchar *
gst_debug_category_get_description (GstDebugCategory * category)
{
return category->description;
}
/**
* gst_debug_get_all_categories:
*
* Returns a snapshot of a all categories that are currently in use . This list
* may change anytime.
* The caller has to free the list after use.
*
* Returns: (transfer container) (element-type Gst.DebugCategory): the list of
* debug categories
*/
GSList *
gst_debug_get_all_categories (void)
{
GSList *ret;
g_mutex_lock (&__cat_mutex);
ret = g_slist_copy (__categories);
g_mutex_unlock (&__cat_mutex);
return ret;
}
static GstDebugCategory *
_gst_debug_get_category_locked (const gchar * name)
{
GstDebugCategory *ret = NULL;
GSList *node;
for (node = __categories; node; node = g_slist_next (node)) {
ret = (GstDebugCategory *) node->data;
if (!strcmp (name, ret->name)) {
return ret;
}
}
return NULL;
}
GstDebugCategory *
_gst_debug_get_category (const gchar * name)
{
GstDebugCategory *ret;
g_mutex_lock (&__cat_mutex);
ret = _gst_debug_get_category_locked (name);
g_mutex_unlock (&__cat_mutex);
return ret;
}
static gboolean
parse_debug_category (gchar * str, const gchar ** category)
{
if (!str)
return FALSE;
/* works in place */
g_strstrip (str);
if (str[0] != '\0') {
*category = str;
return TRUE;
}
return FALSE;
}
static gboolean
parse_debug_level (gchar * str, GstDebugLevel * level)
{
if (!str)
return FALSE;
/* works in place */
g_strstrip (str);
if (g_ascii_isdigit (str[0])) {
unsigned long l;
char *endptr;
l = strtoul (str, &endptr, 10);
if (endptr > str && endptr[0] == 0) {
*level = (GstDebugLevel) l;
} else {
return FALSE;
}
} else if (strcmp (str, "ERROR") == 0) {
*level = GST_LEVEL_ERROR;
} else if (strncmp (str, "WARN", 4) == 0) {
*level = GST_LEVEL_WARNING;
} else if (strcmp (str, "FIXME") == 0) {
*level = GST_LEVEL_FIXME;
} else if (strcmp (str, "INFO") == 0) {
*level = GST_LEVEL_INFO;
} else if (strcmp (str, "DEBUG") == 0) {
*level = GST_LEVEL_DEBUG;
} else if (strcmp (str, "LOG") == 0) {
*level = GST_LEVEL_LOG;
} else if (strcmp (str, "TRACE") == 0) {
*level = GST_LEVEL_TRACE;
} else if (strcmp (str, "MEMDUMP") == 0) {
*level = GST_LEVEL_MEMDUMP;
} else
return FALSE;
return TRUE;
}
/**
* gst_debug_set_threshold_from_string:
* @list: comma-separated list of "category:level" pairs to be used
* as debug logging levels
* @reset: %TRUE to clear all previously-set debug levels before setting
* new thresholds
* %FALSE if adding the threshold described by @list to the one already set.
*
* Sets the debug logging wanted in the same form as with the GST_DEBUG
* environment variable. You can use wildcards such as '*', but note that
* the order matters when you use wild cards, e.g. "foosrc:6,*src:3,*:2" sets
* everything to log level 2.
*
* Since: 1.2
*/
void
gst_debug_set_threshold_from_string (const gchar * list, gboolean reset)
{
gchar **split;
gchar **walk;
g_assert (list);
if (reset)
gst_debug_set_default_threshold (GST_LEVEL_DEFAULT);
split = g_strsplit (list, ",", 0);
for (walk = split; *walk; walk++) {
if (strchr (*walk, ':')) {
gchar **values = g_strsplit (*walk, ":", 2);
if (values[0] && values[1]) {
GstDebugLevel level;
const gchar *category;
if (parse_debug_category (values[0], &category)
&& parse_debug_level (values[1], &level)) {
gst_debug_set_threshold_for_name (category, level);
/* bump min-level anyway to allow the category to be registered in the
* future still */
if (level > _gst_debug_min) {
_gst_debug_min = level;
}
}
}
g_strfreev (values);
} else {
GstDebugLevel level;
if (parse_debug_level (*walk, &level))
gst_debug_set_default_threshold (level);
}
}
g_strfreev (split);
}
/*** FUNCTION POINTERS ********************************************************/
static GHashTable *__gst_function_pointers; /* NULL */
static GMutex __dbg_functions_mutex;
/* This function MUST NOT return NULL */
const gchar *
_gst_debug_nameof_funcptr (GstDebugFuncPtr func)
{
gchar *ptrname;
#ifdef HAVE_DLADDR
Dl_info dl_info;
#endif
if (G_UNLIKELY (func == NULL))
return "(NULL)";
g_mutex_lock (&__dbg_functions_mutex);
if (G_LIKELY (__gst_function_pointers)) {
ptrname = g_hash_table_lookup (__gst_function_pointers, (gpointer) func);
g_mutex_unlock (&__dbg_functions_mutex);
if (G_LIKELY (ptrname))
return ptrname;
} else {
g_mutex_unlock (&__dbg_functions_mutex);
}
/* we need to create an entry in the hash table for this one so we don't leak
* the name */
#ifdef HAVE_DLADDR
if (dladdr ((gpointer) func, &dl_info) && dl_info.dli_sname) {
gchar *name = g_strdup (dl_info.dli_sname);
_gst_debug_register_funcptr (func, name);
return name;
} else
#endif
{
gchar *name = g_strdup_printf ("%p", (gpointer) func);
_gst_debug_register_funcptr (func, name);
return name;
}
}
void
_gst_debug_register_funcptr (GstDebugFuncPtr func, const gchar * ptrname)
{
gpointer ptr = (gpointer) func;
g_mutex_lock (&__dbg_functions_mutex);
if (!__gst_function_pointers)
__gst_function_pointers = g_hash_table_new (g_direct_hash, g_direct_equal);
if (!g_hash_table_lookup (__gst_function_pointers, ptr))
g_hash_table_insert (__gst_function_pointers, ptr, (gpointer) ptrname);
g_mutex_unlock (&__dbg_functions_mutex);
}
static void
gst_info_dump_mem_line (gchar * linebuf, gsize linebuf_size,
const guint8 * mem, gsize mem_offset, gsize mem_size)
{
gchar hexstr[50], ascstr[18], digitstr[4];
if (mem_size > 16)
mem_size = 16;
hexstr[0] = '\0';
ascstr[0] = '\0';
if (mem != NULL) {
guint i = 0;
mem += mem_offset;
while (i < mem_size) {
ascstr[i] = (g_ascii_isprint (mem[i])) ? mem[i] : '.';
g_snprintf (digitstr, sizeof (digitstr), "%02x ", mem[i]);
g_strlcat (hexstr, digitstr, sizeof (hexstr));
++i;
}
ascstr[i] = '\0';
}
g_snprintf (linebuf, linebuf_size, "%08x: %-48.48s %-16.16s",
(guint) mem_offset, hexstr, ascstr);
}
void
_gst_debug_dump_mem (GstDebugCategory * cat, const gchar * file,
const gchar * func, gint line, GObject * obj, const gchar * msg,
const guint8 * data, guint length)
{
guint off = 0;
gst_debug_log ((cat), GST_LEVEL_MEMDUMP, file, func, line, obj, "--------"
"-------------------------------------------------------------------");
if (msg != NULL && *msg != '\0') {
gst_debug_log ((cat), GST_LEVEL_MEMDUMP, file, func, line, obj, "%s", msg);
}
while (off < length) {
gchar buf[128];
/* gst_info_dump_mem_line will process 16 bytes at most */
gst_info_dump_mem_line (buf, sizeof (buf), data, off, length - off);
gst_debug_log (cat, GST_LEVEL_MEMDUMP, file, func, line, obj, "%s", buf);
off += 16;
}
gst_debug_log ((cat), GST_LEVEL_MEMDUMP, file, func, line, obj, "--------"
"-------------------------------------------------------------------");
}
#else /* !GST_DISABLE_GST_DEBUG */
#ifndef GST_REMOVE_DISABLED
GstDebugCategory *
_gst_debug_category_new (const gchar * name, guint color,
const gchar * description)
{
return NULL;
}
void
_gst_debug_register_funcptr (GstDebugFuncPtr func, const gchar * ptrname)
{
}
/* This function MUST NOT return NULL */
const gchar *
_gst_debug_nameof_funcptr (GstDebugFuncPtr func)
{
return "(NULL)";
}
void
gst_debug_log (GstDebugCategory * category, GstDebugLevel level,
const gchar * file, const gchar * function, gint line,
GObject * object, const gchar * format, ...)
{
}
void
gst_debug_log_valist (GstDebugCategory * category, GstDebugLevel level,
const gchar * file, const gchar * function, gint line,
GObject * object, const gchar * format, va_list args)
{
}
const gchar *
gst_debug_message_get (GstDebugMessage * message)
{
return "";
}
void
gst_debug_log_default (GstDebugCategory * category, GstDebugLevel level,
const gchar * file, const gchar * function, gint line,
GObject * object, GstDebugMessage * message, gpointer unused)
{
}
const gchar *
gst_debug_level_get_name (GstDebugLevel level)
{
return "NONE";
}
void
gst_debug_add_log_function (GstLogFunction func, gpointer user_data,
GDestroyNotify notify)
{
}
guint
gst_debug_remove_log_function (GstLogFunction func)
{
return 0;
}
guint
gst_debug_remove_log_function_by_data (gpointer data)
{
return 0;
}
void
gst_debug_set_active (gboolean active)
{
}
gboolean
gst_debug_is_active (void)
{
return FALSE;
}
void
gst_debug_set_colored (gboolean colored)
{
}
void
gst_debug_set_color_mode (GstDebugColorMode mode)
{
}
void
gst_debug_set_color_mode_from_string (const gchar * str)
{
}
gboolean
gst_debug_is_colored (void)
{
return FALSE;
}
GstDebugColorMode
gst_debug_get_color_mode (void)
{
return GST_DEBUG_COLOR_MODE_OFF;
}
void
gst_debug_set_threshold_from_string (const gchar * list, gboolean reset)
{
}
void
gst_debug_set_default_threshold (GstDebugLevel level)
{
}
GstDebugLevel
gst_debug_get_default_threshold (void)
{
return GST_LEVEL_NONE;
}
void
gst_debug_set_threshold_for_name (const gchar * name, GstDebugLevel level)
{
}
void
gst_debug_unset_threshold_for_name (const gchar * name)
{
}
void
gst_debug_category_free (GstDebugCategory * category)
{
}
void
gst_debug_category_set_threshold (GstDebugCategory * category,
GstDebugLevel level)
{
}
void
gst_debug_category_reset_threshold (GstDebugCategory * category)
{
}
GstDebugLevel
gst_debug_category_get_threshold (GstDebugCategory * category)
{
return GST_LEVEL_NONE;
}
const gchar *
gst_debug_category_get_name (GstDebugCategory * category)
{
return "";
}
guint
gst_debug_category_get_color (GstDebugCategory * category)
{
return 0;
}
const gchar *
gst_debug_category_get_description (GstDebugCategory * category)
{
return "";
}
GSList *
gst_debug_get_all_categories (void)
{
return NULL;
}
GstDebugCategory *
_gst_debug_get_category (const gchar * name)
{
return NULL;
}
gchar *
gst_debug_construct_term_color (guint colorinfo)
{
return g_strdup ("00");
}
gint
gst_debug_construct_win_color (guint colorinfo)
{
return 0;
}
gboolean
_priv_gst_in_valgrind (void)
{
return FALSE;
}
void
_gst_debug_dump_mem (GstDebugCategory * cat, const gchar * file,
const gchar * func, gint line, GObject * obj, const gchar * msg,
const guint8 * data, guint length)
{
}
#endif /* GST_REMOVE_DISABLED */
#endif /* GST_DISABLE_GST_DEBUG */
/* Need this for _gst_element_error_printf even if GST_REMOVE_DISABLED is set:
* fallback function that cleans up the format string and replaces all pointer
* extension formats with plain %p. */
#ifdef GST_DISABLE_GST_DEBUG
int
__gst_info_fallback_vasprintf (char **result, char const *format, va_list args)
{
gchar *clean_format, *c;
gsize len;
if (format == NULL)
return -1;
clean_format = g_strdup (format);
c = clean_format;
while ((c = strstr (c, "%p\a"))) {
if (c[3] < 'A' || c[3] > 'Z') {
c += 3;
continue;
}
len = strlen (c + 4);
memmove (c + 2, c + 4, len + 1);
c += 2;
}
while ((c = strstr (clean_format, "%P"))) /* old GST_PTR_FORMAT */
c[1] = 'p';
while ((c = strstr (clean_format, "%Q"))) /* old GST_SEGMENT_FORMAT */
c[1] = 'p';
len = g_vasprintf (result, clean_format, args);
g_free (clean_format);
if (*result == NULL)
return -1;
return len;
}
#endif
/**
* gst_info_vasprintf:
* @result: (out): the resulting string
* @format: a printf style format string
* @args: the va_list of printf arguments for @format
*
* Allocates and fills a string large enough (including the terminating null
* byte) to hold the specified printf style @format and @args.
*
* This function deals with the GStreamer specific printf specifiers
* #GST_PTR_FORMAT and #GST_SEGMENT_FORMAT. If you do not have these specifiers
* in your @format string, you do not need to use this function and can use
* alternatives such as g_vasprintf().
*
* Free @result with g_free().
*
* Returns: the length of the string allocated into @result or -1 on any error
*
* Since: 1.8
*/
gint
gst_info_vasprintf (gchar ** result, const gchar * format, va_list args)
{
/* This will fallback to __gst_info_fallback_vasprintf() via a #define in
* gst_private.h if the debug system is disabled which will remove the gst
* specific printf format specifiers */
return __gst_vasprintf (result, format, args);
}
/**
* gst_info_strdup_vprintf:
* @format: a printf style format string
* @args: the va_list of printf arguments for @format
*
* Allocates, fills and returns a null terminated string from the printf style
* @format string and @args.
*
* See gst_info_vasprintf() for when this function is required.
*
* Free with g_free().
*
* Returns: (nullable): a newly allocated null terminated string or %NULL on any error
*
* Since: 1.8
*/
gchar *
gst_info_strdup_vprintf (const gchar * format, va_list args)
{
gchar *ret;
if (gst_info_vasprintf (&ret, format, args) < 0)
ret = NULL;
return ret;
}
/**
* gst_info_strdup_printf:
* @format: a printf style format string
* @...: the printf arguments for @format
*
* Allocates, fills and returns a 0-terminated string from the printf style
* @format string and corresponding arguments.
*
* See gst_info_vasprintf() for when this function is required.
*
* Free with g_free().
*
* Returns: (nullable): a newly allocated null terminated string or %NULL on any error
*
* Since: 1.8
*/
gchar *
gst_info_strdup_printf (const gchar * format, ...)
{
gchar *ret;
va_list args;
va_start (args, format);
ret = gst_info_strdup_vprintf (format, args);
va_end (args);
return ret;
}
/**
* gst_print:
* @format: a printf style format string
* @...: the printf arguments for @format
*
* Outputs a formatted message via the GLib print handler. The default print
* handler simply outputs the message to stdout.
*
* This function will not append a new-line character at the end, unlike
* gst_println() which will.
*
* All strings must be in ASCII or UTF-8 encoding.
*
* This function differs from g_print() in that it supports all the additional
* printf specifiers that are supported by GStreamer's debug logging system,
* such as #GST_PTR_FORMAT and #GST_SEGMENT_FORMAT.
*
* This function is primarily for printing debug output.
*
* Since: 1.12
*/
void
gst_print (const gchar * format, ...)
{
va_list args;
gchar *str;
va_start (args, format);
str = gst_info_strdup_vprintf (format, args);
va_end (args);
g_print ("%s", str);
g_free (str);
}
/**
* gst_println:
* @format: a printf style format string
* @...: the printf arguments for @format
*
* Outputs a formatted message via the GLib print handler. The default print
* handler simply outputs the message to stdout.
*
* This function will append a new-line character at the end, unlike
* gst_print() which will not.
*
* All strings must be in ASCII or UTF-8 encoding.
*
* This function differs from g_print() in that it supports all the additional
* printf specifiers that are supported by GStreamer's debug logging system,
* such as #GST_PTR_FORMAT and #GST_SEGMENT_FORMAT.
*
* This function is primarily for printing debug output.
*
* Since: 1.12
*/
void
gst_println (const gchar * format, ...)
{
va_list args;
gchar *str;
va_start (args, format);
str = gst_info_strdup_vprintf (format, args);
va_end (args);
g_print ("%s\n", str);
g_free (str);
}
/**
* gst_printerr:
* @format: a printf style format string
* @...: the printf arguments for @format
*
* Outputs a formatted message via the GLib error message handler. The default
* handler simply outputs the message to stderr.
*
* This function will not append a new-line character at the end, unlike
* gst_printerrln() which will.
*
* All strings must be in ASCII or UTF-8 encoding.
*
* This function differs from g_printerr() in that it supports the additional
* printf specifiers that are supported by GStreamer's debug logging system,
* such as #GST_PTR_FORMAT and #GST_SEGMENT_FORMAT.
*
* This function is primarily for printing debug output.
*
* Since: 1.12
*/
void
gst_printerr (const gchar * format, ...)
{
va_list args;
gchar *str;
va_start (args, format);
str = gst_info_strdup_vprintf (format, args);
va_end (args);
g_printerr ("%s", str);
g_free (str);
}
/**
* gst_printerrln:
* @format: a printf style format string
* @...: the printf arguments for @format
*
* Outputs a formatted message via the GLib error message handler. The default
* handler simply outputs the message to stderr.
*
* This function will append a new-line character at the end, unlike
* gst_printerr() which will not.
*
* All strings must be in ASCII or UTF-8 encoding.
*
* This function differs from g_printerr() in that it supports the additional
* printf specifiers that are supported by GStreamer's debug logging system,
* such as #GST_PTR_FORMAT and #GST_SEGMENT_FORMAT.
*
* This function is primarily for printing debug output.
*
* Since: 1.12
*/
void
gst_printerrln (const gchar * format, ...)
{
va_list args;
gchar *str;
va_start (args, format);
str = gst_info_strdup_vprintf (format, args);
va_end (args);
g_printerr ("%s\n", str);
g_free (str);
}
#ifdef HAVE_UNWIND
#ifdef HAVE_DW
static gboolean
append_debug_info (GString * trace, Dwfl * dwfl, const void *ip)
{
Dwfl_Line *line;
Dwarf_Addr addr;
Dwfl_Module *module;
const gchar *function_name;
if (dwfl_linux_proc_report (dwfl, getpid ()) != 0)
return FALSE;
if (dwfl_report_end (dwfl, NULL, NULL))
return FALSE;
addr = (uintptr_t) ip;
module = dwfl_addrmodule (dwfl, addr);
function_name = dwfl_module_addrname (module, addr);
g_string_append_printf (trace, "%s (", function_name ? function_name : "??");
line = dwfl_getsrc (dwfl, addr);
if (line != NULL) {
gint nline;
Dwarf_Addr addr;
const gchar *filename = dwfl_lineinfo (line, &addr,
&nline, NULL, NULL, NULL);
g_string_append_printf (trace, "%s:%d", strrchr (filename,
G_DIR_SEPARATOR) + 1, nline);
} else {
const gchar *eflfile = NULL;
dwfl_module_info (module, NULL, NULL, NULL, NULL, NULL, &eflfile, NULL);
g_string_append_printf (trace, "%s:%p", eflfile ? eflfile : "??", ip);
}
return TRUE;
}
#endif /* HAVE_DW */
static gchar *
generate_unwind_trace (GstStackTraceFlags flags)
{
gint unret;
unw_context_t uc;
unw_cursor_t cursor;
gboolean use_libunwind = TRUE;
GString *trace = g_string_new (NULL);
#ifdef HAVE_DW
Dwfl *dwfl = NULL;
Dwfl_Callbacks callbacks = {
.find_elf = dwfl_linux_proc_find_elf,
.find_debuginfo = dwfl_standard_find_debuginfo,
};
if ((flags & GST_STACK_TRACE_SHOW_FULL))
dwfl = dwfl_begin (&callbacks);
#endif /* HAVE_DW */
unret = unw_getcontext (&uc);
if (unret) {
GST_DEBUG ("Could not get libunwind context (%d)", unret);
goto done;
}
unret = unw_init_local (&cursor, &uc);
if (unret) {
GST_DEBUG ("Could not init libunwind context (%d)", unret);
goto done;
}
while (unw_step (&cursor) > 0) {
#ifdef HAVE_DW
if (dwfl) {
unw_word_t ip;
unret = unw_get_reg (&cursor, UNW_REG_IP, &ip);
if (unret) {
GST_DEBUG ("libunwind could read frame info (%d)", unret);
goto done;
}
if (append_debug_info (trace, dwfl, (void *) (ip - 4))) {
use_libunwind = FALSE;
g_string_append (trace, ")\n");
}
}
#endif /* HAVE_DW */
if (use_libunwind) {
char name[32];
unw_word_t offset = 0;
unw_get_proc_name (&cursor, name, sizeof (name), &offset);
g_string_append_printf (trace, "%s (0x%" G_GSIZE_FORMAT ")\n", name,
(gsize) offset);
}
}
done:
#ifdef HAVE_DW
if (dwfl)
dwfl_end (dwfl);
#endif
return g_string_free (trace, FALSE);
}
#endif /* HAVE_UNWIND */
#ifdef HAVE_BACKTRACE
static gchar *
generate_backtrace_trace (void)
{
int j, nptrs;
void *buffer[BT_BUF_SIZE];
char **strings;
GString *trace;
trace = g_string_new (NULL);
nptrs = backtrace (buffer, BT_BUF_SIZE);
strings = backtrace_symbols (buffer, nptrs);
if (!strings)
return NULL;
for (j = 0; j < nptrs; j++)
g_string_append_printf (trace, "%s\n", strings[j]);
free (strings);
return g_string_free (trace, FALSE);
}
#else
#define generate_backtrace_trace() NULL
#endif /* HAVE_BACKTRACE */
/**
* gst_debug_get_stack_trace:
* @flags: A set of #GstStackTraceFlags to determine how the stack
* trace should look like. Pass 0 to retrieve a minimal backtrace.
*
* Returns: (nullable): a stack trace, if libunwind or glibc backtrace are
* present, else %NULL.
*
* Since: 1.12
*/
gchar *
gst_debug_get_stack_trace (GstStackTraceFlags flags)
{
gchar *trace = NULL;
#ifdef HAVE_BACKTRACE
gboolean have_backtrace = TRUE;
#else
gboolean have_backtrace = FALSE;
#endif
#ifdef HAVE_UNWIND
if ((flags & GST_STACK_TRACE_SHOW_FULL) || !have_backtrace)
trace = generate_unwind_trace (flags);
#endif /* HAVE_UNWIND */
if (trace)
return trace;
else if (have_backtrace)
return generate_backtrace_trace ();
return NULL;
}
/**
* gst_debug_print_stack_trace:
*
* If libunwind or glibc backtrace are present
* a stack trace is printed.
*/
void
gst_debug_print_stack_trace (void)
{
gchar *trace = gst_debug_get_stack_trace (GST_STACK_TRACE_SHOW_FULL);
if (trace)
g_print ("%s\n", trace);
g_free (trace);
}
#ifndef GST_DISABLE_GST_DEBUG
typedef struct
{
guint max_size_per_thread;
guint thread_timeout;
GQueue threads;
GHashTable *thread_index;
} GstRingBufferLogger;
typedef struct
{
GList *link;
gint64 last_use;
GThread *thread;
GQueue log;
gsize log_size;
} GstRingBufferLog;
G_LOCK_DEFINE_STATIC (ring_buffer_logger);
static GstRingBufferLogger *ring_buffer_logger = NULL;
static void
gst_ring_buffer_logger_log (GstDebugCategory * category,
GstDebugLevel level,
const gchar * file,
const gchar * function,
gint line, GObject * object, GstDebugMessage * message, gpointer user_data)
{
GstRingBufferLogger *logger = user_data;
gint pid;
GThread *thread;
GstClockTime elapsed;
gchar *obj = NULL;
gchar c;
gchar *output;
gsize output_len;
GstRingBufferLog *log;
gint64 now = g_get_monotonic_time ();
const gchar *message_str = gst_debug_message_get (message);
G_LOCK (ring_buffer_logger);
if (logger->thread_timeout > 0) {
/* Remove all threads that saw no output since thread_timeout seconds.
* By construction these are all at the tail of the queue, and the queue
* is ordered by last use, so we just need to look at the tail.
*/
while (logger->threads.tail) {
log = logger->threads.tail->data;
if (log->last_use + logger->thread_timeout * G_USEC_PER_SEC >= now)
break;
g_hash_table_remove (logger->thread_index, log->thread);
while ((output = g_queue_pop_head (&log->log)))
g_free (output);
g_free (log);
g_queue_pop_tail (&logger->threads);
}
}
/* Get logger for this thread, and put it back at the
* head of the threads queue */
thread = g_thread_self ();
log = g_hash_table_lookup (logger->thread_index, thread);
if (!log) {
log = g_new0 (GstRingBufferLog, 1);
g_queue_init (&log->log);
log->log_size = 0;
g_queue_push_head (&logger->threads, log);
log->link = logger->threads.head;
log->thread = thread;
g_hash_table_insert (logger->thread_index, thread, log);
} else {
g_queue_unlink (&logger->threads, log->link);
g_queue_push_head_link (&logger->threads, log->link);
}
log->last_use = now;
/* __FILE__ might be a file name or an absolute path or a
* relative path, irrespective of the exact compiler used,
* in which case we want to shorten it to the filename for
* readability. */
c = file[0];
if (c == '.' || c == '/' || c == '\\' || (c != '\0' && file[1] == ':')) {
file = gst_path_basename (file);
}
pid = getpid ();
if (object) {
obj = gst_debug_print_object (object);
} else {
obj = (gchar *) "";
}
elapsed = GST_CLOCK_DIFF (_priv_gst_start_time, gst_util_get_timestamp ());
/* no color, all platforms */
#define PRINT_FMT " "PID_FMT" "PTR_FMT" %s "CAT_FMT" %s\n"
output =
g_strdup_printf ("%" GST_TIME_FORMAT PRINT_FMT, GST_TIME_ARGS (elapsed),
pid, thread, gst_debug_level_get_name (level),
gst_debug_category_get_name (category), file, line, function, obj,
message_str);
#undef PRINT_FMT
output_len = strlen (output);
if (output_len < logger->max_size_per_thread) {
gchar *buf;
/* While using a GQueue here is not the most efficient thing to do, we
* have to allocate a string for every output anyway and could just store
* that instead of copying it to an actual ringbuffer.
* Better than GQueue would be GstQueueArray, but that one is in
* libgstbase and we can't use it here. That one allocation will not make
* much of a difference anymore, considering the number of allocations
* needed to get to this point...
*/
while (log->log_size + output_len > logger->max_size_per_thread) {
buf = g_queue_pop_head (&log->log);
log->log_size -= strlen (buf);
g_free (buf);
}
g_queue_push_tail (&log->log, output);
log->log_size += output_len;
} else {
gchar *buf;
/* Can't really write anything as the line is bigger than the maximum
* allowed log size already, so just remove everything */
while ((buf = g_queue_pop_head (&log->log)))
g_free (buf);
g_free (output);
log->log_size = 0;
}
if (object != NULL)
g_free (obj);
G_UNLOCK (ring_buffer_logger);
}
/**
* gst_debug_ring_buffer_logger_get_logs:
*
* Fetches the current logs per thread from the ring buffer logger. See
* gst_debug_add_ring_buffer_logger() for details.
*
* Returns: (transfer full) (array zero-terminated): NULL-terminated array of
* strings with the debug output per thread
*
* Since: 1.14
*/
gchar **
gst_debug_ring_buffer_logger_get_logs (void)
{
gchar **logs, **tmp;
GList *l;
g_return_val_if_fail (ring_buffer_logger != NULL, NULL);
G_LOCK (ring_buffer_logger);
tmp = logs = g_new0 (gchar *, ring_buffer_logger->threads.length + 1);
for (l = ring_buffer_logger->threads.head; l; l = l->next) {
GstRingBufferLog *log = l->data;
GList *l;
gchar *p;
gsize len;
*tmp = p = g_new0 (gchar, log->log_size + 1);
for (l = log->log.head; l; l = l->next) {
len = strlen (l->data);
memcpy (p, l->data, len);
p += len;
}
tmp++;
}
G_UNLOCK (ring_buffer_logger);
return logs;
}
static void
gst_ring_buffer_logger_free (GstRingBufferLogger * logger)
{
G_LOCK (ring_buffer_logger);
if (ring_buffer_logger == logger) {
GstRingBufferLog *log;
while ((log = g_queue_pop_head (&logger->threads))) {
gchar *buf;
while ((buf = g_queue_pop_head (&log->log)))
g_free (buf);
g_free (log);
}
g_hash_table_unref (logger->thread_index);
g_free (logger);
ring_buffer_logger = NULL;
}
G_UNLOCK (ring_buffer_logger);
}
/**
* gst_debug_add_ring_buffer_logger:
* @max_size_per_thread: Maximum size of log per thread in bytes
* @thread_timeout: Timeout for threads in seconds
*
* Adds a memory ringbuffer based debug logger that stores up to
* @max_size_per_thread bytes of logs per thread and times out threads after
* @thread_timeout seconds of inactivity.
*
* Logs can be fetched with gst_debug_ring_buffer_logger_get_logs() and the
* logger can be removed again with gst_debug_remove_ring_buffer_logger().
* Only one logger at a time is possible.
*
* Since: 1.14
*/
void
gst_debug_add_ring_buffer_logger (guint max_size_per_thread,
guint thread_timeout)
{
GstRingBufferLogger *logger;
G_LOCK (ring_buffer_logger);
if (ring_buffer_logger) {
g_warn_if_reached ();
G_UNLOCK (ring_buffer_logger);
return;
}
logger = ring_buffer_logger = g_new0 (GstRingBufferLogger, 1);
logger->max_size_per_thread = max_size_per_thread;
logger->thread_timeout = thread_timeout;
logger->thread_index = g_hash_table_new (g_direct_hash, g_direct_equal);
g_queue_init (&logger->threads);
gst_debug_add_log_function (gst_ring_buffer_logger_log, logger,
(GDestroyNotify) gst_ring_buffer_logger_free);
G_UNLOCK (ring_buffer_logger);
}
/**
* gst_debug_remove_ring_buffer_logger:
*
* Removes any previously added ring buffer logger with
* gst_debug_add_ring_buffer_logger().
*
* Since: 1.14
*/
void
gst_debug_remove_ring_buffer_logger (void)
{
gst_debug_remove_log_function (gst_ring_buffer_logger_log);
}
#else /* GST_DISABLE_GST_DEBUG */
#ifndef GST_REMOVE_DISABLED
gchar **
gst_debug_ring_buffer_logger_get_logs (void)
{
return NULL;
}
void
gst_debug_add_ring_buffer_logger (guint max_size_per_thread,
guint thread_timeout)
{
}
void
gst_debug_remove_ring_buffer_logger (void)
{
}
#endif /* GST_REMOVE_DISABLED */
#endif /* GST_DISABLE_GST_DEBUG */
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