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authorWim Taymans <wim.taymans@gmail.com>2002-10-24 22:37:51 +0000
committerWim Taymans <wim.taymans@gmail.com>2002-10-24 22:37:51 +0000
commit1496394c0f4be1a718fb189846c6350cbd9e43da (patch)
tree7f839063fd206ad3db102a7a20c336d0c8423295 /ext/mplex/mjpeg_logging.cc
parent440801dd9e53284925575c2170b53bf947522414 (diff)
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First stab at porting mplex
Original commit message from CVS: First stab at porting mplex
Diffstat (limited to 'ext/mplex/mjpeg_logging.cc')
-rw-r--r--ext/mplex/mjpeg_logging.cc239
1 files changed, 239 insertions, 0 deletions
diff --git a/ext/mplex/mjpeg_logging.cc b/ext/mplex/mjpeg_logging.cc
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+/*
+ $Id$
+
+ Copyright (C) 2000 Herbert Valerio Riedel <hvr@gnu.org>
+
+ This program is free software; you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation; either version 2 of the License, or
+ (at your option) any later version.
+
+ This program 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 General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with this program; if not, write to the Free Software
+ Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+*/
+
+#ifdef HAVE_CONFIG_H
+# include "config.h"
+#endif
+
+#include <stdlib.h>
+#include <stdarg.h>
+#include <stdio.h>
+#include <assert.h>
+#include <string.h>
+
+extern int fred;
+
+#include "mjpeg_logging.h"
+
+static const char _rcsid[] = "$Id: ";
+
+#define MAX_DEFAULT_ID_SIZE 16
+#define DEFAULT_DEFAULT_ID "???"
+
+#ifdef HAVE___PROGNAME
+extern const char *__progname;
+#endif
+
+static log_level_t mjpeg_log_verbosity = (log_level_t) 0;
+static char default_handler_id[MAX_DEFAULT_ID_SIZE];
+static char default_handler_id_is_set = 0;
+
+static int
+default_mjpeg_log_filter (log_level_t level)
+{
+ int verb_from_env;
+
+ if (mjpeg_log_verbosity == 0) {
+ char *mjpeg_verb_env = getenv ("MJPEG_VERBOSITY");
+
+ if (mjpeg_verb_env != NULL) {
+ verb_from_env = LOG_WARN - atoi (mjpeg_verb_env);
+ if (verb_from_env >= LOG_DEBUG && verb_from_env <= LOG_ERROR)
+ mjpeg_log_verbosity = (log_level_t) verb_from_env;
+ }
+ }
+ return (level < LOG_WARN && level < mjpeg_log_verbosity);
+}
+
+static mjpeg_log_filter_t _filter = default_mjpeg_log_filter;
+
+static void
+default_mjpeg_log_handler (log_level_t level, const char message[])
+{
+ const char *ids;
+
+ if ((*_filter) (level))
+ return;
+ if (default_handler_id_is_set) {
+ ids = default_handler_id;
+ } else {
+#ifdef HAVE___PROGNAME
+ ids = __progname;
+#else
+ ids = DEFAULT_DEFAULT_ID;
+#endif
+ }
+ switch (level) {
+ case LOG_ERROR:
+ fprintf (stderr, "**ERROR: [%s] %s\n", ids, message);
+ break;
+ case LOG_DEBUG:
+ fprintf (stderr, "--DEBUG: [%s] %s\n", ids, message);
+ break;
+ case LOG_WARN:
+ fprintf (stderr, "++ WARN: [%s] %s\n", ids, message);
+ break;
+ case LOG_INFO:
+ fprintf (stderr, " INFO: [%s] %s\n", ids, message);
+ break;
+ default:
+ assert (0);
+ }
+}
+
+static mjpeg_log_handler_t _handler = default_mjpeg_log_handler;
+
+
+mjpeg_log_handler_t
+mjpeg_log_set_handler (mjpeg_log_handler_t new_handler)
+{
+ mjpeg_log_handler_t old_handler = _handler;
+
+ _handler = new_handler;
+
+ return old_handler;
+}
+
+/***************
+ *
+ * Set default log handlers degree of verboseity.
+ * 0 = quiet, 1 = info, 2 = debug
+ *
+ *************/
+
+int
+mjpeg_default_handler_verbosity (int verbosity)
+{
+ int prev_verb = mjpeg_log_verbosity;
+
+ mjpeg_log_verbosity = (log_level_t) (LOG_WARN - (log_level_t) verbosity);
+ return prev_verb;
+}
+
+/*
+ * Set identifier string used by default handler
+ *
+ */
+int
+mjpeg_default_handler_identifier (const char *new_id)
+{
+ const char *s;
+
+ if (new_id == NULL) {
+ default_handler_id_is_set = 0;
+ return 0;
+ }
+ /* find basename of new_id (remove any directory prefix) */
+ if ((s = strrchr (new_id, '/')) == NULL)
+ s = new_id;
+ else
+ s = s + 1;
+ strncpy (default_handler_id, s, MAX_DEFAULT_ID_SIZE);
+ default_handler_id[MAX_DEFAULT_ID_SIZE - 1] = '\0';
+ default_handler_id_is_set = 1;
+ return 0;
+}
+
+
+static void
+mjpeg_logv (log_level_t level, const char format[], va_list args)
+{
+ char buf[1024] = { 0, };
+
+ /* TODO: Original had a re-entrancy error trap to assist bug
+ finding. To make this work with multi-threaded applications a
+ lock is needed hence delete.
+ */
+
+
+ vsnprintf (buf, sizeof (buf) - 1, format, args);
+
+ _handler (level, buf);
+}
+
+void
+mjpeg_log (log_level_t level, const char format[], ...)
+{
+ va_list args;
+
+ va_start (args, format);
+ mjpeg_logv (level, format, args);
+ va_end (args);
+}
+
+void
+mjpeg_debug (const char format[], ...)
+{
+ va_list args;
+
+ va_start (args, format);
+ mjpeg_logv (LOG_DEBUG, format, args);
+ va_end (args);
+}
+
+void
+mjpeg_info (const char format[], ...)
+{
+ va_list args;
+
+ va_start (args, format);
+ mjpeg_logv (LOG_INFO, format, args);
+ va_end (args);
+}
+
+void
+mjpeg_warn (const char format[], ...)
+{
+ va_list args;
+
+ va_start (args, format);
+ mjpeg_logv (LOG_WARN, format, args);
+ va_end (args);
+}
+
+void
+mjpeg_error (const char format[], ...)
+{
+ va_list args;
+
+ va_start (args, format);
+ mjpeg_logv (LOG_ERROR, format, args);
+ va_end (args);
+}
+
+void
+mjpeg_error_exit1 (const char format[], ...)
+{
+ va_list args;
+
+ va_start (args, format);
+ mjpeg_logv (LOG_ERROR, format, args);
+ va_end (args);
+ exit (EXIT_FAILURE);
+}
+
+
+/*
+ * Local variables:
+ * c-file-style: "gnu"
+ * tab-width: 8
+ * indent-tabs-mode: nil
+ * End:
+ */