diff options
Diffstat (limited to 'gst-libs/ext/mplex/mjpeg_logging.cc')
| -rw-r--r-- | gst-libs/ext/mplex/mjpeg_logging.cc | 239 |
1 files changed, 239 insertions, 0 deletions
diff --git a/gst-libs/ext/mplex/mjpeg_logging.cc b/gst-libs/ext/mplex/mjpeg_logging.cc new file mode 100644 index 00000000..db4b0c07 --- /dev/null +++ b/gst-libs/ext/mplex/mjpeg_logging.cc @@ -0,0 +1,239 @@ +/* + $Id$ + + 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: + */ |