1 /*****************************************************************************
2 * messages.c: messages interface
3 * This library provides an interface to the message queue to be used by other
4 * modules, especially intf modules. See vlc_config.h for output configuration.
5 *****************************************************************************
6 * Copyright (C) 1998-2005 VLC authors and VideoLAN
9 * Authors: Vincent Seguin <seguin@via.ecp.fr>
10 * Samuel Hocevar <sam@zoy.org>
12 * This program is free software; you can redistribute it and/or modify it
13 * under the terms of the GNU Lesser General Public License as published by
14 * the Free Software Foundation; either version 2.1 of the License, or
15 * (at your option) any later version.
17 * This program is distributed in the hope that it will be useful,
18 * but WITHOUT ANY WARRANTY; without even the implied warranty of
19 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
20 * GNU Lesser General Public License for more details.
22 * You should have received a copy of the GNU Lesser General Public License
23 * along with this program; if not, write to the Free Software Foundation,
24 * Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
25 *****************************************************************************/
27 /*****************************************************************************
29 *****************************************************************************/
36 #include <stdarg.h> /* va_list for BSD */
40 #include <vlc_common.h>
41 #include <vlc_interface.h>
42 #include <vlc_charset.h>
43 #include <vlc_modules.h>
44 #include "../libvlc.h"
47 #include <android/log.h>
59 static void vlc_vaLogCallback(libvlc_int_t *vlc, int type,
60 const vlc_log_t *item, const char *format,
63 vlc_logger_t *logger = libvlc_priv(vlc)->logger;
65 assert(logger != NULL);
66 vlc_rwlock_rdlock(&logger->lock);
67 logger->log(logger->sys, type, item, format, ap);
68 vlc_rwlock_unlock(&logger->lock);
71 static void vlc_LogCallback(libvlc_int_t *vlc, int type, const vlc_log_t *item,
72 const char *format, ...)
77 vlc_vaLogCallback(vlc, type, item, format, ap);
82 static void Win32DebugOutputMsg (void *, int , const vlc_log_t *,
83 const char *, va_list);
87 * Emit a log message. This function is the variable argument list equivalent
90 void vlc_vaLog (vlc_object_t *obj, int type, const char *module,
91 const char *format, va_list args)
93 if (obj != NULL && obj->i_flags & OBJECT_FLAGS_QUIET)
96 /* Get basename from the module filename */
97 char *p = strrchr(module, '/');
100 p = strchr(module, '.');
102 size_t modlen = (p != NULL) ? (p - module) : 0;
103 char modulebuf[modlen + 1];
106 memcpy(modulebuf, module, modlen);
107 modulebuf[modlen] = '\0';
111 /* Fill message information fields */
114 msg.i_object_id = (uintptr_t)obj;
115 msg.psz_object_type = (obj != NULL) ? obj->psz_object_type : "generic";
116 msg.psz_module = module;
117 msg.psz_header = NULL;
119 for (vlc_object_t *o = obj; o != NULL; o = o->p_parent)
120 if (o->psz_header != NULL)
122 msg.psz_header = o->psz_header;
130 Win32DebugOutputMsg (NULL, type, &msg, format, ap);
134 /* Pass message to the callback */
136 vlc_vaLogCallback(obj->p_libvlc, type, &msg, format, args);
140 * Emit a log message.
141 * \param obj VLC object emitting the message or NULL
142 * \param type VLC_MSG_* message type (info, error, warning or debug)
143 * \param module name of module from which the message come
144 * (normally MODULE_STRING)
145 * \param format printf-like message format
147 void vlc_Log(vlc_object_t *obj, int type, const char *module,
148 const char *format, ... )
152 va_start(ap, format);
153 vlc_vaLog(obj, type, module, format, ap);
157 static const char msg_type[4][9] = { "", " error", " warning", " debug" };
158 #define COL(x,y) "\033[" #x ";" #y "m"
159 #define RED COL(31,1)
160 #define GREEN COL(32,1)
161 #define YELLOW COL(0,33)
162 #define WHITE COL(0,1)
163 #define GRAY "\033[0m"
164 static const char msg_color[4][8] = { WHITE, RED, YELLOW, GRAY };
166 /* Display size of a pointer */
167 static const int ptr_width = 2 * /* hex digits */ sizeof(uintptr_t);
169 static void PrintColorMsg (void *d, int type, const vlc_log_t *p_item,
170 const char *format, va_list ap)
172 FILE *stream = stderr;
173 int verbose = (intptr_t)d;
175 if (verbose < 0 || verbose < (type - VLC_MSG_ERR))
178 int canc = vlc_savecancel ();
181 utf8_fprintf (stream, "["GREEN"%0*"PRIxPTR""GRAY"] ", ptr_width, p_item->i_object_id);
182 if (p_item->psz_header != NULL)
183 utf8_fprintf (stream, "[%s] ", p_item->psz_header);
184 utf8_fprintf (stream, "%s %s%s: %s", p_item->psz_module,
185 p_item->psz_object_type, msg_type[type], msg_color[type]);
186 utf8_vfprintf (stream, format, ap);
187 fputs (GRAY"\n", stream);
188 #if defined (_WIN32) || defined (__OS2__)
191 funlockfile (stream);
192 vlc_restorecancel (canc);
195 static void PrintMsg (void *d, int type, const vlc_log_t *p_item,
196 const char *format, va_list ap)
198 FILE *stream = stderr;
199 int verbose = (intptr_t)d;
201 if (verbose < 0 || verbose < (type - VLC_MSG_ERR))
204 int canc = vlc_savecancel ();
207 utf8_fprintf (stream, "[%0*"PRIxPTR"] ", ptr_width, p_item->i_object_id);
208 if (p_item->psz_header != NULL)
209 utf8_fprintf (stream, "[%s] ", p_item->psz_header);
210 utf8_fprintf (stream, "%s %s%s: ", p_item->psz_module,
211 p_item->psz_object_type, msg_type[type]);
212 utf8_vfprintf (stream, format, ap);
213 putc_unlocked ('\n', stream);
214 #if defined (_WIN32) || defined (__OS2__)
217 funlockfile (stream);
218 vlc_restorecancel (canc);
222 static void Win32DebugOutputMsg (void* d, int type, const vlc_log_t *p_item,
223 const char *format, va_list dol)
227 const signed char *pverbose = d;
228 if (pverbose && (*pverbose < 0 || *pverbose < (type - VLC_MSG_ERR)))
233 int msg_len = vsnprintf(NULL, 0, format, dol2);
239 char *msg = malloc(msg_len + 1 + 1);
243 msg_len = vsnprintf(msg, msg_len+1, format, dol);
245 if(msg[msg_len-1] != '\n'){
247 msg[msg_len + 1] = '\0';
249 char* psz_msg = NULL;
250 if(asprintf(&psz_msg, "%s %s%s: %s", p_item->psz_module,
251 p_item->psz_object_type, msg_type[type], msg) > 0) {
252 wchar_t* wmsg = ToWide(psz_msg);
253 OutputDebugStringW(wmsg);
263 static void AndroidPrintMsg (void *d, int type, const vlc_log_t *p_item,
264 const char *format, va_list ap)
266 int verbose = (intptr_t)d;
269 if (verbose < 0 || verbose < (type - VLC_MSG_ERR))
272 int canc = vlc_savecancel ();
275 if (asprintf (&format2, "[%0*"PRIxPTR"] %s %s: %s",
276 ptr_width, p_item->i_object_id, p_item->psz_module,
277 p_item->psz_object_type, format) < 0)
281 prio = ANDROID_LOG_INFO;
284 prio = ANDROID_LOG_ERROR;
287 prio = ANDROID_LOG_WARN;
291 prio = ANDROID_LOG_DEBUG;
293 __android_log_vprint (prio, "VLC", format2, ap);
295 vlc_restorecancel (canc);
299 typedef struct vlc_log_early_t
301 struct vlc_log_early_t *next;
310 vlc_log_early_t *head;
311 vlc_log_early_t **tailp;
312 } vlc_logger_early_t;
314 static void vlc_vaLogEarly(void *d, int type, const vlc_log_t *item,
315 const char *format, va_list ap)
317 vlc_logger_early_t *sys = d;
319 vlc_log_early_t *log = malloc(sizeof (*log));
320 if (unlikely(log == NULL))
325 log->meta.i_object_id = item->i_object_id;
326 /* NOTE: Object types MUST be static constant - no need to copy them. */
327 log->meta.psz_object_type = item->psz_object_type;
328 log->meta.psz_module = item->psz_module; /* Ditto. */
329 log->meta.psz_header = item->psz_header ? strdup(item->psz_header) : NULL;
331 int canc = vlc_savecancel(); /* XXX: needed for vasprintf() ? */
332 if (vasprintf(&log->msg, format, ap) == -1)
334 vlc_restorecancel(canc);
336 vlc_mutex_lock(&sys->lock);
337 assert(sys->tailp != NULL);
338 assert(*(sys->tailp) == NULL);
340 sys->tailp = &log->next;
341 vlc_mutex_unlock(&sys->lock);
344 static int vlc_LogEarlyOpen(vlc_logger_t *logger)
346 vlc_logger_early_t *sys = malloc(sizeof (*sys));
348 if (unlikely(sys == NULL))
351 vlc_mutex_init(&sys->lock);
353 sys->tailp = &sys->head;
355 logger->log = vlc_vaLogEarly;
360 static void vlc_LogEarlyClose(vlc_logger_t *logger, void *d)
362 libvlc_int_t *vlc = logger->p_libvlc;
363 vlc_logger_early_t *sys = d;
365 /* Drain early log messages */
366 for (vlc_log_early_t *log = sys->head, *next; log != NULL; log = next)
368 vlc_LogCallback(vlc, log->type, &log->meta, "%s",
369 (log->msg != NULL) ? log->msg : "message lost");
375 vlc_mutex_destroy(&sys->lock);
379 static void vlc_vaLogDiscard(void *d, int type, const vlc_log_t *item,
380 const char *format, va_list ap)
382 (void) d; (void) type; (void) item; (void) format; (void) ap;
385 static int vlc_logger_load(void *func, va_list ap)
387 vlc_log_cb (*activate)(vlc_object_t *, void **) = func;
388 vlc_logger_t *logger = va_arg(ap, vlc_logger_t *);
389 vlc_log_cb *cb = va_arg(ap, vlc_log_cb *);
390 void **sys = va_arg(ap, void **);
392 *cb = activate(VLC_OBJECT(logger), sys);
393 return (*cb != NULL) ? VLC_SUCCESS : VLC_EGENERIC;
396 static void vlc_logger_unload(void *func, va_list ap)
398 void (*deactivate)(vlc_logger_t *) = func;
399 void *sys = va_arg(ap, void *);
405 * Performs preinitialization of the messages logging subsystem.
407 * Early log messages will be stored in memory until the subsystem is fully
408 * initialized with vlc_LogInit(). This enables logging before the
409 * configuration and modules bank are ready.
411 * \return 0 on success, -1 on error.
413 int vlc_LogPreinit(libvlc_int_t *vlc)
415 vlc_logger_t *logger = vlc_custom_create(vlc, sizeof (*logger), "logger");
417 libvlc_priv(vlc)->logger = logger;
419 if (unlikely(logger == NULL))
422 vlc_rwlock_init(&logger->lock);
424 if (vlc_LogEarlyOpen(logger))
426 logger->log = vlc_vaLogDiscard;
430 /* Announce who we are */
431 msg_Dbg(vlc, "VLC media player - %s", VERSION_MESSAGE);
432 msg_Dbg(vlc, "%s", COPYRIGHT_MESSAGE);
433 msg_Dbg(vlc, "revision %s", psz_vlc_changeset);
434 msg_Dbg(vlc, "configured with %s", CONFIGURE_LINE);
439 * Initializes the messages logging subsystem and drain the early messages to
440 * the configured log.
442 * \return 0 on success, -1 on error.
444 int vlc_LogInit(libvlc_int_t *vlc)
446 vlc_logger_t *logger = libvlc_priv(vlc)->logger;
447 if (unlikely(logger == NULL))
451 void *sys, *early_sys = NULL;
453 /* TODO: module configuration item */
454 module_t *module = vlc_module_load(logger, "logger", NULL, false,
455 vlc_logger_load, logger, &cb, &sys);
459 cb = AndroidPrintMsg;
460 #elif defined (HAVE_ISATTY) && !defined (_WIN32)
461 if (isatty(STDERR_FILENO) && var_InheritBool(vlc, "color"))
467 signed char verbosity;
469 if (var_InheritBool(vlc, "quiet"))
473 const char *str = getenv("VLC_VERBOSE");
475 if (str == NULL || sscanf(str, "%hhd", &verbosity) < 1)
476 verbosity = var_InheritInteger(vlc, "verbose");
478 sys = (void *)(intptr_t)verbosity;
481 vlc_rwlock_wrlock(&logger->lock);
482 if (logger->log == vlc_vaLogEarly)
483 early_sys = logger->sys;
487 assert(logger->module == NULL); /* Only one call to vlc_LogInit()! */
488 logger->module = module;
489 vlc_rwlock_unlock(&logger->lock);
491 if (early_sys != NULL)
492 vlc_LogEarlyClose(logger, early_sys);
498 * Sets the message logging callback.
499 * \param cb message callback, or NULL to clear
500 * \param data data pointer for the message callback
502 void vlc_LogSet(libvlc_int_t *vlc, vlc_log_cb cb, void *opaque)
504 vlc_logger_t *logger = libvlc_priv(vlc)->logger;
506 if (unlikely(logger == NULL))
513 cb = vlc_vaLogDiscard;
515 vlc_rwlock_wrlock(&logger->lock);
517 module = logger->module;
520 logger->sys = opaque;
521 logger->module = NULL;
522 vlc_rwlock_unlock(&logger->lock);
525 vlc_module_unload(module, vlc_logger_unload, sys);
527 /* Announce who we are */
528 msg_Dbg (vlc, "VLC media player - %s", VERSION_MESSAGE);
529 msg_Dbg (vlc, "%s", COPYRIGHT_MESSAGE);
530 msg_Dbg (vlc, "revision %s", psz_vlc_changeset);
531 msg_Dbg (vlc, "configured with %s", CONFIGURE_LINE);
534 void vlc_LogDeinit(libvlc_int_t *vlc)
536 vlc_logger_t *logger = libvlc_priv(vlc)->logger;
538 if (unlikely(logger == NULL))
541 if (logger->module != NULL)
542 vlc_module_unload(logger->module, vlc_logger_unload, logger->sys);
544 /* Flush early log messages (corner case: no call to vlc_LogInit()) */
545 if (logger->log == vlc_vaLogEarly)
547 logger->log = vlc_vaLogDiscard;
548 vlc_LogEarlyClose(logger, logger->sys);
551 vlc_rwlock_destroy(&logger->lock);
552 vlc_object_release(logger);
553 libvlc_priv(vlc)->logger = NULL;