/* * copyright (c) 2006 Michael Niedermayer <michaelni@gmx.at> * * This file is part of FFmpeg. * * FFmpeg is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2.1 of the License, or (at your option) any later version. * * FFmpeg 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 * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with FFmpeg; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */ #ifndef AVUTIL_LOG_H #define AVUTIL_LOG_H #include <stdarg.h> /** * Describes the class of an AVClass context structure, that is an * arbitrary struct of which the first field is a pointer to an * AVClass struct (e.g. AVCodecContext, AVFormatContext etc.). */ typedef struct AVCLASS AVClass; struct AVCLASS { /** * The name of the class; usually it is the same name as the * context structure type to which the AVClass is associated. */ const char* class_name; /** * a pointer to a function which returns the name of a context * instance \p ctx associated with the class */ const char* (*item_name)(void* ctx); /** * a pointer to the first option specified in the class if any or NULL * * @see av_set_default_options() */ const struct AVOption *option; }; /* av_log API */ #if LIBAVUTIL_VERSION_INT < (50<<16) #define AV_LOG_QUIET -1 #define AV_LOG_FATAL 0 #define AV_LOG_ERROR 0 #define AV_LOG_WARNING 1 #define AV_LOG_INFO 1 #define AV_LOG_VERBOSE 1 #define AV_LOG_DEBUG 2 #else #define AV_LOG_QUIET -8 /** * something went really wrong and we will crash now */ #define AV_LOG_PANIC 0 /** * something went wrong and recovery is not possible * like no header in a format which depends on it or a combination * of parameters which are not allowed */ #define AV_LOG_FATAL 8 /** * something went wrong and cannot losslessly be recovered * but not all future data is affected */ #define AV_LOG_ERROR 16 /** * something somehow does not look correct / something which may or may not * lead to some problems like use of -vstrict -2 */ #define AV_LOG_WARNING 24 #define AV_LOG_INFO 32 #define AV_LOG_VERBOSE 40 /** * stuff which is only useful for libav* developers */ #define AV_LOG_DEBUG 48 #endif #if LIBAVUTIL_VERSION_INT < (50<<16) extern int av_log_level; #endif /** * Send the specified message to the log if the level is less than or equal to * the current av_log_level. By default, all logging messages are sent to * stderr. This behavior can be altered by setting a different av_vlog callback * function. * * @param avcl A pointer to an arbitrary struct of which the first field is a * pointer to an AVClass struct. * @param level The importance level of the message, lower values signifying * higher importance. * @param fmt The format string (printf-compatible) that specifies how * subsequent arguments are converted to output. * @see av_vlog */ #ifdef __GNUC__ void av_log(void*, int level, const char *fmt, ...) __attribute__ ((__format__ (__printf__, 3, 4))); #else void av_log(void*, int level, const char *fmt, ...); #endif void av_vlog(void*, int level, const char *fmt, va_list); int av_log_get_level(void); void av_log_set_level(int); void av_log_set_callback(void (*)(void*, int, const char*, va_list)); void av_log_default_callback(void* ptr, int level, const char* fmt, va_list vl); #endif /* AVUTIL_LOG_H */