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| 1 /* | |
| 2 * copyright (c) 2006 Michael Niedermayer <michaelni@gmx.at> | |
| 3 * | |
| 4 * This file is part of FFmpeg. | |
| 5 * | |
| 6 * FFmpeg is free software; you can redistribute it and/or | |
| 7 * modify it under the terms of the GNU Lesser General Public | |
| 8 * License as published by the Free Software Foundation; either | |
| 9 * version 2.1 of the License, or (at your option) any later version. | |
| 10 * | |
| 11 * FFmpeg is distributed in the hope that it will be useful, | |
| 12 * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
| 14 * Lesser General Public License for more details. | |
| 15 * | |
| 16 * You should have received a copy of the GNU Lesser General Public | |
| 17 * License along with FFmpeg; if not, write to the Free Software | |
| 18 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA | |
| 19 */ | |
| 20 | |
| 21 #ifndef AVUTIL_LOG_H | |
| 22 #define AVUTIL_LOG_H | |
| 23 | |
| 24 #include <stdarg.h> | |
| 25 #include "avutil.h" | |
| 26 | |
| 27 /** | |
| 28 * Describes the class of an AVClass context structure. That is an | |
| 29 * arbitrary struct of which the first field is a pointer to an | |
| 30 * AVClass struct (e.g. AVCodecContext, AVFormatContext etc.). | |
| 31 */ | |
| 32 typedef struct AVCLASS AVClass; | |
| 33 struct AVCLASS { | |
| 34 /** | |
| 35 * The name of the class; usually it is the same name as the | |
| 36 * context structure type to which the AVClass is associated. | |
| 37 */ | |
| 38 const char* class_name; | |
| 39 | |
| 40 /** | |
| 41 * A pointer to a function which returns the name of a context | |
| 42 * instance \p ctx associated with the class. | |
| 43 */ | |
| 44 const char* (*item_name)(void* ctx); | |
| 45 | |
| 46 /** | |
| 47 * a pointer to the first option specified in the class if any or NULL | |
| 48 * | |
| 49 * @see av_set_default_options() | |
| 50 */ | |
| 51 const struct AVOption *option; | |
| 52 }; | |
| 53 | |
| 54 /* av_log API */ | |
| 55 | |
| 56 #define AV_LOG_QUIET -8 | |
| 57 | |
| 58 /** | |
| 59 * Something went really wrong and we will crash now. | |
| 60 */ | |
| 61 #define AV_LOG_PANIC 0 | |
| 62 | |
| 63 /** | |
| 64 * Something went wrong and recovery is not possible. | |
| 65 * For example, no header was found for a format which depends | |
| 66 * on headers or an illegal combination of parameters is used. | |
| 67 */ | |
| 68 #define AV_LOG_FATAL 8 | |
| 69 | |
| 70 /** | |
| 71 * Something went wrong and cannot losslessly be recovered. | |
| 72 * However, not all future data is affected. | |
| 73 */ | |
| 74 #define AV_LOG_ERROR 16 | |
| 75 | |
| 76 /** | |
| 77 * Something somehow does not look correct. This may or may not | |
| 78 * lead to problems. An example would be the use of '-vstrict -2'. | |
| 79 */ | |
| 80 #define AV_LOG_WARNING 24 | |
| 81 | |
| 82 #define AV_LOG_INFO 32 | |
| 83 #define AV_LOG_VERBOSE 40 | |
| 84 | |
| 85 /** | |
| 86 * Stuff which is only useful for libav* developers. | |
| 87 */ | |
| 88 #define AV_LOG_DEBUG 48 | |
| 89 | |
| 90 /** | |
| 91 * Sends the specified message to the log if the level is less than or equal | |
| 92 * to the current av_log_level. By default, all logging messages are sent to | |
| 93 * stderr. This behavior can be altered by setting a different av_vlog callback | |
| 94 * function. | |
| 95 * | |
| 96 * @param avcl A pointer to an arbitrary struct of which the first field is a | |
| 97 * pointer to an AVClass struct. | |
| 98 * @param level The importance level of the message, lower values signifying | |
| 99 * higher importance. | |
| 100 * @param fmt The format string (printf-compatible) that specifies how | |
| 101 * subsequent arguments are converted to output. | |
| 102 * @see av_vlog | |
| 103 */ | |
| 104 #ifdef __GNUC__ | |
| 105 void av_log(void*, int level, const char *fmt, ...) __attribute__ ((__format__ (
__printf__, 3, 4))); | |
| 106 #else | |
| 107 void av_log(void*, int level, const char *fmt, ...); | |
| 108 #endif | |
| 109 | |
| 110 void av_vlog(void*, int level, const char *fmt, va_list); | |
| 111 int av_log_get_level(void); | |
| 112 void av_log_set_level(int); | |
| 113 void av_log_set_callback(void (*)(void*, int, const char*, va_list)); | |
| 114 void av_log_default_callback(void* ptr, int level, const char* fmt, va_list vl); | |
| 115 | |
| 116 #endif /* AVUTIL_LOG_H */ | |
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