av_log.c

   1 /*
   2  * av_log to mp_msg converter
   3  * Copyright (C) 2006 Michael Niedermayer
   4  * Copyright (C) 2009 Uoti Urpala
   5  *
   6  * This file is part of MPlayer.
   7  *
   8  * MPlayer is free software; you can redistribute it and/or modify
   9  * it under the terms of the GNU General Public License as published by
  10  * the Free Software Foundation; either version 2 of the License, or
  11  * (at your option) any later version.
  12  *
  13  * MPlayer is distributed in the hope that it will be useful,
  14  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16  * GNU General Public License for more details.
  17  *
  18  * You should have received a copy of the GNU General Public License along
  19  * with MPlayer; if not, write to the Free Software Foundation, Inc.,
  20  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  21  */
  22
  23 #include <stdlib.h>
  24 #include <stdbool.h>
  25
  26 #include "av_log.h"
  27 #include "config.h"
  28 #include "mp_msg.h"
  29 #include <libavutil/log.h>
  30
  31 #ifdef CONFIG_FFMPEG
  32 #include <libavcodec/avcodec.h>
  33 #include <libavformat/avformat.h>
  34 #endif
  35
  36 static int av_log_level_to_mp_level(int av_level)
  37 {
  38     if (av_level > AV_LOG_VERBOSE)
  39         return MSGL_DBG2;
  40     if (av_level > AV_LOG_INFO)
  41         return MSGL_V;
  42     if (av_level > AV_LOG_WARNING)
  43         return MSGL_INFO;
  44     if (av_level > AV_LOG_ERROR)
  45         return MSGL_WARN;
  46     if (av_level > AV_LOG_FATAL)
  47         return MSGL_ERR;
  48     return MSGL_FATAL;
  49 }
  50
  51 static int extract_msg_type_from_ctx(void *ptr)
  52 {
  53     if (!ptr)
  54         return MSGT_FIXME;
  55
  56     AVClass *avc = *(AVClass **)ptr;
  57     if (!avc) {
  58         mp_msg(MSGT_FIXME, MSGL_WARN,
  59                "av_log callback called with bad parameters (NULL AVClass).\n"
  60                "This is a bug in one of Libav/FFmpeg libraries used.\n");
  61         return MSGT_FIXME;
  62     }
  63
  64 #ifdef CONFIG_FFMPEG
  65     if (!strcmp(avc->class_name, "AVCodecContext")) {
  66         AVCodecContext *s = ptr;
  67         if (s->codec) {
  68             if (s->codec->type == AVMEDIA_TYPE_AUDIO) {
  69                 if (s->codec->decode)
  70                     return MSGT_DECAUDIO;
  71             } else if (s->codec->type == AVMEDIA_TYPE_VIDEO) {
  72                 if (s->codec->decode)
  73                     return MSGT_DECVIDEO;
  74             }
  75             // FIXME subtitles, encoders
  76             // What msgt for them? There is nothing appropriate...
  77         }
  78         return MSGT_FIXME;
  79     }
  80
  81     if (!strcmp(avc->class_name, "AVFormatContext")) {
  82         AVFormatContext *s = ptr;
  83         if (s->iformat)
  84             return MSGT_DEMUXER;
  85         else if (s->oformat)
  86             return MSGT_MUXER;
  87         return MSGT_FIXME;
  88     }
  89 #endif
  90
  91     return MSGT_FIXME;
  92 }
  93
  94 static void mp_msg_av_log_callback(void *ptr, int level, const char *fmt,
  95                                    va_list vl)
  96 {
  97     static bool print_prefix = 1;
  98     AVClass *avc = ptr ? *(AVClass **)ptr : NULL;
  99     int mp_level = av_log_level_to_mp_level(level);
 100     int type = extract_msg_type_from_ctx(ptr);
 101
 102     if (!mp_msg_test(type, mp_level))
 103         return;
 104
 105     if (print_prefix && avc)
 106         mp_msg(type, mp_level, "[%s @ %p]", avc->item_name(ptr), avc);
 107     print_prefix = fmt[strlen(fmt) - 1] == '\n';
 108
 109     mp_msg_va(type, mp_level, fmt, vl);
 110 }
 111
 112 void init_libav(void)
 113 {
 114     av_log_set_callback(mp_msg_av_log_callback);
 115 #ifdef CONFIG_FFMPEG
 116     avcodec_init();
 117     avcodec_register_all();
 118
 119     av_register_all();
 120 #endif
 121 }