summaryrefslogtreecommitdiffstats
path: root/common/av_log.c
blob: a6d51f88e3faa864141e79a9a107860556dcf8c9 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
/*
 * av_log to mp_msg converter
 * Copyright (C) 2006 Michael Niedermayer
 * Copyright (C) 2009 Uoti Urpala
 *
 * This file is part of MPlayer.
 *
 * MPlayer 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.
 *
 * MPlayer 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 MPlayer; if not, write to the Free Software Foundation, Inc.,
 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
 */

#include <stdlib.h>
#include <stdio.h>
#include <stdbool.h>
#include <pthread.h>

#include "av_log.h"
#include "config.h"
#include "common/common.h"
#include "common/global.h"
#include "common/msg.h"

#include <libavutil/avutil.h>
#include <libavutil/log.h>

#include <libavcodec/avcodec.h>
#include <libavformat/avformat.h>
#include <libswscale/swscale.h>

#if HAVE_LIBAVDEVICE
#include <libavdevice/avdevice.h>
#endif

#if HAVE_LIBAVFILTER
#include <libavfilter/avfilter.h>
#endif

#if HAVE_LIBAVRESAMPLE
#include <libavresample/avresample.h>
#endif
#if HAVE_LIBSWRESAMPLE
#include <libswresample/swresample.h>
#endif

#if LIBAVCODEC_VERSION_MICRO >= 100
#define LIB_PREFIX "ffmpeg"
#else
#define LIB_PREFIX "libav"
#endif

// Needed because the av_log callback does not provide a library-safe message
// callback.
static pthread_mutex_t log_lock = PTHREAD_MUTEX_INITIALIZER;
static struct mpv_global *log_mpv_instance;
static struct mp_log *log_root, *log_decaudio, *log_decvideo, *log_demuxer;
static bool log_print_prefix = true;

static int av_log_level_to_mp_level(int av_level)
{
    if (av_level > AV_LOG_VERBOSE)
        return MSGL_DEBUG;
    if (av_level > AV_LOG_INFO)
        return MSGL_V;
    if (av_level > AV_LOG_WARNING)
        return MSGL_V;
    if (av_level > AV_LOG_ERROR)
        return MSGL_WARN;
    if (av_level > AV_LOG_FATAL)
        return MSGL_ERR;
    return MSGL_FATAL;
}

static struct mp_log *get_av_log(void *ptr)
{
    if (!ptr)
        return log_root;

    AVClass *avc = *(AVClass **)ptr;
    if (!avc) {
        mp_warn(log_root,
               "av_log callback called with bad parameters (NULL AVClass).\n"
               "This is a bug in one of Libav/FFmpeg libraries used.\n");
        return log_root;
    }

    if (!strcmp(avc->class_name, "AVCodecContext")) {
        AVCodecContext *s = ptr;
        if (s->codec) {
            if (s->codec->type == AVMEDIA_TYPE_AUDIO) {
                if (s->codec->decode)
                    return log_decaudio;
            } else if (s->codec->type == AVMEDIA_TYPE_VIDEO) {
                if (s->codec->decode)
                    return log_decvideo;
            }
        }
    }

    if (!strcmp(avc->class_name, "AVFormatContext")) {
        AVFormatContext *s = ptr;
        if (s->iformat)
            return log_demuxer;
    }

    return log_root;
}

static void mp_msg_av_log_callback(void *ptr, int level, const char *fmt,
                                   va_list vl)
{
    AVClass *avc = ptr ? *(AVClass **)ptr : NULL;
    int mp_level = av_log_level_to_mp_level(level);

    // Note: mp_log is thread-safe, but destruction of the log instances is not.
    pthread_mutex_lock(&log_lock);

    if (!log_mpv_instance) {
        pthread_mutex_unlock(&log_lock);
        // Fallback to stderr
        vfprintf(stderr, fmt, vl);
        return;
    }

    struct mp_log *log = get_av_log(ptr);

    if (mp_msg_test_log(log, mp_level)) {
        if (log_print_prefix)
            mp_msg_log(log, mp_level, "%s: ", avc ? avc->item_name(ptr) : "?");
        log_print_prefix = fmt[strlen(fmt) - 1] == '\n';

        mp_msg_log_va(log, mp_level, fmt, vl);
    }

    pthread_mutex_unlock(&log_lock);
}

void init_libav(struct mpv_global *global)
{
    pthread_mutex_lock(&log_lock);
    if (!log_mpv_instance) {
        log_mpv_instance = global;
        log_root = mp_log_new(NULL, global->log, LIB_PREFIX);
        log_decaudio = mp_log_new(log_root, log_root, "audio");
        log_decvideo = mp_log_new(log_root, log_root, "video");
        log_demuxer = mp_log_new(log_root, log_root, "demuxer");
        av_log_set_callback(mp_msg_av_log_callback);
    }
    pthread_mutex_unlock(&log_lock);

    avcodec_register_all();
    av_register_all();
    avformat_network_init();

#if HAVE_LIBAVFILTER
    avfilter_register_all();
#endif
#if HAVE_LIBAVDEVICE
    avdevice_register_all();
#endif
}

void uninit_libav(struct mpv_global *global)
{
    pthread_mutex_lock(&log_lock);
    if (log_mpv_instance == global) {
        log_mpv_instance = NULL;
        talloc_free(log_root);
    }
    pthread_mutex_unlock(&log_lock);
}

#define V(x) (x)>>16, (x)>>8 & 255, (x) & 255
static void print_version(struct mp_log *log, int v, char *name,
                          unsigned buildv, unsigned runv)
{
    mp_msg_log(log, v, "   %-15s %d.%d.%d", name, V(buildv));
    if (buildv != runv)
        mp_msg_log(log, v, " (runtime %d.%d.%d)", V(runv));
    mp_msg_log(log, v, "\n");
}
#undef V

void print_libav_versions(struct mp_log *log, int v)
{
    mp_msg_log(log, v, "%s library versions:\n", LIB_PREFIX);

    print_version(log, v, "libavutil",     LIBAVUTIL_VERSION_INT,     avutil_version());
    print_version(log, v, "libavcodec",    LIBAVCODEC_VERSION_INT,    avcodec_version());
    print_version(log, v, "libavformat",   LIBAVFORMAT_VERSION_INT,   avformat_version());
    print_version(log, v, "libswscale",    LIBSWSCALE_VERSION_INT,    swscale_version());
#if HAVE_LIBAVFILTER
    print_version(log, v, "libavfilter",   LIBAVFILTER_VERSION_INT,   avfilter_version());
#endif
#if HAVE_LIBAVRESAMPLE
    print_version(log, v, "libavresample", LIBAVRESAMPLE_VERSION_INT, avresample_version());
#endif
#if HAVE_LIBSWRESAMPLE
    print_version(log, v, "libswresample", LIBSWRESAMPLE_VERSION_INT, swresample_version());
#endif
}