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/*
* av_log to mp_msg converter
* Copyright (C) 2006 Michael Niedermayer
* Copyright (C) 2009 Uoti Urpala
*
* This file is part of mpv.
*
* mpv 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.
*
* mpv 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 mpv. If not, see <http://www.gnu.org/licenses/>.
*/
#include <stdlib.h>
#include <stdio.h>
#include <stdbool.h>
#include "av_log.h"
#include "common/common.h"
#include "common/global.h"
#include "common/msg.h"
#include "config.h"
#include "misc/bstr.h"
#include "osdep/threads.h"
#include <libavutil/avutil.h>
#include <libavutil/log.h>
#include <libavutil/version.h>
#include <libavcodec/avcodec.h>
#include <libavcodec/version.h>
#include <libavformat/avformat.h>
#include <libavformat/version.h>
#include <libswresample/swresample.h>
#include <libswresample/version.h>
#include <libswscale/swscale.h>
#include <libswscale/version.h>
#include <libavfilter/avfilter.h>
#include <libavfilter/version.h>
#if HAVE_LIBAVDEVICE
#include <libavdevice/avdevice.h>
#endif
// Needed because the av_log callback does not provide a library-safe message
// callback.
static mp_static_mutex log_lock = MP_STATIC_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 bstr log_buffer;
static int av_log_level_to_mp_level(int av_level)
{
if (av_level > AV_LOG_VERBOSE)
return MSGL_TRACE;
if (av_level > AV_LOG_INFO)
return MSGL_DEBUG;
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 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 (av_codec_is_decoder(s->codec))
return log_decaudio;
} else if (s->codec->type == AVMEDIA_TYPE_VIDEO) {
if (av_codec_is_decoder(s->codec))
return log_decvideo;
}
}
}
if (!strcmp(avc->class_name, "AVFormatContext")) {
AVFormatContext *s = ptr;
if (s->iformat)
return log_demuxer;
}
return log_root;
}
static const char *avclass_item_name(void *obj, const AVClass *avc)
{
return (avc->item_name ? avc->item_name : av_default_item_name)(obj);
}
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.
mp_mutex_lock(&log_lock);
if (!log_mpv_instance) {
mp_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, mp_level)) {
log_buffer.len = 0;
bstr_xappend_vasprintf(log_root, &log_buffer, fmt, vl);
if (!log_buffer.len)
goto done;
const char *prefix = avc ? avclass_item_name(ptr, avc) : NULL;
if (log_print_prefix && prefix) {
mp_msg(log, mp_level, "%s: %.*s", prefix, BSTR_P(log_buffer));
} else {
mp_msg(log, mp_level, "%.*s", BSTR_P(log_buffer));
}
log_print_prefix = log_buffer.start[log_buffer.len - 1] == '\n';
}
done:
mp_mutex_unlock(&log_lock);
}
void init_libav(struct mpv_global *global)
{
mp_mutex_lock(&log_lock);
if (!log_mpv_instance) {
log_mpv_instance = global;
log_root = mp_log_new(NULL, global->log, "ffmpeg");
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");
log_buffer = (bstr){0};
av_log_set_callback(mp_msg_av_log_callback);
}
mp_mutex_unlock(&log_lock);
avformat_network_init();
#if HAVE_LIBAVDEVICE
avdevice_register_all();
#endif
}
void uninit_libav(struct mpv_global *global)
{
mp_mutex_lock(&log_lock);
if (log_mpv_instance == global) {
av_log_set_callback(av_log_default_callback);
log_mpv_instance = NULL;
talloc_free(log_root);
}
mp_mutex_unlock(&log_lock);
}
#define V(x) AV_VERSION_MAJOR(x), \
AV_VERSION_MINOR(x), \
AV_VERSION_MICRO(x)
struct lib {
const char *name;
unsigned buildv;
unsigned runv;
};
void check_library_versions(struct mp_log *log, int v)
{
const struct lib libs[] = {
{"libavutil", LIBAVUTIL_VERSION_INT, avutil_version()},
{"libavcodec", LIBAVCODEC_VERSION_INT, avcodec_version()},
{"libavformat", LIBAVFORMAT_VERSION_INT, avformat_version()},
{"libswscale", LIBSWSCALE_VERSION_INT, swscale_version()},
{"libavfilter", LIBAVFILTER_VERSION_INT, avfilter_version()},
{"libswresample", LIBSWRESAMPLE_VERSION_INT, swresample_version()},
};
mp_msg(log, v, "FFmpeg version: %s\n", av_version_info());
mp_msg(log, v, "FFmpeg library versions:\n");
for (int n = 0; n < MP_ARRAY_SIZE(libs); n++) {
const struct lib *l = &libs[n];
mp_msg(log, v, " %-15s %d.%d.%d", l->name, V(l->buildv));
if (l->buildv != l->runv)
mp_msg(log, v, " (runtime %d.%d.%d)", V(l->runv));
mp_msg(log, v, "\n");
if (l->buildv > l->runv ||
AV_VERSION_MAJOR(l->buildv) != AV_VERSION_MAJOR(l->runv))
{
fprintf(stderr, "%s: %d.%d.%d -> %d.%d.%d\n",
l->name, V(l->buildv), V(l->runv));
abort();
}
}
}
#undef V
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