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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 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, mp_level)) {
if (log_print_prefix)
mp_msg(log, mp_level, "%s: ", avc ? avc->item_name(ptr) : "?");
log_print_prefix = fmt[strlen(fmt) - 1] == '\n';
mp_msg_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
struct lib {
const char *name;
unsigned buildv;
unsigned runv;
};
void print_libav_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()},
#if HAVE_LIBAVFILTER
{"libavfilter", LIBAVFILTER_VERSION_INT, avfilter_version()},
#endif
#if HAVE_LIBAVRESAMPLE
{"libavresample", LIBAVRESAMPLE_VERSION_INT, avresample_version()},
#endif
#if HAVE_LIBSWRESAMPLE
{"libswresample", LIBSWRESAMPLE_VERSION_INT, swresample_version()},
#endif
};
mp_msg(log, v, "%s library versions:\n", LIB_PREFIX);
bool mismatch = false;
bool broken = false;
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));
mismatch = true;
broken |= ((l->buildv & 255) >= 100) != ((l->runv & 255) >= 100);
}
mp_msg(log, v, "\n");
}
// This just won't work. It's 100% broken.
if (broken) {
mp_fatal(log, "mpv was compiled and linked against a mixture of Libav "
"and FFmpeg versions. This won't work and will most likely "
"crash at some point. Exiting.\n");
exit(42);
}
// We don't "really" support mismatched libraries, but if you like to
// suffer, you're free to enjoy the terrible aspects of dynamic linking.
// In particular, we don't use all these crazy accessors ffmpeg wants us
// to use in order to be ABI compatible after Libav merges - because that
// would make our code incompatible to Libav. It's madness.
if (mismatch) {
mp_warn(log, "Warning: mpv was compiled against a different version of "
"%s than the shared\nlibrary it is linked against. This can "
"expose subtle ABI compatibility issues\nand can lead to "
"misbehavior and crashes.\n", LIB_PREFIX);
}
}
#undef V
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