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🎥 Command line media player
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123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130131132133134135136137138139140141142143144145146147148149150151152153154155156157158159160161162163164165166167168169170171172173174175176177178179180181182183184185186187188189190191192193194195196197198199200201202203204205206207208209210211212213214215216217218219220221222223224225/* * 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 <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>#include <libavfilter/avfilter.h>
#if HAVE_LIBAVDEVICE#include <libavdevice/avdevice.h>#endif
#if HAVE_LIBAV#include <libavresample/avresample.h>#else#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_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 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)) { char buffer[4096] = ""; int pos = 0; const char *prefix = avc ? avc->item_name(ptr) : NULL; if (log_print_prefix && prefix) pos = snprintf(buffer, sizeof(buffer), "%s: ", prefix); log_print_prefix = fmt[strlen(fmt) - 1] == '\n';
pos = MPMIN(MPMAX(pos, 0), sizeof(buffer)); vsnprintf(buffer + pos, sizeof(buffer) - pos, fmt, vl);
mp_msg(log, mp_level, "%s", buffer); }
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(); avfilter_register_all();
#if HAVE_LIBAVDEVICE avdevice_register_all();#endif}
void uninit_libav(struct mpv_global *global){ pthread_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); } pthread_mutex_unlock(&log_lock);}
#define V(x) (x)>>16, (x)>>8 & 255, (x) & 255
struct lib { const char *name; unsigned buildv; unsigned runv;};
bool 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()}, {"libavfilter", LIBAVFILTER_VERSION_INT, avfilter_version()},#if HAVE_LIBAV {"libavresample", LIBAVRESAMPLE_VERSION_INT, avresample_version()},#else {"libswresample", LIBSWRESAMPLE_VERSION_INT, swresample_version()},#endif };
mp_msg(log, v, "%s library versions:\n", LIB_PREFIX);
bool mismatch = 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; } mp_msg(log, v, "\n"); }
mp_msg(log, v, "%s version: %s\n", LIB_PREFIX, av_version_info());
return !mismatch;}
#undef V