mpv/mpvcore/av_log.c

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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 <stdbool.h>
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#include "av_log.h"
#include "config.h"
#include "mpvcore/mp_msg.h"
#include <libavutil/avutil.h>
#include <libavutil/log.h>
#include <libavcodec/avcodec.h>
#include <libavformat/avformat.h>
#include <libswscale/swscale.h>
demux_lavf: add support for libavdevice libavdevice supports various "special" video and audio inputs, such as screen-capture or libavfilter filter graphs. libavdevice inputs are implemented as demuxers. They don't use the custom stream callbacks (in AVFormatContext.pb). Instead, input parameters are passed as filename. This means the mpv stream layer has to be disabled. Do this by adding the pseudo stream handler avdevice://, whose only purpose is passing the filename to demux_lavf, without actually doing anything. Change the logic how the filename is passed to libavformat. Remove handling of the filename from demux_open_lavf() and move it to lavf_check_file(). (This also fixes a possible bug when skipping the "lavf://" prefix.) libavdevice now can be invoked by specifying demuxer and args as in: mpv avdevice://demuxer:args The args are passed as filename to libavformat. When using libavdevice demuxers, their actual meaning is highly implementation specific. They don't refer to actual filenames. Note: libavdevice is disabled by default. There is one problem: libavdevice pulls in libavfilter, which in turn causes symbol clashes with mpv internals. The problem is that libavfilter includes a mplayer filter bridge, which is used to interface with a set of nearly unmodified mplayer filters copied into libavfilter. This filter bridge uses the same symbol names as mplayer/mpv's filter chain, which results in symbol clashes at link-time. This can be prevented by building ffmpeg with --disable-filter=mp, but unfortunately this is not the default. This means linking to libavdevice (which in turn forces linking with libavfilter by default) must be disabled. We try doing this by compiling a test file that defines one of the clashing symbols (vf_mpi_clear). To enable libavdevice input, ffmpeg should be built with the options: --disable-filter=mp and mpv with: --enable-libavdevice Originally, I tried to auto-detect it. But the resulting complications in configure did't seem worth the trouble.
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#ifdef CONFIG_LIBAVDEVICE
#include <libavdevice/avdevice.h>
#endif
#ifdef CONFIG_LIBAVFILTER
#include <libavfilter/avfilter.h>
#endif
static int av_log_level_to_mp_level(int av_level)
{
if (av_level > AV_LOG_VERBOSE)
return MSGL_DBG2;
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 int extract_msg_type_from_ctx(void *ptr)
{
if (!ptr)
return MSGT_FIXME;
AVClass *avc = *(AVClass **)ptr;
if (!avc) {
mp_msg(MSGT_FIXME, MSGL_WARN,
"av_log callback called with bad parameters (NULL AVClass).\n"
"This is a bug in one of Libav/FFmpeg libraries used.\n");
return MSGT_FIXME;
}
if (!strcmp(avc->class_name, "AVCodecContext")) {
AVCodecContext *s = ptr;
if (s->codec) {
if (s->codec->type == AVMEDIA_TYPE_AUDIO) {
if (s->codec->decode)
return MSGT_DECAUDIO;
} else if (s->codec->type == AVMEDIA_TYPE_VIDEO) {
if (s->codec->decode)
return MSGT_DECVIDEO;
}
// FIXME subtitles, encoders
// What msgt for them? There is nothing appropriate...
}
return MSGT_FIXME;
}
if (!strcmp(avc->class_name, "AVFormatContext")) {
AVFormatContext *s = ptr;
if (s->iformat)
return MSGT_DEMUXER;
else if (s->oformat)
return MSGT_MUXER;
return MSGT_FIXME;
}
return MSGT_FIXME;
}
#if LIBAVCODEC_VERSION_MICRO >= 100
#define LIB_PREFIX "ffmpeg"
#else
#define LIB_PREFIX "libav"
#endif
static bool print_prefix = true;
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);
int type = extract_msg_type_from_ctx(ptr);
if (!mp_msg_test(type, mp_level))
return;
if (print_prefix) {
mp_msg(type, mp_level, "[%s/%s] ", LIB_PREFIX,
avc ? avc->item_name(ptr) : "?");
}
print_prefix = fmt[strlen(fmt) - 1] == '\n';
mp_msg_va(type, mp_level, fmt, vl);
}
void init_libav(void)
{
av_log_set_callback(mp_msg_av_log_callback);
avcodec_register_all();
av_register_all();
avformat_network_init();
demux_lavf: add support for libavdevice libavdevice supports various "special" video and audio inputs, such as screen-capture or libavfilter filter graphs. libavdevice inputs are implemented as demuxers. They don't use the custom stream callbacks (in AVFormatContext.pb). Instead, input parameters are passed as filename. This means the mpv stream layer has to be disabled. Do this by adding the pseudo stream handler avdevice://, whose only purpose is passing the filename to demux_lavf, without actually doing anything. Change the logic how the filename is passed to libavformat. Remove handling of the filename from demux_open_lavf() and move it to lavf_check_file(). (This also fixes a possible bug when skipping the "lavf://" prefix.) libavdevice now can be invoked by specifying demuxer and args as in: mpv avdevice://demuxer:args The args are passed as filename to libavformat. When using libavdevice demuxers, their actual meaning is highly implementation specific. They don't refer to actual filenames. Note: libavdevice is disabled by default. There is one problem: libavdevice pulls in libavfilter, which in turn causes symbol clashes with mpv internals. The problem is that libavfilter includes a mplayer filter bridge, which is used to interface with a set of nearly unmodified mplayer filters copied into libavfilter. This filter bridge uses the same symbol names as mplayer/mpv's filter chain, which results in symbol clashes at link-time. This can be prevented by building ffmpeg with --disable-filter=mp, but unfortunately this is not the default. This means linking to libavdevice (which in turn forces linking with libavfilter by default) must be disabled. We try doing this by compiling a test file that defines one of the clashing symbols (vf_mpi_clear). To enable libavdevice input, ffmpeg should be built with the options: --disable-filter=mp and mpv with: --enable-libavdevice Originally, I tried to auto-detect it. But the resulting complications in configure did't seem worth the trouble.
2012-11-30 17:41:04 +00:00
#ifdef CONFIG_LIBAVFILTER
avfilter_register_all();
#endif
demux_lavf: add support for libavdevice libavdevice supports various "special" video and audio inputs, such as screen-capture or libavfilter filter graphs. libavdevice inputs are implemented as demuxers. They don't use the custom stream callbacks (in AVFormatContext.pb). Instead, input parameters are passed as filename. This means the mpv stream layer has to be disabled. Do this by adding the pseudo stream handler avdevice://, whose only purpose is passing the filename to demux_lavf, without actually doing anything. Change the logic how the filename is passed to libavformat. Remove handling of the filename from demux_open_lavf() and move it to lavf_check_file(). (This also fixes a possible bug when skipping the "lavf://" prefix.) libavdevice now can be invoked by specifying demuxer and args as in: mpv avdevice://demuxer:args The args are passed as filename to libavformat. When using libavdevice demuxers, their actual meaning is highly implementation specific. They don't refer to actual filenames. Note: libavdevice is disabled by default. There is one problem: libavdevice pulls in libavfilter, which in turn causes symbol clashes with mpv internals. The problem is that libavfilter includes a mplayer filter bridge, which is used to interface with a set of nearly unmodified mplayer filters copied into libavfilter. This filter bridge uses the same symbol names as mplayer/mpv's filter chain, which results in symbol clashes at link-time. This can be prevented by building ffmpeg with --disable-filter=mp, but unfortunately this is not the default. This means linking to libavdevice (which in turn forces linking with libavfilter by default) must be disabled. We try doing this by compiling a test file that defines one of the clashing symbols (vf_mpi_clear). To enable libavdevice input, ffmpeg should be built with the options: --disable-filter=mp and mpv with: --enable-libavdevice Originally, I tried to auto-detect it. But the resulting complications in configure did't seem worth the trouble.
2012-11-30 17:41:04 +00:00
#ifdef CONFIG_LIBAVDEVICE
avdevice_register_all();
#endif
}
#define V(x) (x)>>16, (x)>>8 & 255, (x) & 255
static void print_version(char *name, unsigned buildv, unsigned runv)
{
if (buildv == runv)
mp_msg(MSGT_CPLAYER, MSGL_V, "Compiled against %s version %d.%d.%d\n",
name, V(buildv));
else
mp_msg(MSGT_CPLAYER, MSGL_V, "Compiled against %s version %d.%d.%d "
"(runtime %d.%d.%d)\n", name, V(buildv), V(runv));
}
#undef V
void print_libav_versions(void)
{
print_version("libavutil", LIBAVUTIL_VERSION_INT, avutil_version());
print_version("libavcodec", LIBAVCODEC_VERSION_INT, avcodec_version());
print_version("libavformat", LIBAVFORMAT_VERSION_INT, avformat_version());
print_version("libswscale", LIBSWSCALE_VERSION_INT, swscale_version());
}