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mpv/mpvcore/av_log.c

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av_log callback handling overhaul Move av_log callback handling from vd_ffmpeg.c to a new file av_log.c and install the callback immediately when starting the program. Main functionality improvements of the new code: - The old version only installed the callback when opening an FFmpeg video decoder. If nothing had triggered that then av_log() messages from other sources (libavformat, audio decoding, swscale usage) bypassed MPlayer's output system completely. Now the callback is always installed. - Current av_log message severity levels are handled correctly. The old code used MSGL_ERR for some messages that should be MSGL_V. - Message type is now set for libavformat contexts (MSGT_DEMUXER / MSGT_MUXER). - The old code did "mp_msg_test(type, mp_level)" before actually determining the type, so that it always used MSGT_FIXME. This led to some messages being incorrectly dropped in case the user had specified module-specific verbosity levels. The old check in question was originally motivated by performance problems when there were a lot of callbacks; however it's not clear whether the part about it skipping the type determination was intentional (most of the performance problems must have come from the way the original code used snprintf) and in my tests current FFmpeg libraries have not generated unreasonable amounts of callbacks anyway.
2009-10-31 21:03:48 +00:00
/*
* 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>
cleanup: avoid various GCC warnings
2011-03-07 20:50:45 +00:00
#include "av_log.h"
av_log callback handling overhaul Move av_log callback handling from vd_ffmpeg.c to a new file av_log.c and install the callback immediately when starting the program. Main functionality improvements of the new code: - The old version only installed the callback when opening an FFmpeg video decoder. If nothing had triggered that then av_log() messages from other sources (libavformat, audio decoding, swscale usage) bypassed MPlayer's output system completely. Now the callback is always installed. - Current av_log message severity levels are handled correctly. The old code used MSGL_ERR for some messages that should be MSGL_V. - Message type is now set for libavformat contexts (MSGT_DEMUXER / MSGT_MUXER). - The old code did "mp_msg_test(type, mp_level)" before actually determining the type, so that it always used MSGT_FIXME. This led to some messages being incorrectly dropped in case the user had specified module-specific verbosity levels. The old check in question was originally motivated by performance problems when there were a lot of callbacks; however it's not clear whether the part about it skipping the type determination was intentional (most of the performance problems must have come from the way the original code used snprintf) and in my tests current FFmpeg libraries have not generated unreasonable amounts of callbacks anyway.
2009-10-31 21:03:48 +00:00
#include "config.h"
core: move contents to mpvcore (2/2) Followup commit. Fixes all the files references.
2013-08-06 20:41:30 +00:00
#include "mpvcore/mp_msg.h"
terminal output: show libav version numbers in verbose mode
2011-10-01 17:03:49 +00:00
#include <libavutil/avutil.h>
av_log callback handling overhaul Move av_log callback handling from vd_ffmpeg.c to a new file av_log.c and install the callback immediately when starting the program. Main functionality improvements of the new code: - The old version only installed the callback when opening an FFmpeg video decoder. If nothing had triggered that then av_log() messages from other sources (libavformat, audio decoding, swscale usage) bypassed MPlayer's output system completely. Now the callback is always installed. - Current av_log message severity levels are handled correctly. The old code used MSGL_ERR for some messages that should be MSGL_V. - Message type is now set for libavformat contexts (MSGT_DEMUXER / MSGT_MUXER). - The old code did "mp_msg_test(type, mp_level)" before actually determining the type, so that it always used MSGT_FIXME. This led to some messages being incorrectly dropped in case the user had specified module-specific verbosity levels. The old check in question was originally motivated by performance problems when there were a lot of callbacks; however it's not clear whether the part about it skipping the type determination was intentional (most of the performance problems must have come from the way the original code used snprintf) and in my tests current FFmpeg libraries have not generated unreasonable amounts of callbacks anyway.
2009-10-31 21:03:48 +00:00
#include <libavutil/log.h>
#include <libavcodec/avcodec.h>
#include <libavformat/avformat.h>
terminal output: show libav version numbers in verbose mode
2011-10-01 17:03:49 +00:00
#include <libswscale/swscale.h>
av_log callback handling overhaul Move av_log callback handling from vd_ffmpeg.c to a new file av_log.c and install the callback immediately when starting the program. Main functionality improvements of the new code: - The old version only installed the callback when opening an FFmpeg video decoder. If nothing had triggered that then av_log() messages from other sources (libavformat, audio decoding, swscale usage) bypassed MPlayer's output system completely. Now the callback is always installed. - Current av_log message severity levels are handled correctly. The old code used MSGL_ERR for some messages that should be MSGL_V. - Message type is now set for libavformat contexts (MSGT_DEMUXER / MSGT_MUXER). - The old code did "mp_msg_test(type, mp_level)" before actually determining the type, so that it always used MSGT_FIXME. This led to some messages being incorrectly dropped in case the user had specified module-specific verbosity levels. The old check in question was originally motivated by performance problems when there were a lot of callbacks; however it's not clear whether the part about it skipping the type determination was intentional (most of the performance problems must have come from the way the original code used snprintf) and in my tests current FFmpeg libraries have not generated unreasonable amounts of callbacks anyway.
2009-10-31 21:03:48 +00:00
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
#include <libavdevice/avdevice.h>
#endif
vf_lavfi: add libavfilter bridge Requires recent FFmpeg/Libav git versions. Earlier versions will not be supported, as the API is different. (A libavfilter version that uses AVFrame instead of AVFilterBuffer is needed.) Note that this is sort of useless, because the option parser prevents you from making use of the full libavfilter graph syntax. This has to be fixed later. Most of the filter creation code (half of the config() function) has been taken from avplay.c. This code is not based on MPlayer's vf_lavfi. The MPlayer code doesn't compile as it hasn't been updated through multiple libavfilter API changes, making it completely useless as a starting point.
2013-03-10 23:16:34 +00:00
#ifdef CONFIG_LIBAVFILTER
#include <libavfilter/avfilter.h>
#endif
av_log callback handling overhaul Move av_log callback handling from vd_ffmpeg.c to a new file av_log.c and install the callback immediately when starting the program. Main functionality improvements of the new code: - The old version only installed the callback when opening an FFmpeg video decoder. If nothing had triggered that then av_log() messages from other sources (libavformat, audio decoding, swscale usage) bypassed MPlayer's output system completely. Now the callback is always installed. - Current av_log message severity levels are handled correctly. The old code used MSGL_ERR for some messages that should be MSGL_V. - Message type is now set for libavformat contexts (MSGT_DEMUXER / MSGT_MUXER). - The old code did "mp_msg_test(type, mp_level)" before actually determining the type, so that it always used MSGT_FIXME. This led to some messages being incorrectly dropped in case the user had specified module-specific verbosity levels. The old check in question was originally motivated by performance problems when there were a lot of callbacks; however it's not clear whether the part about it skipping the type determination was intentional (most of the performance problems must have come from the way the original code used snprintf) and in my tests current FFmpeg libraries have not generated unreasonable amounts of callbacks anyway.
2009-10-31 21:03:48 +00:00
static int av_log_level_to_mp_level(int av_level)
{
av_log: map libav* debug messages to MSGL_DBG2 Map libav* messages with verbosity value higher than AV_LOG_VERBOSE (likely to be AV_LOG_DEBUG) to MSGL_DBG2 instead of MSGL_V. Before MSGL_V was used for everything above AV_LOG_INFO.
2011-06-26 02:10:12 +00:00
if (av_level > AV_LOG_VERBOSE)
return MSGL_DBG2;
av_log callback handling overhaul Move av_log callback handling from vd_ffmpeg.c to a new file av_log.c and install the callback immediately when starting the program. Main functionality improvements of the new code: - The old version only installed the callback when opening an FFmpeg video decoder. If nothing had triggered that then av_log() messages from other sources (libavformat, audio decoding, swscale usage) bypassed MPlayer's output system completely. Now the callback is always installed. - Current av_log message severity levels are handled correctly. The old code used MSGL_ERR for some messages that should be MSGL_V. - Message type is now set for libavformat contexts (MSGT_DEMUXER / MSGT_MUXER). - The old code did "mp_msg_test(type, mp_level)" before actually determining the type, so that it always used MSGT_FIXME. This led to some messages being incorrectly dropped in case the user had specified module-specific verbosity levels. The old check in question was originally motivated by performance problems when there were a lot of callbacks; however it's not clear whether the part about it skipping the type determination was intentional (most of the performance problems must have come from the way the original code used snprintf) and in my tests current FFmpeg libraries have not generated unreasonable amounts of callbacks anyway.
2009-10-31 21:03:48 +00:00
if (av_level > AV_LOG_INFO)
return MSGL_V;
if (av_level > AV_LOG_WARNING)
return MSGL_INFO;
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;
av_log: don't crash if called with NULL AVClass At least libavformat mpegts demuxer may give bad parameters with NULL AVClass to the av_log callback. Check for this and print a warning instead of crashing.
2011-08-14 23:58:51 +00:00
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;
}
av_log callback handling overhaul Move av_log callback handling from vd_ffmpeg.c to a new file av_log.c and install the callback immediately when starting the program. Main functionality improvements of the new code: - The old version only installed the callback when opening an FFmpeg video decoder. If nothing had triggered that then av_log() messages from other sources (libavformat, audio decoding, swscale usage) bypassed MPlayer's output system completely. Now the callback is always installed. - Current av_log message severity levels are handled correctly. The old code used MSGL_ERR for some messages that should be MSGL_V. - Message type is now set for libavformat contexts (MSGT_DEMUXER / MSGT_MUXER). - The old code did "mp_msg_test(type, mp_level)" before actually determining the type, so that it always used MSGT_FIXME. This led to some messages being incorrectly dropped in case the user had specified module-specific verbosity levels. The old check in question was originally motivated by performance problems when there were a lot of callbacks; however it's not clear whether the part about it skipping the type determination was intentional (most of the performance problems must have come from the way the original code used snprintf) and in my tests current FFmpeg libraries have not generated unreasonable amounts of callbacks anyway.
2009-10-31 21:03:48 +00:00
if (!strcmp(avc->class_name, "AVCodecContext")) {
AVCodecContext *s = ptr;
if (s->codec) {
Update libav API uses Update various code to use newer alternatives instead of deprecated functions/fields that are being dropped at libav API bump. An exception is avcodec_thread_init() which is being dropped even though it's still _necessary_ with fairly recent libav versions, so there's no good alternative which would work with both those recent versions and latest libavcodec. I think there are grounds to consider the drop premature and revert it for now; if that doesn't happen I'll add a version-test #if check around it later.
2011-04-19 23:59:45 +00:00
if (s->codec->type == AVMEDIA_TYPE_AUDIO) {
av_log callback handling overhaul Move av_log callback handling from vd_ffmpeg.c to a new file av_log.c and install the callback immediately when starting the program. Main functionality improvements of the new code: - The old version only installed the callback when opening an FFmpeg video decoder. If nothing had triggered that then av_log() messages from other sources (libavformat, audio decoding, swscale usage) bypassed MPlayer's output system completely. Now the callback is always installed. - Current av_log message severity levels are handled correctly. The old code used MSGL_ERR for some messages that should be MSGL_V. - Message type is now set for libavformat contexts (MSGT_DEMUXER / MSGT_MUXER). - The old code did "mp_msg_test(type, mp_level)" before actually determining the type, so that it always used MSGT_FIXME. This led to some messages being incorrectly dropped in case the user had specified module-specific verbosity levels. The old check in question was originally motivated by performance problems when there were a lot of callbacks; however it's not clear whether the part about it skipping the type determination was intentional (most of the performance problems must have come from the way the original code used snprintf) and in my tests current FFmpeg libraries have not generated unreasonable amounts of callbacks anyway.
2009-10-31 21:03:48 +00:00
if (s->codec->decode)
return MSGT_DECAUDIO;
Update libav API uses Update various code to use newer alternatives instead of deprecated functions/fields that are being dropped at libav API bump. An exception is avcodec_thread_init() which is being dropped even though it's still _necessary_ with fairly recent libav versions, so there's no good alternative which would work with both those recent versions and latest libavcodec. I think there are grounds to consider the drop premature and revert it for now; if that doesn't happen I'll add a version-test #if check around it later.
2011-04-19 23:59:45 +00:00
} else if (s->codec->type == AVMEDIA_TYPE_VIDEO) {
av_log callback handling overhaul Move av_log callback handling from vd_ffmpeg.c to a new file av_log.c and install the callback immediately when starting the program. Main functionality improvements of the new code: - The old version only installed the callback when opening an FFmpeg video decoder. If nothing had triggered that then av_log() messages from other sources (libavformat, audio decoding, swscale usage) bypassed MPlayer's output system completely. Now the callback is always installed. - Current av_log message severity levels are handled correctly. The old code used MSGL_ERR for some messages that should be MSGL_V. - Message type is now set for libavformat contexts (MSGT_DEMUXER / MSGT_MUXER). - The old code did "mp_msg_test(type, mp_level)" before actually determining the type, so that it always used MSGT_FIXME. This led to some messages being incorrectly dropped in case the user had specified module-specific verbosity levels. The old check in question was originally motivated by performance problems when there were a lot of callbacks; however it's not clear whether the part about it skipping the type determination was intentional (most of the performance problems must have come from the way the original code used snprintf) and in my tests current FFmpeg libraries have not generated unreasonable amounts of callbacks anyway.
2009-10-31 21:03:48 +00:00
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;
}
av_log: change how ffmpeg log messages are formatted Don't print the ffmpeg context pointer as %p. This is usually useless and confusing. Prefix all messages with "ffmpeg" to make clear that ffmpeg is printing these messages, and not us. If libavcodec is from Libav, use "libav" as prefix instead. (In theory, FFmpeg/Libav libraries could be mixed, but I don't think that is actually possible in practice.)
2013-06-22 18:31:19 +00:00
#if LIBAVCODEC_VERSION_MICRO >= 100
#define LIB_PREFIX "ffmpeg"
#else
#define LIB_PREFIX "libav"
#endif
av_log: restore handling of prefixes and line breaks Commit 9a83d03 accidentally removed this. (Overlooked "static"?) The handling of this rather sucks. Maybe a better solution will be possible once we clean up the mp_msg code.
2013-07-22 12:48:51 +00:00
static bool print_prefix = true;
av_log callback handling overhaul Move av_log callback handling from vd_ffmpeg.c to a new file av_log.c and install the callback immediately when starting the program. Main functionality improvements of the new code: - The old version only installed the callback when opening an FFmpeg video decoder. If nothing had triggered that then av_log() messages from other sources (libavformat, audio decoding, swscale usage) bypassed MPlayer's output system completely. Now the callback is always installed. - Current av_log message severity levels are handled correctly. The old code used MSGL_ERR for some messages that should be MSGL_V. - Message type is now set for libavformat contexts (MSGT_DEMUXER / MSGT_MUXER). - The old code did "mp_msg_test(type, mp_level)" before actually determining the type, so that it always used MSGT_FIXME. This led to some messages being incorrectly dropped in case the user had specified module-specific verbosity levels. The old check in question was originally motivated by performance problems when there were a lot of callbacks; however it's not clear whether the part about it skipping the type determination was intentional (most of the performance problems must have come from the way the original code used snprintf) and in my tests current FFmpeg libraries have not generated unreasonable amounts of callbacks anyway.
2009-10-31 21:03:48 +00:00
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;
av_log: restore handling of prefixes and line breaks Commit 9a83d03 accidentally removed this. (Overlooked "static"?) The handling of this rather sucks. Maybe a better solution will be possible once we clean up the mp_msg code.
2013-07-22 12:48:51 +00:00
if (print_prefix) {
mp_msg(type, mp_level, "[%s/%s] ", LIB_PREFIX,
avc ? avc->item_name(ptr) : "?");
}
print_prefix = fmt[strlen(fmt) - 1] == '\n';
av_log callback handling overhaul Move av_log callback handling from vd_ffmpeg.c to a new file av_log.c and install the callback immediately when starting the program. Main functionality improvements of the new code: - The old version only installed the callback when opening an FFmpeg video decoder. If nothing had triggered that then av_log() messages from other sources (libavformat, audio decoding, swscale usage) bypassed MPlayer's output system completely. Now the callback is always installed. - Current av_log message severity levels are handled correctly. The old code used MSGL_ERR for some messages that should be MSGL_V. - Message type is now set for libavformat contexts (MSGT_DEMUXER / MSGT_MUXER). - The old code did "mp_msg_test(type, mp_level)" before actually determining the type, so that it always used MSGT_FIXME. This led to some messages being incorrectly dropped in case the user had specified module-specific verbosity levels. The old check in question was originally motivated by performance problems when there were a lot of callbacks; however it's not clear whether the part about it skipping the type determination was intentional (most of the performance problems must have come from the way the original code used snprintf) and in my tests current FFmpeg libraries have not generated unreasonable amounts of callbacks anyway.
2009-10-31 21:03:48 +00:00
mp_msg_va(type, mp_level, fmt, vl);
}
cleanup: do libav* initialization on startup Do the global initialization of libavcodec and libavformat (avcodec_register_all(), av_register_all()) immediately on program startup and remove the initialization calls from various individual modules that use libavcodec/libavformat functionality.
2011-07-17 21:28:22 +00:00
void init_libav(void)
av_log callback handling overhaul Move av_log callback handling from vd_ffmpeg.c to a new file av_log.c and install the callback immediately when starting the program. Main functionality improvements of the new code: - The old version only installed the callback when opening an FFmpeg video decoder. If nothing had triggered that then av_log() messages from other sources (libavformat, audio decoding, swscale usage) bypassed MPlayer's output system completely. Now the callback is always installed. - Current av_log message severity levels are handled correctly. The old code used MSGL_ERR for some messages that should be MSGL_V. - Message type is now set for libavformat contexts (MSGT_DEMUXER / MSGT_MUXER). - The old code did "mp_msg_test(type, mp_level)" before actually determining the type, so that it always used MSGT_FIXME. This led to some messages being incorrectly dropped in case the user had specified module-specific verbosity levels. The old check in question was originally motivated by performance problems when there were a lot of callbacks; however it's not clear whether the part about it skipping the type determination was intentional (most of the performance problems must have come from the way the original code used snprintf) and in my tests current FFmpeg libraries have not generated unreasonable amounts of callbacks anyway.
2009-10-31 21:03:48 +00:00
{
cleanup: do libav* initialization on startup Do the global initialization of libavcodec and libavformat (avcodec_register_all(), av_register_all()) immediately on program startup and remove the initialization calls from various individual modules that use libavcodec/libavformat functionality.
2011-07-17 21:28:22 +00:00
av_log_set_callback(mp_msg_av_log_callback);
avcodec_register_all();
av_register_all();
stream_ffmpeg: fix broken line from 30afc64532ff61 Commit 30afc64532ff61 ("stream_ffmpeg: switch to libavformat avio API") somehow contained a nonsense line which broke the control() function. Fix. Also add avformat_network_init() to central libav initialization code to avoid warnings.
2012-04-17 22:27:55 +00:00
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
vf_lavfi: add libavfilter bridge Requires recent FFmpeg/Libav git versions. Earlier versions will not be supported, as the API is different. (A libavfilter version that uses AVFrame instead of AVFilterBuffer is needed.) Note that this is sort of useless, because the option parser prevents you from making use of the full libavfilter graph syntax. This has to be fixed later. Most of the filter creation code (half of the config() function) has been taken from avplay.c. This code is not based on MPlayer's vf_lavfi. The MPlayer code doesn't compile as it hasn't been updated through multiple libavfilter API changes, making it completely useless as a starting point.
2013-03-10 23:16:34 +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
av_log callback handling overhaul Move av_log callback handling from vd_ffmpeg.c to a new file av_log.c and install the callback immediately when starting the program. Main functionality improvements of the new code: - The old version only installed the callback when opening an FFmpeg video decoder. If nothing had triggered that then av_log() messages from other sources (libavformat, audio decoding, swscale usage) bypassed MPlayer's output system completely. Now the callback is always installed. - Current av_log message severity levels are handled correctly. The old code used MSGL_ERR for some messages that should be MSGL_V. - Message type is now set for libavformat contexts (MSGT_DEMUXER / MSGT_MUXER). - The old code did "mp_msg_test(type, mp_level)" before actually determining the type, so that it always used MSGT_FIXME. This led to some messages being incorrectly dropped in case the user had specified module-specific verbosity levels. The old check in question was originally motivated by performance problems when there were a lot of callbacks; however it's not clear whether the part about it skipping the type determination was intentional (most of the performance problems must have come from the way the original code used snprintf) and in my tests current FFmpeg libraries have not generated unreasonable amounts of callbacks anyway.
2009-10-31 21:03:48 +00:00
}
terminal output: show libav version numbers in verbose mode
2011-10-01 17:03:49 +00:00
#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());
}