2b2f2f65f3
These fields will allow the mpegts demuxer to expose details about the PMT/program which created the AVProgram and its AVStreams. In mpegts, a PMT which advertises streams has a version number which can be incremented at any time. When the version changes, the pids which correspond to each of it's streams can also change. Since ffmpeg creates a new AVStream per pid by default, an API user needs the ability to (a) detect when the PMT changed, and (b) tell which AVStream were added to replace earlier streams. This has been a long-standing issue with ffmpeg's handling of mpegts streams with PMT changes, and I found two related patches in the wild that attempt to solve the same problem: The first is in MythTV's ffmpeg fork, where they added a void (*streams_changed)(void*); to AVFormatContext and call it from their fork of the mpegts demuxer whenever the PMT changes. The second was proposed by XBMC in https://ffmpeg.org/pipermail/ffmpeg-devel/2012-December/135036.html, where they created a new AVMEDIA_TYPE_DATA stream with id=0 and attempted to send packets to it whenever the PMT changed. Signed-off-by: Aman Gupta <aman@tmm1.net>
106 lines
3.8 KiB
C
106 lines
3.8 KiB
C
/*
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* Version macros.
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*
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* This file is part of FFmpeg.
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*
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* FFmpeg is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* FFmpeg is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with FFmpeg; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#ifndef AVFORMAT_VERSION_H
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#define AVFORMAT_VERSION_H
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/**
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* @file
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* @ingroup libavf
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* Libavformat version macros
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*/
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#include "libavutil/version.h"
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// Major bumping may affect Ticket5467, 5421, 5451(compatibility with Chromium)
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// Also please add any ticket numbers that you believe might be affected here
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#define LIBAVFORMAT_VERSION_MAJOR 58
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#define LIBAVFORMAT_VERSION_MINOR 15
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#define LIBAVFORMAT_VERSION_MICRO 100
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#define LIBAVFORMAT_VERSION_INT AV_VERSION_INT(LIBAVFORMAT_VERSION_MAJOR, \
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LIBAVFORMAT_VERSION_MINOR, \
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LIBAVFORMAT_VERSION_MICRO)
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#define LIBAVFORMAT_VERSION AV_VERSION(LIBAVFORMAT_VERSION_MAJOR, \
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LIBAVFORMAT_VERSION_MINOR, \
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LIBAVFORMAT_VERSION_MICRO)
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#define LIBAVFORMAT_BUILD LIBAVFORMAT_VERSION_INT
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#define LIBAVFORMAT_IDENT "Lavf" AV_STRINGIFY(LIBAVFORMAT_VERSION)
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/**
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* FF_API_* defines may be placed below to indicate public API that will be
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* dropped at a future version bump. The defines themselves are not part of
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* the public API and may change, break or disappear at any time.
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*
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* @note, when bumping the major version it is recommended to manually
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* disable each FF_API_* in its own commit instead of disabling them all
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* at once through the bump. This improves the git bisect-ability of the change.
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*
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*/
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#ifndef FF_API_COMPUTE_PKT_FIELDS2
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#define FF_API_COMPUTE_PKT_FIELDS2 (LIBAVFORMAT_VERSION_MAJOR < 59)
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#endif
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#ifndef FF_API_OLD_OPEN_CALLBACKS
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#define FF_API_OLD_OPEN_CALLBACKS (LIBAVFORMAT_VERSION_MAJOR < 59)
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#endif
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#ifndef FF_API_LAVF_AVCTX
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#define FF_API_LAVF_AVCTX (LIBAVFORMAT_VERSION_MAJOR < 59)
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#endif
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#ifndef FF_API_HTTP_USER_AGENT
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#define FF_API_HTTP_USER_AGENT (LIBAVFORMAT_VERSION_MAJOR < 59)
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#endif
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#ifndef FF_API_HLS_WRAP
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#define FF_API_HLS_WRAP (LIBAVFORMAT_VERSION_MAJOR < 59)
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#endif
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#ifndef FF_API_LAVF_KEEPSIDE_FLAG
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#define FF_API_LAVF_KEEPSIDE_FLAG (LIBAVFORMAT_VERSION_MAJOR < 59)
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#endif
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#ifndef FF_API_OLD_ROTATE_API
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#define FF_API_OLD_ROTATE_API (LIBAVFORMAT_VERSION_MAJOR < 59)
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#endif
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#ifndef FF_API_FORMAT_GET_SET
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#define FF_API_FORMAT_GET_SET (LIBAVFORMAT_VERSION_MAJOR < 59)
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#endif
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#ifndef FF_API_OLD_AVIO_EOF_0
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#define FF_API_OLD_AVIO_EOF_0 (LIBAVFORMAT_VERSION_MAJOR < 59)
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#endif
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#ifndef FF_API_LAVF_FFSERVER
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#define FF_API_LAVF_FFSERVER (LIBAVFORMAT_VERSION_MAJOR < 59)
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#endif
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#ifndef FF_API_FORMAT_FILENAME
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#define FF_API_FORMAT_FILENAME (LIBAVFORMAT_VERSION_MAJOR < 59)
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#endif
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#ifndef FF_API_OLD_RTSP_OPTIONS
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#define FF_API_OLD_RTSP_OPTIONS (LIBAVFORMAT_VERSION_MAJOR < 59)
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#endif
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#ifndef FF_API_NEXT
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#define FF_API_NEXT (LIBAVFORMAT_VERSION_MAJOR < 59)
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#endif
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#ifndef FF_API_DASH_MIN_SEG_DURATION
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#define FF_API_DASH_MIN_SEG_DURATION (LIBAVFORMAT_VERSION_MAJOR < 59)
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#endif
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#ifndef FF_API_R_FRAME_RATE
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#define FF_API_R_FRAME_RATE 1
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#endif
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#endif /* AVFORMAT_VERSION_H */
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