b416517cce
MicroDVD files are normally frame-based (i.e. there are no absolute timestamps), but can have an optional frame rate header. If this header is missing, the timestamps depend on the frame rate of the video they were created for. The demuxer will use a fallback frame rate if it's missing from the header. Currently, applications using libavformat can't know whether the time base is based on the fallback value, or if a frame rate header was present. This commit introduces a subfps AVOption for MicroDVD, and the demuxer sets it if and only if a frame rate header was present. Signed-off-by: Clément Bœsch <u@pkh.me>
80 lines
2.8 KiB
C
80 lines
2.8 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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#define LIBAVFORMAT_VERSION_MAJOR 55
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#define LIBAVFORMAT_VERSION_MINOR 33
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#define LIBAVFORMAT_VERSION_MICRO 101
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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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#ifndef FF_API_REFERENCE_DTS
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#define FF_API_REFERENCE_DTS (LIBAVFORMAT_VERSION_MAJOR < 56)
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#endif
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#ifndef FF_API_ALLOC_OUTPUT_CONTEXT
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#define FF_API_ALLOC_OUTPUT_CONTEXT (LIBAVFORMAT_VERSION_MAJOR < 56)
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#endif
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#ifndef FF_API_FORMAT_PARAMETERS
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#define FF_API_FORMAT_PARAMETERS (LIBAVFORMAT_VERSION_MAJOR < 56)
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#endif
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#ifndef FF_API_NEW_STREAM
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#define FF_API_NEW_STREAM (LIBAVFORMAT_VERSION_MAJOR < 56)
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#endif
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#ifndef FF_API_SET_PTS_INFO
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#define FF_API_SET_PTS_INFO (LIBAVFORMAT_VERSION_MAJOR < 56)
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#endif
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#ifndef FF_API_CLOSE_INPUT_FILE
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#define FF_API_CLOSE_INPUT_FILE (LIBAVFORMAT_VERSION_MAJOR < 56)
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#endif
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#ifndef FF_API_READ_PACKET
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#define FF_API_READ_PACKET (LIBAVFORMAT_VERSION_MAJOR < 56)
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#endif
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#ifndef FF_API_ASS_SSA
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#define FF_API_ASS_SSA (LIBAVFORMAT_VERSION_MAJOR < 56)
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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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