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https://github.com/FFmpeg/FFmpeg.git
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1ef4828276
The encoders such as libx264 support different QPs offset for different MBs, it makes possible for ROI-based encoding. It makes sense to add support within ffmpeg to generate/accept ROI infos and pass into encoders. Typical usage: After AVFrame is decoded, a ffmpeg filter or user's code generates ROI info for that frame, and the encoder finally does the ROI-based encoding. The ROI info is maintained as side data of AVFrame. Signed-off-by: Guo, Yejun <yejun.guo@intel.com> Signed-off-by: Derek Buitenhuis <derek.buitenhuis@gmail.com>
140 lines
4.6 KiB
C
140 lines
4.6 KiB
C
/*
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* copyright (c) 2003 Fabrice Bellard
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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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/**
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* @file
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* @ingroup lavu
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* Libavutil version macros
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*/
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#ifndef AVUTIL_VERSION_H
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#define AVUTIL_VERSION_H
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#include "macros.h"
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/**
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* @addtogroup version_utils
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*
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* Useful to check and match library version in order to maintain
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* backward compatibility.
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*
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* The FFmpeg libraries follow a versioning sheme very similar to
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* Semantic Versioning (http://semver.org/)
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* The difference is that the component called PATCH is called MICRO in FFmpeg
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* and its value is reset to 100 instead of 0 to keep it above or equal to 100.
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* Also we do not increase MICRO for every bugfix or change in git master.
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*
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* Prior to FFmpeg 3.2 point releases did not change any lib version number to
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* avoid aliassing different git master checkouts.
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* Starting with FFmpeg 3.2, the released library versions will occupy
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* a separate MAJOR.MINOR that is not used on the master development branch.
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* That is if we branch a release of master 55.10.123 we will bump to 55.11.100
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* for the release and master will continue at 55.12.100 after it. Each new
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* point release will then bump the MICRO improving the usefulness of the lib
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* versions.
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*
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* @{
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*/
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#define AV_VERSION_INT(a, b, c) ((a)<<16 | (b)<<8 | (c))
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#define AV_VERSION_DOT(a, b, c) a ##.## b ##.## c
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#define AV_VERSION(a, b, c) AV_VERSION_DOT(a, b, c)
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/**
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* Extract version components from the full ::AV_VERSION_INT int as returned
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* by functions like ::avformat_version() and ::avcodec_version()
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*/
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#define AV_VERSION_MAJOR(a) ((a) >> 16)
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#define AV_VERSION_MINOR(a) (((a) & 0x00FF00) >> 8)
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#define AV_VERSION_MICRO(a) ((a) & 0xFF)
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/**
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* @}
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*/
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/**
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* @defgroup lavu_ver Version and Build diagnostics
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*
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* Macros and function useful to check at compiletime and at runtime
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* which version of libavutil is in use.
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*
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* @{
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*/
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#define LIBAVUTIL_VERSION_MAJOR 56
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#define LIBAVUTIL_VERSION_MINOR 26
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#define LIBAVUTIL_VERSION_MICRO 100
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#define LIBAVUTIL_VERSION_INT AV_VERSION_INT(LIBAVUTIL_VERSION_MAJOR, \
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LIBAVUTIL_VERSION_MINOR, \
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LIBAVUTIL_VERSION_MICRO)
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#define LIBAVUTIL_VERSION AV_VERSION(LIBAVUTIL_VERSION_MAJOR, \
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LIBAVUTIL_VERSION_MINOR, \
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LIBAVUTIL_VERSION_MICRO)
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#define LIBAVUTIL_BUILD LIBAVUTIL_VERSION_INT
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#define LIBAVUTIL_IDENT "Lavu" AV_STRINGIFY(LIBAVUTIL_VERSION)
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/**
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* @defgroup lavu_depr_guards Deprecation Guards
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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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*/
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#ifndef FF_API_VAAPI
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#define FF_API_VAAPI (LIBAVUTIL_VERSION_MAJOR < 57)
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#endif
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#ifndef FF_API_FRAME_QP
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#define FF_API_FRAME_QP (LIBAVUTIL_VERSION_MAJOR < 57)
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#endif
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#ifndef FF_API_PLUS1_MINUS1
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#define FF_API_PLUS1_MINUS1 (LIBAVUTIL_VERSION_MAJOR < 57)
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#endif
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#ifndef FF_API_ERROR_FRAME
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#define FF_API_ERROR_FRAME (LIBAVUTIL_VERSION_MAJOR < 57)
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#endif
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#ifndef FF_API_PKT_PTS
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#define FF_API_PKT_PTS (LIBAVUTIL_VERSION_MAJOR < 57)
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#endif
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#ifndef FF_API_CRYPTO_SIZE_T
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#define FF_API_CRYPTO_SIZE_T (LIBAVUTIL_VERSION_MAJOR < 57)
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#endif
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#ifndef FF_API_FRAME_GET_SET
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#define FF_API_FRAME_GET_SET (LIBAVUTIL_VERSION_MAJOR < 57)
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#endif
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#ifndef FF_API_PSEUDOPAL
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#define FF_API_PSEUDOPAL (LIBAVUTIL_VERSION_MAJOR < 57)
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#endif
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/**
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* @}
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* @}
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*/
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#endif /* AVUTIL_VERSION_H */
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