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8542f9c4f1
According to the ReplayGain spec, the peak amplitude may overflow and may result in peak amplitude values greater than 1.0 with psychoacoustically coded audio, such as MP3. Fully compliant decoders must allow peak overflows. Additionally, having peak values in the 0<->UINT32_MAX scale makes it more difficult for applications to actually use the peak values (e.g. when implementing clipping prevention) since values have to be rescaled down. This patch corrects the peak parsing by removing the rescaling of the decoded values between 0 and UINT32_MAX and the 1.0 upper limit. Signed-off-by: Anton Khirnov <anton@khirnov.net>
120 lines
3.5 KiB
C
120 lines
3.5 KiB
C
/*
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* This file is part of Libav.
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*
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* Libav 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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* Libav 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 Libav; 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 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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* @defgroup version_utils Library Version Macros
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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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* @{
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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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* @}
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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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/**
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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 53
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#define LIBAVUTIL_VERSION_MINOR 10
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#define LIBAVUTIL_VERSION_MICRO 0
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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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* @}
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*
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* @defgroup 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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* @{
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*/
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#ifndef FF_API_PIX_FMT
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#define FF_API_PIX_FMT (LIBAVUTIL_VERSION_MAJOR < 54)
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#endif
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#ifndef FF_API_CONTEXT_SIZE
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#define FF_API_CONTEXT_SIZE (LIBAVUTIL_VERSION_MAJOR < 54)
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#endif
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#ifndef FF_API_PIX_FMT_DESC
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#define FF_API_PIX_FMT_DESC (LIBAVUTIL_VERSION_MAJOR < 54)
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#endif
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#ifndef FF_API_AV_REVERSE
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#define FF_API_AV_REVERSE (LIBAVUTIL_VERSION_MAJOR < 54)
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#endif
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#ifndef FF_API_AUDIOCONVERT
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#define FF_API_AUDIOCONVERT (LIBAVUTIL_VERSION_MAJOR < 54)
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#endif
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#ifndef FF_API_CPU_FLAG_MMX2
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#define FF_API_CPU_FLAG_MMX2 (LIBAVUTIL_VERSION_MAJOR < 54)
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#endif
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#ifndef FF_API_LLS_PRIVATE
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#define FF_API_LLS_PRIVATE (LIBAVUTIL_VERSION_MAJOR < 54)
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#endif
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#ifndef FF_API_AVFRAME_LAVC
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#define FF_API_AVFRAME_LAVC (LIBAVUTIL_VERSION_MAJOR < 54)
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#endif
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#ifndef FF_API_VDPAU
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#define FF_API_VDPAU (LIBAVUTIL_VERSION_MAJOR < 54)
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#endif
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#ifndef FF_API_XVMC
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#define FF_API_XVMC (LIBAVUTIL_VERSION_MAJOR < 54)
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#endif
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#ifndef FF_API_OPT_TYPE_METADATA
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#define FF_API_OPT_TYPE_METADATA (LIBAVUTIL_VERSION_MAJOR < 54)
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#endif
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/**
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* @}
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*/
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#endif /* AVUTIL_VERSION_H */
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