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https://github.com/FFmpeg/FFmpeg.git
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52 lines
1.8 KiB
C
52 lines
1.8 KiB
C
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/*
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* Wrappers for zlib
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* Copyright (C) 2022 Andreas Rheinhardt
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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 AVCODEC_ZLIB_WRAPPER_H
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#define AVCODEC_ZLIB_WRAPPER_H
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#include <zlib.h>
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typedef struct FFZStream {
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z_stream zstream;
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int inited;
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} FFZStream;
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/**
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* Wrapper around inflateInit(). It initializes the fields that zlib
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* requires to be initialized before inflateInit().
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* In case of error it also returns an error message to the provided logctx;
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* in any case, it sets zstream->inited to indicate whether inflateInit()
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* succeeded.
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* @return Returns 0 on success or a negative error code on failure
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*/
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int ff_inflate_init(FFZStream *zstream, void *logctx);
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/**
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* Wrapper around inflateEnd(). It calls inflateEnd() iff
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* zstream->inited is set and resets zstream->inited.
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* It is therefore safe to be called even if
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* ff_inflate_init() has never been called on it (or errored out)
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* provided that the FFZStream (or just FFZStream.inited) has been zeroed.
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*/
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void ff_inflate_end(FFZStream *zstream);
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#endif /* AVCODEC_ZLIB_WRAPPER_H */
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