mirror of https://git.ffmpeg.org/ffmpeg.git
103 lines
2.5 KiB
C
103 lines
2.5 KiB
C
/*
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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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#include <zlib.h>
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#include "config.h"
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#include "libavutil/error.h"
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#include "libavutil/log.h"
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#include "libavutil/mem.h"
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#include "zlib_wrapper.h"
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static void *alloc_wrapper(void *opaque, uInt items, uInt size)
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{
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return av_malloc_array(items, size);
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}
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static void free_wrapper(void *opaque, void *ptr)
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{
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av_free(ptr);
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}
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#if CONFIG_INFLATE_WRAPPER
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int ff_inflate_init(FFZStream *z, void *logctx)
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{
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z_stream *const zstream = &z->zstream;
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int zret;
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z->inited = 0;
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zstream->next_in = Z_NULL;
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zstream->avail_in = 0;
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zstream->zalloc = alloc_wrapper;
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zstream->zfree = free_wrapper;
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zstream->opaque = Z_NULL;
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zret = inflateInit(zstream);
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if (zret == Z_OK) {
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z->inited = 1;
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} else {
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av_log(logctx, AV_LOG_ERROR, "inflateInit error %d, message: %s\n",
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zret, zstream->msg ? zstream->msg : "");
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return AVERROR_EXTERNAL;
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}
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return 0;
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}
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void ff_inflate_end(FFZStream *z)
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{
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if (z->inited) {
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z->inited = 0;
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inflateEnd(&z->zstream);
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}
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}
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#endif
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#if CONFIG_DEFLATE_WRAPPER
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int ff_deflate_init(FFZStream *z, int level, void *logctx)
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{
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z_stream *const zstream = &z->zstream;
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int zret;
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z->inited = 0;
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zstream->zalloc = alloc_wrapper;
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zstream->zfree = free_wrapper;
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zstream->opaque = Z_NULL;
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zret = deflateInit(zstream, level);
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if (zret == Z_OK) {
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z->inited = 1;
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} else {
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av_log(logctx, AV_LOG_ERROR, "deflateInit error %d, message: %s\n",
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zret, zstream->msg ? zstream->msg : "");
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return AVERROR_EXTERNAL;
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}
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return 0;
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}
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void ff_deflate_end(FFZStream *z)
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{
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if (z->inited) {
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z->inited = 0;
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deflateEnd(&z->zstream);
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}
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}
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#endif
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