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102 lines
2.5 KiB
102 lines
2.5 KiB
/* |
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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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