60 lines
2.2 KiB
C++
60 lines
2.2 KiB
C++
/*
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* Copyright (c) Atmosphère-NX
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms and conditions of the GNU General Public License,
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* version 2, as published by the Free Software Foundation.
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*
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* This program is distributed in the hope it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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* more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include <stratosphere.hpp>
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#define ZSTD_STATIC_LINKING_ONLY
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#pragma GCC diagnostic push
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#pragma GCC diagnostic ignored "-Wunused-function"
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#define ZSTDLIB_VISIBLE static
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#define ZSTDLIB_HIDDEN static
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#include "zstd.h"
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#include "zstd.inc"
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#pragma GCC diagnostic pop
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namespace ams::util {
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size_t CompressZstd(void *dst, size_t dst_size, const void *src, size_t src_size) {
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/* Basic size checks. */
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AMS_ABORT_UNLESS(dst_size <= std::numeric_limits<int>::max());
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AMS_ABORT_UNLESS(src_size <= std::numeric_limits<int>::max());
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/* Additionally, we must check the compression boundary. */
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auto bound = ZSTD_compressBound(src_size);
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AMS_ABORT_UNLESS(!ZSTD_isError(bound));
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AMS_ABORT_UNLESS(dst_size >= bound);
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/* Use Zstd default level. */
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int compressionLevel = 3;
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/* This is just a wrapper around Zstd. */
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return ZSTD_compress(dst, dst_size, src, src_size, compressionLevel);
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}
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size_t DecompressZstd(void *dst, size_t dst_size, const void *src, size_t src_size) {
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/* Basic size checks. */
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AMS_ABORT_UNLESS(dst_size <= std::numeric_limits<int>::max());
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AMS_ABORT_UNLESS(src_size <= std::numeric_limits<int>::max());
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/* Additionally, we must check the decompression boundary. */
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auto bound = ZSTD_decompressBound(src, src_size);
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AMS_ABORT_UNLESS(!ZSTD_isError(bound));
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AMS_ABORT_UNLESS(dst_size >= bound);
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/* This is just a wrapper around Zstd. */
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return ZSTD_decompress(dst, dst_size, src, src_size);
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}
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} |