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Diffstat (limited to 'src/liblzma/common/delta_decoder.c')
-rw-r--r-- | src/liblzma/common/delta_decoder.c | 61 |
1 files changed, 0 insertions, 61 deletions
diff --git a/src/liblzma/common/delta_decoder.c b/src/liblzma/common/delta_decoder.c deleted file mode 100644 index 8f5a4cbf..00000000 --- a/src/liblzma/common/delta_decoder.c +++ /dev/null @@ -1,61 +0,0 @@ -/////////////////////////////////////////////////////////////////////////////// -// -/// \file delta_decoder.c -/// \brief Delta filter decoder -// -// Copyright (C) 2007, 2008 Lasse Collin -// -// This library is free software; you can redistribute it and/or -// modify it under the terms of the GNU Lesser General Public -// License as published by the Free Software Foundation; either -// version 2.1 of the License, or (at your option) any later version. -// -// This library is distributed in the hope that it will be useful, -// but WITHOUT ANY WARRANTY; without even the implied warranty of -// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU -// Lesser General Public License for more details. -// -/////////////////////////////////////////////////////////////////////////////// - -#include "delta_decoder.h" -#include "delta_common.h" - - -static void -decode_buffer(lzma_coder *coder, uint8_t *buffer, size_t size) -{ - const size_t distance = coder->distance; - - for (size_t i = 0; i < size; ++i) { - buffer[i] += coder->history[(distance + coder->pos) & 0xFF]; - coder->history[coder->pos-- & 0xFF] = buffer[i]; - } -} - - -static lzma_ret -delta_decode(lzma_coder *coder, lzma_allocator *allocator, - const uint8_t *restrict in, size_t *restrict in_pos, - size_t in_size, uint8_t *restrict out, - size_t *restrict out_pos, size_t out_size, lzma_action action) -{ - assert(coder->next.code != NULL); - - const size_t out_start = *out_pos; - - const lzma_ret ret = coder->next.code(coder->next.coder, allocator, - in, in_pos, in_size, out, out_pos, out_size, - action); - - decode_buffer(coder, out + out_start, *out_pos - out_start); - - return ret; -} - - -extern lzma_ret -lzma_delta_decoder_init(lzma_next_coder *next, lzma_allocator *allocator, - const lzma_filter_info *filters) -{ - return lzma_delta_coder_init(next, allocator, filters, &delta_decode); -} |