| /////////////////////////////////////////////////////////////////////////////// |
| // |
| /// \file filter_flags_encoder.c |
| /// \brief Decodes a Filter Flags field |
| // |
| // Copyright (C) 2007 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 "filter_encoder.h" |
| |
| |
| extern LZMA_API lzma_ret |
| lzma_filter_flags_size(uint32_t *size, const lzma_filter *filter) |
| { |
| if (filter->id >= LZMA_FILTER_RESERVED_START) |
| return LZMA_PROG_ERROR; |
| |
| return_if_error(lzma_properties_size(size, filter)); |
| |
| *size += lzma_vli_size(filter->id) + lzma_vli_size(*size); |
| |
| return LZMA_OK; |
| } |
| |
| |
| extern LZMA_API lzma_ret |
| lzma_filter_flags_encode(const lzma_filter *filter, |
| uint8_t *out, size_t *out_pos, size_t out_size) |
| { |
| // Filter ID |
| if (filter->id >= LZMA_FILTER_RESERVED_START) |
| return LZMA_PROG_ERROR; |
| |
| return_if_error(lzma_vli_encode(filter->id, NULL, |
| out, out_pos, out_size)); |
| |
| // Size of Properties |
| uint32_t props_size; |
| return_if_error(lzma_properties_size(&props_size, filter)); |
| return_if_error(lzma_vli_encode(props_size, NULL, |
| out, out_pos, out_size)); |
| |
| // Filter Properties |
| if (out_size - *out_pos < props_size) |
| return LZMA_PROG_ERROR; |
| |
| return_if_error(lzma_properties_encode(filter, out + *out_pos)); |
| |
| *out_pos += props_size; |
| |
| return LZMA_OK; |
| } |