| /////////////////////////////////////////////////////////////////////////////// |
| // |
| /// \file filter_flags_decoder.c |
| /// \brief Decodes a Filter Flags field |
| // |
| // Author: Lasse Collin |
| // |
| // This file has been put into the public domain. |
| // You can do whatever you want with this file. |
| // |
| /////////////////////////////////////////////////////////////////////////////// |
| |
| #include "filter_decoder.h" |
| |
| |
| extern LZMA_API(lzma_ret) |
| lzma_filter_flags_decode( |
| lzma_filter *filter, lzma_allocator *allocator, |
| const uint8_t *in, size_t *in_pos, size_t in_size) |
| { |
| // Set the pointer to NULL so the caller can always safely free it. |
| filter->options = NULL; |
| |
| // Filter ID |
| return_if_error(lzma_vli_decode(&filter->id, NULL, |
| in, in_pos, in_size)); |
| |
| if (filter->id >= LZMA_FILTER_RESERVED_START) |
| return LZMA_DATA_ERROR; |
| |
| // Size of Properties |
| lzma_vli props_size; |
| return_if_error(lzma_vli_decode(&props_size, NULL, |
| in, in_pos, in_size)); |
| |
| // Filter Properties |
| if (in_size - *in_pos < props_size) |
| return LZMA_DATA_ERROR; |
| |
| const lzma_ret ret = lzma_properties_decode( |
| filter, allocator, in + *in_pos, props_size); |
| |
| *in_pos += props_size; |
| |
| return ret; |
| } |