12940b44dSPeter Avalos /////////////////////////////////////////////////////////////////////////////// 22940b44dSPeter Avalos // 32940b44dSPeter Avalos /// \file simple_decoder.c 42940b44dSPeter Avalos /// \brief Properties decoder for simple filters 52940b44dSPeter Avalos // 62940b44dSPeter Avalos // Author: Lasse Collin 72940b44dSPeter Avalos // 82940b44dSPeter Avalos // This file has been put into the public domain. 92940b44dSPeter Avalos // You can do whatever you want with this file. 102940b44dSPeter Avalos // 112940b44dSPeter Avalos /////////////////////////////////////////////////////////////////////////////// 122940b44dSPeter Avalos 132940b44dSPeter Avalos #include "simple_decoder.h" 142940b44dSPeter Avalos 152940b44dSPeter Avalos 162940b44dSPeter Avalos extern lzma_ret lzma_simple_props_decode(void ** options,const lzma_allocator * allocator,const uint8_t * props,size_t props_size)1715ab8c86SJohn Marinolzma_simple_props_decode(void **options, const lzma_allocator *allocator, 182940b44dSPeter Avalos const uint8_t *props, size_t props_size) 192940b44dSPeter Avalos { 202940b44dSPeter Avalos if (props_size == 0) 212940b44dSPeter Avalos return LZMA_OK; 222940b44dSPeter Avalos 232940b44dSPeter Avalos if (props_size != 4) 242940b44dSPeter Avalos return LZMA_OPTIONS_ERROR; 252940b44dSPeter Avalos 262940b44dSPeter Avalos lzma_options_bcj *opt = lzma_alloc( 272940b44dSPeter Avalos sizeof(lzma_options_bcj), allocator); 282940b44dSPeter Avalos if (opt == NULL) 292940b44dSPeter Avalos return LZMA_MEM_ERROR; 302940b44dSPeter Avalos 31*e151908bSDaniel Fojt opt->start_offset = read32le(props); 322940b44dSPeter Avalos 332940b44dSPeter Avalos // Don't leave an options structure allocated if start_offset is zero. 342940b44dSPeter Avalos if (opt->start_offset == 0) 352940b44dSPeter Avalos lzma_free(opt, allocator); 362940b44dSPeter Avalos else 372940b44dSPeter Avalos *options = opt; 382940b44dSPeter Avalos 392940b44dSPeter Avalos return LZMA_OK; 402940b44dSPeter Avalos } 41