| /* |
| |
| LinuxBIOS interface to memory-saving variant of LZMA decoder |
| (C)opyright 2006 Carl-Daniel Hailfinger |
| Released under the GNU GPL |
| |
| */ |
| |
| #include "lzmadecode.c" |
| |
| |
| static unsigned long ulzma(unsigned char * src, unsigned char * dst) |
| { |
| unsigned char properties[LZMA_PROPERTIES_SIZE]; |
| UInt32 outSize; |
| SizeT inProcessed; |
| SizeT outProcessed; |
| int res; |
| CLzmaDecoderState state; |
| SizeT mallocneeds; |
| unsigned char scratchpad[15980]; |
| |
| memcpy(properties, src, LZMA_PROPERTIES_SIZE); |
| outSize = *(UInt32 *)(src + LZMA_PROPERTIES_SIZE); |
| if (LzmaDecodeProperties(&state.Properties, properties, LZMA_PROPERTIES_SIZE) != LZMA_RESULT_OK) { |
| printk_warning("Incorrect stream properties\n"); |
| } |
| mallocneeds = (LzmaGetNumProbs(&state.Properties) * sizeof(CProb)); |
| if (mallocneeds > 15980) { |
| printk_warning("Decoder scratchpad too small!\n"); |
| } |
| state.Probs = (CProb *)scratchpad; |
| res = LzmaDecode(&state, src + LZMA_PROPERTIES_SIZE + 8, (SizeT)0xffffffff, &inProcessed, |
| dst, outSize, &outProcessed); |
| if (res != 0) { |
| printk_warning("Decoding error = %d\n", res); |
| } |
| return outSize; |
| } |