mirror of
https://github.com/Ed94/raddebugger.git
synced 2026-06-18 18:12:23 -07:00
Ryan Fleury
53 lines
2.0 KiB
C
53 lines
2.0 KiB
C
// Copyright (c) 2024 Epic Games Tools
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// Licensed under the MIT license (https://opensource.org/license/mit/)
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#include "lib_rdi_format/rdi_format.c"
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#include "lib_rdi_format/rdi_format_parse.c"
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internal void
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rdi_decompress_parsed(U8 *decompressed_data, U64 decompressed_size, RDI_Parsed *og_rdi)
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{
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// rjf: copy header
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RDI_Header *src_header = (RDI_Header *)og_rdi->raw_data;
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RDI_Header *dst_header = (RDI_Header *)decompressed_data;
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{
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MemoryCopy(dst_header, src_header, sizeof(RDI_Header));
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}
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// rjf: copy & adjust sections for decompressed version
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if(og_rdi->sections_count != 0)
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{
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RDI_Section *dsec_base = (RDI_Section *)(decompressed_data + dst_header->data_section_off);
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MemoryCopy(dsec_base, (U8 *)og_rdi->raw_data + src_header->data_section_off, sizeof(RDI_Section) * og_rdi->sections_count);
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U64 off = dst_header->data_section_off + sizeof(RDI_Section) * og_rdi->sections_count;
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off += 7;
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off -= off%8;
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for(U64 idx = 0; idx < og_rdi->sections_count; idx += 1)
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{
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dsec_base[idx].encoding = RDI_SectionEncoding_Unpacked;
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dsec_base[idx].off = off;
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dsec_base[idx].encoded_size = dsec_base[idx].unpacked_size;
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off += dsec_base[idx].unpacked_size;
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off += 7;
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off -= off%8;
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}
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}
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// rjf: decompress sections into new decompressed file buffer
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if(og_rdi->sections_count != 0)
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{
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RDI_Section *src_first = og_rdi->sections;
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RDI_Section *dst_first = (RDI_Section *)(decompressed_data + dst_header->data_section_off);
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RDI_Section *src_opl = src_first + og_rdi->sections_count;
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RDI_Section *dst_opl = dst_first + og_rdi->sections_count;
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for(RDI_Section *src = src_first, *dst = dst_first;
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src < src_opl && dst < dst_opl;
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src += 1, dst += 1)
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{
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rr_lzb_simple_decode((U8*)og_rdi->raw_data + src->off, src->encoded_size,
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decompressed_data + dst->off, dst->unpacked_size);
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}
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}
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}
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