1 /************************************************************************** 2 * 3 * Copyright 2010 Luca Barbieri 4 * 5 * Permission is hereby granted, free of charge, to any person obtaining 6 * a copy of this software and associated documentation files (the 7 * "Software"), to deal in the Software without restriction, including 8 * without limitation the rights to use, copy, modify, merge, publish, 9 * distribute, sublicense, and/or sell copies of the Software, and to 10 * permit persons to whom the Software is furnished to do so, subject to 11 * the following conditions: 12 * 13 * The above copyright notice and this permission notice (including the 14 * next paragraph) shall be included in all copies or substantial 15 * portions of the Software. 16 * 17 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, 18 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF 19 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. 20 * IN NO EVENT SHALL THE COPYRIGHT OWNER(S) AND/OR ITS SUPPLIERS BE 21 * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION 22 * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION 23 * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. 24 * 25 **************************************************************************/ 26 27 #include <stdlib.h> 28 #include <string.h> 29 #include "dxbc.h" 30 31 std::pair<void*, size_t> dxbc_assemble(struct dxbc_chunk_header** chunks, unsigned num_chunks) 32 { 33 size_t data_size = 0; 34 for(unsigned i = 0; i < num_chunks; ++i) 35 data_size += sizeof(uint32_t) + sizeof(dxbc_chunk_header) + bswap_le32(chunks[i]->size); 36 37 size_t total_size = sizeof(dxbc_container_header) + data_size; 38 dxbc_container_header* header = (dxbc_container_header*)malloc(total_size); 39 if(!header) 40 return std::make_pair((void*)0, 0); 41 42 header->fourcc = bswap_le32(FOURCC_DXBC); 43 memset(header->unk, 0, sizeof(header->unk)); 44 header->one = bswap_le32(1); 45 header->total_size = bswap_le32(total_size); 46 header->chunk_count = num_chunks; 47 48 uint32_t* chunk_offsets = (uint32_t*)(header + 1); 49 uint32_t off = sizeof(struct dxbc_container_header) + num_chunks * sizeof(uint32_t); 50 for(unsigned i = 0; i < num_chunks; ++i) 51 { 52 chunk_offsets[i] = bswap_le32(off); 53 unsigned chunk_full_size = sizeof(dxbc_chunk_header) + bswap_le32(chunks[i]->size); 54 memcpy((char*)header + off, chunks[i], chunk_full_size); 55 off += chunk_full_size; 56 } 57 58 return std::make_pair((void*)header, total_size); 59 } 60
