1207753Smm/////////////////////////////////////////////////////////////////////////////// 2207753Smm// 3207753Smm/// \file filter_buffer_encoder.c 4207753Smm/// \brief Single-call raw encoding 5207753Smm// 6207753Smm// Author: Lasse Collin 7207753Smm// 8207753Smm// This file has been put into the public domain. 9207753Smm// You can do whatever you want with this file. 10207753Smm// 11207753Smm/////////////////////////////////////////////////////////////////////////////// 12207753Smm 13207753Smm#include "filter_encoder.h" 14207753Smm 15207753Smm 16207753Smmextern LZMA_API(lzma_ret) 17292588Sdelphijlzma_raw_buffer_encode( 18292588Sdelphij const lzma_filter *filters, const lzma_allocator *allocator, 19292588Sdelphij const uint8_t *in, size_t in_size, 20292588Sdelphij uint8_t *out, size_t *out_pos, size_t out_size) 21207753Smm{ 22207753Smm // Validate what isn't validated later in filter_common.c. 23207753Smm if ((in == NULL && in_size != 0) || out == NULL 24207753Smm || out_pos == NULL || *out_pos > out_size) 25207753Smm return LZMA_PROG_ERROR; 26207753Smm 27207753Smm // Initialize the encoder 28207753Smm lzma_next_coder next = LZMA_NEXT_CODER_INIT; 29207753Smm return_if_error(lzma_raw_encoder_init(&next, allocator, filters)); 30207753Smm 31207753Smm // Store the output position so that we can restore it if 32207753Smm // something goes wrong. 33207753Smm const size_t out_start = *out_pos; 34207753Smm 35207753Smm // Do the actual encoding and free coder's memory. 36207753Smm size_t in_pos = 0; 37207753Smm lzma_ret ret = next.code(next.coder, allocator, in, &in_pos, in_size, 38207753Smm out, out_pos, out_size, LZMA_FINISH); 39207753Smm lzma_next_end(&next, allocator); 40207753Smm 41207753Smm if (ret == LZMA_STREAM_END) { 42207753Smm ret = LZMA_OK; 43207753Smm } else { 44207753Smm if (ret == LZMA_OK) { 45207753Smm // Output buffer was too small. 46207753Smm assert(*out_pos == out_size); 47207753Smm ret = LZMA_BUF_ERROR; 48207753Smm } 49207753Smm 50207753Smm // Restore the output position. 51207753Smm *out_pos = out_start; 52207753Smm } 53207753Smm 54207753Smm return ret; 55207753Smm} 56