1 ///////////////////////////////////////////////////////////////////////////////
3 /// \file filter_buffer_encoder.c
4 /// \brief Single-call raw encoding
6 // Author: Lasse Collin
8 // This file has been put into the public domain.
9 // You can do whatever you want with this file.
11 ///////////////////////////////////////////////////////////////////////////////
13 #include "filter_encoder.h"
16 extern LZMA_API(lzma_ret)
17 lzma_raw_buffer_encode(const lzma_filter *filters, lzma_allocator *allocator,
18 const uint8_t *in, size_t in_size, uint8_t *out,
19 size_t *out_pos, size_t out_size)
21 // Validate what isn't validated later in filter_common.c.
22 if ((in == NULL && in_size != 0) || out == NULL
23 || out_pos == NULL || *out_pos > out_size)
24 return LZMA_PROG_ERROR;
26 // Initialize the encoder
27 lzma_next_coder next = LZMA_NEXT_CODER_INIT;
28 return_if_error(lzma_raw_encoder_init(&next, allocator, filters));
30 // Store the output position so that we can restore it if
31 // something goes wrong.
32 const size_t out_start = *out_pos;
34 // Do the actual encoding and free coder's memory.
36 lzma_ret ret = next.code(next.coder, allocator, in, &in_pos, in_size,
37 out, out_pos, out_size, LZMA_FINISH);
38 lzma_next_end(&next, allocator);
40 if (ret == LZMA_STREAM_END) {
44 // Output buffer was too small.
45 assert(*out_pos == out_size);
49 // Restore the output position.