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///////////////////////////////////////////////////////////////////////////////
//
/// \file filter_buffer_encoder.c
/// \brief Single-call raw encoding
//
// Author: Lasse Collin
//
// This file has been put into the public domain.
// You can do whatever you want with this file.
//
///////////////////////////////////////////////////////////////////////////////
#include "filter_encoder.h"
extern LZMA_API(lzma_ret)
lzma_raw_buffer_encode(
const lzma_filter *filters, const lzma_allocator *allocator,
const uint8_t *in, size_t in_size,
uint8_t *out, size_t *out_pos, size_t out_size)
{
// Validate what isn't validated later in filter_common.c.
if ((in == NULL && in_size != 0) || out == NULL
|| out_pos == NULL || *out_pos > out_size)
return LZMA_PROG_ERROR;
// Initialize the encoder
lzma_next_coder next = LZMA_NEXT_CODER_INIT;
return_if_error(lzma_raw_encoder_init(&next, allocator, filters));
// Store the output position so that we can restore it if
// something goes wrong.
const size_t out_start = *out_pos;
// Do the actual encoding and free coder's memory.
size_t in_pos = 0;
lzma_ret ret = next.code(next.coder, allocator, in, &in_pos, in_size,
out, out_pos, out_size, LZMA_FINISH);
lzma_next_end(&next, allocator);
if (ret == LZMA_STREAM_END) {
ret = LZMA_OK;
} else {
if (ret == LZMA_OK) {
// Output buffer was too small.
assert(*out_pos == out_size);
ret = LZMA_BUF_ERROR;
}
// Restore the output position.
*out_pos = out_start;
}
return ret;
}
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