diff options
Diffstat (limited to 'src/liblzma/subblock/subblock_decoder_helper.c')
-rw-r--r-- | src/liblzma/subblock/subblock_decoder_helper.c | 70 |
1 files changed, 0 insertions, 70 deletions
diff --git a/src/liblzma/subblock/subblock_decoder_helper.c b/src/liblzma/subblock/subblock_decoder_helper.c deleted file mode 100644 index 2a864edd..00000000 --- a/src/liblzma/subblock/subblock_decoder_helper.c +++ /dev/null @@ -1,70 +0,0 @@ -/////////////////////////////////////////////////////////////////////////////// -// -/// \file subblock_decoder_helper.c -/// \brief Helper filter for the Subblock decoder -/// -/// This filter is used to indicate End of Input for subfilters needing it. -// -// Author: Lasse Collin -// -// This file has been put into the public domain. -// You can do whatever you want with this file. -// -/////////////////////////////////////////////////////////////////////////////// - -#include "subblock_decoder_helper.h" - - -struct lzma_coder_s { - const lzma_options_subblock_helper *options; -}; - - -static lzma_ret -helper_decode(lzma_coder *coder, - lzma_allocator *allocator lzma_attribute((unused)), - const uint8_t *restrict in, size_t *restrict in_pos, - size_t in_size, uint8_t *restrict out, - size_t *restrict out_pos, size_t out_size, - lzma_action action lzma_attribute((unused))) -{ - // If end_was_reached is true, we cannot have any input. - assert(!coder->options->end_was_reached || *in_pos == in_size); - - // We can safely copy as much as possible, because we are never - // given more data than a single Subblock Data field. - lzma_bufcpy(in, in_pos, in_size, out, out_pos, out_size); - - // Return LZMA_STREAM_END when instructed so by the Subblock decoder. - return coder->options->end_was_reached ? LZMA_STREAM_END : LZMA_OK; -} - - -static void -helper_end(lzma_coder *coder, lzma_allocator *allocator) -{ - lzma_free(coder, allocator); - return; -} - - -extern lzma_ret -lzma_subblock_decoder_helper_init(lzma_next_coder *next, - lzma_allocator *allocator, const lzma_filter_info *filters) -{ - // This is always the last filter in the chain. - assert(filters[1].init == NULL); - - if (next->coder == NULL) { - next->coder = lzma_alloc(sizeof(lzma_coder), allocator); - if (next->coder == NULL) - return LZMA_MEM_ERROR; - - next->code = &helper_decode; - next->end = &helper_end; - } - - next->coder->options = filters[0].options; - - return LZMA_OK; -} |