diff options
Diffstat (limited to 'src/liblzma/simple/simple_coder.c')
| -rw-r--r-- | src/liblzma/simple/simple_coder.c | 61 |
1 files changed, 33 insertions, 28 deletions
diff --git a/src/liblzma/simple/simple_coder.c b/src/liblzma/simple/simple_coder.c index dba5417b4264..13ebabc76dcc 100644 --- a/src/liblzma/simple/simple_coder.c +++ b/src/liblzma/simple/simple_coder.c @@ -18,7 +18,7 @@ /// Copied or encodes/decodes more data to out[]. static lzma_ret -copy_or_code(lzma_coder *coder, const lzma_allocator *allocator, +copy_or_code(lzma_simple_coder *coder, const lzma_allocator *allocator, 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) @@ -55,7 +55,7 @@ copy_or_code(lzma_coder *coder, const lzma_allocator *allocator, static size_t -call_filter(lzma_coder *coder, uint8_t *buffer, size_t size) +call_filter(lzma_simple_coder *coder, uint8_t *buffer, size_t size) { const size_t filtered = coder->filter(coder->simple, coder->now_pos, coder->is_encoder, @@ -66,11 +66,13 @@ call_filter(lzma_coder *coder, uint8_t *buffer, size_t size) static lzma_ret -simple_code(lzma_coder *coder, const lzma_allocator *allocator, +simple_code(void *coder_ptr, const lzma_allocator *allocator, 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_simple_coder *coder = coder_ptr; + // TODO: Add partial support for LZMA_SYNC_FLUSH. We can support it // in cases when the filter is able to filter everything. With most // simple filters it can be done at offset that is a multiple of 2, @@ -198,8 +200,9 @@ simple_code(lzma_coder *coder, const lzma_allocator *allocator, static void -simple_coder_end(lzma_coder *coder, const lzma_allocator *allocator) +simple_coder_end(void *coder_ptr, const lzma_allocator *allocator) { + lzma_simple_coder *coder = coder_ptr; lzma_next_end(&coder->next, allocator); lzma_free(coder->simple, allocator); lzma_free(coder, allocator); @@ -208,10 +211,12 @@ simple_coder_end(lzma_coder *coder, const lzma_allocator *allocator) static lzma_ret -simple_coder_update(lzma_coder *coder, const lzma_allocator *allocator, +simple_coder_update(void *coder_ptr, const lzma_allocator *allocator, const lzma_filter *filters_null lzma_attribute((__unused__)), const lzma_filter *reversed_filters) { + lzma_simple_coder *coder = coder_ptr; + // No update support, just call the next filter in the chain. return lzma_next_filter_update( &coder->next, allocator, reversed_filters + 1); @@ -221,57 +226,57 @@ simple_coder_update(lzma_coder *coder, const lzma_allocator *allocator, extern lzma_ret lzma_simple_coder_init(lzma_next_coder *next, const lzma_allocator *allocator, const lzma_filter_info *filters, - size_t (*filter)(lzma_simple *simple, uint32_t now_pos, + size_t (*filter)(void *simple, uint32_t now_pos, bool is_encoder, uint8_t *buffer, size_t size), size_t simple_size, size_t unfiltered_max, uint32_t alignment, bool is_encoder) { - // Allocate memory for the lzma_coder structure if needed. - if (next->coder == NULL) { + // Allocate memory for the lzma_simple_coder structure if needed. + lzma_simple_coder *coder = next->coder; + if (coder == NULL) { // Here we allocate space also for the temporary buffer. We // need twice the size of unfiltered_max, because then it // is always possible to filter at least unfiltered_max bytes // more data in coder->buffer[] if it can be filled completely. - next->coder = lzma_alloc(sizeof(lzma_coder) + coder = lzma_alloc(sizeof(lzma_simple_coder) + 2 * unfiltered_max, allocator); - if (next->coder == NULL) + if (coder == NULL) return LZMA_MEM_ERROR; + next->coder = coder; next->code = &simple_code; next->end = &simple_coder_end; next->update = &simple_coder_update; - next->coder->next = LZMA_NEXT_CODER_INIT; - next->coder->filter = filter; - next->coder->allocated = 2 * unfiltered_max; + coder->next = LZMA_NEXT_CODER_INIT; + coder->filter = filter; + coder->allocated = 2 * unfiltered_max; // Allocate memory for filter-specific data structure. if (simple_size > 0) { - next->coder->simple = lzma_alloc( - simple_size, allocator); - if (next->coder->simple == NULL) + coder->simple = lzma_alloc(simple_size, allocator); + if (coder->simple == NULL) return LZMA_MEM_ERROR; } else { - next->coder->simple = NULL; + coder->simple = NULL; } } if (filters[0].options != NULL) { const lzma_options_bcj *simple = filters[0].options; - next->coder->now_pos = simple->start_offset; - if (next->coder->now_pos & (alignment - 1)) + coder->now_pos = simple->start_offset; + if (coder->now_pos & (alignment - 1)) return LZMA_OPTIONS_ERROR; } else { - next->coder->now_pos = 0; + coder->now_pos = 0; } // Reset variables. - next->coder->is_encoder = is_encoder; - next->coder->end_was_reached = false; - next->coder->pos = 0; - next->coder->filtered = 0; - next->coder->size = 0; - - return lzma_next_filter_init( - &next->coder->next, allocator, filters + 1); + coder->is_encoder = is_encoder; + coder->end_was_reached = false; + coder->pos = 0; + coder->filtered = 0; + coder->size = 0; + + return lzma_next_filter_init(&coder->next, allocator, filters + 1); } |