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path: root/src/liblzma/common/auto_decoder.c
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Diffstat (limited to 'src/liblzma/common/auto_decoder.c')
-rw-r--r--src/liblzma/common/auto_decoder.c35
1 files changed, 22 insertions, 13 deletions
diff --git a/src/liblzma/common/auto_decoder.c b/src/liblzma/common/auto_decoder.c
index bf355070..09acd6dc 100644
--- a/src/liblzma/common/auto_decoder.c
+++ b/src/liblzma/common/auto_decoder.c
@@ -14,7 +14,7 @@
#include "alone_decoder.h"
-struct lzma_coder_s {
+typedef struct {
/// Stream decoder or LZMA_Alone decoder
lzma_next_coder next;
@@ -26,15 +26,17 @@ struct lzma_coder_s {
SEQ_CODE,
SEQ_FINISH,
} sequence;
-};
+} lzma_auto_coder;
static lzma_ret
-auto_decode(lzma_coder *coder, const lzma_allocator *allocator,
+auto_decode(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_auto_coder *coder = coder_ptr;
+
switch (coder->sequence) {
case SEQ_INIT:
if (*in_pos >= in_size)
@@ -100,8 +102,9 @@ auto_decode(lzma_coder *coder, const lzma_allocator *allocator,
static void
-auto_decoder_end(lzma_coder *coder, const lzma_allocator *allocator)
+auto_decoder_end(void *coder_ptr, const lzma_allocator *allocator)
{
+ lzma_auto_coder *coder = coder_ptr;
lzma_next_end(&coder->next, allocator);
lzma_free(coder, allocator);
return;
@@ -109,8 +112,10 @@ auto_decoder_end(lzma_coder *coder, const lzma_allocator *allocator)
static lzma_check
-auto_decoder_get_check(const lzma_coder *coder)
+auto_decoder_get_check(const void *coder_ptr)
{
+ const lzma_auto_coder *coder = coder_ptr;
+
// It is LZMA_Alone if get_check is NULL.
return coder->next.get_check == NULL ? LZMA_CHECK_NONE
: coder->next.get_check(coder->next.coder);
@@ -118,9 +123,11 @@ auto_decoder_get_check(const lzma_coder *coder)
static lzma_ret
-auto_decoder_memconfig(lzma_coder *coder, uint64_t *memusage,
+auto_decoder_memconfig(void *coder_ptr, uint64_t *memusage,
uint64_t *old_memlimit, uint64_t new_memlimit)
{
+ lzma_auto_coder *coder = coder_ptr;
+
lzma_ret ret;
if (coder->next.memconfig != NULL) {
@@ -154,21 +161,23 @@ auto_decoder_init(lzma_next_coder *next, const lzma_allocator *allocator,
if (flags & ~LZMA_SUPPORTED_FLAGS)
return LZMA_OPTIONS_ERROR;
- if (next->coder == NULL) {
- next->coder = lzma_alloc(sizeof(lzma_coder), allocator);
- if (next->coder == NULL)
+ lzma_auto_coder *coder = next->coder;
+ if (coder == NULL) {
+ coder = lzma_alloc(sizeof(lzma_auto_coder), allocator);
+ if (coder == NULL)
return LZMA_MEM_ERROR;
+ next->coder = coder;
next->code = &auto_decode;
next->end = &auto_decoder_end;
next->get_check = &auto_decoder_get_check;
next->memconfig = &auto_decoder_memconfig;
- next->coder->next = LZMA_NEXT_CODER_INIT;
+ coder->next = LZMA_NEXT_CODER_INIT;
}
- next->coder->memlimit = memlimit;
- next->coder->flags = flags;
- next->coder->sequence = SEQ_INIT;
+ coder->memlimit = memlimit;
+ coder->flags = flags;
+ coder->sequence = SEQ_INIT;
return LZMA_OK;
}