fixing types on lzss decoder

Author: andreagilardoni

src/decompress/lzss.cpp

@@ -241,16 +241,18 @@ LZSSDecoder::status LZSSDecoder::handle_state() {
     return res;
 }
 
-LZSSDecoder::status LZSSDecoder::decompress(const char* buffer, uint32_t size) {
+LZSSDecoder::status LZSSDecoder::decompress(uint8_t* const buffer, uint32_t size) {
     if(!get_char_cbk) {
-        this->in_buffer = (uint8_t*)buffer;
+        this->in_buffer = buffer;
         this->available += size;
     }
 
     status res = IN_PROGRESS;
 
     while((res = handle_state()) == IN_PROGRESS);
 
+    this->in_buffer = nullptr;
+
     return res;
 }
 

src/decompress/lzss.h

@@ -56,7 +56,7 @@ class LZSSDecoder {
      * decode the provided buffer until buffer ends, then pause the process
      * @return DONE if the decompression is completed, NOT_COMPLETED if not
      */
-    status decompress(const char* buffer=nullptr, uint32_t size=0);
+    status decompress(uint8_t* const buffer=nullptr, uint32_t size=0);
 
     static const int LZSS_EOF = -1;
     static const int LZSS_BUFFER_EMPTY = -2;
@@ -93,7 +93,7 @@ class LZSSDecoder {
     int i, r;
 
     std::function<void(const uint8_t)> put_char_cbk=nullptr;
-    std::function<void(const uint8_t)> get_char_cbk=nullptr;
+    std::function<uint8_t()> get_char_cbk=nullptr;
 
     inline void putc(const uint8_t c) { if(put_char_cbk) { put_char_cbk(c); } }