Fixed a memory leak

Added unpack_end() when decompressor is dealloced.

Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 name = "decrunch"
-version = "0.1.0"
+version = "0.1.1"
 authors = ["Istvan Fehervari <gooksl@gmail.com>"]
 description = "Decoder for crunch-compressed texture data."
 license = "MIT"

crunch/crn_decomp.cpp

@@ -25,6 +25,11 @@ void *crnd_unpack_begin(const void *pData, crnd::uint32 data_size)
     return crnd::crnd_unpack_begin(pData, data_size);
 }
 
+bool crnd_unpack_end(crnd::crnd_unpack_context pContext)
+{
+    return crnd::crnd_unpack_end(pContext);
+}
+
 bool crnd_unpack_level(
     crnd::crnd_unpack_context pContext,
     void **ppDst, crnd::uint32 dst_size_in_bytes, crnd::uint32 row_pitch_in_bytes,

src/crunch.rs

@@ -39,6 +39,8 @@ extern "C" {
 
     fn crnd_unpack_begin(pData: *const uint8_t, data_size: uint32_t) -> *const c_void;
 
+    fn crnd_unpack_end(ctx: *const c_void) -> c_int;
+
     fn crnd_unpack_level(
         pContext: *const c_void,
         ppDst: *const *const uint8_t,
@@ -95,3 +97,9 @@ pub fn unpack_level(
         ) > 0
     }
 }
+
+pub fn unpack_end(ctx: *const c_void) {
+    unsafe {
+        crnd_unpack_end(ctx);
+    }
+}

src/lib.rs

@@ -183,12 +183,19 @@ impl<'a> CrunchedData<'a> {
             &mut dst,
             info.blocks_x * info.bytes_per_block,
             level,
-        ) {
+        )
+        {
             return None;
         }
         Some(dst)
     }
 }
 
+impl<'a> Drop for CrunchedData<'a> {
+    fn drop(&mut self) {
+        crunch::unpack_end(self.ctx);
+    }
+}
+
 #[cfg(test)]
 mod tests;