Fix clippy::transmute_ptr_to_ptr

src/util/format/sample.rs

@@ -1,5 +1,4 @@
 use std::ffi::{CStr, CString};
-use std::mem;
 use std::ops::Index;
 use std::ptr;
 use std::slice;
@@ -7,7 +6,7 @@ use std::str::from_utf8_unchecked;
 
 use ffi::AVSampleFormat::*;
 use ffi::*;
-use libc::c_int;
+use libc::{c_int, c_void};
 
 #[derive(Eq, PartialEq, Copy, Clone, Debug)]
 pub enum Sample {
@@ -203,7 +202,7 @@ impl Clone for Buffer {
         unsafe {
             av_samples_copy(
                 self.buffer,
-                mem::transmute(source.buffer),
+                source.buffer as *const *mut u8,
                 0,
                 0,
                 source.samples as c_int,
@@ -218,7 +217,7 @@ impl Drop for Buffer {
     #[inline]
     fn drop(&mut self) {
         unsafe {
-            av_freep(mem::transmute(self.buffer));
+            av_freep(self.buffer as *mut c_void);
         }
     }
 }

src/util/frame/audio.rs

@@ -148,9 +148,7 @@ impl Audio {
             panic!("unsupported type");
         }
 
-        unsafe {
+        unsafe { slice::from_raw_parts((*self.as_ptr()).data[index] as *const T, self.samples()) }
-            slice::from_raw_parts(mem::transmute((*self.as_ptr()).data[index]), self.samples())
-        }
     }
 
     #[inline]
@@ -164,10 +162,7 @@ impl Audio {
         }
 
         unsafe {
-            slice::from_raw_parts_mut(
+            slice::from_raw_parts_mut((*self.as_mut_ptr()).data[index] as *mut T, self.samples())
-                mem::transmute((*self.as_mut_ptr()).data[index]),
-                self.samples(),
-            )
         }
     }
 

src/util/frame/video.rs

@@ -260,7 +260,7 @@ impl Video {
 
         unsafe {
             slice::from_raw_parts(
-                mem::transmute((*self.as_ptr()).data[index]),
+                (*self.as_ptr()).data[index] as *const T,
                 self.stride(index) * self.plane_height(index) as usize / mem::size_of::<T>(),
             )
         }
@@ -278,7 +278,7 @@ impl Video {
 
         unsafe {
             slice::from_raw_parts_mut(
-                mem::transmute((*self.as_mut_ptr()).data[index]),
+                (*self.as_mut_ptr()).data[index] as *mut T,
                 self.stride(index) * self.plane_height(index) as usize / mem::size_of::<T>(),
             )
         }