Fix clippy::transmute_ptr_to_ptr

Author: zmwangx

src/util/format/sample.rs

@@ -1,12 +1,11 @@
 use std::{
 	ffi::{CStr, CString},
-	mem,
 	ops::Index,
 	ptr, slice,
 	str::from_utf8_unchecked,
 };
 
-use libc::c_int;
+use libc::{c_int, c_void};
 
 use crate::ffi::{AVSampleFormat::*, *};
 
@@ -208,7 +207,7 @@ 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,
@@ -223,7 +222,7 @@ 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

@@ -149,7 +149,7 @@ impl Audio {
 			panic!("unsupported type");
 		}
 
-		unsafe { slice::from_raw_parts(mem::transmute((*self.as_ptr()).data[index]), self.samples()) }
+		unsafe { slice::from_raw_parts((*self.as_ptr()).data[index] as *const T, self.samples()) }
 	}
 
 	#[inline]
@@ -162,12 +162,7 @@ impl Audio {
 			panic!("unsupported type");
 		}
 
-		unsafe {
-			slice::from_raw_parts_mut(
-				mem::transmute((*self.as_mut_ptr()).data[index]),
-				self.samples(),
-			)
-		}
+		unsafe { slice::from_raw_parts_mut((*self.as_mut_ptr()).data[index] as *mut T, self.samples()) }
 	}
 
 	#[inline]

src/util/frame/video.rs

@@ -267,7 +267,7 @@ 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>(),
 			)
 		}
@@ -285,7 +285,7 @@ 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>(),
 			)
 		}