Merge remote-tracking branch 'origin/master' into features/32-bit-float-samples

src/encoder/mod.rs

@@ -1,9 +1,9 @@
-use byteorder::NativeEndian;
 use std::collections::BTreeMap;
 use std::convert::TryFrom;
 use std::io::{Seek, Write};
 use std::mem;
 
+use bytecast;
 use tags::{self, ResolutionUnit, Tag, Type};
 use error::{TiffError, TiffFormatError, TiffResult};
 
@@ -60,9 +60,7 @@ impl TiffValue for [i8] {
     }
 
     fn write<W: Write>(&self, writer: &mut TiffWriter<W>) -> TiffResult<()> {
-        // We write using nativeedian so this should be safe
-        let slice =
-            unsafe { ::std::slice::from_raw_parts(self.as_ptr() as *const u8, self.len()) };
+        let slice = bytecast::i8_as_ne_bytes(self);
         writer.write_bytes(slice)?;
         Ok(())
     }
@@ -77,9 +75,7 @@ impl TiffValue for [u16] {
     }
 
     fn write<W: Write>(&self, writer: &mut TiffWriter<W>) -> TiffResult<()> {
-        // We write using nativeedian so this sould be safe
-        let slice =
-            unsafe { ::std::slice::from_raw_parts(self.as_ptr() as *const u8, self.len() * 2) };
+        let slice = bytecast::u16_as_ne_bytes(self);
         writer.write_bytes(slice)?;
         Ok(())
     }
@@ -94,9 +90,7 @@ impl TiffValue for [i16] {
     }
 
     fn write<W: Write>(&self, writer: &mut TiffWriter<W>) -> TiffResult<()> {
-        // We write using nativeedian so this should be safe
-        let slice =
-            unsafe { ::std::slice::from_raw_parts(self.as_ptr() as *const u8, self.len() * Self::BYTE_LEN as usize) };
+        let slice = bytecast::i16_as_ne_bytes(self);
         writer.write_bytes(slice)?;
         Ok(())
     }
@@ -111,9 +105,7 @@ impl TiffValue for [u32] {
     }
 
     fn write<W: Write>(&self, writer: &mut TiffWriter<W>) -> TiffResult<()> {
-        // We write using nativeedian so this sould be safe
-        let slice =
-            unsafe { ::std::slice::from_raw_parts(self.as_ptr() as *const u8, self.len() * 4) };
+        let slice = bytecast::u32_as_ne_bytes(self);
         writer.write_bytes(slice)?;
         Ok(())
     }
@@ -128,9 +120,7 @@ impl TiffValue for [i32] {
     }
 
     fn write<W: Write>(&self, writer: &mut TiffWriter<W>) -> TiffResult<()> {
-        // We write using nativeedian so this should be safe
-        let slice =
-            unsafe { ::std::slice::from_raw_parts(self.as_ptr() as *const u8, self.len() * Self::BYTE_LEN as usize) };
+        let slice = bytecast::i32_as_ne_bytes(self);
         writer.write_bytes(slice)?;
         Ok(())
     }
@@ -145,9 +135,7 @@ impl TiffValue for [u64] {
     }
 
     fn write<W: Write>(&self, writer: &mut TiffWriter<W>) -> TiffResult<()> {
-        // We write using nativeedian so this sould be safe
-        let slice =
-            unsafe { ::std::slice::from_raw_parts(self.as_ptr() as *const u8, self.len() * 8) };
+        let slice = bytecast::u64_as_ne_bytes(self);
         writer.write_bytes(slice)?;
         Ok(())
     }
@@ -163,8 +151,7 @@ impl TiffValue for [f32] {
 
     fn write<W: Write>(&self, writer: &mut TiffWriter<W>) -> TiffResult<()> {
         // We write using nativeedian so this sould be safe
-        let slice =
-            unsafe { ::std::slice::from_raw_parts(self.as_ptr() as *const u8, self.len() * 4) };
+        let slice = bytecast::f32_as_ne_bytes(self);
         writer.write_bytes(slice)?;
         Ok(())
     }
@@ -180,8 +167,7 @@ impl TiffValue for [f64] {
 
     fn write<W: Write>(&self, writer: &mut TiffWriter<W>) -> TiffResult<()> {
         // We write using nativeedian so this sould be safe
-        let slice =
-            unsafe { ::std::slice::from_raw_parts(self.as_ptr() as *const u8, self.len() * 8) };
+        let slice = bytecast::f64_as_ne_bytes(self);
         writer.write_bytes(slice)?;
         Ok(())
     }
@@ -437,7 +423,7 @@ impl<W: Write + Seek> TiffEncoder<W> {
             writer: TiffWriter::new(writer),
         };
 
-        NativeEndian::write_header(&mut encoder.writer)?;
+        write_tiff_header(&mut encoder.writer)?;
         // blank the IFD offset location
         encoder.writer.write_u32(0)?;
 
@@ -598,7 +584,7 @@ impl<'a, W: Write + Seek> Drop for DirectoryEncoder<'a, W> {
 /// let mut tiff = TiffEncoder::new(&mut file).unwrap();
 /// let mut image = tiff.new_image::<colortype::RGB8>(100, 100).unwrap();
 ///
-/// // You can encode tags here 
+/// // You can encode tags here
 /// image.encoder().write_tag(Tag::Artist, "Image-tiff").unwrap();
 ///
 /// let mut idx = 0;