replace vec.truncate(0) with vec.clear()

[nihav.git] / nihav-indeo / src / codecs / ivibr.rs

diff --git a/nihav-indeo/src/codecs/ivibr.rs b/nihav-indeo/src/codecs/ivibr.rs
index 2169b6956280a30c8d26b18e19910eec90c12cf9..8ce4d1b03d1729538c4447b6cc0417e488f45cb1 100644 (file)
--- a/nihav-indeo/src/codecs/ivibr.rs
+++ b/nihav-indeo/src/codecs/ivibr.rs
@@ -510,8 +510,8 @@ impl IVIDecoder {
     fn realloc(&mut self, pic_hdr: &PictureHeader) -> DecoderResult<()> {
         let planes = if pic_hdr.transparent { 4 } else { 3 };
 
-        //self.bands.truncate(0);
-        self.tiles.truncate(0);
+        //self.bands.clear();
+        self.tiles.clear();
         self.num_tiles  = [[0; 4]; 4];
         self.tile_start = [[0; 4]; 4];
         let mut tstart: usize = 0;
@@ -552,7 +552,7 @@ impl IVIDecoder {
         }
         Ok(())
     }
-    fn decode_band(&mut self, pic_hdr: &PictureHeader, dec: &mut IndeoXParser, br: &mut BitReader, plane_no: usize, band_no: usize) -> DecoderResult<()> {
+    fn decode_band(&mut self, pic_hdr: &PictureHeader, dec: &mut dyn IndeoXParser, br: &mut BitReader, plane_no: usize, band_no: usize) -> DecoderResult<()> {
         let bidx = match plane_no {
             0 => { band_no },
             _ => { pic_hdr.luma_bands + plane_no - 1 },
@@ -582,7 +582,7 @@ impl IVIDecoder {
                 let mb_h = (tile.h + mb_size - 1) / mb_size;
                 tile.mb_w = mb_w;
                 tile.mb_h = mb_h;
-                tile.mb.truncate(0);
+                tile.mb.clear();
                 tile.mb.resize(mb_w * mb_h, MB::new(0, 0));
             }
 
@@ -827,7 +827,7 @@ br.skip(skip_part as u32)?;
         unreachable!();
     }
 
-    fn decode_single_frame<'a>(&mut self, dec: &mut IndeoXParser, br: &mut BitReader<'a>) -> DecoderResult<NABufferType> {
+    fn decode_single_frame<'a>(&mut self, dec: &mut dyn IndeoXParser, br: &mut BitReader<'a>) -> DecoderResult<NABufferType> {
         let pic_hdr = dec.decode_picture_header(br)?;
         self.ftype = pic_hdr.ftype;
         if pic_hdr.ftype.is_null() {
@@ -914,7 +914,7 @@ br.skip(skip_part as u32)?;
         Ok(buftype)
     }
 
-    pub fn decode_frame<'a>(&mut self, dec: &mut IndeoXParser, br: &mut BitReader<'a>) -> DecoderResult<NABufferType> {
+    pub fn decode_frame<'a>(&mut self, dec: &mut dyn IndeoXParser, br: &mut BitReader<'a>) -> DecoderResult<NABufferType> {
         let res = self.decode_single_frame(dec, br);
         if res.is_err() { return res; }
         if (self.ftype == IVIFrameType::Intra) && (br.left() > 16) {
@@ -931,8 +931,8 @@ br.skip(skip_part as u32)?;
                 let seq = br.peek(21);
                 if seq == 0xBFFF8 {
                     let res2 = self.decode_single_frame(dec, br);
-                    if res2.is_ok() {
-                        self.bref = Some(res2.unwrap());
+                    if let Ok(res) = res2 {
+                        self.bref = Some(res);
                     }
                 }
                 self.ftype = IVIFrameType::Intra;