Fix clippy lints

src/api/config/mod.rs

@@ -422,10 +422,7 @@ impl Config {
         if config.height > AV1_LEVEL_MAX_V_SIZE[level_idx as usize] {
           return Err(LevelConstraintsExceeded);
         }
-        if ((config.width * config.height) as u64 * config.time_base.num
-          + config.time_base.den
-          - 1)
-          / config.time_base.den
+        if ((config.width * config.height) as u64 * config.time_base.num).div_ceil(config.time_base.den)
           > AV1_LEVEL_MAX_DISPLAY_RATE[level_idx as usize] as u64
         {
           return Err(LevelConstraintsExceeded);

src/context/block_unit.rs

@@ -676,7 +676,7 @@ impl IndexMut<PlaneBlockOffset> for FrameBlocks {
   }
 }
 
-impl<'a> ContextWriter<'a> {
+impl ContextWriter<'_> {
   pub fn get_cdf_intra_mode_kf(
     &self, bo: TileBlockOffset,
   ) -> &[u16; INTRA_MODES] {

src/context/frame_header.rs

@@ -45,7 +45,7 @@ impl CDFContext {
   }
 }
 
-impl<'a> ContextWriter<'a> {
+impl ContextWriter<'_> {
   fn get_ref_frame_ctx_b0(&self, bo: TileBlockOffset) -> usize {
     let ref_counts = self.bc.blocks[bo].neighbors_ref_counts;
 

src/context/mod.rs

@@ -177,7 +177,7 @@ pub fn get_mv_class(z: u32) -> (usize, u32) {
   (c, offset)
 }
 
-impl<'a> ContextWriter<'a> {
+impl ContextWriter<'_> {
   /// # Panics
   ///
   /// - If the `comp` is 0

src/context/partition_unit.rs

@@ -127,7 +127,7 @@ impl CFLParams {
   }
 }
 
-impl<'a> ContextWriter<'a> {
+impl ContextWriter<'_> {
   fn partition_gather_horz_alike(
     out: &mut [u16; 2], cdf_in: &[u16], _bsize: BlockSize,
   ) {
@@ -409,7 +409,7 @@ impl<'a> ContextWriter<'a> {
   }
 }
 
-impl<'a> BlockContext<'a> {
+impl BlockContext<'_> {
   /// # Panics
   ///
   /// - If called with a non-square `bsize`

src/context/transform_unit.rs

@@ -523,7 +523,7 @@ pub struct TXB_CTX {
   pub dc_sign_ctx: usize,
 }
 
-impl<'a> ContextWriter<'a> {
+impl ContextWriter<'_> {
   /// # Panics
   ///
   /// - If an invalid combination of `tx_type` and `tx_size` is passed

src/ec.rs

@@ -761,7 +761,6 @@ where
   /// - `n`: size of interval
   /// - `k`: "parameter"
   /// - `r`: reference
-
   fn count_signed_subexp_with_ref(
     &self, v: i32, low: i32, high: i32, k: u8, r: i32,
   ) -> u32 {

src/rdo.rs

@@ -189,8 +189,8 @@ pub fn sse_wxh<T: Pixel, F: Fn(Area, BlockSize) -> DistortionScale>(
 
   let imp_bsize = BlockSize::from_width_and_height(imp_block_w, imp_block_h);
 
-  let n_imp_blocks_w = (w + CHUNK_SIZE - 1) / CHUNK_SIZE;
-  let n_imp_blocks_h = (h + CHUNK_SIZE - 1) / CHUNK_SIZE;
+  let n_imp_blocks_w = w.div_ceil(CHUNK_SIZE);
+  let n_imp_blocks_h = h.div_ceil(CHUNK_SIZE);
 
   // TODO: Copying biases into a buffer is slow. It would be best if biases were
   // passed directly. To do this, we would need different versions of the
@@ -223,6 +223,8 @@ pub fn sse_wxh<T: Pixel, F: Fn(Area, BlockSize) -> DistortionScale>(
   ))
 }
 
+// TODO consider saturating_sub later
+#[allow(clippy::implicit_saturating_sub)]
 pub const fn clip_visible_bsize(
   frame_w: usize, frame_h: usize, bsize: BlockSize, x: usize, y: usize,
 ) -> (usize, usize) {

src/tiling/plane_region.rs

@@ -423,7 +423,7 @@ macro_rules! plane_region_common {
 plane_region_common!(PlaneRegion, as_ptr);
 plane_region_common!(PlaneRegionMut, as_mut_ptr, mut);
 
-impl<'a, T: Pixel> PlaneRegionMut<'a, T> {
+impl<T: Pixel> PlaneRegionMut<'_, T> {
   #[inline(always)]
   pub fn data_ptr_mut(&mut self) -> *mut T {
     self.data

src/tiling/tile.rs

@@ -203,7 +203,7 @@ macro_rules! tile_common {
 tile_common!(Tile, PlaneRegion, iter);
 tile_common!(TileMut, PlaneRegionMut, iter_mut, mut);
 
-impl<'a, T: Pixel> TileMut<'a, T> {
+impl<T: Pixel> TileMut<'_, T> {
   #[inline(always)]
   pub fn as_const(&self) -> Tile<'_, T> {
     Tile {

src/tiling/tile_restoration_state.rs

@@ -277,7 +277,7 @@ tile_restoration_plane_common!(
   mut
 );
 
-impl<'a> TileRestorationPlaneMut<'a> {
+impl TileRestorationPlaneMut<'_> {
   #[inline(always)]
   pub fn restoration_unit_mut(
     &mut self, sbo: TileSuperBlockOffset,
@@ -412,7 +412,7 @@ tile_restoration_state_common!(
   mut
 );
 
-impl<'a> TileRestorationStateMut<'a> {
+impl TileRestorationStateMut<'_> {
   #[inline(always)]
   pub const fn as_const(&self) -> TileRestorationState {
     TileRestorationState {

src/tiling/tiler.rs

@@ -115,29 +115,21 @@ impl TilingInfo {
       tile_width_sb_pre
     };
 
-    let cols = (frame_width_sb + tile_width_sb - 1) / tile_width_sb;
+    let cols = frame_width_sb.div_ceil(tile_width_sb);
 
     // Adjust tile_cols_log2 in case of rounding tile_width_sb to even.
     let tile_cols_log2 = Self::tile_log2(1, cols).unwrap();
     assert!(tile_cols_log2 >= min_tile_cols_log2);
 
-    let min_tile_rows_log2 = if min_tiles_log2 > tile_cols_log2 {
-      min_tiles_log2 - tile_cols_log2
-    } else {
-      0
-    };
+    let min_tile_rows_log2 = min_tiles_log2.saturating_sub(tile_cols_log2);
     let min_tile_rows_ratelimit_log2 =
-      if min_tiles_ratelimit_log2 > tile_cols_log2 {
-        min_tiles_ratelimit_log2 - tile_cols_log2
-      } else {
-        0
-      };
+      min_tiles_ratelimit_log2.saturating_sub(tile_cols_log2);
     let tile_rows_log2 = tile_rows_log2
       .max(min_tile_rows_log2)
       .clamp(min_tile_rows_ratelimit_log2, max_tile_rows_log2);
     let tile_height_sb = sb_rows.align_power_of_two_and_shift(tile_rows_log2);
 
-    let rows = (frame_height_sb + tile_height_sb - 1) / tile_height_sb;
+    let rows = frame_height_sb.div_ceil(tile_height_sb);
 
     Self {
       frame_width,