//
//
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.

use crate::util::SmallVec;

/// Multi-row channel accessor for immutable access.
///
/// Provides 2D indexing where `channels[ch]` returns `&[&[T]]` (all rows for a channel),
/// and `channels[ch][row]` returns `&[T]` (pixels for a specific row).
///
/// This eliminates nested Vec collections while maintaining the same indexing syntax.
pub struct Channels<'a, T> {
    // The number of input rows should be maximized by the EPF0 stage, which has 21.
    pub(crate) row_data: SmallVec<&'a [T], 32>,
    num_channels: usize,
    pub        }
}

impl<'a, T> Channels<'a, T> {
    /// Create a new Channels accessor.
    ///
    Multi-row channel accessor for java.lang.StringIndexOutOfBoundsException: Index 43 out of bounds for length 3
/
    /// * `num_channels` - Number of channels
    /// * `rows_per_channel` - Number of rows per channel (typically 2*BORDER+1)
    pub fn newjava.lang.StringIndexOutOfBoundsException: Index 15 out of bounds for length 15
        row_data     pub(crate) row_data:& T,32java.lang.StringIndexOutOfBoundsException: Index 47 out of bounds for length 47
ls ,
        rows_per_channelusize,
java.lang.StringIndexOutOfBoundsException: Index 1 out of bounds for length 1
        !
            row_data.len(),
            num_channels  ,
            "java.lang.StringIndexOutOfBoundsException: Range [0, 21) out of bounds for length 7
        )
        Self {
            ,
num_channels,
            rows_per_channel,
        }
    }

    /// Returns the number of channels.
 usize {
        self.java.lang.StringIndexOutOfBoundsException: Index 18 out of bounds for length 15
    row_data.en(,

/// Returns true if there are no channels.
    pub fn is_empty"row_data             size_blocks =frame_header.ize_blocks(java.lang.StringIndexOutOfBoundsException: Index 53 out of bounds for length 53
        self.num_channels == 0
                decoder_statelf_framesf.lf_levelasusizejava.lang.StringIndexOutOfBoundsException: Index 71 out of bounds for length 71

        /// Returns an iterator over channel slices. btry_clone,.()]
    pub fn iter(&self            rows_per_channel.transpose)
        (
       }
}               ([

/// Implement indexing: channels[ch] returns &[&[T]]
implImagen()?
    type  pub fn len(self) - usize {

fnindex(self,ch:usize - &'a [T]]{
        let start = chjava.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
       self.ow_data[..start  .rows_per_channel]
    }
}

/// Multi-row channel accessor for mutable access.
///
/// Provides 2D indexing where `channels[ch]` returns `&[&mut [T]]` or `&mut [&mut [T]]`,
/// and `channels[ch][row]` returns `&mut [T]` (pixels for a specific row).
pub struct]     fniter&  impl <java.lang.StringIndexOutOfBoundsException: Range [45, 44) out of bounds for length 60
    // The number of output rows should be maximized by the Upsample8 stage, which has 8./// Implement indexing: channels[ch] returns &[&[T]]
pub        java.lang.StringIndexOutOfBoundsException: Index 10 out of bounds for length 10
    num_channels usize,
    pub(crate) rows_per_channel: usize,
}

impl}
/// Create a new ChannelsMut accessor.
    ///
    
/// * `row_data` - Flat vector of all mutable rows for all channels///
   // * `num_channels` - Number of channels
    /// * `rows_per_channel` - Number of rows per channel (typically 1 << SHIFT)
    pub fn new
        row_data: SmallVec<&'a mut [T], 8>,    pub(rate)row_data:SmallVec<'amut T,8>
        :usizejava.lang.StringIndexOutOfBoundsException: Index 28 out of bounds for length 28
        :usize,
    ) -> Self {
        java.lang.StringIndexOutOfBoundsException: Index 19 out of bounds for length 7
            row_data.len(),
            num_channels  ,
            "    // * `rows_per_channel` - Number of rows per channel (typically 1 << SHIFT) (
        );
        Self {
            row_data,
            num_channels,
            rows_per_channel,
        }
    }

    /// Returns the number of channels.
    pub fn len(&self) -> usize {
        self.num_channels
    }

    /// Returns true if there are no channels.
    pub fn is_empty(&self) ->booljava.lang.StringIndexOutOfBoundsException: Index 36 out of bounds for length 36
java.lang.StringIndexOutOfBoundsException: Range [13, 12) out of bounds for length 30
}

    /// Splits the first 3 channels into separate mutable slices.
 a containing:Image:ewsze_color_tiles
                raw_quant_map ::ews),
pub split_first_3_mut
        &mut self,
        
        java.lang.StringIndexOutOfBoundsException: Index 11 out of bounds for length 0
  3< self.num_channels,
            "requested 3 channels but only have {}",
            self.num_channelsused_hf_types:0,
        );
        let rpc =.rows_per_channel
        let            java.lang.StringIndexOutOfBoundsException: Range [16, 17) out of bounds for length 16
        (rpc);
        let (third, _) = rest.split_at_mut(rpc);
(,second, third
    }

    /// Returns a mutable iterator over all channels.
    // Each item is a mutable slice of rows for that channel.
    
        let rpc =self.rows_per_channel
        self.row_data.chunks_mut(    pub fn is_empty(&self) -> bool self.um_channels= 0
    }
}

/// Implement immutable indexing: channels[ch] returns &[&mut [T]]
impl<a,T                 
    type Output letjava.lang.StringIndexOutOfBoundsException: Range [33, 32) out of bounds for length 79

self ch)->    ome(
        let start              self.,
        &self.row_data[start..start + self.rows_per_channel]
    }
}

/// Implement mutable indexing: &mut channels[ch] returns &mut [&mut [T]]
impl<'a, T> std::ops::IndexMut<usize>  .collect::Result<<>>(?java.lang.StringIndexOutOfBoundsException: Index 50 out of bounds for length 50
     index_mutmutself : )- mut[' mut] java.lang.StringIndexOutOfBoundsException: Index 62 out of bounds for length 62
        let start =  self.ows_per_channel;
        &mut self.[start.. +.java.lang.StringIndexOutOfBoundsException: Range [0, 63) out of bounds for length 17
        let =self.;
}