From 9a084347dbd744bb518cb0be624501f41176a81f Mon Sep 17 00:00:00 2001
From: DMSDeveloper <dmsdeveloper@mvms.vic.gov.au>
Date: Thu, 26 Apr 2018 12:02:02 +1000
Subject: [PATCH] removed itertools

---
 Cargo.toml                          |  1 -
 src/platform/windows/asio/stream.rs | 14 +++++++-------
 2 files changed, 7 insertions(+), 8 deletions(-)

diff --git a/Cargo.toml b/Cargo.toml
index b526289..d7f234d 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -11,7 +11,6 @@ keywords = ["audio", "sound"]
 [dependencies]
 failure = "0.1.5"
 lazy_static = "1.3"
-itertools = "0.7.8"
 
 [dev-dependencies]
 hound = "3.4"
diff --git a/src/platform/windows/asio/stream.rs b/src/platform/windows/asio/stream.rs
index 7a6fba3..e00e873 100644
--- a/src/platform/windows/asio/stream.rs
+++ b/src/platform/windows/asio/stream.rs
@@ -1,5 +1,4 @@
 extern crate asio_sys as sys;
-extern crate itertools;
 
 use std;
 use Format;
@@ -12,7 +11,6 @@ use UnknownTypeOutputBuffer;
 use UnknownTypeInputBuffer;
 use std::sync::{Arc, Mutex};
 use std::mem;
-use self::itertools::Itertools;
 use std::sync::atomic::{AtomicUsize, Ordering};
 
 pub struct EventLoop {
@@ -218,11 +216,13 @@ pub fn build_output_stream(
                                     // cpal writes to buffer interleaved
                                     fn deinterleave(data_slice: &mut [$SampleType],
                                                     num_channels: usize) -> Vec<Vec<$SampleType>>{
-                                        let mut channels: Vec<Vec<$SampleType>> = Vec::new();
-                                        for i in 0..num_channels{
-                                            let mut it = data_slice.iter().skip(i).cloned();
-                                            let channel = it.step(num_channels).collect();
-                                            channels.push(channel);
+                                        let channel_len = data_slice.len() / num_channels;
+                                        let mut channels: Vec<_> = (0..num_channels)
+                                            .map(|_| Vec::with_capacity(channel_len))
+                                            .collect();
+                                        for (i, &sample) in data_slice.iter().enumerate() {
+                                            let ch = i % num_channels;
+                                            channels[ch].push(sample);
                                         }
                                         channels
                                     }