adds resampler benchmark (implemented through UniformSource)

Cargo.toml

@@ -62,6 +62,10 @@ harness = false
 name = "conversions"
 harness = false
 
+[[bench]]
+name = "resampler"
+harness = false
+
 [[example]]
 name = "music_m4a"
 required-features = ["symphonia-isomp4", "symphonia-aac"]

benches/resampler.rs

@@ -0,0 +1,42 @@
+use divan::Bencher;
+use rodio::source::UniformSourceIterator;
+
+mod shared;
+use rodio::Source;
+use shared::TestSource;
+
+fn main() {
+    divan::main();
+}
+
+#[divan::bench]
+fn no_resampling(bencher: Bencher) {
+    bencher
+        .with_inputs(|| {
+            let source = TestSource::<i16>::music_wav();
+            (source.channels(), source.sample_rate(), source)
+        })
+        .bench_values(|(channels, sample_rate, source)| {
+            UniformSourceIterator::<_, i16>::new(source, channels, sample_rate)
+                .for_each(divan::black_box_drop)
+        })
+}
+
+// taken from: https://github.com/audiojs/sample-rate/readme.md commit: be31b67
+const COMMON_SAMPLE_RATES: [u32; 12] = [
+    8_000, 11_025, 16_000, 22_050, 44_100, 48_000, 88_200, 96_000, 176_400, 192_000, 352_800,
+    384_000,
+];
+
+#[divan::bench(args = COMMON_SAMPLE_RATES)]
+fn resample_to(bencher: Bencher, target_sample_rate: u32) {
+    bencher
+        .with_inputs(|| {
+            let source = TestSource::<i16>::music_wav();
+            (source.channels(), source)
+        })
+        .bench_values(|(channels, source)| {
+            UniformSourceIterator::<_, i16>::new(source, channels, target_sample_rate)
+                .for_each(divan::black_box_drop)
+        })
+}