adds pipeline benchmarks (to see effect of #706)

Author: dvdsk

Cargo.toml

@@ -79,6 +79,10 @@ harness = false
 name = "resampler"
 harness = false
 
+[[bench]]
+name = "pipeline"
+harness = false
+
 [[example]]
 name = "music_m4a"
 required-features = ["symphonia-isomp4", "symphonia-aac"]

benches/pipeline.rs

@@ -0,0 +1,47 @@
+use std::time::Duration;
+
+use divan::Bencher;
+use rodio::{source::UniformSourceIterator, Source};
+
+mod shared;
+use shared::music_wav;
+
+fn main() {
+    divan::main();
+}
+
+#[divan::bench]
+fn long(bencher: Bencher) {
+    bencher.with_inputs(|| music_wav()).bench_values(|source| {
+        let mut take_dur = source
+            .high_pass(300)
+            .amplify(1.2)
+            .speed(0.9)
+            .automatic_gain_control(
+                1.0,   // target_level
+                4.0,   // attack_time (in seconds)
+                0.005, // release_time (in seconds)
+                5.0,   // absolute_max_gain
+            )
+            .delay(Duration::from_secs_f32(0.5))
+            .fade_in(Duration::from_secs_f32(2.0))
+            .take_duration(Duration::from_secs(10));
+        take_dur.set_filter_fadeout();
+        let effects_applied = take_dur
+            .buffered()
+            .reverb(Duration::from_secs_f32(0.05), 0.3)
+            .skippable();
+        let resampled = UniformSourceIterator::new(effects_applied, 2, 40_000);
+        resampled.for_each(divan::black_box_drop)
+    })
+}
+
+#[divan::bench]
+fn short(bencher: Bencher) {
+    bencher.with_inputs(|| music_wav()).bench_values(|source| {
+        source
+            .amplify(1.2)
+            .low_pass(200)
+            .for_each(divan::black_box_drop)
+    })
+}