Add some benchmarks for parsing some RTP packets

Cargo.toml

@@ -14,3 +14,10 @@ rust-version = '1.57.0'
 [dependencies]
 smallvec = { version = "1", features = ["union"] }
 thiserror = "1"
+
+[dev-dependencies]
+criterion = "0.5"
+
+[[bench]]
+name = "parse"
+harness = false

benches/parse.rs

@@ -0,0 +1,73 @@
+// SPDX-License-Identifier: MIT OR Apache-2.0
+
+use criterion::{
+    criterion_group, criterion_main, AxisScale, BenchmarkId, Criterion, PlotConfiguration,
+};
+use rtp_types::RtpPacket;
+
+static ONLY_HEADER: [u8; 12] = [
+    0x80, 0x60, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08, 0x09, 0x10,
+];
+
+static SINGLE_CSRC: [u8; 16] = [
+    0x81, 0x60, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08, 0x09, 0x10, 0x11, 0x12, 0x13, 0x14,
+];
+static EXTENSION: [u8; 20] = [
+    0x90, 0x60, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08, 0x09, 0x0a, 0x0b, 0x0c, 0x00, 0x1,
+    0x0d, 0x0e, 0x0f, 0x10,
+];
+static PADDING: [u8; 16] = [
+    0xa0, 0x60, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08, 0x09, 0x0a, 0x0b, 0x0c, 0x00, 0x02,
+];
+
+fn parse(data: &[u8]) {
+    let _rtp = RtpPacket::parse(data).unwrap();
+}
+
+fn bench_parse(c: &mut Criterion) {
+    let payload16 = [1; 16];
+    let payload256 = [2; 256];
+    let payload1280 = [3; 1280];
+    let payload65280 = [4; 65280];
+
+    let rtp16 = ONLY_HEADER.into_iter().chain(payload16).collect::<Vec<_>>();
+    let rtp256 = ONLY_HEADER
+        .into_iter()
+        .chain(payload256)
+        .collect::<Vec<_>>();
+    let rtp1280 = ONLY_HEADER
+        .into_iter()
+        .chain(payload1280)
+        .collect::<Vec<_>>();
+    let rtp65280 = ONLY_HEADER
+        .into_iter()
+        .chain(payload65280)
+        .collect::<Vec<_>>();
+
+    let packet_data = [
+        ("Header", ONLY_HEADER.as_slice()),
+        ("CSRC", SINGLE_CSRC.as_slice()),
+        ("Extension", EXTENSION.as_slice()),
+        ("Padding", PADDING.as_slice()),
+        ("Payload16", rtp16.as_slice()),
+        ("Payload256", rtp256.as_slice()),
+        ("Payload1280", rtp1280.as_slice()),
+        ("Payload65280", rtp65280.as_slice()),
+    ];
+
+    let mut group = c.benchmark_group("Packet/Parse");
+    for (name, data) in packet_data {
+        let plot_config = PlotConfiguration::default().summary_scale(AxisScale::Logarithmic);
+        group.plot_config(plot_config);
+
+        group.throughput(criterion::Throughput::Bytes(data.len() as u64));
+
+        group.bench_with_input(BenchmarkId::from_parameter(name), &data, |b, data| {
+            b.iter(|| parse(data))
+        });
+    }
+    group.finish();
+}
+
+criterion_group!(packet_parse, bench_parse);
+criterion_main!(packet_parse);