// Augmented Audio: Audio libraries and applications
// Copyright (c) 2022 Pedro Tacla Yamada
//
// The MIT License (MIT)
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
// THE SOFTWARE.
use augmented_midi::{parse_midi_file, ParserState};
use criterion::{black_box, criterion_group, criterion_main, BatchSize, Criterion};

fn criterion_benchmark(c: &mut Criterion) {
    let mut group = c.benchmark_group("augmented_midi");

    group.bench_function("augmented_midi::parse_midi_event", |b| {
        let input_buffer = [0x9_8, 0x3C, 0x44];
        let mut parser_state = ParserState::default();
        b.iter(|| {
            let mut output =
                augmented_midi::parse_midi_event::<&[u8]>(&input_buffer, &mut parser_state);
            black_box(&mut output);
        });
    });

    group.bench_function(
        "augmented_midi::parse_midi_event - owned buffer (more similar to rimd)",
        |b| {
            let input_buffer = [0x9_8, 0x3C, 0x44];
            let mut parser_state = ParserState::default();
            b.iter(|| {
                let mut output =
                    augmented_midi::parse_midi_event::<Vec<u8>>(&input_buffer, &mut parser_state);
                black_box(&mut output);
            });
        },
    );

    let input_path = format!(
        "{}/test-files/c1_4over4_1bar.mid",
        env!("CARGO_MANIFEST_DIR")
    );
    let input_file = std::fs::read(input_path).unwrap();
    group.bench_with_input(
        "augmented_midi::parse_midi_file",
        &input_file,
        |b, input_file| {
            b.iter(|| {
                let result = parse_midi_file::<&str, &[u8]>(input_file).unwrap();
                black_box(result);
            });
        },
    );

    {
        group.bench_function(
            "rimd::MidiMessage::from_bytes - considering input allocation",
            |b| {
                b.iter(|| {
                    let input_buffer = vec![0x9_8, 0x3C, 0x44];
                    let mut output = rimd::MidiMessage::from_bytes(input_buffer);
                    black_box(&mut output);
                });
            },
        );

        group.bench_function(
            "rimd::MidiMessage::from_bytes - ignoring input allocation",
            |b| {
                b.iter_batched(
                    || vec![0x9_8, 0x3C, 0x44],
                    |input_buffer| {
                        let mut output = rimd::MidiMessage::from_bytes(input_buffer);
                        black_box(&mut output);
                    },
                    BatchSize::SmallInput,
                );
            },
        );

        group.bench_with_input("rimd::SMF::from_reader", &input_file, |b, input_file| {
            b.iter_batched(
                || std::io::Cursor::new(input_file),
                |mut cursor| {
                    let result = rimd::SMF::from_reader(&mut cursor).unwrap();
                    black_box(result);
                },
                BatchSize::SmallInput,
            );
        });
    }
}

criterion_group!(benches, criterion_benchmark,);
criterion_main!(benches);