osu/osu.Game/Skinning/SkinnableSound.cs

208 lines
6.8 KiB
C#

// Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
// See the LICENCE file in the repository root for full licence text.
#nullable disable
using System;
using System.Collections.Generic;
using System.Linq;
using JetBrains.Annotations;
using osu.Framework.Allocation;
using osu.Framework.Audio;
using osu.Framework.Bindables;
using osu.Framework.Extensions.IEnumerableExtensions;
using osu.Framework.Graphics;
using osu.Framework.Graphics.Audio;
using osu.Framework.Graphics.Containers;
using osu.Game.Audio;
namespace osu.Game.Skinning
{
/// <summary>
/// A sound consisting of one or more samples to be played.
/// </summary>
public class SkinnableSound : SkinReloadableDrawable, IAdjustableAudioComponent
{
public override bool RemoveWhenNotAlive => false;
public override bool RemoveCompletedTransforms => false;
/// <summary>
/// Whether to play the underlying sample when aggregate volume is zero.
/// Note that this is checked at the point of calling <see cref="Play"/>; changing the volume post-play will not begin playback.
/// Defaults to false unless <see cref="Looping"/>.
/// </summary>
/// <remarks>
/// Can serve as an optimisation if it is known ahead-of-time that this behaviour is allowed in a given use case.
/// </remarks>
protected bool PlayWhenZeroVolume => Looping;
/// <summary>
/// All raw <see cref="DrawableSamples"/>s contained in this <see cref="SkinnableSound"/>.
/// </summary>
[NotNull, ItemNotNull]
protected IEnumerable<DrawableSample> DrawableSamples => samplesContainer.Select(c => c.Sample).Where(s => s != null);
private readonly AudioContainer<PoolableSkinnableSample> samplesContainer;
[Resolved(CanBeNull = true)]
private IPooledSampleProvider samplePool { get; set; }
/// <summary>
/// Creates a new <see cref="SkinnableSound"/>.
/// </summary>
public SkinnableSound()
{
InternalChild = samplesContainer = new AudioContainer<PoolableSkinnableSample>();
}
/// <summary>
/// Creates a new <see cref="SkinnableSound"/> with some initial samples.
/// </summary>
/// <param name="samples">The initial samples.</param>
public SkinnableSound([NotNull] IEnumerable<ISampleInfo> samples)
: this()
{
this.samples = samples.ToArray();
}
/// <summary>
/// Creates a new <see cref="SkinnableSound"/> with an initial sample.
/// </summary>
/// <param name="sample">The initial sample.</param>
public SkinnableSound([NotNull] ISampleInfo sample)
: this(new[] { sample })
{
}
private ISampleInfo[] samples = Array.Empty<ISampleInfo>();
/// <summary>
/// The samples that should be played.
/// </summary>
public ISampleInfo[] Samples
{
get => samples;
set
{
value ??= Array.Empty<ISampleInfo>();
if (samples == value)
return;
samples = value;
if (LoadState >= LoadState.Ready)
updateSamples();
}
}
private bool looping;
/// <summary>
/// Whether the samples should loop on completion.
/// </summary>
public bool Looping
{
get => looping;
set
{
if (value == looping) return;
looping = value;
samplesContainer.ForEach(c => c.Looping = looping);
}
}
/// <summary>
/// Plays the samples.
/// </summary>
public virtual void Play()
{
samplesContainer.ForEach(c =>
{
if (PlayWhenZeroVolume || c.AggregateVolume.Value > 0)
{
c.Stop();
c.Play();
}
});
}
protected override void LoadAsyncComplete()
{
// ensure samples are constructed before SkinChanged() is called via base.LoadAsyncComplete().
if (!samplesContainer.Any())
updateSamples();
base.LoadAsyncComplete();
}
/// <summary>
/// Stops the samples.
/// </summary>
public virtual void Stop()
{
samplesContainer.ForEach(c => c.Stop());
}
private void updateSamples()
{
bool wasPlaying = IsPlaying;
// Remove all pooled samples (return them to the pool), and dispose the rest.
samplesContainer.RemoveAll(s => s.IsInPool, false);
samplesContainer.Clear();
foreach (var s in samples)
{
var sample = samplePool?.GetPooledSample(s) ?? new PoolableSkinnableSample(s);
sample.Looping = Looping;
sample.Volume.Value = s.Volume / 100.0;
samplesContainer.Add(sample);
}
if (wasPlaying && Looping)
Play();
}
#region Re-expose AudioContainer
public BindableNumber<double> Volume => samplesContainer.Volume;
public BindableNumber<double> Balance => samplesContainer.Balance;
public BindableNumber<double> Frequency => samplesContainer.Frequency;
public BindableNumber<double> Tempo => samplesContainer.Tempo;
public void BindAdjustments(IAggregateAudioAdjustment component) => samplesContainer.BindAdjustments(component);
public void UnbindAdjustments(IAggregateAudioAdjustment component) => samplesContainer.UnbindAdjustments(component);
public void AddAdjustment(AdjustableProperty type, IBindable<double> adjustBindable) => samplesContainer.AddAdjustment(type, adjustBindable);
public void RemoveAdjustment(AdjustableProperty type, IBindable<double> adjustBindable) => samplesContainer.RemoveAdjustment(type, adjustBindable);
public void RemoveAllAdjustments(AdjustableProperty type) => samplesContainer.RemoveAllAdjustments(type);
/// <summary>
/// Whether any samples are currently playing.
/// </summary>
public bool IsPlaying => samplesContainer.Any(s => s.Playing);
public bool IsPlayed => samplesContainer.Any(s => s.Played);
public IBindable<double> AggregateVolume => samplesContainer.AggregateVolume;
public IBindable<double> AggregateBalance => samplesContainer.AggregateBalance;
public IBindable<double> AggregateFrequency => samplesContainer.AggregateFrequency;
public IBindable<double> AggregateTempo => samplesContainer.AggregateTempo;
#endregion
}
}