677 lines
18 KiB
C#
677 lines
18 KiB
C#
#region Copyright & License Information
|
|
/*
|
|
* Copyright 2007-2011 The OpenRA Developers (see AUTHORS)
|
|
* This file is part of OpenRA, which is free software. It is made
|
|
* available to you under the terms of the GNU General Public License
|
|
* as published by the Free Software Foundation. For more information,
|
|
* see COPYING.
|
|
*/
|
|
#endregion
|
|
|
|
using System;
|
|
using System.Collections.Generic;
|
|
using System.Linq;
|
|
using OpenRA.FileFormats;
|
|
using OpenRA.GameRules;
|
|
using OpenRA.Traits;
|
|
using Tao.OpenAl;
|
|
|
|
namespace OpenRA
|
|
{
|
|
public static class Sound
|
|
{
|
|
static ISoundEngine soundEngine;
|
|
static Cache<string, ISoundSource> sounds;
|
|
static ISoundSource rawSource;
|
|
static ISound music;
|
|
static ISound video;
|
|
static MusicInfo currentMusic;
|
|
|
|
static ISoundSource LoadSound(string filename)
|
|
{
|
|
if (!FileSystem.Exists(filename))
|
|
{
|
|
Log.Write("debug", "LoadSound, file does not exist: {0}", filename);
|
|
return null;
|
|
}
|
|
|
|
if (filename.ToLowerInvariant().EndsWith("wav"))
|
|
return LoadWave(new WavLoader(FileSystem.Open(filename)));
|
|
else
|
|
return LoadSoundRaw(AudLoader.LoadSound(FileSystem.Open(filename)));
|
|
}
|
|
|
|
static ISoundSource LoadWave(WavLoader wave)
|
|
{
|
|
return soundEngine.AddSoundSourceFromMemory(wave.RawOutput, wave.Channels, wave.BitsPerSample, wave.SampleRate);
|
|
}
|
|
|
|
static ISoundSource LoadSoundRaw(byte[] rawData)
|
|
{
|
|
return soundEngine.AddSoundSourceFromMemory(rawData, 1, 16, 22050);
|
|
}
|
|
|
|
static ISoundEngine CreateEngine(string engine)
|
|
{
|
|
engine = Game.Settings.Server.Dedicated?"Null":engine;
|
|
switch (engine)
|
|
{ /* TODO: if someone cares about pluggable crap here, ship this out */
|
|
case "AL": return new OpenAlSoundEngine();
|
|
case "Null": return new NullSoundEngine();
|
|
|
|
default:
|
|
throw new InvalidOperationException("Unsupported sound engine: {0}".F (engine));
|
|
}
|
|
}
|
|
|
|
public static void Create(string engine)
|
|
{
|
|
soundEngine = CreateEngine(engine);
|
|
}
|
|
|
|
public static void Initialize()
|
|
{
|
|
sounds = new Cache<string, ISoundSource>(LoadSound);
|
|
music = null;
|
|
currentMusic = null;
|
|
video = null;
|
|
}
|
|
|
|
public static void SetListenerPosition(float2 position) { soundEngine.SetListenerPosition(position); }
|
|
|
|
static ISound Play(Player player, string name, bool headRelative, PPos pos, float volumeModifier)
|
|
{
|
|
if (String.IsNullOrEmpty(name))
|
|
return null;
|
|
if (player != null && player != player.World.LocalPlayer)
|
|
return null;
|
|
|
|
return soundEngine.Play2D(sounds[name],
|
|
false, headRelative, pos.ToFloat2(),
|
|
InternalSoundVolume * volumeModifier, true);
|
|
}
|
|
|
|
public static ISound Play(string name) { return Play(null, name, true, PPos.Zero, 1); }
|
|
public static ISound Play(string name, PPos pos) { return Play(null, name, false, pos, 1); }
|
|
public static ISound Play(string name, float volumeModifier) { return Play(null, name, true, PPos.Zero, volumeModifier); }
|
|
public static ISound Play(string name, PPos pos, float volumeModifier) { return Play(null, name, false, pos, volumeModifier); }
|
|
public static ISound PlayToPlayer(Player player, string name) { return Play(player, name, true, PPos.Zero, 1); }
|
|
public static ISound PlayToPlayer(Player player, string name, PPos pos) { return Play(player, name, false, pos, 1); }
|
|
|
|
public static void PlayVideo(byte[] raw)
|
|
{
|
|
rawSource = LoadSoundRaw(raw);
|
|
video = soundEngine.Play2D(rawSource, false, true, float2.Zero, InternalSoundVolume, false);
|
|
}
|
|
|
|
public static void PlayVideo()
|
|
{
|
|
if (video != null)
|
|
soundEngine.PauseSound(video, false);
|
|
}
|
|
|
|
public static void PauseVideo()
|
|
{
|
|
if (video != null)
|
|
soundEngine.PauseSound(video, true);
|
|
}
|
|
|
|
public static void StopVideo()
|
|
{
|
|
if (video != null)
|
|
soundEngine.StopSound(video);
|
|
}
|
|
|
|
public static void Tick()
|
|
{
|
|
// Song finished
|
|
if (MusicPlaying && !music.Playing)
|
|
{
|
|
StopMusic();
|
|
OnMusicComplete();
|
|
}
|
|
}
|
|
|
|
static Action OnMusicComplete;
|
|
public static bool MusicPlaying { get; private set; }
|
|
public static MusicInfo CurrentMusic { get { return currentMusic; } }
|
|
|
|
public static void PlayMusic(MusicInfo m)
|
|
{
|
|
PlayMusicThen(m, () => { });
|
|
}
|
|
|
|
public static void PlayMusicThen(MusicInfo m, Action then)
|
|
{
|
|
if (m == null || !m.Exists)
|
|
return;
|
|
|
|
OnMusicComplete = then;
|
|
|
|
if (m == currentMusic && music != null)
|
|
{
|
|
soundEngine.PauseSound(music, false);
|
|
return;
|
|
}
|
|
StopMusic();
|
|
|
|
var sound = sounds[m.Filename];
|
|
if (sound == null) return;
|
|
|
|
music = soundEngine.Play2D(sound, false, true, float2.Zero, MusicVolume, false);
|
|
currentMusic = m;
|
|
MusicPlaying = true;
|
|
}
|
|
|
|
public static void PlayMusic()
|
|
{
|
|
if (music == null)
|
|
return;
|
|
MusicPlaying = true;
|
|
soundEngine.PauseSound(music, false);
|
|
}
|
|
|
|
public static void StopSound(ISound sound)
|
|
{
|
|
if (sound != null)
|
|
soundEngine.StopSound(sound);
|
|
}
|
|
|
|
public static void StopMusic()
|
|
{
|
|
if (music != null)
|
|
soundEngine.StopSound(music);
|
|
|
|
MusicPlaying = false;
|
|
currentMusic = null;
|
|
}
|
|
|
|
public static void PauseMusic()
|
|
{
|
|
if (music == null)
|
|
return;
|
|
|
|
MusicPlaying = false;
|
|
soundEngine.PauseSound(music, true);
|
|
}
|
|
|
|
public static float GlobalVolume
|
|
{
|
|
get { return soundEngine.Volume; }
|
|
set { soundEngine.Volume = value; }
|
|
}
|
|
|
|
static float soundVolumeModifier = 1.0f;
|
|
public static float SoundVolumeModifier
|
|
{
|
|
get { return soundVolumeModifier; }
|
|
set
|
|
{
|
|
soundVolumeModifier = value;
|
|
soundEngine.SetSoundVolume(InternalSoundVolume, music, video);
|
|
}
|
|
}
|
|
|
|
static float InternalSoundVolume { get { return SoundVolume * soundVolumeModifier; } }
|
|
public static float SoundVolume
|
|
{
|
|
get { return Game.Settings.Sound.SoundVolume; }
|
|
set
|
|
{
|
|
Game.Settings.Sound.SoundVolume = value;
|
|
soundEngine.SetSoundVolume(InternalSoundVolume, music, video);
|
|
}
|
|
}
|
|
|
|
public static float MusicVolume
|
|
{
|
|
get { return Game.Settings.Sound.MusicVolume; }
|
|
set
|
|
{
|
|
Game.Settings.Sound.MusicVolume = value;
|
|
if (music != null)
|
|
music.Volume = value;
|
|
}
|
|
}
|
|
|
|
public static float VideoVolume
|
|
{
|
|
get { return Game.Settings.Sound.VideoVolume; }
|
|
set
|
|
{
|
|
Game.Settings.Sound.VideoVolume = value;
|
|
if (video != null)
|
|
video.Volume = value;
|
|
}
|
|
}
|
|
|
|
public static float MusicSeekPosition
|
|
{
|
|
get { return (music != null) ? music.SeekPosition : 0; }
|
|
}
|
|
|
|
public static float VideoSeekPosition
|
|
{
|
|
get { return (video != null) ? video.SeekPosition : 0; }
|
|
}
|
|
|
|
// Returns true if played successfully
|
|
public static bool PlayPredefined(Player p, Actor voicedUnit, string type, string definition, string variant, bool attentuateVolume)
|
|
{
|
|
if (definition == null) return false;
|
|
|
|
if (Rules.Voices == null) return false;
|
|
if (Rules.Notifications == null) return false;
|
|
var rules = (voicedUnit != null) ? Rules.Voices[type] : Rules.Notifications[type];
|
|
if (rules == null) return false;
|
|
|
|
var ID = (voicedUnit != null) ? voicedUnit.ActorID : 0;
|
|
|
|
string clip;
|
|
var suffix = rules.DefaultVariant;
|
|
var prefix = rules.DefaultPrefix;
|
|
|
|
if (voicedUnit != null)
|
|
{
|
|
if (!rules.VoicePools.Value.ContainsKey("Attack"))
|
|
rules.VoicePools.Value.Add("Attack", rules.VoicePools.Value["Move"]);
|
|
|
|
if (!rules.VoicePools.Value.ContainsKey("AttackMove"))
|
|
rules.VoicePools.Value.Add("AttackMove", rules.VoicePools.Value["Move"]);
|
|
|
|
if (!rules.VoicePools.Value.ContainsKey(definition))
|
|
throw new InvalidOperationException("Can't find {0} in voice pool.".F(definition));
|
|
|
|
clip = rules.VoicePools.Value[definition].GetNext();
|
|
}
|
|
else
|
|
{
|
|
if (!rules.NotificationsPools.Value.ContainsKey(definition))
|
|
throw new InvalidOperationException("Can't find {0} in notification pool.".F(definition));
|
|
|
|
clip = rules.NotificationsPools.Value[definition].GetNext();
|
|
}
|
|
|
|
if (String.IsNullOrEmpty(clip)) return false;
|
|
|
|
if (variant != null)
|
|
{
|
|
if (rules.Variants.ContainsKey(variant) && !rules.DisableVariants.Contains(definition))
|
|
suffix = rules.Variants[variant][ID % rules.Variants[variant].Length];
|
|
if (rules.Prefixes.ContainsKey(variant) && !rules.DisablePrefixes.Contains(definition))
|
|
prefix = rules.Prefixes[variant][ID % rules.Prefixes[variant].Length];
|
|
}
|
|
|
|
var name = prefix + clip + suffix;
|
|
|
|
if (!String.IsNullOrEmpty(name) && (p == null || p == p.World.LocalPlayer))
|
|
soundEngine.Play2D(sounds[name],
|
|
false, true, float2.Zero,
|
|
InternalSoundVolume, attentuateVolume);
|
|
|
|
return true;
|
|
}
|
|
|
|
public static bool PlayVoice(string phrase, Actor voicedUnit, string variant)
|
|
{
|
|
if (voicedUnit == null) return false;
|
|
if (phrase == null) return false;
|
|
|
|
var mi = voicedUnit.Info.Traits.GetOrDefault<SelectableInfo>();
|
|
if (mi == null) return false;
|
|
if (mi.Voice == null) return false;
|
|
|
|
var type = mi.Voice.ToLowerInvariant();
|
|
|
|
return PlayPredefined(null, voicedUnit, type, phrase, variant, true);
|
|
}
|
|
|
|
public static bool PlayNotification(Player player, string type, string notification, string variant)
|
|
{
|
|
if (type == null) return false;
|
|
if (notification == null) return false;
|
|
|
|
return PlayPredefined(player, null, type.ToLowerInvariant(), notification, variant, false);
|
|
}
|
|
}
|
|
|
|
interface ISoundEngine
|
|
{
|
|
ISoundSource AddSoundSourceFromMemory(byte[] data, int channels, int sampleBits, int sampleRate);
|
|
ISound Play2D(ISoundSource sound, bool loop, bool relative, float2 pos, float volume, bool attenuateVolume);
|
|
float Volume { get; set; }
|
|
void PauseSound(ISound sound, bool paused);
|
|
void StopSound(ISound sound);
|
|
void SetAllSoundsPaused(bool paused);
|
|
void StopAllSounds();
|
|
void SetListenerPosition(float2 position);
|
|
void SetSoundVolume(float volume, ISound music, ISound video);
|
|
}
|
|
|
|
interface ISoundSource { }
|
|
|
|
public interface ISound
|
|
{
|
|
float Volume { get; set; }
|
|
float SeekPosition { get; }
|
|
bool Playing { get; }
|
|
}
|
|
|
|
class OpenAlSoundEngine : ISoundEngine
|
|
{
|
|
class PoolSlot
|
|
{
|
|
public bool isActive;
|
|
public int frameStarted;
|
|
public float2 pos;
|
|
public bool isRelative;
|
|
public ISoundSource sound;
|
|
}
|
|
|
|
float volume = 1f;
|
|
Dictionary<int, PoolSlot> sourcePool = new Dictionary<int, PoolSlot>();
|
|
const int POOL_SIZE = 32;
|
|
|
|
public OpenAlSoundEngine()
|
|
{
|
|
//var str = Alc.alcGetString(IntPtr.Zero, Alc.ALC_DEFAULT_DEVICE_SPECIFIER);
|
|
var dev = Alc.alcOpenDevice(null);
|
|
if (dev == IntPtr.Zero)
|
|
throw new InvalidOperationException("Can't create OpenAL device");
|
|
var ctx = Alc.alcCreateContext(dev, IntPtr.Zero);
|
|
if (ctx == IntPtr.Zero)
|
|
throw new InvalidOperationException("Can't create OpenAL context");
|
|
Alc.alcMakeContextCurrent(ctx);
|
|
|
|
for (var i = 0; i < POOL_SIZE; i++)
|
|
{
|
|
var source = 0;
|
|
Al.alGenSources(1, out source);
|
|
if (0 != Al.alGetError())
|
|
{
|
|
Log.Write("debug", "Failed generating OpenAL source {0}", i);
|
|
return;
|
|
}
|
|
|
|
sourcePool.Add(source, new PoolSlot() { isActive = false });
|
|
}
|
|
}
|
|
|
|
int GetSourceFromPool()
|
|
{
|
|
foreach (var kvp in sourcePool)
|
|
{
|
|
if (!kvp.Value.isActive)
|
|
{
|
|
sourcePool[kvp.Key].isActive = true;
|
|
return kvp.Key;
|
|
}
|
|
}
|
|
|
|
List<int> freeSources = new List<int>();
|
|
foreach (int key in sourcePool.Keys)
|
|
{
|
|
int state;
|
|
Al.alGetSourcei(key, Al.AL_SOURCE_STATE, out state);
|
|
if (state != Al.AL_PLAYING && state != Al.AL_PAUSED)
|
|
freeSources.Add(key);
|
|
}
|
|
|
|
if (freeSources.Count == 0)
|
|
return -1;
|
|
|
|
foreach (int i in freeSources)
|
|
sourcePool[i].isActive = false;
|
|
|
|
sourcePool[freeSources[0]].isActive = true;
|
|
|
|
return freeSources[0];
|
|
}
|
|
|
|
public ISoundSource AddSoundSourceFromMemory(byte[] data, int channels, int sampleBits, int sampleRate)
|
|
{
|
|
return new OpenAlSoundSource(data, channels, sampleBits, sampleRate);
|
|
}
|
|
|
|
const int maxInstancesPerFrame = 3;
|
|
const int groupDistance = 64;
|
|
const int groupDistanceSqr = groupDistance * groupDistance;
|
|
|
|
public ISound Play2D(ISoundSource sound, bool loop, bool relative, float2 pos, float volume, bool attenuateVolume)
|
|
{
|
|
if (sound == null)
|
|
{
|
|
Log.Write("debug", "Attempt to Play2D a null `ISoundSource`");
|
|
return null;
|
|
}
|
|
|
|
var world = Game.orderManager.world;
|
|
int currFrame = world != null ? world.FrameNumber : 0;
|
|
float atten = 1f;
|
|
|
|
// Check if max # of instances-per-location reached:
|
|
if (attenuateVolume)
|
|
{
|
|
int instances = 0, activeCount = 0;
|
|
foreach (var s in sourcePool.Values)
|
|
{
|
|
if (!s.isActive)
|
|
continue;
|
|
if (s.isRelative != relative)
|
|
continue;
|
|
|
|
++activeCount;
|
|
if (s.sound != sound)
|
|
continue;
|
|
if (currFrame - s.frameStarted >= 5)
|
|
continue;
|
|
|
|
// Too far away to count?
|
|
var lensqr = (s.pos - pos).LengthSquared;
|
|
if (lensqr >= groupDistanceSqr)
|
|
continue;
|
|
|
|
// If we are starting too many instances of the same sound within a short time then stop this one:
|
|
if (++instances == maxInstancesPerFrame)
|
|
return null;
|
|
}
|
|
|
|
// Attenuate a little bit based on number of active sounds:
|
|
atten = 0.66f * ((POOL_SIZE - activeCount * 0.5f) / POOL_SIZE);
|
|
}
|
|
|
|
int source = GetSourceFromPool();
|
|
if (source == -1) return null;
|
|
|
|
var slot = sourcePool[source];
|
|
slot.pos = pos;
|
|
slot.frameStarted = currFrame;
|
|
slot.sound = sound;
|
|
slot.isRelative = relative;
|
|
return new OpenAlSound(source, (sound as OpenAlSoundSource).buffer, loop, relative, pos, volume * atten);
|
|
}
|
|
|
|
public float Volume
|
|
{
|
|
get { return volume; }
|
|
set { Al.alListenerf(Al.AL_GAIN, volume = value); }
|
|
}
|
|
|
|
public void PauseSound(ISound sound, bool paused)
|
|
{
|
|
if (sound == null) return;
|
|
|
|
int key = ((OpenAlSound)sound).source;
|
|
int state;
|
|
Al.alGetSourcei(key, Al.AL_SOURCE_STATE, out state);
|
|
if (state == Al.AL_PLAYING && paused)
|
|
Al.alSourcePause(key);
|
|
else if (state == Al.AL_PAUSED && !paused)
|
|
Al.alSourcePlay(key);
|
|
}
|
|
|
|
public void SetAllSoundsPaused(bool paused)
|
|
{
|
|
foreach (int key in sourcePool.Keys)
|
|
{
|
|
int state;
|
|
Al.alGetSourcei(key, Al.AL_SOURCE_STATE, out state);
|
|
if (state == Al.AL_PLAYING && paused)
|
|
Al.alSourcePause(key);
|
|
else if (state == Al.AL_PAUSED && !paused)
|
|
Al.alSourcePlay(key);
|
|
|
|
}
|
|
}
|
|
|
|
public void SetSoundVolume(float volume, ISound music, ISound video)
|
|
{
|
|
var sounds = sourcePool.Select(s => s.Key).Where(b =>
|
|
{
|
|
int state;
|
|
Al.alGetSourcei(b, Al.AL_SOURCE_STATE, out state);
|
|
return ((state == Al.AL_PLAYING || state == Al.AL_PAUSED) &&
|
|
((music != null) ? b != ((OpenAlSound)music).source : true) &&
|
|
((video != null) ? b != ((OpenAlSound)video).source : true));
|
|
}).ToList();
|
|
foreach (var s in sounds)
|
|
{
|
|
Al.alSourcef(s, Al.AL_GAIN, volume);
|
|
}
|
|
}
|
|
|
|
public void StopSound(ISound sound)
|
|
{
|
|
if (sound == null) return;
|
|
|
|
int key = ((OpenAlSound)sound).source;
|
|
int state;
|
|
Al.alGetSourcei(key, Al.AL_SOURCE_STATE, out state);
|
|
if (state == Al.AL_PLAYING || state == Al.AL_PAUSED)
|
|
Al.alSourceStop(key);
|
|
}
|
|
|
|
public void StopAllSounds()
|
|
{
|
|
foreach (int key in sourcePool.Keys)
|
|
{
|
|
int state;
|
|
Al.alGetSourcei(key, Al.AL_SOURCE_STATE, out state);
|
|
if (state == Al.AL_PLAYING || state == Al.AL_PAUSED)
|
|
Al.alSourceStop(key);
|
|
}
|
|
}
|
|
|
|
public void SetListenerPosition(float2 position)
|
|
{
|
|
var orientation = new[] { 0f, 0f, 1f, 0f, -1f, 0f };
|
|
|
|
Al.alListener3f(Al.AL_POSITION, position.X, position.Y, 50);
|
|
Al.alListenerfv(Al.AL_ORIENTATION, ref orientation[0]);
|
|
Al.alListenerf(Al.AL_METERS_PER_UNIT, .01f);
|
|
}
|
|
}
|
|
|
|
class OpenAlSoundSource : ISoundSource
|
|
{
|
|
public readonly int buffer;
|
|
|
|
static int MakeALFormat(int channels, int bits)
|
|
{
|
|
if (channels == 1)
|
|
return bits == 16 ? Al.AL_FORMAT_MONO16 : Al.AL_FORMAT_MONO8;
|
|
else
|
|
return bits == 16 ? Al.AL_FORMAT_STEREO16 : Al.AL_FORMAT_STEREO8;
|
|
}
|
|
|
|
public OpenAlSoundSource(byte[] data, int channels, int sampleBits, int sampleRate)
|
|
{
|
|
Al.alGenBuffers(1, out buffer);
|
|
Al.alBufferData(buffer, MakeALFormat(channels, sampleBits), data, data.Length, sampleRate);
|
|
}
|
|
}
|
|
|
|
class OpenAlSound : ISound
|
|
{
|
|
public readonly int source = -1;
|
|
float volume = 1f;
|
|
|
|
public OpenAlSound(int source, int buffer, bool looping, bool relative, float2 pos, float volume)
|
|
{
|
|
if (source == -1) return;
|
|
this.source = source;
|
|
Al.alSourcef(source, Al.AL_PITCH, 1f);
|
|
Volume = volume;
|
|
Al.alSource3f(source, Al.AL_POSITION, pos.X, pos.Y, 0f);
|
|
Al.alSource3f(source, Al.AL_VELOCITY, 0f, 0f, 0f);
|
|
Al.alSourcei(source, Al.AL_BUFFER, buffer);
|
|
Al.alSourcei(source, Al.AL_LOOPING, looping ? Al.AL_TRUE : Al.AL_FALSE);
|
|
Al.alSourcei(source, Al.AL_SOURCE_RELATIVE, relative ? 1 : 0);
|
|
Al.alSourcef(source, Al.AL_REFERENCE_DISTANCE, 160);
|
|
Al.alSourcef(source, Al.AL_MAX_DISTANCE, 3200 / Game.viewport.Zoom);
|
|
Al.alSourcePlay(source);
|
|
}
|
|
|
|
public float Volume
|
|
{
|
|
get { return volume; }
|
|
set
|
|
{
|
|
if (source != -1)
|
|
Al.alSourcef(source, Al.AL_GAIN, volume = value);
|
|
}
|
|
}
|
|
|
|
public float SeekPosition
|
|
{
|
|
get
|
|
{
|
|
float pos;
|
|
Al.alGetSourcef(source, Al.AL_SAMPLE_OFFSET, out pos);
|
|
return pos / 22050f;
|
|
}
|
|
}
|
|
|
|
public bool Playing
|
|
{
|
|
get
|
|
{
|
|
int state;
|
|
Al.alGetSourcei(source, Al.AL_SOURCE_STATE, out state);
|
|
return state == Al.AL_PLAYING;
|
|
}
|
|
}
|
|
}
|
|
|
|
class NullSoundEngine : ISoundEngine
|
|
{
|
|
public ISoundSource AddSoundSourceFromMemory(byte[] data, int channels, int sampleBits, int sampleRate)
|
|
{
|
|
return new NullSoundSource();
|
|
}
|
|
|
|
public ISound Play2D(ISoundSource sound, bool loop, bool relative, float2 pos, float volume, bool attenuateVolume)
|
|
{
|
|
return new NullSound();
|
|
}
|
|
|
|
public void PauseSound(ISound sound, bool paused) {}
|
|
public void StopSound(ISound sound) {}
|
|
public void SetAllSoundsPaused(bool paused) {}
|
|
public void StopAllSounds() {}
|
|
public void SetListenerPosition(float2 position) {}
|
|
public void SetSoundVolume(float volume, ISound music, ISound video) {}
|
|
|
|
public float Volume { get; set; }
|
|
}
|
|
|
|
class NullSoundSource : ISoundSource {}
|
|
|
|
class NullSound : ISound
|
|
{
|
|
public float Volume { get; set; }
|
|
public float SeekPosition { get { return 0; } }
|
|
public bool Playing { get { return false; } }
|
|
}
|
|
}
|