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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 | #region License/* FNA - XNA4 Reimplementation for Desktop Platforms * Copyright 2009-2016 Ethan Lee and the MonoGame Team * * Released under the Microsoft Public License. * See LICENSE for details. */#endregion#region Using Statementsusing System;#endregionnamespace Microsoft.Xna.Framework.Audio{ public class SoundEffectInstance : IDisposable { #region Public Properties public bool IsDisposed { get; protected set; } private bool INTERNAL_looped = false; public virtual bool IsLooped { get { return INTERNAL_looped; } set { INTERNAL_looped = value; if (INTERNAL_alSource != null) { AudioDevice.ALDevice.SetSourceLooped( INTERNAL_alSource, value ); } } } private float INTERNAL_pan = 0.0f; public float Pan { get { return INTERNAL_pan; } set { INTERNAL_pan = value; if (INTERNAL_alSource != null) { AudioDevice.ALDevice.SetSourcePan( INTERNAL_alSource, value ); } } } private float INTERNAL_pitch = 0f; public float Pitch { get { return INTERNAL_pitch; } set { INTERNAL_pitch = value; if (INTERNAL_alSource != null) { AudioDevice.ALDevice.SetSourcePitch( INTERNAL_alSource, value, !INTERNAL_isXACTSource ); } } } public SoundState State { get { if (INTERNAL_alSource == null) { return SoundState.Stopped; } SoundState result = AudioDevice.ALDevice.GetSourceState( INTERNAL_alSource ); if (result == SoundState.Stopped && isDynamic) { // Force playing at all times for DSFI! return SoundState.Playing; } return result; } } private float INTERNAL_volume = 1.0f; public float Volume { get { return INTERNAL_volume; } set { INTERNAL_volume = value; if (INTERNAL_alSource != null) { AudioDevice.ALDevice.SetSourceVolume( INTERNAL_alSource, value ); } } } #endregion #region Internal Variables: XACT Filters internal byte FilterType; #endregion #region Private Variables: XNA Implementation private SoundEffect INTERNAL_parentEffect; private WeakReference selfReference; internal bool isDynamic; /* FNA' XACT runtime wraps around SoundEffect for audio output. * Only problem: XACT pitch has no boundaries, SoundEffect does. * So, we're going to use this to tell the pitch clamp to STFU. * -flibit */ internal bool INTERNAL_isXACTSource = false; #endregion #region Private Variables: AL Source, EffectSlot internal IALSource INTERNAL_alSource; private IALReverb INTERNAL_alReverb; #endregion #region Private Variables: 3D Audio protected Vector3 position = new Vector3(0.0f, 0.0f, 0.1f); // Used to prevent outdated positional audio data from being used protected bool INTERNAL_positionalAudio = false; #endregion #region Internal Constructor internal SoundEffectInstance(SoundEffect parent) { INTERNAL_parentEffect = parent; if (INTERNAL_parentEffect != null) { selfReference = new WeakReference(this); INTERNAL_parentEffect.Instances.Add(selfReference); } isDynamic = false; } #endregion #region Destructor ~SoundEffectInstance() { Dispose(); } #endregion #region Public Dispose Method public virtual void Dispose() { if (!IsDisposed) { Stop(true); if (INTERNAL_parentEffect != null) { INTERNAL_parentEffect.Instances.Remove(selfReference); selfReference = null; } IsDisposed = true; } } #endregion #region Public 3D Audio Methods public void Apply3D(AudioListener listener, AudioEmitter emitter) { if (INTERNAL_alSource == null) { return; } // Set up orientation matrix Matrix orientation = Matrix.CreateWorld(Vector3.Zero, listener.Forward, listener.Up); // Set up our final position according to orientation of listener position = Vector3.Transform(emitter.Position - listener.Position, orientation); if (position != Vector3.Zero) { position.Normalize(); } // Set the position based on relative positon AudioDevice.ALDevice.SetSourcePosition( INTERNAL_alSource, position ); // We positional now INTERNAL_positionalAudio = true; } public void Apply3D(AudioListener[] listeners, AudioEmitter emitter) { throw new NotSupportedException("OpenAL can only make use of one listener."); } #endregion #region Public Playback Methods public virtual void Play() { if (State != SoundState.Stopped) { return; } if (INTERNAL_alSource != null) { // The sound has stopped, but hasn't cleaned up yet... AudioDevice.ALDevice.StopAndDisposeSource(INTERNAL_alSource); INTERNAL_alSource = null; } INTERNAL_alSource = AudioDevice.ALDevice.GenSource( INTERNAL_parentEffect.INTERNAL_buffer ); if (INTERNAL_alSource == null) { FNAPlatform.Log("WARNING: AL SOURCE WAS NOT AVAILABLE. SKIPPING."); return; } // Apply Pan/Position if (INTERNAL_positionalAudio) { INTERNAL_positionalAudio = false; AudioDevice.ALDevice.SetSourcePosition( INTERNAL_alSource, position ); } else { Pan = Pan; } // Reassign Properties, in case the AL properties need to be applied. Volume = Volume; IsLooped = IsLooped; Pitch = Pitch; // Apply EFX if (INTERNAL_alReverb != null) { AudioDevice.ALDevice.SetSourceReverb( INTERNAL_alSource, INTERNAL_alReverb ); } AudioDevice.ALDevice.PlaySource(INTERNAL_alSource); } public void Pause() { if (INTERNAL_alSource != null && State == SoundState.Playing) { AudioDevice.ALDevice.PauseSource(INTERNAL_alSource); } } public void Resume() { if (INTERNAL_alSource == null) { // XNA4 just plays if we've not started yet. Play(); } else if (State == SoundState.Paused) { AudioDevice.ALDevice.ResumeSource(INTERNAL_alSource); } } public void Stop() { if (INTERNAL_alSource != null) { // TODO: GraphicsResource-like reference management -flibit if (AudioDevice.ALDevice != null) { AudioDevice.ALDevice.StopAndDisposeSource(INTERNAL_alSource); DynamicSoundEffectInstance dsfi = this as DynamicSoundEffectInstance; if (dsfi != null && AudioDevice.DynamicInstancePool.Contains(dsfi)) { AudioDevice.DynamicInstancePool.Remove(dsfi); } } INTERNAL_alSource = null; } } public void Stop(bool immediate) { Stop(); } #endregion #region Internal Effects Methods internal void INTERNAL_applyReverb(IALReverb reverb) { INTERNAL_alReverb = reverb; if (INTERNAL_alSource != null) { AudioDevice.ALDevice.SetSourceReverb( INTERNAL_alSource, INTERNAL_alReverb ); } } internal void INTERNAL_applyLowPassFilter(float hfGain) { if (INTERNAL_alSource != null) { AudioDevice.ALDevice.SetSourceLowPassFilter(INTERNAL_alSource, hfGain); } } internal void INTERNAL_applyHighPassFilter(float lfGain) { if (INTERNAL_alSource != null) { AudioDevice.ALDevice.SetSourceHighPassFilter(INTERNAL_alSource, lfGain); } } internal void INTERNAL_applyBandPassFilter(float hfGain, float lfGain) { if (INTERNAL_alSource != null) { AudioDevice.ALDevice.SetSourceBandPassFilter(INTERNAL_alSource, hfGain, lfGain); } } #endregion }} |
