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Location: alysbrooks-public/games/isometric-park-fna/FNA/src/Audio/SoundEffect.cs - annotation

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Commit Description:
Tweak calculations....
Commit Description:
Tweak calculations. Prevent a negative number of visitors and separate visitors from donors.
References:
r704:a2765e9341f6 m7-leisure
File last commit:
r690:61b56ab85b41 default
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FNA/src/Audio/SoundEffect.cs
801 lines | 17.8 KiB | text/x-csharp | CSharpLexer
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alys
Early working version (including all dependencies, lol).
 r0 #region License
/* FNA - XNA4 Reimplementation for Desktop Platforms
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 r690 * Copyright 2009-2022 Ethan Lee and the MonoGame Team
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 r0 *
* Released under the Microsoft Public License.
* See LICENSE for details.
*/
#endregion
#region Using Statements
using System;
using System.IO;
using System.Collections.Generic;
using System.Runtime.InteropServices;
#endregion
namespace Microsoft.Xna.Framework.Audio
{
// http://msdn.microsoft.com/en-us/library/microsoft.xna.framework.audio.soundeffect.aspx
public sealed class SoundEffect : IDisposable
{
#region Public Properties
public TimeSpan Duration
{
get
{
return TimeSpan.FromSeconds(
(double) handle.PlayLength /
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 r690 (double) sampleRate
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 r0 );
}
}
public bool IsDisposed
{
get;
private set;
}
public string Name
{
get;
set;
}
#endregion
#region Public Static Properties
public static float MasterVolume
{
get
{
float result;
FAudio.FAudioVoice_GetVolume(
Device().MasterVoice,
out result
);
return result;
}
set
{
FAudio.FAudioVoice_SetVolume(
Device().MasterVoice,
value,
0
);
}
}
public static float DistanceScale
{
get
{
return Device().CurveDistanceScaler;
}
set
{
if (value <= 0.0f)
{
throw new ArgumentOutOfRangeException("value <= 0.0f");
}
Device().CurveDistanceScaler = value;
}
}
public static float DopplerScale
{
get
{
return Device().DopplerScale;
}
set
{
if (value < 0.0f)
{
throw new ArgumentOutOfRangeException("value < 0.0f");
}
Device().DopplerScale = value;
}
}
public static float SpeedOfSound
{
get
{
return Device().SpeedOfSound;
}
set
{
FAudioContext dev = Device();
dev.SpeedOfSound = value;
FAudio.F3DAudioInitialize(
dev.DeviceDetails.OutputFormat.dwChannelMask,
dev.SpeedOfSound,
dev.Handle3D
);
}
}
#endregion
#region Internal Variables
internal List<WeakReference> Instances = new List<WeakReference>();
internal FAudio.FAudioBuffer handle;
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 r690 internal IntPtr formatPtr;
internal ushort channels;
internal uint sampleRate;
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 r0 internal uint loopStart;
internal uint loopLength;
#endregion
#region Public Constructors
public SoundEffect(
byte[] buffer,
int sampleRate,
AudioChannels channels
) : this(
null,
buffer,
0,
buffer.Length,
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 r690 null,
alys
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 r0 1,
(ushort) channels,
(uint) sampleRate,
(uint) (sampleRate * ((ushort) channels * 2)),
(ushort) ((ushort) channels * 2),
16,
0,
0
) {
}
public SoundEffect(
byte[] buffer,
int offset,
int count,
int sampleRate,
AudioChannels channels,
int loopStart,
int loopLength
) : this(
null,
buffer,
offset,
count,
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 r690 null,
alys
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 r0 1,
(ushort) channels,
(uint) sampleRate,
(uint) (sampleRate * ((ushort) channels * 2)),
(ushort) ((ushort) channels * 2),
16,
loopStart,
loopLength
) {
}
#endregion
#region Internal Constructor
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 r690 internal unsafe SoundEffect(
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 r0 string name,
byte[] buffer,
int offset,
int count,
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 r690 byte[] extraData,
alys
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 r0 ushort wFormatTag,
ushort nChannels,
uint nSamplesPerSec,
uint nAvgBytesPerSec,
ushort nBlockAlign,
ushort wBitsPerSample,
int loopStart,
int loopLength
) {
Device();
Name = name;
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 r690 channels = nChannels;
sampleRate = nSamplesPerSec;
alys
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 r0 this.loopStart = (uint) loopStart;
this.loopLength = (uint) loopLength;
/* Buffer format */
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 r690 if (extraData == null)
{
formatPtr = Marshal.AllocHGlobal(
Marshal.SizeOf(typeof(FAudio.FAudioWaveFormatEx))
);
}
else
{
formatPtr = Marshal.AllocHGlobal(
Marshal.SizeOf(typeof(FAudio.FAudioWaveFormatEx)) +
extraData.Length
);
Marshal.Copy(
extraData,
0,
formatPtr + Marshal.SizeOf(typeof(FAudio.FAudioWaveFormatEx)),
extraData.Length
);
}
FAudio.FAudioWaveFormatEx* pcm = (FAudio.FAudioWaveFormatEx*) formatPtr;
pcm->wFormatTag = wFormatTag;
pcm->nChannels = nChannels;
pcm->nSamplesPerSec = nSamplesPerSec;
pcm->nAvgBytesPerSec = nAvgBytesPerSec;
pcm->nBlockAlign = nBlockAlign;
pcm->wBitsPerSample = wBitsPerSample;
pcm->cbSize = (ushort) ((extraData == null) ? 0 : extraData.Length);
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 r0
/* Easy stuff */
handle = new FAudio.FAudioBuffer();
handle.Flags = FAudio.FAUDIO_END_OF_STREAM;
handle.pContext = IntPtr.Zero;
/* Buffer data */
handle.AudioBytes = (uint) count;
handle.pAudioData = Marshal.AllocHGlobal(count);
Marshal.Copy(
buffer,
offset,
handle.pAudioData,
count
);
/* Play regions */
handle.PlayBegin = 0;
if (wFormatTag == 1)
{
handle.PlayLength = (uint) (
count /
nChannels /
(wBitsPerSample / 8)
);
}
else if (wFormatTag == 2)
{
handle.PlayLength = (uint) (
count /
nBlockAlign *
(((nBlockAlign / nChannels) - 6) * 2)
);
}
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 r690 else if (wFormatTag == 0x166)
{
FAudio.FAudioXMA2WaveFormatEx* xma2 = (FAudio.FAudioXMA2WaveFormatEx*) formatPtr;
// dwSamplesEncoded / nChannels / (wBitsPerSample / 8) doesn't always (if ever?) match up.
handle.PlayLength = xma2->dwPlayLength;
}
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 r0
/* Set by Instances! */
handle.LoopBegin = 0;
handle.LoopLength = 0;
handle.LoopCount = 0;
}
#endregion
#region Destructor
~SoundEffect()
{
if (Instances.Count > 0)
{
// STOP LEAKING YOUR INSTANCES, ARGH
GC.ReRegisterForFinalize(this);
return;
}
Dispose();
}
#endregion
#region Public Methods
public void Dispose()
{
if (!IsDisposed)
{
/* FIXME: Is it ironic that we're generating
* garbage with ToArray while cleaning up after
* the program's leaks?
* -flibit
*/
foreach (WeakReference instance in Instances.ToArray())
{
object target = instance.Target;
if (target != null)
{
(target as IDisposable).Dispose();
}
}
Instances.Clear();
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 r690 Marshal.FreeHGlobal(formatPtr);
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 r0 Marshal.FreeHGlobal(handle.pAudioData);
IsDisposed = true;
}
}
public bool Play()
{
return Play(1.0f, 0.0f, 0.0f);
}
public bool Play(float volume, float pitch, float pan)
{
SoundEffectInstance instance = new SoundEffectInstance(this);
instance.Volume = volume;
instance.Pitch = pitch;
instance.Pan = pan;
instance.Play();
if (instance.State != SoundState.Playing)
{
// Ran out of AL sources, probably.
instance.Dispose();
return false;
}
return true;
}
public SoundEffectInstance CreateInstance()
{
return new SoundEffectInstance(this);
}
#endregion
#region Public Static Methods
public static TimeSpan GetSampleDuration(
int sizeInBytes,
int sampleRate,
AudioChannels channels
) {
sizeInBytes /= 2; // 16-bit PCM!
int ms = (int) (
(sizeInBytes / (int) channels) /
(sampleRate / 1000.0f)
);
return new TimeSpan(0, 0, 0, 0, ms);
}
public static int GetSampleSizeInBytes(
TimeSpan duration,
int sampleRate,
AudioChannels channels
) {
return (int) (
duration.TotalSeconds *
sampleRate *
(int) channels *
2 // 16-bit PCM!
);
}
public static SoundEffect FromStream(Stream stream)
{
// Sample data
byte[] data;
// WaveFormatEx data
ushort wFormatTag;
ushort nChannels;
uint nSamplesPerSec;
uint nAvgBytesPerSec;
ushort nBlockAlign;
ushort wBitsPerSample;
// ushort cbSize;
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 r690 int samplerLoopStart = 0;
int samplerLoopEnd = 0;
alys
Early working version (including all dependencies, lol).
 r0 using (BinaryReader reader = new BinaryReader(stream))
{
// RIFF Signature
string signature = new string(reader.ReadChars(4));
if (signature != "RIFF")
{
throw new NotSupportedException("Specified stream is not a wave file.");
}
reader.ReadUInt32(); // Riff Chunk Size
string wformat = new string(reader.ReadChars(4));
if (wformat != "WAVE")
{
throw new NotSupportedException("Specified stream is not a wave file.");
}
// WAVE Header
string format_signature = new string(reader.ReadChars(4));
while (format_signature != "fmt ")
{
reader.ReadBytes(reader.ReadInt32());
format_signature = new string(reader.ReadChars(4));
}
int format_chunk_size = reader.ReadInt32();
wFormatTag = reader.ReadUInt16();
nChannels = reader.ReadUInt16();
nSamplesPerSec = reader.ReadUInt32();
nAvgBytesPerSec = reader.ReadUInt32();
nBlockAlign = reader.ReadUInt16();
wBitsPerSample = reader.ReadUInt16();
// Reads residual bytes
if (format_chunk_size > 16)
{
reader.ReadBytes(format_chunk_size - 16);
}
// data Signature
string data_signature = new string(reader.ReadChars(4));
while (data_signature.ToLowerInvariant() != "data")
{
reader.ReadBytes(reader.ReadInt32());
data_signature = new string(reader.ReadChars(4));
}
if (data_signature != "data")
{
throw new NotSupportedException("Specified wave file is not supported.");
}
int waveDataLength = reader.ReadInt32();
data = reader.ReadBytes(waveDataLength);
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 r690
// Scan for other chunks
while (reader.PeekChar() != -1)
{
char[] chunkIDChars = reader.ReadChars(4);
if (chunkIDChars.Length < 4)
{
break; // EOL!
}
byte[] chunkSizeBytes = reader.ReadBytes(4);
if (chunkSizeBytes.Length < 4)
{
break; // EOL!
}
string chunk_signature = new string(chunkIDChars);
int chunkDataSize = BitConverter.ToInt32(chunkSizeBytes, 0);
if (chunk_signature == "smpl") // "smpl", Sampler Chunk Found
{
reader.ReadUInt32(); // Manufacturer
reader.ReadUInt32(); // Product
reader.ReadUInt32(); // Sample Period
reader.ReadUInt32(); // MIDI Unity Note
reader.ReadUInt32(); // MIDI Pitch Fraction
reader.ReadUInt32(); // SMPTE Format
reader.ReadUInt32(); // SMPTE Offset
uint numSampleLoops = reader.ReadUInt32();
int samplerData = reader.ReadInt32();
for (int i = 0; i < numSampleLoops; i += 1)
{
reader.ReadUInt32(); // Cue Point ID
reader.ReadUInt32(); // Type
int start = reader.ReadInt32();
int end = reader.ReadInt32();
reader.ReadUInt32(); // Fraction
reader.ReadUInt32(); // Play Count
if (i == 0) // Grab loopStart and loopEnd from first sample loop
{
samplerLoopStart = start;
samplerLoopEnd = end;
}
}
if (samplerData != 0) // Read Sampler Data if it exists
{
reader.ReadBytes(samplerData);
}
}
else // Read unwanted chunk data and try again
{
reader.ReadBytes(chunkDataSize);
}
}
// End scan
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 r0 }
return new SoundEffect(
null,
data,
0,
data.Length,
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 r690 null,
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 r0 wFormatTag,
nChannels,
nSamplesPerSec,
nAvgBytesPerSec,
nBlockAlign,
wBitsPerSample,
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 r690 samplerLoopStart,
samplerLoopEnd - samplerLoopStart
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 r0 );
}
#endregion
#region FAudio Context
internal class FAudioContext
{
public static FAudioContext Context = null;
public readonly IntPtr Handle;
public readonly byte[] Handle3D;
public readonly IntPtr MasterVoice;
public readonly FAudio.FAudioDeviceDetails DeviceDetails;
public float CurveDistanceScaler;
public float DopplerScale;
public float SpeedOfSound;
public IntPtr ReverbVoice;
private FAudio.FAudioVoiceSends reverbSends;
private FAudioContext(IntPtr ctx, uint devices)
{
Handle = ctx;
uint i;
for (i = 0; i < devices; i += 1)
{
FAudio.FAudio_GetDeviceDetails(
Handle,
i,
out DeviceDetails
);
if ((DeviceDetails.Role & FAudio.FAudioDeviceRole.FAudioDefaultGameDevice) == FAudio.FAudioDeviceRole.FAudioDefaultGameDevice)
{
break;
}
}
if (i == devices)
{
i = 0; /* Oh well. */
FAudio.FAudio_GetDeviceDetails(
Handle,
i,
out DeviceDetails
);
}
if (FAudio.FAudio_CreateMasteringVoice(
Handle,
out MasterVoice,
FAudio.FAUDIO_DEFAULT_CHANNELS,
FAudio.FAUDIO_DEFAULT_SAMPLERATE,
0,
i,
IntPtr.Zero
) != 0) {
FAudio.FAudio_Release(ctx);
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 r690 Handle = IntPtr.Zero;
alys
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 r0 FNALoggerEXT.LogError(
"Failed to create mastering voice!"
);
return;
}
CurveDistanceScaler = 1.0f;
DopplerScale = 1.0f;
SpeedOfSound = 343.5f;
Handle3D = new byte[FAudio.F3DAUDIO_HANDLE_BYTESIZE];
FAudio.F3DAudioInitialize(
DeviceDetails.OutputFormat.dwChannelMask,
SpeedOfSound,
Handle3D
);
Context = this;
}
public void Dispose()
{
if (ReverbVoice != IntPtr.Zero)
{
FAudio.FAudioVoice_DestroyVoice(ReverbVoice);
ReverbVoice = IntPtr.Zero;
Marshal.FreeHGlobal(reverbSends.pSends);
}
alys
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 r690 if (MasterVoice != IntPtr.Zero)
{
FAudio.FAudioVoice_DestroyVoice(MasterVoice);
}
if (Handle != IntPtr.Zero)
{
FAudio.FAudio_Release(Handle);
}
alys
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 r0 Context = null;
}
public unsafe void AttachReverb(IntPtr voice)
{
// Only create a reverb voice if they ask for it!
if (ReverbVoice == IntPtr.Zero)
{
IntPtr reverb;
FAudio.FAudioCreateReverb(out reverb, 0);
IntPtr chainPtr;
chainPtr = Marshal.AllocHGlobal(
Marshal.SizeOf(typeof(FAudio.FAudioEffectChain))
);
FAudio.FAudioEffectChain* reverbChain = (FAudio.FAudioEffectChain*) chainPtr;
reverbChain->EffectCount = 1;
reverbChain->pEffectDescriptors = Marshal.AllocHGlobal(
Marshal.SizeOf(typeof(FAudio.FAudioEffectDescriptor))
);
FAudio.FAudioEffectDescriptor* reverbDesc =
(FAudio.FAudioEffectDescriptor*) reverbChain->pEffectDescriptors;
reverbDesc->InitialState = 1;
reverbDesc->OutputChannels = (uint) (
(DeviceDetails.OutputFormat.Format.nChannels == 6) ? 6 : 1
);
reverbDesc->pEffect = reverb;
FAudio.FAudio_CreateSubmixVoice(
Handle,
out ReverbVoice,
1, /* Reverb will be omnidirectional */
DeviceDetails.OutputFormat.Format.nSamplesPerSec,
0,
0,
IntPtr.Zero,
chainPtr
);
FAudio.FAPOBase_Release(reverb);
Marshal.FreeHGlobal(reverbChain->pEffectDescriptors);
Marshal.FreeHGlobal(chainPtr);
// Defaults based on FAUDIOFX_I3DL2_PRESET_GENERIC
IntPtr rvbParamsPtr = Marshal.AllocHGlobal(
Marshal.SizeOf(typeof(FAudio.FAudioFXReverbParameters))
);
FAudio.FAudioFXReverbParameters* rvbParams = (FAudio.FAudioFXReverbParameters*) rvbParamsPtr;
rvbParams->WetDryMix = 100.0f;
rvbParams->ReflectionsDelay = 7;
rvbParams->ReverbDelay = 11;
rvbParams->RearDelay = FAudio.FAUDIOFX_REVERB_DEFAULT_REAR_DELAY;
rvbParams->PositionLeft = FAudio.FAUDIOFX_REVERB_DEFAULT_POSITION;
rvbParams->PositionRight = FAudio.FAUDIOFX_REVERB_DEFAULT_POSITION;
rvbParams->PositionMatrixLeft = FAudio.FAUDIOFX_REVERB_DEFAULT_POSITION_MATRIX;
rvbParams->PositionMatrixRight = FAudio.FAUDIOFX_REVERB_DEFAULT_POSITION_MATRIX;
rvbParams->EarlyDiffusion = 15;
rvbParams->LateDiffusion = 15;
rvbParams->LowEQGain = 8;
rvbParams->LowEQCutoff = 4;
rvbParams->HighEQGain = 8;
rvbParams->HighEQCutoff = 6;
rvbParams->RoomFilterFreq = 5000f;
rvbParams->RoomFilterMain = -10f;
rvbParams->RoomFilterHF = -1f;
rvbParams->ReflectionsGain = -26.0200005f;
rvbParams->ReverbGain = 10.0f;
rvbParams->DecayTime = 1.49000001f;
rvbParams->Density = 100.0f;
rvbParams->RoomSize = FAudio.FAUDIOFX_REVERB_DEFAULT_ROOM_SIZE;
FAudio.FAudioVoice_SetEffectParameters(
ReverbVoice,
0,
rvbParamsPtr,
(uint) Marshal.SizeOf(typeof(FAudio.FAudioFXReverbParameters)),
0
);
Marshal.FreeHGlobal(rvbParamsPtr);
reverbSends = new FAudio.FAudioVoiceSends();
reverbSends.SendCount = 2;
reverbSends.pSends = Marshal.AllocHGlobal(
2 * Marshal.SizeOf(typeof(FAudio.FAudioSendDescriptor))
);
FAudio.FAudioSendDescriptor* sendDesc = (FAudio.FAudioSendDescriptor*) reverbSends.pSends;
sendDesc[0].Flags = 0;
sendDesc[0].pOutputVoice = MasterVoice;
sendDesc[1].Flags = 0;
sendDesc[1].pOutputVoice = ReverbVoice;
}
// Oh hey here's where we actually attach it
FAudio.FAudioVoice_SetOutputVoices(
voice,
ref reverbSends
);
}
public static void Create()
{
IntPtr ctx;
try
{
FAudio.FAudioCreate(
out ctx,
0,
FAudio.FAUDIO_DEFAULT_PROCESSOR
);
}
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 r690 catch (Exception e)
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 r0 {
/* FAudio is missing, bail! */
alys
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 r690 FNALoggerEXT.LogWarn("FAudio failed to load: " + e.ToString());
alys
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 r0 return;
}
uint devices;
FAudio.FAudio_GetDeviceCount(
ctx,
out devices
);
if (devices == 0)
{
/* No sound cards, bail! */
FAudio.FAudio_Release(ctx);
return;
}
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 r690 FAudioContext context = new FAudioContext(ctx, devices);
if (context.Handle == IntPtr.Zero)
{
/* Soundcard failed to configure, bail! */
context.Dispose();
return;
}
Context = context;
alys
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 r0 }
}
alys
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 r690 private static readonly object createLock = new object();
alys
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 r0 internal static FAudioContext Device()
{
alys
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 r690 /* Ideally the device has been made, just return it. */
alys
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 r0 if (FAudioContext.Context != null)
{
return FAudioContext.Context;
}
alys
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 r690
/* From here on out, it gets weird... */
lock (createLock)
alys
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 r0 {
alys
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 r690 /* If this trips it's because another thread
* got here first. We do the check above to
* avoid the mutex lock for the 99.99% of the
* time where it's not necessary.
*/
if (FAudioContext.Context != null)
{
return FAudioContext.Context;
}
/* If you're here, you were the first caller!
* that, or there genuinely is no hardware and
* you're about to get a lot more of these.
*/
FAudioContext.Create();
if (FAudioContext.Context == null)
{
throw new NoAudioHardwareException();
}
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 r0 }
return FAudioContext.Context;
}
#endregion
}
}