new mojo/audio/audio.monkey2

[AdamStrangeParticipant]

Here’s a modified version of the base sound and channel class.

In essence i’ve added 256float to each sound that contains the waveform, these can be accessed through the new draw command.

I’ve also added to the sound.new allowing you to create many synth type voices from the base 4 styles.

Monkey

#rem monkeydoc Highly experimental audio module! #end Namespace mojo.audio Const AL_EXT_STEREO_ANGLES:ALenum = 1 const AL_STEREO_ANGLES:ALenum = 4144'0x1030 const WAVE_SIN:int = 0 const WAVE_TRIANGLE:int = 1 const WAVE_SQUARE:int = 2 const WAVE_SAW:int = 3 const WAVE_NOISE:int = 4 Private Function ALFormat:ALenum( format:AudioFormat ) Local alFormat:ALenum Select format Case AudioFormat.Mono8 alFormat=AL_FORMAT_MONO8 Case AudioFormat.Mono16 alFormat=AL_FORMAT_MONO16 Case AudioFormat.Stereo8 alFormat=AL_FORMAT_STEREO8 Case AudioFormat.Stereo16 alFormat=AL_FORMAT_STEREO16 End Return alFormat End Public #rem monkeydoc Global instance of the AudioDevice class. #end Const Audio := New AudioDevice #rem monkeydoc The AudioDevice class. #end Class AudioDevice '***** Internal ***** #rem monkeydoc @hidden #end Method Init() Local error:="" _alcDevice = alcOpenDevice( Null ) If _alcDevice _alcContext = alcCreateContext( _alcDevice, Null ) If _alcContext If alcMakeContextCurrent( _alcContext ) Return Else error = "Failed to make OpenAL current" Endif Else error = "Failed to create OpenAL context" Endif Else error = "Failed to create OpenAL device" Endif End Private Field _alcDevice:ALCdevice Ptr Field _alcContext:ALCcontext Ptr Field _error:String End #rem monkeydoc The Sound class. #end Class Sound Extends Resource field _data:float[] = New float[256] #rem monkeydoc Creates a new sound. #end Method New( data:AudioData ) alGenBuffers( 1, Varptr _alBuffer ) alBufferData( _alBuffer, ALFormat( data.Format ), data.Data, data.Size, data.Hertz ) _format = data.Format _length = data.Length _hertz = data.Hertz ' alIsExtensionPresent( AL_EXT_STEREO_ANGLES ) 'jlAdded #- Select data.Format Case AudioFormat.Mono8 _stereo = False _bits8 = True Case AudioFormat.Mono16 _stereo = False _bits8 = False Case AudioFormat.Stereo8 _stereo = True _bits8 = True Case AudioFormat.Stereo16 _stereo = True _bits8 = False End Select If _stereo Then Local diff:float = float(data.Length - 1) / 128 Local k:int Local pos:int For k = 0 To 127 pos = (k * diff) _data[k*2] = GetSample( data, pos ) next For k = 0 To 127 pos = (k * diff) _data[1+k*2] = GetSample( data, pos, 1 ) next Else Local diff:float = float(data.Length - 1) / 256 Local k:int Local pos:int For k = 0 To 255 pos = (k * diff) _data[k] = GetSample( data, pos ) Next End If #- End Method New( wave:int = 4, footage:int = 2, offset:int = 64, inDiff:int = 0, smooth:int = 0, rough:int = 0 ) const Pi2:float = Pi * 2 wave = Clamp( wave, 0, 4 ) Local length:int Select footage Case 0 length = 2048 Case 1 length = 1024 Case 2 length = 512 Case 3 length = 256 Case 4 length = 128 End Select Local sine:UByte[] = New UByte[length] local sinData:AudioData = New AudioData( length, AudioFormat.Mono8, 44100, Cast<UByte Ptr>( sine.Data ) ) Select wave Case 4 'noise _file = "Noise" For Local i := 0 Until length sine[i] = Rnd(255) Next Case 1 'tri _file = "Triangle" Local x1:int = length * .25 Local x2:int = length * .5 Local x3:int = length *.75 Local div:float = float(255) / float(length) For Local i := 0 Until length If i < x1 Then sine[i] = 127 + (i * 2)*div Else If i < x3 Then sine[i] = 255 - ( (i-x1) * 2 ) * div Else sine[i] = ( (i-x3) * 2 ) * div End If Next Case 3 'saw _file = "Saw" Local div:float = float(255) / float(length) For Local i := 0 Until length sine[i] = i * div Next Case 2 'square _file = "Square" Local x2:int = length * .5 For Local i := 0 Until length If i < x2 Then sine[i] = 255 Else sine[i] = 0 End If Next Case 0 'sin _file = "Sin" For Local i := 0 Until length sine[i] = Sin( Float(i)/length * Pi2 ) * 127.5 + 127.5 Next End select If smooth > 0 Then Local sm:int Local i:int For sm = 1 To (smooth / 2)+1 sine[length-1] = float(sine[length-1] + sine[0]) * .5 For Local i := 1 Until length sine[i-1] = float(sine[i-1] + sine[i]) * .5 Next For Local i := length-2 to 0 Step -1 sine[i+1] = float(sine[i+1] + sine[i]) * .5 Next sine[length-1] = float(sine[length-1] + sine[0]) * .5 Next End If If inDiff > 0 and offset > 0 Then Local diff:int = inDiff For Local i := 0 Until length If i Mod offset = 0 Then diff -= inDiff sine[i] = sine[i] - diff Next End If If rough > 0 Then rough += rough For Local i := 0 Until length Step 2 sine[i] = Clamp( float(sine[i] + Rnd(-rough, rough)), 0.0, 255.0) Next End if If smooth > 0 Then Local sm:int Local i:int For sm = 1 To (smooth / 2)+1 sine[length-1] = float(sine[length-1] + sine[0]) * .5 For Local i := 1 Until length sine[i-1] = float(sine[i-1] + sine[i]) * .5 Next For Local i := length-2 to 0 Step -1 sine[i+1] = float(sine[i+1] + sine[i]) * .5 Next sine[length-1] = float(sine[length-1] + sine[0]) * .5 Next End If alGenBuffers( 1, Varptr _alBuffer ) alBufferData( _alBuffer, ALFormat( sinData.Format ), sinData.Data, sinData.Size, sinData.Hertz ) _format = sinData.Format _length = sinData.Length _hertz = sinData.Hertz _stereo = False _bits8 = True Local diff:float = float(length - 1) / 255 Local k:int Local pos:int For k = 0 To 255 pos = k * diff ' Print "pos="+k+" linked to "+pos+" length "+length+" data "+GetSample( sinData, pos ) _data[k] = GetSampleMono8( sinData, pos ) Next sinData.Discard() End method Method GetSampleMono8:Float( data:AudioData, index:Int ) Return data.Data[index]/128.0-1 End Method GetSample:Float( data:AudioData, index:Int, channel:int = 0 ) Select data.Format Case AudioFormat.Mono8 Return data.Data[index]/128.0-1 Case AudioFormat.Stereo8 Return data.Data[index*2 + (channel&1)]/128.0-1 Case AudioFormat.Mono16 Return Cast<Short Ptr>( data.Data )[index]/32767.0 Case AudioFormat.Stereo16 Return Cast<Short Ptr>( data.Data )[index*2 + (channel&1)]/32767.0 End Select Return 0 End method Draw( canvas:Canvas, x:float, y:int, width:float, height:int, showText:bool = true ) Local halfHeight:float = height * .5 If showText Then canvas.Color = Color.LightGrey canvas.DrawText( _file, x, y+height-16 ) End if Local last:float = y+halfHeight Local curr:float Local xp:float = float(width) / 255 Local k:int If _stereo Then Local quarterHeight:float = height * .25 last = y+quarterHeight Local height2:float = height - quarterHeight Local last2:float = y+height2 canvas.Color = Color.DarkGrey canvas.DrawLine( x, y+halfHeight, x+width, y+halfHeight ) canvas.Color = Color.White*0.6 canvas.DrawLine( x, y+quarterHeight, x+width, y+quarterHeight ) canvas.DrawLine( x, y+height2, x+width, y+height2 ) If showText Then canvas.Color = Color.Grey canvas.DrawText( "Left", x, y ) canvas.DrawText( "Right", x, y+halfHeight ) End if canvas.Color = Color.Green Local wd:float = width / 256 Local x1:float = x+1 For k = 1 To 255 If k Mod 2 = 0 Then curr = y+quarterHeight - ( _data[k] * quarterHeight ) canvas.DrawLine( x, last, x1, curr ) last = curr Else curr = y+height2 - ( _data[k] * quarterHeight ) canvas.DrawLine( x, last2, x1, curr ) last2 = curr End If x = x1 x1 += wd Next Else canvas.Color = Color.White*0.6 canvas.DrawLine( x, y+halfHeight, x+width, y+halfHeight ) canvas.Color = Color.Green Local wd:float = width / 256 Local x1:float = x+1 For k = 1 To 255 curr = y+halfHeight - ( _data[k] * halfHeight ) canvas.DrawLine( x, last, x1, curr ) last = curr x = x1 x1 += wd Next canvas.DrawLine( x, last, x1, y+halfHeight ) End If End method #- 'jl added #rem monkeydoc Returns true if a loaded or created sound sample is stereo #end Property Stereo:bool() Return _stereo Setter( stereo:bool ) _stereo = stereo End #rem monkeydoc Returns true if a loaded or created sound sample is 8bits #end Property Bits8:bool() Return _bits8 Setter( bits8:bool ) _bits8 = bits8 End #- #rem monkeydoc The length, in samples, of the sound. #end Property Length:Int() Return _length End #rem monkeydoc The format of the sound. #end Property Format:AudioFormat() Return _format End #rem monkeydoc The playback rate of the sound. #end Property Hertz:Int() Return _hertz End #rem monkeydoc The duration, in seconds, of the sound. #end Property Duration:Double() Return Double( _length ) / Double( _hertz ) End Property Filename:String() Return _file End #rem monkeydoc Plays a sound through a temporary channel. The returned channel will be automatically discarded when it finishes playing or is stopped with [[Channel.Stop]]. #end Method Play:Channel( loop:Bool = False ) Local channel := New Channel( ChannelFlags.AutoDiscard ) channel.Play( Self, loop ) Return channel End #rem monkeydoc Loads a sound. #end Function Load:Sound( path:String ) Local data := AudioData.Load( path ) If Not data Return Null Local sound := New Sound( data ) sound._file = StripDir( path ) data.Discard() Return sound End Protected #rem monkeydoc @hidden #end Method OnDiscard() Override If _alBuffer alDeleteBuffers( 1, Varptr _alBuffer ) _alBuffer = 0 End #rem monkeydoc @hidden #end Method OnFinalize() Override If _alBuffer alDeleteBuffers( 1, Varptr _alBuffer ) End Private field _file:string = "" Field _alBuffer:ALuint Field _format:AudioFormat Field _length:Int Field _hertz:Int 'jl added field _stereo:bool = False field _bits8:bool = false End #rem monkeydoc ChannelFlags enum. | Flag | Description |:--------------|:----------- | [crayon-5cba16daeb862720557726 inline="true" ]AutoDiscard

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#rem monkeydoc Highly experimental audio module! #end Namespace mojo.audio     Const AL_EXT_STEREO_ANGLES:ALenum = 1 const AL_STEREO_ANGLES:ALenum = 4144'0x1030   const WAVE_SIN:int = 0 const WAVE_TRIANGLE:int = 1 const WAVE_SQUARE:int = 2 const WAVE_SAW:int = 3 const WAVE_NOISE:int = 4   Private   Function ALFormat:ALenum( format:AudioFormat ) Local alFormat:ALenum Select format Case AudioFormat.Mono8 alFormat=AL_FORMAT_MONO8 Case AudioFormat.Mono16 alFormat=AL_FORMAT_MONO16 Case AudioFormat.Stereo8 alFormat=AL_FORMAT_STEREO8 Case AudioFormat.Stereo16 alFormat=AL_FORMAT_STEREO16 End Return alFormat End   Public   #rem monkeydoc Global instance of the AudioDevice class. #end Const Audio := New AudioDevice       #rem monkeydoc The AudioDevice class. #end Class AudioDevice   '***** Internal ***** #rem monkeydoc @hidden #end Method Init() Local error:=""   _alcDevice = alcOpenDevice( Null ) If _alcDevice _alcContext = alcCreateContext( _alcDevice, Null ) If _alcContext If alcMakeContextCurrent( _alcContext ) Return Else error = "Failed to make OpenAL current" Endif Else error = "Failed to create OpenAL context" Endif Else error = "Failed to create OpenAL device" Endif   End Private Field _alcDevice:ALCdevice Ptr Field _alcContext:ALCcontext Ptr Field _error:String End     #rem monkeydoc The Sound class. #end Class Sound Extends Resource field _data:float[] = New float[256]   #rem monkeydoc Creates a new sound. #end Method New( data:AudioData ) alGenBuffers( 1, Varptr _alBuffer ) alBufferData( _alBuffer, ALFormat( data.Format ), data.Data, data.Size, data.Hertz ) _format = data.Format _length = data.Length _hertz = data.Hertz   ' alIsExtensionPresent( AL_EXT_STEREO_ANGLES )   'jlAdded #- Select data.Format Case AudioFormat.Mono8 _stereo = False _bits8 = True Case AudioFormat.Mono16 _stereo = False _bits8 = False Case AudioFormat.Stereo8 _stereo = True _bits8 = True Case AudioFormat.Stereo16 _stereo = True _bits8 = False End Select   If _stereo Then Local diff:float = float(data.Length - 1) / 128 Local k:int Local pos:int For k = 0 To 127 pos = (k * diff) _data[k*2] = GetSample( data, pos ) next For k = 0 To 127 pos = (k * diff) _data[1+k*2] = GetSample( data, pos, 1 ) next Else Local diff:float = float(data.Length - 1) / 256 Local k:int Local pos:int For k = 0 To 255 pos = (k * diff) _data[k] = GetSample( data, pos ) Next End If #- End     Method New( wave:int = 4, footage:int = 2, offset:int = 64, inDiff:int = 0, smooth:int = 0, rough:int = 0 ) const Pi2:float = Pi * 2 wave = Clamp( wave, 0, 4 )   Local length:int Select footage Case 0 length = 2048 Case 1 length = 1024 Case 2 length = 512 Case 3 length = 256 Case 4 length = 128 End Select Local sine:UByte[] = New UByte[length] local sinData:AudioData = New AudioData( length, AudioFormat.Mono8, 44100, Cast<UByte Ptr>( sine.Data ) )   Select wave Case 4 'noise _file = "Noise" For Local i := 0 Until length sine[i] = Rnd(255) Next   Case 1 'tri _file = "Triangle" Local x1:int = length * .25 Local x2:int = length * .5 Local x3:int = length *.75 Local div:float = float(255) / float(length) For Local i := 0 Until length If i < x1 Then sine[i] = 127 + (i * 2)*div Else If i < x3 Then sine[i] = 255 - ( (i-x1) * 2 ) * div Else sine[i] = ( (i-x3) * 2 ) * div End If Next   Case 3 'saw _file = "Saw" Local div:float = float(255) / float(length) For Local i := 0 Until length sine[i] = i * div Next   Case 2 'square _file = "Square" Local x2:int = length * .5 For Local i := 0 Until length If i < x2 Then sine[i] = 255 Else sine[i] = 0 End If Next Case 0 'sin _file = "Sin" For Local i := 0 Until length sine[i] = Sin( Float(i)/length * Pi2 ) * 127.5 + 127.5 Next End select   If smooth > 0 Then Local sm:int Local i:int For sm = 1 To (smooth / 2)+1 sine[length-1] = float(sine[length-1] + sine[0]) * .5 For Local i := 1 Until length sine[i-1] = float(sine[i-1] + sine[i]) * .5 Next For Local i := length-2 to 0 Step -1 sine[i+1] = float(sine[i+1] + sine[i]) * .5 Next sine[length-1] = float(sine[length-1] + sine[0]) * .5 Next End If   If inDiff > 0 and offset > 0 Then Local diff:int = inDiff For Local i := 0 Until length If i Mod offset = 0 Then diff -= inDiff sine[i] = sine[i] - diff Next End If   If rough > 0 Then rough += rough For Local i := 0 Until length Step 2 sine[i] = Clamp( float(sine[i] + Rnd(-rough, rough)), 0.0, 255.0) Next End if   If smooth > 0 Then Local sm:int Local i:int For sm = 1 To (smooth / 2)+1 sine[length-1] = float(sine[length-1] + sine[0]) * .5 For Local i := 1 Until length sine[i-1] = float(sine[i-1] + sine[i]) * .5 Next For Local i := length-2 to 0 Step -1 sine[i+1] = float(sine[i+1] + sine[i]) * .5 Next sine[length-1] = float(sine[length-1] + sine[0]) * .5 Next End If alGenBuffers( 1, Varptr _alBuffer ) alBufferData( _alBuffer, ALFormat( sinData.Format ), sinData.Data, sinData.Size, sinData.Hertz ) _format = sinData.Format _length = sinData.Length _hertz = sinData.Hertz   _stereo = False _bits8 = True   Local diff:float = float(length - 1) / 255 Local k:int Local pos:int For k = 0 To 255 pos = k * diff ' Print "pos="+k+" linked to "+pos+" length "+length+" data "+GetSample( sinData, pos ) _data[k] = GetSampleMono8( sinData, pos ) Next   sinData.Discard() End method     Method GetSampleMono8:Float( data:AudioData, index:Int ) Return data.Data[index]/128.0-1 End   Method GetSample:Float( data:AudioData, index:Int, channel:int = 0 ) Select data.Format Case AudioFormat.Mono8 Return data.Data[index]/128.0-1 Case AudioFormat.Stereo8 Return data.Data[index*2 + (channel&1)]/128.0-1 Case AudioFormat.Mono16 Return Cast<Short Ptr>( data.Data )[index]/32767.0 Case AudioFormat.Stereo16 Return Cast<Short Ptr>( data.Data )[index*2 + (channel&1)]/32767.0 End Select Return 0 End     method Draw( canvas:Canvas, x:float, y:int, width:float, height:int, showText:bool = true ) Local halfHeight:float = height * .5   If showText Then canvas.Color = Color.LightGrey canvas.DrawText( _file, x, y+height-16 ) End if   Local last:float = y+halfHeight Local curr:float Local xp:float = float(width) / 255 Local k:int If _stereo Then   Local quarterHeight:float = height * .25 last = y+quarterHeight Local height2:float = height - quarterHeight Local last2:float = y+height2   canvas.Color = Color.DarkGrey canvas.DrawLine( x, y+halfHeight, x+width, y+halfHeight )   canvas.Color = Color.White*0.6 canvas.DrawLine( x, y+quarterHeight, x+width, y+quarterHeight ) canvas.DrawLine( x, y+height2, x+width, y+height2 )   If showText Then canvas.Color = Color.Grey canvas.DrawText( "Left", x, y ) canvas.DrawText( "Right", x, y+halfHeight ) End if   canvas.Color = Color.Green   Local wd:float = width / 256 Local x1:float = x+1 For k = 1 To 255 If k Mod 2 =  0 Then curr = y+quarterHeight - ( _data[k] * quarterHeight ) canvas.DrawLine( x, last, x1, curr ) last = curr Else curr = y+height2 - ( _data[k] * quarterHeight ) canvas.DrawLine( x, last2, x1, curr ) last2 = curr End If x = x1 x1 += wd Next Else canvas.Color = Color.White*0.6 canvas.DrawLine( x, y+halfHeight, x+width, y+halfHeight )   canvas.Color = Color.Green   Local wd:float = width / 256 Local x1:float = x+1 For k = 1 To 255 curr = y+halfHeight - ( _data[k] * halfHeight ) canvas.DrawLine( x, last, x1, curr ) last = curr x = x1 x1 += wd Next canvas.DrawLine( x, last, x1, y+halfHeight ) End If End method #- 'jl added   #rem monkeydoc Returns true if a loaded or created sound sample is stereo #end Property Stereo:bool() Return _stereo Setter( stereo:bool ) _stereo = stereo End   #rem monkeydoc Returns true if a loaded or created sound sample is 8bits #end Property Bits8:bool() Return _bits8 Setter( bits8:bool ) _bits8 = bits8 End #-   #rem monkeydoc The length, in samples, of the sound. #end Property Length:Int() Return _length End #rem monkeydoc The format of the sound. #end Property Format:AudioFormat() Return _format End #rem monkeydoc The playback rate of the sound. #end Property Hertz:Int() Return _hertz End #rem monkeydoc The duration, in seconds, of the sound. #end Property Duration:Double() Return Double( _length ) / Double( _hertz ) End     Property Filename:String() Return _file End #rem monkeydoc Plays a sound through a temporary channel. The returned channel will be automatically discarded when it finishes playing or is stopped with [[Channel.Stop]]. #end Method Play:Channel( loop:Bool = False ) Local channel := New Channel( ChannelFlags.AutoDiscard ) channel.Play( Self, loop ) Return channel End   #rem monkeydoc Loads a sound. #end Function Load:Sound( path:String ) Local data := AudioData.Load( path ) If Not data Return Null Local sound := New Sound( data ) sound._file = StripDir( path )   data.Discard() Return sound End Protected #rem monkeydoc @hidden #end Method OnDiscard() Override If _alBuffer alDeleteBuffers( 1, Varptr _alBuffer ) _alBuffer = 0 End   #rem monkeydoc @hidden #end Method OnFinalize() Override If _alBuffer alDeleteBuffers( 1, Varptr _alBuffer ) End Private field _file:string = "" Field _alBuffer:ALuint Field _format:AudioFormat Field _length:Int Field _hertz:Int   'jl added field _stereo:bool = False field _bits8:bool = false   End         #rem monkeydoc ChannelFlags enum.   | Flag | Description |:--------------|:----------- | [crayon-5cba16daeb862720557726 inline="true" ]AutoDiscard

| Channel will be automatically discarded when it finishes playing, or when it is stopped using [[Channel.Stop]]. #end Enum ChannelFlags AutoDiscard = 1 End Class Channel Extends Resource #rem monkeydoc Creates a new audio channel. If flags is ChannelFlags.AutoDiscard, then the channel will be automatically discarded when it finishes playing, or when it is stopped using [[Stop]]. #end Method New( flags:ChannelFlags = Null ) _flags = flags FlushAutoDiscard() alGenSources( 1, Varptr _alSource ) If _flags & ChannelFlags.AutoDiscard then _autoDiscard.Push( Self ) End Property Flags:ChannelFlags() Return _flags End #- 'jl added #rem monkeydoc True if channel is playing a stereo audio file. #end Property Stereo:bool() Return _stereo Setter( stereo:bool ) _stereo = stereo End #- #rem monkeydoc True if channel is playing audio. If the channel is playing audio but is in the paused state, this property will still return true. #end Property Playing:Bool() If Not _alSource Return False Local state := ALState() Return state = AL_PLAYING Or state = AL_PAUSED End #rem monkeydoc True if channel is paused. #end Property Paused:Bool() If Not _alSource Return False Return ALState() = AL_PAUSED Setter( paused:Bool ) If Not Playing Return If paused alSourcePause( _alSource ) Else alSourcePlay( _alSource ) Endif End #rem monkeydoc Channel volume in the range 0 to 1. #end Property Volume:Float() If Not _alSource Return 0 Return _volume Setter( volume:Float ) If Not _alSource Return _volume = Clamp( volume, 0.0, 1.0 ) alSourcef( _alSource, AL_GAIN, _volume ) End #rem monkeydoc Channel playback rate. #end Property Rate:Float() If Not _alSource Return 0 Return _rate Setter( rate:Float ) If Not _alSource Return _rate = rate alSourcef( _alSource, AL_PITCH, _rate ) End #rem monkeydoc Channel pan in the range -1 (left) to 1 (right). #end Property Pan:Float() If Not _alSource Return 0 Return _pan Setter( pan:Float) If Not _alSource Return _pan = Clamp( pan, -1.0, 1.0 )*1.5 If Not _stereo Then Local x := Sin( _pan ) Local z := -Cos( _pan ) alSource3f( _alSource, AL_POSITION, x, 0, z ) else ' Print "stereo "+_pan ' Local angles:ALfloat[] = New ALfloat[2] ' angles[0] = Pi/6.0 - _pan ' angles[1] = -Pi/6.0 - _pan ' ALfloat angles[2] = { (ALfloat)(M_PI/6.0 - angle), (ALfloat)(-M_PI/6.0 - angle) } ' alSourcefv( _alSource, AL_STEREO_ANGLES, Varptr angles[0] ) End If End #- 'JL added #rem monkeydoc Channel playhead in samples. If the channel is playing audio this will return the position of the playhead in the played sound. #end Property Playhead:Double() If Not _alSource Return 0 ' Local proc:ALint ' alGetSourcei( _alSource,AL_BUFFERS_PROCESSED,Varptr proc ) ' Print "processed: "+proc Local playhead:ALfloat alGetSourcef( _alSource, AL_SAMPLE_OFFSET, Varptr playhead ) Return (float(playhead) / _length) ' local pos:float ' return alGetSourcef( _alSource, AL_SAMPLE_OFFSET, Varptr pos ) Setter( playhead:Float ) If Not _alSource Return local _playhead:ALfloat = Clamp( playhead, 0.0, 1.0 ) alSourcef( _alSource, AL_SAMPLE_OFFSET, _playhead ) End #- #rem monkeydoc Channel playhead sample offset. Gets or sets the sample offset of the sound currently playing. If the channel is playing when set, playback is immediately affected. If the channel is not playing when set, the offset will be applied when the Play method is invoked. #end Property PlayheadSample:Int() If Not _alSource Return 0 Local sample:Int alGetSourcei( _alSource, AL_SAMPLE_OFFSET, Varptr sample ) Return sample Setter( sample:Int ) If Not _alSource Return alSourcei( _alSource, AL_SAMPLE_OFFSET, sample ) End #rem monkeydoc Channel playhead time offset. Gets or sets the time offset of the sound currently playing. If the channel is playing when set, playback is immediately affected. If the channel is not playing when set, the offset will be applied when the Play method is invoked. #end Property PlayheadTime:Float() If Not _alSource Return 0 Local time:Float alGetSourcef( _alSource, AL_SEC_OFFSET, Varptr time ) Return time Setter( time:Float ) If Not _alSource Return alSourcef( _alSource, AL_SEC_OFFSET, time ) End #rem monkeydoc Plays a sound through the channel. #end Method Play( sound:Sound, loop:Bool = False ) If Not _alSource Or Not sound Or Not sound._alBuffer Return alSourcei( _alSource, AL_LOOPING,loop ? AL_TRUE Else AL_FALSE ) alSourcei( _alSource, AL_BUFFER, sound._alBuffer ) #- 'jl added _stereo = sound.Stereo _length = sound.Length #- alSourcePlay( _alSource ) End #if __TARGET__<>"emscripten" #rem monkeydoc @hidden - Highly experimental!!!!! #end Method WaitQueued( queued:Int ) While _queued>queued FlushProcessed() If _queued <= queued Return _waiting = True _future.Get() Wend End #rem monkeydoc @hidden - Highly experimental!!!!! #end Method Queue( data:AudioData ) Local buf:ALuint If Not _tmpBuffers _tmpBuffers = New Stack<ALuint> _freeBuffers = New Stack<ALuint> _future = New Future<Int> _waiting = False _queued = 0 _timer = New Timer( 60, Lambda() FlushProcessed() End ) Endif If _freeBuffers.Empty alGenBuffers( 1, Varptr buf ) _tmpBuffers.Push( buf ) Else buf = _freeBuffers.Pop() Endif alBufferData( buf, ALFormat( data.Format ), data.Data, data.Size, data.Hertz ) alSourceQueueBuffers( _alSource, 1, Varptr buf ) _queued += 1 Local state := ALState() If state = AL_INITIAL Or state = AL_STOPPED then alSourcePlay( _alSource ) End #endif #rem monkeydoc Stops channel. #end Method Stop() If Not _alSource Return alSourceStop( _alSource ) If _flags & ChannelFlags.AutoDiscard then Discard() End Protected #rem monkeydoc @hidden #end Method OnDiscard() Override If _alSource alDeleteSources( 1,Varptr _alSource ) _alSource=0 End #rem monkeydoc @hidden #end Method OnFinalize() Override If _alSource alDeleteSources( 1,Varptr _alSource ) End Private Field _flags:ChannelFlags Field _alSource:ALuint Field _volume:Float = 1 Field _rate:Float = 1 Field _pan:Float = 0 #- 'jladded field _stereo:bool = false field _length:int = 0 #- Global _autoDiscard := New Stack<Channel> Method ALState:ALenum() Local state:ALenum alGetSourcei( _alSource, AL_SOURCE_STATE, Varptr state ) Return state End Function FlushAutoDiscard() Local put := 0 For Local chan := Eachin _autoDiscard If Not chan._alSource then Continue If chan.ALState() <> AL_STOPPED then _autoDiscard[ put ] = chan put += 1 Continue Endif chan.Discard() Next _autoDiscard.Resize( put ) End #if __TARGET__<>"emscripten" Field _tmpBuffers:Stack<ALuint> Field _freeBuffers:Stack<ALuint> Field _future:Future<Int> Field _waiting:Bool Field _queued:Int Field _timer:Timer Method FlushProcessed:Int() Local proc:ALint alGetSourcei( _alSource, AL_BUFFERS_PROCESSED, Varptr proc ) If Not proc Return 0 For Local i := 0 Until proc Local buf:ALuint alSourceUnqueueBuffers( _alSource, 1, Varptr buf ) _queued -= 1 If _tmpBuffers.Contains( buf ) _freeBuffers.Push( buf ) Next If _waiting _waiting = False _future.Set( proc ) Endif Return proc End #endif End [/crayon]

Here’s a quick shot of the draw command in operation with 3 different sound shown at different sizes. the bg color is drawn separately – hence the color change.

You can see that both mono and stereo, 8 and 16 bit are correctly displayed along with the base filename (also a new addition)

I’m sure someone might find it useful :0

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   Screen-Shot-2017-08-31-at-11.40.31.png
   

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