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Create Example_Sine.pb
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137
samples/PureBasic/Example_Sine.pb
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137
samples/PureBasic/Example_Sine.pb
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EnableExplicit
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; ##################################################### Includes ####################################################
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XIncludeFile "Includes/AudioOut.pbi"
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; ##################################################### Prototypes ##################################################
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; ##################################################### Structures ##################################################
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; ##################################################### Constants ###################################################
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#Samplerate = 44100
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; ##################################################### Structures ##################################################
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Structure Main
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*AudioOut
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Quit.i
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EndStructure
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Global Main.Main
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Structure Main_Window
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ID.i
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TrackBar.i [10]
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EndStructure
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Global Main_Window.Main_Window
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; ##################################################### Variables ###################################################
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Global Frequency.d = 1000
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Global Amplitude.d = 0.25
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; ##################################################### Procedures ##################################################
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Procedure Main_Window_Open()
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Main_Window\ID = OpenWindow(#PB_Any, 0, 0, 800, 100, "AudioOut Example", #PB_Window_SystemMenu | #PB_Window_MinimizeGadget | #PB_Window_ScreenCentered)
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If Main_Window\ID
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Main_Window\TrackBar[0] = TrackBarGadget(#PB_Any, 10, 10, 780, 30, 0, 20000)
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SetGadgetState(Main_Window\TrackBar[0], Frequency)
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Main_Window\TrackBar[1] = TrackBarGadget(#PB_Any, 10, 40, 780, 30, 0, 1000)
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SetGadgetState(Main_Window\TrackBar[1], Amplitude*1000)
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EndIf
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EndProcedure
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Procedure Notifier_CallBack(*AudioOut)
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Protected *Temp, Temp_Size.i
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Static Rotation.d
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While AudioOut::GetQueuedBlocks(*AudioOut) <= 3
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Temp_Size = AudioOut::GetBufferBlocksize(*AudioOut)
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If Temp_Size > 0
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*Temp = AllocateMemory(Temp_Size)
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Define Left.d, Right.d, i
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For i = 0 To Temp_Size / 4 - 1
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Left = Sin(Rotation) * Amplitude
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Right = Sin(Rotation) * Amplitude
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PokeW(*Temp + i*4 , Left*32767)
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PokeW(*Temp + i*4 + 2, Right*32767)
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Rotation + 2.0*#PI / #Samplerate * Frequency
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Next
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AudioOut::Write_Data(Main\AudioOut, *Temp, Temp_Size)
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FreeMemory(*Temp)
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EndIf
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Wend
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EndProcedure
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; ##################################################### Initialisation ##############################################
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Main_Window_Open()
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AudioOut::GetDevices()
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ForEach AudioOut::Device()
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Debug PeekS(AudioOut::@Device()\szPname)
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Next
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Main\AudioOut = AudioOut::Initialize(#WAVE_MAPPER, #Samplerate, 2, 16, @Notifier_CallBack())
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If Not Main\AudioOut
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Debug AudioOut::GetError()
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End
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EndIf
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Notifier_CallBack(Main\AudioOut)
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; ##################################################### Main ########################################################
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Repeat
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Repeat
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Select WaitWindowEvent(100)
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Case #PB_Event_Gadget
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Select EventGadget()
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Case Main_Window\TrackBar[0]
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Frequency = GetGadgetState(Main_Window\TrackBar[0])
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Debug Frequency
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Case Main_Window\TrackBar[1]
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Amplitude = GetGadgetState(Main_Window\TrackBar[1]) / 1000
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EndSelect
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Case #PB_Event_CloseWindow
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Main\Quit = #True
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Case 0
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Break
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EndSelect
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ForEver
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Until Main\Quit
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; ##################################################### End #########################################################
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AudioOut::Deinitialize(Main\AudioOut)
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; IDE Options = PureBasic 5.30 Beta 2 (Windows - x64)
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; CursorPosition = 109
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; FirstLine = 79
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; Folding = -
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; EnableUnicode
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; EnableThread
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; EnableXP
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