93 lines
3.4 KiB
QBasic
93 lines
3.4 KiB
QBasic
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Attribute VB_Name = "modLiveFX"
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'///////////////////////////////////////////////////////////////////////////////
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' modLiveFX.bas - Copyright (c) 2002-2007 (: JOBnik! :) [Arthur Aminov, ISRAEL]
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' [http://www.jobnik.org]
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' [ jobnik@jobnik.org ]
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'
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' Other source: frmLiveFX.frm
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'
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' BASS full-duplex recording test with effects
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' Originally translated from - livefx.c - Example of Ian Luck
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'///////////////////////////////////////////////////////////////////////////////
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Option Explicit
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Declare Sub FillMemory Lib "kernel32.dll" Alias "RtlFillMemory" (Destination As Any, ByVal length As Long, ByVal Fill As Byte)
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Declare Sub Sleep Lib "kernel32.dll" (ByVal dwMilliseconds As Long)
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Public rchan As Long ' recording channel
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Public chan As Long ' playback stream
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Public fx(4) As Long ' FX handles
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Public chunk As Long ' recording chunk size
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Public input_ As Long ' current input source
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Public latency As Long ' current latency
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' Display error message
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Public Sub Error_(ByVal es As String)
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Call MsgBox(es & vbCrLf & vbCrLf & "error code: " & BASS_ErrorGetCode, vbExclamation, "Error")
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End Sub
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Public Function RecordingCallback(ByVal handle As Long, ByVal buffer As Long, ByVal length As Long, ByVal user As Long) As Long
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Call BASS_StreamPutData(chan, ByVal buffer, length) ' feed recorded data to output stream
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RecordingCallback = BASSTRUE ' continue recording
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End Function
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Static Function Initialize() As Boolean
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Dim bi As BASS_INFO
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' initialize output, get latency
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If (BASS_Init(-1, 44100, BASS_DEVICE_LATENCY, frmLiveFX.hWnd, 0) = 0) Then
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Call Error_("Can't initialize output")
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Initialize = False
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Exit Function
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End If
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Call BASS_GetInfo(bi)
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If (bi.dsver < 8) Then ' no DX8, so disable effect buttons
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With frmLiveFX
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.chkChorus.Enabled = False
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.chkFlanger.Enabled = False
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.chkGargle.Enabled = False
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.chkReverb.Enabled = False
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End With
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End If
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' create a stream to play the recording
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chan = BASS_StreamCreate(44100, 2, 0, STREAMPROC_PUSH, 0)
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' start recording with 10ms period
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Dim rinit As Long
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rinit = BASS_RecordInit(-1)
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rchan = BASS_RecordStart(44100, 2, MakeLong(0, 10), AddressOf RecordingCallback, 0)
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If (rinit = 0 Or rchan = 0) Then
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Call BASS_RecordFree
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Call BASS_Free
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Call Error_("Can't initialize recording")
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Initialize = False
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Exit Function
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End If
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' get list of inputs
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Dim c As Integer
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Dim level As Single
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While BASS_RecordGetInputName(c) <> 0
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frmLiveFX.cmbSelChange.AddItem VBStrFromAnsiPtr(BASS_RecordGetInputName(c))
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If (BASS_RecordGetInput(c, level) And BASS_INPUT_OFF) = 0 Then
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frmLiveFX.cmbSelChange.ListIndex = c ' this 1 is currently "on"
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input_ = c
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frmLiveFX.sLevel.SelStart = level * 100 ' set level slider
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End If
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c = c + 1
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Wend
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' prebuffer at least "minbuf" amount of data before starting playback
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Dim prebuf As Long
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prebuf = BASS_ChannelSeconds2Bytes(chan, CSng(bi.minbuf) / 1000)
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While BASS_ChannelGetData(chan, 0, BASS_DATA_AVAILABLE) < prebuf
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Call Sleep(1)
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Wend
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Call BASS_ChannelPlay(chan, BASSFALSE)
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Initialize = True
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End Function
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