71 lines
1.3 KiB
Go
71 lines
1.3 KiB
Go
//go:build windows
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// +build windows
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package wca
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import (
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"math"
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"syscall"
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"unsafe"
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"github.com/go-ole/go-ole"
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)
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func savSetMasterVolume(sav *ISimpleAudioVolume, level float32, eventContext *ole.GUID) (err error) {
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levelValue := math.Float32bits(level)
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hr, _, _ := syscall.Syscall(
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sav.VTable().SetMasterVolume,
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3,
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uintptr(unsafe.Pointer(sav)),
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uintptr(levelValue),
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uintptr(unsafe.Pointer(eventContext)))
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if hr != 0 {
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err = ole.NewError(hr)
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}
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return
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}
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func savGetMasterVolume(sav *ISimpleAudioVolume, level *float32) (err error) {
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hr, _, _ := syscall.Syscall(
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sav.VTable().GetMasterVolume,
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2,
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uintptr(unsafe.Pointer(sav)),
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uintptr(unsafe.Pointer(level)),
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0)
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if hr != 0 {
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err = ole.NewError(hr)
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}
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return
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}
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func savSetMute(sav *ISimpleAudioVolume, mute bool, eventContext *ole.GUID) (err error) {
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var muteValue uint32
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if mute {
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muteValue = 1
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}
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hr, _, _ := syscall.Syscall(
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sav.VTable().SetMute,
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3,
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uintptr(unsafe.Pointer(sav)),
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uintptr(muteValue),
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uintptr(unsafe.Pointer(eventContext)))
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if hr != 0 {
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err = ole.NewError(hr)
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}
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return
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}
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func savGetMute(sav *ISimpleAudioVolume, mute *bool) (err error) {
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hr, _, _ := syscall.Syscall(
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sav.VTable().GetMute,
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2,
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uintptr(unsafe.Pointer(sav)),
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uintptr(unsafe.Pointer(mute)),
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0)
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if hr != 0 {
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err = ole.NewError(hr)
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}
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return
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}
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