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55 lines
1.8 KiB
Go
55 lines
1.8 KiB
Go
package bluetooth
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import (
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"fmt"
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"github.com/go-ole/go-ole"
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"github.com/saltosystems/winrt-go"
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"github.com/saltosystems/winrt-go/windows/devices/bluetooth/advertisement"
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"github.com/saltosystems/winrt-go/windows/foundation"
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)
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type Adapter struct {
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watcher *advertisement.BluetoothLEAdvertisementWatcher
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connectHandler func(device Addresser, connected bool)
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}
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// DefaultAdapter is the default adapter on the system.
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//
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// Make sure to call Enable() before using it to initialize the adapter.
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var DefaultAdapter = &Adapter{
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connectHandler: func(device Addresser, connected bool) {
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return
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},
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}
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// Enable configures the BLE stack. It must be called before any
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// Bluetooth-related calls (unless otherwise indicated).
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func (a *Adapter) Enable() error {
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return ole.RoInitialize(1) // initialize with multithreading enabled
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}
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func awaitAsyncOperation(asyncOperation *foundation.IAsyncOperation, genericParamSignature string) error {
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var status foundation.AsyncStatus
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// We need to obtain the GUID of the AsyncOperationCompletedHandler, but its a generic delegate
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// so we also need the generic parameter type's signature:
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// AsyncOperationCompletedHandler<genericParamSignature>
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iid := winrt.ParameterizedInstanceGUID(foundation.GUIDAsyncOperationCompletedHandler, genericParamSignature)
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// Wait until the async operation completes.
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waitChan := make(chan struct{})
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asyncOperation.SetCompleted(foundation.NewAsyncOperationCompletedHandler(ole.NewGUID(iid), func(instance *foundation.AsyncOperationCompletedHandler, asyncInfo *foundation.IAsyncOperation, asyncStatus foundation.AsyncStatus) {
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status = asyncStatus
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close(waitChan)
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}))
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// Wait until async operation has stopped, and finish.
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<-waitChan
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if status != foundation.AsyncStatusCompleted {
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return fmt.Errorf("async operation failed with status %d", status)
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}
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return nil
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}
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