105 lines
1.9 KiB
Go
105 lines
1.9 KiB
Go
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package edgetpu
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// +build !windows
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/*
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#ifndef GO_EDGETPU_H
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#include "edgetpu.go.h"
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#include <edgetpu_c.h>
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#endif
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#cgo LDFLAGS: -ledgetpu
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*/
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import "C"
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import (
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"fmt"
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"unsafe"
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"github.com/mattn/go-tflite/delegates"
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)
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const (
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// The Device Types
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TypeApexPCI DeviceType = C.EDGETPU_APEX_PCI
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TypeApexUSB DeviceType = C.EDGETPU_APEX_USB
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)
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type DeviceType uint32
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type Device struct {
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Type DeviceType
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Path string
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}
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// There are no options
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type DelegateOptions struct {
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}
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// Delegate is the tflite delegate
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type Delegate struct {
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d *C.TfLiteDelegate
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}
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func New(device Device) delegates.Delegater {
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var d *C.TfLiteDelegate
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d = C.edgetpu_create_delegate(uint32(device.Type), C.CString(device.Path), nil, 0)
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if d == nil {
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return nil
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}
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return &Delegate{
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d: d,
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}
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}
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// Delete the delegate
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func (d *Delegate) Delete() {
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C.edgetpu_free_delegate(d.d)
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}
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// Return a pointer
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func (d *Delegate) Ptr() unsafe.Pointer {
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return unsafe.Pointer(d.d)
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}
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// Version fetches the EdgeTPU runtime version information
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func Version() (string, error) {
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version := C.edgetpu_version()
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if version == nil {
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return "", fmt.Errorf("could not get version")
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}
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return C.GoString(version), nil
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}
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// Verbosity sets the edgetpu verbosity
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func Verbosity(v int) {
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C.edgetpu_verbosity(C.int(v))
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}
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// DeviceList fetches a list of devices
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func DeviceList() ([]Device, error) {
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// Fetch the list of devices
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var numDevices C.size_t
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cDevices := C.edgetpu_list_devices(&numDevices)
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if cDevices == nil {
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return nil, nil
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}
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// Cast the result to a Go slice
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deviceSlice := (*[1024]C.struct_edgetpu_device)(unsafe.Pointer(cDevices))[:numDevices:numDevices]
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// Convert the list to go struct
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var devices []Device
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for i := C.size_t(0); i < numDevices; i++ {
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devices = append(devices, Device{
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Type: DeviceType(deviceSlice[i]._type),
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Path: C.GoString(deviceSlice[i].path),
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})
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}
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// Free the list
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C.edgetpu_free_devices(cDevices)
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return devices, nil
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}
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