func newGpFile() (*C.CameraFile, error) {
var gpFile *C.CameraFile
C.gp_file_new((**C.CameraFile)(unsafe.Pointer(&gpFile)))
if gpFile == nil {
return nil, fmt.Errorf("Cannot initialize camera file")
}
return gpFile, nil
}
func (c *Camera) FileReader(folder string, fileName string) io.ReadCloser {
cfr := new(cameraFileReader)
cfr.camera = c
cfr.folder = folder
cfr.fileName = fileName
cfr.offset = 0
cfr.closed = false
cFileName := C.CString(cfr.fileName)
cFolderName := C.CString(cfr.folder)
defer C.free(unsafe.Pointer(cFileName))
defer C.free(unsafe.Pointer(cFolderName))
C.gp_file_new(&cfr.cCameraFile)
C.gp_camera_file_get(c.camera, cFolderName, cFileName, C.GP_FILE_TYPE_NORMAL, cfr.cCameraFile, c.context)
var cSize C.ulong
C.gp_file_get_data_and_size(cfr.cCameraFile, &cfr.cBuffer, &cSize)
cfr.fullSize = uint64(cSize)
return cfr
}