// Adaptively changes the size of the canvas, returns true on success.
func (cv Canvas) AdaptiveResize(width uint, height uint) bool {
status := C.MagickAdaptiveResizeImage(cv.wand, C.ulong(width), C.ulong(height))
if status == C.MagickFalse {
return false
}
return true
}
// ResizeBlur returns a new image resized to the given dimensions using the provided
// filter and blur factor (where > 1 is blurry, < 1 is sharp). If width or height is
// < 0, it's calculated proportionally to the other dimension. If both of them are < 0,
// an error is returned.
func (im *Image) ResizeBlur(width, height int, filter Filter, blur float64) (*Image, error) {
var data C.ResizeData
if width < 0 {
if height < 0 {
return nil, fmt.Errorf("invalid resize %dx%d", width, height)
}
h := float64(im.Height())
var ratio float64
if h != 0 {
ratio = float64(im.Width()) / h
}
width = int(float64(height) * ratio)
}
if height < 0 {
if width < 0 {
return nil, fmt.Errorf("invalid resize %dx%d", width, height)
}
var ratio float64
w := float64(im.Width())
if w != 0 {
ratio = float64(im.Height()) / w
}
height = int(float64(width) * ratio)
}
data.columns = C.ulong(width)
data.rows = C.ulong(height)
data.filter = C.FilterTypes(filter)
data.blur = C.double(blur)
return im.applyDataFunc("resizing", C.ImageDataFunc(C.resizeImage), &data)
}
// Extract runs the extractor and returns a slice of Entities found in the
// given tokens.
func (ext *Extractor) Extract(tokens []string) ([]Entity, error) {
ctokens := C.ner_arr_make(C.int(len(tokens)) + 1) // NULL termination
defer C.ner_arr_free(ctokens, C.int(len(tokens))+1)
for i, t := range tokens {
cs := C.CString(t) // released by ner_arr_free
C.ner_arr_set(ctokens, cs, C.int(i))
}
dets := C.mitie_extract_entities(ext.ner, ctokens)
defer C.mitie_free(unsafe.Pointer(dets))
if dets == nil {
return nil, ErrMemory
}
n := int(C.mitie_ner_get_num_detections(dets))
entities := make([]Entity, n, n)
for i := 0; i < n; i++ {
pos := int(C.mitie_ner_get_detection_position(dets, C.ulong(i)))
len := int(C.mitie_ner_get_detection_length(dets, C.ulong(i)))
entities[i] = Entity{
Tag: int(C.mitie_ner_get_detection_tag(dets, C.ulong(i))),
Score: float64(C.mitie_ner_get_detection_score(dets, C.ulong(i))),
Name: strings.Join(tokens[pos:pos+len], " "),
Range: Range{pos, pos + len},
}
}
return entities, nil
}
// Extracts a region from the canvas.
func (cv Canvas) Crop(x int, y int, width uint, height uint) bool {
status := C.MagickCropImage(cv.wand, C.ulong(width), C.ulong(height), C.long(x), C.long(y))
if status == C.MagickFalse {
return false
}
return true
}
// Creates an empty canvas of the given dimensions.
func (cv Canvas) Blank(width uint, height uint) bool {
status := C.MagickNewImage(cv.wand, C.ulong(width), C.ulong(height), cv.bg)
if status == C.MagickFalse {
return false
}
return true
}
// Changes the size of the canvas using specified filter and blur, returns true on success.
func (self *Canvas) ResizeWithFilter(width uint, height uint, filter uint, blur float32) error {
if width == 0 && height == 0 {
return fmt.Errorf("Please specify at least one of dimensions")
}
if width == 0 || height == 0 {
origHeight := uint(C.MagickGetImageHeight(self.wand))
origWidth := uint(C.MagickGetImageWidth(self.wand))
if width == 0 {
ratio := float32(origHeight) / float32(height)
width = uint(float32(origWidth) / ratio)
}
if height == 0 {
ratio := float32(origWidth) / float32(width)
height = uint(float32(origHeight) / ratio)
}
}
success := C.MagickResizeImage(self.wand, C.ulong(width), C.ulong(height), C.FilterTypes(filter), C.double(blur))
if success == C.MagickFalse {
return fmt.Errorf("Could not resize: %s", self.Error())
}
return nil
}
// Changes the size of the canvas, returns true on success.
func (cv Canvas) Resize(width uint, height uint) bool {
status := C.MagickResizeImage(cv.wand, C.ulong(width), C.ulong(height), C.GaussianFilter, C.double(1.0))
if status == C.MagickFalse {
return false
}
return true
}
// ResizeBlur returns a new image resized to the given dimensions using the provided
// filter and blur factor (where > 1 is blurry, < 1 is sharp).
func (im *Image) ResizeBlur(width, height int, filter Filter, blur float64) (*Image, error) {
var data C.ResizeData
data.columns = C.ulong(width)
data.rows = C.ulong(height)
data.filter = C.FilterTypes(filter)
data.blur = C.double(blur)
return im.applyDataFunc("resizing", C.ImageDataFunc(C.resizeImage), &data)
}
func Call(p, a1, a2, a3 uintptr) uintptr {
ret := C.dlcall(
C.ulong(p),
C.ulong(a1),
C.ulong(a2),
C.ulong(a3))
return uintptr(ret)
}
// Adaptively changes the size of the canvas, returns true on success.
func (self Canvas) AdaptiveResize(width uint, height uint) error {
success := C.MagickAdaptiveResizeImage(self.wand, C.ulong(width), C.ulong(height))
if success == C.MagickFalse {
return fmt.Errorf("Could not resize: %s", self.Error())
}
return nil
}
// Creates an empty canvas of the given dimensions.
func (self Canvas) Blank(width uint, height uint) error {
success := C.MagickNewImage(self.wand, C.ulong(width), C.ulong(height), self.bg)
if success == C.MagickFalse {
return fmt.Errorf("Could not create image: %s", self.Error())
}
return nil
}
// Extracts a region from the canvas.
func (self Canvas) Crop(x int, y int, width uint, height uint) error {
success := C.MagickCropImage(self.wand, C.ulong(width), C.ulong(height), C.long(x), C.long(y))
if success == C.MagickFalse {
return fmt.Errorf("Could not crop: %s", self.Error())
}
return nil
}
func fastHMAC(msg, key []byte) []byte {
toret := make([]byte, 512/8)
thing := C.ulong(512 / 8)
C.hmac_memory(sha512idx,
unsafe_bytes(key), C.ulong(len(key)),
unsafe_bytes(msg), C.ulong(len(msg)),
unsafe_bytes(toret), (&thing))
return toret
}
// Changes the size of the canvas, returns true on success.
func (self Canvas) Resize(width uint, height uint) error {
success := C.MagickResizeImage(self.wand, C.ulong(width), C.ulong(height), C.GaussianFilter, C.double(1.0))
if success == C.MagickFalse {
return fmt.Errorf("Could not resize: %s", self.Error())
}
return nil
}
// SetBit sets z to x, with x's i'th bit set to b (0 or 1).
// That is, if b is 1 SetBit sets z = x | (1 << i);
// if b is 0 SetBit sets z = x &^ (1 << i). If b is not 0 or 1,
// SetBit will panic.
func (z *Int) SetBit(x *Int, i int, b uint) *Int {
if z != x {
z.Set(x)
}
if b == 0 {
C._mpz_clrbit(&z.i[0], C.ulong(i))
} else {
C._mpz_setbit(&z.i[0], C.ulong(i))
}
return z
}
func Resize(img *C.Image, x, y int) (*C.Image, error) {
newImg := C.ResizeImage(img, C.ulong(x), C.ulong(y), C.LanczosFilter, 1.0, &exceptionInfo)
if newImg == nil {
C.CatchException(&exceptionInfo)
return nil, fmt.Errorf(C.GoString(exceptionInfo.reason))
}
C.DestroyImage(img)
return newImg, nil
}
func (im *Image) setPixels(r *Rect, src *C.PixelPacket, ex *C.ExceptionInfo) bool {
dst := C.SetImagePixelsEx(im.image, C.long(r.X), C.long(r.Y), C.ulong(r.Width), C.ulong(r.Height), ex)
if dst == nil {
return false
}
C.copy_pixel_packets(src, dst, C.int(r.Width*r.Height))
if C.SyncImagePixelsEx(im.image, ex) != C.MagickPass {
return false
}
return true
}
func (client *Client) PortRegister(portName, portType string, flags, bufferSize uint64) *Port {
cname := C.CString(portName)
defer C.free(unsafe.Pointer(cname))
ctype := C.CString(portType)
defer C.free(unsafe.Pointer(ctype))
cport := C.jack_port_register(client.handler, cname, ctype, C.ulong(flags), C.ulong(bufferSize))
if cport != nil {
return &Port{cport}
}
return nil
}
func (s *StatVfs) toCStat(o *C.struct_statvfs) {
o.f_bsize = C.ulong(s.BlockSize)
o.f_blocks = C.fsblkcnt_t(s.Blocks)
o.f_bfree = C.fsblkcnt_t(s.BlocksFree)
o.f_files = C.fsfilcnt_t(s.Files)
o.f_ffree = C.fsfilcnt_t(s.FilesFree)
o.f_fsid = C.ulong(s.Fsid)
o.f_flag = C.ulong(s.Flags)
o.f_namemax = C.ulong(s.NameMax)
}
/*
Scale() scales the size of this image to the given dimensions.
columns: The number of columns in the scaled image.
rows: The number of rows in the scaled image
*/
func (this *Image) Scale(columns int64, rows int64) error {
if this.magickWand == nil {
return errors.New("error scale image:magickwand is nil")
}
status := C.MagickScaleImage(this.magickWand, C.ulong(columns), C.ulong(rows))
if status == 0 {
var etype int
descr := C.MagickGetException(this.magickWand, (*C.ExceptionType)(unsafe.Pointer(&etype)))
defer C.MagickRelinquishMemory(unsafe.Pointer(descr))
return errors.New(fmt.Sprintf("error scale image: %s (ExceptionType = %d)", C.GoString(descr), etype))
}
return nil
}
func (this *Image) Resize(width int64, height int64) error {
if this.magickWand == nil {
return errors.New("error resizing image:magickwand is nil")
}
status := C.MagickResizeImage(this.magickWand, C.ulong(width), C.ulong(height), C.CubicFilter, 0.5)
if status == 0 {
var etype int
descr := C.MagickGetException(this.magickWand, (*C.ExceptionType)(unsafe.Pointer(&etype)))
defer C.MagickRelinquishMemory(unsafe.Pointer(descr))
return errors.New(fmt.Sprintf("error resizing image: %s (ExceptionType = %d)", C.GoString(descr), etype))
}
return nil
}
func (state fastGCMState) Seal(dst, nonce, plaintext, data []byte) []byte {
rawenc := make([]byte, len(plaintext))
sched := (*_Ctype_gcm_state)(unsafe.Pointer(&state[0]))
FASSERT(C.gcm_reset(sched) == C.CRYPT_OK)
FASSERT(C.gcm_add_iv(sched, unsafe_bytes(nonce), 12) == C.CRYPT_OK)
C.gcm_add_aad(sched, nil, 0)
FASSERT(C.gcm_process(sched, unsafe_bytes(plaintext), C.ulong(len(plaintext)),
unsafe_bytes(rawenc), C.GCM_ENCRYPT) == C.CRYPT_OK)
tag := buf.Alloc()
thing := C.ulong(16)
FASSERT(C.gcm_done(sched, unsafe_bytes(tag), &thing) == C.CRYPT_OK)
rawenc = append(rawenc, tag[:int(thing)]...)
buf.Free(tag)
return append(dst, rawenc...)
}
// SendCommand sends a raw command to the MySQL server.
func (conn *Connection) SendCommand(command uint32, data []byte) error {
ret := C.vt_simple_command(&conn.c, command, (*C.uchar)(unsafe.Pointer(&data[0])), C.ulong(len(data)), 1)
if ret != 0 {
return fmt.Errorf("error sending raw MySQL command: %v", conn.lastError(""))
}
return nil
}
// ExecuteFetch executes the query on the connection
func (conn *Connection) ExecuteFetch(query string, maxrows int, wantfields bool) (qr *sqltypes.Result, err error) {
if conn.IsClosed() {
return nil, sqldb.NewSQLError(2006, "Connection is closed")
}
if C.vt_execute(&conn.c, (*C.char)(hack.StringPointer(query)), C.ulong(len(query)), 0) != 0 {
return nil, conn.lastError(query)
}
defer conn.CloseResult()
qr = &sqltypes.Result{}
qr.RowsAffected = uint64(conn.c.affected_rows)
qr.InsertID = uint64(conn.c.insert_id)
if conn.c.num_fields == 0 {
return qr, nil
}
if qr.RowsAffected > uint64(maxrows) {
return nil, &sqldb.SQLError{
Num: 0,
Message: fmt.Sprintf("Row count exceeded %d", maxrows),
Query: string(query),
}
}
if wantfields {
qr.Fields = conn.Fields()
}
qr.Rows, err = conn.fetchAll()
return qr, err
}
// Connect uses the connection parameters to connect and returns the connection
func Connect(params sqldb.ConnParams) (sqldb.Conn, error) {
var err error
defer handleError(&err)
host := C.CString(params.Host)
defer cfree(host)
port := C.uint(params.Port)
uname := C.CString(params.Uname)
defer cfree(uname)
pass := C.CString(params.Pass)
defer cfree(pass)
dbname := C.CString(params.DbName)
defer cfree(dbname)
unixSocket := C.CString(params.UnixSocket)
defer cfree(unixSocket)
charset := C.CString(params.Charset)
defer cfree(charset)
flags := C.ulong(params.Flags)
conn := &Connection{}
if C.vt_connect(&conn.c, host, uname, pass, dbname, port, unixSocket, charset, flags) != 0 {
defer conn.Close()
return nil, conn.lastError("")
}
return conn, nil
}
func (conn Connection) Prepare(query string) (dbs db.Statement, e os.Error) {
s := Statement{};
s.conn = &conn;
conn.Lock();
s.stmt = C.mysql_stmt_init(conn.handle);
conn.Unlock();
if s.stmt == nil {
e = MysqlError("Prepare: Couldn't init statement (out of memory?)");
return;
}
conn.Lock();
cquery := strings.Bytes(query);
if r := C.mysql_stmt_prepare(
s.stmt, (*C.char)(unsafe.Pointer(&cquery[0])), C.ulong(len(query))); r != 0 {
e = conn.lastError()
} else {
dbs = s
}
conn.Unlock();
return;
}
func (d *Domain) SetMemory(memory uint64) error {
result := C.virDomainSetMemory(d.cptr, C.ulong(memory))
if result == -1 {
return GetLastError()
}
return nil
}
func (self *Connection) ExecuteFetch(query []byte, maxrows int) (qr *QueryResult, err error) {
defer handleError(&err)
self.validate()
if C.mysql_real_query(self.handle, (*C.char)(unsafe.Pointer(&query[0])), C.ulong(len(query))) != 0 {
return nil, self.lastError(query)
}
result := C.mysql_store_result(self.handle)
if result == nil {
if int(C.mysql_field_count(self.handle)) != 0 { // Query was supposed to return data, but it didn't
return nil, self.lastError(query)
}
qr = &QueryResult{}
qr.RowsAffected = uint64(C.mysql_affected_rows(self.handle))
qr.InsertId = uint64(C.mysql_insert_id(self.handle))
return qr, nil
}
defer C.mysql_free_result(result)
qr = &QueryResult{}
qr.RowsAffected = uint64(C.mysql_affected_rows(self.handle))
if qr.RowsAffected > uint64(maxrows) {
return nil, &SqlError{0, fmt.Sprintf("Row count exceeded %d", maxrows), string(query)}
}
qr.Fields = self.buildFields(result)
qr.Rows = self.fetchAll(result)
return qr, nil
}
func (this *MITIE) Process(body string) *list.List {
tokens := C.mitie_tokenize(C.CString(body))
defer C.mitie_free(unsafe.Pointer(tokens))
dets := C.mitie_extract_entities(this.ner, tokens)
defer C.mitie_free(unsafe.Pointer(dets))
num_dets := C.mitie_ner_get_num_detections(dets)
duplicates := set.New()
entites := list.New()
for i := 0; i < int(num_dets); i++ {
centity := C.get_entity(tokens, dets, C.ulong(i))
model := C.GoString(centity.model)
score := float64(centity.score)
value := C.GoString(centity.value)
key := fmt.Sprintf("%s:%s", value, model)
if duplicates.Has(key) {
continue
}
duplicates.Add(key)
if score > 0.5 {
entity := models.NewEntity(model, score, value)
entites.PushBack(entity)
}
}
return entites
}
func (d *VirDomain) SetMemoryFlags(memory uint64, flags uint32) error {
result := C.virDomainSetMemoryFlags(d.ptr, C.ulong(memory), C.uint(flags))
if result == -1 {
return GetLastError()
}
return nil
}
