https://joseluisbz.wordpress.com/2013/08/06/obtaining-size-or-dimesion-of-images/ (বিএমপি, পিএনজি, জিআইএফ, জেপিজি, টিআইএফ বা ডাব্লুএমএফ)
এখানে দুটি ফর্ম্যাট পিএনজি এবং জেপিজির জন্য।
আমার কোডটি আমার ব্যবহারের জন্য ডিজাইন করা ক্লাস থেকে এসেছে, আপনি আপনার প্রয়োজন অনুসারে সম্পাদনা করতে পারেন।
দয়া করে পিএইচপি ব্যবহার করে এই ফাংশন / পদ্ধতিটি পরীক্ষা করুন :
public function ByteStreamImageString($ByteStream,&$Formato,&$Alto,&$Ancho) {
$Alto = 0;
$Ancho = 0;
$Formato = -1;
$this->HexImageString = "Error";
if (ord($ByteStream[0])==137 && ord($ByteStream[1])==80 && ord($ByteStream[2])==78){
$Formato = 1; //PNG
$Alto = $this->Byte2PosInt($ByteStream[22],$ByteStream[23]);
$Ancho = $this->Byte2PosInt($ByteStream[18],$ByteStream[19]);
}
if (ord($ByteStream[0])==255 && ord($ByteStream[1])==216
&& ord($ByteStream[2])==255 && ord($ByteStream[3])==224){
$Formato = 2; //JPG
$PosJPG = 2;
while ($PosJPG<strlen($ByteStream)){
if (sprintf("%02X%02X", ord($ByteStream[$PosJPG+0]),ord($ByteStream[$PosJPG+1]))=="FFC0"){
$Alto = $this->Byte2PosInt($ByteStream[$PosJPG+5],$ByteStream[$PosJPG+6]);
$Ancho = $this->Byte2PosInt($ByteStream[$PosJPG+7],$ByteStream[$PosJPG+8]);
}
$PosJPG = $PosJPG+2+$this->Byte2PosInt($ByteStream[$PosJPG+2],$ByteStream[$PosJPG+3]);
}
}
if ($Formato > 0){
$this->HexImageString = "";
$Salto = 0;
for ($i=0;$i < strlen($ByteStream); $i++){
$Salto++;
$this->HexImageString .= sprintf("%02x", ord($ByteStream[$i]));
if ($Salto==64){
$this->HexImageString .= "\n";
$Salto = 0;
}
}
}
}
private function Byte2PosInt($Byte08,$Byte00) {
return ((ord($Byte08) & 0xFF) << 8)|((ord($Byte00) & 0xFF) << 0);
}
পিএইচপি কোড ব্যবহার করে:
$iFormato = NULL;//Format PNG or JPG
$iAlto = NULL; //High
$iAncho = NULL;//Wide
ByteStreamImageString($ImageJPG,$iFormato,$iAlto,$iAncho);//The Dimensions will stored in iFormato,iAlto,iAncho
এখন জাভা ব্যবহার করে এই ফাংশন / পদ্ধতি :
private void ByteStreamImageString(byte[] ByteStream,int[] Frmt,int[] High,int[] Wide) {
High[0] = 0;
Wide[0] = 0;
Frmt[0] = -1;
this.HexImageString = "Error";
if ((int)(ByteStream[0]&0xFF)==137 && (int)(ByteStream[1]&0xFF)==80 &&(int)(ByteStream[2]&0xFF)==78){
Frmt[0] = 1; //PNG
High[0] = this.Byte2PosInt(ByteStream[22],ByteStream[23]);
Wide[0] = this.Byte2PosInt(ByteStream[18],ByteStream[19]);
}
if ((int)(ByteStream[0]&0xFF)==255 && (int)(ByteStream[1]&0xFF)==216
&&(int)(ByteStream[2]&0xFF)==255 && (int)(ByteStream[3]&0xFF)==224){
Frmt[0] = 2; //JPG
int PosJPG = 2;
while (PosJPG<ByteStream.length){
if (String.format("%02X%02X", ByteStream[PosJPG+0],ByteStream[PosJPG+1]).equals("FFC0")){
High[0] = this.Byte2PosInt(ByteStream[PosJPG+5],ByteStream[PosJPG+6]);
Wide[0] = this.Byte2PosInt(ByteStream[PosJPG+7],ByteStream[PosJPG+8]);
}
PosJPG = PosJPG+2+this.Byte2PosInt(ByteStream[PosJPG+2],ByteStream[PosJPG+3]);
}
}
if (Frmt[0] > 0){
this.HexImageString = "";
int Salto = 0;
for (int i=0;i < ByteStream.length; i++){
Salto++;
this.HexImageString += String.format("%02x", ByteStream[i]);
if (Salto==64){
this.HexImageString += "\n";
Salto = 0;
}
}
}
}
private Integer Byte2PosInt(byte Byte08, byte Byte00) {
return new Integer (((Byte08 & 0xFF) << 8)|((Byte00 & 0xFF) << 0));
}
জাভা কোড ব্যবহার:
int[] iFormato = new int[1]; //Format PNG or JPG
int[] iAlto = new int[1]; //High
int[] iAncho = new int[1]; //Wide
ByteStreamImageString(ImageJPG,iFormato,iAlto,iAncho); //The Dimensions will stored in iFormato[0],iAlto[0],iAncho[0]