LittleEndian2String() public static method

Retourne un nombre dans une représentation en Little Endian
public static LittleEndian2String ( integer $number, integer $minbytes = 1 ) : string
$number integer
$minbytes integer
return string
Ejemplo n.º 1
0
 function GD2ICOstring(&$gd_image_array)
 {
     foreach ($gd_image_array as $key => $gd_image) {
         $ImageWidths[$key] = ImageSX($gd_image);
         $ImageHeights[$key] = ImageSY($gd_image);
         $bpp[$key] = ImageIsTrueColor($gd_image) ? 32 : 24;
         $totalcolors[$key] = ImageColorsTotal($gd_image);
         $icXOR[$key] = '';
         for ($y = $ImageHeights[$key] - 1; $y >= 0; $y--) {
             for ($x = 0; $x < $ImageWidths[$key]; $x++) {
                 $argb = phpthumb_functions::GetPixelColor($gd_image, $x, $y);
                 $a = round(255 * ((127 - $argb['alpha']) / 127));
                 $r = $argb['red'];
                 $g = $argb['green'];
                 $b = $argb['blue'];
                 if ($bpp[$key] == 32) {
                     $icXOR[$key] .= chr($b) . chr($g) . chr($r) . chr($a);
                 } elseif ($bpp[$key] == 24) {
                     $icXOR[$key] .= chr($b) . chr($g) . chr($r);
                 }
                 if ($a < 128) {
                     @($icANDmask[$key][$y] .= '1');
                 } else {
                     @($icANDmask[$key][$y] .= '0');
                 }
             }
             // mask bits are 32-bit aligned per scanline
             while (strlen($icANDmask[$key][$y]) % 32) {
                 $icANDmask[$key][$y] .= '0';
             }
         }
         $icAND[$key] = '';
         foreach ($icANDmask[$key] as $y => $scanlinemaskbits) {
             for ($i = 0; $i < strlen($scanlinemaskbits); $i += 8) {
                 $icAND[$key] .= chr(bindec(str_pad(substr($scanlinemaskbits, $i, 8), 8, '0', STR_PAD_LEFT)));
             }
         }
     }
     foreach ($gd_image_array as $key => $gd_image) {
         $biSizeImage = $ImageWidths[$key] * $ImageHeights[$key] * ($bpp[$key] / 8);
         // BITMAPINFOHEADER - 40 bytes
         $BitmapInfoHeader[$key] = '';
         $BitmapInfoHeader[$key] .= "(";
         // DWORD  biSize;
         $BitmapInfoHeader[$key] .= phpthumb_functions::LittleEndian2String($ImageWidths[$key], 4);
         // LONG   biWidth;
         // The biHeight member specifies the combined
         // height of the XOR and AND masks.
         $BitmapInfoHeader[$key] .= phpthumb_functions::LittleEndian2String($ImageHeights[$key] * 2, 4);
         // LONG   biHeight;
         $BitmapInfoHeader[$key] .= "";
         // WORD   biPlanes;
         $BitmapInfoHeader[$key] .= chr($bpp[$key]) . "";
         // wBitCount;
         $BitmapInfoHeader[$key] .= "";
         // DWORD  biCompression;
         $BitmapInfoHeader[$key] .= phpthumb_functions::LittleEndian2String($biSizeImage, 4);
         // DWORD  biSizeImage;
         $BitmapInfoHeader[$key] .= "";
         // LONG   biXPelsPerMeter;
         $BitmapInfoHeader[$key] .= "";
         // LONG   biYPelsPerMeter;
         $BitmapInfoHeader[$key] .= "";
         // DWORD  biClrUsed;
         $BitmapInfoHeader[$key] .= "";
         // DWORD  biClrImportant;
     }
     $icondata = "";
     // idReserved;   // Reserved (must be 0)
     $icondata .= "";
     // idType;       // Resource Type (1 for icons)
     $icondata .= phpthumb_functions::LittleEndian2String(count($gd_image_array), 2);
     // idCount;      // How many images?
     $dwImageOffset = 6 + count($gd_image_array) * 16;
     foreach ($gd_image_array as $key => $gd_image) {
         // ICONDIRENTRY   idEntries[1]; // An entry for each image (idCount of 'em)
         $icondata .= chr($ImageWidths[$key]);
         // bWidth;          // Width, in pixels, of the image
         $icondata .= chr($ImageHeights[$key]);
         // bHeight;         // Height, in pixels, of the image
         $icondata .= chr($totalcolors[$key]);
         // bColorCount;     // Number of colors in image (0 if >=8bpp)
         $icondata .= "";
         // bReserved;       // Reserved ( must be 0)
         $icondata .= "";
         // wPlanes;         // Color Planes
         $icondata .= chr($bpp[$key]) . "";
         // wBitCount;       // Bits per pixel
         $dwBytesInRes = 40 + strlen($icXOR[$key]) + strlen($icAND[$key]);
         $icondata .= phpthumb_functions::LittleEndian2String($dwBytesInRes, 4);
         // dwBytesInRes;    // How many bytes in this resource?
         $icondata .= phpthumb_functions::LittleEndian2String($dwImageOffset, 4);
         // dwImageOffset;   // Where in the file is this image?
         $dwImageOffset += strlen($BitmapInfoHeader[$key]);
         $dwImageOffset += strlen($icXOR[$key]);
         $dwImageOffset += strlen($icAND[$key]);
     }
     foreach ($gd_image_array as $key => $gd_image) {
         $icondata .= $BitmapInfoHeader[$key];
         $icondata .= $icXOR[$key];
         $icondata .= $icAND[$key];
     }
     return $icondata;
 }
Ejemplo n.º 2
0
 function GD2BMPstring(&$gd_image)
 {
     $imageX = ImageSX($gd_image);
     $imageY = ImageSY($gd_image);
     $BMP = '';
     for ($y = $imageY - 1; $y >= 0; $y--) {
         $thisline = '';
         for ($x = 0; $x < $imageX; $x++) {
             $argb = phpthumb_functions::GetPixelColor($gd_image, $x, $y);
             $thisline .= chr($argb['blue']) . chr($argb['green']) . chr($argb['red']);
         }
         while (strlen($thisline) % 4) {
             $thisline .= "";
         }
         $BMP .= $thisline;
     }
     $bmpSize = strlen($BMP) + 14 + 40;
     // BITMAPFILEHEADER [14 bytes] - http://msdn.microsoft.com/library/en-us/gdi/bitmaps_62uq.asp
     $BITMAPFILEHEADER = 'BM';
     // WORD    bfType;
     $BITMAPFILEHEADER .= phpthumb_functions::LittleEndian2String($bmpSize, 4);
     // DWORD   bfSize;
     $BITMAPFILEHEADER .= phpthumb_functions::LittleEndian2String(0, 2);
     // WORD    bfReserved1;
     $BITMAPFILEHEADER .= phpthumb_functions::LittleEndian2String(0, 2);
     // WORD    bfReserved2;
     $BITMAPFILEHEADER .= phpthumb_functions::LittleEndian2String(54, 4);
     // DWORD   bfOffBits;
     // BITMAPINFOHEADER - [40 bytes] http://msdn.microsoft.com/library/en-us/gdi/bitmaps_1rw2.asp
     $BITMAPINFOHEADER = phpthumb_functions::LittleEndian2String(40, 4);
     // DWORD  biSize;
     $BITMAPINFOHEADER .= phpthumb_functions::LittleEndian2String($imageX, 4);
     // LONG   biWidth;
     $BITMAPINFOHEADER .= phpthumb_functions::LittleEndian2String($imageY, 4);
     // LONG   biHeight;
     $BITMAPINFOHEADER .= phpthumb_functions::LittleEndian2String(1, 2);
     // WORD   biPlanes;
     $BITMAPINFOHEADER .= phpthumb_functions::LittleEndian2String(24, 2);
     // WORD   biBitCount;
     $BITMAPINFOHEADER .= phpthumb_functions::LittleEndian2String(0, 4);
     // DWORD  biCompression;
     $BITMAPINFOHEADER .= phpthumb_functions::LittleEndian2String(0, 4);
     // DWORD  biSizeImage;
     $BITMAPINFOHEADER .= phpthumb_functions::LittleEndian2String(2835, 4);
     // LONG   biXPelsPerMeter;
     $BITMAPINFOHEADER .= phpthumb_functions::LittleEndian2String(2835, 4);
     // LONG   biYPelsPerMeter;
     $BITMAPINFOHEADER .= phpthumb_functions::LittleEndian2String(0, 4);
     // DWORD  biClrUsed;
     $BITMAPINFOHEADER .= phpthumb_functions::LittleEndian2String(0, 4);
     // DWORD  biClrImportant;
     return $BITMAPFILEHEADER . $BITMAPINFOHEADER . $BMP;
 }