www.gusucode.com > ShopEx481 & PHPWind 整合版码程序 > bbs/require/gif.class.php
<?php !function_exists('readover') && exit('Forbidden'); Class GIFEncoder { var $GIF = "GIF89a"; /* GIF header 6 bytes */ var $VER = "GIFEncoder V2.06"; /* Encoder version */ var $BUF = Array(); var $LOP = 0; var $DIS = 2; var $COL = -1; var $IMG = -1; var $ERR = Array( 'ERR00' =>"Does not supported function for only one image!", 'ERR01' =>"Source is not a GIF image!", 'ERR02' =>"Unintelligible flag ", 'ERR03' =>"Could not make animation from animated GIF source", ); function GIFEncoder($GIF_src, $GIF_dly, $GIF_lop, $GIF_dis, $GIF_red, $GIF_grn, $GIF_blu, $GIF_mod) { if (!is_array($GIF_src) && !is_array($GIF_tim)) { printf("%s: %s",$this->VER,$this->ERR['ERR00']); exit(0); } $this->LOP = ($GIF_lop > -1) ? $GIF_lop : 0; $this->DIS = ($GIF_dis > -1) ? (($GIF_dis < 3) ? $GIF_dis : 3) : 2; $this->COL = ($GIF_red > -1 && $GIF_grn > -1 && $GIF_blu > -1) ? ($GIF_red | ($GIF_grn << 8) | ($GIF_blu << 16)) : -1; for ($i = 0; $i < count($GIF_src); $i++) { if (strtolower($GIF_mod) == "url") { $this->BUF[] = fread(fopen($GIF_src[$i], "rb"),filesize($GIF_src[$i])); } elseif (strtolower($GIF_mod) == "bin") { $this->BUF[] = $GIF_src[$i]; } else { printf("%s: %s ( %s )!", $this->VER, $this->ERR['ERR02'], $GIF_mod); exit(0); } if (substr($this->BUF[$i], 0, 6) != "GIF87a" && substr($this->BUF[$i], 0, 6) != "GIF89a") { printf("%s: %d %s", $this->VER, $i, $this->ERR['ERR01']); exit(0); } for ($j = (13 + 3 * (2 << (ord($this->BUF[$i]{10}) & 0x07))), $k = true; $k; $j++) { switch ($this->BUF[$i]{$j}) { case "!": if ((substr($this->BUF[$i], ($j + 3), 8)) == "NETSCAPE") { printf("%s: %s ( %s source )!", $this->VER, $this->ERR['ERR03'], ($i + 1)); exit(0); } break; case ";": $k = false; break; } } } GIFEncoder::GIFAddHeader(); for ($i = 0; $i < count($this->BUF); $i++) { GIFEncoder::GIFAddFrames ($i,$GIF_dly[$i]); } GIFEncoder::GIFAddFooter (); } function GIFAddHeader() { $cmap = 0; if (ord($this->BUF[0]{10}) & 0x80) { $cmap = 3 * (2 << (ord($this->BUF[0]{10}) & 0x07)); $this->GIF .= substr($this->BUF[0], 6, 7); $this->GIF .= substr($this->BUF[0], 13, $cmap); $this->GIF .= "!\377\13NETSCAPE2.0\3\1" . GIFEncoder::GIFWord($this->LOP) . "\0"; } } function GIFAddFrames($i, $d) { $Locals_str = 13 + 3 * (2 << (ord($this->BUF[$i]{10}) & 0x07)); $Locals_end = strlen($this->BUF[$i]) - $Locals_str - 1; $Locals_tmp = substr($this->BUF[$i], $Locals_str, $Locals_end); $Global_len = 2 << (ord($this->BUF[0]{10}) & 0x07); $Locals_len = 2 << (ord($this->BUF[$i]{10}) & 0x07); $Global_rgb = substr($this->BUF[0], 13, 3 * (2 << (ord($this->BUF[0]{10}) & 0x07))); $Locals_rgb = substr($this->BUF[$i], 13, 3 * (2 << (ord($this->BUF[$i]{10}) & 0x07))); $Locals_ext = "!\xF9\x04" . chr(($this->DIS << 2) + 0) . chr(($d >> 0) & 0xFF) . chr(($d >> 8) & 0xFF) . "\x0\x0"; if ($this->COL > -1 && ord($this->BUF[$i]{10}) & 0x80) { for ($j = 0; $j < (2 << (ord($this->BUF[$i]{10}) & 0x07)); $j++) { if (ord($Locals_rgb{3 * $j + 0}) == ($this->COL >> 0) & 0xFF && ord($Locals_rgb{3 * $j + 1}) == ($this->COL >> 8) & 0xFF && ord($Locals_rgb{3 * $j + 2}) == ($this->COL >> 16) & 0xFF) { $Locals_ext = "!\xF9\x04" . chr(($this->DIS << 2) + 1) . chr(($d >> 0) & 0xFF) . chr(($d >> 8) & 0xFF) . chr($j) . "\x0"; break; } } } switch ($Locals_tmp{0}) { case "!": $Locals_img = substr($Locals_tmp, 8, 10); $Locals_tmp = substr($Locals_tmp, 18, strlen($Locals_tmp) - 18); break; case ",": $Locals_img = substr($Locals_tmp, 0, 10); $Locals_tmp = substr($Locals_tmp, 10, strlen ($Locals_tmp) - 10); break; } if (ord($this->BUF[$i]{10}) & 0x80 && $this->IMG > -1) { if ($Global_len == $Locals_len) { if (GIFEncoder::GIFBlockCompare($Global_rgb, $Locals_rgb, $Global_len)) { $this->GIF .= ($Locals_ext . $Locals_img . $Locals_tmp); } else { $byte = ord($Locals_img{9}); $byte |= 0x80; $byte &= 0xF8; $byte |= (ord($this->BUF[0]{10}) & 0x07); $Locals_img{9} = chr($byte); $this->GIF .= ($Locals_ext . $Locals_img . $Locals_rgb . $Locals_tmp); } } else { $byte = ord($Locals_img{9}); $byte |= 0x80; $byte &= 0xF8; $byte |= (ord($this->BUF[$i]{10}) & 0x07); $Locals_img{9} = chr($byte); $this->GIF .= ($Locals_ext . $Locals_img . $Locals_rgb . $Locals_tmp); } } else { $this->GIF .= ($Locals_ext . $Locals_img . $Locals_tmp); } $this->IMG = 1; } function GIFAddFooter() { $this->GIF .= ";"; } function GIFBlockCompare($GlobalBlock, $LocalBlock, $Len) { for ($i = 0; $i < $Len; $i++) { if ($GlobalBlock{3 * $i + 0} != $LocalBlock{3 * $i + 0} || $GlobalBlock{3 * $i + 1} != $LocalBlock{3 * $i + 1} || $GlobalBlock{3 * $i + 2} != $LocalBlock{3 * $i + 2}) { return 0; } } return 1; } function GIFWord($int) { return (chr($int & 0xFF) . chr(($int >> 8) & 0xFF)); } function GetAnimation() { return $this->GIF; } } ?>