Файл: sys/inc/gifencoder.php
Строк: 86
<?php
/*
:::::::::::::::::::::::::::::::::::::::::::::::::::::::::::
::
:: GIFEncoder Version 2.0 by Lбszlу Zsidi, http://gifs.hu
::
:: This class is a rewritten 'GifMerge.class.php' version.
::
:: Modification:
:: - Simplified and easy code,
:: - Ultra fast encoding,
:: - Built-in errors,
:: - Stable working
::
::
:: Updated at 2007. 02. 13. '00.05.AM'
::
::
::
:: Try on-line GIFBuilder Form demo based on GIFEncoder.
::
:: http://gifs.hu/phpclasses/demos/GifBuilder/
::
:::::::::::::::::::::::::::::::::::::::::::::::::::::::::::
*/
class GIFEncoder
{
public $GIF = "GIF89a"; /* GIF header 6 bytes */
public $VER = "GIFEncoder V2.05"; /* Encoder version */
public $BUF = array( );
public $LOP = 0;
public $DIS = 2;
public $COL = -1;
public $IMG = -1;
public $ERR = array(
ERR00=>"Does not supported function for only one image!",
ERR01=>"Source is not a GIF image!",
ERR02=>"Unintelligible flag ",
ERR03=>"Does not make animation from animated GIF source",
);
/*
:::::::::::::::::::::::::::::::::::::::::::::::::::
::
:: GIFEncoder...
::
*/
public 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();
}
/*
:::::::::::::::::::::::::::::::::::::::::::::::::::
::
:: GIFAddHeader...
::
*/
public 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);
$this->GIF .= "!37713NETSCAPE2.031" . GIFEncoder::GIFWord($this->LOP) . " ";
}
}
/*
:::::::::::::::::::::::::::::::::::::::::::::::::::
::
:: GIFAddFrames...
::
*/
public 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)));
$Locals_ext = "!xF9x04" . chr(($this->DIS << 2) + 0) .
chr(($d >> 0) & 0xFF) . chr(($d >> 8) & 0xFF) . "x0x0";
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 >> 16) & 0xFF) &&
ord($Locals_rgb { 3 * $j + 1 }) == (($this->COL >> 8) & 0xFF) &&
ord($Locals_rgb { 3 * $j + 2 }) == (($this->COL >> 0) & 0xFF)
) {
$Locals_ext = "!xF9x04" . chr(($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;
}
/*
:::::::::::::::::::::::::::::::::::::::::::::::::::
::
:: GIFAddFooter...
::
*/
public function GIFAddFooter()
{
$this->GIF .= ";";
}
/*
:::::::::::::::::::::::::::::::::::::::::::::::::::
::
:: GIFBlockCompare...
::
*/
public function GIFBlockCompare($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 * $i + 2 }
) {
return (0);
}
}
return (1);
}
/*
:::::::::::::::::::::::::::::::::::::::::::::::::::
::
:: GIFWord...
::
*/
public function GIFWord($int)
{
return (chr($int & 0xFF) . chr(($int >> 8) & 0xFF));
}
/*
:::::::::::::::::::::::::::::::::::::::::::::::::::
::
:: GetAnimation...
::
*/
public function GetAnimation()
{
return ($this->GIF);
}
}