Newb Techie Join Date: Mar 2008 Posts: 26
|  GD Animated Gifs
Hey folks,
I'm working on animating gifs in GD. I've adapted the use of the GIFEncoder class from phpclasses.
original gif.php PHP Code: <?php
Class GIFAnimator {
var $GIF = "GIF89a";
var $VER = "GIFEncoder V2.05";
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=>"Does not make animation from animated GIF source",
);
function GIFAnimator (
$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 ] ) );
}
else if ( 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;
}
}
}
GIFAnimator::GIFHead ( );
for ( $i = 0; $i < count ( $this->BUF ); $i++ ) {
GIFAnimator::GIFGetFrames ( $i, $GIF_dly [ $i ] );
}
GIFAnimator::GIFFoot ( );
}
function GIFHead ( ) {
$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" . GIFAnimator::GIFWord ( $this->LOP ) . "\0";
}
}
function GIFGetFrames ( $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 >> 16 ) & 0xFF ) &&
ord ( $Locals_rgb { 3 * $j + 1 } ) == ( ( $this->COL >> 8 ) & 0xFF ) &&
ord ( $Locals_rgb { 3 * $j + 2 } ) == ( ( $this->COL >> 0 ) & 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 ( GIFAnimator::GIFBlock ( $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 GIFFoot ( ) {
$this->GIF .= ";";
}
function GIFBlock ( $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 );
}
}
?>
I have used PHP Code: <?php
include('gif.php');
$image = imagecreatefrompng("../mychatbox/user/helraizer1.png");
if ( $dh = opendir ( "frames/" ) ) {
while ( false !== ( $dat = readdir ( $dh ) ) ) {
if ( $dat != "." && $dat != ".." ) {
$frames [ ] .= "frames/$dat";
$framed [ ] = 20;
}
}
closedir ( $dh );
}
foreach( $frames as $thePfhrame )
{
$imgPfhrame = imagecreatefromgif($thePfhrame);
imagecopymerge($image, $imgPfhrame, imageSX($image)/2, imageSY($image)/1.5, 0, 0, 15, 15, 100);
}
$gif = new GIFAnimator (
$frames, //sources - URL or path
$framed, //delay times - int
0, //Animation loops - int - 0 is infinite
2, //Disposal - int
-1, -1, -1, //transparency red, green, blue - int
"url" // source type
);
header("Content-Type: image/gif");
echo $gif->GetAnimation();
FWrite ( FOpen ( "img.gif", "wb" ), $gif->GetAnimation ( ) );
?> and it produces this: 
As you can see the one that is in middle is animated! So that works perfectly fine, on its own.
However when I put the code in my showimage script (to produce the shoutbox), which is in a different folder, but still has a 'frames' folder with the same frames in it, it gives me the error. Quote: |
GIFEncoder V2.05: Does not supported function for only one image!
| Even though there are 9 frames in the folder. PHP Code: if(stristr($line, ":roll:")) {
session_register("roll");
$_SESSION['roll'] = 1;
}
if (isset($filter)) {
header("Content-Type: image/png"); // tell the browser what we're gonna give it
imagepng($image);
} elseif ($page == 1) {
if(!isset($_SESSION['roll'])) {
header("Content-Type: image/png"); // tell the browser what we're gonna give it
imagepng($image);
imagepng($image, "./user/" . $user . $box. ".png");
} else {
$pos = strpos($line, ":roll:");
if ($font == "palab") {
$post = $pos * 5.7;
} elseif ($font == "comicsans") {
$post = $pos * 6.725;
} elseif ($font == "calibri") {
$post = $pos * 5;
} elseif ($font == "courbd") {
$post = ($pos * 5.<!-- s8) --><img src="{SMILIES_PATH}/icon_cool.gif\" alt=\"8)\" title=\"Cool\" /><!-- s8) --> + 1;
} elseif ($font == "arial") {
$post = ($pos * 7.3) + 1;
} else {
}
if ( $dh = opendir ( "frames/" ) ) {
while ( false !== ( $dat = readdir ( $dh ) ) ) {
if ( $dat != "." && $dat != ".." ) {
$frames [ ] .= "frames/$dat";
$framed [ ] = 17;
}
}
closedir ( $dh );
}
foreach( $frames as $thePfhrame )
{
$imgPfhrame = imagecreatefromgif($thePfhrame);
imagecopymerge($image, $imgPfhrame, ($cur_line_x + $post) + 6, (($cur_line_y + $lineheight) - 30.5), 0, 0, 15, 15, 100);
}
$gif = new GIFAnimator (
$frames, //sources - URL or path
$framed, //delay times - int
0, //Animation loops - int - 0 is infinite
2, //Disposal - int
-1, -1, -1, //transparency red, green, blue - int
"url" // source type
);
header("Content-Type: image/gif");
echo $gif->GetAnimation();
FWrite ( FOpen ( "helraizer2.gif", "wb" ), $gif->GetAnimation ( ) );
}
else {
header("Content-Type: image/png"); // tell the browser what we're gonna give it
imagepng($image);
}
The error comes about if $frames isn't an array but, it is. Any idea why this happens?
Sam |
Linear Mode
