- /**
- * Generate code for GIF animations
- * Edit bbs.it-home.org
- */
- Class Gifmerge {
- var $ver = ' 1.1 ';
- var $dly = 50;
- var $mod = ' C_file ';
- var $first = true;
- var $use _loop = false;
- var $transparent = false;
- var $use _global_in = false;
- var $x = 0;
- var $y = 0;
- var $ch = 0;
- var $fin = 0;
- var $fout = ';
- var $loop = 0;
- var $delay = 0;
- var $width = 0;
- var $height = 0;
- var $trans 1 = 255;
- var $trans 2 = 255;
- var $trans 3 = 255;
- var $disposal = 2;
- var $out _color_table_size = 0;
- var $local _color_table_flag = 0;
- var $global _color_table_size = 0;
- var $out _color_table_sizecode = 0;
- var $global _color_table_sizecode= 0;
- var $gif = Array (0x47, 0x49, 0x46);
- var $buffer = array ();
- var $local _in = Array ();
- var $global _in = Array ();
- var $global _out = Array ();
- var $logical _screen_descriptor = Array ();
- function Gifmerge ($images, $t 1, $t 2, $t 3, $loop, $DL, $xpos, $ypos, $model) {
- if ($model) {
- $this->mod = $model;
- }
- if ($loop >-1) {
- $this->loop = Floor ($loop-1);
- $this->use_loop = true;
- }
- if ($t 1 > 1 && $t 2 > 1 && $t 3 >-1) {
- $this->trans1 = $t 1;
- $this->trans2 = $t 2;
- $this->trans3 = $t 3;
- $this->transparent = true;
- }
- for ($i = 0; $i < count ($images); $i + +) {
- $DL [$i]? $this->delay = $dl [$i]: $this->delay = $this->dly;
- $xpos [$i]? $this->x = $xpos [$i]: $this->x = 0;
- $ypos [$i]? $this->y = $ypos [$i]: $this->y = 0;
- $this->start_gifmerge_process ($images [$i]);
- }
- $this->fout. = "/x3b";
- }
- function Start_gifmerge_process ($fp) {
- if ($this->mod = = ' C_file ') {
- if (! $this->fin = fopen ($fp, ' RB ')) {
- Return
- }
- } elseif ($this->mod = = ' C_memory ') {
- $this->ch = 0;
- $this->fin = $fp;
- }
- $this->getbytes (6);
- if (! $this->arrcmp ($this->buffer, $this->gif, 3)) {
- Return
- }
- $this->getbytes (7);
- if ($this->first) $this->logical_screen_descriptor = $this->buffer;
- $this->global_color_table_sizecode = $this->buffer[4] & 0x07;
- $this->global_color_table_size = 2 << $this->global_color_table_sizecode;
- if ($this->buffer[4] & 0x80) {
- $this->getbytes ((3 * $this->global_color_table_size));
- for ($i = 0; $i < ((3 * $this->global_color_table_size); $i + +) {
- $this->global_in[$i] = $this->buffer[$i];
- }
- if ($this->out_color_table_size = = 0) {
- $this->out_color_table_size = $this->global_color_table_size;
- $out _color_table_sizecode = $this->global_color_table_sizecode;
- $this->global_out = $this->global_in;
- }
- if ($this->global_color_table_size! = $this->out_color_table_size | | $this->arrcmp ($this->global_out, $ This->global_in, (3 * $this->global_color_table_size))) {
- $this->use_global_in = true;
- }
- }
- for ($loop = true; $loop;) {
- $this->getbytes (1);
- Switch ($this->buffer[0]) {
- Case 0X21:
- $this->read_extension ();
- Break
- Case 0X2C:
- $this->read_image_descriptor ();
- Break
- Case 0X3B:
- $loop = false;
- Break
- Default
- $loop = false;
- }
- }
- if ($this->mod = = ' C_file ') {
- Fclose ($this->fin);
- }
- }
- function Read_image_descriptor () {
- $this->getbytes (9);
- $head = $this->buffer;
- $this->local_color_table_flag = ($this->buffer[8] & 0x80)? True:false;
- if ($this->local_color_table_flag) {
- $sizecode = $this->buffer[8] & 0x07;
- $size = 2 << $sizecode;
- $this->getbytes (3 * $size);
- for ($i = 0; $i < (3 * $size); $i + +) {
- $this->local_in[$i] = $this->buffer[$i];
- }
- if ($this->out_color_table_size = = 0) {
- $this->out_color_table_size = $size;
- $out _color_table_sizecode = $sizecode;
- for ($i = 0; $i < (3 * $size); $i + +)
- {
- $this->global_out[$i] = $this->local_in[$i];
- }
- }
- }
- if ($this->first) {
- $this->first = false;
- $this->fout. = "/x47/x49/x46/x38/x39/x61";
- if ($this->width && $this->height) {
- $this->logical_screen_descriptor[0] = $this->width & 0xFF;
- $this->logical_screen_descriptor[1] = ($this->width & 0xff00) >> 8;
- $this->logical_screen_descriptor[2] = $this->height & 0xFF;
- $this->logical_screen_descriptor[3] = ($this->height & 0xff00) >> 8;
- }
- $this->logical_screen_descriptor[4] |= 0x80;
- $this->logical_screen_descriptor[5] &= 0xF0;
- $this->logical_screen_descriptor[6] |= $this->out_color_table_sizecode;
- $this->putbytes ($this->logical_screen_descriptor, 7);
- $this->putbytes ($this->global_out, ($this->out_color_table_size * 3));
- if ($this->use_loop) {
- $ns [0] = 0x21;
- $ns [1] = 0xFF;
- $ns [2] = 0x0B;
- $ns [3] = 0x4e;
- $ns [4] = 0x45;
- $ns [5] = 0x54;
- $ns [6] = 0x53;
- $ns [7] = 0x43;
- $ns [8] = 0x41;
- $ns [9] = 0x50;
- $ns [Ten] = 0x45;
- $ns [One] = 0x32;
- $ns [n] = 0x2e;
- $ns [] = 0x30;
- $ns [] = 0x03;
- $ns [+] = 0x01;
- $ns [+] = $this->loop & 255;
- $ns [] = $this->loop >> 8;
- $ns [] = 0x00;
- $this->putbytes ($ns, 19);
- }
- }
- if ($this->use_global_in) {
- $outtable = $this->global_in;
- $outsize = $this->global_color_table_size;
- $outsizecode = $this->global_color_table_sizecode;
- } else {
- $outtable = $this->global_out;
- $outsize = $this->out_color_table_size;
- }
- if ($this->local_color_table_flag) {
- if ($size = = $this->out_color_table_size &&! $this->arrcmp ($this->local_in, $this->global_out, $ Size)) {
- $outtable = $global _out;
- $outsize = $this->out_color_table_size;
- } else {
- $outtable = $this->local_in;
- $outsize = $size;
- $outsizecode = $sizecode;
- }
- }
- $use _trans = false;
- if ($this->transparent) {
- for ($i = 0; $i < $outsize; $i + +) {
- if ($outtable [3 * $i] = = $this->trans1 && $outtable [3 * $i + 1] = = $this->trans2 && $outtable [3 * $ i + 2] = = $this->trans3) {
- Break
- }
- }
- if ($i < $outsize) {
- $transindex = $i;
- $use _trans = true;
- }
- }
- if ($this->delay | | $use _trans) {
- $this->buffer[0] = 0x21;
- $this->buffer[1] = 0xf9;
- $this->buffer[2] = 0x04;
- $this->buffer[3] = ($this->disposal << 2) + ($use _trans? 1:0);
- $this->buffer[4] = $this->delay & 0xff;
- $this->buffer[5] = ($this->delay & 0xff00) >> 8;
- $this->buffer[6] = $use _trans? $transindex: 0;
- $this->buffer[7] = 0x00;
- $this->putbytes ($this->buffer,8);
- }
- $this->buffer[0] = 0x2c;
- $this->putbytes ($this->buffer,1);
- $head [0] = $this->x & 0xff;
- $head [1] = ($this->x & 0xff00) >> 8;
- $head [2] = $this->y & 0xff;
- $head [3] = ($this->y & 0xff00) >> 8;
- $head [8] &= 0x40;
- if ($outtable! = $this->global_out) {
- $head [8] |= 0x80;
- $head [8] |= $outsizecode;
- }
- $this->putbytes ($head, 9);
- if ($outtable! = $this->global_out) {
- $this->putbytes ($outtable, (3 * $outsize));
- }
- $this->getbytes (1);
- $this->putbytes ($this->buffer,1);
- for (;;) {
- $this->getbytes (1);
- $this->putbytes ($this->buffer,1);
- if ($u = $this->buffer[0]) = = 0) {
- Break
- }
- $this->getbytes ($u);
- $this->putbytes ($this->buffer, $u);
- }
- }
- function Read_extension () {
- $this->getbytes (1);
- Switch ($this->buffer[0]) {
- Case 0XF9:
- $this->getbytes (6);
- Break
- Case 0XFE:
- for (;;) {
- $this->getbytes (1);
- if ($u = $this->buffer[0]) = = 0) {
- Break
- }
- $this->getbytes ($u);
- }
- Break
- Case 0X01:
- $this->getbytes (13);
- for (;;) {
- $this->getbytes (0);
- if ($u = $this->buffer[0]) = = 0) {
- Break
- }
- $this->getbytes ($u);
- }
- Break
- Case 0xFF:
- $this->getbytes (9);
- $this->getbytes (3);
- for (;;) {
- $this->getbytes (1);
- if (! $this->buffer[0]) {
- Break
- }
- $this->getbytes ($this->buffer[0]);
- }
- Break
- Default
- for (;;) {
- $this->getbytes (1);
- if (! $this->buffer[0]) {
- Break
- }
- $this->getbytes ($this->buffer[0]);
- }
- }
- }
- function arrcmp ($b, $s, $l) {
- for ($i = 0; $i < $l; $i + +) {
- if ($s {$i}! = $b {$i}) {
- return false;
- }
- }
- return true;
- }
- function GetBytes ($l) {
- for ($i = 0; $i < $l; $i + +) {
- if ($this->mod = = ' C_file ') {
- $bin = Unpack (' c* ', fread ($this->fin, 1));
- $this->buffer[$i] = $bin [1];
- } elseif ($this->mod = = ' C_memory ') {
- $bin = Unpack (' c* ', substr ($this->fin, $this->ch, 1));
- $this->buffer[$i] = $bin [1];
- $this->ch++;
- }
- }
- return $this->buffer;
- }
- function putbytes ($s, $l) {
- for ($i = 0; $i < $l; $i + +) {
- $this->fout. = Pack (' c* ', $s [$i]);
- }
- }
- function Getanimation () {
- return $this->fout;
- }
- }
- ?>
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