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<?php
class Converter {
var $dith; /*Dithering enable/disable*/
var $w; /*Image width*/
var $h; /*Image height*/
var $cf; /*Color format*/
var $alpha; /*Add alpha byte or not*/
var $chroma; /*Chroma keyed?*/
var $d_out; /*Output data (result)*/
var $img; /*Image resource*/
var $out_name; /*Name of the output file*/
var $output_dir;/*Dir of the output file*/
var $path; /*Path to the image file*/
/*Helper variables*/
var $r_act;
var $b_act;
var $g_act;
/*For dithering*/
var $r_earr; /*Classification error for next row of pixels*/
var $g_earr;
var $b_earr;
var $r_nerr; /*Classification error for next pixel*/
var $g_err;
var $b_nerr;
const CF_TRUE_COLOR_332 = 0; /*Helper formats. Used internally*/
const CF_TRUE_COLOR_565 = 1;
const CF_TRUE_COLOR_565_SWAP = 2;
const CF_TRUE_COLOR_888 = 3;
const CF_ALPHA_1_BIT = 4;
const CF_ALPHA_2_BIT = 5;
const CF_ALPHA_4_BIT = 6;
const CF_ALPHA_8_BIT = 7;
const CF_INDEXED_1_BIT = 8;
const CF_INDEXED_2_BIT = 9;
const CF_INDEXED_4_BIT = 10;
const CF_INDEXED_8_BIT = 11;
const CF_RAW = 12;
const CF_RAW_ALPHA = 13;
const CF_RAW_CHROMA = 12;
const CF_TRUE_COLOR = 100; /*Helper formats is C arrays contains all treu color formats (usin in "download")*/
const CF_TRUE_COLOR_ALPHA = 101;
const CF_TRUE_COLOR_CHROMA = 102;
/**
* @param path the image file
* @param real_name the real image file name (different in online mode)
* @param out_name name of the output file
* @param dith 1: dither enabled; 0: disabled
* @param cf color format
*/
function __construct ($path, $real_name,$output, $out_name ,$dith) {
$this->dith = $dith;
$this->out_name = $out_name;
$this->path = $path;
$this->output_dir = $output;
$size = getimagesize($path);
$this->w = $size[0];
$this->h = $size[1];
$ext = pathinfo($real_name, PATHINFO_EXTENSION);
if(!strcmp(strtolower($ext), "png")) $this->img = imagecreatefrompng($path);
else if(!strcmp(strtolower($ext), "bmp")) $this->img = imagecreatefrombmp($path);
else if(!strcmp(strtolower($ext), "jpg")) $this->img = imagecreatefromjpeg($path);
else if(!strcmp(strtolower($ext), "jpeg")) $this->img = imagecreatefromjpeg($path);
else {
echo("$ext is a not supported image type. use png, jpg, jpeg or bmp");
exit(1);
}
$this->r_earr = array(); /*Classification error for next row of pixels*/
$this->g_earr = array();
$this->b_earr = array();
if($this->dith) {
for($i = 0; $i < $this->w + 2; ++$i){
$this->r_earr[$i] = 0;
$this->g_earr[$i] = 0;
$this->b_earr[$i] = 0;
}
}
$this->r_nerr = 0; /*Classification error for next pixel*/
$this->g_nerr = 0;
$this->b_nerr = 0;
}
function convert($cf, $alpha = 0) {
$this->cf = $cf;
$this->d_out = array();
$this->alpha = $alpha;
if($this->cf == self::CF_RAW || $this->cf == self::CF_RAW_ALPHA || $this->cf == self::CF_RAW_CHROMA) {
$myfile = fopen($this->path, "r") or die("Unable to open file!");
$this->d_out = unpack('C*', fread($myfile, filesize($this->path)));
fclose($myfile);
return;
}
$palette_size = 0;
if($this->cf == self::CF_INDEXED_1_BIT) $palette_size = 2;
if($this->cf == self::CF_INDEXED_2_BIT) $palette_size = 4;
if($this->cf == self::CF_INDEXED_4_BIT) $palette_size = 16;
if($this->cf == self::CF_INDEXED_8_BIT) $palette_size = 256;
if($palette_size) {
$img_tmp = imagecreatetruecolor($this->w, $this->h);
imagecopy ($img_tmp, $this->img, 0 , 0 , 0 , 0, $this->w , $this->h);
imagetruecolortopalette($this->img, false, $palette_size);
$real_palette_size = imagecolorstotal($this->img); /*The real number of colos in the image's palette*/
for($i = 0; $i < $palette_size; $i++) {
if($i < $real_palette_size) {
$c = imagecolorsforindex ($this->img , $i);
array_push($this->d_out, $c['blue'], $c['green'], $c['red'], 0xFF);
} else {
array_push($this->d_out, 0xFF, 0xFF, 0xFF, 0xFF);
}
}
}
/*Convert all the pixels*/
for($y = 0; $y < $this->h; $y++) {
$this->dith_reset();
for($x = 0; $x < $this->w; ++$x){
$this->conv_px($x, $y);
}
}
/*Revert the original image if it was converted to indexed*/
if($palette_size) {
imagecopy ($this->img, $img_tmp, 0 , 0 , 0 , 0 , $this->w , $this->h);
}
}
function format_to_c_array() {
$c_array = "";
$i = 0;
$y_end = $this->h;
$x_end = $this->w;
if($this->cf == self::CF_TRUE_COLOR_332) {
$c_array .= "\n#if LV_COLOR_DEPTH == 1 || LV_COLOR_DEPTH == 8";
if(!$this->alpha) $c_array .= "\n /*Pixel format: Red: 3 bit, Green: 3 bit, Blue: 2 bit*/";
else $c_array .= "\n /*Pixel format: Alpha 8 bit, Red: 3 bit, Green: 3 bit, Blue: 2 bit*/";
} else if($this->cf == self::CF_TRUE_COLOR_565) {
$c_array .= "\n#if LV_COLOR_DEPTH == 16 && LV_COLOR_16_SWAP == 0";
if(!$this->alpha) $c_array .= "\n /*Pixel format: Red: 5 bit, Green: 6 bit, Blue: 5 bit*/";
else $c_array .= "\n /*Pixel format: Alpha 8 bit, Red: 5 bit, Green: 6 bit, Blue: 5 bit*/";
} else if($this->cf == self::CF_TRUE_COLOR_565_SWAP) {
$c_array .= "\n#if LV_COLOR_DEPTH == 16 && LV_COLOR_16_SWAP != 0";
if(!$this->alpha) $c_array .= "\n /*Pixel format: Red: 5 bit, Green: 6 bit, Blue: 5 bit BUT the 2 bytes are swapped*/";
else $c_array .= "\n /*Pixel format: Alpha 8 bit, Red: 5 bit, Green: 6 bit, Blue: 5 bit BUT the 2 color bytes are swapped*/";
} else if($this->cf == self::CF_TRUE_COLOR_888) {
$c_array .= "\n#if LV_COLOR_DEPTH == 32";
if(!$this->alpha) $c_array .= "\n /*Pixel format: Fix 0xFF: 8 bit, Red: 8 bit, Green: 8 bit, Blue: 8 bit*/";
else "\n /*Pixel format: Alpha 8 bit, Red: 8 bit, Green: 8 bit, Blue: 8 bit*/";
} else if($this->cf == self::CF_INDEXED_1_BIT) {
$c_array .= "\n";
for($p = 0; $p < 2; $p ++) {
$c_array .= " 0x" . str_pad(dechex($this->d_out[$p * 4 + 0]), 2, '0', STR_PAD_LEFT) . ", ";
$c_array .= "0x" . str_pad(dechex($this->d_out[$p * 4 + 1]), 2, '0', STR_PAD_LEFT) . ", ";
$c_array .= "0x" . str_pad(dechex($this->d_out[$p * 4 + 2]), 2, '0', STR_PAD_LEFT) . ", ";
$c_array .= "0x" . str_pad(dechex($this->d_out[$p * 4 + 3]), 2, '0', STR_PAD_LEFT) . ", ";
$c_array .= "\t/*Color of index $p*/\n";
}
$i = $p * 4;
}
else if($this->cf == self::CF_INDEXED_2_BIT) {
$c_array .= "\n";
for($p = 0; $p < 4; $p ++) {
$c_array .= " 0x" . str_pad(dechex($this->d_out[$p * 4 + 0]), 2, '0', STR_PAD_LEFT) . ", ";
$c_array .= "0x" . str_pad(dechex($this->d_out[$p * 4 + 1]), 2, '0', STR_PAD_LEFT) . ", ";
$c_array .= "0x" . str_pad(dechex($this->d_out[$p * 4 + 2]), 2, '0', STR_PAD_LEFT) . ", ";
$c_array .= "0x" . str_pad(dechex($this->d_out[$p * 4 + 3]), 2, '0', STR_PAD_LEFT) . ", ";
$c_array .= "\t/*Color of index $p*/\n";
}
$i = $p * 4;
}
else if($this->cf == self::CF_INDEXED_4_BIT) {
$c_array .= "\n";
for($p = 0; $p < 16; $p ++) {
$c_array .= " 0x" . str_pad(dechex($this->d_out[$p * 4 + 0]), 2, '0', STR_PAD_LEFT) . ", ";
$c_array .= "0x" . str_pad(dechex($this->d_out[$p * 4 + 1]), 2, '0', STR_PAD_LEFT) . ", ";
$c_array .= "0x" . str_pad(dechex($this->d_out[$p * 4 + 2]), 2, '0', STR_PAD_LEFT) . ", ";
$c_array .= "0x" . str_pad(dechex($this->d_out[$p * 4 + 3]), 2, '0', STR_PAD_LEFT) . ", ";
$c_array .= "\t/*Color of index $p*/\n";
}
$i = $p * 4;
}
else if($this->cf == self::CF_INDEXED_8_BIT) {
$c_array .= "\n";
for($p = 0; $p < 256; $p ++) {
$c_array .= " 0x" . str_pad(dechex($this->d_out[$p * 4 + 0]), 2, '0', STR_PAD_LEFT) . ", ";
$c_array .= "0x" . str_pad(dechex($this->d_out[$p * 4 + 1]), 2, '0', STR_PAD_LEFT) . ", ";
$c_array .= "0x" . str_pad(dechex($this->d_out[$p * 4 + 2]), 2, '0', STR_PAD_LEFT) . ", ";
$c_array .= "0x" . str_pad(dechex($this->d_out[$p * 4 + 3]), 2, '0', STR_PAD_LEFT) . ", ";
$c_array .= "\t/*Color of index $p*/\n";
}
$i = $p * 4;
}
else if($this->cf == self::CF_RAW || $this->cf == self::CF_RAW_ALPHA || $this->cf == self::CF_RAW_CHROMA) {
$y_end = 1;
$x_end = count($this->d_out);
$i = 1;
}
for($y = 0; $y < $y_end; $y++) {
$c_array .= "\n ";
for($x = 0; $x < $x_end; $x++) {
if($this->cf == self::CF_TRUE_COLOR_332) {
$c_array .= "0x" . str_pad(dechex($this->d_out[$i]), 2, '0', STR_PAD_LEFT) . ", "; $i++;
if($this->alpha) {
$c_array .= "0x" . str_pad(dechex($this->d_out[$i]), 2, '0', STR_PAD_LEFT) . ", ";
$i++;
}
}
else if($this->cf == self::CF_TRUE_COLOR_565 || $this->cf == self::CF_TRUE_COLOR_565_SWAP) {
$c_array .= "0x" . str_pad(dechex($this->d_out[$i]), 2, '0', STR_PAD_LEFT) . ", "; $i++;
$c_array .= "0x" . str_pad(dechex($this->d_out[$i]), 2, '0', STR_PAD_LEFT) . ", "; $i++;
if($this->alpha) {
$c_array .= "0x" . str_pad(dechex($this->d_out[$i]), 2, '0', STR_PAD_LEFT) . ", ";
$i++;
}
}
else if($this->cf == self::CF_TRUE_COLOR_888) {
$c_array .= "0x" . str_pad(dechex($this->d_out[$i]), 2, '0', STR_PAD_LEFT) . ", "; $i++;
$c_array .= "0x" . str_pad(dechex($this->d_out[$i]), 2, '0', STR_PAD_LEFT) . ", "; $i++;
$c_array .= "0x" . str_pad(dechex($this->d_out[$i]), 2, '0', STR_PAD_LEFT) . ", "; $i++;
$c_array .= "0x" . str_pad(dechex($this->d_out[$i]), 2, '0', STR_PAD_LEFT) . ", "; $i++;
}
else if($this->cf == self::CF_ALPHA_1_BIT || $this->cf == self::CF_INDEXED_1_BIT) {
if(($x & 0x7) == 0) {
$c_array .= "0x" . str_pad(dechex($this->d_out[$i]), 2, '0', STR_PAD_LEFT) . ", ";
$i++;
}
}
else if($this->cf == self::CF_ALPHA_2_BIT || $this->cf == self::CF_INDEXED_2_BIT) {
if(($x & 0x3) == 0) {
$c_array .= "0x" . str_pad(dechex($this->d_out[$i]), 2, '0', STR_PAD_LEFT) . ", ";
$i++;
}
}
else if($this->cf == self::CF_ALPHA_4_BIT || $this->cf == self::CF_INDEXED_4_BIT) {
if(($x & 0x1) == 0) {
$c_array .= "0x" . str_pad(dechex($this->d_out[$i]), 2, '0', STR_PAD_LEFT) . ", ";
$i++;
}
}
else if($this->cf == self::CF_ALPHA_8_BIT || $this->cf == self::CF_INDEXED_8_BIT) {
$c_array .= "0x" . str_pad(dechex($this->d_out[$i]), 2, '0', STR_PAD_LEFT) . ", ";
$i++;
}
else if($this->cf == self::CF_RAW || $this->cf == self::CF_RAW_ALPHA || $this->cf == self::CF_RAW_CHROMA) {
$c_array .= "0x" . str_pad(dechex($this->d_out[$i]), 2, '0', STR_PAD_LEFT) . ", ";
if($i != 0 && (($i % 16) == 0)) $c_array .= "\n ";
$i++;
}
}
}
if($this->cf == self::CF_TRUE_COLOR_332 || $this->cf == self::CF_TRUE_COLOR_565 || $this->cf == self::CF_TRUE_COLOR_565_SWAP || $this->cf == self::CF_TRUE_COLOR_888) {
$c_array .= "\n#endif";
}
return $c_array;
}
function get_c_header() {
$c_header =
"#include \"lvgl/lvgl.h\"
#ifndef LV_ATTRIBUTE_MEM_ALIGN
#define LV_ATTRIBUTE_MEM_ALIGN
#endif
";
$attr_name = "LV_ATTRIBUTE_IMG_" . strtoupper($this->out_name);
$c_header .=
"#ifndef $attr_name
#define $attr_name
#endif
const LV_ATTRIBUTE_MEM_ALIGN $attr_name uint8_t " . $this->out_name . "_map[] = {";
return $c_header;
}
function get_c_footer($cf) {
$c_footer =
"\n};\n
const lv_img_dsc_t " . $this->out_name . " = {
.header.always_zero = 0,
.header.w = " . $this->w . ",
.header.h = " . $this->h . ",\n";
if($cf == self::CF_TRUE_COLOR) $c_footer .= " .data_size = " . $this->w * $this->h . " * LV_COLOR_SIZE / 8,\n .header.cf = LV_IMG_CF_TRUE_COLOR,";
else if($cf == self::CF_TRUE_COLOR_ALPHA) $c_footer .= " .data_size = " . $this->w * $this->h . " * LV_IMG_PX_SIZE_ALPHA_BYTE,\n .header.cf = LV_IMG_CF_TRUE_COLOR_ALPHA,";
else if($cf == self::CF_TRUE_COLOR_CHROMA) $c_footer .= " .data_size = " . $this->w * $this->h . " * LV_COLOR_SIZE / 8,\n .header.cf = LV_IMG_CF_TRUE_COLOR_CHROMA_KEYED,";
else if($cf == self::CF_ALPHA_1_BIT) $c_footer .= " .data_size = " . count($this->d_out) . ",\n .header.cf = LV_IMG_CF_ALPHA_1BIT,";
else if($cf == self::CF_ALPHA_2_BIT) $c_footer .= " .data_size = " . count($this->d_out) . ",\n .header.cf = LV_IMG_CF_ALPHA_2BIT,";
else if($cf == self::CF_ALPHA_4_BIT) $c_footer .= " .data_size = " . count($this->d_out) . ",\n .header.cf = LV_IMG_CF_ALPHA_4BIT,";
else if($cf == self::CF_ALPHA_8_BIT) $c_footer .= " .data_size = " . count($this->d_out) . ",\n .header.cf = LV_IMG_CF_ALPHA_8BIT,";
else if($cf == self::CF_INDEXED_1_BIT) $c_footer .= " .data_size = " . count($this->d_out) . ",\n .header.cf = LV_IMG_CF_INDEXED_1BIT,";
else if($cf == self::CF_INDEXED_2_BIT) $c_footer .= " .data_size = " . count($this->d_out) . ",\n .header.cf = LV_IMG_CF_INDEXED_2BIT,";
else if($cf == self::CF_INDEXED_4_BIT) $c_footer .= " .data_size = " . count($this->d_out) . ",\n .header.cf = LV_IMG_CF_INDEXED_4BIT,";
else if($cf == self::CF_INDEXED_8_BIT) $c_footer .= " .data_size = " . count($this->d_out) . ",\n .header.cf = LV_IMG_CF_INDEXED_8BIT,";
else if($cf == self::CF_RAW) $c_footer .= " .data_size = " . count($this->d_out) . ",\n .header.cf = LV_IMG_CF_RAW,";
else if($cf == self::CF_RAW_ALPHA) $c_footer .= " .data_size = " . count($this->d_out) . ",\n .header.cf = LV_IMG_CF_RAW_ALPHA,";
else if($cf == self::CF_RAW_CHROMA) $c_footer .= " .data_size = " . count($this->d_out) . ",\n .header.cf = LV_IMG_CF_RAW_CHROMA_KEYED,";
$c_footer .= "\n .data = " . $this->out_name . "_map,
};\n";
return $c_footer;
}
function download_c($name, $cf = -1, $content = ""){
global $offline;
if(strlen($content) < 1) {
$content = $this->format_to_c_array();
}
if($cf < 0) $cf = $this->cf;
$out = $this->get_c_header() . $content . "" . $this->get_c_footer($cf);
$name = $name . ".c";
if($offline){
$name = $this->output_dir.$name;
$file = fopen($name, "w");
fwrite($file, $out);
fclose($file);
}
else{
header('Content-Type: application/text');
header('Content-disposition: attachment; filename='.$name);
header('Content-Length: ' . strlen($out));
echo($out);
}
}
function download_bin($name, $cf = -1, $content = 0){
global $offline;
if($content == 0) {
$content = $this->d_out;
}
if($cf < 0) $cf = $this->cf;
$name .= ".bin";
$lv_cf = 4; /*Color format in LittlevGL*/
switch($cf) {
case self::CF_TRUE_COLOR:
$lv_cf = 4; break;
case self::CF_TRUE_COLOR_ALPHA:
$lv_cf = 5; break;
case self::CF_TRUE_COLOR_CHROMA:
$lv_cf = 6; break;
case self::CF_INDEXED_1_BIT:
$lv_cf = 7; break;
case self::CF_INDEXED_2_BIT:
$lv_cf = 8; break;
case self::CF_INDEXED_4_BIT:
$lv_cf = 9; break;
case self::CF_INDEXED_8_BIT:
$lv_cf = 10; break;
case self::CF_ALPHA_1_BIT:
$lv_cf = 11; break;
case self::CF_ALPHA_2_BIT:
$lv_cf = 12; break;
case self::CF_ALPHA_4_BIT:
$lv_cf = 13; break;
case self::CF_ALPHA_8_BIT:
$lv_cf = 14; break;
}
$header = $lv_cf + ($this->w << 10) + ($this->h << 21);
$header_bin = pack("V", $header);
$content = pack("C*", ...$content);
if($offline){
$name = $this->output_dir.$name;
$file = fopen($name, "w");
fwrite($file, $header_bin);
fwrite($file, $content);
fclose($file);
}
else{
$len = strlen($content) + 4;
header('Content-Type: application/text');
header('Content-disposition: attachment; filename='.$name);
header('Content-Length:' . $len);
echo($header_bin[0]);
echo($header_bin[1]);
echo($header_bin[2]);
echo($header_bin[3]);
echo($content);
}
}
private function conv_px($x, $y) {
$c = imagecolorat($this->img, $x, $y);
if($this->alpha){
$a = ($c & 0xff000000) >> 23; /*Alpha is 7 bit*/
if($a & 0x02) $a |= 0x01; /*Repeate the last bit: 0000000 -> 00000000; 1111110 -> 11111111*/
$a = 255 - $a;
} else {
$a = 0xff;
}
$r = ($c & 0x00ff0000) >> 16;
$g = ($c & 0x0000ff00) >> 8;
$b = ($c & 0x000000ff) >> 0;
$this->dith_next($r, $g, $b, $x);
if($this->cf == self::CF_TRUE_COLOR_332) {
$c8 = ($this->r_act) | ($this->g_act >> 3) | ($this->b_act >> 6); //RGB332
array_push($this->d_out, $c8);
if($this->alpha) array_push($this->d_out, $a);
} else if($this->cf == self::CF_TRUE_COLOR_565) {
$c16 = (($this->r_act) << 8) | (($this->g_act) << 3) | (($this->b_act) >> 3); //RGR565
array_push($this->d_out, $c16 & 0xFF);
array_push($this->d_out, ($c16 >> 8) & 0xFF);
if($this->alpha) array_push($this->d_out, $a);
} else if($this->cf == self::CF_TRUE_COLOR_565_SWAP) {
$c16 = (($this->r_act) << 8) | (($this->g_act) << 3) | (($this->b_act) >> 3); //RGR565
array_push($this->d_out, ($c16 >> 8) & 0xFF);
array_push($this->d_out, $c16 & 0xFF);
if($this->alpha) array_push($this->d_out, $a);
} else if($this->cf == self::CF_TRUE_COLOR_888) {
array_push($this->d_out, $this->b_act);
array_push($this->d_out, $this->g_act);
array_push($this->d_out, $this->r_act);
array_push($this->d_out, $a);
} else if($this->cf == self::CF_ALPHA_1_BIT) {
$w = $this->w >> 3;
if($this->w & 0x07) $w++;
$p = $w * $y + ($x >> 3);
if(!isset($this->d_out[$p])) $this->d_out[$p] = 0; /*Clear the bits first*/
if($a > 0x80) {
$this->d_out[$p] |= 1 << (7 - ($x & 0x7));
}
}
else if($this->cf == self::CF_ALPHA_2_BIT) {
$w = $this->w >> 2;
if($this->w & 0x03) $w++;
$p = $w * $y + ($x >> 2);
if(!isset($this->d_out[$p])) $this->d_out[$p] = 0; /*Clear the bits first*/
$this->d_out[$p] |= ($a >> 6) << (6 - (($x & 0x3) * 2));
}
else if($this->cf == self::CF_ALPHA_4_BIT) {
$w = $this->w >> 1;
if($this->w & 0x01) $w++;
$p = $w * $y + ($x >> 1);
if(!isset($this->d_out[$p])) $this->d_out[$p] = 0; /*Clear the bits first*/
$this->d_out[$p] |= ($a >> 4) << (4 - (($x & 0x1) * 4));
}
else if($this->cf == self::CF_ALPHA_8_BIT) {
$p = $this->w * $y + $x;
$this->d_out[$p] = $a;
}
else if($this->cf == self::CF_INDEXED_1_BIT) {
$w = $this->w >> 3;
if($this->w & 0x07) $w++;
$p = $w * $y + ($x >> 3) + 8; /* +8 for the palette*/
if(!isset($this->d_out[$p])) $this->d_out[$p] = 0; /*Clear the bits first*/
$this->d_out[$p] |= ($c & 0x1) << (7 - ($x & 0x7));
}
else if($this->cf == self::CF_INDEXED_2_BIT) {
$w = $this->w >> 2;
if($this->w & 0x03) $w++;
$p = $w * $y + ($x >> 2) + 16; /* +16 for the palette*/
if(!isset($this->d_out[$p])) $this->d_out[$p] = 0; /*Clear the bits first*/
$this->d_out[$p] |= ($c & 0x3) << (6 - (($x & 0x3) * 2));
}
else if($this->cf == self::CF_INDEXED_4_BIT) {
$w = $this->w >> 1;
if($this->w & 0x01) $w++;
$p = $w * $y + ($x >> 1) + 64; /* +64 for the palette*/
if(!isset($this->d_out[$p])) $this->d_out[$p] = 0; /*Clear the bits first*/
$this->d_out[$p] |= ($c & 0xF) << (4 - (($x & 0x1) * 4));
}
else if($this->cf == self::CF_INDEXED_8_BIT) {
$p = $this->w * $y + $x + 1024; /* +1024 for the palette*/
$this->d_out[$p] = $c & 0xFF;
}
}
private function dith_reset() {
if($this->dith){
$this->r_nerr = 0;
$this->g_nerr = 0;
$this->b_nerr = 0;
}
}
private function dith_next($r, $g, $b, $x) {
if($this->dith){
$this->r_act = $r + $this->r_nerr + $this->r_earr[$x+1];
$this->r_earr[$x+1] = 0;
$this->g_act = $g + $this->g_nerr + $this->g_earr[$x+1];
$this->g_earr[$x+1] = 0;
$this->b_act = $b + $this->b_nerr + $this->b_earr[$x+1];
$this->b_earr[$x+1] = 0;
if($this->cf == self::CF_TRUE_COLOR_332) {
$this->r_act = $this->classify_pixel($this->r_act, 3);
$this->g_act = $this->classify_pixel($this->g_act, 3);
$this->b_act = $this->classify_pixel($this->b_act, 2);
if($this->r_act > 0xE0) $this->r_act = 0xE0;
if($this->g_act > 0xE0) $this->g_act = 0xE0;
if($this->b_act > 0xC0) $this->b_act = 0xC0;
} else if($this->cf == self::CF_TRUE_COLOR_565 || $this->cf == self::CF_TRUE_COLOR_565_SWAP) {
$this->r_act = $this->classify_pixel($this->r_act, 5);
$this->g_act = $this->classify_pixel($this->g_act, 6);
$this->b_act = $this->classify_pixel($this->b_act, 5);
if($this->r_act > 0xF8) $this->r_act = 0xF8;
if($this->g_act > 0xFC) $this->g_act = 0xFC;
if($this->b_act > 0xF8) $this->b_act = 0xF8;
} else if($this->cf == self::CF_TRUE_COLOR_888) {
$this->r_act = $this->classify_pixel($this->r_act, 8);
$this->g_act = $this->classify_pixel($this->g_act, 8);
$this->b_act = $this->classify_pixel($this->b_act, 8);
if($this->r_act > 0xFF) $this->r_act = 0xFF;
if($this->g_act > 0xFF) $this->g_act = 0xFF;
if($this->b_act > 0xFF) $this->b_act = 0xFF;
}
$this->r_err = $r - $this->r_act;
$this->g_err = $g - $this->g_act;
$this->b_err = $b - $this->b_act;
$this->r_nerr = round((7 * $this->r_err) / 16);
$this->g_nerr = round((7 * $this->g_err) / 16);
$this->b_nerr = round((7 * $this->b_err) / 16);
$this->r_earr[$x] += round((3 * $this->r_err) / 16);
$this->g_earr[$x] += round((3 * $this->g_err) / 16);
$this->b_earr[$x] += round((3 * $this->b_err) / 16);
$this->r_earr[$x+1] += round((5 * $this->r_err) / 16);
$this->g_earr[$x+1] += round((5 * $this->g_err) / 16);
$this->b_earr[$x+1] += round((5 * $this->b_err) / 16);
$this->r_earr[$x+2] += round($this->r_err / 16);
$this->g_earr[$x+2] += round($this->g_err / 16);
$this->b_earr[$x+2] += round($this->b_err / 16);
}
else{
if($this->cf == self::CF_TRUE_COLOR_332) {
$this->r_act = $this->classify_pixel($r, 3);
$this->g_act = $this->classify_pixel($g, 3);
$this->b_act = $this->classify_pixel($b, 2);
if($this->r_act > 0xE0) $this->r_act = 0xE0;
if($this->g_act > 0xE0) $this->g_act = 0xE0;
if($this->b_act > 0xC0) $this->b_act = 0xC0;
} else if($this->cf == self::CF_TRUE_COLOR_565 || $this->cf == self::CF_TRUE_COLOR_565_SWAP) {
$this->r_act = $this->classify_pixel($r, 5);
$this->g_act = $this->classify_pixel($g, 6);
$this->b_act = $this->classify_pixel($b, 5);
if($this->r_act > 0xF8) $this->r_act = 0xF8;
if($this->g_act > 0xFC) $this->g_act = 0xFC;
if($this->b_act > 0xF8) $this->b_act = 0xF8;
} else if($this->cf == self::CF_TRUE_COLOR_888) {
$this->r_act = $this->classify_pixel($r, 8);
$this->g_act = $this->classify_pixel($g, 8);
$this->b_act = $this->classify_pixel($b, 8);
if($this->r_act > 0xFF) $this->r_act = 0xFF;
if($this->g_act > 0xFF) $this->g_act = 0xFF;
if($this->b_act > 0xFF) $this->b_act = 0xFF;
}
}
}
private function classify_pixel($value, $bits){
$tmp = 1 << (8 - $bits);
$val = round($value / $tmp, 0, PHP_ROUND_HALF_DOWN) * $tmp;
if($val < 0) $val = 0;
return $val;
}
}
$offline = 0;
if (!isset($_SERVER["HTTP_HOST"])) {
parse_str($argv[1], $_POST);
$offline = 1;
}
if($offline == 0){
/*The scripts runs ONLINE (likely on littelvgl.com)*/
header("Cache-Control: no-store, no-cache, must-revalidate, max-age=0");
header("Cache-Control: post-check=0, pre-check=0", false);
header("Pragma: no-cache");
$img_file = $_FILES["img_file"]["tmp_name"];
$img_file_name = $_FILES["img_file"]["name"];
$output_name = $_POST["name"];
$cf = $_POST["cf"];
$format = $_POST["format"];
$dith = $_POST["dith"];
}
else{
/*The scripts runs OFFLINE (likely in command)*/
if(isset($_POST["name"])){
$output_name = $_POST["name"];
echo"Convert:".$output_name;
}
else{
echo("Mising Name\n");
exit(0);
}
if(isset($_POST["img"])){
$img_file = $_POST["img"];
$img_file_name = $_POST["img"];
echo "\nimg=".$img_file;
}
else{
echo("Mising image file\n");
exit(0);
}
if(isset($_POST["format"])){
$format = $_POST["format"];
}
else{
$format = "c_array";
}
if(isset($_POST["dith"])){
$dith = $_POST["dith"];
}
else {
$dith = 0;
}
if(isset($_POST["outdir"]))
{
$outdir = $_POST["outdir"];
}else
{
$outdir = "./";
echo "\noutdir=".$outdir;
}
if(isset($_POST["cf"])){
$cf = $_POST["cf"];
}
else {
$cf = "true_color";
}
}
$conv = new Converter($img_file, $img_file_name,$outdir, $output_name, $dith);
if(!strcmp($format, "c_array")) {
if(!strcmp($cf, "true_color") || !strcmp($cf, "true_color_alpha") || !strcmp($cf, "true_color_chroma")) {
$alpha = 0;
if(!strcmp($cf, "true_color_alpha")) $alpha = 1;
$conv->convert($conv::CF_TRUE_COLOR_332, $alpha);
$c_332 = $conv->format_to_c_array();
$conv->convert($conv::CF_TRUE_COLOR_565, $alpha);
$c_565 = $conv->format_to_c_array();
$conv->convert($conv::CF_TRUE_COLOR_565_SWAP, $alpha);
$c_565_swap = $conv->format_to_c_array();
$conv->convert($conv::CF_TRUE_COLOR_888, $alpha);
$c_888 = $conv->format_to_c_array();
$c_res = $c_332 . $c_565 . $c_565_swap . $c_888;
if(!strcmp($cf, "true_color")) $conv->download_c($conv->out_name, $conv::CF_TRUE_COLOR, $c_res);
if(!strcmp($cf, "true_color_alpha")) $conv->download_c($conv->out_name, $conv::CF_TRUE_COLOR_ALPHA, $c_res);
if(!strcmp($cf, "true_color_chroma")) $conv->download_c($conv->out_name, $conv::CF_TRUE_COLOR_CHROMA, $c_res);
}
else if(!strcmp($cf, "alpha_1")) {
$conv->convert($conv::CF_ALPHA_1_BIT, 1);
$conv->download_c($conv->out_name);
}
else if(!strcmp($cf, "alpha_2")) {
$conv->convert($conv::CF_ALPHA_2_BIT, 1);
$conv->download_c($conv->out_name);
}
else if(!strcmp($cf, "alpha_4")) {
$conv->convert($conv::CF_ALPHA_4_BIT, 1);
$conv->download_c($conv->out_name);
}
else if(!strcmp($cf, "alpha_8")) {
$conv->convert($conv::CF_ALPHA_8_BIT, 1);
$conv->download_c($conv->out_name);
}
else if(!strcmp($cf, "indexed_1")) {
$conv->convert($conv::CF_INDEXED_1_BIT);
$conv->download_c($conv->out_name);
}
else if(!strcmp($cf, "indexed_2")) {
$conv->convert($conv::CF_INDEXED_2_BIT);
$conv->download_c($conv->out_name);
}
else if(!strcmp($cf, "indexed_4")) {
$conv->convert($conv::CF_INDEXED_4_BIT);
$conv->download_c($conv->out_name);
}
else if(!strcmp($cf, "indexed_8")) {
$conv->convert($conv::CF_INDEXED_8_BIT);
$conv->download_c($conv->out_name);
}
else if(!strcmp($cf, "raw")) {
$conv->convert($conv::CF_RAW);
$conv->download_c($conv->out_name);
}
else if(!strcmp($cf, "raw_alpha")) {
$conv->convert($conv::CF_RAW_ALPHA, 1);
$conv->download_c($conv->out_name);
}
else if(!strcmp($cf, "raw_chroma")) {
$conv->convert($conv::CF_RAW_CHROMA);
$conv->download_c($conv->out_name);
}
}
/*Binary download*/
else {
if(!strcmp($cf, "true_color") || !strcmp($cf, "true_color_alpha") || !strcmp($cf, "true_color_chroma")) {
$alpha = 0;
if(!strcmp($cf, "true_color_alpha")) $alpha = 1;
if (!strcmp($format, "bin_332")) $conv->convert($conv::CF_TRUE_COLOR_332, $alpha);
else if (!strcmp($format, "bin_565")) $conv->convert($conv::CF_TRUE_COLOR_565, $alpha);
else if (!strcmp($format, "bin_565_swap")) $conv->convert($conv::CF_TRUE_COLOR_565_SWAP, $alpha);
else if (!strcmp($format, "bin_888")) $conv->convert($conv::CF_TRUE_COLOR_888, $alpha);
else {
echo("Unknown output file format: $format");
exit(1);
}
if(!strcmp($cf, "true_color")) $conv->download_bin($conv->out_name, $conv::CF_TRUE_COLOR);
if(!strcmp($cf, "true_color_alpha")) $conv->download_bin($conv->out_name, $conv::CF_TRUE_COLOR_ALPHA);
if(!strcmp($cf, "true_color_chroma")) $conv->download_bin($conv->out_name, $conv::CF_TRUE_COLOR_CHROMA);
}
else if(!strcmp($cf, "alpha_1")) {
$conv->convert($conv::CF_ALPHA_1_BIT, 1);
$conv->download_bin($conv->out_name);
}
else if(!strcmp($cf, "alpha_2")) {
$conv->convert($conv::CF_ALPHA_2_BIT, 1);
$conv->download_bin($conv->out_name);
}
else if(!strcmp($cf, "alpha_4")) {
$conv->convert($conv::CF_ALPHA_4_BIT, 1);
$conv->download_bin($conv->out_name);
}
else if(!strcmp($cf, "alpha_8")) {
$conv->convert($conv::CF_ALPHA_8_BIT, 1);
$conv->download_bin($conv->out_name);
}
else if(!strcmp($cf, "indexed_1")) {
$conv->convert($conv::CF_INDEXED_1_BIT);
$conv->download_bin($conv->out_name);
}
else if(!strcmp($cf, "indexed_2")) {
$conv->convert($conv::CF_INDEXED_2_BIT);
$conv->download_bin($conv->out_name);
}
else if(!strcmp($cf, "indexed_4")) {
$conv->convert($conv::CF_INDEXED_4_BIT);
$conv->download_bin($conv->out_name);
}
else if(!strcmp($cf, "indexed_8")) {
$conv->convert($conv::CF_INDEXED_8_BIT);
$conv->download_bin($conv->out_name);
}
}
/*
$c_array .= "#include <stdint.h>
#include \"lv_conf.h\"
#include \"lvgl/lv_draw/lv_draw.h\""; */
//download("test", $c_565);
?>
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