diff --git a/index.php b/index.php
index f9bef567b861e1be12ed3dcded7deca36613df30..96e05a2cb80c98179adf00d4ce65b2711b761eea 100644
--- a/index.php
+++ b/index.php
@@ -1,7 +1,8 @@
<?php
-define( 'PHOTON__ALLOW_ANY_EXTENSION', 1 );
-define( 'PHOTON__ALLOW_QUERY_STRINGS', 2 );
+define( 'PHOTON__ALLOW_QUERY_STRINGS', 1 );
+define( 'PHOTON__DEFAULT_MAX_QUALITY', 89 );
+define( 'PHOTON__PNG_MAX_QUALITY', 80 );
require dirname( __FILE__ ) . '/plugin.php';
if ( file_exists( dirname( __FILE__ ) . '/../config.php' ) )
@@ -13,8 +14,10 @@ else if ( file_exists( dirname( __FILE__ ) . '/config.php' ) )
$allowed_functions = apply_filters( 'allowed_functions', array(
// 'q' => RESERVED
// 'zoom' => global resolution multiplier (argument filter)
- 'h' => 'setheight', // done
- 'w' => 'setwidth', // done
+// 'quality' => sets the quality of JPEG images during processing
+// 'strip => strips JPEG images of exif, icc or all "extra" data (params: info,color,all)
+ 'h' => 'set_height', // done
+ 'w' => 'set_width', // done
'crop' => 'crop', // done
'resize' => 'resize_and_crop', // done
'fit' => 'fit_in_box', // done
@@ -47,24 +50,37 @@ $remote_image_max_size = apply_filters( 'remote_image_max_size', 55 * 1024 * 102
/* Array of domains exceptions
* Keys are domain name
* Values are bitmasks with the following options:
- * PHOTON__ALLOW_ANY_EXTENSION: Allow any extension (including none) in the path of the URL
* PHOTON__ALLOW_QUERY_STRINGS: Append the string found in the 'q' query string parameter as the query string of the remote URL
*/
$origin_domain_exceptions = apply_filters( 'origin_domain_exceptions', array() );
// You can override this by defining it in config.php
if ( ! defined( 'PHOTON__UPSCALE_MAX_PIXELS' ) )
- define( 'PHOTON__UPSCALE_MAX_PIXELS', 1000 );
+ define( 'PHOTON__UPSCALE_MAX_PIXELS', 2000 );
+
+// Allow smaller upscales for GIFs, compared to the other image types
+if ( ! defined( 'PHOTON__UPSCALE_MAX_PIXELS_GIF' ) )
+ define( 'PHOTON__UPSCALE_MAX_PIXELS_GIF', 1000 );
require dirname( __FILE__ ) . '/libjpeg.php';
// Implicit configuration
-if ( file_exists( '/usr/local/bin/optipng' ) )
+if ( file_exists( '/usr/local/bin/optipng' ) && ! defined( 'DISABLE_IMAGE_OPTIMIZATIONS' ) )
define( 'OPTIPNG', '/usr/local/bin/optipng' );
else
define( 'OPTIPNG', false );
-if ( file_exists( '/usr/local/bin/jpegoptim' ) )
+if ( file_exists( '/usr/local/bin/pngquant' ) && ! defined( 'DISABLE_IMAGE_OPTIMIZATIONS' ) )
+ define( 'PNGQUANT', '/usr/local/bin/pngquant' );
+else
+ define( 'PNGQUANT', false );
+
+if ( file_exists( '/usr/local/bin/cwebp' ) && ! defined( 'DISABLE_IMAGE_OPTIMIZATIONS' ) )
+ define( 'CWEBP', '/usr/local/bin/cwebp' );
+else
+ define( 'CWEBP', false );
+
+if ( file_exists( '/usr/local/bin/jpegoptim' ) && ! defined( 'DISABLE_IMAGE_OPTIMIZATIONS' ) )
define( 'JPEGOPTIM', '/usr/local/bin/jpegoptim' );
else
define( 'JPEGOPTIM', false );
@@ -103,8 +119,8 @@ function zoom( $arguments, $function_name, $image ) {
$h = $image->getimageheight();
switch ( $function_name ) {
- case 'setheight' :
- case 'setwidth' :
+ case 'set_height' :
+ case 'set_width' :
$new_arguments = $arguments * $zoom;
if ( substr( $arguments, -1 ) == '%' )
$new_arguments .= '%';
@@ -176,7 +192,7 @@ function crop( &$image, $args ) {
}
/**
- * setheight - ( "h" function via the uri ) - resize the image to an explicit height, maintaining its aspect ratio
+ * set_height - ( "h" function via the uri ) - resize the image to an explicit height, maintaining its aspect ratio
*
* @param (resource)image the source gd image resource
* @param (string)args "/^[0-9]+%?$/" the new height in pixels, or as a percentage if suffixed with an %
@@ -184,7 +200,7 @@ function crop( &$image, $args ) {
*
* @return (resource) the resulting gs image resource
**/
-function setheight( &$image, $args, $upscale = false ) {
+function set_height( &$image, $args, $upscale = false ) {
$w = $image->getimagewidth();
$h = $image->getimageheight();
@@ -199,7 +215,7 @@ function setheight( &$image, $args, $upscale = false ) {
// New height is greater than original image, but we don't have permission to upscale
if ( $new_height > $h && ! $upscale )
return;
- // Sane limit when upscaling, defaults to 1000
+ // Sane limit when upscaling
if ( $new_height > $h && $upscale && $new_height > PHOTON__UPSCALE_MAX_PIXELS )
return;
@@ -213,7 +229,7 @@ function setheight( &$image, $args, $upscale = false ) {
}
/**
- * setwidth - ( "w" function via the uri ) - resize the image to an explicit width, maintaining its aspect ratio
+ * set_width - ( "w" function via the uri ) - resize the image to an explicit width, maintaining its aspect ratio
*
* @param (resource)image the source gd image resource
* @param (string)args "/^[0-9]+%?$/" the new width in pixels, or as a percentage if suffixed with an %
@@ -221,7 +237,7 @@ function setheight( &$image, $args, $upscale = false ) {
*
* @return (resource) the resulting gs image resource
**/
-function setwidth( &$image, $args, $upscale = false ) {
+function set_width( &$image, $args, $upscale = false ) {
$w = $image->getimagewidth();
$h = $image->getimageheight();
@@ -236,7 +252,7 @@ function setwidth( &$image, $args, $upscale = false ) {
// New height is greater than original image, but we don't have permission to upscale
if ( $new_width > $w && ! $upscale )
return;
- // Sane limit when upscaling, defaults to 1000
+ // Sane limit when upscaling
if ( $new_width > $w && $upscale && $new_width > PHOTON__UPSCALE_MAX_PIXELS )
return;
@@ -278,7 +294,7 @@ function fit_in_box( &$image, $args ) {
/**
* resize_and_crop - ("resize" function via the uri) - originally by Alex M.
*
- * Differs from setwidth, setheight, and crop in that you provide a width/height and it resizes to that and then crops off excess
+ * Differs from set_width, set_height, and crop in that you provide a width/height and it resizes to that and then crops off excess
*
* @param (resource) image the source gd image resource
* @param (string) args "w,h" width,height in pixels
@@ -298,23 +314,29 @@ function resize_and_crop( &$image, $args ) {
if ( 0 == $end_w || 0 == $end_h )
return;
+ if ( $end_w > $w && $end_w > PHOTON__UPSCALE_MAX_PIXELS )
+ return;
+
+ if ( $end_h > $h && $end_h > PHOTON__UPSCALE_MAX_PIXELS )
+ return;
+
$ratio_orig = $w / $h;
$ratio_end = $end_w / $end_h;
// If the original and new images are proportional (no cropping needed), just do a standard resize
if ( $ratio_orig == $ratio_end )
- setwidth( $image, $end_w, true );
+ set_width( $image, $end_w, true );
// If we need to crop off the sides
elseif ( $ratio_orig > $ratio_end ) {
- setheight( $image, $end_h, true );
+ set_height( $image, $end_h, true );
$x = floor( ( $image->getimagewidth() - $end_w ) / 2 );
crop( $image, "{$x}px,0px,{$end_w}px,{$end_h}px" );
}
// If we need to crop off the top/bottom
elseif ( $ratio_orig < $ratio_end ) {
- setwidth( $image, $end_w, true );
+ set_width( $image, $end_w, true );
$y = floor( ( $image->getimageheight() - $end_h ) / 2 );
crop( $image, "0px,{$y}px,{$end_w}px,{$end_h}px" );
}
@@ -640,10 +662,102 @@ function do_a_filter( $function_name, $arguments ) {
}
}
-function photon_cache_headers( $expires=63115200 ) {
+function photon_cache_headers( $image_url, $content_type = 'image/jpeg', $expires = 63115200 ) {
+ header( 'Last-Modified: ' . gmdate( 'D, d M Y H:i:s', time() ) . ' GMT' );
header( 'Expires: ' . gmdate( 'D, d M Y H:i:s', time() + $expires ) . ' GMT' );
header( 'Cache-Control: public, max-age='.$expires );
header( 'X-Content-Type-Options: nosniff' );
+ header( 'Link: <' . $image_url . '>; rel="canonical"' );
+ header( 'Content-Type: ' . $content_type );
+ // animated webp images are not much smaller than GIFs and take an age to convert,
+ // ignore them and do not affect caching with the Vary header.
+ if ( 'image/gif' != $content_type )
+ header( 'Vary: Accept' );
+}
+
+function serve_file( $url, $content_type, $filename, $bytes_saved ) {
+ photon_cache_headers( $url, $content_type );
+ $filesize = filesize( $filename );
+ header( 'ETag: "' . substr( md5( $filesize . '.' . time() ), 0, 16 ) . '"' );
+ header( 'Content-Length: ' . $filesize );
+ if ( defined( 'DISABLE_IMAGE_OPTIMIZATIONS' ) ) {
+ header( "X-Optim-Disabled: true" );
+ } else {
+ header( 'X-Bytes-Saved: ' . $bytes_saved );
+ }
+ $fp = fopen( $filename, 'r' );
+ register_shutdown_function( 'unlink', $filename );
+ fpassthru( $fp );
+}
+
+/**
+ * Compresses the PNG image using the best option available
+ *
+ * @param string $filename The file name of the temp image to compress
+ * @param int $quality The requested quality of the image
+ *
+ * @return string The content type of the final image (png or webp)
+ **/
+function compress_image_png( $filename, $quality ) {
+ $content_type = 'image/png';
+ if ( isset( $_GET['quality'] ) && 100 == intval( $_GET['quality'] ) ) {
+ if ( false !== OPTIPNG ) {
+ exec( OPTIPNG . " $filename" );
+ } else if ( false !== CWEBP && ( defined( 'CWEBP_PNG' ) && true === CWEBP_PNG ) &&
+ isset( $_SERVER['HTTP_ACCEPT'] ) && false !== strpos( $_SERVER['HTTP_ACCEPT'], 'image/webp' ) ) {
+ $content_type = 'image/webp';
+ exec( CWEBP . " -quiet --lossless $filename -o $filename" );
+ }
+ } else {
+ if ( false !== CWEBP && ( defined( 'CWEBP_PNG' ) && true === CWEBP_PNG ) &&
+ isset( $_SERVER['HTTP_ACCEPT'] ) && false !== strpos( $_SERVER['HTTP_ACCEPT'], 'image/webp' ) ) {
+ $content_type = 'image/webp';
+ exec( CWEBP . " -quiet -q $quality -alpha_q 100 $filename -o $filename" );
+ } else if ( false !== PNGQUANT ) {
+ exec( PNGQUANT . ' --speed 5 --quality=' . $quality . "-100 -f -o $filename $filename" );
+ if ( false !== OPTIPNG ) exec( OPTIPNG . " -o1 $filename" );
+ } else {
+ if ( false !== OPTIPNG ) exec( OPTIPNG . " $filename" );
+ }
+ }
+ return $content_type;
+}
+
+/**
+ * Compresses the JPEG image using the best option available
+ *
+ * @param string $filename The file name of the temp image to compress
+ * @param resource $image The GraphicsMagick image resource
+ * @param int $quality The requested quality of the image
+ *
+ * @return string The content type of the final image (jpeg or webp)
+ **/
+function compress_image_jpg( $filename, $image, $quality ) {
+ $content_type = 'image/jpeg';
+ // Convert to WEBP if the following hold:
+ // 1. WEBP image processing for JPEGs is enabled.
+ // 2. The client is advertising support for WEBP in the accept header.
+ // 3. The requested quality is not 100%, as we need to honour sending images at their original
+ // visual quality and WEBP images at high quality are larger than their JPEG counterparts.
+ if ( false !== CWEBP && ( defined( 'CWEBP_JPEG' ) && true === CWEBP_JPEG ) &&
+ isset( $_SERVER['HTTP_ACCEPT'] ) && false !== strpos( $_SERVER['HTTP_ACCEPT'], 'image/webp' ) &&
+ ! ( isset( $_GET['quality'] ) && 100 == intval( $_GET['quality'] ) ) ) {
+ $content_type = 'image/webp';
+ exifrotate( $filename, $image, true );
+ if ( Gmagick::IMGTYPE_GRAYSCALE == $image->getimagetype() ) {
+ exec( CWEBP . " --lossless -quiet -m 2 -q $quality -o $filename $filename" );
+ } else {
+ exec( CWEBP . " -quiet -m 2 -q $quality -o $filename $filename" );
+ }
+ } else if ( false !== JPEGOPTIM ) {
+ $strip = false;
+ if ( isset( $_GET['strip'] ) ) {
+ $strip = $_GET['strip'];
+ exifrotate( $filename, $image, $strip );
+ }
+ jpegoptim( $filename, $strip );
+ }
+ return $content_type;
}
$parsed = parse_url( $_SERVER['REQUEST_URI'] );
@@ -651,22 +765,19 @@ $exploded = explode( '/', $_SERVER['REQUEST_URI'] );
$origin_domain = strtolower( $exploded[1] );
$origin_domain_exception = array_key_exists( $origin_domain, $origin_domain_exceptions ) ? $origin_domain_exceptions[$origin_domain] : 0;
-$scheme = 'http' . ( array_key_exists( 'ssl', $_GET ) ? 's' : '' ) . '://';
+$scheme = 'http' . ( array_key_exists( 'HTTPS', $_SERVER ) ? 's' : '' ) . '://';
parse_str( ( empty( $parsed['query'] ) ? '' : $parsed['query'] ), $_GET );
$ext = strtolower( pathinfo( $parsed['path'], PATHINFO_EXTENSION ) );
-if ( ! in_array( $ext, $allowed_types ) && !( $origin_domain_exception & PHOTON__ALLOW_ANY_EXTENSION ) )
- httpdie( '400 Bad Request', 'Error 0001. The type of image you are trying to process is not allowed.' );
-
$url = $scheme . substr( $parsed['path'], 1 );
$url = preg_replace( '/#.*$/', '', $url );
$url = apply_filters( 'url', $url );
-if ( isset( $parsed['query'] ) ) {
+if ( isset( $_GET['q'] ) ) {
if ( $origin_domain_exception & PHOTON__ALLOW_QUERY_STRINGS ) {
- $url .= '?' . preg_replace( '/#.*$/', '', (string) $parsed['query'] );
- unset( $parsed['query'] );
+ $url .= '?' . preg_replace( '/#.*$/', '', (string) $_GET['q'] );
+ unset( $_GET['q'] );
} else {
httpdie( '400 Bad Request', "Sorry, the parameters you provided were not valid" );
}
@@ -690,6 +801,13 @@ if ( 'GIF' === substr( $raw_data, 0, 3 ) ) {
require dirname( __FILE__ ) . '/libgif.php';
$image = new Gif_Image( $raw_data );
$type = 'gif';
+ if ( 0 === strlen( $_SERVER['QUERY_STRING'] ) ) {
+ do_action( 'bump_stats', 'image_gif' );
+ photon_cache_headers( $url, 'image/gif' );
+ header( 'ETag: "' . substr( md5( $raw_data_size . '.' . time() ), 0, 16 ) . '"' );
+ header( 'Content-Length: ' . $raw_data_size );
+ die( $raw_data );
+ }
} else {
try {
$image = new Gmagick();
@@ -705,10 +823,17 @@ if ( ! in_array( $type, $allowed_types ) )
if ( $type == 'jpeg' )
$quality = get_jpeg_quality( $raw_data, $raw_data_size );
+else if ( $type == 'png' )
+ $quality = PHOTON__PNG_MAX_QUALITY;
else
- $quality = 90;
+ $quality = PHOTON__DEFAULT_MAX_QUALITY;
unset( $raw_data );
+if ( isset( $_GET['quality'] ) )
+ $quality = min( max( intval( $_GET['quality'] ), 20 ), $quality );
+else
+ $quality = min( PHOTON__DEFAULT_MAX_QUALITY, $quality );
+
try {
// Run through all uri supplied functions which are valid and allowed
foreach( $_GET as $function_name => $arguments ) {
@@ -722,50 +847,37 @@ try {
switch ( $type ) {
case 'png':
- do_action( 'bump_stats', 'image_png' );
- header( 'Content-Type: image/png' );
$image->setcompressionquality( $quality );
$tmp = tempnam( $tmpdir, 'OPTIPNG-' );
$image->write( $tmp );
$og = filesize( $tmp );
- exec( OPTIPNG . " $tmp" );
+ $content_type = compress_image_png( $tmp, $quality );
clearstatcache();
$save = $og - filesize( $tmp );
+ serve_file( $url, $content_type, $tmp, $save );
+ do_action( 'bump_stats', 'image_png' . ( 'image/webp' == $content_type ? '_as_webp' : '' ) );
do_action( 'bump_stats', 'png_bytes_saved', $save );
- $fp = fopen( $tmp, 'r' );
- photon_cache_headers();
- header( 'Content-Length: ' . filesize( $tmp ) );
- header( 'X-Bytes-Saved: ' . $save );
- unlink( $tmp );
- fpassthru( $fp );
break;
case 'gif':
do_action( 'bump_stats', 'image_gif' );
- if ( $image->process_image() ) {
- photon_cache_headers();
- header( 'Content-Type: image/gif' );
- echo $image->get_imageblob();
+ if ( $image->process_image_functions( PHOTON__UPSCALE_MAX_PIXELS_GIF ) ) {
+ photon_cache_headers( $url, 'image/gif' );
+ echo $image->get_image_blob();
} else {
httpdie( '400 Bad Request', "Sorry, the parameters you provided were not valid" );
}
break;
default:
- do_action( 'bump_stats', 'image_jpeg' );
- header( 'Content-Type: image/jpeg' );
$image->setcompressionquality( $quality );
$tmp = tempnam( $tmpdir, 'JPEGOPTIM-' );
$image->write( $tmp );
$og = filesize( $tmp );
- exec( JPEGOPTIM . " --all-progressive -p $tmp" );
+ $content_type = compress_image_jpg( $tmp, $image, $quality );
clearstatcache();
$save = $og - filesize( $tmp );
+ serve_file( $url, $content_type, $tmp, $save );
+ do_action( 'bump_stats', 'image_jpeg' . ( 'image/webp' == $content_type ? '_as_webp' : '' ) );
do_action( 'bump_stats', 'jpg_bytes_saved', $save );
- $fp = fopen( $tmp, 'r' );
- photon_cache_headers();
- header( 'Content-Length: ' . filesize( $tmp ) );
- header( 'X-Bytes-Saved: ' . $save );
- unlink( $tmp );
- fpassthru( $fp );
break;
}
diff --git a/libgif.php b/libgif.php
index e0921b4fc3b970997f0db0c130e6e31f96513592..90a05d234e1b1319f0b63041ef304ca9bf36b371 100644
--- a/libgif.php
+++ b/libgif.php
@@ -1,6 +1,7 @@
<?php
/*
- * Classes to handle the cropping, resizing and manipulation of animated GIF image files.
+ * Classes to manipulate animated GIF images.
+ * Maintained at: https://code.trac.wordpress.org/browser/photon/libgif.php
*/
if ( ! class_exists( 'Gif_Frame' ) ) {
@@ -18,22 +19,22 @@ if ( ! class_exists( 'Gif_Frame' ) ) {
private $_image;
function __construct( $lc_mod, $palette, $image, $head, $box_dims, $gr_mod ) {
- $this->pos_x = $box_dims[0];
- $this->pos_y = $box_dims[1];
- $this->width = $box_dims[2];
- $this->height = $box_dims[3];
+ $this->pos_x = $box_dims[0];
+ $this->pos_y = $box_dims[1];
+ $this->width = $box_dims[2];
+ $this->height = $box_dims[3];
- $this->lc_mod = $lc_mod;
- $this->gr_mod = $gr_mod;
- $this->palette = $palette;
+ $this->lc_mod = $lc_mod;
+ $this->gr_mod = $gr_mod;
+ $this->palette = $palette;
if ( strlen( $gr_mod ) == 8 )
- $this->transp = ord( $gr_mod[3] ) & 1 ? 1 : 0;
+ $this->transp = ord( $gr_mod[3] ) & 1 ? 1 : 0;
else
- $this->transp = 0;
+ $this->transp = 0;
- $this->head = $head;
- $this->image = $image;
+ $this->head = $head;
+ $this->image = $image;
}
public function __set( $name, $value ) {
@@ -70,6 +71,7 @@ if ( ! class_exists( 'Gif_Image' ) ) {
private $crop_width = 0;
private $crop_height = 0;
private $crop = false;
+ private $fit = false;
private $resize_ratio = Array( 0, 0 );
private $frame_count = 0;
private $au = 0;
@@ -82,8 +84,10 @@ if ( ! class_exists( 'Gif_Image' ) ) {
private $dl_frms = Array();
private $pre_process_actions = Array();
private $post_process_actions = Array();
+ private $upscale_max_pixels = 1000;
+ private $zoom_enabled = true;
- private static $pre_actions = Array( 'setheight', 'setwidth', 'crop', 'resize_and_crop', 'fit_in_box' );
+ private static $pre_actions = Array( 'set_height', 'set_width', 'crop', 'crop_offset', 'resize_and_crop', 'fit_in_box' );
const optimize = true;
@@ -99,17 +103,18 @@ if ( ! class_exists( 'Gif_Image' ) ) {
function __construct( $gif_data ) {
$this->gif = $gif_data;
$this->max_len = strlen( $gif_data );
- if ( $this->max_len < 14 )
- httpdie( '400 Bad Request', "unable to process the image data" );
-
+ if ( $this->max_len < 14 ) {
+ $this->error_and_die( '400 Bad Request', 'unable to process the image data' );
+ }
$this->gif_header = $this->get_bytes(13);
$this->parse_header();
$this->parse_frames();
$buffer_add = '';
while ( self::GIF_BLOCK_END != ord( $this->gif[ $this->ptr ] ) ) {
- if ( $this->ptr >= $this->max_len )
- httpdie( '400 Bad Request', "unable to process the image data" );
+ if ( $this->ptr >= $this->max_len ) {
+ $this->error_and_die( '400 Bad Request', 'unable to process the image data' );
+ }
switch ( ord( $this->gif[ $this->ptr + 1 ] ) ) {
case self::GIF_EXT_COMMENT:
$sum = 2;
@@ -180,8 +185,9 @@ if ( ! class_exists( 'Gif_Image' ) ) {
// invalid start header found, increment by 1 byte to 'sync' to the next header
$this->get_bytes( 1 );
}
- if ( $this->ptr >= $this->max_len )
- httpdie( '400 Bad Request', "unable to process the image header" );
+ if ( $this->ptr >= $this->max_len ) {
+ $this->error_and_die( '400 Bad Request', 'unable to process the image data' );
+ }
}
$this->g_mod = $buff;
}
@@ -198,8 +204,9 @@ if ( ! class_exists( 'Gif_Image' ) ) {
$this->frame_count--;
continue 2;
}
- if ( $this->ptr >= $this->max_len )
- httpdie( '400 Bad Request', "unable to process the image frames" );
+ if ( $this->ptr >= $this->max_len ) {
+ $this->error_and_die( '400 Bad Request', 'unable to process the image data' );
+ }
switch ( ord( $this->gif[ $this->ptr + 1 ] ) ) {
case self::GIF_EXT_GRAPHIC_CONTROL:
$this->gn_fld[] = $this->gif[ $this->ptr + 3 ];
@@ -306,6 +313,17 @@ if ( ! class_exists( 'Gif_Image' ) ) {
return chr( $int & 255 ) . chr( ( $int & 0xFF00 ) >> 8 );
}
+ private function error_and_die( $result = '400 Bad Request', $message = '' ) {
+ if ( function_exists( 'imageresize_graceful_fail' ) ) {
+ imageresize_graceful_fail();
+ } else if ( function_exists( 'httpdie' ) ) {
+ httpdie( $result, $message );
+ } else {
+ header( "HTTP/1.1 $result" );
+ die( $message );
+ }
+ }
+
private function filter( &$image, $filter ) {
$args = explode( ',', $filter );
$filter = array_shift( $args );
@@ -461,14 +479,19 @@ if ( ! class_exists( 'Gif_Image' ) ) {
} else {
$offset_x = 0;
$offset_y = 0;
- $n_width = round( $this->frame_array[$index]->width * $this->resize_ratios[0] ) ? : 1;
- $n_height = round( $this->frame_array[$index]->height * $this->resize_ratios[1] ) ? : 1;
+ if ( $this->fit ) {
+ $n_width = $this->new_width;
+ $n_height = $this->new_height;
+ } else {
+ $n_width = round( $this->frame_array[$index]->width * $this->resize_ratios[0] ) ? : 1;
+ $n_height = round( $this->frame_array[$index]->height * $this->resize_ratios[1] ) ? : 1;
+ }
$s_width = $this->frame_array[$index]->width;
$s_height = $this->frame_array[$index]->height;
}
- if ( 0 == $n_width ) $n_width = 1;
- if ( 0 == $n_height ) $n_height = 1;
+ if ( 0 >= $n_width ) $n_width = 1;
+ if ( 0 >= $n_height ) $n_height = 1;
if ( 0 >= $s_width ) $s_width = 1;
if ( 0 >= $s_height ) $s_height = 1;
@@ -522,28 +545,26 @@ if ( ! class_exists( 'Gif_Image' ) ) {
$hd = $offset = 13 + pow( 2, ( ord( $str_img[10] ) & 7 ) + 1 ) * 3;
$palet = '';
$i_hd = 0;
- $m_off = 0;
for ( $i = 13; $i < $offset; $i++ )
$palet .= $str_img[$i];
$str_max_len = strlen( $str_img );
- if ( $this->frame_array[$index]->transp ) {
- while ( self::GIF_EXT_GRAPHIC_CONTROL != ord( $str_img[ $offset + $m_off ] ) ) {
- $m_off++;
- if ( ( $offset + $m_off + 4 ) > $str_max_len )
- httpdie( '400 Bad Request', "unable to reprocess the image frame" );
- }
- $str_img[ $offset + $m_off + 2 ] = $this->gn_fld[ $index ];
- $str_img[ $offset + $m_off + 3 ] = $this->dl_frmf[ $index ];
- $str_img[ $offset + $m_off + 4 ] = $this->dl_frms[ $index ];
- }
-
while ( self::GIF_BLOCK_IMAGE_DESCRIPTOR != ord( $str_img[ $offset ] ) ) {
- $offset++;
- $i_hd++;
- if ( ( $offset + 9 ) > $str_max_len )
- httpdie( '400 Bad Request', "unable to reprocess the image frame" );
+ if ( self::GIF_EXT_GRAPHIC_CONTROL == ord( $str_img[ $offset + 1 ] ) &&
+ $this->frame_array[$index]->transp ) {
+ $str_img[ $offset + 3 ] = $this->gn_fld[ $index ];
+ $str_img[ $offset + 4 ] = $this->dl_frmf[ $index ];
+ $str_img[ $offset + 5 ] = $this->dl_frms[ $index ];
+ }
+ $sum = 2;
+ while ( 0x00 != ( $lc_i = ord( $str_img[ $offset + $sum ] ) ) )
+ $sum += $lc_i + 1;
+ $offset += ( $sum + 1 );
+ $i_hd += ( $sum + 1 );
+ if ( ( $offset + 10 ) > $str_max_len ) {
+ $this->error_and_die( '400 Bad Request', 'unable to reprocess the image frame' );
+ }
}
$str_img[ $offset + 1 ] = $this->frame_array[ $index ]->off_xy[0];
@@ -551,14 +572,14 @@ if ( ! class_exists( 'Gif_Image' ) ) {
$str_img[ $offset + 3 ] = $this->frame_array[ $index ]->off_xy[2];
$str_img[ $offset + 4 ] = $this->frame_array[ $index ]->off_xy[3];
$str_img[ $offset + 9 ] = chr( $str_img[ $offset + 9 ] | 0x80 | ( ord( $str_img[10] ) & 0x7 ) );
- $ms1 = substr( $str_img, $hd, $i_hd + 10 );
+ $ms1 = substr( $str_img, $hd, $i_hd + 10 );
$ms1 = $this->frame_array[$index]->gr_mod . $ms1;
return $ms1 . $palet . substr( substr( $str_img, $offset + 10 ), 0, -1 );
}
- private function setheight( $args, $upscale = false ) {
+ private function set_height( $args, $upscale = false ) {
if ( substr( $args, -1 ) == '%' )
$this->new_height = round( $this->int_h * abs( intval( $args ) ) / 100 );
else
@@ -572,7 +593,7 @@ if ( ! class_exists( 'Gif_Image' ) ) {
return;
}
// sane limit when upscaling, defaults to 1000
- if ( $this->new_height > $this->int_h && $upscale && $this->new_height > PHOTON__UPSCALE_MAX_PIXELS ) {
+ if ( $this->new_height > $this->int_h && $upscale && $this->new_height > $this->upscale_max_pixels ) {
// if the sizes are too big, then we serve the original size
$this->new_width = $this->int_w;
$this->new_height = $this->int_h;
@@ -587,7 +608,7 @@ if ( ! class_exists( 'Gif_Image' ) ) {
$this->crop_height = $this->new_height;
}
- private function setwidth( $args, $upscale = false ) {
+ private function set_width( $args, $upscale = false ) {
if ( '%' == substr( $args, -1 ) )
$this->new_width = round( $this->int_w * abs( intval( $args ) ) / 100 );
else
@@ -602,7 +623,7 @@ if ( ! class_exists( 'Gif_Image' ) ) {
}
// Sane limit when upscaling, defaults to 1000
- if ( $this->new_width > $this->int_w && $upscale && $this->new_width > PHOTON__UPSCALE_MAX_PIXELS ) {
+ if ( $this->new_width > $this->int_w && $upscale && $this->new_width > $this->upscale_max_pixels ) {
// if the sizes are too big, then we serve the original size
$this->new_width = $this->int_w;
$this->new_height = $this->int_h;
@@ -640,8 +661,8 @@ if ( ! class_exists( 'Gif_Image' ) ) {
// check that if we have made it bigger than the images original size, that we remain with bounds
if ( $this->new_width >= $this->int_w && $this->new_height >= $this->int_h ) {
- if ( ( $this->new_width > PHOTON__UPSCALE_MAX_PIXELS ) ||
- ( $this->new_height > PHOTON__UPSCALE_MAX_PIXELS ) ) {
+ if ( ( $this->new_width > $this->upscale_max_pixels ) ||
+ ( $this->new_height > $this->upscale_max_pixels ) ) {
$this->new_width = $this->int_w;
$this->new_height = $this->int_h;
}
@@ -656,7 +677,6 @@ if ( ! class_exists( 'Gif_Image' ) ) {
$this->new_height = $this->int_h;
return;
}
-
list( $end_w, $end_h ) = explode( ',', $args );
$end_w = abs( intval( $end_w ) );
@@ -672,21 +692,22 @@ if ( ! class_exists( 'Gif_Image' ) ) {
if ( $original_aspect >= $new_aspect ) {
$this->new_height = $end_h;
- $this->new_width = $this->int_w / ( $this->int_h / $end_h );
+ $this->new_width = round( $this->int_w / ( $this->int_h / $end_h ) );
// check we haven't overstepped the width
if ( $this->new_width > $end_w ) {
- $this->new_height = $this->new_height - round( ( $this->new_width - $end_w ) * $new_aspect );
$this->new_width = $end_w;
+ $this->new_height = round( $this->int_h / ( $this->int_w / $end_w ) );
}
} else {
$this->new_width = $end_w;
- $this->new_height = $this->int_h / ( $this->int_w / $end_w );
+ $this->new_height = round( $this->int_h / ( $this->int_w / $end_w ) );
// check we haven't overstepped the height
if ( $this->new_height > $end_h ) {
- $this->new_width = $this->new_width - round( ( $this->new_height - $end_h ) * $new_aspect );
$this->new_height = $end_h;
+ $this->new_width = round( $this->int_w / ( $this->int_h / $end_h ) );
}
}
+ $this->fit = true;
}
}
@@ -697,7 +718,6 @@ if ( ! class_exists( 'Gif_Image' ) ) {
$this->new_height = $this->int_h;
return;
}
-
$args = explode( ',', $args );
// if we don't have the correct number of args, default
@@ -732,6 +752,32 @@ if ( ! class_exists( 'Gif_Image' ) ) {
$this->crop = true;
}
+ private function crop_offset( $args ) {
+ // if the args are malformed, default to the original size
+ if ( false === strpos( $args, ',' ) ) {
+ $this->new_width = $this->int_w;
+ $this->new_height = $this->int_h;
+ return;
+ }
+ $args = explode( ',', $args );
+
+ // if we don't have the correct number of args, default
+ if ( count( $args ) != 4 ) {
+ $this->new_width = $this->int_w;
+ $this->new_height = $this->int_h;
+ return;
+ }
+
+ $this->crop_width = max( 0, min( $this->int_w, intval( $args[2] ) ) );
+ $this->crop_height = max( 0, min( $this->int_h, intval( $args[3] ) ) );
+ $this->s_x = intval( $args[0] );
+ $this->s_y = intval( $args[1] );
+
+ $this->new_width = $this->crop_width;
+ $this->new_height = $this->crop_height;
+ $this->crop = true;
+ }
+
private function resize_and_crop( $args ) {
// if the args are malformed, default to the original size
if ( false === strpos( $args, ',' ) ) {
@@ -756,39 +802,77 @@ if ( ! class_exists( 'Gif_Image' ) ) {
// If the original and new images are proportional (no cropping needed), just do a standard resize
if ( $ratio_orig == $ratio_end ) {
- $this->setwidth( $end_w, true );
+ $this->set_width( $end_w, true );
} else {
- $aspect_ratio = $this->int_w / $this->int_h;
-
- if ( $end_w >= $this->int_w && $end_h >= $this->int_h ) {
- $this->new_width = max( $end_w, $this->int_w );
- $this->new_height = max( $end_h, $this->int_h );
- if ( ( $this->new_width > PHOTON__UPSCALE_MAX_PIXELS ) ||
- ( $this->new_height > PHOTON__UPSCALE_MAX_PIXELS ) ) {
- $this->new_width = $this->int_w;
- $this->new_height = $this->int_h;
- }
- } else {
- $this->new_width = $end_w;
- $this->new_height = $end_h;
- }
+ if ( $end_w >= $this->int_w && $end_h >= $this->int_h ) {
+ $this->new_width = max( $end_w, $this->int_w );
+ $this->new_height = max( $end_h, $this->int_h );
+ } else {
+ $this->new_width = $end_w;
+ $this->new_height = $end_h;
+ }
+
+ if ( ! $this->new_width )
+ $this->new_width = intval( $this->new_height * $ratio_orig );
+ if ( ! $this->new_height )
+ $this->new_height = intval( $this->new_width / $ratio_orig );
+
+ // Check if the width or height are too large, if they are then default to original size
+ if ( ( ( $this->new_width > $this->int_w ) && ( $this->new_width > $this->upscale_max_pixels ) ) ||
+ ( $this->new_height > $this->int_h && ( $this->new_height > $this->upscale_max_pixels ) ) ) {
+ $this->new_width = $this->int_w;
+ $this->new_height = $this->int_h;
+ return;
+ }
+
+ $size_ratio = max( $this->new_width / $this->int_w, $this->new_height / $this->int_h );
+ $this->crop_width = min( ceil( $this->new_width / $size_ratio ), $this->int_w );
+ $this->crop_height = min( ceil( $this->new_height / $size_ratio ), $this->int_h );
+
+ $this->s_x = round( ( $this->int_w - $this->crop_width ) / 2 );
+ $this->s_y = round( ( $this->int_h - $this->crop_height ) / 2 );
+ $this->crop = true;
+ }
+ }
- if ( ! $this->new_width )
- $this->new_width = intval( $this->new_height * $aspect_ratio );
- if ( ! $this->new_height )
- $this->new_height = intval( $this->new_width / $aspect_ratio );
+ public function process_image( $new_w, $new_h, $crop, $s_x, $s_y, $crop_w, $crop_h ) {
+ // if the gif image has an invalid size for either value, do not process it
+ if ( 1 > $this->int_w || 1 > $this->int_h )
+ return false;
- $size_ratio = max( $this->new_width / $this->int_w, $this->new_height / $this->int_h );
- $this->crop_width = min( ceil( $this->new_width / $size_ratio ), $this->int_w );
- $this->crop_height = min( ceil( $this->new_height / $size_ratio ), $this->int_h );
+ $this->new_width = $new_w;
+ $this->new_height = $new_h;
+ $this->crop = $crop;
+ $this->s_x = $s_x;
+ $this->s_y = $s_y;
+ $this->crop_width = $crop_w;
+ $this->crop_height = $crop_h;
+
+ // we fail if the image size is too small
+ if ( 1 > $this->new_width || 1 > $this->new_height )
+ return false;
+
+ if ( $this->crop ) {
+ $this->resize_ratios[0] = $this->new_width / $this->crop_width;
+ $this->resize_ratios[1] = $this->new_height / $this->crop_height;
+ } else {
+ $this->resize_ratios[0] = $this->new_width / $this->int_w;
+ $this->resize_ratios[1] = $this->new_height / $this->int_h;
+ }
- $this->s_x = round( ( $this->int_w - $this->crop_width ) / 2 );
- $this->s_y = round( ( $this->int_h - $this->crop_height ) / 2 );
- $this->crop = true;
+ $this->image_data = '';
+ for ( $i = 0; $i < $this->frame_count; $i++ ) {
+ $this->image_data .= $this->repack_frame( $this->process_frame( $this->get_frame_image( $i ), $i ), $i );
+ $this->frame_array[ $i ] = null;
}
+
+ return true;
}
- public function process_image() {
+ public function process_image_functions( $upscale_max_pixels ) {
+ if ( isset( $upscale_max_pixels ) )
+ $this->upscale_max_pixels = $upscale_max_pixels;
+
// if the gif image has an invalid size for either value, do not process it
if ( 1 > $this->int_w || 1 > $this->int_h )
return false;
@@ -796,7 +880,7 @@ if ( ! class_exists( 'Gif_Image' ) ) {
// we need at least one action to perform otherwise we should just send the original
if ( 0 == count( $this->pre_process_actions ) ) {
$this->pre_process_actions[] = Array (
- 'func_name' => 'setWidth',
+ 'func_name' => 'set_width',
'params' => $this->int_w,
);
}
@@ -805,15 +889,13 @@ if ( ! class_exists( 'Gif_Image' ) ) {
// do the pre-processing functions
foreach ( $this->pre_process_actions as $action ) {
$this->$action[ 'func_name' ]( $action[ 'params' ] );
- if ( 'crop' == $action[ 'func_name' ] )
+ if ( 'crop' == $action[ 'func_name' ] || 'crop_offset' == $action[ 'func_name' ] )
$cropped = true;
}
- // zoom functionality is not supported with the 'crop' function
- if ( ! $cropped ) {
- // check if zoom needs to be run, and run if neccessary
- if ( isset( $_GET['zoom'] ) )
- $this->zoom( $_GET['zoom'] );
+ // zoom functionality is not supported with the 'crop-style' functions
+ if ( ! $cropped && isset( $_GET['zoom'] ) && $this->zoom_enabled ) {
+ $this->zoom( $_GET['zoom'] );
}
// we fail if the image size is too small
@@ -829,13 +911,15 @@ if ( ! class_exists( 'Gif_Image' ) ) {
}
$this->image_data = '';
- for ( $i = 0; $i < $this->frame_count; $i++ )
+ for ( $i = 0; $i < $this->frame_count; $i++ ) {
$this->image_data .= $this->repack_frame( $this->process_frame( $this->get_frame_image( $i ), $i ), $i );
+ $this->frame_array[ $i ] = null;
+ }
return true;
}
- public function get_imageblob() {
+ public function get_image_blob() {
$gm = $this->gif_header;
$gm[10] = $gm[10] & 0x7F;
$i_bytes = $this->int_raw( round( ( $this->crop ? $this->crop_width : $this->int_w ) * $this->resize_ratios[0] ) ? : 1 );
@@ -845,6 +929,8 @@ if ( ! class_exists( 'Gif_Image' ) ) {
$gm[8] = $i_bytes[0];
$gm[9] = $i_bytes[1];
+ $this->image_data = $gm . $this->g_mod . $this->image_data;
+
$con = '';
if ( strlen( $this->g_mode ) )
$con = $this->g_mode . "\x3B";
@@ -854,7 +940,14 @@ if ( ! class_exists( 'Gif_Image' ) ) {
if ( ! $this->au )
$con = "\x21\xFE\x0Eautomattic_inc\x00" . $con;
- return $gm . $this->g_mod . $this->image_data . ( iconv_strlen( $con ) >= 19 ? $con : "\x21" );
+ $this->image_data .= ( strlen( $con ) >= 19 ? $con : "\x21" );
+
+ if ( ! headers_sent() ) {
+ header( 'ETag: "' . substr( md5( strlen( $this->image_data ) . '.' . time() ), 0, 16 ) . '"' );
+ header( 'Content-Length: ' . strlen( $this->image_data ) );
+ }
+
+ return $this->image_data;
}
public function add_function( $function_name, $arguments ) {
@@ -870,5 +963,21 @@ if ( ! class_exists( 'Gif_Image' ) ) {
);
}
}
+
+ public function get_frame_count() {
+ return $this->frame_count;
+ }
+
+ public function get_image_width() {
+ return intval( $this->int_w );
+ }
+
+ public function get_image_height() {
+ return intval( $this->int_h );
+ }
+
+ public function disable_zoom() {
+ $this->zoom_enabled = false;
+ }
}
}
diff --git a/libjpeg.php b/libjpeg.php
index 9eb68267feda819922c89adebe1a8c309c252bfa..64fbbf5fff3e0f7f5810007172999fb8977edd76 100644
--- a/libjpeg.php
+++ b/libjpeg.php
@@ -1,6 +1,6 @@
<?php
-function get_jpeg_header_data( &$buff, $buff_len, $want=null ) {
+function get_jpeg_header_data( &$buff, $buff_len, $want=null ) {
$data = buffer_read( $buff, $buff_len, 2, true ); // Read the first two characters
// Check that the first two characters are 0xFF 0xDA (SOI - Start of image)
if ( $data != "\xFF\xD8" ) {
@@ -13,13 +13,13 @@ function get_jpeg_header_data( &$buff, $buff_len, $want=null ) {
// NO FF found - close file and return - JPEG is probably corrupted
return false;
}
- // Cycle through the file until, one of:
+ // Cycle through the file until, one of:
// 1) an EOI (End of image) marker is hit,
// 2) we have hit the compressed image data (no more headers are allowed after data)
// 3) or end of file is hit
$headerdata = array();
$hit_compressed_image_data = FALSE;
- while ( ( $data{1} != "\xD9" ) && ( !$hit_compressed_image_data) && ( $data != '' ) ) {
+ while ( ( $data{1} != "\xD9" ) && ( !$hit_compressed_image_data) && ( $data != '' ) ) {
// Found a segment to look at.
// Check that the segment marker is not a Restart marker - restart markers don't have size or data after them
if ( ( ord($data{1}) < 0xD0 ) || ( ord($data{1}) > 0xD7 ) ) {
@@ -32,11 +32,11 @@ function get_jpeg_header_data( &$buff, $buff_len, $want=null ) {
$segdata = buffer_read( $buff, $buff_len, $decodedsize['size'] - 2 );
// Store the segment information in the output array
if ( !$want || $want == ord($data{1}) ) {
- $headerdata[] = (object)array(
+ $headerdata[] = (object)array(
"SegType" => ord($data{1}),
"SegName" => $GLOBALS[ "JPEG_Segment_Names" ][ ord($data{1}) ],
"SegDesc" => $GLOBALS[ "JPEG_Segment_Descriptions" ][ ord($data{1}) ],
- "SegData" => $segdata
+ "SegData" => $segdata
);
}
}
@@ -172,7 +172,7 @@ $GLOBALS[ "JPEG_Segment_Descriptions" ] = array(
* and how it handles identify -verbose $filename to present you with a Quality
* number. This number should be considered approximate. It's essentially
* based upon the numbers used to perform compression on the original image
- * data...
+ * data...
*
* See: http://www.obrador.com/essentialjpeg/headerinfo.htm
* See: http://www.impulseadventure.com/photo/jpeg-quantization.html
@@ -192,7 +192,7 @@ function get_jpeg_quality( &$buff, $buff_len = null ) {
143, 139, 132, 128, 125, 119, 115, 108, 104, 99,
94, 90, 84, 79, 74, 70, 64, 59, 55, 49,
45, 40, 34, 30, 25, 20, 15, 11, 6, 4,
- 0
+ 0
), // hash
'sums' => array (
32640, 32635, 32266, 31495, 30665, 29804, 29146, 28599, 28104,
@@ -239,18 +239,18 @@ function get_jpeg_quality( &$buff, $buff_len = null ) {
), // sums
), // single
); // tables
-
+
if ( ! isset( $buff_len ) )
$buff_len = strlen( $buff );
$headers = get_jpeg_header_data( $buff, $buff_len, 0xDB );
if ( !is_array( $headers ) || !count( $headers ) )
return 100;
- $header = $headers[0];
+ $header = $headers[0];
$quality = 0;
if ( strlen($header->SegData) > 128 ) {
$entry = array( 0 => array(), 1 => array() );
- foreach ( str_split( substr( $header->SegData, 1, 64) ) as $chr )
+ foreach ( str_split( substr( $header->SegData, 1, 64) ) as $chr )
$entry[0][] = ord($chr);
foreach ( str_split( substr( $header->SegData, -64) ) as $chr )
$entry[1][] = ord($chr);
@@ -270,8 +270,60 @@ function get_jpeg_quality( &$buff, $buff_len = null ) {
for( $i = 0; $i <= 100; $i++ ) {
if ( ( $qvalue < $tables[$table]['hash'][$i] ) && ( $sum < $tables[$table]['sums'][$i] ) )
continue;
- return $i;
+ return min( $i+1, 100 );
}
return 100; // go with a safe value
}
+function exifrotate( $file, $image, $strip ) {
+ if ( ! function_exists( 'exif_read_data' ) )
+ return;
+
+ if ( ! in_array( $strip, array( 'all', 'info' ) ) )
+ return;
+
+ $exif = @exif_read_data( $file );
+
+ if ( ! isset( $exif[ 'Orientation' ] ) )
+ return;
+
+ $degrees = 0;
+ switch( $exif[ 'Orientation' ] ) {
+ case 3:
+ $degrees = 180;
+ break;
+ case 6:
+ $degrees = 90;
+ break;
+ case 8:
+ $degrees = 270;
+ break;
+ }
+
+ if ( $degrees ) {
+ $image->rotateImage( 'black', $degrees );
+ // We need to write again, since we wrote it earlier to read EXIF data
+ $image->write( $file );
+ }
+}
+
+function jpegoptim( $file, $strip = false ) {
+ if ( false === JPEGOPTIM )
+ return;
+
+ $cmd = JPEGOPTIM . ' -T0.0 --all-progressive';
+ switch ( $strip ) {
+ case 'all':
+ $cmd .= ' -f --strip-all';
+ break;
+ case 'info':
+ $cmd .= ' -f --strip-com --strip-exif --strip-iptc';
+ break;
+ case 'color':
+ $cmd .= ' -f --strip-icc';
+ break;
+ }
+ $cmd .= " -p $file";
+ exec( $cmd );
+}
+