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Changeset 34851


Ignore:
Timestamp:
10/06/2015 03:58:42 AM (6 years ago)
Author:
wonderboymusic
Message:

Embeds: move some functions from media.php to a new file, embed-functions.php, via svn cp

See #32522.

Location:
trunk/src/wp-includes
Files:
1 edited
1 copied

Legend:

Unmodified
Added
Removed
  • trunk/src/wp-includes/embed-functions.php

    r34843 r34851  
    11<?php
    22/**
    3  * WordPress API for media display.
     3 * WordPress API for embedding content.
    44 *
    55 * @package WordPress
    6  * @subpackage Media
    7  */
    8 
    9 /**
    10  * Scale down the default size of an image.
    11  *
    12  * This is so that the image is a better fit for the editor and theme.
    13  *
    14  * The `$size` parameter accepts either an array or a string. The supported string
    15  * values are 'thumb' or 'thumbnail' for the given thumbnail size or defaults at
    16  * 128 width and 96 height in pixels. Also supported for the string value is
    17  * 'medium' and 'full'. The 'full' isn't actually supported, but any value other
    18  * than the supported will result in the content_width size or 500 if that is
    19  * not set.
    20  *
    21  * Finally, there is a filter named {@see 'editor_max_image_size'}, that will be
    22  * called on the calculated array for width and height, respectively. The second
    23  * parameter will be the value that was in the $size parameter. The returned
    24  * type for the hook is an array with the width as the first element and the
    25  * height as the second element.
    26  *
    27  * @since 2.5.0
    28  *
    29  * @global int   $content_width
    30  * @global array $_wp_additional_image_sizes
    31  *
    32  * @param int          $width   Width of the image in pixels.
    33  * @param int          $height  Height of the image in pixels.
    34  * @param string|array $size    Optional. Size or array of sizes of what the result image
    35  *                              should be. Accepts any valid image size name. Default 'medium'.
    36  * @param string       $context Optional. Could be 'display' (like in a theme) or 'edit'
    37  *                              (like inserting into an editor). Default null.
    38  * @return array Width and height of what the result image should resize to.
    39  */
    40 function image_constrain_size_for_editor( $width, $height, $size = 'medium', $context = null ) {
    41     global $content_width, $_wp_additional_image_sizes;
    42 
    43     if ( ! $context )
    44         $context = is_admin() ? 'edit' : 'display';
    45 
    46     if ( is_array($size) ) {
    47         $max_width = $size[0];
    48         $max_height = $size[1];
    49     }
    50     elseif ( $size == 'thumb' || $size == 'thumbnail' ) {
    51         $max_width = intval(get_option('thumbnail_size_w'));
    52         $max_height = intval(get_option('thumbnail_size_h'));
    53         // last chance thumbnail size defaults
    54         if ( !$max_width && !$max_height ) {
    55             $max_width = 128;
    56             $max_height = 96;
    57         }
    58     }
    59     elseif ( $size == 'medium' ) {
    60         $max_width = intval(get_option('medium_size_w'));
    61         $max_height = intval(get_option('medium_size_h'));
    62         // if no width is set, default to the theme content width if available
    63     }
    64     elseif ( $size == 'large' ) {
    65         /*
    66          * We're inserting a large size image into the editor. If it's a really
    67          * big image we'll scale it down to fit reasonably within the editor
    68          * itself, and within the theme's content width if it's known. The user
    69          * can resize it in the editor if they wish.
    70          */
    71         $max_width = intval(get_option('large_size_w'));
    72         $max_height = intval(get_option('large_size_h'));
    73         if ( intval($content_width) > 0 )
    74             $max_width = min( intval($content_width), $max_width );
    75     } elseif ( isset( $_wp_additional_image_sizes ) && count( $_wp_additional_image_sizes ) && in_array( $size, array_keys( $_wp_additional_image_sizes ) ) ) {
    76         $max_width = intval( $_wp_additional_image_sizes[$size]['width'] );
    77         $max_height = intval( $_wp_additional_image_sizes[$size]['height'] );
    78         if ( intval($content_width) > 0 && 'edit' == $context ) // Only in admin. Assume that theme authors know what they're doing.
    79             $max_width = min( intval($content_width), $max_width );
    80     }
    81     // $size == 'full' has no constraint
    82     else {
    83         $max_width = $width;
    84         $max_height = $height;
    85     }
    86 
    87     /**
    88      * Filter the maximum image size dimensions for the editor.
    89      *
    90      * @since 2.5.0
    91      *
    92      * @param array        $max_image_size An array with the width as the first element,
    93      *                                     and the height as the second element.
    94      * @param string|array $size           Size of what the result image should be.
    95      * @param string       $context        The context the image is being resized for.
    96      *                                     Possible values are 'display' (like in a theme)
    97      *                                     or 'edit' (like inserting into an editor).
    98      */
    99     list( $max_width, $max_height ) = apply_filters( 'editor_max_image_size', array( $max_width, $max_height ), $size, $context );
    100 
    101     return wp_constrain_dimensions( $width, $height, $max_width, $max_height );
    102 }
    103 
    104 /**
    105  * Retrieve width and height attributes using given width and height values.
    106  *
    107  * Both attributes are required in the sense that both parameters must have a
    108  * value, but are optional in that if you set them to false or null, then they
    109  * will not be added to the returned string.
    110  *
    111  * You can set the value using a string, but it will only take numeric values.
    112  * If you wish to put 'px' after the numbers, then it will be stripped out of
    113  * the return.
    114  *
    115  * @since 2.5.0
    116  *
    117  * @param int|string $width  Image width in pixels.
    118  * @param int|string $height Image height in pixels.
    119  * @return string HTML attributes for width and, or height.
    120  */
    121 function image_hwstring( $width, $height ) {
    122     $out = '';
    123     if ($width)
    124         $out .= 'width="'.intval($width).'" ';
    125     if ($height)
    126         $out .= 'height="'.intval($height).'" ';
    127     return $out;
    128 }
    129 
    130 /**
    131  * Scale an image to fit a particular size (such as 'thumb' or 'medium').
    132  *
    133  * Array with image url, width, height, and whether is intermediate size, in
    134  * that order is returned on success is returned. $is_intermediate is true if
    135  * $url is a resized image, false if it is the original.
    136  *
    137  * The URL might be the original image, or it might be a resized version. This
    138  * function won't create a new resized copy, it will just return an already
    139  * resized one if it exists.
    140  *
    141  * A plugin may use the 'image_downsize' filter to hook into and offer image
    142  * resizing services for images. The hook must return an array with the same
    143  * elements that are returned in the function. The first element being the URL
    144  * to the new image that was resized.
    145  *
    146  * @since 2.5.0
    147  *
    148  * @param int          $id   Attachment ID for image.
    149  * @param array|string $size Optional. Image size to scale to. Accepts a registered image size
    150  *                           or flat array of height and width values. Default 'medium'.
    151  * @return false|array Array containing the image URL, width, height, and boolean for whether
    152  *                     the image is an intermediate size. False on failure.
    153  */
    154 function image_downsize( $id, $size = 'medium' ) {
    155 
    156     if ( !wp_attachment_is_image($id) )
    157         return false;
    158 
    159     /**
    160      * Filter whether to preempt the output of image_downsize().
    161      *
    162      * Passing a truthy value to the filter will effectively short-circuit
    163      * down-sizing the image, returning that value as output instead.
    164      *
    165      * @since 2.5.0
    166      *
    167      * @param bool         $downsize Whether to short-circuit the image downsize. Default false.
    168      * @param int          $id       Attachment ID for image.
    169      * @param array|string $size     Size of image, either array or string. Default 'medium'.
    170      */
    171     if ( $out = apply_filters( 'image_downsize', false, $id, $size ) ) {
    172         return $out;
    173     }
    174 
    175     $img_url = wp_get_attachment_url($id);
    176     $meta = wp_get_attachment_metadata($id);
    177     $width = $height = 0;
    178     $is_intermediate = false;
    179     $img_url_basename = wp_basename($img_url);
    180 
    181     // try for a new style intermediate size
    182     if ( $intermediate = image_get_intermediate_size($id, $size) ) {
    183         $img_url = str_replace($img_url_basename, $intermediate['file'], $img_url);
    184         $width = $intermediate['width'];
    185         $height = $intermediate['height'];
    186         $is_intermediate = true;
    187     }
    188     elseif ( $size == 'thumbnail' ) {
    189         // fall back to the old thumbnail
    190         if ( ($thumb_file = wp_get_attachment_thumb_file($id)) && $info = getimagesize($thumb_file) ) {
    191             $img_url = str_replace($img_url_basename, wp_basename($thumb_file), $img_url);
    192             $width = $info[0];
    193             $height = $info[1];
    194             $is_intermediate = true;
    195         }
    196     }
    197     if ( !$width && !$height && isset( $meta['width'], $meta['height'] ) ) {
    198         // any other type: use the real image
    199         $width = $meta['width'];
    200         $height = $meta['height'];
    201     }
    202 
    203     if ( $img_url) {
    204         // we have the actual image size, but might need to further constrain it if content_width is narrower
    205         list( $width, $height ) = image_constrain_size_for_editor( $width, $height, $size );
    206 
    207         return array( $img_url, $width, $height, $is_intermediate );
    208     }
    209     return false;
    210 
    211 }
    212 
    213 /**
    214  * Register a new image size.
    215  *
    216  * Cropping behavior for the image size is dependent on the value of $crop:
    217  * 1. If false (default), images will be scaled, not cropped.
    218  * 2. If an array in the form of array( x_crop_position, y_crop_position ):
    219  *    - x_crop_position accepts 'left' 'center', or 'right'.
    220  *    - y_crop_position accepts 'top', 'center', or 'bottom'.
    221  *    Images will be cropped to the specified dimensions within the defined crop area.
    222  * 3. If true, images will be cropped to the specified dimensions using center positions.
    223  *
    224  * @since 2.9.0
    225  *
    226  * @global array $_wp_additional_image_sizes Associative array of additional image sizes.
    227  *
    228  * @param string     $name   Image size identifier.
    229  * @param int        $width  Image width in pixels.
    230  * @param int        $height Image height in pixels.
    231  * @param bool|array $crop   Optional. Whether to crop images to specified height and width or resize.
    232  *                           An array can specify positioning of the crop area. Default false.
    233  */
    234 function add_image_size( $name, $width = 0, $height = 0, $crop = false ) {
    235     global $_wp_additional_image_sizes;
    236 
    237     $_wp_additional_image_sizes[ $name ] = array(
    238         'width'  => absint( $width ),
    239         'height' => absint( $height ),
    240         'crop'   => $crop,
    241     );
    242 }
    243 
    244 /**
    245  * Check if an image size exists.
    246  *
    247  * @since 3.9.0
    248  *
    249  * @global array $_wp_additional_image_sizes
    250  *
    251  * @param string $name The image size to check.
    252  * @return bool True if the image size exists, false if not.
    253  */
    254 function has_image_size( $name ) {
    255     global $_wp_additional_image_sizes;
    256 
    257     return isset( $_wp_additional_image_sizes[ $name ] );
    258 }
    259 
    260 /**
    261  * Remove a new image size.
    262  *
    263  * @since 3.9.0
    264  *
    265  * @global array $_wp_additional_image_sizes
    266  *
    267  * @param string $name The image size to remove.
    268  * @return bool True if the image size was successfully removed, false on failure.
    269  */
    270 function remove_image_size( $name ) {
    271     global $_wp_additional_image_sizes;
    272 
    273     if ( isset( $_wp_additional_image_sizes[ $name ] ) ) {
    274         unset( $_wp_additional_image_sizes[ $name ] );
    275         return true;
    276     }
    277 
    278     return false;
    279 }
    280 
    281 /**
    282  * Registers an image size for the post thumbnail.
    283  *
    284  * @since 2.9.0
    285  *
    286  * @see add_image_size() for details on cropping behavior.
    287  *
    288  * @param int        $width  Image width in pixels.
    289  * @param int        $height Image height in pixels.
    290  * @param bool|array $crop   Optional. Whether to crop images to specified height and width or resize.
    291  *                           An array can specify positioning of the crop area. Default false.
    292  */
    293 function set_post_thumbnail_size( $width = 0, $height = 0, $crop = false ) {
    294     add_image_size( 'post-thumbnail', $width, $height, $crop );
    295 }
    296 
    297 /**
    298  * Gets an img tag for an image attachment, scaling it down if requested.
    299  *
    300  * The filter 'get_image_tag_class' allows for changing the class name for the
    301  * image without having to use regular expressions on the HTML content. The
    302  * parameters are: what WordPress will use for the class, the Attachment ID,
    303  * image align value, and the size the image should be.
    304  *
    305  * The second filter 'get_image_tag' has the HTML content, which can then be
    306  * further manipulated by a plugin to change all attribute values and even HTML
    307  * content.
    308  *
    309  * @since 2.5.0
    310  *
    311  * @param int          $id    Attachment ID.
    312  * @param string       $alt   Image Description for the alt attribute.
    313  * @param string       $title Image Description for the title attribute.
    314  * @param string       $align Part of the class name for aligning the image.
    315  * @param string|array $size  Optional. Registered image size to retrieve a tag for, or flat array
    316  *                            of height and width values. Default 'medium'.
    317  * @return string HTML IMG element for given image attachment
    318  */
    319 function get_image_tag( $id, $alt, $title, $align, $size = 'medium' ) {
    320 
    321     list( $img_src, $width, $height ) = image_downsize($id, $size);
    322     $hwstring = image_hwstring($width, $height);
    323 
    324     $title = $title ? 'title="' . esc_attr( $title ) . '" ' : '';
    325 
    326     $class = 'align' . esc_attr($align) .' size-' . esc_attr($size) . ' wp-image-' . $id;
    327 
    328     /**
    329      * Filter the value of the attachment's image tag class attribute.
    330      *
    331      * @since 2.6.0
    332      *
    333      * @param string $class CSS class name or space-separated list of classes.
    334      * @param int    $id    Attachment ID.
    335      * @param string $align Part of the class name for aligning the image.
    336      * @param string $size  Optional. Default is 'medium'.
    337      */
    338     $class = apply_filters( 'get_image_tag_class', $class, $id, $align, $size );
    339 
    340     $html = '<img src="' . esc_attr($img_src) . '" alt="' . esc_attr($alt) . '" ' . $title . $hwstring . 'class="' . $class . '" />';
    341 
    342     /**
    343      * Filter the HTML content for the image tag.
    344      *
    345      * @since 2.6.0
    346      *
    347      * @param string $html  HTML content for the image.
    348      * @param int    $id    Attachment ID.
    349      * @param string $alt   Alternate text.
    350      * @param string $title Attachment title.
    351      * @param string $align Part of the class name for aligning the image.
    352      * @param string $size  Optional. Default is 'medium'.
    353      */
    354     return apply_filters( 'get_image_tag', $html, $id, $alt, $title, $align, $size );
    355 }
    356 
    357 /**
    358  * Calculates the new dimensions for a down-sampled image.
    359  *
    360  * If either width or height are empty, no constraint is applied on
    361  * that dimension.
    362  *
    363  * @since 2.5.0
    364  *
    365  * @param int $current_width  Current width of the image.
    366  * @param int $current_height Current height of the image.
    367  * @param int $max_width      Optional. Max width in pixels to constrain to. Default 0.
    368  * @param int $max_height     Optional. Max height in pixels to constrain to. Default 0.
    369  * @return array First item is the width, the second item is the height.
    370  */
    371 function wp_constrain_dimensions( $current_width, $current_height, $max_width = 0, $max_height = 0 ) {
    372     if ( !$max_width && !$max_height )
    373         return array( $current_width, $current_height );
    374 
    375     $width_ratio = $height_ratio = 1.0;
    376     $did_width = $did_height = false;
    377 
    378     if ( $max_width > 0 && $current_width > 0 && $current_width > $max_width ) {
    379         $width_ratio = $max_width / $current_width;
    380         $did_width = true;
    381     }
    382 
    383     if ( $max_height > 0 && $current_height > 0 && $current_height > $max_height ) {
    384         $height_ratio = $max_height / $current_height;
    385         $did_height = true;
    386     }
    387 
    388     // Calculate the larger/smaller ratios
    389     $smaller_ratio = min( $width_ratio, $height_ratio );
    390     $larger_ratio  = max( $width_ratio, $height_ratio );
    391 
    392     if ( (int) round( $current_width * $larger_ratio ) > $max_width || (int) round( $current_height * $larger_ratio ) > $max_height ) {
    393         // The larger ratio is too big. It would result in an overflow.
    394         $ratio = $smaller_ratio;
    395     } else {
    396         // The larger ratio fits, and is likely to be a more "snug" fit.
    397         $ratio = $larger_ratio;
    398     }
    399 
    400     // Very small dimensions may result in 0, 1 should be the minimum.
    401     $w = max ( 1, (int) round( $current_width  * $ratio ) );
    402     $h = max ( 1, (int) round( $current_height * $ratio ) );
    403 
    404     // Sometimes, due to rounding, we'll end up with a result like this: 465x700 in a 177x177 box is 117x176... a pixel short
    405     // We also have issues with recursive calls resulting in an ever-changing result. Constraining to the result of a constraint should yield the original result.
    406     // Thus we look for dimensions that are one pixel shy of the max value and bump them up
    407 
    408     // Note: $did_width means it is possible $smaller_ratio == $width_ratio.
    409     if ( $did_width && $w == $max_width - 1 ) {
    410         $w = $max_width; // Round it up
    411     }
    412 
    413     // Note: $did_height means it is possible $smaller_ratio == $height_ratio.
    414     if ( $did_height && $h == $max_height - 1 ) {
    415         $h = $max_height; // Round it up
    416     }
    417 
    418     /**
    419      * Filter dimensions to constrain down-sampled images to.
    420      *
    421      * @since 4.1.0
    422      *
    423      * @param array $dimensions     The image width and height.
    424      * @param int   $current_width  The current width of the image.
    425      * @param int   $current_height The current height of the image.
    426      * @param int   $max_width      The maximum width permitted.
    427      * @param int   $max_height     The maximum height permitted.
    428      */
    429     return apply_filters( 'wp_constrain_dimensions', array( $w, $h ), $current_width, $current_height, $max_width, $max_height );
    430 }
    431 
    432 /**
    433  * Retrieves calculated resize dimensions for use in WP_Image_Editor.
    434  *
    435  * Calculates dimensions and coordinates for a resized image that fits
    436  * within a specified width and height.
    437  *
    438  * Cropping behavior is dependent on the value of $crop:
    439  * 1. If false (default), images will not be cropped.
    440  * 2. If an array in the form of array( x_crop_position, y_crop_position ):
    441  *    - x_crop_position accepts 'left' 'center', or 'right'.
    442  *    - y_crop_position accepts 'top', 'center', or 'bottom'.
    443  *    Images will be cropped to the specified dimensions within the defined crop area.
    444  * 3. If true, images will be cropped to the specified dimensions using center positions.
    445  *
    446  * @since 2.5.0
    447  *
    448  * @param int        $orig_w Original width in pixels.
    449  * @param int        $orig_h Original height in pixels.
    450  * @param int        $dest_w New width in pixels.
    451  * @param int        $dest_h New height in pixels.
    452  * @param bool|array $crop   Optional. Whether to crop image to specified height and width or resize.
    453  *                           An array can specify positioning of the crop area. Default false.
    454  * @return false|array False on failure. Returned array matches parameters for `imagecopyresampled()`.
    455  */
    456 function image_resize_dimensions($orig_w, $orig_h, $dest_w, $dest_h, $crop = false) {
    457 
    458     if ($orig_w <= 0 || $orig_h <= 0)
    459         return false;
    460     // at least one of dest_w or dest_h must be specific
    461     if ($dest_w <= 0 && $dest_h <= 0)
    462         return false;
    463 
    464     /**
    465      * Filter whether to preempt calculating the image resize dimensions.
    466      *
    467      * Passing a non-null value to the filter will effectively short-circuit
    468      * image_resize_dimensions(), returning that value instead.
    469      *
    470      * @since 3.4.0
    471      *
    472      * @param null|mixed $null   Whether to preempt output of the resize dimensions.
    473      * @param int        $orig_w Original width in pixels.
    474      * @param int        $orig_h Original height in pixels.
    475      * @param int        $dest_w New width in pixels.
    476      * @param int        $dest_h New height in pixels.
    477      * @param bool|array $crop   Whether to crop image to specified height and width or resize.
    478      *                           An array can specify positioning of the crop area. Default false.
    479      */
    480     $output = apply_filters( 'image_resize_dimensions', null, $orig_w, $orig_h, $dest_w, $dest_h, $crop );
    481     if ( null !== $output )
    482         return $output;
    483 
    484     if ( $crop ) {
    485         // crop the largest possible portion of the original image that we can size to $dest_w x $dest_h
    486         $aspect_ratio = $orig_w / $orig_h;
    487         $new_w = min($dest_w, $orig_w);
    488         $new_h = min($dest_h, $orig_h);
    489 
    490         if ( ! $new_w ) {
    491             $new_w = (int) round( $new_h * $aspect_ratio );
    492         }
    493 
    494         if ( ! $new_h ) {
    495             $new_h = (int) round( $new_w / $aspect_ratio );
    496         }
    497 
    498         $size_ratio = max($new_w / $orig_w, $new_h / $orig_h);
    499 
    500         $crop_w = round($new_w / $size_ratio);
    501         $crop_h = round($new_h / $size_ratio);
    502 
    503         if ( ! is_array( $crop ) || count( $crop ) !== 2 ) {
    504             $crop = array( 'center', 'center' );
    505         }
    506 
    507         list( $x, $y ) = $crop;
    508 
    509         if ( 'left' === $x ) {
    510             $s_x = 0;
    511         } elseif ( 'right' === $x ) {
    512             $s_x = $orig_w - $crop_w;
    513         } else {
    514             $s_x = floor( ( $orig_w - $crop_w ) / 2 );
    515         }
    516 
    517         if ( 'top' === $y ) {
    518             $s_y = 0;
    519         } elseif ( 'bottom' === $y ) {
    520             $s_y = $orig_h - $crop_h;
    521         } else {
    522             $s_y = floor( ( $orig_h - $crop_h ) / 2 );
    523         }
    524     } else {
    525         // don't crop, just resize using $dest_w x $dest_h as a maximum bounding box
    526         $crop_w = $orig_w;
    527         $crop_h = $orig_h;
    528 
    529         $s_x = 0;
    530         $s_y = 0;
    531 
    532         list( $new_w, $new_h ) = wp_constrain_dimensions( $orig_w, $orig_h, $dest_w, $dest_h );
    533     }
    534 
    535     // if the resulting image would be the same size or larger we don't want to resize it
    536     if ( $new_w >= $orig_w && $new_h >= $orig_h && $dest_w != $orig_w && $dest_h != $orig_h ) {
    537         return false;
    538     }
    539 
    540     // the return array matches the parameters to imagecopyresampled()
    541     // int dst_x, int dst_y, int src_x, int src_y, int dst_w, int dst_h, int src_w, int src_h
    542     return array( 0, 0, (int) $s_x, (int) $s_y, (int) $new_w, (int) $new_h, (int) $crop_w, (int) $crop_h );
    543 
    544 }
    545 
    546 /**
    547  * Resizes an image to make a thumbnail or intermediate size.
    548  *
    549  * The returned array has the file size, the image width, and image height. The
    550  * filter 'image_make_intermediate_size' can be used to hook in and change the
    551  * values of the returned array. The only parameter is the resized file path.
    552  *
    553  * @since 2.5.0
    554  *
    555  * @param string $file   File path.
    556  * @param int    $width  Image width.
    557  * @param int    $height Image height.
    558  * @param bool   $crop   Optional. Whether to crop image to specified height and width or resize.
    559  *                       Default false.
    560  * @return false|array False, if no image was created. Metadata array on success.
    561  */
    562 function image_make_intermediate_size( $file, $width, $height, $crop = false ) {
    563     if ( $width || $height ) {
    564         $editor = wp_get_image_editor( $file );
    565 
    566         if ( is_wp_error( $editor ) || is_wp_error( $editor->resize( $width, $height, $crop ) ) )
    567             return false;
    568 
    569         $resized_file = $editor->save();
    570 
    571         if ( ! is_wp_error( $resized_file ) && $resized_file ) {
    572             unset( $resized_file['path'] );
    573             return $resized_file;
    574         }
    575     }
    576     return false;
    577 }
    578 
    579 /**
    580  * Retrieves the image's intermediate size (resized) path, width, and height.
    581  *
    582  * The $size parameter can be an array with the width and height respectively.
    583  * If the size matches the 'sizes' metadata array for width and height, then it
    584  * will be used. If there is no direct match, then the nearest image size larger
    585  * than the specified size will be used. If nothing is found, then the function
    586  * will break out and return false.
    587  *
    588  * The metadata 'sizes' is used for compatible sizes that can be used for the
    589  * parameter $size value.
    590  *
    591  * The url path will be given, when the $size parameter is a string.
    592  *
    593  * If you are passing an array for the $size, you should consider using
    594  * add_image_size() so that a cropped version is generated. It's much more
    595  * efficient than having to find the closest-sized image and then having the
    596  * browser scale down the image.
    597  *
    598  * @since 2.5.0
    599  *
    600  * @param int          $post_id Attachment ID.
    601  * @param array|string $size    Optional. Registered image size to retrieve or flat array of height
    602  *                              and width dimensions. Default 'thumbnail'.
    603  * @return false|array False on failure or array of file path, width, and height on success.
    604  */
    605 function image_get_intermediate_size( $post_id, $size = 'thumbnail' ) {
    606     if ( !is_array( $imagedata = wp_get_attachment_metadata( $post_id ) ) )
    607         return false;
    608 
    609     // get the best one for a specified set of dimensions
    610     if ( is_array($size) && !empty($imagedata['sizes']) ) {
    611         $candidates = array();
    612 
    613         foreach ( $imagedata['sizes'] as $_size => $data ) {
    614             // If there's an exact match to an existing image size, short circuit.
    615             if ( $data['width'] == $size[0] && $data['height'] == $size[1] ) {
    616                 $file = $data['file'];
    617                 list($width, $height) = image_constrain_size_for_editor( $data['width'], $data['height'], $size );
    618                 return compact( 'file', 'width', 'height' );
    619             }
    620             // If it's not an exact match but it's at least the dimensions requested.
    621             if ( $data['width'] >= $size[0] && $data['height'] >= $size[1] ) {
    622                 $candidates[ $data['width'] * $data['height'] ] = $_size;
    623             }
    624         }
    625 
    626         if ( ! empty( $candidates ) ) {
    627             // find for the smallest image not smaller than the desired size
    628             ksort( $candidates );
    629             foreach ( $candidates as $_size ) {
    630                 $data = $imagedata['sizes'][$_size];
    631 
    632                 // Skip images with unexpectedly divergent aspect ratios (crops)
    633                 // First, we calculate what size the original image would be if constrained to a box the size of the current image in the loop
    634                 $maybe_cropped = image_resize_dimensions($imagedata['width'], $imagedata['height'], $data['width'], $data['height'], false );
    635                 // If the size doesn't match within one pixel, then it is of a different aspect ratio, so we skip it, unless it's the thumbnail size
    636                 if ( 'thumbnail' != $_size &&
    637                   ( ! $maybe_cropped
    638                     || ( $maybe_cropped[4] != $data['width'] && $maybe_cropped[4] + 1 != $data['width'] )
    639                     || ( $maybe_cropped[5] != $data['height'] && $maybe_cropped[5] + 1 != $data['height'] )
    640                   ) ) {
    641                   continue;
    642                 }
    643                 // If we're still here, then we're going to use this size
    644                 $file = $data['file'];
    645                 list( $width, $height ) = image_constrain_size_for_editor( $data['width'], $data['height'], $size );
    646                 return compact( 'file', 'width', 'height' );
    647             }
    648         }
    649     }
    650 
    651     if ( is_array($size) || empty($size) || empty($imagedata['sizes'][$size]) )
    652         return false;
    653 
    654     $data = $imagedata['sizes'][$size];
    655     // include the full filesystem path of the intermediate file
    656     if ( empty($data['path']) && !empty($data['file']) ) {
    657         $file_url = wp_get_attachment_url($post_id);
    658         $data['path'] = path_join( dirname($imagedata['file']), $data['file'] );
    659         $data['url'] = path_join( dirname($file_url), $data['file'] );
    660     }
    661     return $data;
    662 }
    663 
    664 /**
    665  * Gets the available intermediate image sizes.
    666  *
    667  * @since 3.0.0
    668  *
    669  * @global array $_wp_additional_image_sizes
    670  *
    671  * @return array Returns a filtered array of image size strings.
    672  */
    673 function get_intermediate_image_sizes() {
    674     global $_wp_additional_image_sizes;
    675     $image_sizes = array('thumbnail', 'medium', 'large'); // Standard sizes
    676     if ( isset( $_wp_additional_image_sizes ) && count( $_wp_additional_image_sizes ) )
    677         $image_sizes = array_merge( $image_sizes, array_keys( $_wp_additional_image_sizes ) );
    678 
    679     /**
    680      * Filter the list of intermediate image sizes.
    681      *
    682      * @since 2.5.0
    683      *
    684      * @param array $image_sizes An array of intermediate image sizes. Defaults
    685      *                           are 'thumbnail', 'medium', 'large'.
    686      */
    687     return apply_filters( 'intermediate_image_sizes', $image_sizes );
    688 }
    689 
    690 /**
    691  * Retrieve an image to represent an attachment.
    692  *
    693  * A mime icon for files, thumbnail or intermediate size for images.
    694  *
    695  * The returned array contains four values: the URL of the attachment image src,
    696  * the width of the image file, the height of the image file, and a boolean
    697  * representing whether the returned array describes an intermediate (generated)
    698  * image size or the original, full-sized upload.
    699  *
    700  * @since 2.5.0
    701  *
    702  * @param int          $attachment_id Image attachment ID.
    703  * @param string|array $size          Optional. Registered image size to retrieve the source for or a flat
    704  *                                    array of height and width dimensions. Default 'thumbnail'.
    705  * @param bool         $icon          Optional. Whether the image should be treated as an icon. Default false.
    706  * @return false|array Returns an array (url, width, height, is_intermediate), or false, if no image is available.
    707  */
    708 function wp_get_attachment_image_src( $attachment_id, $size = 'thumbnail', $icon = false ) {
    709     // get a thumbnail or intermediate image if there is one
    710     $image = image_downsize( $attachment_id, $size );
    711     if ( ! $image ) {
    712         $src = false;
    713 
    714         if ( $icon && $src = wp_mime_type_icon( $attachment_id ) ) {
    715             /** This filter is documented in wp-includes/post-functions.php */
    716             $icon_dir = apply_filters( 'icon_dir', ABSPATH . WPINC . '/images/media' );
    717 
    718             $src_file = $icon_dir . '/' . wp_basename( $src );
    719             @list( $width, $height ) = getimagesize( $src_file );
    720         }
    721 
    722         if ( $src && $width && $height ) {
    723             $image = array( $src, $width, $height );
    724         }
    725     }
    726     /**
    727      * Filter the image src result.
    728      *
    729      * @since 4.3.0
    730      *
    731      * @param array|false  $image         Either array with src, width & height, icon src, or false.
    732      * @param int          $attachment_id Image attachment ID.
    733      * @param string|array $size          Registered image size to retrieve the source for or a flat
    734      *                                    array of height and width dimensions. Default 'thumbnail'.
    735      * @param bool         $icon          Whether the image should be treated as an icon. Default false.
    736      */
    737     return apply_filters( 'wp_get_attachment_image_src', $image, $attachment_id, $size, $icon );
    738 }
    739 
    740 /**
    741  * Get an HTML img element representing an image attachment
    742  *
    743  * While `$size` will accept an array, it is better to register a size with
    744  * add_image_size() so that a cropped version is generated. It's much more
    745  * efficient than having to find the closest-sized image and then having the
    746  * browser scale down the image.
    747  *
    748  * @since 2.5.0
    749  *
    750  * @param int          $attachment_id Image attachment ID.
    751  * @param string|array $size          Optional. Registered image size or flat array of height and width
    752  *                                    dimensions. Default 'thumbnail'.
    753  * @param bool         $icon          Optional. Whether the image should be treated as an icon. Default false.
    754  * @param string|array $attr          Optional. Attributes for the image markup. Default empty.
    755  * @return string HTML img element or empty string on failure.
    756  */
    757 function wp_get_attachment_image($attachment_id, $size = 'thumbnail', $icon = false, $attr = '') {
    758     $html = '';
    759     $image = wp_get_attachment_image_src($attachment_id, $size, $icon);
    760     if ( $image ) {
    761         list($src, $width, $height) = $image;
    762         $hwstring = image_hwstring($width, $height);
    763         $size_class = $size;
    764         if ( is_array( $size_class ) ) {
    765             $size_class = join( 'x', $size_class );
    766         }
    767         $attachment = get_post($attachment_id);
    768         $default_attr = array(
    769             'src'   => $src,
    770             'class' => "attachment-$size_class size-$size_class",
    771             'alt'   => trim(strip_tags( get_post_meta($attachment_id, '_wp_attachment_image_alt', true) )), // Use Alt field first
    772         );
    773         if ( empty($default_attr['alt']) )
    774             $default_attr['alt'] = trim(strip_tags( $attachment->post_excerpt )); // If not, Use the Caption
    775         if ( empty($default_attr['alt']) )
    776             $default_attr['alt'] = trim(strip_tags( $attachment->post_title )); // Finally, use the title
    777 
    778         $attr = wp_parse_args($attr, $default_attr);
    779 
    780         /**
    781          * Filter the list of attachment image attributes.
    782          *
    783          * @since 2.8.0
    784          *
    785          * @param array        $attr       Attributes for the image markup.
    786          * @param WP_Post      $attachment Image attachment post.
    787          * @param string|array $size       Requested size.
    788          */
    789         $attr = apply_filters( 'wp_get_attachment_image_attributes', $attr, $attachment, $size );
    790         $attr = array_map( 'esc_attr', $attr );
    791         $html = rtrim("<img $hwstring");
    792         foreach ( $attr as $name => $value ) {
    793             $html .= " $name=" . '"' . $value . '"';
    794         }
    795         $html .= ' />';
    796     }
    797 
    798     return $html;
    799 }
    800 
    801 /**
    802  * Get the URL of an image attachment.
    803  *
     6 * @subpackage oEmbed
    8047 * @since 4.4.0
    805  *
    806  * @param int          $attachment_id Image attachment ID.
    807  * @param string|array $size          Optional. Registered image size to retrieve the source for or a flat
    808  *                                    array of height and width dimensions. Default 'thumbnail'.
    809  * @param bool         $icon          Optional. Whether the image should be treated as an icon. Default false.
    810  * @return string|false Attachment URL or false if no image is available.
    811  */
    812 function wp_get_attachment_image_url( $attachment_id, $size = 'thumbnail', $icon = false ) {
    813     $image = wp_get_attachment_image_src( $attachment_id, $size, $icon );
    814     return isset( $image['0'] ) ? $image['0'] : false;
    815 }
    816 
    817 /**
    818  * Adds a 'wp-post-image' class to post thumbnails. Internal use only.
    819  *
    820  * Uses the 'begin_fetch_post_thumbnail_html' and 'end_fetch_post_thumbnail_html' action hooks to
    821  * dynamically add/remove itself so as to only filter post thumbnails.
    822  *
    823  * @ignore
    824  * @since 2.9.0
    825  *
    826  * @param array $attr Thumbnail attributes including src, class, alt, title.
    827  * @return array Modified array of attributes including the new 'wp-post-image' class.
    828  */
    829 function _wp_post_thumbnail_class_filter( $attr ) {
    830     $attr['class'] .= ' wp-post-image';
    831     return $attr;
    832 }
    833 
    834 /**
    835  * Adds '_wp_post_thumbnail_class_filter' callback to the 'wp_get_attachment_image_attributes'
    836  * filter hook. Internal use only.
    837  *
    838  * @ignore
    839  * @since 2.9.0
    840  *
    841  * @param array $attr Thumbnail attributes including src, class, alt, title.
    842  */
    843 function _wp_post_thumbnail_class_filter_add( $attr ) {
    844     add_filter( 'wp_get_attachment_image_attributes', '_wp_post_thumbnail_class_filter' );
    845 }
    846 
    847 /**
    848  * Removes the '_wp_post_thumbnail_class_filter' callback from the 'wp_get_attachment_image_attributes'
    849  * filter hook. Internal use only.
    850  *
    851  * @ignore
    852  * @since 2.9.0
    853  *
    854  * @param array $attr Thumbnail attributes including src, class, alt, title.
    855  */
    856 function _wp_post_thumbnail_class_filter_remove( $attr ) {
    857     remove_filter( 'wp_get_attachment_image_attributes', '_wp_post_thumbnail_class_filter' );
    858 }
    859 
    860 add_shortcode('wp_caption', 'img_caption_shortcode');
    861 add_shortcode('caption', 'img_caption_shortcode');
    862 
    863 /**
    864  * Builds the Caption shortcode output.
    865  *
    866  * Allows a plugin to replace the content that would otherwise be returned. The
    867  * filter is 'img_caption_shortcode' and passes an empty string, the attr
    868  * parameter and the content parameter values.
    869  *
    870  * The supported attributes for the shortcode are 'id', 'align', 'width', and
    871  * 'caption'.
    872  *
    873  * @since 2.6.0
    874  *
    875  * @param array  $attr {
    876  *     Attributes of the caption shortcode.
    877  *
    878  *     @type string $id      ID of the div element for the caption.
    879  *     @type string $align   Class name that aligns the caption. Default 'alignnone'. Accepts 'alignleft',
    880  *                           'aligncenter', alignright', 'alignnone'.
    881  *     @type int    $width   The width of the caption, in pixels.
    882  *     @type string $caption The caption text.
    883  *     @type string $class   Additional class name(s) added to the caption container.
    884  * }
    885  * @param string $content Shortcode content.
    886  * @return string HTML content to display the caption.
    887  */
    888 function img_caption_shortcode( $attr, $content = null ) {
    889     // New-style shortcode with the caption inside the shortcode with the link and image tags.
    890     if ( ! isset( $attr['caption'] ) ) {
    891         if ( preg_match( '#((?:<a [^>]+>\s*)?<img [^>]+>(?:\s*</a>)?)(.*)#is', $content, $matches ) ) {
    892             $content = $matches[1];
    893             $attr['caption'] = trim( $matches[2] );
    894         }
    895     } elseif ( strpos( $attr['caption'], '<' ) !== false ) {
    896         $attr['caption'] = wp_kses( $attr['caption'], 'post' );
    897     }
    898 
    899     /**
    900      * Filter the default caption shortcode output.
    901      *
    902      * If the filtered output isn't empty, it will be used instead of generating
    903      * the default caption template.
    904      *
    905      * @since 2.6.0
    906      *
    907      * @see img_caption_shortcode()
    908      *
    909      * @param string $output  The caption output. Default empty.
    910      * @param array  $attr    Attributes of the caption shortcode.
    911      * @param string $content The image element, possibly wrapped in a hyperlink.
    912      */
    913     $output = apply_filters( 'img_caption_shortcode', '', $attr, $content );
    914     if ( $output != '' )
    915         return $output;
    916 
    917     $atts = shortcode_atts( array(
    918         'id'      => '',
    919         'align'   => 'alignnone',
    920         'width'   => '',
    921         'caption' => '',
    922         'class'   => '',
    923     ), $attr, 'caption' );
    924 
    925     $atts['width'] = (int) $atts['width'];
    926     if ( $atts['width'] < 1 || empty( $atts['caption'] ) )
    927         return $content;
    928 
    929     if ( ! empty( $atts['id'] ) )
    930         $atts['id'] = 'id="' . esc_attr( sanitize_html_class( $atts['id'] ) ) . '" ';
    931 
    932     $class = trim( 'wp-caption ' . $atts['align'] . ' ' . $atts['class'] );
    933 
    934     $html5 = current_theme_supports( 'html5', 'caption' );
    935     // HTML5 captions never added the extra 10px to the image width
    936     $width = $html5 ? $atts['width'] : ( 10 + $atts['width'] );
    937 
    938     /**
    939      * Filter the width of an image's caption.
    940      *
    941      * By default, the caption is 10 pixels greater than the width of the image,
    942      * to prevent post content from running up against a floated image.
    943      *
    944      * @since 3.7.0
    945      *
    946      * @see img_caption_shortcode()
    947      *
    948      * @param int    $width    Width of the caption in pixels. To remove this inline style,
    949      *                         return zero.
    950      * @param array  $atts     Attributes of the caption shortcode.
    951      * @param string $content  The image element, possibly wrapped in a hyperlink.
    952      */
    953     $caption_width = apply_filters( 'img_caption_shortcode_width', $width, $atts, $content );
    954 
    955     $style = '';
    956     if ( $caption_width )
    957         $style = 'style="width: ' . (int) $caption_width . 'px" ';
    958 
    959     $html = '';
    960     if ( $html5 ) {
    961         $html = '<figure ' . $atts['id'] . $style . 'class="' . esc_attr( $class ) . '">'
    962         . do_shortcode( $content ) . '<figcaption class="wp-caption-text">' . $atts['caption'] . '</figcaption></figure>';
    963     } else {
    964         $html = '<div ' . $atts['id'] . $style . 'class="' . esc_attr( $class ) . '">'
    965         . do_shortcode( $content ) . '<p class="wp-caption-text">' . $atts['caption'] . '</p></div>';
    966     }
    967 
    968     return $html;
    969 }
    970 
    971 add_shortcode('gallery', 'gallery_shortcode');
    972 
    973 /**
    974  * Builds the Gallery shortcode output.
    975  *
    976  * This implements the functionality of the Gallery Shortcode for displaying
    977  * WordPress images on a post.
    978  *
    979  * @since 2.5.0
    980  *
    981  * @staticvar int $instance
    982  *
    983  * @param array $attr {
    984  *     Attributes of the gallery shortcode.
    985  *
    986  *     @type string $order      Order of the images in the gallery. Default 'ASC'. Accepts 'ASC', 'DESC'.
    987  *     @type string $orderby    The field to use when ordering the images. Default 'menu_order ID'.
    988  *                              Accepts any valid SQL ORDERBY statement.
    989  *     @type int    $id         Post ID.
    990  *     @type string $itemtag    HTML tag to use for each image in the gallery.
    991  *                              Default 'dl', or 'figure' when the theme registers HTML5 gallery support.
    992  *     @type string $icontag    HTML tag to use for each image's icon.
    993  *                              Default 'dt', or 'div' when the theme registers HTML5 gallery support.
    994  *     @type string $captiontag HTML tag to use for each image's caption.
    995  *                              Default 'dd', or 'figcaption' when the theme registers HTML5 gallery support.
    996  *     @type int    $columns    Number of columns of images to display. Default 3.
    997  *     @type string $size       Size of the images to display. Default 'thumbnail'.
    998  *     @type string $ids        A comma-separated list of IDs of attachments to display. Default empty.
    999  *     @type string $include    A comma-separated list of IDs of attachments to include. Default empty.
    1000  *     @type string $exclude    A comma-separated list of IDs of attachments to exclude. Default empty.
    1001  *     @type string $link       What to link each image to. Default empty (links to the attachment page).
    1002  *                              Accepts 'file', 'none'.
    1003  * }
    1004  * @return string HTML content to display gallery.
    1005  */
    1006 function gallery_shortcode( $attr ) {
    1007     $post = get_post();
    1008 
    1009     static $instance = 0;
    1010     $instance++;
    1011 
    1012     if ( ! empty( $attr['ids'] ) ) {
    1013         // 'ids' is explicitly ordered, unless you specify otherwise.
    1014         if ( empty( $attr['orderby'] ) ) {
    1015             $attr['orderby'] = 'post__in';
    1016         }
    1017         $attr['include'] = $attr['ids'];
    1018     }
    1019 
    1020     /**
    1021      * Filter the default gallery shortcode output.
    1022      *
    1023      * If the filtered output isn't empty, it will be used instead of generating
    1024      * the default gallery template.
    1025      *
    1026      * @since 2.5.0
    1027      * @since 4.2.0 The `$instance` parameter was added.
    1028      *
    1029      * @see gallery_shortcode()
    1030      *
    1031      * @param string $output   The gallery output. Default empty.
    1032      * @param array  $attr     Attributes of the gallery shortcode.
    1033      * @param int    $instance Unique numeric ID of this gallery shortcode instance.
    1034      */
    1035     $output = apply_filters( 'post_gallery', '', $attr, $instance );
    1036     if ( $output != '' ) {
    1037         return $output;
    1038     }
    1039 
    1040     $html5 = current_theme_supports( 'html5', 'gallery' );
    1041     $atts = shortcode_atts( array(
    1042         'order'      => 'ASC',
    1043         'orderby'    => 'menu_order ID',
    1044         'id'         => $post ? $post->ID : 0,
    1045         'itemtag'    => $html5 ? 'figure'     : 'dl',
    1046         'icontag'    => $html5 ? 'div'        : 'dt',
    1047         'captiontag' => $html5 ? 'figcaption' : 'dd',
    1048         'columns'    => 3,
    1049         'size'       => 'thumbnail',
    1050         'include'    => '',
    1051         'exclude'    => '',
    1052         'link'       => ''
    1053     ), $attr, 'gallery' );
    1054 
    1055     $id = intval( $atts['id'] );
    1056 
    1057     if ( ! empty( $atts['include'] ) ) {
    1058         $_attachments = get_posts( array( 'include' => $atts['include'], 'post_status' => 'inherit', 'post_type' => 'attachment', 'post_mime_type' => 'image', 'order' => $atts['order'], 'orderby' => $atts['orderby'] ) );
    1059 
    1060         $attachments = array();
    1061         foreach ( $_attachments as $key => $val ) {
    1062             $attachments[$val->ID] = $_attachments[$key];
    1063         }
    1064     } elseif ( ! empty( $atts['exclude'] ) ) {
    1065         $attachments = get_children( array( 'post_parent' => $id, 'exclude' => $atts['exclude'], 'post_status' => 'inherit', 'post_type' => 'attachment', 'post_mime_type' => 'image', 'order' => $atts['order'], 'orderby' => $atts['orderby'] ) );
    1066     } else {
    1067         $attachments = get_children( array( 'post_parent' => $id, 'post_status' => 'inherit', 'post_type' => 'attachment', 'post_mime_type' => 'image', 'order' => $atts['order'], 'orderby' => $atts['orderby'] ) );
    1068     }
    1069 
    1070     if ( empty( $attachments ) ) {
    1071         return '';
    1072     }
    1073 
    1074     if ( is_feed() ) {
    1075         $output = "\n";
    1076         foreach ( $attachments as $att_id => $attachment ) {
    1077             $output .= wp_get_attachment_link( $att_id, $atts['size'], true ) . "\n";
    1078         }
    1079         return $output;
    1080     }
    1081 
    1082     $itemtag = tag_escape( $atts['itemtag'] );
    1083     $captiontag = tag_escape( $atts['captiontag'] );
    1084     $icontag = tag_escape( $atts['icontag'] );
    1085     $valid_tags = wp_kses_allowed_html( 'post' );
    1086     if ( ! isset( $valid_tags[ $itemtag ] ) ) {
    1087         $itemtag = 'dl';
    1088     }
    1089     if ( ! isset( $valid_tags[ $captiontag ] ) ) {
    1090         $captiontag = 'dd';
    1091     }
    1092     if ( ! isset( $valid_tags[ $icontag ] ) ) {
    1093         $icontag = 'dt';
    1094     }
    1095 
    1096     $columns = intval( $atts['columns'] );
    1097     $itemwidth = $columns > 0 ? floor(100/$columns) : 100;
    1098     $float = is_rtl() ? 'right' : 'left';
    1099 
    1100     $selector = "gallery-{$instance}";
    1101 
    1102     $gallery_style = '';
    1103 
    1104     /**
    1105      * Filter whether to print default gallery styles.
    1106      *
    1107      * @since 3.1.0
    1108      *
    1109      * @param bool $print Whether to print default gallery styles.
    1110      *                    Defaults to false if the theme supports HTML5 galleries.
    1111      *                    Otherwise, defaults to true.
    1112      */
    1113     if ( apply_filters( 'use_default_gallery_style', ! $html5 ) ) {
    1114         $gallery_style = "
    1115         <style type='text/css'>
    1116             #{$selector} {
    1117                 margin: auto;
    1118             }
    1119             #{$selector} .gallery-item {
    1120                 float: {$float};
    1121                 margin-top: 10px;
    1122                 text-align: center;
    1123                 width: {$itemwidth}%;
    1124             }
    1125             #{$selector} img {
    1126                 border: 2px solid #cfcfcf;
    1127             }
    1128             #{$selector} .gallery-caption {
    1129                 margin-left: 0;
    1130             }
    1131             /* see gallery_shortcode() in wp-includes/media.php */
    1132         </style>\n\t\t";
    1133     }
    1134 
    1135     $size_class = sanitize_html_class( $atts['size'] );
    1136     $gallery_div = "<div id='$selector' class='gallery galleryid-{$id} gallery-columns-{$columns} gallery-size-{$size_class}'>";
    1137 
    1138     /**
    1139      * Filter the default gallery shortcode CSS styles.
    1140      *
    1141      * @since 2.5.0
    1142      *
    1143      * @param string $gallery_style Default CSS styles and opening HTML div container
    1144      *                              for the gallery shortcode output.
    1145      */
    1146     $output = apply_filters( 'gallery_style', $gallery_style . $gallery_div );
    1147 
    1148     $i = 0;
    1149     foreach ( $attachments as $id => $attachment ) {
    1150 
    1151         $attr = ( trim( $attachment->post_excerpt ) ) ? array( 'aria-describedby' => "$selector-$id" ) : '';
    1152         if ( ! empty( $atts['link'] ) && 'file' === $atts['link'] ) {
    1153             $image_output = wp_get_attachment_link( $id, $atts['size'], false, false, false, $attr );
    1154         } elseif ( ! empty( $atts['link'] ) && 'none' === $atts['link'] ) {
    1155             $image_output = wp_get_attachment_image( $id, $atts['size'], false, $attr );
    1156         } else {
    1157             $image_output = wp_get_attachment_link( $id, $atts['size'], true, false, false, $attr );
    1158         }
    1159         $image_meta  = wp_get_attachment_metadata( $id );
    1160 
    1161         $orientation = '';
    1162         if ( isset( $image_meta['height'], $image_meta['width'] ) ) {
    1163             $orientation = ( $image_meta['height'] > $image_meta['width'] ) ? 'portrait' : 'landscape';
    1164         }
    1165         $output .= "<{$itemtag} class='gallery-item'>";
    1166         $output .= "
    1167             <{$icontag} class='gallery-icon {$orientation}'>
    1168                 $image_output
    1169             </{$icontag}>";
    1170         if ( $captiontag && trim($attachment->post_excerpt) ) {
    1171             $output .= "
    1172                 <{$captiontag} class='wp-caption-text gallery-caption' id='$selector-$id'>
    1173                 " . wptexturize($attachment->post_excerpt) . "
    1174                 </{$captiontag}>";
    1175         }
    1176         $output .= "</{$itemtag}>";
    1177         if ( ! $html5 && $columns > 0 && ++$i % $columns == 0 ) {
    1178             $output .= '<br style="clear: both" />';
    1179         }
    1180     }
    1181 
    1182     if ( ! $html5 && $columns > 0 && $i % $columns !== 0 ) {
    1183         $output .= "
    1184             <br style='clear: both' />";
    1185     }
    1186 
    1187     $output .= "
    1188         </div>\n";
    1189 
    1190     return $output;
    1191 }
    1192 
    1193 /**
    1194  * Outputs the templates used by playlists.
    1195  *
    1196  * @since 3.9.0
    1197  */
    1198 function wp_underscore_playlist_templates() {
    1199 ?>
    1200 <script type="text/html" id="tmpl-wp-playlist-current-item">
    1201     <# if ( data.image ) { #>
    1202     <img src="{{ data.thumb.src }}"/>
    1203     <# } #>
    1204     <div class="wp-playlist-caption">
    1205         <span class="wp-playlist-item-meta wp-playlist-item-title"><?php
    1206             /* translators: playlist item title */
    1207             printf( _x( '&#8220;%s&#8221;', 'playlist item title' ), '{{ data.title }}' );
    1208         ?></span>
    1209         <# if ( data.meta.album ) { #><span class="wp-playlist-item-meta wp-playlist-item-album">{{ data.meta.album }}</span><# } #>
    1210         <# if ( data.meta.artist ) { #><span class="wp-playlist-item-meta wp-playlist-item-artist">{{ data.meta.artist }}</span><# } #>
    1211     </div>
    1212 </script>
    1213 <script type="text/html" id="tmpl-wp-playlist-item">
    1214     <div class="wp-playlist-item">
    1215         <a class="wp-playlist-caption" href="{{ data.src }}">
    1216             {{ data.index ? ( data.index + '. ' ) : '' }}
    1217             <# if ( data.caption ) { #>
    1218                 {{ data.caption }}
    1219             <# } else { #>
    1220                 <span class="wp-playlist-item-title"><?php
    1221                     /* translators: playlist item title */
    1222                     printf( _x( '&#8220;%s&#8221;', 'playlist item title' ), '{{{ data.title }}}' );
    1223                 ?></span>
    1224                 <# if ( data.artists && data.meta.artist ) { #>
    1225                 <span class="wp-playlist-item-artist"> &mdash; {{ data.meta.artist }}</span>
    1226                 <# } #>
    1227             <# } #>
    1228         </a>
    1229         <# if ( data.meta.length_formatted ) { #>
    1230         <div class="wp-playlist-item-length">{{ data.meta.length_formatted }}</div>
    1231         <# } #>
    1232     </div>
    1233 </script>
    1234 <?php
    1235 }
    1236 
    1237 /**
    1238  * Outputs and enqueue default scripts and styles for playlists.
    1239  *
    1240  * @since 3.9.0
    1241  *
    1242  * @param string $type Type of playlist. Accepts 'audio' or 'video'.
    1243  */
    1244 function wp_playlist_scripts( $type ) {
    1245     wp_enqueue_style( 'wp-mediaelement' );
    1246     wp_enqueue_script( 'wp-playlist' );
    1247 ?>
    1248 <!--[if lt IE 9]><script>document.createElement('<?php echo esc_js( $type ) ?>');</script><![endif]-->
    1249 <?php
    1250     add_action( 'wp_footer', 'wp_underscore_playlist_templates', 0 );
    1251     add_action( 'admin_footer', 'wp_underscore_playlist_templates', 0 );
    1252 }
    1253 
    1254 /**
    1255  * Builds the Playlist shortcode output.
    1256  *
    1257  * This implements the functionality of the playlist shortcode for displaying
    1258  * a collection of WordPress audio or video files in a post.
    1259  *
    1260  * @since 3.9.0
    1261  *
    1262  * @global int $content_width
    1263  * @staticvar int $instance
    1264  *
    1265  * @param array $attr {
    1266  *     Array of default playlist attributes.
    1267  *
    1268  *     @type string  $type         Type of playlist to display. Accepts 'audio' or 'video'. Default 'audio'.
    1269  *     @type string  $order        Designates ascending or descending order of items in the playlist.
    1270  *                                 Accepts 'ASC', 'DESC'. Default 'ASC'.
    1271  *     @type string  $orderby      Any column, or columns, to sort the playlist. If $ids are
    1272  *                                 passed, this defaults to the order of the $ids array ('post__in').
    1273  *                                 Otherwise default is 'menu_order ID'.
    1274  *     @type int     $id           If an explicit $ids array is not present, this parameter
    1275  *                                 will determine which attachments are used for the playlist.
    1276  *                                 Default is the current post ID.
    1277  *     @type array   $ids          Create a playlist out of these explicit attachment IDs. If empty,
    1278  *                                 a playlist will be created from all $type attachments of $id.
    1279  *                                 Default empty.
    1280  *     @type array   $exclude      List of specific attachment IDs to exclude from the playlist. Default empty.
    1281  *     @type string  $style        Playlist style to use. Accepts 'light' or 'dark'. Default 'light'.
    1282  *     @type bool    $tracklist    Whether to show or hide the playlist. Default true.
    1283  *     @type bool    $tracknumbers Whether to show or hide the numbers next to entries in the playlist. Default true.
    1284  *     @type bool    $images       Show or hide the video or audio thumbnail (Featured Image/post
    1285  *                                 thumbnail). Default true.
    1286  *     @type bool    $artists      Whether to show or hide artist name in the playlist. Default true.
    1287  * }
    1288  *
    1289  * @return string Playlist output. Empty string if the passed type is unsupported.
    1290  */
    1291 function wp_playlist_shortcode( $attr ) {
    1292     global $content_width;
    1293     $post = get_post();
    1294 
    1295     static $instance = 0;
    1296     $instance++;
    1297 
    1298     if ( ! empty( $attr['ids'] ) ) {
    1299         // 'ids' is explicitly ordered, unless you specify otherwise.
    1300         if ( empty( $attr['orderby'] ) ) {
    1301             $attr['orderby'] = 'post__in';
    1302         }
    1303         $attr['include'] = $attr['ids'];
    1304     }
    1305 
    1306     /**
    1307      * Filter the playlist output.
    1308      *
    1309      * Passing a non-empty value to the filter will short-circuit generation
    1310      * of the default playlist output, returning the passed value instead.
    1311      *
    1312      * @since 3.9.0
    1313      * @since 4.2.0 The `$instance` parameter was added.
    1314      *
    1315      * @param string $output   Playlist output. Default empty.
    1316      * @param array  $attr     An array of shortcode attributes.
    1317      * @param int    $instance Unique numeric ID of this playlist shortcode instance.
    1318      */
    1319     $output = apply_filters( 'post_playlist', '', $attr, $instance );
    1320     if ( $output != '' ) {
    1321         return $output;
    1322     }
    1323 
    1324     $atts = shortcode_atts( array(
    1325         'type'      => 'audio',
    1326         'order'     => 'ASC',
    1327         'orderby'   => 'menu_order ID',
    1328         'id'        => $post ? $post->ID : 0,
    1329         'include'   => '',
    1330         'exclude'   => '',
    1331         'style'     => 'light',
    1332         'tracklist' => true,
    1333         'tracknumbers' => true,
    1334         'images'    => true,
    1335         'artists'   => true
    1336     ), $attr, 'playlist' );
    1337 
    1338     $id = intval( $atts['id'] );
    1339 
    1340     if ( $atts['type'] !== 'audio' ) {
    1341         $atts['type'] = 'video';
    1342     }
    1343 
    1344     $args = array(
    1345         'post_status' => 'inherit',
    1346         'post_type' => 'attachment',
    1347         'post_mime_type' => $atts['type'],
    1348         'order' => $atts['order'],
    1349         'orderby' => $atts['orderby']
    1350     );
    1351 
    1352     if ( ! empty( $atts['include'] ) ) {
    1353         $args['include'] = $atts['include'];
    1354         $_attachments = get_posts( $args );
    1355 
    1356         $attachments = array();
    1357         foreach ( $_attachments as $key => $val ) {
    1358             $attachments[$val->ID] = $_attachments[$key];
    1359         }
    1360     } elseif ( ! empty( $atts['exclude'] ) ) {
    1361         $args['post_parent'] = $id;
    1362         $args['exclude'] = $atts['exclude'];
    1363         $attachments = get_children( $args );
    1364     } else {
    1365         $args['post_parent'] = $id;
    1366         $attachments = get_children( $args );
    1367     }
    1368 
    1369     if ( empty( $attachments ) ) {
    1370         return '';
    1371     }
    1372 
    1373     if ( is_feed() ) {
    1374         $output = "\n";
    1375         foreach ( $attachments as $att_id => $attachment ) {
    1376             $output .= wp_get_attachment_link( $att_id ) . "\n";
    1377         }
    1378         return $output;
    1379     }
    1380 
    1381     $outer = 22; // default padding and border of wrapper
    1382 
    1383     $default_width = 640;
    1384     $default_height = 360;
    1385 
    1386     $theme_width = empty( $content_width ) ? $default_width : ( $content_width - $outer );
    1387     $theme_height = empty( $content_width ) ? $default_height : round( ( $default_height * $theme_width ) / $default_width );
    1388 
    1389     $data = array(
    1390         'type' => $atts['type'],
    1391         // don't pass strings to JSON, will be truthy in JS
    1392         'tracklist' => wp_validate_boolean( $atts['tracklist'] ),
    1393         'tracknumbers' => wp_validate_boolean( $atts['tracknumbers'] ),
    1394         'images' => wp_validate_boolean( $atts['images'] ),
    1395         'artists' => wp_validate_boolean( $atts['artists'] ),
    1396     );
    1397 
    1398     $tracks = array();
    1399     foreach ( $attachments as $attachment ) {
    1400         $url = wp_get_attachment_url( $attachment->ID );
    1401         $ftype = wp_check_filetype( $url, wp_get_mime_types() );
    1402         $track = array(
    1403             'src' => $url,
    1404             'type' => $ftype['type'],
    1405             'title' => $attachment->post_title,
    1406             'caption' => $attachment->post_excerpt,
    1407             'description' => $attachment->post_content
    1408         );
    1409 
    1410         $track['meta'] = array();
    1411         $meta = wp_get_attachment_metadata( $attachment->ID );
    1412         if ( ! empty( $meta ) ) {
    1413 
    1414             foreach ( wp_get_attachment_id3_keys( $attachment ) as $key => $label ) {
    1415                 if ( ! empty( $meta[ $key ] ) ) {
    1416                     $track['meta'][ $key ] = $meta[ $key ];
    1417                 }
    1418             }
    1419 
    1420             if ( 'video' === $atts['type'] ) {
    1421                 if ( ! empty( $meta['width'] ) && ! empty( $meta['height'] ) ) {
    1422                     $width = $meta['width'];
    1423                     $height = $meta['height'];
    1424                     $theme_height = round( ( $height * $theme_width ) / $width );
    1425                 } else {
    1426                     $width = $default_width;
    1427                     $height = $default_height;
    1428                 }
    1429 
    1430                 $track['dimensions'] = array(
    1431                     'original' => compact( 'width', 'height' ),
    1432                     'resized' => array(
    1433                         'width' => $theme_width,
    1434                         'height' => $theme_height
    1435                     )
    1436                 );
    1437             }
    1438         }
    1439 
    1440         if ( $atts['images'] ) {
    1441             $thumb_id = get_post_thumbnail_id( $attachment->ID );
    1442             if ( ! empty( $thumb_id ) ) {
    1443                 list( $src, $width, $height ) = wp_get_attachment_image_src( $thumb_id, 'full' );
    1444                 $track['image'] = compact( 'src', 'width', 'height' );
    1445                 list( $src, $width, $height ) = wp_get_attachment_image_src( $thumb_id, 'thumbnail' );
    1446                 $track['thumb'] = compact( 'src', 'width', 'height' );
    1447             } else {
    1448                 $src = wp_mime_type_icon( $attachment->ID );
    1449                 $width = 48;
    1450                 $height = 64;
    1451                 $track['image'] = compact( 'src', 'width', 'height' );
    1452                 $track['thumb'] = compact( 'src', 'width', 'height' );
    1453             }
    1454         }
    1455 
    1456         $tracks[] = $track;
    1457     }
    1458     $data['tracks'] = $tracks;
    1459 
    1460     $safe_type = esc_attr( $atts['type'] );
    1461     $safe_style = esc_attr( $atts['style'] );
    1462 
    1463     ob_start();
    1464 
    1465     if ( 1 === $instance ) {
    1466         /**
    1467          * Print and enqueue playlist scripts, styles, and JavaScript templates.
    1468          *
    1469          * @since 3.9.0
    1470          *
    1471          * @param string $type  Type of playlist. Possible values are 'audio' or 'video'.
    1472          * @param string $style The 'theme' for the playlist. Core provides 'light' and 'dark'.
    1473          */
    1474         do_action( 'wp_playlist_scripts', $atts['type'], $atts['style'] );
    1475     } ?>
    1476 <div class="wp-playlist wp-<?php echo $safe_type ?>-playlist wp-playlist-<?php echo $safe_style ?>">
    1477     <?php if ( 'audio' === $atts['type'] ): ?>
    1478     <div class="wp-playlist-current-item"></div>
    1479     <?php endif ?>
    1480     <<?php echo $safe_type ?> controls="controls" preload="none" width="<?php
    1481         echo (int) $theme_width;
    1482     ?>"<?php if ( 'video' === $safe_type ):
    1483         echo ' height="', (int) $theme_height, '"';
    1484     else:
    1485         echo ' style="visibility: hidden"';
    1486     endif; ?>></<?php echo $safe_type ?>>
    1487     <div class="wp-playlist-next"></div>
    1488     <div class="wp-playlist-prev"></div>
    1489     <noscript>
    1490     <ol><?php
    1491     foreach ( $attachments as $att_id => $attachment ) {
    1492         printf( '<li>%s</li>', wp_get_attachment_link( $att_id ) );
    1493     }
    1494     ?></ol>
    1495     </noscript>
    1496     <script type="application/json" class="wp-playlist-script"><?php echo wp_json_encode( $data ) ?></script>
    1497 </div>
    1498     <?php
    1499     return ob_get_clean();
    1500 }
    1501 add_shortcode( 'playlist', 'wp_playlist_shortcode' );
    1502 
    1503 /**
    1504  * Provides a No-JS Flash fallback as a last resort for audio / video.
    1505  *
    1506  * @since 3.6.0
    1507  *
    1508  * @param string $url The media element URL.
    1509  * @return string Fallback HTML.
    1510  */
    1511 function wp_mediaelement_fallback( $url ) {
    1512     /**
    1513      * Filter the Mediaelement fallback output for no-JS.
    1514      *
    1515      * @since 3.6.0
    1516      *
    1517      * @param string $output Fallback output for no-JS.
    1518      * @param string $url    Media file URL.
    1519      */
    1520     return apply_filters( 'wp_mediaelement_fallback', sprintf( '<a href="%1$s">%1$s</a>', esc_url( $url ) ), $url );
    1521 }
    1522 
    1523 /**
    1524  * Returns a filtered list of WP-supported audio formats.
    1525  *
    1526  * @since 3.6.0
    1527  *
    1528  * @return array Supported audio formats.
    1529  */
    1530 function wp_get_audio_extensions() {
    1531     /**
    1532      * Filter the list of supported audio formats.
    1533      *
    1534      * @since 3.6.0
    1535      *
    1536      * @param array $extensions An array of support audio formats. Defaults are
    1537      *                          'mp3', 'ogg', 'wma', 'm4a', 'wav'.
    1538      */
    1539     return apply_filters( 'wp_audio_extensions', array( 'mp3', 'ogg', 'wma', 'm4a', 'wav' ) );
    1540 }
    1541 
    1542 /**
    1543  * Returns useful keys to use to lookup data from an attachment's stored metadata.
    1544  *
    1545  * @since 3.9.0
    1546  *
    1547  * @param WP_Post $attachment The current attachment, provided for context.
    1548  * @param string  $context    Optional. The context. Accepts 'edit', 'display'. Default 'display'.
    1549  * @return array Key/value pairs of field keys to labels.
    1550  */
    1551 function wp_get_attachment_id3_keys( $attachment, $context = 'display' ) {
    1552     $fields = array(
    1553         'artist' => __( 'Artist' ),
    1554         'album' => __( 'Album' ),
    1555     );
    1556 
    1557     if ( 'display' === $context ) {
    1558         $fields['genre']            = __( 'Genre' );
    1559         $fields['year']             = __( 'Year' );
    1560         $fields['length_formatted'] = _x( 'Length', 'video or audio' );
    1561     } elseif ( 'js' === $context ) {
    1562         $fields['bitrate']          = __( 'Bitrate' );
    1563         $fields['bitrate_mode']     = __( 'Bitrate Mode' );
    1564     }
    1565 
    1566     /**
    1567      * Filter the editable list of keys to look up data from an attachment's metadata.
    1568      *
    1569      * @since 3.9.0
    1570      *
    1571      * @param array   $fields     Key/value pairs of field keys to labels.
    1572      * @param WP_Post $attachment Attachment object.
    1573      * @param string  $context    The context. Accepts 'edit', 'display'. Default 'display'.
    1574      */
    1575     return apply_filters( 'wp_get_attachment_id3_keys', $fields, $attachment, $context );
    1576 }
    1577 /**
    1578  * Builds the Audio shortcode output.
    1579  *
    1580  * This implements the functionality of the Audio Shortcode for displaying
    1581  * WordPress mp3s in a post.
    1582  *
    1583  * @since 3.6.0
    1584  *
    1585  * @staticvar int $instance
    1586  *
    1587  * @param array  $attr {
    1588  *     Attributes of the audio shortcode.
    1589  *
    1590  *     @type string $src      URL to the source of the audio file. Default empty.
    1591  *     @type string $loop     The 'loop' attribute for the `<audio>` element. Default empty.
    1592  *     @type string $autoplay The 'autoplay' attribute for the `<audio>` element. Default empty.
    1593  *     @type string $preload  The 'preload' attribute for the `<audio>` element. Default empty.
    1594  *     @type string $class    The 'class' attribute for the `<audio>` element. Default 'wp-audio-shortcode'.
    1595  *     @type string $style    The 'style' attribute for the `<audio>` element. Default 'width: 100%'.
    1596  * }
    1597  * @param string $content Shortcode content.
    1598  * @return string|void HTML content to display audio.
    1599  */
    1600 function wp_audio_shortcode( $attr, $content = '' ) {
    1601     $post_id = get_post() ? get_the_ID() : 0;
    1602 
    1603     static $instance = 0;
    1604     $instance++;
    1605 
    1606     /**
    1607      * Filter the default audio shortcode output.
    1608      *
    1609      * If the filtered output isn't empty, it will be used instead of generating the default audio template.
    1610      *
    1611      * @since 3.6.0
    1612      *
    1613      * @param string $html     Empty variable to be replaced with shortcode markup.
    1614      * @param array  $attr     Attributes of the shortcode. @see wp_audio_shortcode()
    1615      * @param string $content  Shortcode content.
    1616      * @param int    $instance Unique numeric ID of this audio shortcode instance.
    1617      */
    1618     $override = apply_filters( 'wp_audio_shortcode_override', '', $attr, $content, $instance );
    1619     if ( '' !== $override ) {
    1620         return $override;
    1621     }
    1622 
    1623     $audio = null;
    1624 
    1625     $default_types = wp_get_audio_extensions();
    1626     $defaults_atts = array(
    1627         'src'      => '',
    1628         'loop'     => '',
    1629         'autoplay' => '',
    1630         'preload'  => 'none'
    1631     );
    1632     foreach ( $default_types as $type ) {
    1633         $defaults_atts[$type] = '';
    1634     }
    1635 
    1636     $atts = shortcode_atts( $defaults_atts, $attr, 'audio' );
    1637 
    1638     $primary = false;
    1639     if ( ! empty( $atts['src'] ) ) {
    1640         $type = wp_check_filetype( $atts['src'], wp_get_mime_types() );
    1641         if ( ! in_array( strtolower( $type['ext'] ), $default_types ) ) {
    1642             return sprintf( '<a class="wp-embedded-audio" href="%s">%s</a>', esc_url( $atts['src'] ), esc_html( $atts['src'] ) );
    1643         }
    1644         $primary = true;
    1645         array_unshift( $default_types, 'src' );
    1646     } else {
    1647         foreach ( $default_types as $ext ) {
    1648             if ( ! empty( $atts[ $ext ] ) ) {
    1649                 $type = wp_check_filetype( $atts[ $ext ], wp_get_mime_types() );
    1650                 if ( strtolower( $type['ext'] ) === $ext ) {
    1651                     $primary = true;
    1652                 }
    1653             }
    1654         }
    1655     }
    1656 
    1657     if ( ! $primary ) {
    1658         $audios = get_attached_media( 'audio', $post_id );
    1659         if ( empty( $audios ) ) {
    1660             return;
    1661         }
    1662 
    1663         $audio = reset( $audios );
    1664         $atts['src'] = wp_get_attachment_url( $audio->ID );
    1665         if ( empty( $atts['src'] ) ) {
    1666             return;
    1667         }
    1668 
    1669         array_unshift( $default_types, 'src' );
    1670     }
    1671 
    1672     /**
    1673      * Filter the media library used for the audio shortcode.
    1674      *
    1675      * @since 3.6.0
    1676      *
    1677      * @param string $library Media library used for the audio shortcode.
    1678      */
    1679     $library = apply_filters( 'wp_audio_shortcode_library', 'mediaelement' );
    1680     if ( 'mediaelement' === $library && did_action( 'init' ) ) {
    1681         wp_enqueue_style( 'wp-mediaelement' );
    1682         wp_enqueue_script( 'wp-mediaelement' );
    1683     }
    1684 
    1685     /**
    1686      * Filter the class attribute for the audio shortcode output container.
    1687      *
    1688      * @since 3.6.0
    1689      *
    1690      * @param string $class CSS class or list of space-separated classes.
    1691      */
    1692     $html_atts = array(
    1693         'class'    => apply_filters( 'wp_audio_shortcode_class', 'wp-audio-shortcode' ),
    1694         'id'       => sprintf( 'audio-%d-%d', $post_id, $instance ),
    1695         'loop'     => wp_validate_boolean( $atts['loop'] ),
    1696         'autoplay' => wp_validate_boolean( $atts['autoplay'] ),
    1697         'preload'  => $atts['preload'],
    1698         'style'    => 'width: 100%; visibility: hidden;',
    1699     );
    1700 
    1701     // These ones should just be omitted altogether if they are blank
    1702     foreach ( array( 'loop', 'autoplay', 'preload' ) as $a ) {
    1703         if ( empty( $html_atts[$a] ) ) {
    1704             unset( $html_atts[$a] );
    1705         }
    1706     }
    1707 
    1708     $attr_strings = array();
    1709     foreach ( $html_atts as $k => $v ) {
    1710         $attr_strings[] = $k . '="' . esc_attr( $v ) . '"';
    1711     }
    1712 
    1713     $html = '';
    1714     if ( 'mediaelement' === $library && 1 === $instance ) {
    1715         $html .= "<!--[if lt IE 9]><script>document.createElement('audio');</script><![endif]-->\n";
    1716     }
    1717     $html .= sprintf( '<audio %s controls="controls">', join( ' ', $attr_strings ) );
    1718 
    1719     $fileurl = '';
    1720     $source = '<source type="%s" src="%s" />';
    1721     foreach ( $default_types as $fallback ) {
    1722         if ( ! empty( $atts[ $fallback ] ) ) {
    1723             if ( empty( $fileurl ) ) {
    1724                 $fileurl = $atts[ $fallback ];
    1725             }
    1726             $type = wp_check_filetype( $atts[ $fallback ], wp_get_mime_types() );
    1727             $url = add_query_arg( '_', $instance, $atts[ $fallback ] );
    1728             $html .= sprintf( $source, $type['type'], esc_url( $url ) );
    1729         }
    1730     }
    1731 
    1732     if ( 'mediaelement' === $library ) {
    1733         $html .= wp_mediaelement_fallback( $fileurl );
    1734     }
    1735     $html .= '</audio>';
    1736 
    1737     /**
    1738      * Filter the audio shortcode output.
    1739      *
    1740      * @since 3.6.0
    1741      *
    1742      * @param string $html    Audio shortcode HTML output.
    1743      * @param array  $atts    Array of audio shortcode attributes.
    1744      * @param string $audio   Audio file.
    1745      * @param int    $post_id Post ID.
    1746      * @param string $library Media library used for the audio shortcode.
    1747      */
    1748     return apply_filters( 'wp_audio_shortcode', $html, $atts, $audio, $post_id, $library );
    1749 }
    1750 add_shortcode( 'audio', 'wp_audio_shortcode' );
    1751 
    1752 /**
    1753  * Returns a filtered list of WP-supported video formats.
    1754  *
    1755  * @since 3.6.0
    1756  *
    1757  * @return array List of supported video formats.
    1758  */
    1759 function wp_get_video_extensions() {
    1760     /**
    1761      * Filter the list of supported video formats.
    1762      *
    1763      * @since 3.6.0
    1764      *
    1765      * @param array $extensions An array of support video formats. Defaults are
    1766      *                          'mp4', 'm4v', 'webm', 'ogv', 'wmv', 'flv'.
    1767      */
    1768     return apply_filters( 'wp_video_extensions', array( 'mp4', 'm4v', 'webm', 'ogv', 'wmv', 'flv' ) );
    1769 }
    1770 
    1771 /**
    1772  * Builds the Video shortcode output.
    1773  *
    1774  * This implements the functionality of the Video Shortcode for displaying
    1775  * WordPress mp4s in a post.
    1776  *
    1777  * @since 3.6.0
    1778  *
    1779  * @global int $content_width
    1780  * @staticvar int $instance
    1781  *
    1782  * @param array  $attr {
    1783  *     Attributes of the shortcode.
    1784  *
    1785  *     @type string $src      URL to the source of the video file. Default empty.
    1786  *     @type int    $height   Height of the video embed in pixels. Default 360.
    1787  *     @type int    $width    Width of the video embed in pixels. Default $content_width or 640.
    1788  *     @type string $poster   The 'poster' attribute for the `<video>` element. Default empty.
    1789  *     @type string $loop     The 'loop' attribute for the `<video>` element. Default empty.
    1790  *     @type string $autoplay The 'autoplay' attribute for the `<video>` element. Default empty.
    1791  *     @type string $preload  The 'preload' attribute for the `<video>` element.
    1792  *                            Default 'metadata'.
    1793  *     @type string $class    The 'class' attribute for the `<video>` element.
    1794  *                            Default 'wp-video-shortcode'.
    1795  * }
    1796  * @param string $content Shortcode content.
    1797  * @return string|void HTML content to display video.
    1798  */
    1799 function wp_video_shortcode( $attr, $content = '' ) {
    1800     global $content_width;
    1801     $post_id = get_post() ? get_the_ID() : 0;
    1802 
    1803     static $instance = 0;
    1804     $instance++;
    1805 
    1806     /**
    1807      * Filter the default video shortcode output.
    1808      *
    1809      * If the filtered output isn't empty, it will be used instead of generating
    1810      * the default video template.
    1811      *
    1812      * @since 3.6.0
    1813      *
    1814      * @see wp_video_shortcode()
    1815      *
    1816      * @param string $html     Empty variable to be replaced with shortcode markup.
    1817      * @param array  $attr     Attributes of the video shortcode.
    1818      * @param string $content  Video shortcode content.
    1819      * @param int    $instance Unique numeric ID of this video shortcode instance.
    1820      */
    1821     $override = apply_filters( 'wp_video_shortcode_override', '', $attr, $content, $instance );
    1822     if ( '' !== $override ) {
    1823         return $override;
    1824     }
    1825 
    1826     $video = null;
    1827 
    1828     $default_types = wp_get_video_extensions();
    1829     $defaults_atts = array(
    1830         'src'      => '',
    1831         'poster'   => '',
    1832         'loop'     => '',
    1833         'autoplay' => '',
    1834         'preload'  => 'metadata',
    1835         'width'    => 640,
    1836         'height'   => 360,
    1837     );
    1838 
    1839     foreach ( $default_types as $type ) {
    1840         $defaults_atts[$type] = '';
    1841     }
    1842 
    1843     $atts = shortcode_atts( $defaults_atts, $attr, 'video' );
    1844 
    1845     if ( is_admin() ) {
    1846         // shrink the video so it isn't huge in the admin
    1847         if ( $atts['width'] > $defaults_atts['width'] ) {
    1848             $atts['height'] = round( ( $atts['height'] * $defaults_atts['width'] ) / $atts['width'] );
    1849             $atts['width'] = $defaults_atts['width'];
    1850         }
    1851     } else {
    1852         // if the video is bigger than the theme
    1853         if ( ! empty( $content_width ) && $atts['width'] > $content_width ) {
    1854             $atts['height'] = round( ( $atts['height'] * $content_width ) / $atts['width'] );
    1855             $atts['width'] = $content_width;
    1856         }
    1857     }
    1858 
    1859     $is_vimeo = $is_youtube = false;
    1860     $yt_pattern = '#^https?://(?:www\.)?(?:youtube\.com/watch|youtu\.be/)#';
    1861     $vimeo_pattern = '#^https?://(.+\.)?vimeo\.com/.*#';
    1862 
    1863     $primary = false;
    1864     if ( ! empty( $atts['src'] ) ) {
    1865         $is_vimeo = ( preg_match( $vimeo_pattern, $atts['src'] ) );
    1866         $is_youtube = (  preg_match( $yt_pattern, $atts['src'] ) );
    1867         if ( ! $is_youtube && ! $is_vimeo ) {
    1868             $type = wp_check_filetype( $atts['src'], wp_get_mime_types() );
    1869             if ( ! in_array( strtolower( $type['ext'] ), $default_types ) ) {
    1870                 return sprintf( '<a class="wp-embedded-video" href="%s">%s</a>', esc_url( $atts['src'] ), esc_html( $atts['src'] ) );
    1871             }
    1872         }
    1873 
    1874         if ( $is_vimeo ) {
    1875             wp_enqueue_script( 'froogaloop' );
    1876         }
    1877 
    1878         $primary = true;
    1879         array_unshift( $default_types, 'src' );
    1880     } else {
    1881         foreach ( $default_types as $ext ) {
    1882             if ( ! empty( $atts[ $ext ] ) ) {
    1883                 $type = wp_check_filetype( $atts[ $ext ], wp_get_mime_types() );
    1884                 if ( strtolower( $type['ext'] ) === $ext ) {
    1885                     $primary = true;
    1886                 }
    1887             }
    1888         }
    1889     }
    1890 
    1891     if ( ! $primary ) {
    1892         $videos = get_attached_media( 'video', $post_id );
    1893         if ( empty( $videos ) ) {
    1894             return;
    1895         }
    1896 
    1897         $video = reset( $videos );
    1898         $atts['src'] = wp_get_attachment_url( $video->ID );
    1899         if ( empty( $atts['src'] ) ) {
    1900             return;
    1901         }
    1902 
    1903         array_unshift( $default_types, 'src' );
    1904     }
    1905 
    1906     /**
    1907      * Filter the media library used for the video shortcode.
    1908      *
    1909      * @since 3.6.0
    1910      *
    1911      * @param string $library Media library used for the video shortcode.
    1912      */
    1913     $library = apply_filters( 'wp_video_shortcode_library', 'mediaelement' );
    1914     if ( 'mediaelement' === $library && did_action( 'init' ) ) {
    1915         wp_enqueue_style( 'wp-mediaelement' );
    1916         wp_enqueue_script( 'wp-mediaelement' );
    1917     }
    1918 
    1919     /**
    1920      * Filter the class attribute for the video shortcode output container.
    1921      *
    1922      * @since 3.6.0
    1923      *
    1924      * @param string $class CSS class or list of space-separated classes.
    1925      */
    1926     $html_atts = array(
    1927         'class'    => apply_filters( 'wp_video_shortcode_class', 'wp-video-shortcode' ),
    1928         'id'       => sprintf( 'video-%d-%d', $post_id, $instance ),
    1929         'width'    => absint( $atts['width'] ),
    1930         'height'   => absint( $atts['height'] ),
    1931         'poster'   => esc_url( $atts['poster'] ),
    1932         'loop'     => wp_validate_boolean( $atts['loop'] ),
    1933         'autoplay' => wp_validate_boolean( $atts['autoplay'] ),
    1934         'preload'  => $atts['preload'],
    1935     );
    1936 
    1937     // These ones should just be omitted altogether if they are blank
    1938     foreach ( array( 'poster', 'loop', 'autoplay', 'preload' ) as $a ) {
    1939         if ( empty( $html_atts[$a] ) ) {
    1940             unset( $html_atts[$a] );
    1941         }
    1942     }
    1943 
    1944     $attr_strings = array();
    1945     foreach ( $html_atts as $k => $v ) {
    1946         $attr_strings[] = $k . '="' . esc_attr( $v ) . '"';
    1947     }
    1948 
    1949     $html = '';
    1950     if ( 'mediaelement' === $library && 1 === $instance ) {
    1951         $html .= "<!--[if lt IE 9]><script>document.createElement('video');</script><![endif]-->\n";
    1952     }
    1953     $html .= sprintf( '<video %s controls="controls">', join( ' ', $attr_strings ) );
    1954 
    1955     $fileurl = '';
    1956     $source = '<source type="%s" src="%s" />';
    1957     foreach ( $default_types as $fallback ) {
    1958         if ( ! empty( $atts[ $fallback ] ) ) {
    1959             if ( empty( $fileurl ) ) {
    1960                 $fileurl = $atts[ $fallback ];
    1961             }
    1962             if ( 'src' === $fallback && $is_youtube ) {
    1963                 $type = array( 'type' => 'video/youtube' );
    1964             } elseif ( 'src' === $fallback && $is_vimeo ) {
    1965                 $type = array( 'type' => 'video/vimeo' );
    1966             } else {
    1967                 $type = wp_check_filetype( $atts[ $fallback ], wp_get_mime_types() );
    1968             }
    1969             $url = add_query_arg( '_', $instance, $atts[ $fallback ] );
    1970             $html .= sprintf( $source, $type['type'], esc_url( $url ) );
    1971         }
    1972     }
    1973 
    1974     if ( ! empty( $content ) ) {
    1975         if ( false !== strpos( $content, "\n" ) ) {
    1976             $content = str_replace( array( "\r\n", "\n", "\t" ), '', $content );
    1977         }
    1978         $html .= trim( $content );
    1979     }
    1980 
    1981     if ( 'mediaelement' === $library ) {
    1982         $html .= wp_mediaelement_fallback( $fileurl );
    1983     }
    1984     $html .= '</video>';
    1985 
    1986     $width_rule = '';
    1987     if ( ! empty( $atts['width'] ) ) {
    1988         $width_rule = sprintf( 'width: %dpx; ', $atts['width'] );
    1989     }
    1990     $output = sprintf( '<div style="%s" class="wp-video">%s</div>', $width_rule, $html );
    1991 
    1992     /**
    1993      * Filter the output of the video shortcode.
    1994      *
    1995      * @since 3.6.0
    1996      *
    1997      * @param string $output  Video shortcode HTML output.
    1998      * @param array  $atts    Array of video shortcode attributes.
    1999      * @param string $video   Video file.
    2000      * @param int    $post_id Post ID.
    2001      * @param string $library Media library used for the video shortcode.
    2002      */
    2003     return apply_filters( 'wp_video_shortcode', $output, $atts, $video, $post_id, $library );
    2004 }
    2005 add_shortcode( 'video', 'wp_video_shortcode' );
    2006 
    2007 /**
    2008  * Displays previous image link that has the same post parent.
    2009  *
    2010  * @since 2.5.0
    2011  *
    2012  * @see adjacent_image_link()
    2013  *
    2014  * @param string|array $size Optional. Registered image size or flat array of height and width dimensions.
    2015  *                           0 or 'none' will default to 'post_title' or `$text`. Default 'thumbnail'.
    2016  * @param string       $text Optional. Link text. Default false.
    2017  */
    2018 function previous_image_link( $size = 'thumbnail', $text = false ) {
    2019     adjacent_image_link(true, $size, $text);
    2020 }
    2021 
    2022 /**
    2023  * Displays next image link that has the same post parent.
    2024  *
    2025  * @since 2.5.0
    2026  *
    2027  * @see adjacent_image_link()
    2028  *
    2029  * @param string|array $size Optional. Registered image size or flat array of height and width dimensions.
    2030  *                           0 or 'none' will default to 'post_title' or `$text`. Default 'thumbnail'.
    2031  * @param string       $text Optional. Link text. Default false.
    2032  */
    2033 function next_image_link($size = 'thumbnail', $text = false) {
    2034     adjacent_image_link(false, $size, $text);
    2035 }
    2036 
    2037 /**
    2038  * Displays next or previous image link that has the same post parent.
    2039  *
    2040  * Retrieves the current attachment object from the $post global.
    2041  *
    2042  * @since 2.5.0
    2043  *
    2044  * @param bool         $prev Optional. Whether to display the next (false) or previous (true) link. Default true.
    2045  * @param string|array $size Optional. Registered image size or flat array of height and width dimensions.
    2046  *                                     Default 'thumbnail'.
    2047  * @param bool         $text Optional. Link text. Default false.
    2048  */
    2049 function adjacent_image_link( $prev = true, $size = 'thumbnail', $text = false ) {
    2050     $post = get_post();
    2051     $attachments = array_values( get_children( array( 'post_parent' => $post->post_parent, 'post_status' => 'inherit', 'post_type' => 'attachment', 'post_mime_type' => 'image', 'order' => 'ASC', 'orderby' => 'menu_order ID' ) ) );
    2052 
    2053     foreach ( $attachments as $k => $attachment ) {
    2054         if ( $attachment->ID == $post->ID ) {
    2055             break;
    2056         }
    2057     }
    2058 
    2059     $output = '';
    2060     $attachment_id = 0;
    2061 
    2062     if ( $attachments ) {
    2063         $k = $prev ? $k - 1 : $k + 1;
    2064 
    2065         if ( isset( $attachments[ $k ] ) ) {
    2066             $attachment_id = $attachments[ $k ]->ID;
    2067             $output = wp_get_attachment_link( $attachment_id, $size, true, false, $text );
    2068         }
    2069     }
    2070 
    2071     $adjacent = $prev ? 'previous' : 'next';
    2072 
    2073     /**
    2074      * Filter the adjacent image link.
    2075      *
    2076      * The dynamic portion of the hook name, `$adjacent`, refers to the type of adjacency,
    2077      * either 'next', or 'previous'.
    2078      *
    2079      * @since 3.5.0
    2080      *
    2081      * @param string $output        Adjacent image HTML markup.
    2082      * @param int    $attachment_id Attachment ID
    2083      * @param string $size          Image size.
    2084      * @param string $text          Link text.
    2085      */
    2086     echo apply_filters( "{$adjacent}_image_link", $output, $attachment_id, $size, $text );
    2087 }
    2088 
    2089 /**
    2090  * Retrieves taxonomies attached to given the attachment.
    2091  *
    2092  * @since 2.5.0
    2093  *
    2094  * @param int|array|object $attachment Attachment ID, data array, or data object.
    2095  * @return array Empty array on failure. List of taxonomies on success.
    2096  */
    2097 function get_attachment_taxonomies( $attachment ) {
    2098     if ( is_int( $attachment ) ) {
    2099         $attachment = get_post( $attachment );
    2100     } elseif ( is_array( $attachment ) ) {
    2101         $attachment = (object) $attachment;
    2102     }
    2103     if ( ! is_object($attachment) )
    2104         return array();
    2105 
    2106     $file = get_attached_file( $attachment->ID );
    2107     $filename = basename( $file );
    2108 
    2109     $objects = array('attachment');
    2110 
    2111     if ( false !== strpos($filename, '.') )
    2112         $objects[] = 'attachment:' . substr($filename, strrpos($filename, '.') + 1);
    2113     if ( !empty($attachment->post_mime_type) ) {
    2114         $objects[] = 'attachment:' . $attachment->post_mime_type;
    2115         if ( false !== strpos($attachment->post_mime_type, '/') )
    2116             foreach ( explode('/', $attachment->post_mime_type) as $token )
    2117                 if ( !empty($token) )
    2118                     $objects[] = "attachment:$token";
    2119     }
    2120 
    2121     $taxonomies = array();
    2122     foreach ( $objects as $object )
    2123         if ( $taxes = get_object_taxonomies($object) )
    2124             $taxonomies = array_merge($taxonomies, $taxes);
    2125 
    2126     return array_unique($taxonomies);
    2127 }
    2128 
    2129 /**
    2130  * Retrieves all of the taxonomy names that are registered for attachments.
    2131  *
    2132  * Handles mime-type-specific taxonomies such as attachment:image and attachment:video.
    2133  *
    2134  * @since 3.5.0
    2135  *
    2136  * @see get_taxonomies()
    2137  *
    2138  * @param string $output Optional. The type of taxonomy output to return. Accepts 'names' or 'objects'.
    2139  *                       Default 'names'.
    2140  * @return array The names of all taxonomy of $object_type.
    2141  */
    2142 function get_taxonomies_for_attachments( $output = 'names' ) {
    2143     $taxonomies = array();
    2144     foreach ( get_taxonomies( array(), 'objects' ) as $taxonomy ) {
    2145         foreach ( $taxonomy->object_type as $object_type ) {
    2146             if ( 'attachment' == $object_type || 0 === strpos( $object_type, 'attachment:' ) ) {
    2147                 if ( 'names' == $output )
    2148                     $taxonomies[] = $taxonomy->name;
    2149                 else
    2150                     $taxonomies[ $taxonomy->name ] = $taxonomy;
    2151                 break;
    2152             }
    2153         }
    2154     }
    2155 
    2156     return $taxonomies;
    2157 }
    2158 
    2159 /**
    2160  * Create new GD image resource with transparency support
    2161  *
    2162  * @todo: Deprecate if possible.
    2163  *
    2164  * @since 2.9.0
    2165  *
    2166  * @param int $width  Image width in pixels.
    2167  * @param int $height Image height in pixels..
    2168  * @return resource The GD image resource.
    2169  */
    2170 function wp_imagecreatetruecolor($width, $height) {
    2171     $img = imagecreatetruecolor($width, $height);
    2172     if ( is_resource($img) && function_exists('imagealphablending') && function_exists('imagesavealpha') ) {
    2173         imagealphablending($img, false);
    2174         imagesavealpha($img, true);
    2175     }
    2176     return $img;
    2177 }
     8 */
    21789
    217910/**
     
    224980     */
    225081    return apply_filters( 'embed_defaults', compact( 'width', 'height' ), $url );
    2251 }
    2252 
    2253 /**
    2254  * Based on a supplied width/height example, return the biggest possible dimensions based on the max width/height.
    2255  *
    2256  * @since 2.9.0
    2257  *
    2258  * @see wp_constrain_dimensions()
    2259  *
    2260  * @param int $example_width  The width of an example embed.
    2261  * @param int $example_height The height of an example embed.
    2262  * @param int $max_width      The maximum allowed width.
    2263  * @param int $max_height     The maximum allowed height.
    2264  * @return array The maximum possible width and height based on the example ratio.
    2265  */
    2266 function wp_expand_dimensions( $example_width, $example_height, $max_width, $max_height ) {
    2267     $example_width  = (int) $example_width;
    2268     $example_height = (int) $example_height;
    2269     $max_width      = (int) $max_width;
    2270     $max_height     = (int) $max_height;
    2271 
    2272     return wp_constrain_dimensions( $example_width * 1000000, $example_height * 1000000, $max_width, $max_height );
    227382}
    227483
     
    2518327    return apply_filters( 'wp_embed_handler_video', $video, $attr, $url, $rawattr );
    2519328}
    2520 
    2521 /**
    2522  * Converts a shorthand byte value to an integer byte value.
    2523  *
    2524  * @since 2.3.0
    2525  *
    2526  * @param string $size A shorthand byte value.
    2527  * @return int An integer byte value.
    2528  */
    2529 function wp_convert_hr_to_bytes( $size ) {
    2530     $size  = strtolower( $size );
    2531     $bytes = (int) $size;
    2532     if ( strpos( $size, 'k' ) !== false )
    2533         $bytes = intval( $size ) * 1024;
    2534     elseif ( strpos( $size, 'm' ) !== false )
    2535         $bytes = intval($size) * 1024 * 1024;
    2536     elseif ( strpos( $size, 'g' ) !== false )
    2537         $bytes = intval( $size ) * 1024 * 1024 * 1024;
    2538     return $bytes;
    2539 }
    2540 
    2541 /**
    2542  * Determines the maximum upload size allowed in php.ini.
    2543  *
    2544  * @since 2.5.0
    2545  *
    2546  * @return int Allowed upload size.
    2547  */
    2548 function wp_max_upload_size() {
    2549     $u_bytes = wp_convert_hr_to_bytes( ini_get( 'upload_max_filesize' ) );
    2550     $p_bytes = wp_convert_hr_to_bytes( ini_get( 'post_max_size' ) );
    2551 
    2552     /**
    2553      * Filter the maximum upload size allowed in php.ini.
    2554      *
    2555      * @since 2.5.0
    2556      *
    2557      * @param int $size    Max upload size limit in bytes.
    2558      * @param int $u_bytes Maximum upload filesize in bytes.
    2559      * @param int $p_bytes Maximum size of POST data in bytes.
    2560      */
    2561     return apply_filters( 'upload_size_limit', min( $u_bytes, $p_bytes ), $u_bytes, $p_bytes );
    2562 }
    2563 
    2564 /**
    2565  * Returns a WP_Image_Editor instance and loads file into it.
    2566  *
    2567  * @since 3.5.0
    2568  *
    2569  * @param string $path Path to the file to load.
    2570  * @param array  $args Optional. Additional arguments for retrieving the image editor.
    2571  *                     Default empty array.
    2572  * @return WP_Image_Editor|WP_Error The WP_Image_Editor object if successful, an WP_Error
    2573  *                                  object otherwise.
    2574  */
    2575 function wp_get_image_editor( $path, $args = array() ) {
    2576     $args['path'] = $path;
    2577 
    2578     if ( ! isset( $args['mime_type'] ) ) {
    2579         $file_info = wp_check_filetype( $args['path'] );
    2580 
    2581         // If $file_info['type'] is false, then we let the editor attempt to
    2582         // figure out the file type, rather than forcing a failure based on extension.
    2583         if ( isset( $file_info ) && $file_info['type'] )
    2584             $args['mime_type'] = $file_info['type'];
    2585     }
    2586 
    2587     $implementation = _wp_image_editor_choose( $args );
    2588 
    2589     if ( $implementation ) {
    2590         $editor = new $implementation( $path );
    2591         $loaded = $editor->load();
    2592 
    2593         if ( is_wp_error( $loaded ) )
    2594             return $loaded;
    2595 
    2596         return $editor;
    2597     }
    2598 
    2599     return new WP_Error( 'image_no_editor', __('No editor could be selected.') );
    2600 }
    2601 
    2602 /**
    2603  * Tests whether there is an editor that supports a given mime type or methods.
    2604  *
    2605  * @since 3.5.0
    2606  *
    2607  * @param string|array $args Optional. Array of arguments to retrieve the image editor supports.
    2608  *                           Default empty array.
    2609  * @return bool True if an eligible editor is found; false otherwise.
    2610  */
    2611 function wp_image_editor_supports( $args = array() ) {
    2612     return (bool) _wp_image_editor_choose( $args );
    2613 }
    2614 
    2615 /**
    2616  * Tests which editors are capable of supporting the request.
    2617  *
    2618  * @ignore
    2619  * @since 3.5.0
    2620  *
    2621  * @param array $args Optional. Array of arguments for choosing a capable editor. Default empty array.
    2622  * @return string|false Class name for the first editor that claims to support the request. False if no
    2623  *                     editor claims to support the request.
    2624  */
    2625 function _wp_image_editor_choose( $args = array() ) {
    2626     require_once ABSPATH . WPINC . '/class-wp-image-editor.php';
    2627     require_once ABSPATH . WPINC . '/class-wp-image-editor-gd.php';
    2628     require_once ABSPATH . WPINC . '/class-wp-image-editor-imagick.php';
    2629 
    2630     /**
    2631      * Filter the list of image editing library classes.
    2632      *
    2633      * @since 3.5.0
    2634      *
    2635      * @param array $image_editors List of available image editors. Defaults are
    2636      *                             'WP_Image_Editor_Imagick', 'WP_Image_Editor_GD'.
    2637      */
    2638     $implementations = apply_filters( 'wp_image_editors', array( 'WP_Image_Editor_Imagick', 'WP_Image_Editor_GD' ) );
    2639 
    2640     foreach ( $implementations as $implementation ) {
    2641         if ( ! call_user_func( array( $implementation, 'test' ), $args ) )
    2642             continue;
    2643 
    2644         if ( isset( $args['mime_type'] ) &&
    2645             ! call_user_func(
    2646                 array( $implementation, 'supports_mime_type' ),
    2647                 $args['mime_type'] ) ) {
    2648             continue;
    2649         }
    2650 
    2651         if ( isset( $args['methods'] ) &&
    2652              array_diff( $args['methods'], get_class_methods( $implementation ) ) ) {
    2653             continue;
    2654         }
    2655 
    2656         return $implementation;
    2657     }
    2658 
    2659     return false;
    2660 }
    2661 
    2662 /**
    2663  * Prints default plupload arguments.
    2664  *
    2665  * @since 3.4.0
    2666  */
    2667 function wp_plupload_default_settings() {
    2668     $wp_scripts = wp_scripts();
    2669 
    2670     $data = $wp_scripts->get_data( 'wp-plupload', 'data' );
    2671     if ( $data && false !== strpos( $data, '_wpPluploadSettings' ) )
    2672         return;
    2673 
    2674     $max_upload_size = wp_max_upload_size();
    2675 
    2676     $defaults = array(
    2677         'runtimes'            => 'html5,flash,silverlight,html4',
    2678         'file_data_name'      => 'async-upload', // key passed to $_FILE.
    2679         'url'                 => admin_url( 'async-upload.php', 'relative' ),
    2680         'flash_swf_url'       => includes_url( 'js/plupload/plupload.flash.swf' ),
    2681         'silverlight_xap_url' => includes_url( 'js/plupload/plupload.silverlight.xap' ),
    2682         'filters' => array(
    2683             'max_file_size'   => $max_upload_size . 'b',
    2684         ),
    2685     );
    2686 
    2687     // Currently only iOS Safari supports multiple files uploading but iOS 7.x has a bug that prevents uploading of videos
    2688     // when enabled. See #29602.
    2689     if ( wp_is_mobile() && strpos( $_SERVER['HTTP_USER_AGENT'], 'OS 7_' ) !== false &&
    2690         strpos( $_SERVER['HTTP_USER_AGENT'], 'like Mac OS X' ) !== false ) {
    2691 
    2692         $defaults['multi_selection'] = false;
    2693     }
    2694 
    2695     /**
    2696      * Filter the Plupload default settings.
    2697      *
    2698      * @since 3.4.0
    2699      *
    2700      * @param array $defaults Default Plupload settings array.
    2701      */
    2702     $defaults = apply_filters( 'plupload_default_settings', $defaults );
    2703 
    2704     $params = array(
    2705         'action' => 'upload-attachment',
    2706     );
    2707 
    2708     /**
    2709      * Filter the Plupload default parameters.
    2710      *
    2711      * @since 3.4.0
    2712      *
    2713      * @param array $params Default Plupload parameters array.
    2714      */
    2715     $params = apply_filters( 'plupload_default_params', $params );
    2716     $params['_wpnonce'] = wp_create_nonce( 'media-form' );
    2717     $defaults['multipart_params'] = $params;
    2718 
    2719     $settings = array(
    2720         'defaults' => $defaults,
    2721         'browser'  => array(
    2722             'mobile'    => wp_is_mobile(),
    2723             'supported' => _device_can_upload(),
    2724         ),
    2725         'limitExceeded' => is_multisite() && ! is_upload_space_available()
    2726     );
    2727 
    2728     $script = 'var _wpPluploadSettings = ' . wp_json_encode( $settings ) . ';';
    2729 
    2730     if ( $data )
    2731         $script = "$data\n$script";
    2732 
    2733     $wp_scripts->add_data( 'wp-plupload', 'data', $script );
    2734 }
    2735 
    2736 /**
    2737  * Prepares an attachment post object for JS, where it is expected
    2738  * to be JSON-encoded and fit into an Attachment model.
    2739  *
    2740  * @since 3.5.0
    2741  *
    2742  * @param mixed $attachment Attachment ID or object.
    2743  * @return array|void Array of attachment details.
    2744  */
    2745 function wp_prepare_attachment_for_js( $attachment ) {
    2746     if ( ! $attachment = get_post( $attachment ) )
    2747         return;
    2748 
    2749     if ( 'attachment' != $attachment->post_type )
    2750         return;
    2751 
    2752     $meta = wp_get_attachment_metadata( $attachment->ID );
    2753     if ( false !== strpos( $attachment->post_mime_type, '/' ) )
    2754         list( $type, $subtype ) = explode( '/', $attachment->post_mime_type );
    2755     else
    2756         list( $type, $subtype ) = array( $attachment->post_mime_type, '' );
    2757 
    2758     $attachment_url = wp_get_attachment_url( $attachment->ID );
    2759 
    2760     $response = array(
    2761         'id'          => $attachment->ID,
    2762         'title'       => $attachment->post_title,
    2763         'filename'    => wp_basename( get_attached_file( $attachment->ID ) ),
    2764         'url'         => $attachment_url,
    2765         'link'        => get_attachment_link( $attachment->ID ),
    2766         'alt'         => get_post_meta( $attachment->ID, '_wp_attachment_image_alt', true ),
    2767         'author'      => $attachment->post_author,
    2768         'description' => $attachment->post_content,
    2769         'caption'     => $attachment->post_excerpt,
    2770         'name'        => $attachment->post_name,
    2771         'status'      => $attachment->post_status,
    2772         'uploadedTo'  => $attachment->post_parent,
    2773         'date'        => strtotime( $attachment->post_date_gmt ) * 1000,
    2774         'modified'    => strtotime( $attachment->post_modified_gmt ) * 1000,
    2775         'menuOrder'   => $attachment->menu_order,
    2776         'mime'        => $attachment->post_mime_type,
    2777         'type'        => $type,
    2778         'subtype'     => $subtype,
    2779         'icon'        => wp_mime_type_icon( $attachment->ID ),
    2780         'dateFormatted' => mysql2date( get_option('date_format'), $attachment->post_date ),
    2781         'nonces'      => array(
    2782             'update' => false,
    2783             'delete' => false,
    2784             'edit'   => false
    2785         ),
    2786         'editLink'   => false,
    2787         'meta'       => false,
    2788     );
    2789 
    2790     $author = new WP_User( $attachment->post_author );
    2791     $response['authorName'] = $author->display_name;
    2792 
    2793     if ( $attachment->post_parent ) {
    2794         $post_parent = get_post( $attachment->post_parent );
    2795     } else {
    2796         $post_parent = false;
    2797     }
    2798 
    2799     if ( $post_parent ) {
    2800         $parent_type = get_post_type_object( $post_parent->post_type );
    2801         if ( $parent_type && $parent_type->show_ui && current_user_can( 'edit_post', $attachment->post_parent ) ) {
    2802             $response['uploadedToLink'] = get_edit_post_link( $attachment->post_parent, 'raw' );
    2803         }
    2804         $response['uploadedToTitle'] = $post_parent->post_title ? $post_parent->post_title : __( '(no title)' );
    2805     }
    2806 
    2807     $attached_file = get_attached_file( $attachment->ID );
    2808 
    2809     if ( isset( $meta['filesize'] ) ) {
    2810         $bytes = $meta['filesize'];
    2811     } elseif ( file_exists( $attached_file ) ) {
    2812         $bytes = filesize( $attached_file );
    2813     } else {
    2814         $bytes = '';
    2815     }
    2816 
    2817     if ( $bytes ) {
    2818         $response['filesizeInBytes'] = $bytes;
    2819         $response['filesizeHumanReadable'] = size_format( $bytes );
    2820     }
    2821 
    2822     if ( current_user_can( 'edit_post', $attachment->ID ) ) {
    2823         $response['nonces']['update'] = wp_create_nonce( 'update-post_' . $attachment->ID );
    2824         $response['nonces']['edit'] = wp_create_nonce( 'image_editor-' . $attachment->ID );
    2825         $response['editLink'] = get_edit_post_link( $attachment->ID, 'raw' );
    2826     }
    2827 
    2828     if ( current_user_can( 'delete_post', $attachment->ID ) )
    2829         $response['nonces']['delete'] = wp_create_nonce( 'delete-post_' . $attachment->ID );
    2830 
    2831     if ( $meta && 'image' === $type ) {
    2832         $sizes = array();
    2833 
    2834         /** This filter is documented in wp-admin/includes/media.php */
    2835         $possible_sizes = apply_filters( 'image_size_names_choose', array(
    2836             'thumbnail' => __('Thumbnail'),
    2837             'medium'    => __('Medium'),
    2838             'large'     => __('Large'),
    2839             'full'      => __('Full Size'),
    2840         ) );
    2841         unset( $possible_sizes['full'] );
    2842 
    2843         // Loop through all potential sizes that may be chosen. Try to do this with some efficiency.
    2844         // First: run the image_downsize filter. If it returns something, we can use its data.
    2845         // If the filter does not return something, then image_downsize() is just an expensive
    2846         // way to check the image metadata, which we do second.
    2847         foreach ( $possible_sizes as $size => $label ) {
    2848 
    2849             /** This filter is documented in wp-includes/media.php */
    2850             if ( $downsize = apply_filters( 'image_downsize', false, $attachment->ID, $size ) ) {
    2851                 if ( ! $downsize[3] )
    2852                     continue;
    2853                 $sizes[ $size ] = array(
    2854                     'height'      => $downsize[2],
    2855                     'width'       => $downsize[1],
    2856                     'url'         => $downsize[0],
    2857                     'orientation' => $downsize[2] > $downsize[1] ? 'portrait' : 'landscape',
    2858                 );
    2859             } elseif ( isset( $meta['sizes'][ $size ] ) ) {
    2860                 if ( ! isset( $base_url ) )
    2861                     $base_url = str_replace( wp_basename( $attachment_url ), '', $attachment_url );
    2862 
    2863                 // Nothing from the filter, so consult image metadata if we have it.
    2864                 $size_meta = $meta['sizes'][ $size ];
    2865 
    2866                 // We have the actual image size, but might need to further constrain it if content_width is narrower.
    2867                 // Thumbnail, medium, and full sizes are also checked against the site's height/width options.
    2868                 list( $width, $height ) = image_constrain_size_for_editor( $size_meta['width'], $size_meta['height'], $size, 'edit' );
    2869 
    2870                 $sizes[ $size ] = array(
    2871                     'height'      => $height,
    2872                     'width'       => $width,
    2873                     'url'         => $base_url . $size_meta['file'],
    2874                     'orientation' => $height > $width ? 'portrait' : 'landscape',
    2875                 );
    2876             }
    2877         }
    2878 
    2879         $sizes['full'] = array( 'url' => $attachment_url );
    2880 
    2881         if ( isset( $meta['height'], $meta['width'] ) ) {
    2882             $sizes['full']['height'] = $meta['height'];
    2883             $sizes['full']['width'] = $meta['width'];
    2884             $sizes['full']['orientation'] = $meta['height'] > $meta['width'] ? 'portrait' : 'landscape';
    2885         }
    2886 
    2887         $response = array_merge( $response, array( 'sizes' => $sizes ), $sizes['full'] );
    2888     } elseif ( $meta && 'video' === $type ) {
    2889         if ( isset( $meta['width'] ) )
    2890             $response['width'] = (int) $meta['width'];
    2891         if ( isset( $meta['height'] ) )
    2892             $response['height'] = (int) $meta['height'];
    2893     }
    2894 
    2895     if ( $meta && ( 'audio' === $type || 'video' === $type ) ) {
    2896         if ( isset( $meta['length_formatted'] ) )
    2897             $response['fileLength'] = $meta['length_formatted'];
    2898 
    2899         $response['meta'] = array();
    2900         foreach ( wp_get_attachment_id3_keys( $attachment, 'js' ) as $key => $label ) {
    2901             $response['meta'][ $key ] = false;
    2902 
    2903             if ( ! empty( $meta[ $key ] ) ) {
    2904                 $response['meta'][ $key ] = $meta[ $key ];
    2905             }
    2906         }
    2907 
    2908         $id = get_post_thumbnail_id( $attachment->ID );
    2909         if ( ! empty( $id ) ) {
    2910             list( $src, $width, $height ) = wp_get_attachment_image_src( $id, 'full' );
    2911             $response['image'] = compact( 'src', 'width', 'height' );
    2912             list( $src, $width, $height ) = wp_get_attachment_image_src( $id, 'thumbnail' );
    2913             $response['thumb'] = compact( 'src', 'width', 'height' );
    2914         } else {
    2915             $src = wp_mime_type_icon( $attachment->ID );
    2916             $width = 48;
    2917             $height = 64;
    2918             $response['image'] = compact( 'src', 'width', 'height' );
    2919             $response['thumb'] = compact( 'src', 'width', 'height' );
    2920         }
    2921     }
    2922 
    2923     if ( function_exists('get_compat_media_markup') )
    2924         $response['compat'] = get_compat_media_markup( $attachment->ID, array( 'in_modal' => true ) );
    2925 
    2926     /**
    2927      * Filter the attachment data prepared for JavaScript.
    2928      *
    2929      * @since 3.5.0
    2930      *
    2931      * @param array      $response   Array of prepared attachment data.
    2932      * @param int|object $attachment Attachment ID or object.
    2933      * @param array      $meta       Array of attachment meta data.
    2934      */
    2935     return apply_filters( 'wp_prepare_attachment_for_js', $response, $attachment, $meta );
    2936 }
    2937 
    2938 /**
    2939  * Enqueues all scripts, styles, settings, and templates necessary to use
    2940  * all media JS APIs.
    2941  *
    2942  * @since 3.5.0
    2943  *
    2944  * @global int       $content_width
    2945  * @global wpdb      $wpdb
    2946  * @global WP_Locale $wp_locale
    2947  *
    2948  * @param array $args {
    2949  *     Arguments for enqueuing media scripts.
    2950  *
    2951  *     @type int|WP_Post A post object or ID.
    2952  * }
    2953  */
    2954 function wp_enqueue_media( $args = array() ) {
    2955     // Enqueue me just once per page, please.
    2956     if ( did_action( 'wp_enqueue_media' ) )
    2957         return;
    2958 
    2959     global $content_width, $wpdb, $wp_locale;
    2960 
    2961     $defaults = array(
    2962         'post' => null,
    2963     );
    2964     $args = wp_parse_args( $args, $defaults );
    2965 
    2966     // We're going to pass the old thickbox media tabs to `media_upload_tabs`
    2967     // to ensure plugins will work. We will then unset those tabs.
    2968     $tabs = array(
    2969         // handler action suffix => tab label
    2970         'type'     => '',
    2971         'type_url' => '',
    2972         'gallery'  => '',
    2973         'library'  => '',
    2974     );
    2975 
    2976     /** This filter is documented in wp-admin/includes/media.php */
    2977     $tabs = apply_filters( 'media_upload_tabs', $tabs );
    2978     unset( $tabs['type'], $tabs['type_url'], $tabs['gallery'], $tabs['library'] );
    2979 
    2980     $props = array(
    2981         'link'  => get_option( 'image_default_link_type' ), // db default is 'file'
    2982         'align' => get_option( 'image_default_align' ), // empty default
    2983         'size'  => get_option( 'image_default_size' ),  // empty default
    2984     );
    2985 
    2986     $exts = array_merge( wp_get_audio_extensions(), wp_get_video_extensions() );
    2987     $mimes = get_allowed_mime_types();
    2988     $ext_mimes = array();
    2989     foreach ( $exts as $ext ) {
    2990         foreach ( $mimes as $ext_preg => $mime_match ) {
    2991             if ( preg_match( '#' . $ext . '#i', $ext_preg ) ) {
    2992                 $ext_mimes[ $ext ] = $mime_match;
    2993                 break;
    2994             }
    2995         }
    2996     }
    2997 
    2998     $has_audio = $wpdb->get_var( "
    2999         SELECT ID
    3000         FROM $wpdb->posts
    3001         WHERE post_type = 'attachment'
    3002         AND post_mime_type LIKE 'audio%'
    3003         LIMIT 1
    3004     " );
    3005     $has_video = $wpdb->get_var( "
    3006         SELECT ID
    3007         FROM $wpdb->posts
    3008         WHERE post_type = 'attachment'
    3009         AND post_mime_type LIKE 'video%'
    3010         LIMIT 1
    3011     " );
    3012     $months = $wpdb->get_results( $wpdb->prepare( "
    3013         SELECT DISTINCT YEAR( post_date ) AS year, MONTH( post_date ) AS month
    3014         FROM $wpdb->posts
    3015         WHERE post_type = %s
    3016         ORDER BY post_date DESC
    3017     ", 'attachment' ) );
    3018     foreach ( $months as $month_year ) {
    3019         $month_year->text = sprintf( __( '%1$s %2$d' ), $wp_locale->get_month( $month_year->month ), $month_year->year );
    3020     }
    3021 
    3022     $settings = array(
    3023         'tabs'      => $tabs,
    3024         'tabUrl'    => add_query_arg( array( 'chromeless' => true ), admin_url('media-upload.php') ),
    3025         'mimeTypes' => wp_list_pluck( get_post_mime_types(), 0 ),
    3026         /** This filter is documented in wp-admin/includes/media.php */
    3027         'captions'  => ! apply_filters( 'disable_captions', '' ),
    3028         'nonce'     => array(
    3029             'sendToEditor' => wp_create_nonce( 'media-send-to-editor' ),
    3030         ),
    3031         'post'    => array(
    3032             'id' => 0,
    3033         ),
    3034         'defaultProps' => $props,
    3035         'attachmentCounts' => array(
    3036             'audio' => ( $has_audio ) ? 1 : 0,
    3037             'video' => ( $has_video ) ? 1 : 0
    3038         ),
    3039         'embedExts'    => $exts,
    3040         'embedMimes'   => $ext_mimes,
    3041         'contentWidth' => $content_width,
    3042         'months'       => $months,
    3043         'mediaTrash'   => MEDIA_TRASH ? 1 : 0
    3044     );
    3045 
    3046     $post = null;
    3047     if ( isset( $args['post'] ) ) {
    3048         $post = get_post( $args['post'] );
    3049         $settings['post'] = array(
    3050             'id' => $post->ID,
    3051             'nonce' => wp_create_nonce( 'update-post_' . $post->ID ),
    3052         );
    3053 
    3054         $thumbnail_support = current_theme_supports( 'post-thumbnails', $post->post_type ) && post_type_supports( $post->post_type, 'thumbnail' );
    3055         if ( ! $thumbnail_support && 'attachment' === $post->post_type && $post->post_mime_type ) {
    3056             if ( wp_attachment_is( 'audio', $post ) ) {
    3057                 $thumbnail_support = post_type_supports( 'attachment:audio', 'thumbnail' ) || current_theme_supports( 'post-thumbnails', 'attachment:audio' );
    3058             } elseif ( wp_attachment_is( 'video', $post ) ) {
    3059                 $thumbnail_support = post_type_supports( 'attachment:video', 'thumbnail' ) || current_theme_supports( 'post-thumbnails', 'attachment:video' );
    3060             }
    3061         }
    3062 
    3063         if ( $thumbnail_support ) {
    3064             $featured_image_id = get_post_meta( $post->ID, '_thumbnail_id', true );
    3065             $settings['post']['featuredImageId'] = $featured_image_id ? $featured_image_id : -1;
    3066         }
    3067     }
    3068 
    3069     if ( $post ) {
    3070         $post_type_object = get_post_type_object( $post->post_type );
    3071     } else {
    3072         $post_type_object = get_post_type_object( 'post' );
    3073     }
    3074 
    3075     $strings = array(
    3076         // Generic
    3077         'url'         => __( 'URL' ),
    3078         'addMedia'    => __( 'Add Media' ),
    3079         'search'      => __( 'Search' ),
    3080         'select'      => __( 'Select' ),
    3081         'cancel'      => __( 'Cancel' ),
    3082         'update'      => __( 'Update' ),
    3083         'replace'     => __( 'Replace' ),
    3084         'remove'      => __( 'Remove' ),
    3085         'back'        => __( 'Back' ),
    3086         /* translators: This is a would-be plural string used in the media manager.
    3087            If there is not a word you can use in your language to avoid issues with the
    3088            lack of plural support here, turn it into "selected: %d" then translate it.
    3089          */
    3090         'selected'    => __( '%d selected' ),
    3091         'dragInfo'    => __( 'Drag and drop to reorder media files.' ),
    3092 
    3093         // Upload
    3094         'uploadFilesTitle'  => __( 'Upload Files' ),
    3095         'uploadImagesTitle' => __( 'Upload Images' ),
    3096 
    3097         // Library
    3098         'mediaLibraryTitle'      => __( 'Media Library' ),
    3099         'insertMediaTitle'       => __( 'Insert Media' ),
    3100         'createNewGallery'       => __( 'Create a new gallery' ),
    3101         'createNewPlaylist'      => __( 'Create a new playlist' ),
    3102         'createNewVideoPlaylist' => __( 'Create a new video playlist' ),
    3103         'returnToLibrary'        => __( '&#8592; Return to library' ),
    3104         'allMediaItems'          => __( 'All media items' ),
    3105         'allDates'               => __( 'All dates' ),
    3106         'noItemsFound'           => __( 'No items found.' ),
    3107         'insertIntoPost'         => $post_type_object->labels->insert_into_item,
    3108         'unattached'             => __( 'Unattached' ),
    3109         'trash'                  => _x( 'Trash', 'noun' ),
    3110         'uploadedToThisPost'     => $post_type_object->labels->uploaded_to_this_item,
    3111         'warnDelete'             => __( "You are about to permanently delete this item.\n  'Cancel' to stop, 'OK' to delete." ),
    3112         'warnBulkDelete'         => __( "You are about to permanently delete these items.\n  'Cancel' to stop, 'OK' to delete." ),
    3113         'warnBulkTrash'          => __( "You are about to trash these items.\n  'Cancel' to stop, 'OK' to delete." ),
    3114         'bulkSelect'             => __( 'Bulk Select' ),
    3115         'cancelSelection'        => __( 'Cancel Selection' ),
    3116         'trashSelected'          => __( 'Trash Selected' ),
    3117         'untrashSelected'        => __( 'Untrash Selected' ),
    3118         'deleteSelected'         => __( 'Delete Selected' ),
    3119         'deletePermanently'      => __( 'Delete Permanently' ),
    3120         'apply'                  => __( 'Apply' ),
    3121         'filterByDate'           => __( 'Filter by date' ),
    3122         'filterByType'           => __( 'Filter by type' ),
    3123         'searchMediaLabel'       => __( 'Search Media' ),
    3124         'noMedia'                => __( 'No media attachments found.' ),
    3125 
    3126         // Library Details
    3127         'attachmentDetails'  => __( 'Attachment Details' ),
    3128 
    3129         // From URL
    3130         'insertFromUrlTitle' => __( 'Insert from URL' ),
    3131 
    3132         // Featured Images
    3133         'setFeaturedImageTitle' => $post_type_object->labels->featured_image,
    3134         'setFeaturedImage'      => $post_type_object->labels->set_featured_image,
    3135 
    3136         // Gallery
    3137         'createGalleryTitle' => __( 'Create Gallery' ),
    3138         'editGalleryTitle'   => __( 'Edit Gallery' ),
    3139         'cancelGalleryTitle' => __( '&#8592; Cancel Gallery' ),
    3140         'insertGallery'      => __( 'Insert gallery' ),
    3141         'updateGallery'      => __( 'Update gallery' ),
    3142         'addToGallery'       => __( 'Add to gallery' ),
    3143         'addToGalleryTitle'  => __( 'Add to Gallery' ),
    3144         'reverseOrder'       => __( 'Reverse order' ),
    3145 
    3146         // Edit Image
    3147         'imageDetailsTitle'     => __( 'Image Details' ),
    3148         'imageReplaceTitle'     => __( 'Replace Image' ),
    3149         'imageDetailsCancel'    => __( 'Cancel Edit' ),
    3150         'editImage'             => __( 'Edit Image' ),
    3151 
    3152         // Crop Image
    3153         'chooseImage' => __( 'Choose Image' ),
    3154         'selectAndCrop' => __( 'Select and Crop' ),
    3155         'skipCropping' => __( 'Skip Cropping' ),
    3156         'cropImage' => __( 'Crop Image' ),
    3157         'cropYourImage' => __( 'Crop your image' ),
    3158         'cropping' => __( 'Cropping&hellip;' ),
    3159         'suggestedDimensions' => __( 'Suggested image dimensions:' ),
    3160         'cropError' => __( 'There has been an error cropping your image.' ),
    3161 
    3162         // Edit Audio
    3163         'audioDetailsTitle'     => __( 'Audio Details' ),
    3164         'audioReplaceTitle'     => __( 'Replace Audio' ),
    3165         'audioAddSourceTitle'   => __( 'Add Audio Source' ),
    3166         'audioDetailsCancel'    => __( 'Cancel Edit' ),
    3167 
    3168         // Edit Video
    3169         'videoDetailsTitle'     => __( 'Video Details' ),
    3170         'videoReplaceTitle'     => __( 'Replace Video' ),
    3171         'videoAddSourceTitle'   => __( 'Add Video Source' ),
    3172         'videoDetailsCancel'    => __( 'Cancel Edit' ),
    3173         'videoSelectPosterImageTitle' => __( 'Select Poster Image' ),
    3174         'videoAddTrackTitle'    => __( 'Add Subtitles' ),
    3175 
    3176         // Playlist
    3177         'playlistDragInfo'    => __( 'Drag and drop to reorder tracks.' ),
    3178         'createPlaylistTitle' => __( 'Create Audio Playlist' ),
    3179         'editPlaylistTitle'   => __( 'Edit Audio Playlist' ),
    3180         'cancelPlaylistTitle' => __( '&#8592; Cancel Audio Playlist' ),
    3181         'insertPlaylist'      => __( 'Insert audio playlist' ),
    3182         'updatePlaylist'      => __( 'Update audio playlist' ),
    3183         'addToPlaylist'       => __( 'Add to audio playlist' ),
    3184         'addToPlaylistTitle'  => __( 'Add to Audio Playlist' ),
    3185 
    3186         // Video Playlist
    3187         'videoPlaylistDragInfo'    => __( 'Drag and drop to reorder videos.' ),
    3188         'createVideoPlaylistTitle' => __( 'Create Video Playlist' ),
    3189         'editVideoPlaylistTitle'   => __( 'Edit Video Playlist' ),
    3190         'cancelVideoPlaylistTitle' => __( '&#8592; Cancel Video Playlist' ),
    3191         'insertVideoPlaylist'      => __( 'Insert video playlist' ),
    3192         'updateVideoPlaylist'      => __( 'Update video playlist' ),
    3193         'addToVideoPlaylist'       => __( 'Add to video playlist' ),
    3194         'addToVideoPlaylistTitle'  => __( 'Add to Video Playlist' ),
    3195     );
    3196 
    3197     /**
    3198      * Filter the media view settings.
    3199      *
    3200      * @since 3.5.0
    3201      *
    3202      * @param array   $settings List of media view settings.
    3203      * @param WP_Post $post     Post object.
    3204      */
    3205     $settings = apply_filters( 'media_view_settings', $settings, $post );
    3206 
    3207     /**
    3208      * Filter the media view strings.
    3209      *
    3210      * @since 3.5.0
    3211      *
    3212      * @param array   $strings List of media view strings.
    3213      * @param WP_Post $post    Post object.
    3214      */
    3215     $strings = apply_filters( 'media_view_strings', $strings,  $post );
    3216 
    3217     $strings['settings'] = $settings;
    3218 
    3219     // Ensure we enqueue media-editor first, that way media-views is
    3220     // registered internally before we try to localize it. see #24724.
    3221     wp_enqueue_script( 'media-editor' );
    3222     wp_localize_script( 'media-views', '_wpMediaViewsL10n', $strings );
    3223 
    3224     wp_enqueue_script( 'media-audiovideo' );
    3225     wp_enqueue_style( 'media-views' );
    3226     if ( is_admin() ) {
    3227         wp_enqueue_script( 'mce-view' );
    3228         wp_enqueue_script( 'image-edit' );
    3229     }
    3230     wp_enqueue_style( 'imgareaselect' );
    3231     wp_plupload_default_settings();
    3232 
    3233     require_once ABSPATH . WPINC . '/media-template.php';
    3234     add_action( 'admin_footer', 'wp_print_media_templates' );
    3235     add_action( 'wp_footer', 'wp_print_media_templates' );
    3236     add_action( 'customize_controls_print_footer_scripts', 'wp_print_media_templates' );
    3237 
    3238     /**
    3239      * Fires at the conclusion of wp_enqueue_media().
    3240      *
    3241      * @since 3.5.0
    3242      */
    3243     do_action( 'wp_enqueue_media' );
    3244 }
    3245 
    3246 /**
    3247  * Retrieves media attached to the passed post.
    3248  *
    3249  * @since 3.6.0
    3250  *
    3251  * @param string      $type Mime type.
    3252  * @param int|WP_Post $post Optional. Post ID or WP_Post object. Default is global $post.
    3253  * @return array Found attachments.
    3254  */
    3255 function get_attached_media( $type, $post = 0 ) {
    3256     if ( ! $post = get_post( $post ) )
    3257         return array();
    3258 
    3259     $args = array(
    3260         'post_parent' => $post->ID,
    3261         'post_type' => 'attachment',
    3262         'post_mime_type' => $type,
    3263         'posts_per_page' => -1,
    3264         'orderby' => 'menu_order',
    3265         'order' => 'ASC',
    3266     );
    3267 
    3268     /**
    3269      * Filter arguments used to retrieve media attached to the given post.
    3270      *
    3271      * @since 3.6.0
    3272      *
    3273      * @param array  $args Post query arguments.
    3274      * @param string $type Mime type of the desired media.
    3275      * @param mixed  $post Post ID or object.
    3276      */
    3277     $args = apply_filters( 'get_attached_media_args', $args, $type, $post );
    3278 
    3279     $children = get_children( $args );
    3280 
    3281     /**
    3282      * Filter the list of media attached to the given post.
    3283      *
    3284      * @since 3.6.0
    3285      *
    3286      * @param array  $children Associative array of media attached to the given post.
    3287      * @param string $type     Mime type of the media desired.
    3288      * @param mixed  $post     Post ID or object.
    3289      */
    3290     return (array) apply_filters( 'get_attached_media', $children, $type, $post );
    3291 }
    3292 
    3293 /**
    3294  * Check the content blob for an audio, video, object, embed, or iframe tags.
    3295  *
    3296  * @since 3.6.0
    3297  *
    3298  * @param string $content A string which might contain media data.
    3299  * @param array  $types   An array of media types: 'audio', 'video', 'object', 'embed', or 'iframe'.
    3300  * @return array A list of found HTML media embeds.
    3301  */
    3302 function get_media_embedded_in_content( $content, $types = null ) {
    3303     $html = array();
    3304 
    3305     /**
    3306      * Filter the embedded media types that are allowed to be returned from the content blob.
    3307      *
    3308      * @since 4.2.0
    3309      *
    3310      * @param array $allowed_media_types An array of allowed media types. Default media types are
    3311      *                                   'audio', 'video', 'object', 'embed', and 'iframe'.
    3312      */
    3313     $allowed_media_types = apply_filters( 'media_embedded_in_content_allowed_types', array( 'audio', 'video', 'object', 'embed', 'iframe' ) );
    3314 
    3315     if ( ! empty( $types ) ) {
    3316         if ( ! is_array( $types ) ) {
    3317             $types = array( $types );
    3318         }
    3319 
    3320         $allowed_media_types = array_intersect( $allowed_media_types, $types );
    3321     }
    3322 
    3323     $tags = implode( '|', $allowed_media_types );
    3324 
    3325     if ( preg_match_all( '#<(?P<tag>' . $tags . ')[^<]*?(?:>[\s\S]*?<\/(?P=tag)>|\s*\/>)#', $content, $matches ) ) {
    3326         foreach ( $matches[0] as $match ) {
    3327             $html[] = $match;
    3328         }
    3329     }
    3330 
    3331     return $html;
    3332 }
    3333 
    3334 /**
    3335  * Retrieves galleries from the passed post's content.
    3336  *
    3337  * @since 3.6.0
    3338  *
    3339  * @param int|WP_Post $post Post ID or object.
    3340  * @param bool        $html Optional. Whether to return HTML or data in the array. Default true.
    3341  * @return array A list of arrays, each containing gallery data and srcs parsed
    3342  *               from the expanded shortcode.
    3343  */
    3344 function get_post_galleries( $post, $html = true ) {
    3345     if ( ! $post = get_post( $post ) )
    3346         return array();
    3347 
    3348     if ( ! has_shortcode( $post->post_content, 'gallery' ) )
    3349         return array();
    3350 
    3351     $galleries = array();
    3352     if ( preg_match_all( '/' . get_shortcode_regex() . '/s', $post->post_content, $matches, PREG_SET_ORDER ) ) {
    3353         foreach ( $matches as $shortcode ) {
    3354             if ( 'gallery' === $shortcode[2] ) {
    3355                 $srcs = array();
    3356 
    3357                 $gallery = do_shortcode_tag( $shortcode );
    3358                 if ( $html ) {
    3359                     $galleries[] = $gallery;
    3360                 } else {
    3361                     preg_match_all( '#src=([\'"])(.+?)\1#is', $gallery, $src, PREG_SET_ORDER );
    3362                     if ( ! empty( $src ) ) {
    3363                         foreach ( $src as $s )
    3364                             $srcs[] = $s[2];
    3365                     }
    3366 
    3367                     $data = shortcode_parse_atts( $shortcode[3] );
    3368                     $data['src'] = array_values( array_unique( $srcs ) );
    3369                     $galleries[] = $data;
    3370                 }
    3371             }
    3372         }
    3373     }
    3374 
    3375     /**
    3376      * Filter the list of all found galleries in the given post.
    3377      *
    3378      * @since 3.6.0
    3379      *
    3380      * @param array   $galleries Associative array of all found post galleries.
    3381      * @param WP_Post $post      Post object.
    3382      */
    3383     return apply_filters( 'get_post_galleries', $galleries, $post );
    3384 }
    3385 
    3386 /**
    3387  * Check a specified post's content for gallery and, if present, return the first
    3388  *
    3389  * @since 3.6.0
    3390  *
    3391  * @param int|WP_Post $post Optional. Post ID or WP_Post object. Default is global $post.
    3392  * @param bool        $html Optional. Whether to return HTML or data. Default is true.
    3393  * @return string|array Gallery data and srcs parsed from the expanded shortcode.
    3394  */
    3395 function get_post_gallery( $post = 0, $html = true ) {
    3396     $galleries = get_post_galleries( $post, $html );
    3397     $gallery = reset( $galleries );
    3398 
    3399     /**
    3400      * Filter the first-found post gallery.
    3401      *
    3402      * @since 3.6.0
    3403      *
    3404      * @param array       $gallery   The first-found post gallery.
    3405      * @param int|WP_Post $post      Post ID or object.
    3406      * @param array       $galleries Associative array of all found post galleries.
    3407      */
    3408     return apply_filters( 'get_post_gallery', $gallery, $post, $galleries );
    3409 }
    3410 
    3411 /**
    3412  * Retrieve the image srcs from galleries from a post's content, if present
    3413  *
    3414  * @since 3.6.0
    3415  *
    3416  * @see get_post_galleries()
    3417  *
    3418  * @param int|WP_Post $post Optional. Post ID or WP_Post object. Default is global `$post`.
    3419  * @return array A list of lists, each containing image srcs parsed.
    3420  *               from an expanded shortcode
    3421  */
    3422 function get_post_galleries_images( $post = 0 ) {
    3423     $galleries = get_post_galleries( $post, false );
    3424     return wp_list_pluck( $galleries, 'src' );
    3425 }
    3426 
    3427 /**
    3428  * Checks a post's content for galleries and return the image srcs for the first found gallery
    3429  *
    3430  * @since 3.6.0
    3431  *
    3432  * @see get_post_gallery()
    3433  *
    3434  * @param int|WP_Post $post Optional. Post ID or WP_Post object. Default is global `$post`.
    3435  * @return array A list of a gallery's image srcs in order.
    3436  */
    3437 function get_post_gallery_images( $post = 0 ) {
    3438     $gallery = get_post_gallery( $post, false );
    3439     return empty( $gallery['src'] ) ? array() : $gallery['src'];
    3440 }
    3441 
    3442 /**
    3443  * Maybe attempts to generate attachment metadata, if missing.
    3444  *
    3445  * @since 3.9.0
    3446  *
    3447  * @param WP_Post $attachment Attachment object.
    3448  */
    3449 function wp_maybe_generate_attachment_metadata( $attachment ) {
    3450     if ( empty( $attachment ) || ( empty( $attachment->ID ) || ! $attachment_id = (int) $attachment->ID ) ) {
    3451         return;
    3452     }
    3453 
    3454     $file = get_attached_file( $attachment_id );
    3455     $meta = wp_get_attachment_metadata( $attachment_id );
    3456     if ( empty( $meta ) && file_exists( $file ) ) {
    3457         $_meta = get_post_meta( $attachment_id );
    3458         $regeneration_lock = 'wp_generating_att_' . $attachment_id;
    3459         if ( ! array_key_exists( '_wp_attachment_metadata', $_meta ) && ! get_transient( $regeneration_lock ) ) {
    3460             set_transient( $regeneration_lock, $file );
    3461             wp_update_attachment_metadata( $attachment_id, wp_generate_attachment_metadata( $attachment_id, $file ) );
    3462             delete_transient( $regeneration_lock );
    3463         }
    3464     }
    3465 }
    3466 
    3467 /**
    3468  * Tries to convert an attachment URL into a post ID.
    3469  *
    3470  * @since 4.0.0
    3471  *
    3472  * @global wpdb $wpdb WordPress database abstraction object.
    3473  *
    3474  * @param string $url The URL to resolve.
    3475  * @return int The found post ID, or 0 on failure.
    3476  */
    3477 function attachment_url_to_postid( $url ) {
    3478     global $wpdb;
    3479 
    3480     $dir = wp_upload_dir();
    3481     $path = $url;
    3482 
    3483     $site_url = parse_url( $dir['url'] );
    3484     $image_path = parse_url( $path );
    3485 
    3486     //force the protocols to match if needed
    3487     if ( isset( $image_path['scheme'] ) && ( $image_path['scheme'] !== $site_url['scheme'] ) ) {
    3488         $path = str_replace( $image_path['scheme'], $site_url['scheme'], $path );
    3489     }
    3490 
    3491     if ( 0 === strpos( $path, $dir['baseurl'] . '/' ) ) {
    3492         $path = substr( $path, strlen( $dir['baseurl'] . '/' ) );
    3493     }
    3494 
    3495     $sql = $wpdb->prepare(
    3496         "SELECT post_id FROM $wpdb->postmeta WHERE meta_key = '_wp_attached_file' AND meta_value = %s",
    3497         $path
    3498     );
    3499     $post_id = $wpdb->get_var( $sql );
    3500 
    3501     /**
    3502      * Filter an attachment id found by URL.
    3503      *
    3504      * @since 4.2.0
    3505      *
    3506      * @param int|null $post_id The post_id (if any) found by the function.
    3507      * @param string   $url     The URL being looked up.
    3508      */
    3509     return (int) apply_filters( 'attachment_url_to_postid', $post_id, $url );
    3510 }
    3511 
    3512 /**
    3513  * Returns the URLs for CSS files used in an iframe-sandbox'd TinyMCE media view.
    3514  *
    3515  * @since 4.0.0
    3516  *
    3517  * @global string $wp_version
    3518  *
    3519  * @return array The relevant CSS file URLs.
    3520  */
    3521 function wpview_media_sandbox_styles() {
    3522     $version = 'ver=' . $GLOBALS['wp_version'];
    3523     $mediaelement = includes_url( "js/mediaelement/mediaelementplayer.min.css?$version" );
    3524     $wpmediaelement = includes_url( "js/mediaelement/wp-mediaelement.css?$version" );
    3525 
    3526     return array( $mediaelement, $wpmediaelement );
    3527 }
  • trunk/src/wp-includes/media.php

    r34657 r34851  
    21782178
    21792179/**
    2180  * Registers an embed handler.
    2181  *
    2182  * Should probably only be used for sites that do not support oEmbed.
    2183  *
    2184  * @since 2.9.0
    2185  *
    2186  * @global WP_Embed $wp_embed
    2187  *
    2188  * @param string   $id       An internal ID/name for the handler. Needs to be unique.
    2189  * @param string   $regex    The regex that will be used to see if this handler should be used for a URL.
    2190  * @param callable $callback The callback function that will be called if the regex is matched.
    2191  * @param int      $priority Optional. Used to specify the order in which the registered handlers will
    2192  *                           be tested. Default 10.
    2193  */
    2194 function wp_embed_register_handler( $id, $regex, $callback, $priority = 10 ) {
    2195     global $wp_embed;
    2196     $wp_embed->register_handler( $id, $regex, $callback, $priority );
    2197 }
    2198 
    2199 /**
    2200  * Unregisters a previously-registered embed handler.
    2201  *
    2202  * @since 2.9.0
    2203  *
    2204  * @global WP_Embed $wp_embed
    2205  *
    2206  * @param string $id       The handler ID that should be removed.
    2207  * @param int    $priority Optional. The priority of the handler to be removed. Default 10.
    2208  */
    2209 function wp_embed_unregister_handler( $id, $priority = 10 ) {
    2210     global $wp_embed;
    2211     $wp_embed->unregister_handler( $id, $priority );
    2212 }
    2213 
    2214 /**
    2215  * Create default array of embed parameters.
    2216  *
    2217  * The width defaults to the content width as specified by the theme. If the
    2218  * theme does not specify a content width, then 500px is used.
    2219  *
    2220  * The default height is 1.5 times the width, or 1000px, whichever is smaller.
    2221  *
    2222  * The 'embed_defaults' filter can be used to adjust either of these values.
    2223  *
    2224  * @since 2.9.0
    2225  *
    2226  * @global int $content_width
    2227  *
    2228  * @param string $url Optional. The URL that should be embedded. Default empty.
    2229  *
    2230  * @return array Default embed parameters.
    2231  */
    2232 function wp_embed_defaults( $url = '' ) {
    2233     if ( ! empty( $GLOBALS['content_width'] ) )
    2234         $width = (int) $GLOBALS['content_width'];
    2235 
    2236     if ( empty( $width ) )
    2237         $width = 500;
    2238 
    2239     $height = min( ceil( $width * 1.5 ), 1000 );
    2240 
    2241     /**
    2242      * Filter the default array of embed dimensions.
    2243      *
    2244      * @since 2.9.0
    2245      *
    2246      * @param int    $width  Width of the embed in pixels.
    2247      * @param int    $height Height of the embed in pixels.
    2248      * @param string $url    The URL that should be embedded.
    2249      */
    2250     return apply_filters( 'embed_defaults', compact( 'width', 'height' ), $url );
    2251 }
    2252 
    2253 /**
    22542180 * Based on a supplied width/height example, return the biggest possible dimensions based on the max width/height.
    22552181 *
     
    22712197
    22722198    return wp_constrain_dimensions( $example_width * 1000000, $example_height * 1000000, $max_width, $max_height );
    2273 }
    2274 
    2275 /**
    2276  * Attempts to fetch the embed HTML for a provided URL using oEmbed.
    2277  *
    2278  * @since 2.9.0
    2279  *
    2280  * @see WP_oEmbed
    2281  *
    2282  * @param string $url  The URL that should be embedded.
    2283  * @param array  $args Optional. Additional arguments and parameters for retrieving embed HTML.
    2284  *                     Default empty.
    2285  * @return false|string False on failure or the embed HTML on success.
    2286  */
    2287 function wp_oembed_get( $url, $args = '' ) {
    2288     require_once( ABSPATH . WPINC . '/class-oembed.php' );
    2289     $oembed = _wp_oembed_get_object();
    2290     return $oembed->get_html( $url, $args );
    2291 }
    2292 
    2293 /**
    2294  * Adds a URL format and oEmbed provider URL pair.
    2295  *
    2296  * @since 2.9.0
    2297  *
    2298  * @see WP_oEmbed
    2299  *
    2300  * @param string  $format   The format of URL that this provider can handle. You can use asterisks
    2301  *                          as wildcards.
    2302  * @param string  $provider The URL to the oEmbed provider.
    2303  * @param boolean $regex    Optional. Whether the `$format` parameter is in a RegEx format. Default false.
    2304  */
    2305 function wp_oembed_add_provider( $format, $provider, $regex = false ) {
    2306     require_once( ABSPATH . WPINC . '/class-oembed.php' );
    2307 
    2308     if ( did_action( 'plugins_loaded' ) ) {
    2309         $oembed = _wp_oembed_get_object();
    2310         $oembed->providers[$format] = array( $provider, $regex );
    2311     } else {
    2312         WP_oEmbed::_add_provider_early( $format, $provider, $regex );
    2313     }
    2314 }
    2315 
    2316 /**
    2317  * Removes an oEmbed provider.
    2318  *
    2319  * @since 3.5.0
    2320  *
    2321  * @see WP_oEmbed
    2322  *
    2323  * @param string $format The URL format for the oEmbed provider to remove.
    2324  * @return bool Was the provider removed successfully?
    2325  */
    2326 function wp_oembed_remove_provider( $format ) {
    2327     require_once( ABSPATH . WPINC . '/class-oembed.php' );
    2328 
    2329     if ( did_action( 'plugins_loaded' ) ) {
    2330         $oembed = _wp_oembed_get_object();
    2331 
    2332         if ( isset( $oembed->providers[ $format ] ) ) {
    2333             unset( $oembed->providers[ $format ] );
    2334             return true;
    2335         }
    2336     } else {
    2337         WP_oEmbed::_remove_provider_early( $format );
    2338     }
    2339 
    2340     return false;
    2341 }
    2342 
    2343 /**
    2344  * Determines if default embed handlers should be loaded.
    2345  *
    2346  * Checks to make sure that the embeds library hasn't already been loaded. If
    2347  * it hasn't, then it will load the embeds library.
    2348  *
    2349  * @since 2.9.0
    2350  *
    2351  * @see wp_embed_register_handler()
    2352  */
    2353 function wp_maybe_load_embeds() {
    2354     /**
    2355      * Filter whether to load the default embed handlers.
    2356      *
    2357      * Returning a falsey value will prevent loading the default embed handlers.
    2358      *
    2359      * @since 2.9.0
    2360      *
    2361      * @param bool $maybe_load_embeds Whether to load the embeds library. Default true.
    2362      */
    2363     if ( ! apply_filters( 'load_default_embeds', true ) ) {
    2364         return;
    2365     }
    2366 
    2367     wp_embed_register_handler( 'youtube_embed_url', '#https?://(www.)?youtube\.com/(?:v|embed)/([^/]+)#i', 'wp_embed_handler_youtube' );
    2368 
    2369     wp_embed_register_handler( 'googlevideo', '#http://video\.google\.([A-Za-z.]{2,5})/videoplay\?docid=([\d-]+)(.*?)#i', 'wp_embed_handler_googlevideo' );
    2370 
    2371     /**
    2372      * Filter the audio embed handler callback.
    2373      *
    2374      * @since 3.6.0
    2375      *
    2376      * @param callable $handler Audio embed handler callback function.
    2377      */
    2378     wp_embed_register_handler( 'audio', '#^https?://.+?\.(' . join( '|', wp_get_audio_extensions() ) . ')$#i', apply_filters( 'wp_audio_embed_handler', 'wp_embed_handler_audio' ), 9999 );
    2379 
    2380     /**
    2381      * Filter the video embed handler callback.
    2382      *
    2383      * @since 3.6.0
    2384      *
    2385      * @param callable $handler Video embed handler callback function.
    2386      */
    2387     wp_embed_register_handler( 'video', '#^https?://.+?\.(' . join( '|', wp_get_video_extensions() ) . ')$#i', apply_filters( 'wp_video_embed_handler', 'wp_embed_handler_video' ), 9999 );
    2388 }
    2389 
    2390 /**
    2391  * The Google Video embed handler callback.
    2392  *
    2393  * Google Video does not support oEmbed.
    2394  *
    2395  * @see WP_Embed::register_handler()
    2396  * @see WP_Embed::shortcode()
    2397  *
    2398  * @param array  $matches The RegEx matches from the provided regex when calling wp_embed_register_handler().
    2399  * @param array  $attr    Embed attributes.
    2400  * @param string $url     The original URL that was matched by the regex.
    2401  * @param array  $rawattr The original unmodified attributes.
    2402  * @return string The embed HTML.
    2403  */
    2404 function wp_embed_handler_googlevideo( $matches, $attr, $url, $rawattr ) {
    2405     // If the user supplied a fixed width AND height, use it
    2406     if ( !empty($rawattr['width']) && !empty($rawattr['height']) ) {
    2407         $width  = (int) $rawattr['width'];
    2408         $height = (int) $rawattr['height'];
    2409     } else {
    2410         list( $width, $height ) = wp_expand_dimensions( 425, 344, $attr['width'], $attr['height'] );
    2411     }
    2412 
    2413     /**
    2414      * Filter the Google Video embed output.
    2415      *
    2416      * @since 2.9.0
    2417      *
    2418      * @param string $html    Google Video HTML embed markup.
    2419      * @param array  $matches The RegEx matches from the provided regex.
    2420      * @param array  $attr    An array of embed attributes.
    2421      * @param string $url     The original URL that was matched by the regex.
    2422      * @param array  $rawattr The original unmodified attributes.
    2423      */
    2424     return apply_filters( 'embed_googlevideo', '<embed type="application/x-shockwave-flash" src="http://video.google.com/googleplayer.swf?docid=' . esc_attr($matches[2]) . '&amp;hl=en&amp;fs=true" style="width:' . esc_attr($width) . 'px;height:' . esc_attr($height) . 'px" allowFullScreen="true" allowScriptAccess="always" />', $matches, $attr, $url, $rawattr );
    2425 }
    2426 
    2427 /**
    2428  * YouTube iframe embed handler callback.
    2429  *
    2430  * Catches YouTube iframe embed URLs that are not parsable by oEmbed but can be translated into a URL that is.
    2431  *
    2432  * @since 4.0.0
    2433  *
    2434  * @global WP_Embed $wp_embed
    2435  *
    2436  * @param array  $matches The RegEx matches from the provided regex when calling
    2437  *                        wp_embed_register_handler().
    2438  * @param array  $attr    Embed attributes.
    2439  * @param string $url     The original URL that was matched by the regex.
    2440  * @param array  $rawattr The original unmodified attributes.
    2441  * @return string The embed HTML.
    2442  */
    2443 function wp_embed_handler_youtube( $matches, $attr, $url, $rawattr ) {
    2444     global $wp_embed;
    2445     $embed = $wp_embed->autoembed( "https://youtube.com/watch?v={$matches[2]}" );
    2446 
    2447     /**
    2448      * Filter the YoutTube embed output.
    2449      *
    2450      * @since 4.0.0
    2451      *
    2452      * @see wp_embed_handler_youtube()
    2453      *
    2454      * @param string $embed   YouTube embed output.
    2455      * @param array  $attr    An array of embed attributes.
    2456      * @param string $url     The original URL that was matched by the regex.
    2457      * @param array  $rawattr The original unmodified attributes.
    2458      */
    2459     return apply_filters( 'wp_embed_handler_youtube', $embed, $attr, $url, $rawattr );
    2460 }
    2461 
    2462 /**
    2463  * Audio embed handler callback.
    2464  *
    2465  * @since 3.6.0
    2466  *
    2467  * @param array  $matches The RegEx matches from the provided regex when calling wp_embed_register_handler().
    2468  * @param array  $attr Embed attributes.
    2469  * @param string $url The original URL that was matched by the regex.
    2470  * @param array  $rawattr The original unmodified attributes.
    2471  * @return string The embed HTML.
    2472  */
    2473 function wp_embed_handler_audio( $matches, $attr, $url, $rawattr ) {
    2474     $audio = sprintf( '[audio src="%s" /]', esc_url( $url ) );
    2475 
    2476     /**
    2477      * Filter the audio embed output.
    2478      *
    2479      * @since 3.6.0
    2480      *
    2481      * @param string $audio   Audio embed output.
    2482      * @param array  $attr    An array of embed attributes.
    2483      * @param string $url     The original URL that was matched by the regex.
    2484      * @param array  $rawattr The original unmodified attributes.
    2485      */
    2486     return apply_filters( 'wp_embed_handler_audio', $audio, $attr, $url, $rawattr );
    2487 }
    2488 
    2489 /**
    2490  * Video embed handler callback.
    2491  *
    2492  * @since 3.6.0
    2493  *
    2494  * @param array  $matches The RegEx matches from the provided regex when calling wp_embed_register_handler().
    2495  * @param array  $attr    Embed attributes.
    2496  * @param string $url     The original URL that was matched by the regex.
    2497  * @param array  $rawattr The original unmodified attributes.
    2498  * @return string The embed HTML.
    2499  */
    2500 function wp_embed_handler_video( $matches, $attr, $url, $rawattr ) {
    2501     $dimensions = '';
    2502     if ( ! empty( $rawattr['width'] ) && ! empty( $rawattr['height'] ) ) {
    2503         $dimensions .= sprintf( 'width="%d" ', (int) $rawattr['width'] );
    2504         $dimensions .= sprintf( 'height="%d" ', (int) $rawattr['height'] );
    2505     }
    2506     $video = sprintf( '[video %s src="%s" /]', $dimensions, esc_url( $url ) );
    2507 
    2508     /**
    2509      * Filter the video embed output.
    2510      *
    2511      * @since 3.6.0
    2512      *
    2513      * @param string $video   Video embed output.
    2514      * @param array  $attr    An array of embed attributes.
    2515      * @param string $url     The original URL that was matched by the regex.
    2516      * @param array  $rawattr The original unmodified attributes.
    2517      */
    2518     return apply_filters( 'wp_embed_handler_video', $video, $attr, $url, $rawattr );
    25192199}
    25202200
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