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Add functions for generating metadata for video and audio, using the

Browse Source 
ID3 library. Also allows themes/plugins to add thumbnail support
to these media types. Think stuff like album art, movie covers, and
video freeze-frames.

props wonderboymusic. fixes #23673

git-svn-id: https://develop.svn.wordpress.org/trunk@23766 602fd350-edb4-49c9-b593-d223f7449a82
This commit is contained in:
Mark Jaquith
2013-03-21 04:55:42 +00:00
parent fa6afd2a63
commit 53ea4e0566
19 changed files with 20712 additions and 2 deletions
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wp-admin/includes/media.php
+137
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@@ -2397,3 +2397,140 @@ add_filter( 'media_upload_gallery', 'media_upload_gallery' );
add_filter( 'media_upload_library', 'media_upload_library' );
add_action( 'attachment_submitbox_misc_actions', 'attachment_submitbox_metadata' );
/**
* Parse ID3v2, ID3v1, and getID3 comments to extract usable data
*
* @since 3.6.0
*
* @param array $metadata An existing array with data
* @param array $data Data supplied by ID3 tags
*/
function wp_add_id3_tag_data( &$metadata, $data ) {
foreach ( array( 'id3v2', 'id3v1' ) as $version ) {
if ( ! empty( $data[$version]['comments'] ) ) {
foreach ( $data[$version]['comments'] as $key => $list ) {
if ( ! empty( $list ) ) {
$metadata[$key] = reset( $list );
// fix bug in byte stream analysis
if ( 'terms_of_use' === $key && 0 === strpos( $metadata[$key], 'yright notice.' ) )
$metadata[$key] = 'Cop' . $metadata[$key];
}
}
break;
}
}
if ( ! empty( $data['id3v2']['APIC'] ) ) {
$image = reset( $data['id3v2']['APIC']);
if ( ! empty( $image['data'] ) ) {
$metadata['image'] = array(
'data' => $image['data'],
'mime' => $image['image_mime'],
'width' => $image['image_width'],
'height' => $image['image_height']
);
}
} elseif ( ! empty( $data['comments']['picture'] ) ) {
$image = reset( $data['comments']['picture'] );
if ( ! empty( $image['data'] ) ) {
$metadata['image'] = array(
'data' => $image['data'],
'mime' => $image['image_mime']
);
}
}
}
/**
* Retrieve metadata from a video file's ID3 tags
*
* @since 3.6.0
*
* @param string $file Path to file.
* @return array|boolean Returns array of metadata, if found.
*/
function wp_read_video_metadata( $file ) {
if ( ! file_exists( $file ) )
return false;
$metadata = array();
if ( ! class_exists( 'getID3' ) )
require( ABSPATH . WPINC . '/ID3/class-getid3.php' );
$id3 = new getID3();
$data = $id3->analyze( $file );
if ( isset( $data['video']['lossless'] ) )
$metadata['lossless'] = $data['video']['lossless'];
if ( ! empty( $data['video']['bitrate'] ) )
$metadata['bitrate'] = (int) $data['video']['bitrate'];
if ( ! empty( $data['video']['bitrate_mode'] ) )
$metadata['bitrate_mode'] = $data['video']['bitrate_mode'];
if ( ! empty( $data['filesize'] ) )
$metadata['filesize'] = (int) $data['filesize'];
if ( ! empty( $data['mime_type'] ) )
$metadata['mime_type'] = $data['mime_type'];
if ( ! empty( $data['playtime_seconds'] ) )
$metadata['length'] = (int) ceil( $data['playtime_seconds'] );
if ( ! empty( $data['playtime_string'] ) )
$metadata['length_formatted'] = $data['playtime_string'];
if ( ! empty( $data['video']['resolution_x'] ) )
$metadata['width'] = (int) $data['video']['resolution_x'];
if ( ! empty( $data['video']['resolution_y'] ) )
$metadata['height'] = (int) $data['video']['resolution_y'];
if ( ! empty( $data['fileformat'] ) )
$metadata['fileformat'] = $data['fileformat'];
if ( ! empty( $data['video']['dataformat'] ) )
$metadata['dataformat'] = $data['video']['dataformat'];
if ( ! empty( $data['video']['encoder'] ) )
$metadata['encoder'] = $data['video']['encoder'];
if ( ! empty( $data['video']['codec'] ) )
$metadata['codec'] = $data['video']['codec'];
unset( $data['audio']['streams'] );
$metadata['audio'] = $data['audio'];
wp_add_id3_tag_data( $metadata, $data );
return $metadata;
}
/**
* Retrieve metadata from a audio file's ID3 tags
*
* @since 3.6.0
*
* @param string $file Path to file.
* @return array|boolean Returns array of metadata, if found.
*/
function wp_read_audio_metadata( $file ) {
if ( ! file_exists( $file ) )
return false;
$metadata = array();
if ( ! class_exists( 'getID3' ) )
require( ABSPATH . WPINC . '/ID3/class-getid3.php' );
$id3 = new getID3();
$data = $id3->analyze( $file );
if ( ! empty( $data['audio'] ) ) {
unset( $data['audio']['streams'] );
$metadata = $data['audio'];
}
if ( ! empty( $data['fileformat'] ) )
$metadata['fileformat'] = $data['fileformat'];
if ( ! empty( $data['filesize'] ) )
$metadata['filesize'] = (int) $data['filesize'];
if ( ! empty( $data['mime_type'] ) )
$metadata['mime_type'] = $data['mime_type'];
if ( ! empty( $data['playtime_seconds'] ) )
$metadata['length'] = (int) ceil( $data['playtime_seconds'] );
if ( ! empty( $data['playtime_string'] ) )
$metadata['length_formatted'] = $data['playtime_string'];
wp_add_id3_tag_data( $metadata, $data );
return $metadata;
}