'Wavesurfer',
'vendor url' => 'http://waveform.fm',
'download url' => 'http://www.wavesurfer.fm',
'version callback' => 'wavesurfer_bypass_version_control',
'files' => array(
'js' => array(
'dist/wavesurfer.min.js',
'dist/plugin/wavesurfer.regions.min.js',
'dist/plugin/wavesurfer.spectrogram.min.js'
)
)
);
return $libraries;
}
/**
* Callback function to bypass the library version check.
*/
function wavesurfer_bypass_version_control(){
return TRUE;
}
/**
* Implements hook_field_formatter_info().
*/
function wavesurfer_field_formatter_info(){
$info = array(
'wavesurfer_waveform' => array(
'label' => 'Wavesurfer waveform player',
'field types' => array(
'file'
),
'description' => t('Displays a waveform player generated from an audio file'),
'settings' => array(
'wavecolor' => '000000',
'progress_colour' => '000000'
)
)
);
return $info;
}
/**
* Implements hook_field_formatter_view().
*/
function wavesurfer_field_formatter_view($entity_type, $entity, $field, $instance, $langcode, $items, $display){
$elements = array();
$settings = $display['settings'];
switch($display['type']){
case 'wavesurfer_waveform':
foreach($items as $delta => $item){
$elements[] = array(
'#markup' => theme('wavesurfer_waveform', array(
'file' => (object)$item,
'settings' => $settings
))
);
}
break;
}
return $elements;
}
/**
* Implements hook_field_formatter_settings_summary().
*
* Displays the field formatter settings for the Wavesurfer field.
*/
function wavesurfer_field_formatter_settings_summary($field, $instance, $view_mode){
$display = $instance['display'][$view_mode];
$settings = $display['settings'];
$summary = array();
switch($display['type']){
case 'wavesurfer_waveform':
$summary[] = t('Wave Colour: %wavecolor', array(
'%wavecolor' => $settings['wavecolor']
));
$summary[] = t('Progress Colour: %progress_colour', array(
'%progress_colour' => $settings['progress_colour']
));
break;
}
return implode('
', $summary);
}
/**
* Implements hook_field_formatter_settings_form().
*
* Adds colour settings to the field settings for Wavesurfer field.
*/
function wavesurfer_field_formatter_settings_form($field, $instance, $view_mode, $form, &$form_state){
$display = $instance['display'][$view_mode];
$settings = $display['settings'];
$element = array();
switch($display['type']){
case 'wavesurfer_waveform':
$element['wavecolor'] = array(
'#type' => 'jquery_colorpicker',
'#title' => t('Background Waveform Colour'),
'#required' => TRUE,
'#default_value' => $settings['wavecolor']
);
$element['progress_colour'] = array(
'#type' => 'jquery_colorpicker',
'#title' => t('Progress Waveform Colour'),
'#required' => TRUE,
'#default_value' => $settings['progress_colour']
);
break;
}
return $element;
}
/**
* Implements hook_theme().
*/
function wavesurfer_theme(){
$theme = array();
$theme['wavesurfer_waveform'] = array(
'variables' => array(
'file' => NULL
),
'settings' => array()
);
return $theme;
}
/**
* Theme function for the Wavesurfer Audio field.
*/
function theme_wavesurfer_waveform($variables){
$file = $variables['file'];
// Exit if no valid file.
if(!$file){return '';}
// Check mime type supported.
$allowed_mimetypes = array(
'audio/mpeg',
'audio/ogg',
'audio/x-wav'
);
if(!in_array($file->filemime, $allowed_mimetypes)){return 'Mime type not supported by Wavesurfer
$value){
$output .= " data-$key='$value'";
}
$output .= '>
';
$output .= '';
$output .= l('Download', $audiofile);
$output .= '
';
return $output;
}
function wavesurfer_duration_wav($file){
$fp = fopen($file, 'r');
if(fread($fp, 4) == "RIFF"){
fseek($fp, 20);
$rawheader = fread($fp, 16);
$header = unpack('vtype/vchannels/Vsamplerate/Vbytespersec/valignment/vbits', $rawheader);
$pos = ftell($fp);
while(fread($fp, 4) != "data" && !feof($fp)){
$pos++;
fseek($fp, $pos);
}
$rawheader = fread($fp, 4);
$data = unpack('Vdatasize', $rawheader);
$sec = $data['datasize'] / $header['bytespersec'];
return $sec;
}
}