/**
* Test for core_media_renderer split_alternatives.
*/
public function test_split_alternatives()
{
// Single URL - identical moodle_url.
$mp4 = 'http://example.org/test.mp4';
$result = core_media::split_alternatives($mp4, $w, $h);
$this->assertEquals($mp4, $result[0]->out(false));
// Width and height weren't specified.
$this->assertEquals(0, $w);
$this->assertEquals(0, $h);
// Two URLs - identical moodle_urls.
$webm = 'http://example.org/test.webm';
$result = core_media::split_alternatives("{$mp4}#{$webm}", $w, $h);
$this->assertEquals($mp4, $result[0]->out(false));
$this->assertEquals($webm, $result[1]->out(false));
// Two URLs plus dimensions.
$size = 'd=400x280';
$result = core_media::split_alternatives("{$mp4}#{$webm}#{$size}", $w, $h);
$this->assertEquals($mp4, $result[0]->out(false));
$this->assertEquals($webm, $result[1]->out(false));
$this->assertEquals(400, $w);
$this->assertEquals(280, $h);
// Two URLs plus legacy dimensions (use last one).
$result = core_media::split_alternatives("{$mp4}?d=1x1#{$webm}?{$size}", $w, $h);
$this->assertEquals($mp4, $result[0]->out(false));
$this->assertEquals($webm, $result[1]->out(false));
$this->assertEquals(400, $w);
$this->assertEquals(280, $h);
}
public function embed($urls, $name, $width, $height, $options)
{
// If link is turned off, return empty.
if (!empty($options[core_media::OPTION_NO_LINK])) {
return '';
}
// Build up link content.
$output = '';
foreach ($urls as $url) {
$title = core_media::get_filename($url);
$printlink = html_writer::link($url, $title, array('class' => 'mediafallbacklink'));
if ($output) {
// Where there are multiple available formats, there are fallback links
// for all formats, separated by /.
$output .= ' / ';
}
$output .= $printlink;
}
return $output;
}
/**
* Given a list of URLs, returns a reduced array containing only those URLs
* which are supported by this player. (Empty if none.)
* @param array $urls Array of moodle_url
* @param array $options Options (same as will be passed to embed)
* @return array Array of supported moodle_url
*/
public function list_supported_urls(array $urls, array $options = array())
{
$extensions = $this->get_supported_extensions();
$result = array();
foreach ($urls as $url) {
// If RTMP support is disabled, skip the URL.
if (!get_config('filter_jwplayer', 'supportrtmp') && $url->get_scheme() === 'rtmp') {
continue;
}
// If RTMP support is enabled, URL is supported.
if (get_config('filter_jwplayer', 'supportrtmp') && $url->get_scheme() === 'rtmp') {
$result[] = $url;
continue;
}
if (in_array(core_media::get_extension($url), $extensions)) {
// URL is matching one of enabled extensions.
$result[] = $url;
}
}
return $result;
}
/**
* Given a list of URLs, returns a reduced array containing only those URLs
* which are supported by this player.
*
* This media player only supports local urls.
*
* @param array $urls Array of moodle_url
* @param array $options Options (same as will be passed to embed)
* @return array Array of supported moodle_url
*/
public function list_supported_urls(array $urls, array $options = array())
{
$extensions = $this->get_supported_extensions();
$result = array();
foreach ($urls as $url) {
try {
$url->out_as_local_url();
} catch (coding_exception $e) {
continue;
}
if (in_array(core_media::get_extension($url), $extensions)) {
$result[] = $url;
}
}
return $result;
}
/**
* Replace link with embedded content, if supported.
*
* @param array $matches
* @return string
*/
private function callback(array $matches)
{
global $CFG, $PAGE;
// Check if we ignore it.
if (preg_match('/class="[^"]*nomediaplugin/i', $matches[0])) {
return $matches[0];
}
// Get name.
$name = trim($matches[2]);
if (empty($name) or strpos($name, 'http') === 0) {
$name = '';
// Use default name.
}
// Split provided URL into alternatives.
$urls = core_media::split_alternatives($matches[1], $width, $height);
$options = array();
// Allow SWF (or not).
if ($this->trusted) {
$options[core_media::OPTION_TRUSTED] = true;
}
// We could test whether embed is possible using can_embed, but to save
// time, let's just embed it with the 'fallback to blank' option which
// does most of the same stuff anyhow.
$options[core_media::OPTION_FALLBACK_TO_BLANK] = true;
// NOTE: Options are not passed through from filter because the 'embed'
// code does not recognise filter options (it's a different kind of
// option-space) as it can be used in non-filter situations.
$result = $this->mediarenderer->embed_alternatives($urls, $name, $width, $height, $options);
// If something was embedded, return it, otherwise return original.
if ($result !== '') {
return $result;
} else {
return $matches[0];
}
}
/**
* Callback function for preg_replace_callback.
*
* @param array $matches Match array with 1 being the url and 2 being the innerText
* @return string The url, either transformed or as is
*/
private function callback(array $matches)
{
// Guard against runtime errors
try {
// Get name
$name = trim($matches[2]);
if (empty($name) or strpos($name, 'http') === 0) {
$name = '';
// Use default name
}
// Split provided URL into alternatives
$urls = core_media::split_alternatives($matches[1], $width, $height);
$result = $this->mediarenderer->embed_alternatives($urls, $name, $width, $height);
// If something was embedded, return it, otherwise return original
if ($result !== '') {
return $result;
} else {
return $matches[0];
}
} catch (Exception $e) {
error_log('filter_viewerjs encountered an exception: ' . $e->getMessage(), 0);
return $matches[0];
}
}
