forked from dmongeau/FFMPEG
/
FFMPEG.php
348 lines (263 loc) · 8.27 KB
/
FFMPEG.php
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<?php
class FFMPEG {
protected static $_config = array(
'bin' => 'ffmpeg',
'optionsWord' => array(
'bitrate' => 'b',
'duration' => 't',
'start' => 'ss',
'size' => 's',
'overwrite' => 'y'
)
);
protected $_inputFile;
protected $_options = array('main'=>array(), 'in'=>array(), 'out'=>array());
protected $_lastCommand;
protected $_lastOutput;
protected $_lastReturn;
public function __construct($inputFile = null, $options = array()) {
if(isset($inputFile)) $this->setInputFile($inputFile);
if(sizeof($options)) $this->setOptions($options);
}
public function isValid() {
$metadata = $this->getMetadata();
if(sizeof($metadata) && isset($metadata['format']) && (int)$metadata['duration'] > 0) return true;
return false;
}
public function isVideo() {
$metadata = $this->getMetadata();
if(sizeof($metadata) && isset($metadata['media']) && $metadata['media'] == 'video') return true;
return false;
}
public function isAudio() {
$metadata = $this->getMetadata();
if(sizeof($metadata) && isset($metadata['media']) && $metadata['media'] == 'audio') return true;
return false;
}
public function getMetadata() {
$output = $this->_exec('-i '.escapeshellarg($this->getInputFile()));
$metadata = array();
$metaHeader = false;
foreach($output as $line) {
if(preg_match('/^\s{2}Metadata\:/',$line)) {
$metaHeader = true;
} else if($metaHeader && preg_match('/^\s{2}([A-Za-z0-9]+)\:/',$line)) {
$metaHeader = false;
} else if($metaHeader) {
if(preg_match('/([A-Za-z0-9]+)\s+\: (.*)/',$line,$matches)) {
$key = strtolower($matches[1]);
if(!in_array($key,array('duration','starttime','totalduration'))) {
if($key == 'bytelength') $key = 'size';
$metadata[$key] = $matches[2];
}
}
}
if(!$metaHeader) {
if(preg_match('/^\s{2}Duration\: ([0-9\:\.]{11})/',$line,$matches)) {
$duration = explode(':',$matches[1]);
$metadata['duration'] = ((int)$duration[0]*3600)+((int)$duration[1]*60)+((float)$duration[2]);
} else if(preg_match('/^Input #0, ([A-Za-z0-9\,]+) from/',$line,$matches)) {
$metadata['format'] = explode(',',trim(strtolower($matches[1]),','));
if(sizeof($metadata['format']) == 1) $metadata['format'] = $metadata['format'][0];
} else if(preg_match('/^\s{4}Stream #0.0[^\:]*: (Video|Audio)\: (.*)/',$line,$matches)) {
$metadata['media'] = strtolower($matches[1]);
$parts = explode(',',$matches[2]);
if($metadata['media'] == 'video') {
$metadata['codec'] = strtolower(trim($parts[0]));
$metadata['color'] = strtolower(trim($parts[1]));
for($i = 2; $i < sizeof($parts); $i++) {
if(preg_match('/([0-9]+)x([0-9]+)/',$parts[$i],$matches)) {
$metadata['width'] = (int)$matches[1];
$metadata['height'] = (int)$matches[2];
} else if(preg_match('/([0-9]+) kb\/s/',$parts[$i],$matches)) {
$metadata['videorate'] = (int)$matches[1];
}
}
} else if($metadata['media'] == 'audio') {
$metadata['audio'] = strtolower(trim($parts[0]));
for($i = 1; $i < sizeof($parts); $i++) {
if(preg_match('/([0-9]+) Hz/',$parts[$i],$matches)) {
$metadata['frequency'] = (int)$matches[1];
} else if(preg_match('/(stereo|mono)/',$parts[$i],$matches)) {
$metadata['stereo'] = $matches[1] == 'stereo' ? true:false;
} else if(preg_match('/([0-9]+) kb\/s/',$parts[$i],$matches)) {
$metadata['audiorate'] = (int)$matches[1];
}
}
}
}
}
}
return $metadata;
}
public function getDuration() {
$metadata = $this->getMetadata();
return isset($metadata['duration']) ? $metadata['duration']:0;
}
public function convert($output, $optionsIn = array() , $optionsOut = array()) {
if(sizeof($optionsIn)) $this->setOptions($optionsIn,'in');
if(sizeof($optionsOut)) $this->setOptions($optionsOut,'out');
$this->_execute($output);
}
public function getImages($path, $name = 'image%d.jpg', $optionsIn = array() , $optionsOut = array()) {
if(sizeof($optionsIn)) $this->setOptions($optionsIn,'in');
if(sizeof($optionsOut)) $this->setOptions($optionsOut,'out');
$this->_execute(rtrim($path,'/').'/'.ltrim($name,'/'));
}
public function getThumbnail($path, $start = 'half') {
if($start == 'half') {
$metadata = $this->getMetadata();
$duration = $metadata['duration'];
$start = floor($duration/2);
}
else if(!is_numeric($start)) $start = 30;
$file = basename($path);
$path = dirname($path);
$this->getImages($path.'/', $file, array(), array('start'=>$start));
}
/**
*
* Options
*
*/
public function setOptions($options,$category = 'main') {
$this->_options[$category] = $options;
}
public function addOption($option, $value = null,$category = 'main') {
$this->_options[$category][$option] = $value;
}
public function getOptions($category = 'main') {
return $this->_options[$category];
}
public function hasOptions($category = 'main') {
return isset($this->_options[$category]) && sizeof($this->_options[$category]) ? true:false;
}
protected function _prepareOptions($category = 'main') {
$words = self::getConfig('optionsWord');
$options = $this->getOptions($category);
$str = array();
$index = 0;
foreach($options as $option => $value) {
if(is_numeric($option) && $option === $index) {
$option = $value;
$value = null;
$index++;
}
$option = isset($words[$option]) ? '-'.$words[$option]:$option;
$str[] = $option.(isset($value) ? ' '.escapeshellcmd($value):'');
}
return implode(' ',$str);
}
/**
*
* Last output
*
*/
public function getLastOutput() {
return $this->_lastOutput;
}
/**
*
* Last command
*
*/
public function getLastCommand() {
return $this->_lastCommand;
}
/**
*
* Last return
*
*/
public function getLastReturn() {
return $this->_lastReturn;
}
/**
*
* Input file
*
*/
public function setInputFile($file) {
$this->_inputFile = $file;
}
public function getInputFile() {
return $this->_inputFile;
}
/**
*
* Execute the command line
*
*/
protected function _execute($output = null) {
$parts = array();
if($this->hasOptions('main')) $parts[] = $this->_prepareOptions('main');
if($this->hasOptions('in')) $parts[] = $this->_prepareOptions('in');
$parts[] = '-i '.escapeshellarg($this->getInputFile());
if($this->hasOptions('out')) $parts[] = $this->_prepareOptions('out');
if(isset($output)) $parts[] = escapeshellarg($output);
$command = implode(' ',$parts);
$this->_lastOutput = $this->_exec($command);
return $this->_lastOutput;
}
protected function _exec($command) {
$command = self::getConfig('bin').' '.trim($command).' 2>&1';
$this->_lastCommand = $command;
$descriptorspec = array(
0 => array("pipe", "r"),
1 => array("pipe", "w"),
2 => array("file", "/tmp/error-output.txt", "a")
);
$cwd = '/tmp';
$process = proc_open($command, $descriptorspec, $pipes, $cwd);
if (is_resource($process)) {
$output = explode("\n",stream_get_contents($pipes[1]));
fclose($pipes[0]);
fclose($pipes[1]);
$this->_lastReturn = proc_close($process);
return $output;
}
}
/**
*
* Handle command return code
*
*/
protected function _catchError($code) {
switch((int)$code) {
case 0:
return true;
break;
case 2:
throw new Exception('Misuse of shell builtins, according to Bash documentation',$code);
break;
case 126:
throw new Exception('Cannot execute command',$code);
break;
case 127:
throw new Exception('Command not found',$code);
break;
case 128:
throw new Exception('Invalid argument',$code);
break;
case 130:
throw new Exception('Script terminated by Control-C',$code);
break;
default:
throw new Exception('An error occured',$code);
break;
}
}
/**
*
* Global configuration
*
*/
public static function setConfig($name, $value = null) {
if(!isset($value) && is_array($name)) self::$_config = $name;
else if(isset($value) && !is_array($name)) self::$_config[$name] = $value;
}
public static function getConfig($name = null) {
if(isset($name)) return isset(self::$_config[$name]) ? self::$_config[$name]:null;
else return self::$_config;
}
}