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<?php |
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/** |
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* Interface for any transcoder |
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* You must extend this class to create a new transcoder |
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*/ |
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require_once __DIR__."/../../../vendor/autoload.php"; |
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require_once __DIR__.'/../../utils/S3Utils.php'; |
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use SA\CpeSdk; |
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class BasicTranscoder |
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{ |
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public $activityLogKey; // Valling activity loggin key |
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public $activityObj; // Calling activity object |
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public $task; // Activity TASK |
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public $cpeLogger; // Logger |
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public $cpeSqsWriter; // SQS write for sending msgs to client |
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public $cpeJsonValidator; // SQS write for sending msgs to client |
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public $s3Utils; // Used to manipulate S3 |
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public $executer; // Executer obj |
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const EXEC_VALIDATE_FAILED = "EXEC_VALIDATE_FAILED"; |
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const TRANSCODE_FAIL = "TRANSCODE_FAIL"; |
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// Types |
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const VIDEO = "VIDEO"; |
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const THUMB = "THUMB"; |
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const AUDIO = "AUDIO"; |
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const DOC = "DOC"; |
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const IMAGE = "IMAGE"; |
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public function __construct($activityObj, $task) |
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{ |
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$this->activityObj = $activityObj; |
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$this->activityLogKey = $activityObj->activityLogKey; |
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$this->task = $task; |
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$this->cpeLogger = $activityObj->cpeLogger; |
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$this->cpeSqsWriter = $activityObj->cpeSqsWriter; |
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$this->cpeJsonValidator = $activityObj->cpeJsonValidator; |
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$this->executer = new CommandExecuter($activityObj->cpeLogger); |
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$this->s3Utils = new S3Utils($activityObj->cpeLogger); |
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} |
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public function is_dir_empty($dir) |
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{ |
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if (!is_readable($dir)) return null; |
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$handle = opendir($dir); |
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while (false !== ($entry = readdir($handle))) { |
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if ($entry !== '.' && $entry !== '..') { |
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return false; |
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} |
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} |
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closedir($handle); |
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return true; |
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} |
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/************************************** |
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* GET ASSET METADATA INFO |
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* The methods below are used to run ffprobe on assets |
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* We capture as much info as possible on the input asset |
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*/ |
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// Execute FFPROBE to get asset information |
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public function get_asset_info($pathToInputFile) |
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{ |
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$pathToInputFile = escapeshellarg($pathToInputFile); |
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$ffprobeCmd = "ffprobe -v quiet -of json -show_format -show_streams $pathToInputFile"; |
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try { |
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// Execute FFMpeg to validate and get information about input video |
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$out = $this->executer->execute( |
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$ffprobeCmd, |
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1, |
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array( |
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1 => array("pipe", "w"), |
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2 => array("pipe", "w") |
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), |
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false, false, |
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false, 1 |
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); |
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} |
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catch (\Exception $e) { |
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$this->cpeLogger->log_out( |
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"ERROR", |
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basename(__FILE__), |
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"Execution of command '".$ffprobeCmd."' failed.", |
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$this->activityLogKey |
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); |
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return false; |
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} |
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if (empty($out)) { |
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throw new CpeSdk\CpeException("Unable to execute FFProbe to get information about '$pathToInputFile'!", |
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self::EXEC_VALIDATE_FAILED); |
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} |
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// FFmpeg writes on STDERR ... |
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if (!($assetInfo = json_decode($out['out']))) { |
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throw new CpeSdk\CpeException("FFProbe returned invalid JSON!", |
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self::EXEC_VALIDATE_FAILED); |
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} |
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return ($assetInfo); |
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} |
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} |
sportarchive /
CloudTranscode
