Add separate classes for local and remote file access
Improves parsing of remote files by using HTTP Range requests so it doesn't have to download the whole file. Signed-off-by: Markus Birth <markus@birth-online.de>
This commit is contained in:
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83
src/Mp3FileLocal.php
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83
src/Mp3FileLocal.php
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@ -0,0 +1,83 @@
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<?php
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namespace wapmorgan\Mp3Info;
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class Mp3FileLocal
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{
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public string $fileName;
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protected int $fileSize;
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private $_filePtr;
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/**
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* Creates a new local file object.
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*
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* @param string $fileName URL to open
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*/
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public function __construct(string $fileName)
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{
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$this->fileName = $fileName;
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$this->_filePtr = fopen($this->fileName, 'rb');
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$this->fileSize = filesize($this->fileName);
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}
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/**
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* Returns the file size
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*
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* @return int File size
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*/
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public function getFileSize(): int
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{
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return $this->fileSize;
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}
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/**
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* Returns the given amount of Bytes from the current file position.
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*
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* @param int $numBytes Bytes to read
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*
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* @return string Read Bytes
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*/
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public function getBytes(int $numBytes): string
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{
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return fread($this->_filePtr, $numBytes);
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}
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/**
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* Returns the current file position
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*
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* @return int File position
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*/
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public function getFilePos(): int
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{
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return ftell($this->_filePtr);
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}
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/**
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* Sets the file point to the given position.
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*
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* @param int $posBytes Position to jump to
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*
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* @return bool TRUE if successful
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*/
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public function seekTo(int $posBytes): bool
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{
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$result = fseek($this->_filePtr, $posBytes);
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return ($result == 0);
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}
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/**
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* Advances the file pointer the given amount.
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*
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* @param int $posBytes Bytes to advance
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*
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* @return bool TRUE if successful
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*/
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public function seekForward(int $posBytes): bool
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{
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$newPos = $this->getFilePos() + $posBytes;
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return $this->seekTo($newPos);
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}
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}
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181
src/Mp3FileRemote.php
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181
src/Mp3FileRemote.php
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@ -0,0 +1,181 @@
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<?php
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namespace wapmorgan\Mp3Info;
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class Mp3FileRemote
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{
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public string $fileName;
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public int $blockSize;
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protected $buffer;
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protected int $filePos;
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protected $fileSize;
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/**
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* Creates a new remote file object.
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*
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* @param string $fileName URL to open
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* @param int $blockSize Size of the blocks to query from the server (default: 4096)
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*/
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public function __construct(string $fileName, int $blockSize = 4096)
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{
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$this->fileName = $fileName;
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$this->blockSize = $blockSize;
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$this->buffer = [];
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$this->filePos = 0;
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$this->fileSize = $this->_readFileSize();
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}
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/**
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* Returns the file size
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*
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* @return int File size
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*/
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public function getFileSize(): int
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{
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return $this->fileSize;
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}
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/**
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* Makes a HEAD request to get the file size
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*
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* @return int Content-Length header
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*/
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private function _readFileSize(): int
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{
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// make HTTP HEAD request to get Content-Length
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$context = stream_context_create([
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'http' => [
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'method' => 'HEAD',
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],
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]);
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$result = get_headers($this->fileName, true, $context);
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return $result['Content-Length'];
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}
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/**
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* Returns the given amount of Bytes from the current file position.
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*
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* @param int $numBytes Bytes to read
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*
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* @return string Read Bytes
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*/
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public function getBytes(int $numBytes): string
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{
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$blockId = intdiv($this->filePos, $this->blockSize);
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$blockPos = $this->filePos % $this->blockSize;
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$output = [];
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do {
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$this->downloadBlock($blockId); // make sure we have this block
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if ($blockPos + $numBytes >= $this->blockSize) {
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// length of request is more than this block has, truncate to block len
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$subLen = $this->blockSize - $blockPos;
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} else {
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// requested length fits inside this block
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$subLen = $numBytes;
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}
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// $subLen = ($blockPos + $numBytes >= $this->blockSize) ? ($this->blockSize - $blockPos) : $numBytes;
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$output[] = substr($this->buffer[$blockId], $blockPos, $subLen);
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$this->filePos += $subLen;
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$numBytes -= $subLen;
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// advance to next block
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$blockPos = 0;
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$blockId++;
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} while ($numBytes > 0);
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return implode('', $output);
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}
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/**
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* Returns the current file position
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*
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* @return int File position
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*/
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public function getFilePos(): int
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{
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return $this->filePos;
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}
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/**
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* Sets the file pointer to the given position.
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*
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* @param int $posBytes Position to jump to
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*
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* @return bool TRUE if successful
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*/
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public function seekTo(int $posBytes): bool
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{
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if ($posBytes < 0 || $posBytes > $this->fileSize) {
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return false;
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}
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$this->filePos = $posBytes;
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return true;
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}
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/**
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* Advances the file pointer the given amount.
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*
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* @param int $posBytes Bytes to advance
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*
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* @return bool TRUE if successful
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*/
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public function seekForward(int $posBytes): bool
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{
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$newPos = $this->filePos + $posBytes;
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return $this->seekTo($newPos);
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}
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/**
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* Downloads the given block if needed
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*
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* @param int $blockNo Block to download
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*
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* @return bool TRUE if successful
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*/
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protected function downloadBlock(int $blockNo): bool
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{
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if (array_key_exists($blockNo, $this->buffer)) {
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// already downloaded
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return true;
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}
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$bytesFrom = $blockNo * $this->blockSize;
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$bytesTo = $bytesFrom + $this->blockSize - 1;
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// https://developer.mozilla.org/en-US/docs/Web/HTTP/Headers/Range
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$context = stream_context_create([
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'http' => [
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'method' => 'GET',
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'header' => [
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'Range: bytes=' . $bytesFrom . '-' . $bytesTo,
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],
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],
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]);
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$filePtr = fopen($this->fileName, 'rb', false, $context);
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$this->buffer[$blockNo] = fread($filePtr, $this->blockSize);
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$status = stream_get_meta_data($filePtr);
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$httpStatus = explode(' ', $status['wrapper_data'][0])[1];
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if ($httpStatus != '206') {
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if ($httpStatus != '200') {
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echo 'Download error!' . PHP_EOL;
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var_dump($status);
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return false;
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}
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echo 'Server doesn\'t support partial content!' . PHP_EOL;
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// Content received is whole file from start
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if ($blockNo != 0) {
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// move block to start if needed
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$this->buffer[0] =& $this->buffer[$blockNo];
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unset($this->buffer[$blockNo]);
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$blockNo = 0;
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}
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// receive remaining parts while we're at it
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while (!feof($filePtr)) {
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$blockNo++;
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$this->buffer[$blockNo] = fread($filePtr, $this->blockSize);
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}
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}
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fclose($filePtr);
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return true;
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}
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}
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287
src/Mp3Info.php
287
src/Mp3Info.php
@ -1,8 +1,14 @@
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<?php
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namespace wapmorgan\Mp3Info;
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use Exception;
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use RuntimeException;
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require __DIR__ . '/Mp3FileLocal.php';
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require __DIR__ . '/Mp3FileRemote.php';
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use \wapmorgan\Mp3Info\Mp3FileLocal;
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use \wapmorgan\Mp3Info\Mp3FileRemote;
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use \Exception;
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use \RuntimeException;
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/**
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* This class extracts information about an mpeg audio. (supported mpeg versions: MPEG-1, MPEG-2)
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@ -79,6 +85,11 @@ class Mp3Info {
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public static $framesCountRead = 2;
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/**
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* @var Mp3File File object for I/O handling
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*/
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protected $fileObj;
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/**
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* @var int MPEG codec version (1 or 2 or 2.5 or undefined)
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*/
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@ -208,29 +219,21 @@ class Mp3Info {
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*
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* @throws \Exception
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*/
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public function __construct($filename, $parseTags = false) {
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public function __construct(string $filename, bool $parseTags = false)
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{
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if (self::$_bitRateTable === null)
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self::$_bitRateTable = require dirname(__FILE__).'/../data/bitRateTable.php';
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if (self::$_sampleRateTable === null)
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self::$_sampleRateTable = require dirname(__FILE__).'/../data/sampleRateTable.php';
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$this->_fileName = $filename;
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$isLocal = (strpos($filename, '://') === false);
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if (!$isLocal) {
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$this->_fileSize = static::getUrlContentLength($filename);
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if (str_contains($filename, '://')) {
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$this->fileObj = new Mp3FileRemote($filename);
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} else {
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if (!file_exists($filename)) {
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throw new \Exception('File ' . $filename . ' is not present!');
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}
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$this->_fileSize = filesize($filename);
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}
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if ($isLocal and !static::isValidAudio($filename)) {
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throw new \Exception('File ' . $filename . ' is not mpeg/audio!');
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$this->fileObj = new Mp3FileLocal($filename);
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}
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$mode = $parseTags ? self::META | self::TAGS : self::META;
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$this->audioSize = $this->parseAudio($this->_fileName, $this->_fileSize, $mode);
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$this->audioSize = $this->parseAudio($mode);
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}
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@ -248,7 +251,7 @@ class Mp3Info {
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return false;
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}
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fseek($fp, $this->coverProperties['offset']);
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$data = fread($fp, $this->coverProperties['size']);
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$data = $this->fileObj->getBytes($this->coverProperties['size']);
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fclose($fp);
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return $data;
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}
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@ -259,44 +262,32 @@ class Mp3Info {
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* ID3V2 TAG - provides a lot of meta data. [optional]
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* MPEG AUDIO FRAMES - contains audio data. A frame consists of a frame header and a frame data. The first frame may contain extra information about mp3 (marked with "Xing" or "Info" string). Rest of frames can contain only audio data.
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* ID3V1 TAG - provides a few of meta data. [optional]
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* @param string $filename
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* @param int $fileSize
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* @param int $mode
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* @return float|int
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* @throws \Exception
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*/
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private function parseAudio($filename, $fileSize, $mode) {
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private function parseAudio($mode) {
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$time = microtime(true);
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// create temp storage for media
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if (strpos($filename, '://') !== false) {
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$fp = fopen('php://memory', 'rwb');
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fwrite($fp, file_get_contents($filename));
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rewind($fp);
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} else {
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$fp = fopen($filename, 'rb');
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}
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/** @var int Size of audio data (exclude tags size) */
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$audioSize = $fileSize;
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$audioSize = $this->fileObj->getFileSize();
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// parse tags
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if (fread($fp, 3) == self::TAG2_SYNC) {
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if ($mode & self::TAGS) $audioSize -= ($this->_id3Size = $this->readId3v2Body($fp));
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else {
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fseek($fp, 2, SEEK_CUR); // 2 bytes of tag version
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fseek($fp, 1, SEEK_CUR); // 1 byte of tag flags
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$sizeBytes = $this->readBytes($fp, 4);
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array_walk($sizeBytes, function (&$value) {
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$value = substr(str_pad(base_convert($value, 10, 2), 8, 0, STR_PAD_LEFT), 1);
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});
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$size = bindec(implode($sizeBytes)) + 10;
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if ($this->fileObj->getBytes(3) == self::TAG2_SYNC) {
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if ($mode & self::TAGS) {
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$audioSize -= ($this->_id3Size = $this->readId3v2Body());
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} else {
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$this->fileObj->seekForward(2); // 2 bytes of tag version
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$this->fileObj->seekForward(1); // 1 byte of tag flags
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$sizeBytes = unpack('C4', $this->fileObj->getBytes(4));
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$size = $sizeBytes[1] << 21 | $sizeBytes[2] << 14 | $sizeBytes[3] << 7 | $sizeBytes[4];
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$size += 10; // add header size
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$audioSize -= ($this->_id3Size = $size);
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}
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}
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fseek($fp, $fileSize - 128);
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if (fread($fp, 3) == self::TAG1_SYNC) {
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$this->fileObj->seekTo($this->fileObj->getFileSize() - 128);
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if ($this->fileObj->getBytes(3) == self::TAG1_SYNC) {
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if ($mode & self::TAGS) $audioSize -= $this->readId3v1Body($fp);
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else $audioSize -= 128;
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}
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@ -305,17 +296,17 @@ class Mp3Info {
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$this->fillTags();
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}
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fseek($fp, 0);
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$this->fileObj->seekTo(0);
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// audio meta
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if ($mode & self::META) {
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if ($this->_id3Size !== null) fseek($fp, $this->_id3Size);
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if ($this->_id3Size !== null) $this->fileObj->seekTo($this->_id3Size);
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/**
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* First frame can lie. Need to fix in the future.
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* @link https://github.com/wapmorgan/Mp3Info/issues/13#issuecomment-447470813
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* Read first N frames
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*/
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for ($i = 0; $i < self::$framesCountRead; $i++) {
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$framesCount = $this->readMpegFrame($fp);
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$framesCount = $this->readMpegFrame();
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}
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$this->_framesCount = $framesCount !== null
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@ -338,7 +329,6 @@ class Mp3Info {
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// Calculate total number of audio samples (framesCount * sampleInFrameCount) / samplesInSecondCount
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$this->duration = ($this->_framesCount - 1) * $samples_in_second / $this->sampleRate;
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}
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fclose($fp);
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$this->_parsingTime = microtime(true) - $time;
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return $audioSize;
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@ -346,48 +336,52 @@ class Mp3Info {
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/**
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* Read first frame information.
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* @param resource $fp
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* @return int Number of frames (if present if first frame of VBR-file)
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* @throws \Exception
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*/
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private function readMpegFrame($fp) {
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$header_seek_pos = ftell($fp) + self::$headerSeekLimit;
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private function readMpegFrame() {
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$header_seek_pos = $this->fileObj->getFilePos() + self::$headerSeekLimit;
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do {
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$pos = ftell($fp);
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$first_header_byte = $this->readBytes($fp, 1);
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if ($first_header_byte[0] === 0xFF) {
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$second_header_byte = $this->readBytes($fp, 1);
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if ((($second_header_byte[0] >> 5) & 0b111) == 0b111) {
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fseek($fp, $pos);
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$header_bytes = $this->readBytes($fp, 4);
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$pos = $this->fileObj->getFilePos();
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$first_header_byte = $this->fileObj->getBytes(1);
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if (ord($first_header_byte[0]) === 0xFF) {
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$second_header_byte = $this->fileObj->getBytes(1);
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if (((ord($second_header_byte[0]) >> 5) & 0b111) == 0b111) {
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$this->fileObj->seekTo($pos);
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$header_bytes = $this->fileObj->getBytes(4);
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break;
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} else {
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$this->fileObj->seekForward(-1);
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}
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} else {
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$this->fileObj->seekForward(-1);
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}
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fseek($fp, 1, SEEK_CUR);
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} while (ftell($fp) <= $header_seek_pos);
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$this->fileObj->seekForward(1);
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} while ($this->fileObj->getFilePos() <= $header_seek_pos);
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if (!isset($header_bytes) || $header_bytes[0] !== 0xFF || (($header_bytes[1] >> 5) & 0b111) != 0b111) {
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if (!isset($header_bytes) || ord($header_bytes[0]) !== 0xFF || ((ord($header_bytes[1]) >> 5) & 0b111) != 0b111) {
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throw new \Exception('At '.$pos
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.'(0x'.dechex($pos).') should be a frame header!');
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}
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switch ($header_bytes[1] >> 3 & 0b11) {
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switch (ord($header_bytes[1]) >> 3 & 0b11) {
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case 0b00: $this->codecVersion = self::MPEG_25; break;
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case 0b01: $this->codecVersion = self::CODEC_UNDEFINED; break;
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case 0b01: return null; break;
|
||||
case 0b10: $this->codecVersion = self::MPEG_2; break;
|
||||
case 0b11: $this->codecVersion = self::MPEG_1; break;
|
||||
}
|
||||
|
||||
switch ($header_bytes[1] >> 1 & 0b11) {
|
||||
switch (ord($header_bytes[1]) >> 1 & 0b11) {
|
||||
case 0b01: $this->layerVersion = self::LAYER_3; break;
|
||||
case 0b10: $this->layerVersion = self::LAYER_2; break;
|
||||
case 0b11: $this->layerVersion = self::LAYER_1; break;
|
||||
}
|
||||
|
||||
$this->bitRate = self::$_bitRateTable[$this->codecVersion][$this->layerVersion][$header_bytes[2] >> 4];
|
||||
$this->sampleRate = self::$_sampleRateTable[$this->codecVersion][($header_bytes[2] >> 2) & 0b11];
|
||||
$this->bitRate = self::$_bitRateTable[$this->codecVersion][$this->layerVersion][ord($header_bytes[2]) >> 4];
|
||||
$this->sampleRate = self::$_sampleRateTable[$this->codecVersion][(ord($header_bytes[2]) >> 2) & 0b11];
|
||||
if ($this->sampleRate === false) return null;
|
||||
|
||||
switch ($header_bytes[3] >> 6) {
|
||||
switch (ord($header_bytes[3]) >> 6) {
|
||||
case 0b00: $this->channel = self::STEREO; break;
|
||||
case 0b01: $this->channel = self::JOINT_STEREO; break;
|
||||
case 0b10: $this->channel = self::DUAL_MONO; break;
|
||||
@ -397,69 +391,54 @@ class Mp3Info {
|
||||
$vbr_offset = self::$_vbrOffsets[$this->codecVersion][$this->channel == self::MONO ? 0 : 1];
|
||||
|
||||
// check for VBR
|
||||
fseek($fp, $pos + $vbr_offset);
|
||||
if (fread($fp, 4) == self::VBR_SYNC) {
|
||||
$this->fileObj->seekTo($pos + $vbr_offset);
|
||||
if ($this->fileObj->getBytes(4) == self::VBR_SYNC) {
|
||||
$this->isVbr = true;
|
||||
$flagsBytes = $this->readBytes($fp, 4);
|
||||
$flagsBytes = $this->fileObj->getBytes(4);
|
||||
|
||||
// VBR frames count presence
|
||||
if (($flagsBytes[3] & 2)) {
|
||||
$this->vbrProperties['frames'] = implode(unpack('N', fread($fp, 4)));
|
||||
if ((ord($flagsBytes[3]) & 2)) {
|
||||
$this->vbrProperties['frames'] = implode(unpack('N', $this->fileObj->getBytes(4)));
|
||||
}
|
||||
// VBR stream size presence
|
||||
if ($flagsBytes[3] & 4) {
|
||||
$this->vbrProperties['bytes'] = implode(unpack('N', fread($fp, 4)));
|
||||
if (ord($flagsBytes[3]) & 4) {
|
||||
$this->vbrProperties['bytes'] = implode(unpack('N', $this->fileObj->getBytes(4)));
|
||||
}
|
||||
// VBR TOC presence
|
||||
if ($flagsBytes[3] & 1) {
|
||||
fseek($fp, 100, SEEK_CUR);
|
||||
if (ord($flagsBytes[3]) & 1) {
|
||||
$this->fileObj->seekForward(100);
|
||||
}
|
||||
// VBR quality
|
||||
if ($flagsBytes[3] & 8) {
|
||||
$this->vbrProperties['quality'] = implode(unpack('N', fread($fp, 4)));
|
||||
if (ord($flagsBytes[3]) & 8) {
|
||||
$this->vbrProperties['quality'] = implode(unpack('N', $this->fileObj->getBytes(4)));
|
||||
}
|
||||
}
|
||||
|
||||
// go to the end of frame
|
||||
if ($this->layerVersion == self::LAYER_1) {
|
||||
$this->_cbrFrameSize = floor((12 * $this->bitRate / $this->sampleRate + ($header_bytes[2] >> 1 & 0b1)) * 4);
|
||||
$this->_cbrFrameSize = floor((12 * $this->bitRate / $this->sampleRate + (ord($header_bytes[2]) >> 1 & 0b1)) * 4);
|
||||
} else {
|
||||
$this->_cbrFrameSize = floor(144 * $this->bitRate / $this->sampleRate + ($header_bytes[2] >> 1 & 0b1));
|
||||
$this->_cbrFrameSize = floor(144 * $this->bitRate / $this->sampleRate + (ord($header_bytes[2]) >> 1 & 0b1));
|
||||
}
|
||||
|
||||
fseek($fp, $pos + $this->_cbrFrameSize);
|
||||
$this->fileObj->seekTo($pos + $this->_cbrFrameSize);
|
||||
|
||||
return isset($this->vbrProperties['frames']) ? $this->vbrProperties['frames'] : null;
|
||||
}
|
||||
|
||||
/**
|
||||
* @param $fp
|
||||
* @param $n
|
||||
*
|
||||
* @return array
|
||||
* @throws \Exception
|
||||
*/
|
||||
private function readBytes($fp, $n) {
|
||||
$raw = fread($fp, $n);
|
||||
if (strlen($raw) !== $n) throw new \Exception('Unexpected end of file!');
|
||||
$bytes = array();
|
||||
for($i = 0; $i < $n; $i++) $bytes[$i] = ord($raw[$i]);
|
||||
return $bytes;
|
||||
}
|
||||
|
||||
/**
|
||||
* Reads id3v1 tag.
|
||||
* @return int Returns length of id3v1 tag.
|
||||
*/
|
||||
private function readId3v1Body($fp) {
|
||||
$this->tags1['song'] = trim(fread($fp, 30));
|
||||
$this->tags1['artist'] = trim(fread($fp, 30));
|
||||
$this->tags1['album'] = trim(fread($fp, 30));
|
||||
$this->tags1['year'] = trim(fread($fp, 4));
|
||||
$this->tags1['comment'] = trim(fread($fp, 28));
|
||||
fseek($fp, 1, SEEK_CUR);
|
||||
$this->tags1['track'] = ord(fread($fp, 1));
|
||||
$this->tags1['genre'] = ord(fread($fp, 1));
|
||||
private function readId3v1Body() {
|
||||
$this->tags1['song'] = trim($this->fileObj->getBytes(30));
|
||||
$this->tags1['artist'] = trim($this->fileObj->getBytes(30));
|
||||
$this->tags1['album'] = trim($this->fileObj->getBytes(30));
|
||||
$this->tags1['year'] = trim($this->fileObj->getBytes(4));
|
||||
$this->tags1['comment'] = trim($this->fileObj->getBytes(28));
|
||||
$this->fileObj->seekForward(1);
|
||||
$this->tags1['track'] = ord($this->fileObj->getBytes(1));
|
||||
$this->tags1['genre'] = ord($this->fileObj->getBytes(1));
|
||||
return 128;
|
||||
}
|
||||
|
||||
@ -512,10 +491,10 @@ class Mp3Info {
|
||||
* @return int Returns length of id3v2 tag.
|
||||
* @throws \Exception
|
||||
*/
|
||||
private function readId3v2Body($fp)
|
||||
private function readId3v2Body()
|
||||
{
|
||||
// read the rest of the id3v2 header
|
||||
$raw = fread($fp, 7);
|
||||
$raw = $this->fileObj->getBytes(7);
|
||||
$data = unpack('cmajor_version/cminor_version/H*', $raw);
|
||||
$this->id3v2MajorVersion = $data['major_version'];
|
||||
$this->id3v2MinorVersion = $data['minor_version'];
|
||||
@ -562,10 +541,10 @@ class Mp3Info {
|
||||
/*throw new \Exception('NEED TO PARSE id3v2.2.0 flags!');*/
|
||||
} else if ($this->id3v2MajorVersion == 3) {
|
||||
// parse id3v2.3.0 body
|
||||
$this->parseId3v23Body($fp, 10 + $size);
|
||||
$this->parseId3v23Body(10 + $size);
|
||||
} else if ($this->id3v2MajorVersion == 4) {
|
||||
// parse id3v2.4.0 body
|
||||
$this->parseId3v24Body($fp, 10 + $size);
|
||||
$this->parseId3v24Body(10 + $size);
|
||||
}
|
||||
|
||||
return 10 + $size; // 10 bytes - header, rest - body
|
||||
@ -575,9 +554,9 @@ class Mp3Info {
|
||||
* Parses id3v2.3.0 tag body.
|
||||
* @todo Complete.
|
||||
*/
|
||||
protected function parseId3v23Body($fp, $lastByte) {
|
||||
while (ftell($fp) < $lastByte) {
|
||||
$raw = fread($fp, 10);
|
||||
protected function parseId3v23Body($lastByte) {
|
||||
while ($this->fileObj->getFilePos() < $lastByte) {
|
||||
$raw = $this->fileObj->getBytes(10);
|
||||
$frame_id = substr($raw, 0, 4);
|
||||
|
||||
if ($frame_id == str_repeat(chr(0), 4)) {
|
||||
@ -643,7 +622,7 @@ class Mp3Info {
|
||||
case 'TSIZ': # Size
|
||||
case 'TSRC': # ISRC (international standard recording code)
|
||||
case 'TSSE': # Software/Hardware and settings used for encoding
|
||||
$this->tags2[$frame_id] = $this->handleTextFrame($frame_size, fread($fp, $frame_size));
|
||||
$this->tags2[$frame_id] = $this->handleTextFrame($frame_size, $this->fileObj->getBytes($frame_size));
|
||||
break;
|
||||
################# Text information frames
|
||||
|
||||
@ -683,15 +662,15 @@ class Mp3Info {
|
||||
// case 'SYLT': # Synchronized lyric/text
|
||||
// break;
|
||||
case 'COMM': # Comments
|
||||
$dataEnd = ftell($fp) + $frame_size;
|
||||
$raw = fread($fp, 4);
|
||||
$dataEnd = $this->fileObj->getFilePos() + $frame_size;
|
||||
$raw = $this->fileObj->getBytes(4);
|
||||
$data = unpack('C1encoding/A3language', $raw);
|
||||
// read until \null character
|
||||
$short_description = '';
|
||||
$last_null = false;
|
||||
$actual_text = false;
|
||||
while (ftell($fp) < $dataEnd) {
|
||||
$char = fgetc($fp);
|
||||
while ($this->fileObj->getFilePos() < $dataEnd) {
|
||||
$char = $this->fileObj->getBytes(1);
|
||||
if ($char == "\00" && $actual_text === false) {
|
||||
if ($data['encoding'] == 0x1) { # two null-bytes for utf-16
|
||||
if ($last_null)
|
||||
@ -721,20 +700,20 @@ class Mp3Info {
|
||||
// break;
|
||||
case 'APIC': # Attached picture
|
||||
$this->hasCover = true;
|
||||
$last_byte = ftell($fp) + $frame_size;
|
||||
$this->coverProperties = ['text_encoding' => ord(fread($fp, 1))];
|
||||
$last_byte = $this->fileObj->getFilePos() + $frame_size;
|
||||
$this->coverProperties = ['text_encoding' => ord($this->fileObj->getBytes(1))];
|
||||
// fseek($fp, $frame_size - 4, SEEK_CUR);
|
||||
$this->coverProperties['mime_type'] = $this->readTextUntilNull($fp, $last_byte);
|
||||
$this->coverProperties['picture_type'] = ord(fread($fp, 1));
|
||||
$this->coverProperties['description'] = $this->readTextUntilNull($fp, $last_byte);
|
||||
$this->coverProperties['offset'] = ftell($fp);
|
||||
$this->coverProperties['size'] = $last_byte - ftell($fp);
|
||||
fseek($fp, $last_byte);
|
||||
$this->coverProperties['mime_type'] = $this->readTextUntilNull($last_byte);
|
||||
$this->coverProperties['picture_type'] = ord($this->fileObj->getBytes(1));
|
||||
$this->coverProperties['description'] = $this->readTextUntilNull($last_byte);
|
||||
$this->coverProperties['offset'] = $this->fileObj->getFilePos();
|
||||
$this->coverProperties['size'] = $last_byte - $this->fileObj->getFilePos();
|
||||
$this->fileObj->seekTo($last_byte);
|
||||
break;
|
||||
// case 'GEOB': # General encapsulated object
|
||||
// break;
|
||||
case 'PCNT': # Play counter
|
||||
$data = unpack('L', fread($fp, $frame_size));
|
||||
$data = unpack('L', $this->fileObj->getBytes($frame_size));
|
||||
$this->tags2[$frame_id] = $data[1];
|
||||
break;
|
||||
// case 'POPM': # Popularimeter
|
||||
@ -760,7 +739,7 @@ class Mp3Info {
|
||||
// case 'PRIV': # Private frame
|
||||
// break;
|
||||
default:
|
||||
fseek($fp, $frame_size, SEEK_CUR);
|
||||
$this->fileObj->seekForward($frame_size);
|
||||
break;
|
||||
}
|
||||
}
|
||||
@ -771,14 +750,14 @@ class Mp3Info {
|
||||
* @param $fp
|
||||
* @param $lastByte
|
||||
*/
|
||||
protected function parseId3v24Body($fp, $lastByte)
|
||||
protected function parseId3v24Body($lastByte)
|
||||
{
|
||||
while (ftell($fp) < $lastByte) {
|
||||
$raw = fread($fp, 10);
|
||||
while ($this->fileObj->getFilePos() < $lastByte) {
|
||||
$raw = $this->fileObj->getBytes(10);
|
||||
$frame_id = substr($raw, 0, 4);
|
||||
|
||||
if ($frame_id == str_repeat(chr(0), 4)) {
|
||||
fseek($fp, $lastByte);
|
||||
$this->fileObj->seekTo($lastByte);
|
||||
break;
|
||||
}
|
||||
|
||||
@ -842,7 +821,7 @@ class Mp3Info {
|
||||
case 'TSIZ': # Size
|
||||
case 'TSRC': # ISRC (international standard recording code)
|
||||
case 'TSSE': # Software/Hardware and settings used for encoding
|
||||
$this->tags2[$frame_id] = $this->handleTextFrame($frame_size, fread($fp, $frame_size));
|
||||
$this->tags2[$frame_id] = $this->handleTextFrame($frame_size, $this->fileObj->getBytes($frame_size));
|
||||
break;
|
||||
|
||||
################# Text information frames
|
||||
@ -883,14 +862,14 @@ class Mp3Info {
|
||||
// case 'SYLT': # Synchronized lyric/text
|
||||
// break;
|
||||
case 'COMM': # Comments
|
||||
$dataEnd = ftell($fp) + $frame_size;
|
||||
$raw = fread($fp, 4);
|
||||
$dataEnd = $this->fileObj->getFilePos() + $frame_size;
|
||||
$raw = $this->fileObj->getBytes(4);
|
||||
$data = unpack('C1encoding/A3language', $raw);
|
||||
// read until \null character
|
||||
$short_description = null;
|
||||
$last_null = false;
|
||||
$actual_text = false;
|
||||
while (ftell($fp) < $dataEnd) {
|
||||
while ($this->fileObj->getFilePos() < $dataEnd) {
|
||||
$char = fgetc($fp);
|
||||
if ($char == "\00" && $actual_text === false) {
|
||||
if ($data['encoding'] == 0x1) { # two null-bytes for utf-16
|
||||
@ -921,20 +900,20 @@ class Mp3Info {
|
||||
// break;
|
||||
case 'APIC': # Attached picture
|
||||
$this->hasCover = true;
|
||||
$last_byte = ftell($fp) + $frame_size;
|
||||
$this->coverProperties = ['text_encoding' => ord(fread($fp, 1))];
|
||||
// fseek($fp, $frame_size - 4, SEEK_CUR);
|
||||
$last_byte = $this->fileObj->getFilePos() + $frame_size;
|
||||
$this->coverProperties = ['text_encoding' => ord($this->fileObj->getBytes(1))];
|
||||
// $this->fileObj->seekForward($frame_size - 4);
|
||||
$this->coverProperties['mime_type'] = $this->readTextUntilNull($fp, $last_byte);
|
||||
$this->coverProperties['picture_type'] = ord(fread($fp, 1));
|
||||
$this->coverProperties['picture_type'] = ord($this->fileObj->getBytes(1));
|
||||
$this->coverProperties['description'] = $this->readTextUntilNull($fp, $last_byte);
|
||||
$this->coverProperties['offset'] = ftell($fp);
|
||||
$this->coverProperties['size'] = $last_byte - ftell($fp);
|
||||
fseek($fp, $last_byte);
|
||||
$this->coverProperties['offset'] = $this->fileObj->getFilePos();
|
||||
$this->coverProperties['size'] = $last_byte - $this->fileObj->getFilePos();
|
||||
$this->fileObj->seekTo($last_byte);
|
||||
break;
|
||||
// case 'GEOB': # General encapsulated object
|
||||
// break;
|
||||
case 'PCNT': # Play counter
|
||||
$data = unpack('L', fread($fp, $frame_size));
|
||||
$data = unpack('L', $this->fileObj->getBytes($frame_size));
|
||||
$this->tags2[$frame_id] = $data[1];
|
||||
break;
|
||||
// case 'POPM': # Popularimeter
|
||||
@ -960,7 +939,7 @@ class Mp3Info {
|
||||
// case 'PRIV': # Private frame
|
||||
// break;
|
||||
default:
|
||||
fseek($fp, $frame_size, SEEK_CUR);
|
||||
$this->fileObj->seekForward($frame_size);
|
||||
break;
|
||||
}
|
||||
}
|
||||
@ -998,11 +977,11 @@ class Mp3Info {
|
||||
* @param int $dataEnd
|
||||
* @return string|null
|
||||
*/
|
||||
private function readTextUntilNull($fp, $dataEnd)
|
||||
private function readTextUntilNull($dataEnd)
|
||||
{
|
||||
$text = null;
|
||||
while (ftell($fp) < $dataEnd) {
|
||||
$char = fgetc($fp);
|
||||
while ($this->fileObj->getFilePos() < $dataEnd) {
|
||||
$char = $this->fileObj->getBytes(1);
|
||||
if ($char === "\00") {
|
||||
return $text;
|
||||
}
|
||||
@ -1060,22 +1039,4 @@ class Mp3Info {
|
||||
) // id3v1 tag
|
||||
;
|
||||
}
|
||||
|
||||
/**
|
||||
* @param string $url
|
||||
* @return int|mixed|string
|
||||
*/
|
||||
public static function getUrlContentLength($url) {
|
||||
$context = stream_context_create(['http' => ['method' => 'HEAD']]);
|
||||
$head = array_change_key_case(get_headers($url, true, $context));
|
||||
// content-length of download (in bytes), read from Content-Length: field
|
||||
$clen = isset($head['content-length']) ? $head['content-length'] : 0;
|
||||
|
||||
// cannot retrieve file size, return "-1"
|
||||
if (!$clen) {
|
||||
return -1;
|
||||
}
|
||||
|
||||
return $clen; // return size in bytes
|
||||
}
|
||||
}
|
||||
|
||||
Loading…
x
Reference in New Issue
Block a user