getid3_riff::parseWAVEFORMATex( string $WaveFormatExData ): array

2075	public static function parseWAVEFORMATex($WaveFormatExData) {2076		// shortcut2077		$WaveFormatEx        = array();2078		$WaveFormatEx['raw'] = array();2079		$WaveFormatEx_raw    = &$WaveFormatEx['raw'];2080 2081		$WaveFormatEx_raw['wFormatTag']      = substr($WaveFormatExData,  0, 2);2082		$WaveFormatEx_raw['nChannels']       = substr($WaveFormatExData,  2, 2);2083		$WaveFormatEx_raw['nSamplesPerSec']  = substr($WaveFormatExData,  4, 4);2084		$WaveFormatEx_raw['nAvgBytesPerSec'] = substr($WaveFormatExData,  8, 4);2085		$WaveFormatEx_raw['nBlockAlign']     = substr($WaveFormatExData, 12, 2);2086		$WaveFormatEx_raw['wBitsPerSample']  = substr($WaveFormatExData, 14, 2);2087		if (strlen($WaveFormatExData) > 16) {2088			$WaveFormatEx_raw['cbSize']      = substr($WaveFormatExData, 16, 2);2089		}2090		$WaveFormatEx_raw = array_map('getid3_lib::LittleEndian2Int', $WaveFormatEx_raw);2091 2092		$WaveFormatEx['codec']           = self::wFormatTagLookup($WaveFormatEx_raw['wFormatTag']);2093		$WaveFormatEx['channels']        = $WaveFormatEx_raw['nChannels'];2094		$WaveFormatEx['sample_rate']     = $WaveFormatEx_raw['nSamplesPerSec'];2095		$WaveFormatEx['bitrate']         = $WaveFormatEx_raw['nAvgBytesPerSec'] * 8;2096		$WaveFormatEx['bits_per_sample'] = $WaveFormatEx_raw['wBitsPerSample'];2097 2098		return $WaveFormatEx;2099	}