Initial commit

1 files changed, 407 insertions, 0 deletions

diff --git a/includes/getid3/module.audio.wavpack.php b/includes/getid3/module.audio.wavpack.php
new file mode 100644
index 0000000..acb0d3e
--- /dev/null
+++ b/includes/getid3/module.audio.wavpack.php
@@ -0,0 +1,407 @@
+<?php
+
+/////////////////////////////////////////////////////////////////
+/// getID3() by James Heinrich <info@getid3.org>               //
+//  available at https://github.com/JamesHeinrich/getID3       //
+//            or https://www.getid3.org                        //
+//            or http://getid3.sourceforge.net                 //
+//  see readme.txt for more details                            //
+/////////////////////////////////////////////////////////////////
+//                                                             //
+// module.audio.wavpack.php                                    //
+// module for analyzing WavPack v4.0+ Audio files              //
+// dependencies: NONE                                          //
+//                                                            ///
+/////////////////////////////////////////////////////////////////
+
+if (!defined('GETID3_INCLUDEPATH')) { // prevent path-exposing attacks that access modules directly on public webservers
+	exit;
+}
+class getid3_wavpack extends getid3_handler
+{
+	/**
+	 * @return bool
+	 */
+	public function Analyze() {
+		$info = &$this->getid3->info;
+
+		$this->fseek($info['avdataoffset']);
+
+		while (true) {
+
+			$wavpackheader = $this->fread(32);
+
+			if ($this->ftell() >= $info['avdataend']) {
+				break;
+			} elseif (feof($this->getid3->fp)) {
+				break;
+			} elseif (
+				isset($info['wavpack']['blockheader']['total_samples']) &&
+				isset($info['wavpack']['blockheader']['block_samples']) &&
+				($info['wavpack']['blockheader']['total_samples'] > 0) &&
+				($info['wavpack']['blockheader']['block_samples'] > 0) &&
+				(!isset($info['wavpack']['riff_trailer_size']) || ($info['wavpack']['riff_trailer_size'] <= 0)) &&
+				((isset($info['wavpack']['config_flags']['md5_checksum']) && ($info['wavpack']['config_flags']['md5_checksum'] === false)) || !empty($info['md5_data_source']))) {
+					break;
+			}
+
+			$blockheader_offset = $this->ftell() - 32;
+			$blockheader_magic  =                              substr($wavpackheader,  0,  4);
+			$blockheader_size   = getid3_lib::LittleEndian2Int(substr($wavpackheader,  4,  4));
+
+			$magic = 'wvpk';
+			if ($blockheader_magic != $magic) {
+				$this->error('Expecting "'.getid3_lib::PrintHexBytes($magic).'" at offset '.$blockheader_offset.', found "'.getid3_lib::PrintHexBytes($blockheader_magic).'"');
+				switch (isset($info['audio']['dataformat']) ? $info['audio']['dataformat'] : '') {
+					case 'wavpack':
+					case 'wvc':
+						break;
+					default:
+						unset($info['fileformat']);
+						unset($info['audio']);
+						unset($info['wavpack']);
+						break;
+				}
+				return false;
+			}
+
+			if (empty($info['wavpack']['blockheader']['block_samples']) ||
+				empty($info['wavpack']['blockheader']['total_samples']) ||
+				($info['wavpack']['blockheader']['block_samples'] <= 0) ||
+				($info['wavpack']['blockheader']['total_samples'] <= 0)) {
+				// Also, it is possible that the first block might not have
+				// any samples (block_samples == 0) and in this case you should skip blocks
+				// until you find one with samples because the other information (like
+				// total_samples) are not guaranteed to be correct until (block_samples > 0)
+
+				// Finally, I have defined a format for files in which the length is not known
+				// (for example when raw files are created using pipes). In these cases
+				// total_samples will be -1 and you must seek to the final block to determine
+				// the total number of samples.
+
+
+				$info['audio']['dataformat']   = 'wavpack';
+				$info['fileformat']            = 'wavpack';
+				$info['audio']['lossless']     = true;
+				$info['audio']['bitrate_mode'] = 'vbr';
+
+				$info['wavpack']['blockheader']['offset'] = $blockheader_offset;
+				$info['wavpack']['blockheader']['magic']  = $blockheader_magic;
+				$info['wavpack']['blockheader']['size']   = $blockheader_size;
+
+				if ($info['wavpack']['blockheader']['size'] >= 0x100000) {
+					$this->error('Expecting WavPack block size less than "0x100000", found "'.$info['wavpack']['blockheader']['size'].'" at offset '.$info['wavpack']['blockheader']['offset']);
+					switch (isset($info['audio']['dataformat']) ? $info['audio']['dataformat'] : '') {
+						case 'wavpack':
+						case 'wvc':
+							break;
+						default:
+							unset($info['fileformat']);
+							unset($info['audio']);
+							unset($info['wavpack']);
+							break;
+					}
+					return false;
+				}
+
+				$info['wavpack']['blockheader']['minor_version'] = ord($wavpackheader[8]);
+				$info['wavpack']['blockheader']['major_version'] = ord($wavpackheader[9]);
+
+				if (($info['wavpack']['blockheader']['major_version'] != 4) ||
+					(($info['wavpack']['blockheader']['minor_version'] < 4) &&
+					($info['wavpack']['blockheader']['minor_version'] > 16))) {
+						$this->error('Expecting WavPack version between "4.2" and "4.16", found version "'.$info['wavpack']['blockheader']['major_version'].'.'.$info['wavpack']['blockheader']['minor_version'].'" at offset '.$info['wavpack']['blockheader']['offset']);
+						switch (isset($info['audio']['dataformat']) ? $info['audio']['dataformat'] : '') {
+							case 'wavpack':
+							case 'wvc':
+								break;
+							default:
+								unset($info['fileformat']);
+								unset($info['audio']);
+								unset($info['wavpack']);
+								break;
+						}
+						return false;
+				}
+
+				$info['wavpack']['blockheader']['track_number']  = ord($wavpackheader[10]); // unused
+				$info['wavpack']['blockheader']['index_number']  = ord($wavpackheader[11]); // unused
+				$info['wavpack']['blockheader']['total_samples'] = getid3_lib::LittleEndian2Int(substr($wavpackheader, 12,  4));
+				$info['wavpack']['blockheader']['block_index']   = getid3_lib::LittleEndian2Int(substr($wavpackheader, 16,  4));
+				$info['wavpack']['blockheader']['block_samples'] = getid3_lib::LittleEndian2Int(substr($wavpackheader, 20,  4));
+				$info['wavpack']['blockheader']['flags_raw']     = getid3_lib::LittleEndian2Int(substr($wavpackheader, 24,  4));
+				$info['wavpack']['blockheader']['crc']           = getid3_lib::LittleEndian2Int(substr($wavpackheader, 28,  4));
+
+				$info['wavpack']['blockheader']['flags']['bytes_per_sample']     =    1 + ($info['wavpack']['blockheader']['flags_raw'] & 0x00000003);
+				$info['wavpack']['blockheader']['flags']['mono']                 = (bool) ($info['wavpack']['blockheader']['flags_raw'] & 0x00000004);
+				$info['wavpack']['blockheader']['flags']['hybrid']               = (bool) ($info['wavpack']['blockheader']['flags_raw'] & 0x00000008);
+				$info['wavpack']['blockheader']['flags']['joint_stereo']         = (bool) ($info['wavpack']['blockheader']['flags_raw'] & 0x00000010);
+				$info['wavpack']['blockheader']['flags']['cross_decorrelation']  = (bool) ($info['wavpack']['blockheader']['flags_raw'] & 0x00000020);
+				$info['wavpack']['blockheader']['flags']['hybrid_noiseshape']    = (bool) ($info['wavpack']['blockheader']['flags_raw'] & 0x00000040);
+				$info['wavpack']['blockheader']['flags']['ieee_32bit_float']     = (bool) ($info['wavpack']['blockheader']['flags_raw'] & 0x00000080);
+				$info['wavpack']['blockheader']['flags']['int_32bit']            = (bool) ($info['wavpack']['blockheader']['flags_raw'] & 0x00000100);
+				$info['wavpack']['blockheader']['flags']['hybrid_bitrate_noise'] = (bool) ($info['wavpack']['blockheader']['flags_raw'] & 0x00000200);
+				$info['wavpack']['blockheader']['flags']['hybrid_balance_noise'] = (bool) ($info['wavpack']['blockheader']['flags_raw'] & 0x00000400);
+				$info['wavpack']['blockheader']['flags']['multichannel_initial'] = (bool) ($info['wavpack']['blockheader']['flags_raw'] & 0x00000800);
+				$info['wavpack']['blockheader']['flags']['multichannel_final']   = (bool) ($info['wavpack']['blockheader']['flags_raw'] & 0x00001000);
+
+				$info['audio']['lossless'] = !$info['wavpack']['blockheader']['flags']['hybrid'];
+			}
+
+			while (!feof($this->getid3->fp) && ($this->ftell() < ($blockheader_offset + $blockheader_size + 8))) {
+
+				$metablock = array('offset'=>$this->ftell());
+				$metablockheader = $this->fread(2);
+				if (feof($this->getid3->fp)) {
+					break;
+				}
+				$metablock['id'] = ord($metablockheader[0]);
+				$metablock['function_id'] = ($metablock['id'] & 0x3F);
+				$metablock['function_name'] = $this->WavPackMetablockNameLookup($metablock['function_id']);
+
+				// The 0x20 bit in the id of the meta subblocks (which is defined as
+				// ID_OPTIONAL_DATA) is a permanent part of the id. The idea is that
+				// if a decoder encounters an id that it does not know about, it uses
+				// that "ID_OPTIONAL_DATA" flag to determine what to do. If it is set
+				// then the decoder simply ignores the metadata, but if it is zero
+				// then the decoder should quit because it means that an understanding
+				// of the metadata is required to correctly decode the audio.
+				$metablock['non_decoder'] = (bool) ($metablock['id'] & 0x20);
+
+				$metablock['padded_data'] = (bool) ($metablock['id'] & 0x40);
+				$metablock['large_block'] = (bool) ($metablock['id'] & 0x80);
+				if ($metablock['large_block']) {
+					$metablockheader .= $this->fread(2);
+				}
+				$metablock['size'] = getid3_lib::LittleEndian2Int(substr($metablockheader, 1)) * 2; // size is stored in words
+				$metablock['data'] = null;
+				$metablock['comments'] = array();
+
+				if ($metablock['size'] > 0) {
+
+					switch ($metablock['function_id']) {
+						case 0x21: // ID_RIFF_HEADER
+						case 0x22: // ID_RIFF_TRAILER
+						case 0x23: // ID_REPLAY_GAIN
+						case 0x24: // ID_CUESHEET
+						case 0x25: // ID_CONFIG_BLOCK
+						case 0x26: // ID_MD5_CHECKSUM
+							$metablock['data'] = $this->fread($metablock['size']);
+
+							if ($metablock['padded_data']) {
+								// padded to the nearest even byte
+								$metablock['size']--;
+								$metablock['data'] = substr($metablock['data'], 0, -1);
+							}
+							break;
+
+						case 0x00: // ID_DUMMY
+						case 0x01: // ID_ENCODER_INFO
+						case 0x02: // ID_DECORR_TERMS
+						case 0x03: // ID_DECORR_WEIGHTS
+						case 0x04: // ID_DECORR_SAMPLES
+						case 0x05: // ID_ENTROPY_VARS
+						case 0x06: // ID_HYBRID_PROFILE
+						case 0x07: // ID_SHAPING_WEIGHTS
+						case 0x08: // ID_FLOAT_INFO
+						case 0x09: // ID_INT32_INFO
+						case 0x0A: // ID_WV_BITSTREAM
+						case 0x0B: // ID_WVC_BITSTREAM
+						case 0x0C: // ID_WVX_BITSTREAM
+						case 0x0D: // ID_CHANNEL_INFO
+							$this->fseek($metablock['offset'] + ($metablock['large_block'] ? 4 : 2) + $metablock['size']);
+							break;
+
+						default:
+							$this->warning('Unexpected metablock type "0x'.str_pad(dechex($metablock['function_id']), 2, '0', STR_PAD_LEFT).'" at offset '.$metablock['offset']);
+							$this->fseek($metablock['offset'] + ($metablock['large_block'] ? 4 : 2) + $metablock['size']);
+							break;
+					}
+
+					switch ($metablock['function_id']) {
+						case 0x21: // ID_RIFF_HEADER
+							getid3_lib::IncludeDependency(GETID3_INCLUDEPATH.'module.audio-video.riff.php', __FILE__, true);
+							$original_wav_filesize = getid3_lib::LittleEndian2Int(substr($metablock['data'], 4, 4));
+
+							$getid3_temp = new getID3();
+							$getid3_temp->openfile($this->getid3->filename, $this->getid3->info['filesize'], $this->getid3->fp);
+							$getid3_riff = new getid3_riff($getid3_temp);
+							$getid3_riff->ParseRIFFdata($metablock['data']);
+							$metablock['riff']            = $getid3_temp->info['riff'];
+							$info['audio']['sample_rate'] = $getid3_temp->info['riff']['raw']['fmt ']['nSamplesPerSec'];
+							unset($getid3_riff, $getid3_temp);
+
+							$metablock['riff']['original_filesize'] = $original_wav_filesize;
+							$info['wavpack']['riff_trailer_size'] = $original_wav_filesize - $metablock['riff']['WAVE']['data'][0]['size'] - $metablock['riff']['header_size'];
+							$info['playtime_seconds'] = $info['wavpack']['blockheader']['total_samples'] / $info['audio']['sample_rate'];
+
+							// Safe RIFF header in case there's a RIFF footer later
+							$metablockRIFFheader = $metablock['data'];
+							break;
+
+
+						case 0x22: // ID_RIFF_TRAILER
+							$metablockRIFFfooter = isset($metablockRIFFheader) ? $metablockRIFFheader : ''.$metablock['data'];
+							getid3_lib::IncludeDependency(GETID3_INCLUDEPATH.'module.audio-video.riff.php', __FILE__, true);
+
+							$startoffset = $metablock['offset'] + ($metablock['large_block'] ? 4 : 2);
+							$getid3_temp = new getID3();
+							$getid3_temp->openfile($this->getid3->filename, $this->getid3->info['filesize'], $this->getid3->fp);
+							$getid3_temp->info['avdataend']  = $info['avdataend'];
+							//$getid3_temp->info['fileformat'] = 'riff';
+							$getid3_riff = new getid3_riff($getid3_temp);
+							$metablock['riff'] = $getid3_riff->ParseRIFF($startoffset, $startoffset + $metablock['size']);
+
+							if (!empty($metablock['riff']['INFO'])) {
+								getid3_riff::parseComments($metablock['riff']['INFO'], $metablock['comments']);
+								$info['tags']['riff'] = $metablock['comments'];
+							}
+							unset($getid3_temp, $getid3_riff);
+							break;
+
+
+						case 0x23: // ID_REPLAY_GAIN
+							$this->warning('WavPack "Replay Gain" contents not yet handled by getID3() in metablock at offset '.$metablock['offset']);
+							break;
+
+
+						case 0x24: // ID_CUESHEET
+							$this->warning('WavPack "Cuesheet" contents not yet handled by getID3() in metablock at offset '.$metablock['offset']);
+							break;
+
+
+						case 0x25: // ID_CONFIG_BLOCK
+							$metablock['flags_raw'] = getid3_lib::LittleEndian2Int(substr($metablock['data'], 0, 3));
+
+							$metablock['flags']['adobe_mode']     = (bool) ($metablock['flags_raw'] & 0x000001); // "adobe" mode for 32-bit floats
+							$metablock['flags']['fast_flag']      = (bool) ($metablock['flags_raw'] & 0x000002); // fast mode
+							$metablock['flags']['very_fast_flag'] = (bool) ($metablock['flags_raw'] & 0x000004); // double fast
+							$metablock['flags']['high_flag']      = (bool) ($metablock['flags_raw'] & 0x000008); // high quality mode
+							$metablock['flags']['very_high_flag'] = (bool) ($metablock['flags_raw'] & 0x000010); // double high (not used yet)
+							$metablock['flags']['bitrate_kbps']   = (bool) ($metablock['flags_raw'] & 0x000020); // bitrate is kbps, not bits / sample
+							$metablock['flags']['auto_shaping']   = (bool) ($metablock['flags_raw'] & 0x000040); // automatic noise shaping
+							$metablock['flags']['shape_override'] = (bool) ($metablock['flags_raw'] & 0x000080); // shaping mode specified
+							$metablock['flags']['joint_override'] = (bool) ($metablock['flags_raw'] & 0x000100); // joint-stereo mode specified
+							$metablock['flags']['copy_time']      = (bool) ($metablock['flags_raw'] & 0x000200); // copy file-time from source
+							$metablock['flags']['create_exe']     = (bool) ($metablock['flags_raw'] & 0x000400); // create executable
+							$metablock['flags']['create_wvc']     = (bool) ($metablock['flags_raw'] & 0x000800); // create correction file
+							$metablock['flags']['optimize_wvc']   = (bool) ($metablock['flags_raw'] & 0x001000); // maximize bybrid compression
+							$metablock['flags']['quality_mode']   = (bool) ($metablock['flags_raw'] & 0x002000); // psychoacoustic quality mode
+							$metablock['flags']['raw_flag']       = (bool) ($metablock['flags_raw'] & 0x004000); // raw mode (not implemented yet)
+							$metablock['flags']['calc_noise']     = (bool) ($metablock['flags_raw'] & 0x008000); // calc noise in hybrid mode
+							$metablock['flags']['lossy_mode']     = (bool) ($metablock['flags_raw'] & 0x010000); // obsolete (for information)
+							$metablock['flags']['extra_mode']     = (bool) ($metablock['flags_raw'] & 0x020000); // extra processing mode
+							$metablock['flags']['skip_wvx']       = (bool) ($metablock['flags_raw'] & 0x040000); // no wvx stream w/ floats & big ints
+							$metablock['flags']['md5_checksum']   = (bool) ($metablock['flags_raw'] & 0x080000); // compute & store MD5 signature
+							$metablock['flags']['quiet_mode']     = (bool) ($metablock['flags_raw'] & 0x100000); // don't report progress %
+
+							$info['wavpack']['config_flags'] = $metablock['flags'];
+
+
+							$info['audio']['encoder_options'] = '';
+							if ($info['wavpack']['blockheader']['flags']['hybrid']) {
+								$info['audio']['encoder_options'] .= ' -b???';
+							}
+							$info['audio']['encoder_options'] .= ($metablock['flags']['adobe_mode']     ? ' -a' : '');
+							$info['audio']['encoder_options'] .= ($metablock['flags']['optimize_wvc']   ? ' -cc' : '');
+							$info['audio']['encoder_options'] .= ($metablock['flags']['create_exe']     ? ' -e' : '');
+							$info['audio']['encoder_options'] .= ($metablock['flags']['fast_flag']      ? ' -f' : '');
+							$info['audio']['encoder_options'] .= ($metablock['flags']['joint_override'] ? ' -j?' : '');
+							$info['audio']['encoder_options'] .= ($metablock['flags']['high_flag']      ? ' -h' : '');
+							$info['audio']['encoder_options'] .= ($metablock['flags']['md5_checksum']   ? ' -m' : '');
+							$info['audio']['encoder_options'] .= ($metablock['flags']['calc_noise']     ? ' -n' : '');
+							$info['audio']['encoder_options'] .= ($metablock['flags']['shape_override'] ? ' -s?' : '');
+							$info['audio']['encoder_options'] .= ($metablock['flags']['extra_mode']     ? ' -x?' : '');
+							if (!empty($info['audio']['encoder_options'])) {
+								$info['audio']['encoder_options'] = trim($info['audio']['encoder_options']);
+							} elseif (isset($info['audio']['encoder_options'])) {
+								unset($info['audio']['encoder_options']);
+							}
+							break;
+
+
+						case 0x26: // ID_MD5_CHECKSUM
+							if (strlen($metablock['data']) == 16) {
+								$info['md5_data_source'] = strtolower(getid3_lib::PrintHexBytes($metablock['data'], true, false, false));
+							} else {
+								$this->warning('Expecting 16 bytes of WavPack "MD5 Checksum" in metablock at offset '.$metablock['offset'].', but found '.strlen($metablock['data']).' bytes');
+							}
+							break;
+
+
+						case 0x00: // ID_DUMMY
+						case 0x01: // ID_ENCODER_INFO
+						case 0x02: // ID_DECORR_TERMS
+						case 0x03: // ID_DECORR_WEIGHTS
+						case 0x04: // ID_DECORR_SAMPLES
+						case 0x05: // ID_ENTROPY_VARS
+						case 0x06: // ID_HYBRID_PROFILE
+						case 0x07: // ID_SHAPING_WEIGHTS
+						case 0x08: // ID_FLOAT_INFO
+						case 0x09: // ID_INT32_INFO
+						case 0x0A: // ID_WV_BITSTREAM
+						case 0x0B: // ID_WVC_BITSTREAM
+						case 0x0C: // ID_WVX_BITSTREAM
+						case 0x0D: // ID_CHANNEL_INFO
+							unset($metablock);
+							break;
+					}
+
+				}
+				if (!empty($metablock)) {
+					$info['wavpack']['metablocks'][] = $metablock;
+				}
+
+			}
+
+		}
+
+		$info['audio']['encoder']         = 'WavPack v'.$info['wavpack']['blockheader']['major_version'].'.'.str_pad($info['wavpack']['blockheader']['minor_version'], 2, '0', STR_PAD_LEFT);
+		$info['audio']['bits_per_sample'] = $info['wavpack']['blockheader']['flags']['bytes_per_sample'] * 8;
+		$info['audio']['channels']        = ($info['wavpack']['blockheader']['flags']['mono'] ? 1 : 2);
+
+		if (!empty($info['playtime_seconds'])) {
+
+			$info['audio']['bitrate']     = (($info['avdataend'] - $info['avdataoffset']) * 8) / $info['playtime_seconds'];
+
+		} else {
+
+			$info['audio']['dataformat']  = 'wvc';
+
+		}
+
+		return true;
+	}
+
+	/**
+	 * @param int $id
+	 *
+	 * @return string
+	 */
+	public function WavPackMetablockNameLookup(&$id) {
+		static $WavPackMetablockNameLookup = array(
+			0x00 => 'Dummy',
+			0x01 => 'Encoder Info',
+			0x02 => 'Decorrelation Terms',
+			0x03 => 'Decorrelation Weights',
+			0x04 => 'Decorrelation Samples',
+			0x05 => 'Entropy Variables',
+			0x06 => 'Hybrid Profile',
+			0x07 => 'Shaping Weights',
+			0x08 => 'Float Info',
+			0x09 => 'Int32 Info',
+			0x0A => 'WV Bitstream',
+			0x0B => 'WVC Bitstream',
+			0x0C => 'WVX Bitstream',
+			0x0D => 'Channel Info',
+			0x21 => 'RIFF header',
+			0x22 => 'RIFF trailer',
+			0x23 => 'Replay Gain',
+			0x24 => 'Cuesheet',
+			0x25 => 'Config Block',
+			0x26 => 'MD5 Checksum',
+		);
+		return (isset($WavPackMetablockNameLookup[$id]) ? $WavPackMetablockNameLookup[$id] : '');
+	}
+
+}