<?php

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/////////////////////////////////////////////////////////////////

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/// getID3() by James Heinrich <info@getid3.org> //

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// available at https://github.com/JamesHeinrich/getID3 //

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// or https://www.getid3.org //

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// or http://getid3.sourceforge.net //

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// see readme.txt for more details //

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/////////////////////////////////////////////////////////////////

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// //

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// module.audio.ogg.php //

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// module for analyzing Ogg Vorbis, OggFLAC and Speex files //

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// dependencies: module.audio.flac.php //

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// ///

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/////////////////////////////////////////////////////////////////

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if (!defined('GETID3_INCLUDEPATH')) { // prevent path-exposing attacks that access modules directly on public webservers

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exit;

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}

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getid3_lib::IncludeDependency(GETID3_INCLUDEPATH.'module.audio.flac.php', __FILE__, true);

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class getid3_ogg extends getid3_handler

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{

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/**

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* @link http://xiph.org/vorbis/doc/Vorbis_I_spec.html

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*

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* @return bool

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*/

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public function Analyze() {

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$info = &$this->getid3->info;

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$info['fileformat'] = 'ogg';

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// Warn about illegal tags - only vorbiscomments are allowed

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if (isset($info['id3v2'])) {

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$this->warning('Illegal ID3v2 tag present.');

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}

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if (isset($info['id3v1'])) {

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$this->warning('Illegal ID3v1 tag present.');

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}

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if (isset($info['ape'])) {

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$this->warning('Illegal APE tag present.');

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}

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// Page 1 - Stream Header

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$this->fseek($info['avdataoffset']);

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$oggpageinfo = $this->ParseOggPageHeader();

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$info['ogg']['pageheader'][$oggpageinfo['page_seqno']] = $oggpageinfo;

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if ($this->ftell() >= $this->getid3->fread_buffer_size()) {

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$this->error('Could not find start of Ogg page in the first '.$this->getid3->fread_buffer_size().' bytes (this might not be an Ogg-Vorbis file?)');

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unset($info['fileformat']);

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unset($info['ogg']);

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return false;

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}

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$filedata = $this->fread($oggpageinfo['page_length']);

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$filedataoffset = 0;

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if (substr($filedata, 0, 4) == 'fLaC') {

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$info['audio']['dataformat'] = 'flac';

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$info['audio']['bitrate_mode'] = 'vbr';

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$info['audio']['lossless'] = true;

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} elseif (substr($filedata, 1, 6) == 'vorbis') {

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$this->ParseVorbisPageHeader($filedata, $filedataoffset, $oggpageinfo);

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} elseif (substr($filedata, 0, 8) == 'OpusHead') {

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if ($this->ParseOpusPageHeader($filedata, $filedataoffset, $oggpageinfo) === false) {

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return false;

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}

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} elseif (substr($filedata, 0, 8) == 'Speex ') {

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// http://www.speex.org/manual/node10.html

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$info['audio']['dataformat'] = 'speex';

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$info['mime_type'] = 'audio/speex';

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$info['audio']['bitrate_mode'] = 'abr';

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$info['audio']['lossless'] = false;

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$info['ogg']['pageheader'][$oggpageinfo['page_seqno']]['speex_string'] = substr($filedata, $filedataoffset, 8); // hard-coded to 'Speex '

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$filedataoffset += 8;

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$info['ogg']['pageheader'][$oggpageinfo['page_seqno']]['speex_version'] = substr($filedata, $filedataoffset, 20);

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$filedataoffset += 20;

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$info['ogg']['pageheader'][$oggpageinfo['page_seqno']]['speex_version_id'] = getid3_lib::LittleEndian2Int(substr($filedata, $filedataoffset, 4));

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$filedataoffset += 4;

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$info['ogg']['pageheader'][$oggpageinfo['page_seqno']]['header_size'] = getid3_lib::LittleEndian2Int(substr($filedata, $filedataoffset, 4));

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$filedataoffset += 4;

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$info['ogg']['pageheader'][$oggpageinfo['page_seqno']]['rate'] = getid3_lib::LittleEndian2Int(substr($filedata, $filedataoffset, 4));

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$filedataoffset += 4;

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$info['ogg']['pageheader'][$oggpageinfo['page_seqno']]['mode'] = getid3_lib::LittleEndian2Int(substr($filedata, $filedataoffset, 4));

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$filedataoffset += 4;

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$info['ogg']['pageheader'][$oggpageinfo['page_seqno']]['mode_bitstream_version'] = getid3_lib::LittleEndian2Int(substr($filedata, $filedataoffset, 4));

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$filedataoffset += 4;

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$info['ogg']['pageheader'][$oggpageinfo['page_seqno']]['nb_channels'] = getid3_lib::LittleEndian2Int(substr($filedata, $filedataoffset, 4));

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$filedataoffset += 4;

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$info['ogg']['pageheader'][$oggpageinfo['page_seqno']]['bitrate'] = getid3_lib::LittleEndian2Int(substr($filedata, $filedataoffset, 4));

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$filedataoffset += 4;

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$info['ogg']['pageheader'][$oggpageinfo['page_seqno']]['framesize'] = getid3_lib::LittleEndian2Int(substr($filedata, $filedataoffset, 4));

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$filedataoffset += 4;

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$info['ogg']['pageheader'][$oggpageinfo['page_seqno']]['vbr'] = getid3_lib::LittleEndian2Int(substr($filedata, $filedataoffset, 4));

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$filedataoffset += 4;

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$info['ogg']['pageheader'][$oggpageinfo['page_seqno']]['frames_per_packet'] = getid3_lib::LittleEndian2Int(substr($filedata, $filedataoffset, 4));

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$filedataoffset += 4;

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$info['ogg']['pageheader'][$oggpageinfo['page_seqno']]['extra_headers'] = getid3_lib::LittleEndian2Int(substr($filedata, $filedataoffset, 4));

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$filedataoffset += 4;

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$info['ogg']['pageheader'][$oggpageinfo['page_seqno']]['reserved1'] = getid3_lib::LittleEndian2Int(substr($filedata, $filedataoffset, 4));

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$filedataoffset += 4;

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$info['ogg']['pageheader'][$oggpageinfo['page_seqno']]['reserved2'] = getid3_lib::LittleEndian2Int(substr($filedata, $filedataoffset, 4));

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$filedataoffset += 4;

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$info['speex']['speex_version'] = trim($info['ogg']['pageheader'][$oggpageinfo['page_seqno']]['speex_version']);

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$info['speex']['sample_rate'] = $info['ogg']['pageheader'][$oggpageinfo['page_seqno']]['rate'];

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$info['speex']['channels'] = $info['ogg']['pageheader'][$oggpageinfo['page_seqno']]['nb_channels'];

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$info['speex']['vbr'] = (bool) $info['ogg']['pageheader'][$oggpageinfo['page_seqno']]['vbr'];

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$info['speex']['band_type'] = $this->SpeexBandModeLookup($info['ogg']['pageheader'][$oggpageinfo['page_seqno']]['mode']);

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$info['audio']['sample_rate'] = $info['speex']['sample_rate'];

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$info['audio']['channels'] = $info['speex']['channels'];

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if ($info['speex']['vbr']) {

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$info['audio']['bitrate_mode'] = 'vbr';

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}

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} elseif (substr($filedata, 0, 7) == "\x80".'theora') {

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// http://www.theora.org/doc/Theora.pdf (section 6.2)

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$info['ogg']['pageheader']['theora']['theora_magic'] = substr($filedata, $filedataoffset, 7); // hard-coded to "\x80.'theora'

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$filedataoffset += 7;

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$info['ogg']['pageheader']['theora']['version_major'] = getid3_lib::BigEndian2Int(substr($filedata, $filedataoffset, 1));

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$filedataoffset += 1;

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$info['ogg']['pageheader']['theora']['version_minor'] = getid3_lib::BigEndian2Int(substr($filedata, $filedataoffset, 1));

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$filedataoffset += 1;

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$info['ogg']['pageheader']['theora']['version_revision'] = getid3_lib::BigEndian2Int(substr($filedata, $filedataoffset, 1));

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$filedataoffset += 1;

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$info['ogg']['pageheader']['theora']['frame_width_macroblocks'] = getid3_lib::BigEndian2Int(substr($filedata, $filedataoffset, 2));

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$filedataoffset += 2;

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$info['ogg']['pageheader']['theora']['frame_height_macroblocks'] = getid3_lib::BigEndian2Int(substr($filedata, $filedataoffset, 2));

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$filedataoffset += 2;

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$info['ogg']['pageheader']['theora']['resolution_x'] = getid3_lib::BigEndian2Int(substr($filedata, $filedataoffset, 3));

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$filedataoffset += 3;

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$info['ogg']['pageheader']['theora']['resolution_y'] = getid3_lib::BigEndian2Int(substr($filedata, $filedataoffset, 3));

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$filedataoffset += 3;

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$info['ogg']['pageheader']['theora']['picture_offset_x'] = getid3_lib::BigEndian2Int(substr($filedata, $filedataoffset, 1));

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$filedataoffset += 1;

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$info['ogg']['pageheader']['theora']['picture_offset_y'] = getid3_lib::BigEndian2Int(substr($filedata, $filedataoffset, 1));

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$filedataoffset += 1;

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$info['ogg']['pageheader']['theora']['frame_rate_numerator'] = getid3_lib::BigEndian2Int(substr($filedata, $filedataoffset, 4));

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$filedataoffset += 4;

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$info['ogg']['pageheader']['theora']['frame_rate_denominator'] = getid3_lib::BigEndian2Int(substr($filedata, $filedataoffset, 4));

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$filedataoffset += 4;

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$info['ogg']['pageheader']['theora']['pixel_aspect_numerator'] = getid3_lib::BigEndian2Int(substr($filedata, $filedataoffset, 3));

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$filedataoffset += 3;

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$info['ogg']['pageheader']['theora']['pixel_aspect_denominator'] = getid3_lib::BigEndian2Int(substr($filedata, $filedataoffset, 3));

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$filedataoffset += 3;

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$info['ogg']['pageheader']['theora']['color_space_id'] = getid3_lib::BigEndian2Int(substr($filedata, $filedataoffset, 1));

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$filedataoffset += 1;

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$info['ogg']['pageheader']['theora']['nominal_bitrate'] = getid3_lib::BigEndian2Int(substr($filedata, $filedataoffset, 3));

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$filedataoffset += 3;

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$info['ogg']['pageheader']['theora']['flags'] = getid3_lib::BigEndian2Int(substr($filedata, $filedataoffset, 2));

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$filedataoffset += 2;

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$info['ogg']['pageheader']['theora']['quality'] = ($info['ogg']['pageheader']['theora']['flags'] & 0xFC00) >> 10;

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$info['ogg']['pageheader']['theora']['kfg_shift'] = ($info['ogg']['pageheader']['theora']['flags'] & 0x03E0) >> 5;

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$info['ogg']['pageheader']['theora']['pixel_format_id'] = ($info['ogg']['pageheader']['theora']['flags'] & 0x0018) >> 3;

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$info['ogg']['pageheader']['theora']['reserved'] = ($info['ogg']['pageheader']['theora']['flags'] & 0x0007) >> 0; // should be 0

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$info['ogg']['pageheader']['theora']['color_space'] = self::TheoraColorSpace($info['ogg']['pageheader']['theora']['color_space_id']);

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$info['ogg']['pageheader']['theora']['pixel_format'] = self::TheoraPixelFormat($info['ogg']['pageheader']['theora']['pixel_format_id']);

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$info['video']['dataformat'] = 'theora';

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$info['mime_type'] = 'video/ogg';

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//$info['audio']['bitrate_mode'] = 'abr';

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//$info['audio']['lossless'] = false;

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$info['video']['resolution_x'] = $info['ogg']['pageheader']['theora']['resolution_x'];

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$info['video']['resolution_y'] = $info['ogg']['pageheader']['theora']['resolution_y'];

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if ($info['ogg']['pageheader']['theora']['frame_rate_denominator'] > 0) {

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$info['video']['frame_rate'] = (float) $info['ogg']['pageheader']['theora']['frame_rate_numerator'] / $info['ogg']['pageheader']['theora']['frame_rate_denominator'];

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}

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if ($info['ogg']['pageheader']['theora']['pixel_aspect_denominator'] > 0) {

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$info['video']['pixel_aspect_ratio'] = (float) $info['ogg']['pageheader']['theora']['pixel_aspect_numerator'] / $info['ogg']['pageheader']['theora']['pixel_aspect_denominator'];

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}

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$this->warning('Ogg Theora (v3) not fully supported in this version of getID3 ['.$this->getid3->version().'] -- bitrate, playtime and all audio data are currently unavailable');

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} elseif (substr($filedata, 0, 8) == "fishead\x00") {

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// Ogg Skeleton version 3.0 Format Specification

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// http://xiph.org/ogg/doc/skeleton.html

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$filedataoffset += 8;

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$info['ogg']['skeleton']['fishead']['raw']['version_major'] = getid3_lib::LittleEndian2Int(substr($filedata, $filedataoffset, 2));

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$filedataoffset += 2;

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$info['ogg']['skeleton']['fishead']['raw']['version_minor'] = getid3_lib::LittleEndian2Int(substr($filedata, $filedataoffset, 2));

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$filedataoffset += 2;

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$info['ogg']['skeleton']['fishead']['raw']['presentationtime_numerator'] = getid3_lib::LittleEndian2Int(substr($filedata, $filedataoffset, 8));

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$filedataoffset += 8;

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$info['ogg']['skeleton']['fishead']['raw']['presentationtime_denominator'] = getid3_lib::LittleEndian2Int(substr($filedata, $filedataoffset, 8));

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$filedataoffset += 8;

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$info['ogg']['skeleton']['fishead']['raw']['basetime_numerator'] = getid3_lib::LittleEndian2Int(substr($filedata, $filedataoffset, 8));

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$filedataoffset += 8;

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$info['ogg']['skeleton']['fishead']['raw']['basetime_denominator'] = getid3_lib::LittleEndian2Int(substr($filedata, $filedataoffset, 8));

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$filedataoffset += 8;

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$info['ogg']['skeleton']['fishead']['raw']['utc'] = getid3_lib::LittleEndian2Int(substr($filedata, $filedataoffset, 20));

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$filedataoffset += 20;

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$info['ogg']['skeleton']['fishead']['version'] = $info['ogg']['skeleton']['fishead']['raw']['version_major'].'.'.$info['ogg']['skeleton']['fishead']['raw']['version_minor'];

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$info['ogg']['skeleton']['fishead']['presentationtime'] = $info['ogg']['skeleton']['fishead']['raw']['presentationtime_numerator'] / $info['ogg']['skeleton']['fishead']['raw']['presentationtime_denominator'];

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$info['ogg']['skeleton']['fishead']['basetime'] = $info['ogg']['skeleton']['fishead']['raw']['basetime_numerator'] / $info['ogg']['skeleton']['fishead']['raw']['basetime_denominator'];

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$info['ogg']['skeleton']['fishead']['utc'] = $info['ogg']['skeleton']['fishead']['raw']['utc'];

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$counter = 0;

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do {

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$oggpageinfo = $this->ParseOggPageHeader();

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$info['ogg']['pageheader'][$oggpageinfo['page_seqno'].'.'.$counter++] = $oggpageinfo;

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$filedata = $this->fread($oggpageinfo['page_length']);

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$this->fseek($oggpageinfo['page_end_offset']);

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if (substr($filedata, 0, 8) == "fisbone\x00") {

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$filedataoffset = 8;

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$info['ogg']['skeleton']['fisbone']['raw']['message_header_offset'] = getid3_lib::LittleEndian2Int(substr($filedata, $filedataoffset, 4));

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$filedataoffset += 4;

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$info['ogg']['skeleton']['fisbone']['raw']['serial_number'] = getid3_lib::LittleEndian2Int(substr($filedata, $filedataoffset, 4));

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$filedataoffset += 4;

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$info['ogg']['skeleton']['fisbone']['raw']['number_header_packets'] = getid3_lib::LittleEndian2Int(substr($filedata, $filedataoffset, 4));

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$filedataoffset += 4;

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$info['ogg']['skeleton']['fisbone']['raw']['granulerate_numerator'] = getid3_lib::LittleEndian2Int(substr($filedata, $filedataoffset, 8));

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$filedataoffset += 8;

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$info['ogg']['skeleton']['fisbone']['raw']['granulerate_denominator'] = getid3_lib::LittleEndian2Int(substr($filedata, $filedataoffset, 8));

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$filedataoffset += 8;

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$info['ogg']['skeleton']['fisbone']['raw']['basegranule'] = getid3_lib::LittleEndian2Int(substr($filedata, $filedataoffset, 8));

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$filedataoffset += 8;

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$info['ogg']['skeleton']['fisbone']['raw']['preroll'] = getid3_lib::LittleEndian2Int(substr($filedata, $filedataoffset, 4));

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$filedataoffset += 4;

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$info['ogg']['skeleton']['fisbone']['raw']['granuleshift'] = getid3_lib::LittleEndian2Int(substr($filedata, $filedataoffset, 1));

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$filedataoffset += 1;

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$info['ogg']['skeleton']['fisbone']['raw']['padding'] = substr($filedata, $filedataoffset, 3);

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$filedataoffset += 3;

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} elseif (substr($filedata, 1, 6) == 'theora') {

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$info['video']['dataformat'] = 'theora1';

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$this->error('Ogg Theora (v1) not correctly handled in this version of getID3 ['.$this->getid3->version().']');

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//break;

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} elseif (substr($filedata, 1, 6) == 'vorbis') {

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$this->ParseVorbisPageHeader($filedata, $filedataoffset, $oggpageinfo);

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} else {

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$this->error('unexpected');

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//break;

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}

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//} while ($oggpageinfo['page_seqno'] == 0);

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} while (($oggpageinfo['page_seqno'] == 0) && (substr($filedata, 0, 8) != "fisbone\x00"));

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$this->fseek($oggpageinfo['page_start_offset']);

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$this->error('Ogg Skeleton not correctly handled in this version of getID3 ['.$this->getid3->version().']');

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//return false;

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} elseif (substr($filedata, 0, 5) == "\x7F".'FLAC') {

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// https://xiph.org/flac/ogg_mapping.html

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$info['audio']['dataformat'] = 'flac';

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$info['audio']['bitrate_mode'] = 'vbr';

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$info['audio']['lossless'] = true;

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$info['ogg']['flac']['header']['version_major'] = ord(substr($filedata, 5, 1));

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$info['ogg']['flac']['header']['version_minor'] = ord(substr($filedata, 6, 1));

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$info['ogg']['flac']['header']['header_packets'] = getid3_lib::BigEndian2Int(substr($filedata, 7, 2)) + 1; // "A two-byte, big-endian binary number signifying the number of header (non-audio) packets, not including this one. This number may be zero (0x0000) to signify 'unknown' but be aware that some decoders may not be able to handle such streams."

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$info['ogg']['flac']['header']['magic'] = substr($filedata, 9, 4);

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if ($info['ogg']['flac']['header']['magic'] != 'fLaC') {

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$this->error('Ogg-FLAC expecting "fLaC", found "'.$info['ogg']['flac']['header']['magic'].'" ('.trim(getid3_lib::PrintHexBytes($info['ogg']['flac']['header']['magic'])).')');

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return false;

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}

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$info['ogg']['flac']['header']['STREAMINFO_bytes'] = getid3_lib::BigEndian2Int(substr($filedata, 13, 4));

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$info['flac']['STREAMINFO'] = getid3_flac::parseSTREAMINFOdata(substr($filedata, 17, 34));

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if (!empty($info['flac']['STREAMINFO']['sample_rate'])) {

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$info['audio']['bitrate_mode'] = 'vbr';

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$info['audio']['sample_rate'] = $info['flac']['STREAMINFO']['sample_rate'];

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$info['audio']['channels'] = $info['flac']['STREAMINFO']['channels'];

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$info['audio']['bits_per_sample'] = $info['flac']['STREAMINFO']['bits_per_sample'];

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$info['playtime_seconds'] = $info['flac']['STREAMINFO']['samples_stream'] / $info['flac']['STREAMINFO']['sample_rate'];

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}

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} else {

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$this->error('Expecting one of "vorbis", "Speex", "OpusHead", "vorbis", "fishhead", "theora", "fLaC" identifier strings, found "'.substr($filedata, 0, 8).'"');

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unset($info['ogg']);

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unset($info['mime_type']);

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return false;

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}

[300] Fix | Delete

[301] Fix | Delete

// Page 2 - Comment Header

[302] Fix | Delete

$oggpageinfo = $this->ParseOggPageHeader();

[303] Fix | Delete

$info['ogg']['pageheader'][$oggpageinfo['page_seqno']] = $oggpageinfo;

[304] Fix | Delete

[305] Fix | Delete

switch ($info['audio']['dataformat']) {

[306] Fix | Delete

case 'vorbis':

[307] Fix | Delete

$filedata = $this->fread($info['ogg']['pageheader'][$oggpageinfo['page_seqno']]['page_length']);

[308] Fix | Delete

$info['ogg']['pageheader'][$oggpageinfo['page_seqno']]['packet_type'] = getid3_lib::LittleEndian2Int(substr($filedata, 0, 1));

[309] Fix | Delete

$info['ogg']['pageheader'][$oggpageinfo['page_seqno']]['stream_type'] = substr($filedata, 1, 6); // hard-coded to 'vorbis'

[310] Fix | Delete

[311] Fix | Delete

$this->ParseVorbisComments();

[312] Fix | Delete

break;

[313] Fix | Delete

[314] Fix | Delete

case 'flac':

[315] Fix | Delete

$flac = new getid3_flac($this->getid3);

[316] Fix | Delete

if (!$flac->parseMETAdata()) {

[317] Fix | Delete

$this->error('Failed to parse FLAC headers');

[318] Fix | Delete

return false;

[319] Fix | Delete

}

[320] Fix | Delete

unset($flac);

[321] Fix | Delete

break;

[322] Fix | Delete

[323] Fix | Delete

case 'speex':

[324] Fix | Delete

$this->fseek($info['ogg']['pageheader'][$oggpageinfo['page_seqno']]['page_length'], SEEK_CUR);

[325] Fix | Delete

$this->ParseVorbisComments();

[326] Fix | Delete

break;

[327] Fix | Delete

[328] Fix | Delete

case 'opus':

[329] Fix | Delete

$filedata = $this->fread($info['ogg']['pageheader'][$oggpageinfo['page_seqno']]['page_length']);

[330] Fix | Delete

$info['ogg']['pageheader'][$oggpageinfo['page_seqno']]['stream_type'] = substr($filedata, 0, 8); // hard-coded to 'OpusTags'

[331] Fix | Delete

if(substr($filedata, 0, 8) != 'OpusTags') {

[332] Fix | Delete

$this->error('Expected "OpusTags" as header but got "'.substr($filedata, 0, 8).'"');

[333] Fix | Delete

return false;

[334] Fix | Delete

}

[335] Fix | Delete

[336] Fix | Delete

$this->ParseVorbisComments();

[337] Fix | Delete

break;

[338] Fix | Delete

[339] Fix | Delete

}

[340] Fix | Delete

[341] Fix | Delete

// Last Page - Number of Samples

[342] Fix | Delete

if (!getid3_lib::intValueSupported($info['avdataend'])) {

[343] Fix | Delete

[344] Fix | Delete

$this->warning('Unable to parse Ogg end chunk file (PHP does not support file operations beyond '.round(PHP_INT_MAX / 1073741824).'GB)');

[345] Fix | Delete

[346] Fix | Delete

} else {

[347] Fix | Delete

[348] Fix | Delete

$this->fseek(max($info['avdataend'] - $this->getid3->fread_buffer_size(), 0));

[349] Fix | Delete

$LastChunkOfOgg = strrev($this->fread($this->getid3->fread_buffer_size()));

[350] Fix | Delete

if ($LastOggSpostion = strpos($LastChunkOfOgg, 'SggO')) {

[351] Fix | Delete

$this->fseek($info['avdataend'] - ($LastOggSpostion + strlen('SggO')));

[352] Fix | Delete

$info['avdataend'] = $this->ftell();

[353] Fix | Delete

$info['ogg']['pageheader']['eos'] = $this->ParseOggPageHeader();

[354] Fix | Delete

$info['ogg']['samples'] = $info['ogg']['pageheader']['eos']['pcm_abs_position'];

[355] Fix | Delete

if ($info['ogg']['samples'] == 0) {

[356] Fix | Delete

$this->error('Corrupt Ogg file: eos.number of samples == zero');

[357] Fix | Delete

return false;

[358] Fix | Delete

}

[359] Fix | Delete

if (!empty($info['audio']['sample_rate'])) {

[360] Fix | Delete

$info['ogg']['bitrate_average'] = (($info['avdataend'] - $info['avdataoffset']) * 8) / ($info['ogg']['samples'] / $info['audio']['sample_rate']);

[361] Fix | Delete

}

[362] Fix | Delete

}

[363] Fix | Delete

[364] Fix | Delete

}

[365] Fix | Delete

[366] Fix | Delete

if (!empty($info['ogg']['bitrate_average'])) {

[367] Fix | Delete

$info['audio']['bitrate'] = $info['ogg']['bitrate_average'];

[368] Fix | Delete

} elseif (!empty($info['ogg']['bitrate_nominal'])) {

[369] Fix | Delete

$info['audio']['bitrate'] = $info['ogg']['bitrate_nominal'];

[370] Fix | Delete

} elseif (!empty($info['ogg']['bitrate_min']) && !empty($info['ogg']['bitrate_max'])) {

[371] Fix | Delete

$info['audio']['bitrate'] = ($info['ogg']['bitrate_min'] + $info['ogg']['bitrate_max']) / 2;

[372] Fix | Delete

}

[373] Fix | Delete

if (isset($info['audio']['bitrate']) && !isset($info['playtime_seconds'])) {

[374] Fix | Delete

if ($info['audio']['bitrate'] == 0) {

[375] Fix | Delete

$this->error('Corrupt Ogg file: bitrate_audio == zero');

[376] Fix | Delete

return false;

[377] Fix | Delete

}

[378] Fix | Delete

$info['playtime_seconds'] = (float) ((($info['avdataend'] - $info['avdataoffset']) * 8) / $info['audio']['bitrate']);

[379] Fix | Delete

}

[380] Fix | Delete

[381] Fix | Delete

if (isset($info['ogg']['vendor'])) {

[382] Fix | Delete

$info['audio']['encoder'] = preg_replace('/^Encoded with /', '', $info['ogg']['vendor']);

[383] Fix | Delete

[384] Fix | Delete

// Vorbis only

[385] Fix | Delete

if ($info['audio']['dataformat'] == 'vorbis') {

[386] Fix | Delete

[387] Fix | Delete

// Vorbis 1.0 starts with Xiph.Org

[388] Fix | Delete

if (preg_match('/^Xiph.Org/', $info['audio']['encoder'])) {

[389] Fix | Delete

[390] Fix | Delete

if ($info['audio']['bitrate_mode'] == 'abr') {

[391] Fix | Delete

[392] Fix | Delete

// Set -b 128 on abr files

[393] Fix | Delete

$info['audio']['encoder_options'] = '-b '.round($info['ogg']['bitrate_nominal'] / 1000);

[394] Fix | Delete

[395] Fix | Delete

} elseif (($info['audio']['bitrate_mode'] == 'vbr') && ($info['audio']['channels'] == 2) && ($info['audio']['sample_rate'] >= 44100) && ($info['audio']['sample_rate'] <= 48000)) {

[396] Fix | Delete

// Set -q N on vbr files

[397] Fix | Delete

$info['audio']['encoder_options'] = '-q '.$this->get_quality_from_nominal_bitrate($info['ogg']['bitrate_nominal']);

[398] Fix | Delete

[399] Fix | Delete

}

[400] Fix | Delete

}

[401] Fix | Delete

[402] Fix | Delete

if (empty($info['audio']['encoder_options']) && !empty($info['ogg']['bitrate_nominal'])) {

[403] Fix | Delete

$info['audio']['encoder_options'] = 'Nominal bitrate: '.intval(round($info['ogg']['bitrate_nominal'] / 1000)).'kbps';

[404] Fix | Delete

}

[405] Fix | Delete

}

[406] Fix | Delete

}

[407] Fix | Delete

[408] Fix | Delete

return true;

[409] Fix | Delete

}

[410] Fix | Delete

[411] Fix | Delete

/**

[412] Fix | Delete

* @param string $filedata

[413] Fix | Delete

* @param int $filedataoffset

[414] Fix | Delete

* @param array $oggpageinfo

[415] Fix | Delete

*

[416] Fix | Delete

* @return bool

[417] Fix | Delete

*/

[418] Fix | Delete

public function ParseVorbisPageHeader(&$filedata, &$filedataoffset, &$oggpageinfo) {

[419] Fix | Delete

$info = &$this->getid3->info;

[420] Fix | Delete

$info['audio']['dataformat'] = 'vorbis';

[421] Fix | Delete

$info['audio']['lossless'] = false;

[422] Fix | Delete

[423] Fix | Delete

$info['ogg']['pageheader'][$oggpageinfo['page_seqno']]['packet_type'] = getid3_lib::LittleEndian2Int(substr($filedata, $filedataoffset, 1));

[424] Fix | Delete

$filedataoffset += 1;

[425] Fix | Delete

$info['ogg']['pageheader'][$oggpageinfo['page_seqno']]['stream_type'] = substr($filedata, $filedataoffset, 6); // hard-coded to 'vorbis'

[426] Fix | Delete

$filedataoffset += 6;

[427] Fix | Delete

$info['ogg']['bitstreamversion'] = getid3_lib::LittleEndian2Int(substr($filedata, $filedataoffset, 4));

[428] Fix | Delete

$filedataoffset += 4;

[429] Fix | Delete

$info['ogg']['numberofchannels'] = getid3_lib::LittleEndian2Int(substr($filedata, $filedataoffset, 1));

[430] Fix | Delete

$filedataoffset += 1;

[431] Fix | Delete

$info['audio']['channels'] = $info['ogg']['numberofchannels'];

[432] Fix | Delete

$info['ogg']['samplerate'] = getid3_lib::LittleEndian2Int(substr($filedata, $filedataoffset, 4));

[433] Fix | Delete

$filedataoffset += 4;

[434] Fix | Delete

if ($info['ogg']['samplerate'] == 0) {

[435] Fix | Delete

$this->error('Corrupt Ogg file: sample rate == zero');

[436] Fix | Delete

return false;

[437] Fix | Delete

}

[438] Fix | Delete

$info['audio']['sample_rate'] = $info['ogg']['samplerate'];

[439] Fix | Delete

$info['ogg']['samples'] = 0; // filled in later

[440] Fix | Delete

$info['ogg']['bitrate_average'] = 0; // filled in later

[441] Fix | Delete

$info['ogg']['bitrate_max'] = getid3_lib::LittleEndian2Int(substr($filedata, $filedataoffset, 4));

[442] Fix | Delete

$filedataoffset += 4;

[443] Fix | Delete

$info['ogg']['bitrate_nominal'] = getid3_lib::LittleEndian2Int(substr($filedata, $filedataoffset, 4));

[444] Fix | Delete

$filedataoffset += 4;

[445] Fix | Delete

$info['ogg']['bitrate_min'] = getid3_lib::LittleEndian2Int(substr($filedata, $filedataoffset, 4));

[446] Fix | Delete

$filedataoffset += 4;

[447] Fix | Delete

$info['ogg']['blocksize_small'] = pow(2, getid3_lib::LittleEndian2Int(substr($filedata, $filedataoffset, 1)) & 0x0F);

[448] Fix | Delete

$info['ogg']['blocksize_large'] = pow(2, (getid3_lib::LittleEndian2Int(substr($filedata, $filedataoffset, 1)) & 0xF0) >> 4);

[449] Fix | Delete

$info['ogg']['stop_bit'] = getid3_lib::LittleEndian2Int(substr($filedata, $filedataoffset, 1)); // must be 1, marks end of packet

[450] Fix | Delete

[451] Fix | Delete

$info['audio']['bitrate_mode'] = 'vbr'; // overridden if actually abr

[452] Fix | Delete

if ($info['ogg']['bitrate_max'] == 0xFFFFFFFF) {

[453] Fix | Delete

unset($info['ogg']['bitrate_max']);

[454] Fix | Delete

$info['audio']['bitrate_mode'] = 'abr';

[455] Fix | Delete

}

[456] Fix | Delete

if ($info['ogg']['bitrate_nominal'] == 0xFFFFFFFF) {

[457] Fix | Delete

unset($info['ogg']['bitrate_nominal']);

[458] Fix | Delete

}

[459] Fix | Delete

if ($info['ogg']['bitrate_min'] == 0xFFFFFFFF) {

[460] Fix | Delete

unset($info['ogg']['bitrate_min']);

[461] Fix | Delete

$info['audio']['bitrate_mode'] = 'abr';

[462] Fix | Delete

}

[463] Fix | Delete

return true;

[464] Fix | Delete

}

[465] Fix | Delete

[466] Fix | Delete

/**

[467] Fix | Delete

* @link http://tools.ietf.org/html/draft-ietf-codec-oggopus-03

[468] Fix | Delete

*

[469] Fix | Delete

* @param string $filedata

[470] Fix | Delete

* @param int $filedataoffset

[471] Fix | Delete

* @param array $oggpageinfo

[472] Fix | Delete

*

[473] Fix | Delete

* @return bool

[474] Fix | Delete

*/

[475] Fix | Delete

public function ParseOpusPageHeader(&$filedata, &$filedataoffset, &$oggpageinfo) {

[476] Fix | Delete

$info = &$this->getid3->info;

[477] Fix | Delete

$info['audio']['dataformat'] = 'opus';

[478] Fix | Delete

$info['mime_type'] = 'audio/ogg; codecs=opus';

[479] Fix | Delete

[480] Fix | Delete

/** @todo find a usable way to detect abr (vbr that is padded to be abr) */

[481] Fix | Delete

$info['audio']['bitrate_mode'] = 'vbr';

[482] Fix | Delete

[483] Fix | Delete

$info['audio']['lossless'] = false;

[484] Fix | Delete

[485] Fix | Delete

$info['ogg']['pageheader']['opus']['opus_magic'] = substr($filedata, $filedataoffset, 8); // hard-coded to 'OpusHead'

[486] Fix | Delete

$filedataoffset += 8;

[487] Fix | Delete

$info['ogg']['pageheader']['opus']['version'] = getid3_lib::LittleEndian2Int(substr($filedata, $filedataoffset, 1));

[488] Fix | Delete

$filedataoffset += 1;

[489] Fix | Delete

[490] Fix | Delete

if ($info['ogg']['pageheader']['opus']['version'] < 1 || $info['ogg']['pageheader']['opus']['version'] > 15) {

[491] Fix | Delete

$this->error('Unknown opus version number (only accepting 1-15)');

[492] Fix | Delete

return false;

[493] Fix | Delete

}

[494] Fix | Delete

[495] Fix | Delete

$info['ogg']['pageheader']['opus']['out_channel_count'] = getid3_lib::LittleEndian2Int(substr($filedata, $filedataoffset, 1));

[496] Fix | Delete

$filedataoffset += 1;

[497] Fix | Delete

[498] Fix | Delete

if ($info['ogg']['pageheader']['opus']['out_channel_count'] == 0) {

[499] Fix | Delete