mambax7 /
xoopseditors
Duplicate code is one of the most pungent code smells. A rule that is often used is to re-structure code once it is duplicated in three or more places.
Common duplication problems, and corresponding solutions are:
Complex classes like getid3_quicktime often do a lot of different things. To break such a class down, we need to identify a cohesive component within that class. A common approach to find such a component is to look for fields/methods that share the same prefixes, or suffixes. You can also have a look at the cohesion graph to spot any un-connected, or weakly-connected components.
Once you have determined the fields that belong together, you can apply the Extract Class refactoring. If the component makes sense as a sub-class, Extract Subclass is also a candidate, and is often faster.
While breaking up the class, it is a good idea to analyze how other classes use getid3_quicktime, and based on these observations, apply Extract Interface, too.
| 1 | <?php |
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| 27 | class getid3_quicktime extends getid3_handler |
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| 28 | { |
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| 29 | |||
| 30 | public function Analyze() { |
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| 31 | |||
| 32 | $getid3 = $this->getid3; |
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| 33 | |||
| 34 | $info = &$getid3->info; |
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| 35 | |||
| 36 | $getid3->include_module('audio.mp3'); |
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| 37 | |||
| 38 | $info['quicktime'] = array (); |
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| 39 | $info_quicktime = &$info['quicktime']; |
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| 40 | |||
| 41 | $info['fileformat'] = 'quicktime'; |
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| 42 | $info_quicktime['hinting'] = false; |
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| 43 | |||
| 44 | fseek($getid3->fp, $info['avdataoffset'], SEEK_SET); |
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| 45 | |||
| 46 | $offset = $atom_counter = 0; |
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| 47 | |||
| 48 | while ($offset < $info['avdataend']) { |
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| 49 | |||
| 50 | fseek($getid3->fp, $offset, SEEK_SET); |
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| 51 | $atom_header = fread($getid3->fp, 8); |
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| 52 | |||
| 53 | $atom_size = getid3_lib::BigEndian2Int(substr($atom_header, 0, 4)); |
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| 54 | $atom_name = substr($atom_header, 4, 4); |
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| 55 | |||
| 56 | $info_quicktime[$atom_name]['name'] = $atom_name; |
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| 57 | $info_quicktime[$atom_name]['size'] = $atom_size; |
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| 58 | $info_quicktime[$atom_name]['offset'] = $offset; |
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| 59 | |||
| 60 | if (($offset + $atom_size) > $info['avdataend']) { |
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| 61 | throw new getid3_exception('Atom at offset '.$offset.' claims to go beyond end-of-file (length: '.$atom_size.' bytes)'); |
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| 62 | } |
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| 63 | |||
| 64 | if ($atom_size == 0) { |
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| 65 | // Furthermore, for historical reasons the list of atoms is optionally |
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| 66 | // terminated by a 32-bit integer set to 0. If you are writing a program |
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| 67 | // to read user data atoms, you should allow for the terminating 0. |
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| 68 | break; |
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| 69 | } |
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| 70 | |||
| 71 | switch ($atom_name) { |
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| 72 | |||
| 73 | case 'mdat': // Media DATa atom |
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| 74 | // 'mdat' contains the actual data for the audio/video |
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| 75 | if (($atom_size > 8) && (!isset($info['avdataend_tmp']) || ($info_quicktime[$atom_name]['size'] > ($info['avdataend_tmp'] - $info['avdataoffset'])))) { |
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| 76 | |||
| 77 | $info['avdataoffset'] = $info_quicktime[$atom_name]['offset'] + 8; |
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| 78 | $old_av_data_end = $info['avdataend']; |
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| 79 | $info['avdataend'] = $info_quicktime[$atom_name]['offset'] + $info_quicktime[$atom_name]['size']; |
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| 80 | |||
| 81 | |||
| 82 | //// MP3 |
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| 83 | |||
| 84 | if (!$getid3->include_module_optional('audio.mp3')) { |
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|
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| 85 | $getid3->warning('MP3 skipped because mpeg module is missing.'); |
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| 86 | } |
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| 87 | |||
| 88 | else { |
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| 89 | |||
| 90 | // Clone getid3 - messing with offsets - better safe than sorry |
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| 91 | $clone = clone $getid3; |
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| 92 | |||
| 93 | if (getid3_mp3::MPEGaudioHeaderValid(getid3_mp3::MPEGaudioHeaderDecode(fread($clone->fp, 4)))) { |
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| 94 | |||
| 95 | $mp3 = new getid3_mp3($clone); |
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| 96 | $mp3->AnalyzeMPEGaudioInfo(); |
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| 97 | |||
| 98 | // Import from clone and destroy |
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| 99 | if (isset($clone->info['mpeg']['audio'])) { |
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| 100 | |||
| 101 | $info['mpeg']['audio'] = $clone->info['mpeg']['audio']; |
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| 102 | |||
| 103 | $info['audio']['dataformat'] = 'mp3'; |
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| 104 | $info['audio']['codec'] = (!empty($info['mpeg']['audio']['encoder']) ? $info['mpeg']['audio']['encoder'] : (!empty($info['mpeg']['audio']['codec']) ? $info['mpeg']['audio']['codec'] : (!empty($info['mpeg']['audio']['LAME']) ? 'LAME' :'mp3'))); |
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| 105 | $info['audio']['sample_rate'] = $info['mpeg']['audio']['sample_rate']; |
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| 106 | $info['audio']['channels'] = $info['mpeg']['audio']['channels']; |
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| 107 | $info['audio']['bitrate'] = $info['mpeg']['audio']['bitrate']; |
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| 108 | $info['audio']['bitrate_mode'] = strtolower($info['mpeg']['audio']['bitrate_mode']); |
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| 109 | $info['bitrate'] = $info['audio']['bitrate']; |
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| 110 | |||
| 111 | $getid3->warning($clone->warnings()); |
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| 112 | unset($clone); |
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| 113 | } |
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| 114 | } |
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| 115 | } |
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| 116 | |||
| 117 | $info['avdataend'] = $old_av_data_end; |
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| 118 | unset($old_av_data_end); |
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| 119 | |||
| 120 | } |
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| 121 | break; |
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| 122 | |||
| 123 | |||
| 124 | case 'free': // FREE space atom |
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| 125 | case 'skip': // SKIP atom |
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| 126 | case 'wide': // 64-bit expansion placeholder atom |
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| 127 | // 'free', 'skip' and 'wide' are just padding, contains no useful data at all |
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| 128 | break; |
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| 129 | |||
| 130 | |||
| 131 | default: |
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| 132 | $atom_hierarchy = array (); |
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| 133 | $info_quicktime[$atom_name] = $this->QuicktimeParseAtom($atom_name, $atom_size, fread($getid3->fp, $atom_size), $offset, $atom_hierarchy); |
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| 134 | break; |
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| 135 | } |
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| 136 | |||
| 137 | $offset += $atom_size; |
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| 138 | $atom_counter++; |
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| 139 | } |
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| 140 | |||
| 141 | if (!empty($info['avdataend_tmp'])) { |
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| 142 | // this value is assigned to a temp value and then erased because |
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| 143 | // otherwise any atoms beyond the 'mdat' atom would not get parsed |
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| 144 | $info['avdataend'] = $info['avdataend_tmp']; |
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| 145 | unset($info['avdataend_tmp']); |
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| 146 | } |
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| 147 | |||
| 148 | if (!isset($info['bitrate']) && isset($info['playtime_seconds'])) { |
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| 149 | $info['bitrate'] = (($info['avdataend'] - $info['avdataoffset']) * 8) / $info['playtime_seconds']; |
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| 150 | } |
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| 151 | |||
| 152 | if (isset($info['bitrate']) && !isset($info['audio']['bitrate']) && !isset($info_quicktime['video'])) { |
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| 153 | $info['audio']['bitrate'] = $info['bitrate']; |
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| 154 | } |
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| 155 | |||
| 156 | if ((@$info['audio']['dataformat'] == 'mp4') && empty($info['video']['resolution_x'])) { |
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| 157 | $info['fileformat'] = 'mp4'; |
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| 158 | $info['mime_type'] = 'audio/mp4'; |
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| 159 | unset($info['video']['dataformat']); |
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| 160 | } |
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| 161 | |||
| 162 | if (!$getid3->option_extra_info) { |
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| 163 | unset($info_quicktime['moov']); |
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| 164 | } |
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| 165 | |||
| 166 | if (empty($info['audio']['dataformat']) && !empty($info_quicktime['audio'])) { |
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| 167 | $info['audio']['dataformat'] = 'quicktime'; |
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| 168 | } |
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| 169 | |||
| 170 | if (empty($info['video']['dataformat']) && !empty($info_quicktime['video'])) { |
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| 171 | $info['video']['dataformat'] = 'quicktime'; |
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| 172 | } |
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| 173 | |||
| 174 | return true; |
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| 175 | } |
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| 176 | |||
| 177 | |||
| 178 | |||
| 179 | private function QuicktimeParseAtom($atom_name, $atom_size, $atom_data, $base_offset, &$atom_hierarchy) { |
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| 180 | |||
| 181 | // http://developer.apple.com/techpubs/quicktime/qtdevdocs/APIREF/INDEX/atomalphaindex.htm |
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| 182 | |||
| 183 | $getid3 = $this->getid3; |
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| 184 | |||
| 185 | $info = &$getid3->info; |
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| 186 | $info_quicktime = &$info['quicktime']; |
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| 187 | |||
| 188 | array_push($atom_hierarchy, $atom_name); |
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| 189 | $atom_structure['hierarchy'] = implode(' ', $atom_hierarchy); |
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| 190 | $atom_structure['name'] = $atom_name; |
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| 191 | $atom_structure['size'] = $atom_size; |
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| 192 | $atom_structure['offset'] = $base_offset; |
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| 193 | |||
| 194 | switch ($atom_name) { |
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| 195 | case 'moov': // MOVie container atom |
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| 196 | case 'trak': // TRAcK container atom |
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| 197 | case 'clip': // CLIPping container atom |
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| 198 | case 'matt': // track MATTe container atom |
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| 199 | case 'edts': // EDiTS container atom |
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| 200 | case 'tref': // Track REFerence container atom |
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| 201 | case 'mdia': // MeDIA container atom |
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| 202 | case 'minf': // Media INFormation container atom |
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| 203 | case 'dinf': // Data INFormation container atom |
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| 204 | case 'udta': // User DaTA container atom |
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| 205 | case 'stbl': // Sample TaBLe container atom |
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| 206 | case 'cmov': // Compressed MOVie container atom |
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| 207 | case 'rmra': // Reference Movie Record Atom |
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| 208 | case 'rmda': // Reference Movie Descriptor Atom |
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| 209 | case 'gmhd': // Generic Media info HeaDer atom (seen on QTVR) |
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| 210 | $atom_structure['subatoms'] = $this->QuicktimeParseContainerAtom($atom_data, $base_offset + 8, $atom_hierarchy); |
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| 211 | break; |
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| 212 | |||
| 213 | |||
| 214 | case '�cpy': |
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| 215 | case '�day': |
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| 216 | case '�dir': |
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| 217 | case '�ed1': |
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| 218 | case '�ed2': |
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| 219 | case '�ed3': |
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| 220 | case '�ed4': |
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| 221 | case '�ed5': |
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| 222 | case '�ed6': |
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| 223 | case '�ed7': |
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| 224 | case '�ed8': |
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| 225 | case '�ed9': |
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| 226 | case '�fmt': |
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| 227 | case '�inf': |
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| 228 | case '�prd': |
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| 229 | case '�prf': |
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| 230 | case '�req': |
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| 231 | case '�src': |
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| 232 | case '�wrt': |
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| 233 | case '�nam': |
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| 234 | case '�cmt': |
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| 235 | case '�wrn': |
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| 236 | case '�hst': |
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| 237 | case '�mak': |
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| 238 | case '�mod': |
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| 239 | case '�PRD': |
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| 240 | case '�swr': |
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| 241 | case '�aut': |
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| 242 | case '�ART': |
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| 243 | case '�trk': |
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| 244 | case '�alb': |
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| 245 | case '�com': |
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| 246 | case '�gen': |
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| 247 | case '�ope': |
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| 248 | case '�url': |
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| 249 | case '�enc': |
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| 250 | $atom_structure['data_length'] = getid3_lib::BigEndian2Int(substr($atom_data, 0, 2)); |
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| 251 | $atom_structure['language_id'] = getid3_lib::BigEndian2Int(substr($atom_data, 2, 2)); |
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| 252 | $atom_structure['data'] = substr($atom_data, 4); |
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| 253 | |||
| 254 | $atom_structure['language'] = $this->QuicktimeLanguageLookup($atom_structure['language_id']); |
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| 255 | if (empty($info['comments']['language']) || (!in_array($atom_structure['language'], $info['comments']['language']))) { |
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| 256 | $info['comments']['language'][] = $atom_structure['language']; |
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| 257 | } |
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| 258 | $this->CopyToAppropriateCommentsSection($atom_name, $atom_structure['data']); |
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| 259 | break; |
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| 260 | |||
| 261 | |||
| 262 | case 'play': // auto-PLAY atom |
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| 263 | $atom_structure['autoplay'] = (bool)getid3_lib::BigEndian2Int(substr($atom_data, 0, 1)); |
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| 264 | |||
| 265 | $info_quicktime['autoplay'] = $atom_structure['autoplay']; |
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| 266 | break; |
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| 267 | |||
| 268 | |||
| 269 | case 'WLOC': // Window LOCation atom |
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| 270 | $atom_structure['location_x'] = getid3_lib::BigEndian2Int(substr($atom_data, 0, 2)); |
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| 271 | $atom_structure['location_y'] = getid3_lib::BigEndian2Int(substr($atom_data, 2, 2)); |
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| 272 | break; |
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| 273 | |||
| 274 | |||
| 275 | case 'LOOP': // LOOPing atom |
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| 276 | case 'SelO': // play SELection Only atom |
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| 277 | case 'AllF': // play ALL Frames atom |
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| 278 | $atom_structure['data'] = getid3_lib::BigEndian2Int($atom_data); |
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| 279 | break; |
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| 280 | |||
| 281 | |||
| 282 | case 'name': // |
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| 283 | case 'MCPS': // Media Cleaner PRo |
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| 284 | case '@PRM': // adobe PReMiere version |
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| 285 | case '@PRQ': // adobe PRemiere Quicktime version |
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| 286 | $atom_structure['data'] = $atom_data; |
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| 287 | break; |
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| 288 | |||
| 289 | |||
| 290 | case 'cmvd': // Compressed MooV Data atom |
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| 291 | // Code by ubergeek�ubergeek*tv based on information from |
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| 292 | // http://developer.apple.com/quicktime/icefloe/dispatch012.html |
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| 293 | $atom_structure['unCompressedSize'] = getid3_lib::BigEndian2Int(substr($atom_data, 0, 4)); |
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| 294 | |||
| 295 | $compressed_file_data = substr($atom_data, 4); |
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| 296 | if (!function_exists('gzuncompress')) { |
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| 297 | $getid3->warning('PHP does not have zlib support - cannot decompress MOV atom at offset '.$atom_structure['offset']); |
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| 298 | } |
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| 299 | elseif ($uncompressed_header = @gzuncompress($compressed_file_data)) { |
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| 300 | $atom_structure['subatoms'] = $this->QuicktimeParseContainerAtom($uncompressed_header, 0, $atom_hierarchy); |
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| 301 | } else { |
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| 302 | $getid3->warning('Error decompressing compressed MOV atom at offset '.$atom_structure['offset']); |
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| 303 | } |
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| 304 | break; |
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| 305 | |||
| 306 | |||
| 307 | case 'dcom': // Data COMpression atom |
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| 308 | $atom_structure['compression_id'] = $atom_data; |
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| 309 | $atom_structure['compression_text'] = getid3_quicktime::QuicktimeDCOMLookup($atom_data); |
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| 310 | break; |
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| 311 | |||
| 312 | |||
| 313 | case 'rdrf': // Reference movie Data ReFerence atom |
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| 314 | getid3_lib::ReadSequence('BigEndian2Int', $atom_structure, $atom_data, 0, |
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| 315 | array ( |
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| 316 | 'version' => 1, |
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| 317 | 'flags_raw' => 3, |
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| 318 | 'reference_type_name' => -4, |
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| 319 | 'reference_length' => 4, |
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| 320 | ) |
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| 321 | ); |
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| 322 | |||
| 323 | $atom_structure['flags']['internal_data'] = (bool)($atom_structure['flags_raw'] & 0x000001); |
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| 324 | |||
| 325 | switch ($atom_structure['reference_type_name']) { |
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| 326 | case 'url ': |
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| 327 | $atom_structure['url'] = $this->NoNullString(substr($atom_data, 12)); |
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| 328 | break; |
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| 329 | |||
| 330 | case 'alis': |
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| 331 | $atom_structure['file_alias'] = substr($atom_data, 12); |
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| 332 | break; |
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| 333 | |||
| 334 | case 'rsrc': |
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| 335 | $atom_structure['resource_alias'] = substr($atom_data, 12); |
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| 336 | break; |
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| 337 | |||
| 338 | default: |
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| 339 | $atom_structure['data'] = substr($atom_data, 12); |
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| 340 | break; |
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| 341 | } |
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| 342 | break; |
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| 343 | |||
| 344 | |||
| 345 | case 'rmqu': // Reference Movie QUality atom |
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| 346 | $atom_structure['movie_quality'] = getid3_lib::BigEndian2Int($atom_data); |
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| 347 | break; |
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| 348 | |||
| 349 | |||
| 350 | case 'rmcs': // Reference Movie Cpu Speed atom |
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| 351 | getid3_lib::ReadSequence('BigEndian2Int', $atom_structure, $atom_data, 0, |
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| 352 | array ( |
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| 353 | 'version' => 1, |
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| 354 | 'flags_raw' => 3, // hardcoded: 0x0000 |
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| 355 | 'cpu_speed_rating' => 2 |
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| 356 | ) |
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| 357 | ); |
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| 358 | break; |
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| 359 | |||
| 360 | |||
| 361 | case 'rmvc': // Reference Movie Version Check atom |
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| 362 | getid3_lib::ReadSequence('BigEndian2Int', $atom_structure, $atom_data, 0, |
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| 363 | array ( |
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| 364 | 'version' => 1, |
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| 365 | 'flags_raw' => 3, // hardcoded: 0x0000 |
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| 366 | 'gestalt_selector' => -4, |
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| 367 | 'gestalt_value_mask' => 4, |
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| 368 | 'gestalt_value' => 4, |
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| 369 | 'gestalt_check_type' => 2 |
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| 370 | ) |
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| 371 | ); |
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| 372 | break; |
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| 373 | |||
| 374 | |||
| 375 | case 'rmcd': // Reference Movie Component check atom |
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| 376 | getid3_lib::ReadSequence('BigEndian2Int', $atom_structure, $atom_data, 0, |
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| 377 | array ( |
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| 378 | 'version' => 1, |
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| 379 | 'flags_raw' => 3, // hardcoded: 0x0000 |
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| 380 | 'component_type' => -4, |
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| 381 | 'component_subtype' => -4, |
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| 382 | 'component_manufacturer' => -4, |
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| 383 | 'component_flags_raw' => 4, |
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| 384 | 'component_flags_mask' => 4, |
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| 385 | 'component_min_version' => 4 |
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| 386 | ) |
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| 387 | ); |
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| 388 | break; |
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| 389 | |||
| 390 | |||
| 391 | case 'rmdr': // Reference Movie Data Rate atom |
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| 392 | getid3_lib::ReadSequence('BigEndian2Int', $atom_structure, $atom_data, 0, |
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| 393 | array ( |
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| 394 | 'version' => 1, |
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| 395 | 'flags_raw' => 3, // hardcoded: 0x0000 |
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| 396 | 'data_rate' => 4 |
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| 397 | ) |
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| 398 | ); |
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| 399 | |||
| 400 | $atom_structure['data_rate_bps'] = $atom_structure['data_rate'] * 10; |
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| 401 | break; |
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| 402 | |||
| 403 | |||
| 404 | case 'rmla': // Reference Movie Language Atom |
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| 405 | getid3_lib::ReadSequence('BigEndian2Int', $atom_structure, $atom_data, 0, |
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| 406 | array ( |
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| 407 | 'version' => 1, |
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| 408 | 'flags_raw' => 3, // hardcoded: 0x0000 |
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| 409 | 'language_id' => 2 |
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| 410 | ) |
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| 411 | ); |
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| 412 | |||
| 413 | $atom_structure['language'] = $this->QuicktimeLanguageLookup($atom_structure['language_id']); |
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| 414 | if (empty($info['comments']['language']) || (!in_array($atom_structure['language'], $info['comments']['language']))) { |
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| 415 | $info['comments']['language'][] = $atom_structure['language']; |
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| 416 | } |
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| 417 | break; |
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| 418 | |||
| 419 | |||
| 420 | case 'rmla': // Reference Movie Language Atom |
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| 421 | getid3_lib::ReadSequence('BigEndian2Int', $atom_structure, $atom_data, 0, |
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| 422 | array ( |
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| 423 | 'version' => 1, |
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| 424 | 'flags_raw' => 3, // hardcoded: 0x0000 |
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| 425 | 'track_id' => 2 |
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| 426 | ) |
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| 427 | ); |
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| 428 | break; |
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| 429 | |||
| 430 | |||
| 431 | case 'ptv ': // Print To Video - defines a movie's full screen mode |
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| 432 | // http://developer.apple.com/documentation/QuickTime/APIREF/SOURCESIV/at_ptv-_pg.htm |
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| 433 | getid3_lib::ReadSequence('BigEndian2Int', $atom_structure, $atom_data, 0, |
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| 434 | array ( |
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| 435 | 'display_size_raw' => 2, |
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| 436 | 'reserved_1' => 2, // hardcoded: 0x0000 |
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| 437 | 'reserved_2' => 2, // hardcoded: 0x0000 |
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| 438 | 'slide_show_flag' => 1, |
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| 439 | 'play_on_open_flag' => 1 |
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| 440 | ) |
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| 441 | ); |
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| 442 | |||
| 443 | $atom_structure['flags']['play_on_open'] = (bool)$atom_structure['play_on_open_flag']; |
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| 444 | $atom_structure['flags']['slide_show'] = (bool)$atom_structure['slide_show_flag']; |
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| 445 | |||
| 446 | $ptv_lookup[0] = 'normal'; |
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| 447 | $ptv_lookup[1] = 'double'; |
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| 448 | $ptv_lookup[2] = 'half'; |
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| 449 | $ptv_lookup[3] = 'full'; |
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| 450 | $ptv_lookup[4] = 'current'; |
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| 451 | if (isset($ptv_lookup[$atom_structure['display_size_raw']])) { |
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| 452 | $atom_structure['display_size'] = $ptv_lookup[$atom_structure['display_size_raw']]; |
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| 453 | } else { |
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| 454 | $getid3->warning('unknown "ptv " display constant ('.$atom_structure['display_size_raw'].')'); |
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| 455 | } |
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| 456 | break; |
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| 457 | |||
| 458 | |||
| 459 | case 'stsd': // Sample Table Sample Description atom |
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| 460 | getid3_lib::ReadSequence('BigEndian2Int', $atom_structure, $atom_data, 0, |
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| 461 | array ( |
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| 462 | 'version' => 1, |
||
| 463 | 'flags_raw' => 3, // hardcoded: 0x0000 |
||
| 464 | 'number_entries' => 4 |
||
| 465 | ) |
||
| 466 | ); |
||
| 467 | $stsd_entries_data_offset = 8; |
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| 468 | for ($i = 0; $i < $atom_structure['number_entries']; $i++) { |
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| 469 | |||
| 470 | getid3_lib::ReadSequence('BigEndian2Int', $atom_structure['sample_description_table'][$i], $atom_data, $stsd_entries_data_offset, |
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| 471 | array ( |
||
| 472 | 'size' => 4, |
||
| 473 | 'data_format' => -4, |
||
| 474 | 'reserved' => 6, |
||
| 475 | 'reference_index' => 2 |
||
| 476 | ) |
||
| 477 | ); |
||
| 478 | |||
| 479 | $atom_structure['sample_description_table'][$i]['data'] = substr($atom_data, 16+$stsd_entries_data_offset, ($atom_structure['sample_description_table'][$i]['size'] - 4 - 4 - 6 - 2)); |
||
| 480 | $stsd_entries_data_offset += 16 + ($atom_structure['sample_description_table'][$i]['size'] - 4 - 4 - 6 - 2); |
||
| 481 | |||
| 482 | getid3_lib::ReadSequence('BigEndian2Int', $atom_structure['sample_description_table'][$i], $atom_structure['sample_description_table'][$i]['data'], 0, |
||
| 483 | array ( |
||
| 484 | 'encoder_version' => 2, |
||
| 485 | 'encoder_revision' => 2, |
||
| 486 | 'encoder_vendor' => -4 |
||
| 487 | ) |
||
| 488 | ); |
||
| 489 | |||
| 490 | switch ($atom_structure['sample_description_table'][$i]['encoder_vendor']) { |
||
| 491 | |||
| 492 | case "\x00\x00\x00\x00": |
||
| 493 | // audio atom |
||
| 494 | getid3_lib::ReadSequence('BigEndian2Int', $atom_structure['sample_description_table'][$i], $atom_structure['sample_description_table'][$i]['data'], 8, |
||
| 495 | array ( |
||
| 496 | 'audio_channels' => 2, |
||
| 497 | 'audio_bit_depth' => 2, |
||
| 498 | 'audio_compression_id' => 2, |
||
| 499 | 'audio_packet_size' => 2 |
||
| 500 | ) |
||
| 501 | ); |
||
| 502 | |||
| 503 | $atom_structure['sample_description_table'][$i]['audio_sample_rate'] = getid3_quicktime::FixedPoint16_16(substr($atom_structure['sample_description_table'][$i]['data'], 16, 4)); |
||
| 504 | |||
| 505 | switch ($atom_structure['sample_description_table'][$i]['data_format']) { |
||
| 506 | |||
| 507 | case 'mp4v': |
||
| 508 | $info['fileformat'] = 'mp4'; |
||
| 509 | throw new getid3_exception('This version of getID3() does not fully support MPEG-4 audio/video streams'); |
||
| 510 | |||
| 511 | case 'qtvr': |
||
| 512 | $info['video']['dataformat'] = 'quicktimevr'; |
||
| 513 | break; |
||
| 514 | |||
| 515 | case 'mp4a': |
||
| 516 | default: |
||
| 517 | $info_quicktime['audio']['codec'] = $this->QuicktimeAudioCodecLookup($atom_structure['sample_description_table'][$i]['data_format']); |
||
| 518 | $info_quicktime['audio']['sample_rate'] = $atom_structure['sample_description_table'][$i]['audio_sample_rate']; |
||
| 519 | $info_quicktime['audio']['channels'] = $atom_structure['sample_description_table'][$i]['audio_channels']; |
||
| 520 | $info_quicktime['audio']['bit_depth'] = $atom_structure['sample_description_table'][$i]['audio_bit_depth']; |
||
| 521 | $info['audio']['codec'] = $info_quicktime['audio']['codec']; |
||
| 522 | $info['audio']['sample_rate'] = $info_quicktime['audio']['sample_rate']; |
||
| 523 | $info['audio']['channels'] = $info_quicktime['audio']['channels']; |
||
| 524 | $info['audio']['bits_per_sample'] = $info_quicktime['audio']['bit_depth']; |
||
| 525 | switch ($atom_structure['sample_description_table'][$i]['data_format']) { |
||
| 526 | case 'raw ': // PCM |
||
| 527 | case 'alac': // Apple Lossless Audio Codec |
||
| 528 | $info['audio']['lossless'] = true; |
||
| 529 | break; |
||
| 530 | default: |
||
| 531 | $info['audio']['lossless'] = false; |
||
| 532 | break; |
||
| 533 | } |
||
| 534 | break; |
||
| 535 | } |
||
| 536 | break; |
||
| 537 | |||
| 538 | default: |
||
| 539 | switch ($atom_structure['sample_description_table'][$i]['data_format']) { |
||
| 540 | case 'mp4s': |
||
| 541 | $info['fileformat'] = 'mp4'; |
||
| 542 | break; |
||
| 543 | |||
| 544 | default: |
||
| 545 | // video atom |
||
| 546 | getid3_lib::ReadSequence('BigEndian2Int', $atom_structure['sample_description_table'][$i], $atom_structure['sample_description_table'][$i]['data'], 8, |
||
| 547 | array ( |
||
| 548 | 'video_temporal_quality' => 4, |
||
| 549 | 'video_spatial_quality' => 4, |
||
| 550 | 'video_frame_width' => 2, |
||
| 551 | 'video_frame_height' => 2 |
||
| 552 | ) |
||
| 553 | ); |
||
| 554 | $atom_structure['sample_description_table'][$i]['video_resolution_x'] = getid3_quicktime::FixedPoint16_16(substr($atom_structure['sample_description_table'][$i]['data'], 20, 4)); |
||
| 555 | $atom_structure['sample_description_table'][$i]['video_resolution_y'] = getid3_quicktime::FixedPoint16_16(substr($atom_structure['sample_description_table'][$i]['data'], 24, 4)); |
||
| 556 | getid3_lib::ReadSequence('BigEndian2Int', $atom_structure['sample_description_table'][$i], $atom_structure['sample_description_table'][$i]['data'], 28, |
||
| 557 | array ( |
||
| 558 | 'video_data_size' => 4, |
||
| 559 | 'video_frame_count' => 2, |
||
| 560 | 'video_encoder_name_len' => 1 |
||
| 561 | ) |
||
| 562 | ); |
||
| 563 | $atom_structure['sample_description_table'][$i]['video_encoder_name'] = substr($atom_structure['sample_description_table'][$i]['data'], 35, $atom_structure['sample_description_table'][$i]['video_encoder_name_len']); |
||
| 564 | $atom_structure['sample_description_table'][$i]['video_pixel_color_depth'] = getid3_lib::BigEndian2Int(substr($atom_structure['sample_description_table'][$i]['data'], 66, 2)); |
||
| 565 | $atom_structure['sample_description_table'][$i]['video_color_table_id'] = getid3_lib::BigEndian2Int(substr($atom_structure['sample_description_table'][$i]['data'], 68, 2)); |
||
| 566 | |||
| 567 | $atom_structure['sample_description_table'][$i]['video_pixel_color_type'] = (($atom_structure['sample_description_table'][$i]['video_pixel_color_depth'] > 32) ? 'grayscale' : 'color'); |
||
| 568 | $atom_structure['sample_description_table'][$i]['video_pixel_color_name'] = $this->QuicktimeColorNameLookup($atom_structure['sample_description_table'][$i]['video_pixel_color_depth']); |
||
| 569 | |||
| 570 | if ($atom_structure['sample_description_table'][$i]['video_pixel_color_name'] != 'invalid') { |
||
| 571 | $info_quicktime['video']['codec_fourcc'] = $atom_structure['sample_description_table'][$i]['data_format']; |
||
| 572 | $info_quicktime['video']['codec_fourcc_lookup'] = $this->QuicktimeVideoCodecLookup($atom_structure['sample_description_table'][$i]['data_format']); |
||
| 573 | $info_quicktime['video']['codec'] = $atom_structure['sample_description_table'][$i]['video_encoder_name']; |
||
| 574 | $info_quicktime['video']['color_depth'] = $atom_structure['sample_description_table'][$i]['video_pixel_color_depth']; |
||
| 575 | $info_quicktime['video']['color_depth_name'] = $atom_structure['sample_description_table'][$i]['video_pixel_color_name']; |
||
| 576 | |||
| 577 | $info['video']['codec'] = $info_quicktime['video']['codec']; |
||
| 578 | $info['video']['bits_per_sample'] = $info_quicktime['video']['color_depth']; |
||
| 579 | } |
||
| 580 | $info['video']['lossless'] = false; |
||
| 581 | $info['video']['pixel_aspect_ratio'] = (float)1; |
||
| 582 | break; |
||
| 583 | } |
||
| 584 | break; |
||
| 585 | } |
||
| 586 | switch (strtolower($atom_structure['sample_description_table'][$i]['data_format'])) { |
||
| 587 | case 'mp4a': |
||
| 588 | $info['audio']['dataformat'] = $info_quicktime['audio']['codec'] = 'mp4'; |
||
| 589 | break; |
||
| 590 | |||
| 591 | case '3ivx': |
||
| 592 | case '3iv1': |
||
| 593 | case '3iv2': |
||
| 594 | $info['video']['dataformat'] = '3ivx'; |
||
| 595 | break; |
||
| 596 | |||
| 597 | case 'xvid': |
||
| 598 | $info['video']['dataformat'] = 'xvid'; |
||
| 599 | break; |
||
| 600 | |||
| 601 | case 'mp4v': |
||
| 602 | $info['video']['dataformat'] = 'mpeg4'; |
||
| 603 | break; |
||
| 604 | |||
| 605 | case 'divx': |
||
| 606 | case 'div1': |
||
| 607 | case 'div2': |
||
| 608 | case 'div3': |
||
| 609 | case 'div4': |
||
| 610 | case 'div5': |
||
| 611 | case 'div6': |
||
| 612 | //$TDIVXileInfo['video']['dataformat'] = 'divx'; |
||
| 613 | break; |
||
| 614 | |||
| 615 | default: |
||
| 616 | // do nothing |
||
| 617 | break; |
||
| 618 | } |
||
| 619 | unset($atom_structure['sample_description_table'][$i]['data']); |
||
| 620 | } |
||
| 621 | break; |
||
| 622 | |||
| 623 | |||
| 624 | case 'stts': // Sample Table Time-to-Sample atom |
||
| 625 | getid3_lib::ReadSequence('BigEndian2Int', $atom_structure, $atom_data, 0, |
||
| 626 | array ( |
||
| 627 | 'version' => 1, |
||
| 628 | 'flags_raw' => 3, // hardcoded: 0x0000 |
||
| 629 | 'number_entries' => 4 |
||
| 630 | ) |
||
| 631 | ); |
||
| 632 | |||
| 633 | $stts_entries_data_offset = 8; |
||
| 634 | $frame_rate_calculator_array = array (); |
||
| 635 | for ($i = 0; $i < $atom_structure['number_entries']; $i++) { |
||
| 636 | |||
| 637 | $atom_structure['time_to_sample_table'][$i]['sample_count'] = getid3_lib::BigEndian2Int(substr($atom_data, $stts_entries_data_offset, 4)); |
||
| 638 | $stts_entries_data_offset += 4; |
||
| 639 | |||
| 640 | $atom_structure['time_to_sample_table'][$i]['sample_duration'] = getid3_lib::BigEndian2Int(substr($atom_data, $stts_entries_data_offset, 4)); |
||
| 641 | $stts_entries_data_offset += 4; |
||
| 642 | |||
| 643 | if (!empty($info_quicktime['time_scale']) && (@$atoms_structure['time_to_sample_table'][$i]['sample_duration'] > 0)) { |
||
| 644 | |||
| 645 | $stts_new_framerate = $info_quicktime['time_scale'] / $atom_structure['time_to_sample_table'][$i]['sample_duration']; |
||
| 646 | if ($stts_new_framerate <= 60) { |
||
| 647 | // some atoms have durations of "1" giving a very large framerate, which probably is not right |
||
| 648 | $info['video']['frame_rate'] = max(@$info['video']['frame_rate'], $stts_new_framerate); |
||
| 649 | } |
||
| 650 | } |
||
| 651 | //@$frame_rate_calculator_array[($info_quicktime['time_scale'] / $atom_structure['time_to_sample_table'][$i]['sample_duration'])] += $atom_structure['time_to_sample_table'][$i]['sample_count']; |
||
| 652 | } |
||
| 653 | /* |
||
| 654 | $stts_frames_total = 0; |
||
| 655 | $stts_seconds_total = 0; |
||
| 656 | foreach ($frame_rate_calculator_array as $frames_per_second => $frame_count) { |
||
| 657 | if (($frames_per_second > 60) || ($frames_per_second < 1)) { |
||
| 658 | // not video FPS information, probably audio information |
||
| 659 | $stts_frames_total = 0; |
||
| 660 | $stts_seconds_total = 0; |
||
| 661 | break; |
||
| 662 | } |
||
| 663 | $stts_frames_total += $frame_count; |
||
| 664 | $stts_seconds_total += $frame_count / $frames_per_second; |
||
| 665 | } |
||
| 666 | if (($stts_frames_total > 0) && ($stts_seconds_total > 0)) { |
||
| 667 | if (($stts_frames_total / $stts_seconds_total) > @$info['video']['frame_rate']) { |
||
| 668 | $info['video']['frame_rate'] = $stts_frames_total / $stts_seconds_total; |
||
| 669 | } |
||
| 670 | } |
||
| 671 | */ |
||
| 672 | break; |
||
| 673 | |||
| 674 | |||
| 675 | case 'stss': // Sample Table Sync Sample (key frames) atom |
||
| 676 | /* |
||
| 677 | $atom_structure['version'] = getid3_lib::BigEndian2Int(substr($atom_data, 0, 1)); |
||
| 678 | $atom_structure['flags_raw'] = getid3_lib::BigEndian2Int(substr($atom_data, 1, 3)); // hardcoded: 0x0000 |
||
| 679 | $atom_structure['number_entries'] = getid3_lib::BigEndian2Int(substr($atom_data, 4, 4)); |
||
| 680 | $stss_entries_data_offset = 8; |
||
| 681 | for ($i = 0; $i < $atom_structure['number_entries']; $i++) { |
||
| 682 | $atom_structure['time_to_sample_table'][$i] = getid3_lib::BigEndian2Int(substr($atom_data, $stss_entries_data_offset, 4)); |
||
| 683 | $stss_entries_data_offset += 4; |
||
| 684 | } |
||
| 685 | */ |
||
| 686 | break; |
||
| 687 | |||
| 688 | |||
| 689 | case 'stsc': // Sample Table Sample-to-Chunk atom |
||
| 690 | /* |
||
| 691 | $atom_structure['version'] = getid3_lib::BigEndian2Int(substr($atom_data, 0, 1)); |
||
| 692 | $atom_structure['flags_raw'] = getid3_lib::BigEndian2Int(substr($atom_data, 1, 3)); // hardcoded: 0x0000 |
||
| 693 | $atom_structure['number_entries'] = getid3_lib::BigEndian2Int(substr($atom_data, 4, 4)); |
||
| 694 | $stsc_entries_data_offset = 8; |
||
| 695 | for ($i = 0; $i < $atom_structure['number_entries']; $i++) { |
||
| 696 | $atom_structure['sample_to_chunk_table'][$i]['first_chunk'] = getid3_lib::BigEndian2Int(substr($atom_data, $stsc_entries_data_offset, 4)); |
||
| 697 | $stsc_entries_data_offset += 4; |
||
| 698 | $atom_structure['sample_to_chunk_table'][$i]['samples_per_chunk'] = getid3_lib::BigEndian2Int(substr($atom_data, $stsc_entries_data_offset, 4)); |
||
| 699 | $stsc_entries_data_offset += 4; |
||
| 700 | $atom_structure['sample_to_chunk_table'][$i]['sample_description'] = getid3_lib::BigEndian2Int(substr($atom_data, $stsc_entries_data_offset, 4)); |
||
| 701 | $stsc_entries_data_offset += 4; |
||
| 702 | } |
||
| 703 | */ |
||
| 704 | break; |
||
| 705 | |||
| 706 | |||
| 707 | case 'stsz': // Sample Table SiZe atom |
||
| 708 | /* |
||
| 709 | $atom_structure['version'] = getid3_lib::BigEndian2Int(substr($atom_data, 0, 1)); |
||
| 710 | $atom_structure['flags_raw'] = getid3_lib::BigEndian2Int(substr($atom_data, 1, 3)); // hardcoded: 0x0000 |
||
| 711 | $atom_structure['sample_size'] = getid3_lib::BigEndian2Int(substr($atom_data, 4, 4)); |
||
| 712 | $atom_structure['number_entries'] = getid3_lib::BigEndian2Int(substr($atom_data, 8, 4)); |
||
| 713 | $stsz_entries_data_offset = 12; |
||
| 714 | if ($atom_structure['sample_size'] == 0) { |
||
| 715 | for ($i = 0; $i < $atom_structure['number_entries']; $i++) { |
||
| 716 | $atom_structure['sample_size_table'][$i] = getid3_lib::BigEndian2Int(substr($atom_data, $stsz_entries_data_offset, 4)); |
||
| 717 | $stsz_entries_data_offset += 4; |
||
| 718 | } |
||
| 719 | } |
||
| 720 | */ |
||
| 721 | break; |
||
| 722 | |||
| 723 | |||
| 724 | case 'stco': // Sample Table Chunk Offset atom |
||
| 725 | /* |
||
| 726 | $atom_structure['version'] = getid3_lib::BigEndian2Int(substr($atom_data, 0, 1)); |
||
| 727 | $atom_structure['flags_raw'] = getid3_lib::BigEndian2Int(substr($atom_data, 1, 3)); // hardcoded: 0x0000 |
||
| 728 | $atom_structure['number_entries'] = getid3_lib::BigEndian2Int(substr($atom_data, 4, 4)); |
||
| 729 | $stco_entries_data_offset = 8; |
||
| 730 | for ($i = 0; $i < $atom_structure['number_entries']; $i++) { |
||
| 731 | $atom_structure['chunk_offset_table'][$i] = getid3_lib::BigEndian2Int(substr($atom_data, $stco_entries_data_offset, 4)); |
||
| 732 | $stco_entries_data_offset += 4; |
||
| 733 | } |
||
| 734 | */ |
||
| 735 | break; |
||
| 736 | |||
| 737 | |||
| 738 | case 'dref': // Data REFerence atom |
||
| 739 | getid3_lib::ReadSequence('BigEndian2Int', $atom_structure, $atom_data, 0, |
||
| 740 | array ( |
||
| 741 | 'version' => 1, |
||
| 742 | 'flags_raw' => 3, // hardcoded: 0x0000 |
||
| 743 | 'number_entries' => 4 |
||
| 744 | ) |
||
| 745 | ); |
||
| 746 | |||
| 747 | $dref_data_offset = 8; |
||
| 748 | for ($i = 0; $i < $atom_structure['number_entries']; $i++) { |
||
| 749 | |||
| 750 | getid3_lib::ReadSequence('BigEndian2Int', $atom_structure['data_references'][$i], $atom_data, $dref_data_offset, |
||
| 751 | array ( |
||
| 752 | 'size' => 4, |
||
| 753 | 'type' => -4, |
||
| 754 | 'version' => 1, |
||
| 755 | 'flags_raw' => 3 // hardcoded: 0x0000 |
||
| 756 | ) |
||
| 757 | ); |
||
| 758 | $dref_data_offset += 12; |
||
| 759 | |||
| 760 | $atom_structure['data_references'][$i]['data'] = substr($atom_data, $dref_data_offset, ($atom_structure['data_references'][$i]['size'] - 4 - 4 - 1 - 3)); |
||
| 761 | $dref_data_offset += ($atom_structure['data_references'][$i]['size'] - 4 - 4 - 1 - 3); |
||
| 762 | |||
| 763 | $atom_structure['data_references'][$i]['flags']['self_reference'] = (bool)($atom_structure['data_references'][$i]['flags_raw'] & 0x001); |
||
| 764 | } |
||
| 765 | break; |
||
| 766 | |||
| 767 | |||
| 768 | case 'gmin': // base Media INformation atom |
||
| 769 | getid3_lib::ReadSequence('BigEndian2Int', $atom_structure, $atom_data, 0, |
||
| 770 | array ( |
||
| 771 | 'version' => 1, |
||
| 772 | 'flags_raw' => 3, // hardcoded: 0x0000 |
||
| 773 | 'graphics_mode' => 2, |
||
| 774 | 'opcolor_red' => 2, |
||
| 775 | 'opcolor_green' => 2, |
||
| 776 | 'opcolor_blue' => 2, |
||
| 777 | 'balance' => 2, |
||
| 778 | 'reserved' => 2 |
||
| 779 | ) |
||
| 780 | ); |
||
| 781 | break; |
||
| 782 | |||
| 783 | |||
| 784 | case 'smhd': // Sound Media information HeaDer atom |
||
| 785 | getid3_lib::ReadSequence('BigEndian2Int', $atom_structure, $atom_data, 0, |
||
| 786 | array ( |
||
| 787 | 'version' => 1, |
||
| 788 | 'flags_raw' => 3, // hardcoded: 0x0000 |
||
| 789 | 'balance' => 2, |
||
| 790 | 'reserved' => 2 |
||
| 791 | ) |
||
| 792 | ); |
||
| 793 | break; |
||
| 794 | |||
| 795 | |||
| 796 | case 'vmhd': // Video Media information HeaDer atom |
||
| 797 | getid3_lib::ReadSequence('BigEndian2Int', $atom_structure, $atom_data, 0, |
||
| 798 | array ( |
||
| 799 | 'version' => 1, |
||
| 800 | 'flags_raw' => 3, |
||
| 801 | 'graphics_mode' => 2, |
||
| 802 | 'opcolor_red' => 2, |
||
| 803 | 'opcolor_green' => 2, |
||
| 804 | 'opcolor_blue' => 2 |
||
| 805 | ) |
||
| 806 | ); |
||
| 807 | $atom_structure['flags']['no_lean_ahead'] = (bool)($atom_structure['flags_raw'] & 0x001); |
||
| 808 | break; |
||
| 809 | |||
| 810 | |||
| 811 | case 'hdlr': // HanDLeR reference atom |
||
| 812 | getid3_lib::ReadSequence('BigEndian2Int', $atom_structure, $atom_data, 0, |
||
| 813 | array ( |
||
| 814 | 'version' => 1, |
||
| 815 | 'flags_raw' => 3, // hardcoded: 0x0000 |
||
| 816 | 'component_type' => -4, |
||
| 817 | 'component_subtype' => -4, |
||
| 818 | 'component_manufacturer' => -4, |
||
| 819 | 'component_flags_raw' => 4, |
||
| 820 | 'component_flags_mask' => 4 |
||
| 821 | ) |
||
| 822 | ); |
||
| 823 | |||
| 824 | $atom_structure['component_name'] = substr(substr($atom_data, 24), 1); /// Pascal2String |
||
| 825 | |||
| 826 | if (($atom_structure['component_subtype'] == 'STpn') && ($atom_structure['component_manufacturer'] == 'zzzz')) { |
||
| 827 | $info['video']['dataformat'] = 'quicktimevr'; |
||
| 828 | } |
||
| 829 | break; |
||
| 830 | |||
| 831 | |||
| 832 | case 'mdhd': // MeDia HeaDer atom |
||
| 833 | getid3_lib::ReadSequence('BigEndian2Int', $atom_structure, $atom_data, 0, |
||
| 834 | array ( |
||
| 835 | 'version' => 1, |
||
| 836 | 'flags_raw' => 3, // hardcoded: 0x0000 |
||
| 837 | 'creation_time' => 4, |
||
| 838 | 'modify_time' => 4, |
||
| 839 | 'time_scale' => 4, |
||
| 840 | 'duration' => 4, |
||
| 841 | 'language_id' => 2, |
||
| 842 | 'quality' => 2 |
||
| 843 | ) |
||
| 844 | ); |
||
| 845 | |||
| 846 | if ($atom_structure['time_scale'] == 0) { |
||
| 847 | throw new getid3_exception('Corrupt Quicktime file: mdhd.time_scale == zero'); |
||
| 848 | } |
||
| 849 | $info_quicktime['time_scale'] = max(@$info['quicktime']['time_scale'], $atom_structure['time_scale']); |
||
| 850 | |||
| 851 | $atom_structure['creation_time_unix'] = (int)($atom_structure['creation_time'] - 2082844800); // DateMac2Unix() |
||
| 852 | $atom_structure['modify_time_unix'] = (int)($atom_structure['modify_time'] - 2082844800); // DateMac2Unix() |
||
| 853 | $atom_structure['playtime_seconds'] = $atom_structure['duration'] / $atom_structure['time_scale']; |
||
| 854 | $atom_structure['language'] = $this->QuicktimeLanguageLookup($atom_structure['language_id']); |
||
| 855 | if (empty($info['comments']['language']) || (!in_array($atom_structure['language'], $info['comments']['language']))) { |
||
| 856 | $info['comments']['language'][] = $atom_structure['language']; |
||
| 857 | } |
||
| 858 | break; |
||
| 859 | |||
| 860 | |||
| 861 | case 'pnot': // Preview atom |
||
| 862 | getid3_lib::ReadSequence('BigEndian2Int', $atom_structure, $atom_data, 0, |
||
| 863 | array ( |
||
| 864 | 'modification_date' => 4, // "standard Macintosh format" |
||
| 865 | 'version_number' => 2, // hardcoded: 0x00 |
||
| 866 | 'atom_type' => -4, // usually: 'PICT' |
||
| 867 | 'atom_index' => 2 // usually: 0x01 |
||
| 868 | ) |
||
| 869 | ); |
||
| 870 | $atom_structure['modification_date_unix'] = (int)($atom_structure['modification_date'] - 2082844800); // DateMac2Unix() |
||
| 871 | break; |
||
| 872 | |||
| 873 | |||
| 874 | case 'crgn': // Clipping ReGioN atom |
||
| 875 | $atom_structure['region_size'] = getid3_lib::BigEndian2Int(substr($atom_data, 0, 2)); // The Region size, Region boundary box, |
||
| 876 | $atom_structure['boundary_box'] = getid3_lib::BigEndian2Int(substr($atom_data, 2, 8)); // and Clipping region data fields |
||
| 877 | $atom_structure['clipping_data'] = substr($atom_data, 10); // constitute a QuickDraw region. |
||
| 878 | break; |
||
| 879 | |||
| 880 | |||
| 881 | case 'load': // track LOAD settings atom |
||
| 882 | getid3_lib::ReadSequence('BigEndian2Int', $atom_structure, $atom_data, 0, |
||
| 883 | array ( |
||
| 884 | 'preload_start_time' => 4, |
||
| 885 | 'preload_duration' => 4, |
||
| 886 | 'preload_flags_raw' => 4, |
||
| 887 | 'default_hints_raw' => 4 |
||
| 888 | ) |
||
| 889 | ); |
||
| 890 | |||
| 891 | $atom_structure['default_hints']['double_buffer'] = (bool)($atom_structure['default_hints_raw'] & 0x0020); |
||
| 892 | $atom_structure['default_hints']['high_quality'] = (bool)($atom_structure['default_hints_raw'] & 0x0100); |
||
| 893 | break; |
||
| 894 | |||
| 895 | |||
| 896 | case 'tmcd': // TiMe CoDe atom |
||
| 897 | case 'chap': // CHAPter list atom |
||
| 898 | case 'sync': // SYNChronization atom |
||
| 899 | case 'scpt': // tranSCriPT atom |
||
| 900 | case 'ssrc': // non-primary SouRCe atom |
||
| 901 | for ($i = 0; $i < (strlen($atom_data) % 4); $i++) { |
||
| 902 | $atom_structure['track_id'][$i] = getid3_lib::BigEndian2Int(substr($atom_data, $i * 4, 4)); |
||
| 903 | } |
||
| 904 | break; |
||
| 905 | |||
| 906 | |||
| 907 | case 'elst': // Edit LiST atom |
||
| 908 | getid3_lib::ReadSequence('BigEndian2Int', $atom_structure, $atom_data, 0, |
||
| 909 | array ( |
||
| 910 | 'version' => 1, |
||
| 911 | 'flags_raw' => 3, // hardcoded: 0x0000 |
||
| 912 | 'number_entries' => 4 |
||
| 913 | ) |
||
| 914 | ); |
||
| 915 | |||
| 916 | for ($i = 0; $i < $atom_structure['number_entries']; $i++ ) { |
||
| 917 | $atom_structure['edit_list'][$i]['track_duration'] = getid3_lib::BigEndian2Int(substr($atom_data, 8 + ($i * 12) + 0, 4)); |
||
| 918 | $atom_structure['edit_list'][$i]['media_time'] = getid3_lib::BigEndian2Int(substr($atom_data, 8 + ($i * 12) + 4, 4)); |
||
| 919 | $atom_structure['edit_list'][$i]['media_rate'] = getid3_quicktime::FixedPoint16_16(substr($atom_data, 8 + ($i * 12) + 8, 4)); |
||
| 920 | } |
||
| 921 | break; |
||
| 922 | |||
| 923 | |||
| 924 | case 'kmat': // compressed MATte atom |
||
| 925 | $atom_structure['version'] = getid3_lib::BigEndian2Int(substr($atom_data, 0, 1)); |
||
| 926 | $atom_structure['flags_raw'] = getid3_lib::BigEndian2Int(substr($atom_data, 1, 3)); // hardcoded: 0x0000 |
||
| 927 | $atom_structure['matte_data_raw'] = substr($atom_data, 4); |
||
| 928 | break; |
||
| 929 | |||
| 930 | |||
| 931 | case 'ctab': // Color TABle atom |
||
| 932 | $atom_structure['color_table_seed'] = getid3_lib::BigEndian2Int(substr($atom_data, 0, 4)); // hardcoded: 0x00000000 |
||
| 933 | $atom_structure['color_table_flags'] = getid3_lib::BigEndian2Int(substr($atom_data, 4, 2)); // hardcoded: 0x8000 |
||
| 934 | $atom_structure['color_table_size'] = getid3_lib::BigEndian2Int(substr($atom_data, 6, 2)) + 1; |
||
| 935 | for ($colortableentry = 0; $colortableentry < $atom_structure['color_table_size']; $colortableentry++) { |
||
| 936 | $atom_structure['color_table'][$colortableentry]['alpha'] = getid3_lib::BigEndian2Int(substr($atom_data, 8 + ($colortableentry * 8) + 0, 2)); |
||
| 937 | $atom_structure['color_table'][$colortableentry]['red'] = getid3_lib::BigEndian2Int(substr($atom_data, 8 + ($colortableentry * 8) + 2, 2)); |
||
| 938 | $atom_structure['color_table'][$colortableentry]['green'] = getid3_lib::BigEndian2Int(substr($atom_data, 8 + ($colortableentry * 8) + 4, 2)); |
||
| 939 | $atom_structure['color_table'][$colortableentry]['blue'] = getid3_lib::BigEndian2Int(substr($atom_data, 8 + ($colortableentry * 8) + 6, 2)); |
||
| 940 | } |
||
| 941 | break; |
||
| 942 | |||
| 943 | |||
| 944 | case 'mvhd': // MoVie HeaDer atom |
||
| 945 | getid3_lib::ReadSequence('BigEndian2Int', $atom_structure, $atom_data, 0, |
||
| 946 | array ( |
||
| 947 | 'version' => 1, |
||
| 948 | 'flags_raw' => 3, |
||
| 949 | 'creation_time' => 4, |
||
| 950 | 'modify_time' => 4, |
||
| 951 | 'time_scale' => 4, |
||
| 952 | 'duration' => 4 |
||
| 953 | ) |
||
| 954 | ); |
||
| 955 | |||
| 956 | $atom_structure['preferred_rate'] = getid3_quicktime::FixedPoint16_16(substr($atom_data, 20, 4)); |
||
| 957 | $atom_structure['preferred_volume'] = getid3_quicktime::FixedPoint8_8(substr($atom_data, 24, 2)); |
||
| 958 | $atom_structure['reserved'] = substr($atom_data, 26, 10); |
||
| 959 | $atom_structure['matrix_a'] = getid3_quicktime::FixedPoint16_16(substr($atom_data, 36, 4)); |
||
| 960 | $atom_structure['matrix_b'] = getid3_quicktime::FixedPoint16_16(substr($atom_data, 40, 4)); |
||
| 961 | $atom_structure['matrix_u'] = getid3_quicktime::FixedPoint2_30(substr($atom_data, 44, 4)); |
||
| 962 | $atom_structure['matrix_c'] = getid3_quicktime::FixedPoint16_16(substr($atom_data, 48, 4)); |
||
| 963 | $atom_structure['matrix_d'] = getid3_quicktime::FixedPoint16_16(substr($atom_data, 52, 4)); |
||
| 964 | $atom_structure['matrix_v'] = getid3_quicktime::FixedPoint2_30(substr($atom_data, 56, 4)); |
||
| 965 | $atom_structure['matrix_x'] = getid3_quicktime::FixedPoint16_16(substr($atom_data, 60, 4)); |
||
| 966 | $atom_structure['matrix_y'] = getid3_quicktime::FixedPoint16_16(substr($atom_data, 64, 4)); |
||
| 967 | $atom_structure['matrix_w'] = getid3_quicktime::FixedPoint2_30(substr($atom_data, 68, 4)); |
||
| 968 | |||
| 969 | getid3_lib::ReadSequence('BigEndian2Int', $atom_structure, $atom_data, 72, |
||
| 970 | array ( |
||
| 971 | 'preview_time' => 4, |
||
| 972 | 'preview_duration' => 4, |
||
| 973 | 'poster_time' => 4, |
||
| 974 | 'selection_time' => 4, |
||
| 975 | 'selection_duration' => 4, |
||
| 976 | 'current_time' => 4, |
||
| 977 | 'next_track_id' => 4 |
||
| 978 | ) |
||
| 979 | ); |
||
| 980 | |||
| 981 | if ($atom_structure['time_scale'] == 0) { |
||
| 982 | throw new getid3_exception('Corrupt Quicktime file: mvhd.time_scale == zero'); |
||
| 983 | } |
||
| 984 | |||
| 985 | $atom_structure['creation_time_unix'] = (int)($atom_structure['creation_time'] - 2082844800); // DateMac2Unix() |
||
| 986 | $atom_structure['modify_time_unix'] = (int)($atom_structure['modify_time'] - 2082844800); // DateMac2Unix() |
||
| 987 | $info_quicktime['time_scale'] = max(@$info['quicktime']['time_scale'], $atom_structure['time_scale']); |
||
| 988 | $info_quicktime['display_scale'] = $atom_structure['matrix_a']; |
||
| 989 | $info['playtime_seconds'] = $atom_structure['duration'] / $atom_structure['time_scale']; |
||
| 990 | break; |
||
| 991 | |||
| 992 | |||
| 993 | case 'tkhd': // TracK HeaDer atom |
||
| 994 | getid3_lib::ReadSequence('BigEndian2Int', $atom_structure, $atom_data, 0, |
||
| 995 | array ( |
||
| 996 | 'version' => 1, |
||
| 997 | 'flags_raw' => 3, |
||
| 998 | 'creation_time' => 4, |
||
| 999 | 'modify_time' => 4, |
||
| 1000 | 'trackid' => 4, |
||
| 1001 | 'reserved1' => 4, |
||
| 1002 | 'duration' => 4, |
||
| 1003 | 'reserved2' => 8, |
||
| 1004 | 'layer' => 2, |
||
| 1005 | 'alternate_group' => 2 |
||
| 1006 | ) |
||
| 1007 | ); |
||
| 1008 | |||
| 1009 | $atom_structure['volume'] = getid3_quicktime::FixedPoint8_8(substr($atom_data, 36, 2)); |
||
| 1010 | $atom_structure['reserved3'] = getid3_lib::BigEndian2Int(substr($atom_data, 38, 2)); |
||
| 1011 | $atom_structure['matrix_a'] = getid3_quicktime::FixedPoint16_16(substr($atom_data, 40, 4)); |
||
| 1012 | $atom_structure['matrix_b'] = getid3_quicktime::FixedPoint16_16(substr($atom_data, 44, 4)); |
||
| 1013 | $atom_structure['matrix_u'] = getid3_quicktime::FixedPoint16_16(substr($atom_data, 48, 4)); |
||
| 1014 | $atom_structure['matrix_c'] = getid3_quicktime::FixedPoint16_16(substr($atom_data, 52, 4)); |
||
| 1015 | $atom_structure['matrix_v'] = getid3_quicktime::FixedPoint16_16(substr($atom_data, 56, 4)); |
||
| 1016 | $atom_structure['matrix_d'] = getid3_quicktime::FixedPoint16_16(substr($atom_data, 60, 4)); |
||
| 1017 | $atom_structure['matrix_x'] = getid3_quicktime::FixedPoint2_30(substr($atom_data, 64, 4)); |
||
| 1018 | $atom_structure['matrix_y'] = getid3_quicktime::FixedPoint2_30(substr($atom_data, 68, 4)); |
||
| 1019 | $atom_structure['matrix_w'] = getid3_quicktime::FixedPoint2_30(substr($atom_data, 72, 4)); |
||
| 1020 | $atom_structure['width'] = getid3_quicktime::FixedPoint16_16(substr($atom_data, 76, 4)); |
||
| 1021 | $atom_structure['height'] = getid3_quicktime::FixedPoint16_16(substr($atom_data, 80, 4)); |
||
| 1022 | |||
| 1023 | $atom_structure['flags']['enabled'] = (bool)($atom_structure['flags_raw'] & 0x0001); |
||
| 1024 | $atom_structure['flags']['in_movie'] = (bool)($atom_structure['flags_raw'] & 0x0002); |
||
| 1025 | $atom_structure['flags']['in_preview'] = (bool)($atom_structure['flags_raw'] & 0x0004); |
||
| 1026 | $atom_structure['flags']['in_poster'] = (bool)($atom_structure['flags_raw'] & 0x0008); |
||
| 1027 | $atom_structure['creation_time_unix'] = (int)($atom_structure['creation_time'] - 2082844800); // DateMac2Unix() |
||
| 1028 | $atom_structure['modify_time_unix'] = (int)($atom_structure['modify_time'] - 2082844800); // DateMac2Unix() |
||
| 1029 | |||
| 1030 | if (!isset($info['video']['resolution_x']) || !isset($info['video']['resolution_y'])) { |
||
| 1031 | $info['video']['resolution_x'] = $atom_structure['width']; |
||
| 1032 | $info['video']['resolution_y'] = $atom_structure['height']; |
||
| 1033 | } |
||
| 1034 | |||
| 1035 | if ($atom_structure['flags']['enabled'] == 1) { |
||
| 1036 | $info['video']['resolution_x'] = max($info['video']['resolution_x'], $atom_structure['width']); |
||
| 1037 | $info['video']['resolution_y'] = max($info['video']['resolution_y'], $atom_structure['height']); |
||
| 1038 | } |
||
| 1039 | |||
| 1040 | if (!empty($info['video']['resolution_x']) && !empty($info['video']['resolution_y'])) { |
||
| 1041 | $info_quicktime['video']['resolution_x'] = $info['video']['resolution_x']; |
||
| 1042 | $info_quicktime['video']['resolution_y'] = $info['video']['resolution_y']; |
||
| 1043 | } else { |
||
| 1044 | unset($info['video']['resolution_x']); |
||
| 1045 | unset($info['video']['resolution_y']); |
||
| 1046 | unset($info_quicktime['video']); |
||
| 1047 | } |
||
| 1048 | break; |
||
| 1049 | |||
| 1050 | |||
| 1051 | case 'meta': // METAdata atom |
||
| 1052 | // http://www.geocities.com/xhelmboyx/quicktime/formats/qti-layout.txt |
||
| 1053 | $next_tag_position = strpos($atom_data, '�'); |
||
| 1054 | while ($next_tag_position < strlen($atom_data)) { |
||
| 1055 | $meta_item_size = getid3_lib::BigEndian2Int(substr($atom_data, $next_tag_position - 4, 4)) - 4; |
||
| 1056 | if ($meta_item_size == -4) { |
||
| 1057 | break; |
||
| 1058 | } |
||
| 1059 | $meta_item_raw = substr($atom_data, $next_tag_position, $meta_item_size); |
||
| 1060 | $meta_item_key = substr($meta_item_raw, 0, 4); |
||
| 1061 | $meta_item_data = substr($meta_item_raw, 20); |
||
| 1062 | $next_tag_position += $meta_item_size + 4; |
||
| 1063 | |||
| 1064 | $this->CopyToAppropriateCommentsSection($meta_item_key, $meta_item_data); |
||
| 1065 | } |
||
| 1066 | break; |
||
| 1067 | |||
| 1068 | case 'ftyp': // FileTYPe (?) atom (for MP4 it seems) |
||
| 1069 | getid3_lib::ReadSequence('BigEndian2Int', $atom_structure, $atom_data, 0, |
||
| 1070 | array ( |
||
| 1071 | 'signature' => -4, |
||
| 1072 | 'unknown_1' => 4, |
||
| 1073 | 'fourcc' => -4, |
||
| 1074 | ) |
||
| 1075 | ); |
||
| 1076 | break; |
||
| 1077 | |||
| 1078 | case 'mdat': // Media DATa atom |
||
| 1079 | case 'free': // FREE space atom |
||
| 1080 | case 'skip': // SKIP atom |
||
| 1081 | case 'wide': // 64-bit expansion placeholder atom |
||
| 1082 | // 'mdat' data is too big to deal with, contains no useful metadata |
||
| 1083 | // 'free', 'skip' and 'wide' are just padding, contains no useful data at all |
||
| 1084 | |||
| 1085 | // When writing QuickTime files, it is sometimes necessary to update an atom's size. |
||
| 1086 | // It is impossible to update a 32-bit atom to a 64-bit atom since the 32-bit atom |
||
| 1087 | // is only 8 bytes in size, and the 64-bit atom requires 16 bytes. Therefore, QuickTime |
||
| 1088 | // puts an 8-byte placeholder atom before any atoms it may have to update the size of. |
||
| 1089 | // In this way, if the atom needs to be converted from a 32-bit to a 64-bit atom, the |
||
| 1090 | // placeholder atom can be overwritten to obtain the necessary 8 extra bytes. |
||
| 1091 | // The placeholder atom has a type of kWideAtomPlaceholderType ( 'wide' ). |
||
| 1092 | break; |
||
| 1093 | |||
| 1094 | |||
| 1095 | case 'nsav': // NoSAVe atom |
||
| 1096 | // http://developer.apple.com/technotes/tn/tn2038.html |
||
| 1097 | $atom_structure['data'] = getid3_lib::BigEndian2Int(substr($atom_data, 0, 4)); |
||
| 1098 | break; |
||
| 1099 | |||
| 1100 | case 'ctyp': // Controller TYPe atom (seen on QTVR) |
||
| 1101 | // http://homepages.slingshot.co.nz/~helmboy/quicktime/formats/qtm-layout.txt |
||
| 1102 | // some controller names are: |
||
| 1103 | // 0x00 + 'std' for linear movie |
||
| 1104 | // 'none' for no controls |
||
| 1105 | $atom_structure['ctyp'] = substr($atom_data, 0, 4); |
||
| 1106 | switch ($atom_structure['ctyp']) { |
||
| 1107 | case 'qtvr': |
||
| 1108 | $info['video']['dataformat'] = 'quicktimevr'; |
||
| 1109 | break; |
||
| 1110 | } |
||
| 1111 | break; |
||
| 1112 | |||
| 1113 | case 'pano': // PANOrama track (seen on QTVR) |
||
| 1114 | $atom_structure['pano'] = getid3_lib::BigEndian2Int(substr($atom_data, 0, 4)); |
||
| 1115 | break; |
||
| 1116 | |||
| 1117 | case 'hint': // HINT track |
||
| 1118 | case 'hinf': // |
||
| 1119 | case 'hinv': // |
||
| 1120 | case 'hnti': // |
||
| 1121 | $info['quicktime']['hinting'] = true; |
||
| 1122 | break; |
||
| 1123 | |||
| 1124 | case 'imgt': // IMaGe Track reference (kQTVRImageTrackRefType) (seen on QTVR) |
||
| 1125 | for ($i = 0; $i < ($atom_structure['size'] - 8); $i += 4) { |
||
| 1126 | $atom_structure['imgt'][] = getid3_lib::BigEndian2Int(substr($atom_data, $i, 4)); |
||
| 1127 | } |
||
| 1128 | break; |
||
| 1129 | |||
| 1130 | case 'FXTC': // Something to do with Adobe After Effects (?) |
||
| 1131 | case 'PrmA': |
||
| 1132 | case 'code': |
||
| 1133 | case 'FIEL': // this is NOT "fiel" (Field Ordering) as describe here: http://developer.apple.com/documentation/QuickTime/QTFF/QTFFChap3/chapter_4_section_2.html |
||
| 1134 | // Observed-but-not-handled atom types are just listed here |
||
| 1135 | // to prevent warnings being generated |
||
| 1136 | $atom_structure['data'] = $atom_data; |
||
| 1137 | break; |
||
| 1138 | |||
| 1139 | default: |
||
| 1140 | $getid3->warning('Unknown QuickTime atom type: "'.$atom_name.'" at offset '.$base_offset); |
||
| 1141 | $atom_structure['data'] = $atom_data; |
||
| 1142 | break; |
||
| 1143 | } |
||
| 1144 | array_pop($atom_hierarchy); |
||
| 1145 | return $atom_structure; |
||
| 1146 | } |
||
| 1147 | |||
| 1148 | |||
| 1149 | |||
| 1150 | private function QuicktimeParseContainerAtom($atom_data, $base_offset, &$atom_hierarchy) { |
||
| 1151 | |||
| 1152 | if ((strlen($atom_data) == 4) && (getid3_lib::BigEndian2Int($atom_data) == 0x00000000)) { |
||
| 1153 | return false; |
||
| 1154 | } |
||
| 1155 | |||
| 1156 | $atom_structure = false; |
||
| 1157 | $subatom_offset = 0; |
||
| 1158 | |||
| 1159 | while ($subatom_offset < strlen($atom_data)) { |
||
| 1160 | |||
| 1161 | $subatom_size = getid3_lib::BigEndian2Int(substr($atom_data, $subatom_offset + 0, 4)); |
||
| 1162 | $subatom_name = substr($atom_data, $subatom_offset + 4, 4); |
||
| 1163 | $subatom_data = substr($atom_data, $subatom_offset + 8, $subatom_size - 8); |
||
| 1164 | |||
| 1165 | if ($subatom_size == 0) { |
||
| 1166 | // Furthermore, for historical reasons the list of atoms is optionally |
||
| 1167 | // terminated by a 32-bit integer set to 0. If you are writing a program |
||
| 1168 | // to read user data atoms, you should allow for the terminating 0. |
||
| 1169 | return $atom_structure; |
||
| 1170 | } |
||
| 1171 | |||
| 1172 | $atom_structure[] = $this->QuicktimeParseAtom($subatom_name, $subatom_size, $subatom_data, $base_offset + $subatom_offset, $atom_hierarchy); |
||
| 1173 | |||
| 1174 | $subatom_offset += $subatom_size; |
||
| 1175 | } |
||
| 1176 | return $atom_structure; |
||
| 1177 | } |
||
| 1178 | |||
| 1179 | |||
| 1180 | |||
| 1181 | private function CopyToAppropriateCommentsSection($key_name, $data) { |
||
| 1182 | |||
| 1183 | // http://www.geocities.com/xhelmboyx/quicktime/formats/qtm-layout.txt |
||
| 1184 | |||
| 1185 | static $translator = array ( |
||
| 1186 | '�cpy' => 'copyright', |
||
| 1187 | '�day' => 'creation_date', |
||
| 1188 | '�dir' => 'director', |
||
| 1189 | '�ed1' => 'edit1', |
||
| 1190 | '�ed2' => 'edit2', |
||
| 1191 | '�ed3' => 'edit3', |
||
| 1192 | '�ed4' => 'edit4', |
||
| 1193 | '�ed5' => 'edit5', |
||
| 1194 | '�ed6' => 'edit6', |
||
| 1195 | '�ed7' => 'edit7', |
||
| 1196 | '�ed8' => 'edit8', |
||
| 1197 | '�ed9' => 'edit9', |
||
| 1198 | '�fmt' => 'format', |
||
| 1199 | '�inf' => 'information', |
||
| 1200 | '�prd' => 'producer', |
||
| 1201 | '�prf' => 'performers', |
||
| 1202 | '�req' => 'system_requirements', |
||
| 1203 | '�src' => 'source_credit', |
||
| 1204 | '�wrt' => 'writer', |
||
| 1205 | '�nam' => 'title', |
||
| 1206 | '�cmt' => 'comment', |
||
| 1207 | '�wrn' => 'warning', |
||
| 1208 | '�hst' => 'host_computer', |
||
| 1209 | '�mak' => 'make', |
||
| 1210 | '�mod' => 'model', |
||
| 1211 | '�PRD' => 'product', |
||
| 1212 | '�swr' => 'software', |
||
| 1213 | '�aut' => 'author', |
||
| 1214 | '�ART' => 'artist', |
||
| 1215 | '�trk' => 'track', |
||
| 1216 | '�alb' => 'album', |
||
| 1217 | '�com' => 'comment', |
||
| 1218 | '�gen' => 'genre', |
||
| 1219 | '�ope' => 'composer', |
||
| 1220 | '�url' => 'url', |
||
| 1221 | '�enc' => 'encoder' |
||
| 1222 | ); |
||
| 1223 | |||
| 1224 | if (isset($translator[$key_name])) { |
||
| 1225 | $this->getid3->info['quicktime']['comments'][$translator[$key_name]][] = $data; |
||
| 1226 | } |
||
| 1227 | |||
| 1228 | return true; |
||
| 1229 | } |
||
| 1230 | |||
| 1231 | |||
| 1232 | |||
| 1233 | public static function QuicktimeLanguageLookup($language_id) { |
||
| 1349 | } |
||
| 1350 | |||
| 1351 | |||
| 1352 | |||
| 1353 | public static function QuicktimeVideoCodecLookup($codec_id) { |
||
| 1354 | |||
| 1355 | static $lookup = array ( |
||
| 1356 | '3IVX' => '3ivx MPEG-4', |
||
| 1357 | '3IV1' => '3ivx MPEG-4 v1', |
||
| 1358 | '3IV2' => '3ivx MPEG-4 v2', |
||
| 1359 | 'avr ' => 'AVR-JPEG', |
||
| 1360 | 'base' => 'Base', |
||
| 1361 | 'WRLE' => 'BMP', |
||
| 1362 | 'cvid' => 'Cinepak', |
||
| 1363 | 'clou' => 'Cloud', |
||
| 1364 | 'cmyk' => 'CMYK', |
||
| 1365 | 'yuv2' => 'ComponentVideo', |
||
| 1366 | 'yuvu' => 'ComponentVideoSigned', |
||
| 1367 | 'yuvs' => 'ComponentVideoUnsigned', |
||
| 1368 | 'dvc ' => 'DVC-NTSC', |
||
| 1369 | 'dvcp' => 'DVC-PAL', |
||
| 1370 | 'dvpn' => 'DVCPro-NTSC', |
||
| 1371 | 'dvpp' => 'DVCPro-PAL', |
||
| 1372 | 'fire' => 'Fire', |
||
| 1373 | 'flic' => 'FLC', |
||
| 1374 | 'b48r' => '48RGB', |
||
| 1375 | 'gif ' => 'GIF', |
||
| 1376 | 'smc ' => 'Graphics', |
||
| 1377 | 'h261' => 'H261', |
||
| 1378 | 'h263' => 'H263', |
||
| 1379 | 'IV41' => 'Indeo4', |
||
| 1380 | 'jpeg' => 'JPEG', |
||
| 1381 | 'PNTG' => 'MacPaint', |
||
| 1382 | 'msvc' => 'Microsoft Video1', |
||
| 1383 | 'mjpa' => 'Motion JPEG-A', |
||
| 1384 | 'mjpb' => 'Motion JPEG-B', |
||
| 1385 | 'myuv' => 'MPEG YUV420', |
||
| 1386 | 'dmb1' => 'OpenDML JPEG', |
||
| 1387 | 'kpcd' => 'PhotoCD', |
||
| 1388 | '8BPS' => 'Planar RGB', |
||
| 1389 | 'png ' => 'PNG', |
||
| 1390 | 'qdrw' => 'QuickDraw', |
||
| 1391 | 'qdgx' => 'QuickDrawGX', |
||
| 1392 | 'raw ' => 'RAW', |
||
| 1393 | '.SGI' => 'SGI', |
||
| 1394 | 'b16g' => '16Gray', |
||
| 1395 | 'b64a' => '64ARGB', |
||
| 1396 | 'SVQ1' => 'Sorenson Video 1', |
||
| 1397 | 'SVQ1' => 'Sorenson Video 3', |
||
| 1398 | 'syv9' => 'Sorenson YUV9', |
||
| 1399 | 'tga ' => 'Targa', |
||
| 1400 | 'b32a' => '32AlphaGray', |
||
| 1401 | 'tiff' => 'TIFF', |
||
| 1402 | 'path' => 'Vector', |
||
| 1403 | 'rpza' => 'Video', |
||
| 1404 | 'ripl' => 'WaterRipple', |
||
| 1405 | 'WRAW' => 'Windows RAW', |
||
| 1406 | 'y420' => 'YUV420' |
||
| 1407 | ); |
||
| 1408 | |||
| 1409 | return (isset($lookup[$codec_id]) ? $lookup[$codec_id] : ''); |
||
| 1410 | } |
||
| 1411 | |||
| 1412 | |||
| 1413 | |||
| 1414 | public static function QuicktimeAudioCodecLookup($codec_id) { |
||
| 1415 | |||
| 1416 | static $lookup = array ( |
||
| 1417 | '.mp3' => 'Fraunhofer MPEG Layer-III alias', |
||
| 1418 | 'aac ' => 'ISO/IEC 14496-3 AAC', |
||
| 1419 | 'agsm' => 'Apple GSM 10:1', |
||
| 1420 | 'alac' => 'Apple Lossless Audio Codec', |
||
| 1421 | 'alaw' => 'A-law 2:1', |
||
| 1422 | 'conv' => 'Sample Format', |
||
| 1423 | 'dvca' => 'DV', |
||
| 1424 | 'dvi ' => 'DV 4:1', |
||
| 1425 | 'eqal' => 'Frequency Equalizer', |
||
| 1426 | 'fl32' => '32-bit Floating Point', |
||
| 1427 | 'fl64' => '64-bit Floating Point', |
||
| 1428 | 'ima4' => 'Interactive Multimedia Association 4:1', |
||
| 1429 | 'in24' => '24-bit Integer', |
||
| 1430 | 'in32' => '32-bit Integer', |
||
| 1431 | 'lpc ' => 'LPC 23:1', |
||
| 1432 | 'MAC3' => 'Macintosh Audio Compression/Expansion (MACE) 3:1', |
||
| 1433 | 'MAC6' => 'Macintosh Audio Compression/Expansion (MACE) 6:1', |
||
| 1434 | 'mixb' => '8-bit Mixer', |
||
| 1435 | 'mixw' => '16-bit Mixer', |
||
| 1436 | 'mp4a' => 'ISO/IEC 14496-3 AAC', |
||
| 1437 | "MS'\x00\x02" => 'Microsoft ADPCM', |
||
| 1438 | "MS'\x00\x11" => 'DV IMA', |
||
| 1439 | "MS\x00\x55" => 'Fraunhofer MPEG Layer III', |
||
| 1440 | 'NONE' => 'No Encoding', |
||
| 1441 | 'Qclp' => 'Qualcomm PureVoice', |
||
| 1442 | 'QDM2' => 'QDesign Music 2', |
||
| 1443 | 'QDMC' => 'QDesign Music 1', |
||
| 1444 | 'ratb' => '8-bit Rate', |
||
| 1445 | 'ratw' => '16-bit Rate', |
||
| 1446 | 'raw ' => 'raw PCM', |
||
| 1447 | 'sour' => 'Sound Source', |
||
| 1448 | 'sowt' => 'signed/two\'s complement (Little Endian)', |
||
| 1449 | 'str1' => 'Iomega MPEG layer II', |
||
| 1450 | 'str2' => 'Iomega MPEG *layer II', |
||
| 1451 | 'str3' => 'Iomega MPEG **layer II', |
||
| 1452 | 'str4' => 'Iomega MPEG ***layer II', |
||
| 1453 | 'twos' => 'signed/two\'s complement (Big Endian)', |
||
| 1454 | 'ulaw' => 'mu-law 2:1', |
||
| 1455 | ); |
||
| 1456 | |||
| 1457 | return (isset($lookup[$codec_id]) ? $lookup[$codec_id] : ''); |
||
| 1458 | } |
||
| 1459 | |||
| 1460 | |||
| 1461 | |||
| 1462 | public static function QuicktimeDCOMLookup($compression_id) { |
||
| 1463 | |||
| 1464 | static $lookup = array ( |
||
| 1465 | 'zlib' => 'ZLib Deflate', |
||
| 1466 | 'adec' => 'Apple Compression' |
||
| 1467 | ); |
||
| 1468 | |||
| 1469 | return (isset($lookup[$compression_id]) ? $lookup[$compression_id] : ''); |
||
| 1470 | } |
||
| 1471 | |||
| 1472 | |||
| 1473 | |||
| 1474 | public static function QuicktimeColorNameLookup($color_depth_id) { |
||
| 1475 | |||
| 1476 | static $lookup = array ( |
||
| 1477 | 1 => '2-color (monochrome)', |
||
| 1478 | 2 => '4-color', |
||
| 1479 | 4 => '16-color', |
||
| 1480 | 8 => '256-color', |
||
| 1481 | 16 => 'thousands (16-bit color)', |
||
| 1482 | 24 => 'millions (24-bit color)', |
||
| 1483 | 32 => 'millions+ (32-bit color)', |
||
| 1484 | 33 => 'black & white', |
||
| 1485 | 34 => '4-gray', |
||
| 1486 | 36 => '16-gray', |
||
| 1487 | 40 => '256-gray', |
||
| 1488 | ); |
||
| 1489 | |||
| 1490 | return (isset($lookup[$color_depth_id]) ? $lookup[$color_depth_id] : 'invalid'); |
||
| 1491 | } |
||
| 1492 | |||
| 1493 | |||
| 1494 | |||
| 1495 | public static function NoNullString($null_terminated_string) { |
||
| 1503 | } |
||
| 1504 | |||
| 1505 | |||
| 1506 | |||
| 1507 | public static function FixedPoint8_8($raw_data) { |
||
| 1510 | } |
||
| 1511 | |||
| 1512 | |||
| 1513 | |||
| 1514 | public static function FixedPoint16_16($raw_data) { |
||
| 1517 | } |
||
| 1518 | |||
| 1519 | |||
| 1520 | |||
| 1521 | public static function FixedPoint2_30($raw_data) { |
||
| 1525 | } |
||
| 1526 | |||
| 1527 | } |
||
| 1528 | |||
| 1529 | ?> |
||
Loading history...
If an expression can have both
false, andnullas possible values. It is generally a good practice to always use strict comparison to clearly distinguish between those two values.