getid3_ts Class Reference
getID3() by James Heinrich info@.nosp@m.geti.nosp@m.d3.or.nosp@m.g // More...
Inheritance diagram for getid3_ts:
Collaboration diagram for getid3_ts:
Public Member Functions | |
| Analyze () | |
| TSscramblingControlLookup ($raw) | |
| Public Member Functions inherited from getid3_handler | |
| __construct (getID3 $getid3, $call_module=null) | |
| Analyze () | |
| AnalyzeString ($string) | |
| setStringMode ($string) | |
| saveAttachment ($name, $offset, $length, $image_mime=null) | |
Additional Inherited Members | |
| Protected Member Functions inherited from getid3_handler | |
| ftell () | |
| fread ($bytes) | |
| fseek ($bytes, $whence=SEEK_SET) | |
| feof () | |
| isDependencyFor ($module) | |
| error ($text) | |
| warning ($text) | |
| notice ($text) | |
| Protected Attributes inherited from getid3_handler | |
| $getid3 | |
| $data_string_flag = false | |
| $data_string = '' | |
| $data_string_position = 0 | |
| $data_string_length = 0 | |
Detailed Description
getID3() by James Heinrich info@.nosp@m.geti.nosp@m.d3.or.nosp@m.g //
Definition at line 18 of file module.audio-video.ts.php.
Member Function Documentation
◆ Analyze()
| getid3_ts::Analyze | ( | ) |
Reimplemented from getid3_handler.
Definition at line 21 of file module.audio-video.ts.php.
21 {
22 $info = &$this->getid3->info;
23
25 $TSheader = $this->fread(19);
26 $magic = "\x47";
27 if (substr($TSheader, 0, 1) != $magic) {
28 $info['error'][] = 'Expecting "'.getid3_lib::PrintHexBytes($magic).'" at '.$info['avdataoffset'].', found '.getid3_lib::PrintHexBytes(substr($TSheader, 0, 1)).' instead.';
29 return false;
30 }
32
33 // http://en.wikipedia.org/wiki/.ts
34
35 $offset = 0;
36 $info['ts']['packet']['sync'] = getid3_lib::BigEndian2Int(substr($TSheader, $offset, 1)); $offset += 1;
37 $pid_flags_raw = getid3_lib::BigEndian2Int(substr($TSheader, $offset, 2)); $offset += 2;
38 $SAC_raw = getid3_lib::BigEndian2Int(substr($TSheader, $offset, 1)); $offset += 1;
39 $info['ts']['packet']['flags']['transport_error_indicator'] = (bool) ($pid_flags_raw & 0x8000); // Set by demodulator if can't correct errors in the stream, to tell the demultiplexer that the packet has an uncorrectable error
40 $info['ts']['packet']['flags']['payload_unit_start_indicator'] = (bool) ($pid_flags_raw & 0x4000); // 1 means start of PES data or PSI otherwise zero only.
41 $info['ts']['packet']['flags']['transport_high_priority'] = (bool) ($pid_flags_raw & 0x2000); // 1 means higher priority than other packets with the same PID.
43
47 $info['ts']['packet']['continuity_counter'] = ($SAC_raw & 0x0F) >> 0; // Incremented only when a payload is present
48 $info['ts']['packet']['scrambling_control'] = $this->TSscramblingControlLookup($info['ts']['packet']['raw']['scrambling_control']);
49
51 $AdaptionField_raw = getid3_lib::BigEndian2Int(substr($TSheader, $offset, 2)); $offset += 2;
52 $info['ts']['packet']['adaption']['field_length'] = ($AdaptionField_raw & 0xFF00) >> 8; // Number of bytes in the adaptation field immediately following this byte
53 $info['ts']['packet']['adaption']['flags']['discontinuity'] = (bool) ($AdaptionField_raw & 0x0080); // Set to 1 if current TS packet is in a discontinuity state with respect to either the continuity counter or the program clock reference
54 $info['ts']['packet']['adaption']['flags']['random_access'] = (bool) ($AdaptionField_raw & 0x0040); // Set to 1 if the PES packet in this TS packet starts a video/audio sequence
55 $info['ts']['packet']['adaption']['flags']['high_priority'] = (bool) ($AdaptionField_raw & 0x0020); // 1 = higher priority
56 $info['ts']['packet']['adaption']['flags']['pcr'] = (bool) ($AdaptionField_raw & 0x0010); // 1 means adaptation field does contain a PCR field
57 $info['ts']['packet']['adaption']['flags']['opcr'] = (bool) ($AdaptionField_raw & 0x0008); // 1 means adaptation field does contain an OPCR field
58 $info['ts']['packet']['adaption']['flags']['splice_point'] = (bool) ($AdaptionField_raw & 0x0004); // 1 means presence of splice countdown field in adaptation field
59 $info['ts']['packet']['adaption']['flags']['private_data'] = (bool) ($AdaptionField_raw & 0x0002); // 1 means presence of private data bytes in adaptation field
60 $info['ts']['packet']['adaption']['flags']['extension'] = (bool) ($AdaptionField_raw & 0x0001); // 1 means presence of adaptation field extension
62 $info['ts']['packet']['adaption']['raw']['pcr'] = getid3_lib::BigEndian2Int(substr($TSheader, $offset, 6)); $offset += 6;
63 }
65 $info['ts']['packet']['adaption']['raw']['opcr'] = getid3_lib::BigEndian2Int(substr($TSheader, $offset, 6)); $offset += 6;
66 }
67 }
68
69$info['error'][] = 'MPEG Transport Stream (.ts) parsing not enabled in this version of getID3() ['.$this->getid3->version().']';
70return false;
71
72 }
BigEndian2Int($byteword, $synchsafe=false, $signed=false)
Definition: getid3.lib.php:234
PrintHexBytes($string, $hex=true, $spaces=true, $htmlsafe=true)
Definition: getid3.lib.php:17
TSscramblingControlLookup($raw)
Definition: module.audio-video.ts.php:75
References $info, getid3_lib\BigEndian2Int(), getid3_handler\fread(), getid3_handler\fseek(), getid3_lib\PrintHexBytes(), and TSscramblingControlLookup().
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◆ TSscramblingControlLookup()
| getid3_ts::TSscramblingControlLookup | ( | $raw | ) |
Definition at line 75 of file module.audio-video.ts.php.
75 {
76 $TSscramblingControlLookup = array(0x00=>'not scrambled', 0x01=>'reserved', 0x02=>'scrambled, even key', 0x03=>'scrambled, odd key');
77 return (isset($TSscramblingControlLookup[$raw]) ? $TSscramblingControlLookup[$raw] : 'invalid');
78 }
Referenced by Analyze().
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The documentation for this class was generated from the following file:
- Services/MediaObjects/lib/getID3-1.9.10/getid3/module.audio-video.ts.php
