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authorGeorg Ehrke <dev@georgswebsite.de>2012-10-28 10:48:08 +0100
committerGeorg Ehrke <dev@georgswebsite.de>2012-10-28 10:48:08 +0100
commita2bbc1b3173d7e4106a27e7a99d61bea10ba6181 (patch)
tree777568a01b0c0a117cc2b89ee7c396f20eb7b49c /3rdparty/getid3/module.audio.avr.php
parent5245e2b6beb971842c9760476372cef41a5d9a17 (diff)
downloadnextcloud-server-a2bbc1b3173d7e4106a27e7a99d61bea10ba6181.tar.gz
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remove 3rdparty files
Diffstat (limited to '3rdparty/getid3/module.audio.avr.php')
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diff --git a/3rdparty/getid3/module.audio.avr.php b/3rdparty/getid3/module.audio.avr.php
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-<?php
-/////////////////////////////////////////////////////////////////
-/// getID3() by James Heinrich <info@getid3.org> //
-// available at http://getid3.sourceforge.net //
-// or http://www.getid3.org //
-/////////////////////////////////////////////////////////////////
-// See readme.txt for more details //
-/////////////////////////////////////////////////////////////////
-// //
-// module.audio.avr.php //
-// module for analyzing AVR Audio files //
-// dependencies: NONE //
-// ///
-/////////////////////////////////////////////////////////////////
-
-
-class getid3_avr extends getid3_handler
-{
-
- function Analyze() {
- $info = &$this->getid3->info;
-
- // http://cui.unige.ch/OSG/info/AudioFormats/ap11.html
- // http://www.btinternet.com/~AnthonyJ/Atari/programming/avr_format.html
- // offset type length name comments
- // ---------------------------------------------------------------------
- // 0 char 4 ID format ID == "2BIT"
- // 4 char 8 name sample name (unused space filled with 0)
- // 12 short 1 mono/stereo 0=mono, -1 (0xFFFF)=stereo
- // With stereo, samples are alternated,
- // the first voice is the left :
- // (LRLRLRLRLRLRLRLRLR...)
- // 14 short 1 resolution 8, 12 or 16 (bits)
- // 16 short 1 signed or not 0=unsigned, -1 (0xFFFF)=signed
- // 18 short 1 loop or not 0=no loop, -1 (0xFFFF)=loop on
- // 20 short 1 MIDI note 0xFFnn, where 0 <= nn <= 127
- // 0xFFFF means "no MIDI note defined"
- // 22 byte 1 Replay speed Frequence in the Replay software
- // 0=5.485 Khz, 1=8.084 Khz, 2=10.971 Khz,
- // 3=16.168 Khz, 4=21.942 Khz, 5=32.336 Khz
- // 6=43.885 Khz, 7=47.261 Khz
- // -1 (0xFF)=no defined Frequence
- // 23 byte 3 sample rate in Hertz
- // 26 long 1 size in bytes (2 * bytes in stereo)
- // 30 long 1 loop begin 0 for no loop
- // 34 long 1 loop size equal to 'size' for no loop
- // 38 short 2 Reserved, MIDI keyboard split */
- // 40 short 2 Reserved, sample compression */
- // 42 short 2 Reserved */
- // 44 char 20; Additional filename space, used if (name[7] != 0)
- // 64 byte 64 user data
- // 128 bytes ? sample data (12 bits samples are coded on 16 bits:
- // 0000 xxxx xxxx xxxx)
- // ---------------------------------------------------------------------
-
- // Note that all values are in motorola (big-endian) format, and that long is
- // assumed to be 4 bytes, and short 2 bytes.
- // When reading the samples, you should handle both signed and unsigned data,
- // and be prepared to convert 16->8 bit, or mono->stereo if needed. To convert
- // 8-bit data between signed/unsigned just add 127 to the sample values.
- // Simularly for 16-bit data you should add 32769
-
- $info['fileformat'] = 'avr';
-
- fseek($this->getid3->fp, $info['avdataoffset'], SEEK_SET);
- $AVRheader = fread($this->getid3->fp, 128);
-
- $info['avr']['raw']['magic'] = substr($AVRheader, 0, 4);
- $magic = '2BIT';
- if ($info['avr']['raw']['magic'] != $magic) {
- $info['error'][] = 'Expecting "'.getid3_lib::PrintHexBytes($magic).'" at offset '.$info['avdataoffset'].', found "'.getid3_lib::PrintHexBytes($info['avr']['raw']['magic']).'"';
- unset($info['fileformat']);
- unset($info['avr']);
- return false;
- }
- $info['avdataoffset'] += 128;
-
- $info['avr']['sample_name'] = rtrim(substr($AVRheader, 4, 8));
- $info['avr']['raw']['mono'] = getid3_lib::BigEndian2Int(substr($AVRheader, 12, 2));
- $info['avr']['bits_per_sample'] = getid3_lib::BigEndian2Int(substr($AVRheader, 14, 2));
- $info['avr']['raw']['signed'] = getid3_lib::BigEndian2Int(substr($AVRheader, 16, 2));
- $info['avr']['raw']['loop'] = getid3_lib::BigEndian2Int(substr($AVRheader, 18, 2));
- $info['avr']['raw']['midi'] = getid3_lib::BigEndian2Int(substr($AVRheader, 20, 2));
- $info['avr']['raw']['replay_freq'] = getid3_lib::BigEndian2Int(substr($AVRheader, 22, 1));
- $info['avr']['sample_rate'] = getid3_lib::BigEndian2Int(substr($AVRheader, 23, 3));
- $info['avr']['sample_length'] = getid3_lib::BigEndian2Int(substr($AVRheader, 26, 4));
- $info['avr']['loop_start'] = getid3_lib::BigEndian2Int(substr($AVRheader, 30, 4));
- $info['avr']['loop_end'] = getid3_lib::BigEndian2Int(substr($AVRheader, 34, 4));
- $info['avr']['midi_split'] = getid3_lib::BigEndian2Int(substr($AVRheader, 38, 2));
- $info['avr']['sample_compression'] = getid3_lib::BigEndian2Int(substr($AVRheader, 40, 2));
- $info['avr']['reserved'] = getid3_lib::BigEndian2Int(substr($AVRheader, 42, 2));
- $info['avr']['sample_name_extra'] = rtrim(substr($AVRheader, 44, 20));
- $info['avr']['comment'] = rtrim(substr($AVRheader, 64, 64));
-
- $info['avr']['flags']['stereo'] = (($info['avr']['raw']['mono'] == 0) ? false : true);
- $info['avr']['flags']['signed'] = (($info['avr']['raw']['signed'] == 0) ? false : true);
- $info['avr']['flags']['loop'] = (($info['avr']['raw']['loop'] == 0) ? false : true);
-
- $info['avr']['midi_notes'] = array();
- if (($info['avr']['raw']['midi'] & 0xFF00) != 0xFF00) {
- $info['avr']['midi_notes'][] = ($info['avr']['raw']['midi'] & 0xFF00) >> 8;
- }
- if (($info['avr']['raw']['midi'] & 0x00FF) != 0x00FF) {
- $info['avr']['midi_notes'][] = ($info['avr']['raw']['midi'] & 0x00FF);
- }
-
- if (($info['avdataend'] - $info['avdataoffset']) != ($info['avr']['sample_length'] * (($info['avr']['bits_per_sample'] == 8) ? 1 : 2))) {
- $info['warning'][] = 'Probable truncated file: expecting '.($info['avr']['sample_length'] * (($info['avr']['bits_per_sample'] == 8) ? 1 : 2)).' bytes of audio data, found '.($info['avdataend'] - $info['avdataoffset']);
- }
-
- $info['audio']['dataformat'] = 'avr';
- $info['audio']['lossless'] = true;
- $info['audio']['bitrate_mode'] = 'cbr';
- $info['audio']['bits_per_sample'] = $info['avr']['bits_per_sample'];
- $info['audio']['sample_rate'] = $info['avr']['sample_rate'];
- $info['audio']['channels'] = ($info['avr']['flags']['stereo'] ? 2 : 1);
- $info['playtime_seconds'] = ($info['avr']['sample_length'] / $info['audio']['channels']) / $info['avr']['sample_rate'];
- $info['audio']['bitrate'] = ($info['avr']['sample_length'] * (($info['avr']['bits_per_sample'] == 8) ? 8 : 16)) / $info['playtime_seconds'];
-
-
- return true;
- }
-
-}
-
-
-?> \ No newline at end of file