Timers WIP

Added getID3

1 files changed, 125 insertions, 0 deletions

diff --git a/getid3/module.audio.avr.php b/getid3/module.audio.avr.php
new file mode 100644
index 0000000..6099439
--- /dev/null
+++ b/getid3/module.audio.avr.php
@@ -0,0 +1,125 @@
+<?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
+{
+
+	function getid3_avr(&$fd, &$ThisFileInfo) {
+
+		// 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
+
+		$ThisFileInfo['fileformat'] = 'avr';
+
+		fseek($fd, $ThisFileInfo['avdataoffset'], SEEK_SET);
+		$AVRheader = fread($fd, 128);
+
+		$ThisFileInfo['avr']['raw']['magic']    =               substr($AVRheader,  0,  4);
+		if ($ThisFileInfo['avr']['raw']['magic'] != '2BIT') {
+			$ThisFileInfo['error'][] = 'Expecting "2BIT" at offset '.$ThisFileInfo['avdataoffset'].', found "'.$ThisFileInfo['avr']['raw']['magic'].'"';
+			unset($ThisFileInfo['fileformat']);
+			unset($ThisFileInfo['avr']);
+			return false;
+		}
+		$ThisFileInfo['avdataoffset'] += 128;
+
+		$ThisFileInfo['avr']['sample_name']        =         rtrim(substr($AVRheader,  4,  8));
+		$ThisFileInfo['avr']['raw']['mono']        = getid3_lib::BigEndian2Int(substr($AVRheader, 12,  2));
+		$ThisFileInfo['avr']['bits_per_sample']    = getid3_lib::BigEndian2Int(substr($AVRheader, 14,  2));
+		$ThisFileInfo['avr']['raw']['signed']      = getid3_lib::BigEndian2Int(substr($AVRheader, 16,  2));
+		$ThisFileInfo['avr']['raw']['loop']        = getid3_lib::BigEndian2Int(substr($AVRheader, 18,  2));
+		$ThisFileInfo['avr']['raw']['midi']        = getid3_lib::BigEndian2Int(substr($AVRheader, 20,  2));
+		$ThisFileInfo['avr']['raw']['replay_freq'] = getid3_lib::BigEndian2Int(substr($AVRheader, 22,  1));
+		$ThisFileInfo['avr']['sample_rate']        = getid3_lib::BigEndian2Int(substr($AVRheader, 23,  3));
+		$ThisFileInfo['avr']['sample_length']      = getid3_lib::BigEndian2Int(substr($AVRheader, 26,  4));
+		$ThisFileInfo['avr']['loop_start']         = getid3_lib::BigEndian2Int(substr($AVRheader, 30,  4));
+		$ThisFileInfo['avr']['loop_end']           = getid3_lib::BigEndian2Int(substr($AVRheader, 34,  4));
+		$ThisFileInfo['avr']['midi_split']         = getid3_lib::BigEndian2Int(substr($AVRheader, 38,  2));
+		$ThisFileInfo['avr']['sample_compression'] = getid3_lib::BigEndian2Int(substr($AVRheader, 40,  2));
+		$ThisFileInfo['avr']['reserved']           = getid3_lib::BigEndian2Int(substr($AVRheader, 42,  2));
+		$ThisFileInfo['avr']['sample_name_extra']  =         rtrim(substr($AVRheader, 44, 20));
+		$ThisFileInfo['avr']['comment']            =         rtrim(substr($AVRheader, 64, 64));
+
+		$ThisFileInfo['avr']['flags']['stereo'] = (($ThisFileInfo['avr']['raw']['mono']   == 0) ? false : true);
+		$ThisFileInfo['avr']['flags']['signed'] = (($ThisFileInfo['avr']['raw']['signed'] == 0) ? false : true);
+		$ThisFileInfo['avr']['flags']['loop']   = (($ThisFileInfo['avr']['raw']['loop']   == 0) ? false : true);
+
+		$ThisFileInfo['avr']['midi_notes'] = array();
+		if (($ThisFileInfo['avr']['raw']['midi'] & 0xFF00) != 0xFF00) {
+			$ThisFileInfo['avr']['midi_notes'][] = ($ThisFileInfo['avr']['raw']['midi'] & 0xFF00) >> 8;
+		}
+		if (($ThisFileInfo['avr']['raw']['midi'] & 0x00FF) != 0x00FF) {
+			$ThisFileInfo['avr']['midi_notes'][] = ($ThisFileInfo['avr']['raw']['midi'] & 0x00FF);
+		}
+
+		if (($ThisFileInfo['avdataend'] - $ThisFileInfo['avdataoffset']) != ($ThisFileInfo['avr']['sample_length'] * (($ThisFileInfo['avr']['bits_per_sample'] == 8) ? 1 : 2))) {
+			$ThisFileInfo['warning'][] = 'Probable truncated file: expecting '.($ThisFileInfo['avr']['sample_length'] * (($ThisFileInfo['avr']['bits_per_sample'] == 8) ? 1 : 2)).' bytes of audio data, found '.($ThisFileInfo['avdataend'] - $ThisFileInfo['avdataoffset']);
+		}
+
+		$ThisFileInfo['audio']['dataformat']      = 'avr';
+		$ThisFileInfo['audio']['lossless']        = true;
+		$ThisFileInfo['audio']['bitrate_mode']    = 'cbr';
+		$ThisFileInfo['audio']['bits_per_sample'] = $ThisFileInfo['avr']['bits_per_sample'];
+		$ThisFileInfo['audio']['sample_rate']     = $ThisFileInfo['avr']['sample_rate'];
+		$ThisFileInfo['audio']['channels']        = ($ThisFileInfo['avr']['flags']['stereo'] ? 2 : 1);
+		$ThisFileInfo['playtime_seconds']         = ($ThisFileInfo['avr']['sample_length'] / $ThisFileInfo['audio']['channels']) / $ThisFileInfo['avr']['sample_rate'];
+		$ThisFileInfo['audio']['bitrate']         = ($ThisFileInfo['avr']['sample_length'] * (($ThisFileInfo['avr']['bits_per_sample'] == 8) ? 8 : 16)) / $ThisFileInfo['playtime_seconds'];
+
+
+		return true;
+	}
+
+}
+
+
+?>
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