New Jquery branch. Initial development version for istreamdev 1.0

1 files changed, 0 insertions, 542 deletions

diff --git a/getid3/module.audio.aac.php b/getid3/module.audio.aac.php
deleted file mode 100644
index 7ab3e99..0000000
--- a/getid3/module.audio.aac.php
+++ /dev/null
@@ -1,542 +0,0 @@
-<?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.aac.php                                        //
-// module for analyzing AAC Audio files                        //
-// dependencies: NONE                                          //
-//                                                            ///
-/////////////////////////////////////////////////////////////////
-
-
-class getid3_aac
-{
-
-	// new combined constructor
-	function getid3_aac(&$fd, &$ThisFileInfo, $option) {
-
-		if ($option === 'adif') {
-			$this->getAACADIFheaderFilepointer($fd, $ThisFileInfo);
-		}
-		elseif ($option === 'adts') {
-			$this->getAACADTSheaderFilepointer($fd, $ThisFileInfo);
-		}
-	}
-
-
-
-	function getAACADIFheaderFilepointer(&$fd, &$ThisFileInfo) {
-		$ThisFileInfo['fileformat']          = 'aac';
-		$ThisFileInfo['audio']['dataformat'] = 'aac';
-		$ThisFileInfo['audio']['lossless']   = false;
-
-		fseek($fd, $ThisFileInfo['avdataoffset'], SEEK_SET);
-		$AACheader = fread($fd, 1024);
-		$offset    = 0;
-
-		if (substr($AACheader, 0, 4) == 'ADIF') {
-
-			// http://faac.sourceforge.net/wiki/index.php?page=ADIF
-
-			// http://libmpeg.org/mpeg4/doc/w2203tfs.pdf
-			// adif_header() {
-			//     adif_id                                32
-			//     copyright_id_present                    1
-			//     if( copyright_id_present )
-			//         copyright_id                       72
-			//     original_copy                           1
-			//     home                                    1
-			//     bitstream_type                          1
-			//     bitrate                                23
-			//     num_program_config_elements             4
-			//     for (i = 0; i < num_program_config_elements + 1; i++ ) {
-			//         if( bitstream_type == '0' )
-			//             adif_buffer_fullness           20
-			//         program_config_element()
-			//     }
-			// }
-
-			$AACheaderBitstream = getid3_lib::BigEndian2Bin($AACheader);
-			$bitoffset          = 0;
-
-			$ThisFileInfo['aac']['header_type']                   = 'ADIF';
-			$bitoffset += 32;
-			$ThisFileInfo['aac']['header']['mpeg_version']        = 4;
-
-			$ThisFileInfo['aac']['header']['copyright']           = (bool) (substr($AACheaderBitstream, $bitoffset, 1) == '1');
-			$bitoffset += 1;
-			if ($ThisFileInfo['aac']['header']['copyright']) {
-				$ThisFileInfo['aac']['header']['copyright_id']    = getid3_lib::Bin2String(substr($AACheaderBitstream, $bitoffset, 72));
-				$bitoffset += 72;
-			}
-			$ThisFileInfo['aac']['header']['original_copy']       = (bool) (substr($AACheaderBitstream, $bitoffset, 1) == '1');
-			$bitoffset += 1;
-			$ThisFileInfo['aac']['header']['home']                = (bool) (substr($AACheaderBitstream, $bitoffset, 1) == '1');
-			$bitoffset += 1;
-			$ThisFileInfo['aac']['header']['is_vbr']              = (bool) (substr($AACheaderBitstream, $bitoffset, 1) == '1');
-			$bitoffset += 1;
-			if ($ThisFileInfo['aac']['header']['is_vbr']) {
-				$ThisFileInfo['audio']['bitrate_mode']            = 'vbr';
-				$ThisFileInfo['aac']['header']['bitrate_max']     = getid3_lib::Bin2Dec(substr($AACheaderBitstream, $bitoffset, 23));
-				$bitoffset += 23;
-			} else {
-				$ThisFileInfo['audio']['bitrate_mode']            = 'cbr';
-				$ThisFileInfo['aac']['header']['bitrate']         = getid3_lib::Bin2Dec(substr($AACheaderBitstream, $bitoffset, 23));
-				$bitoffset += 23;
-				$ThisFileInfo['audio']['bitrate']                 = $ThisFileInfo['aac']['header']['bitrate'];
-			}
-			if ($ThisFileInfo['audio']['bitrate'] == 0) {
-				$ThisFileInfo['error'][] = 'Corrupt AAC file: bitrate_audio == zero';
-				return false;
-			}
-			$ThisFileInfo['aac']['header']['num_program_configs'] = 1 + getid3_lib::Bin2Dec(substr($AACheaderBitstream, $bitoffset, 4));
-			$bitoffset += 4;
-
-			for ($i = 0; $i < $ThisFileInfo['aac']['header']['num_program_configs']; $i++) {
-				// http://www.audiocoding.com/wiki/index.php?page=program_config_element
-
-				// buffer_fullness                       20
-
-				// element_instance_tag                   4
-				// object_type                            2
-				// sampling_frequency_index               4
-				// num_front_channel_elements             4
-				// num_side_channel_elements              4
-				// num_back_channel_elements              4
-				// num_lfe_channel_elements               2
-				// num_assoc_data_elements                3
-				// num_valid_cc_elements                  4
-				// mono_mixdown_present                   1
-				// mono_mixdown_element_number            4   if mono_mixdown_present == 1
-				// stereo_mixdown_present                 1
-				// stereo_mixdown_element_number          4   if stereo_mixdown_present == 1
-				// matrix_mixdown_idx_present             1
-				// matrix_mixdown_idx                     2   if matrix_mixdown_idx_present == 1
-				// pseudo_surround_enable                 1   if matrix_mixdown_idx_present == 1
-				// for (i = 0; i < num_front_channel_elements; i++) {
-				//     front_element_is_cpe[i]            1
-				//     front_element_tag_select[i]        4
-				// }
-				// for (i = 0; i < num_side_channel_elements; i++) {
-				//     side_element_is_cpe[i]             1
-				//     side_element_tag_select[i]         4
-				// }
-				// for (i = 0; i < num_back_channel_elements; i++) {
-				//     back_element_is_cpe[i]             1
-				//     back_element_tag_select[i]         4
-				// }
-				// for (i = 0; i < num_lfe_channel_elements; i++) {
-				//     lfe_element_tag_select[i]          4
-				// }
-				// for (i = 0; i < num_assoc_data_elements; i++) {
-				//     assoc_data_element_tag_select[i]   4
-				// }
-				// for (i = 0; i < num_valid_cc_elements; i++) {
-				//     cc_element_is_ind_sw[i]            1
-				//     valid_cc_element_tag_select[i]     4
-				// }
-				// byte_alignment()                       VAR
-				// comment_field_bytes                    8
-				// for (i = 0; i < comment_field_bytes; i++) {
-				//     comment_field_data[i]              8
-				// }
-
-				if (!$ThisFileInfo['aac']['header']['is_vbr']) {
-					$ThisFileInfo['aac']['program_configs'][$i]['buffer_fullness']        = getid3_lib::Bin2Dec(substr($AACheaderBitstream, $bitoffset, 20));
-					$bitoffset += 20;
-				}
-				$ThisFileInfo['aac']['program_configs'][$i]['element_instance_tag']       = getid3_lib::Bin2Dec(substr($AACheaderBitstream, $bitoffset, 4));
-				$bitoffset += 4;
-				$ThisFileInfo['aac']['program_configs'][$i]['object_type']                = getid3_lib::Bin2Dec(substr($AACheaderBitstream, $bitoffset, 2));
-				$bitoffset += 2;
-				$ThisFileInfo['aac']['program_configs'][$i]['sampling_frequency_index']   = getid3_lib::Bin2Dec(substr($AACheaderBitstream, $bitoffset, 4));
-				$bitoffset += 4;
-				$ThisFileInfo['aac']['program_configs'][$i]['num_front_channel_elements'] = getid3_lib::Bin2Dec(substr($AACheaderBitstream, $bitoffset, 4));
-				$bitoffset += 4;
-				$ThisFileInfo['aac']['program_configs'][$i]['num_side_channel_elements']  = getid3_lib::Bin2Dec(substr($AACheaderBitstream, $bitoffset, 4));
-				$bitoffset += 4;
-				$ThisFileInfo['aac']['program_configs'][$i]['num_back_channel_elements']  = getid3_lib::Bin2Dec(substr($AACheaderBitstream, $bitoffset, 4));
-				$bitoffset += 4;
-				$ThisFileInfo['aac']['program_configs'][$i]['num_lfe_channel_elements']   = getid3_lib::Bin2Dec(substr($AACheaderBitstream, $bitoffset, 2));
-				$bitoffset += 2;
-				$ThisFileInfo['aac']['program_configs'][$i]['num_assoc_data_elements']    = getid3_lib::Bin2Dec(substr($AACheaderBitstream, $bitoffset, 3));
-				$bitoffset += 3;
-				$ThisFileInfo['aac']['program_configs'][$i]['num_valid_cc_elements']      = getid3_lib::Bin2Dec(substr($AACheaderBitstream, $bitoffset, 4));
-				$bitoffset += 4;
-				$ThisFileInfo['aac']['program_configs'][$i]['mono_mixdown_present']       = (bool) getid3_lib::Bin2Dec(substr($AACheaderBitstream, $bitoffset, 1));
-				$bitoffset += 1;
-				if ($ThisFileInfo['aac']['program_configs'][$i]['mono_mixdown_present']) {
-					$ThisFileInfo['aac']['program_configs'][$i]['mono_mixdown_element_number']    = getid3_lib::Bin2Dec(substr($AACheaderBitstream, $bitoffset, 4));
-					$bitoffset += 4;
-				}
-				$ThisFileInfo['aac']['program_configs'][$i]['stereo_mixdown_present']             = (bool) getid3_lib::Bin2Dec(substr($AACheaderBitstream, $bitoffset, 1));
-				$bitoffset += 1;
-				if ($ThisFileInfo['aac']['program_configs'][$i]['stereo_mixdown_present']) {
-					$ThisFileInfo['aac']['program_configs'][$i]['stereo_mixdown_element_number']  = getid3_lib::Bin2Dec(substr($AACheaderBitstream, $bitoffset, 4));
-					$bitoffset += 4;
-				}
-				$ThisFileInfo['aac']['program_configs'][$i]['matrix_mixdown_idx_present']         = (bool) getid3_lib::Bin2Dec(substr($AACheaderBitstream, $bitoffset, 1));
-				$bitoffset += 1;
-				if ($ThisFileInfo['aac']['program_configs'][$i]['matrix_mixdown_idx_present']) {
-					$ThisFileInfo['aac']['program_configs'][$i]['matrix_mixdown_idx']             = getid3_lib::Bin2Dec(substr($AACheaderBitstream, $bitoffset, 2));
-					$bitoffset += 2;
-					$ThisFileInfo['aac']['program_configs'][$i]['pseudo_surround_enable']         = (bool) getid3_lib::Bin2Dec(substr($AACheaderBitstream, $bitoffset, 1));
-					$bitoffset += 1;
-				}
-				for ($j = 0; $j < $ThisFileInfo['aac']['program_configs'][$i]['num_front_channel_elements']; $j++) {
-					$ThisFileInfo['aac']['program_configs'][$i]['front_element_is_cpe'][$j]     = (bool) getid3_lib::Bin2Dec(substr($AACheaderBitstream, $bitoffset, 1));
-					$bitoffset += 1;
-					$ThisFileInfo['aac']['program_configs'][$i]['front_element_tag_select'][$j] = getid3_lib::Bin2Dec(substr($AACheaderBitstream, $bitoffset, 4));
-					$bitoffset += 4;
-				}
-				for ($j = 0; $j < $ThisFileInfo['aac']['program_configs'][$i]['num_side_channel_elements']; $j++) {
-					$ThisFileInfo['aac']['program_configs'][$i]['side_element_is_cpe'][$j]     = (bool) getid3_lib::Bin2Dec(substr($AACheaderBitstream, $bitoffset, 1));
-					$bitoffset += 1;
-					$ThisFileInfo['aac']['program_configs'][$i]['side_element_tag_select'][$j] = getid3_lib::Bin2Dec(substr($AACheaderBitstream, $bitoffset, 4));
-					$bitoffset += 4;
-				}
-				for ($j = 0; $j < $ThisFileInfo['aac']['program_configs'][$i]['num_back_channel_elements']; $j++) {
-					$ThisFileInfo['aac']['program_configs'][$i]['back_element_is_cpe'][$j]     = (bool) getid3_lib::Bin2Dec(substr($AACheaderBitstream, $bitoffset, 1));
-					$bitoffset += 1;
-					$ThisFileInfo['aac']['program_configs'][$i]['back_element_tag_select'][$j] = getid3_lib::Bin2Dec(substr($AACheaderBitstream, $bitoffset, 4));
-					$bitoffset += 4;
-				}
-				for ($j = 0; $j < $ThisFileInfo['aac']['program_configs'][$i]['num_lfe_channel_elements']; $j++) {
-					$ThisFileInfo['aac']['program_configs'][$i]['lfe_element_tag_select'][$j] = getid3_lib::Bin2Dec(substr($AACheaderBitstream, $bitoffset, 4));
-					$bitoffset += 4;
-				}
-				for ($j = 0; $j < $ThisFileInfo['aac']['program_configs'][$i]['num_assoc_data_elements']; $j++) {
-					$ThisFileInfo['aac']['program_configs'][$i]['assoc_data_element_tag_select'][$j] = getid3_lib::Bin2Dec(substr($AACheaderBitstream, $bitoffset, 4));
-					$bitoffset += 4;
-				}
-				for ($j = 0; $j < $ThisFileInfo['aac']['program_configs'][$i]['num_valid_cc_elements']; $j++) {
-					$ThisFileInfo['aac']['program_configs'][$i]['cc_element_is_ind_sw'][$j]          = (bool) getid3_lib::Bin2Dec(substr($AACheaderBitstream, $bitoffset, 1));
-					$bitoffset += 1;
-					$ThisFileInfo['aac']['program_configs'][$i]['valid_cc_element_tag_select'][$j]   = getid3_lib::Bin2Dec(substr($AACheaderBitstream, $bitoffset, 4));
-					$bitoffset += 4;
-				}
-
-				$bitoffset = ceil($bitoffset / 8) * 8;
-
-				$ThisFileInfo['aac']['program_configs'][$i]['comment_field_bytes'] = getid3_lib::Bin2Dec(substr($AACheaderBitstream, $bitoffset, 8));
-				$bitoffset += 8;
-				$ThisFileInfo['aac']['program_configs'][$i]['comment_field']       = getid3_lib::Bin2String(substr($AACheaderBitstream, $bitoffset, 8 * $ThisFileInfo['aac']['program_configs'][$i]['comment_field_bytes']));
-				$bitoffset += 8 * $ThisFileInfo['aac']['program_configs'][$i]['comment_field_bytes'];
-
-
-				$ThisFileInfo['aac']['header']['profile_text']                      = $this->AACprofileLookup($ThisFileInfo['aac']['program_configs'][$i]['object_type'], $ThisFileInfo['aac']['header']['mpeg_version']);
-				$ThisFileInfo['aac']['program_configs'][$i]['sampling_frequency']   = $this->AACsampleRateLookup($ThisFileInfo['aac']['program_configs'][$i]['sampling_frequency_index']);
-				$ThisFileInfo['audio']['sample_rate']                               = $ThisFileInfo['aac']['program_configs'][$i]['sampling_frequency'];
-				$ThisFileInfo['audio']['channels']                                  = $this->AACchannelCountCalculate($ThisFileInfo['aac']['program_configs'][$i]);
-				if ($ThisFileInfo['aac']['program_configs'][$i]['comment_field']) {
-					$ThisFileInfo['aac']['comments'][]                          = $ThisFileInfo['aac']['program_configs'][$i]['comment_field'];
-				}
-			}
-			$ThisFileInfo['playtime_seconds'] = (($ThisFileInfo['avdataend'] - $ThisFileInfo['avdataoffset']) * 8) / $ThisFileInfo['audio']['bitrate'];
-
-			$ThisFileInfo['audio']['encoder_options'] = $ThisFileInfo['aac']['header_type'].' '.$ThisFileInfo['aac']['header']['profile_text'];
-
-
-
-			return true;
-
-		} else {
-
-			unset($ThisFileInfo['fileformat']);
-			unset($ThisFileInfo['aac']);
-			$ThisFileInfo['error'][] = 'AAC-ADIF synch not found at offset '.$ThisFileInfo['avdataoffset'].' (expected "ADIF", found "'.substr($AACheader, 0, 4).'" instead)';
-			return false;
-
-		}
-
-	}
-
-
-	function getAACADTSheaderFilepointer(&$fd, &$ThisFileInfo, $MaxFramesToScan=1000000, $ReturnExtendedInfo=false) {
-		// based loosely on code from AACfile by Jurgen Faul  <jfaulØgmx.de>
-		// http://jfaul.de/atl  or  http://j-faul.virtualave.net/atl/atl.html
-
-
-		// http://faac.sourceforge.net/wiki/index.php?page=ADTS
-
-		// * ADTS Fixed Header: these don't change from frame to frame
-		// syncword                                       12    always: '111111111111'
-		// ID                                              1    0: MPEG-4, 1: MPEG-2
-		// layer                                           2    always: '00'
-		// protection_absent                               1
-		// profile                                         2
-		// sampling_frequency_index                        4
-		// private_bit                                     1
-		// channel_configuration                           3
-		// original/copy                                   1
-		// home                                            1
-		// emphasis                                        2    only if ID == 0 (ie MPEG-4)
-
-		// * ADTS Variable Header: these can change from frame to frame
-		// copyright_identification_bit                    1
-		// copyright_identification_start                  1
-		// aac_frame_length                               13    length of the frame including header (in bytes)
-		// adts_buffer_fullness                           11    0x7FF indicates VBR
-		// no_raw_data_blocks_in_frame                     2
-
-		// * ADTS Error check
-		// crc_check                                      16    only if protection_absent == 0
-
-		$byteoffset  = 0;
-		$framenumber = 0;
-
-		// Init bit pattern array
-		static $decbin = array();
-
-		// Populate $bindec
-		for ($i = 0; $i < 256; $i++) {
-			$decbin[chr($i)] = str_pad(decbin($i), 8, '0', STR_PAD_LEFT);
-		}
-
-		// used to calculate bitrate below
-		$BitrateCache = array();
-
-
-		while (true) {
-			// breaks out when end-of-file encountered, or invalid data found,
-			// or MaxFramesToScan frames have been scanned
-
-			if ($byteoffset >= pow(2, 31)) {
-				$ThisFileInfo['warning'][] = 'Unable to parse AAC file beyond '.ftell($fd).' (PHP does not support file operations beyond 2GB)';
-				return false;
-			}
-			fseek($fd, $byteoffset, SEEK_SET);
-
-			// First get substring
-			$substring = fread($fd, 10);
-			$substringlength = strlen($substring);
-			if ($substringlength != 10) {
-				$ThisFileInfo['error'][] = 'Failed to read 10 bytes at offset '.(ftell($fd) - $substringlength).' (only read '.$substringlength.' bytes)';
-				return false;
-			}
-
-			// Initialise $AACheaderBitstream
-			$AACheaderBitstream = '';
-
-			// Loop thru substring chars
-			for ($i = 0; $i < 10; $i++) {
-				$AACheaderBitstream .= $decbin[$substring{$i}];
-			}
-
-			$bitoffset = 0;
-
-			$synctest = bindec(substr($AACheaderBitstream, $bitoffset, 12));
-
-			$bitoffset += 12;
-			if ($synctest != 0x0FFF) {
-				$ThisFileInfo['error'][] = 'Synch pattern (0x0FFF) not found at offset '.(ftell($fd) - 10).' (found 0x0'.strtoupper(dechex($synctest)).' instead)';
-				if ($ThisFileInfo['fileformat'] == 'aac') {
-					return true;
-				}
-				return false;
-			}
-
-			// Gather info for first frame only - this takes time to do 1000 times!
-			if ($framenumber > 0) {
-
-				if (!$AACheaderBitstream[$bitoffset]) {
-
-					// MPEG-4
-					$bitoffset += 20;
-
-				} else {
-
-					// MPEG-2
-					$bitoffset += 18;
-
-				}
-
-			} else {
-
-				$ThisFileInfo['aac']['header_type']                      = 'ADTS';
-				$ThisFileInfo['aac']['header']['synch']                  = $synctest;
-				$ThisFileInfo['fileformat']                              = 'aac';
-				$ThisFileInfo['audio']['dataformat']                     = 'aac';
-
-				$ThisFileInfo['aac']['header']['mpeg_version']           = ((substr($AACheaderBitstream, $bitoffset, 1) == '0') ? 4 : 2);
-				$bitoffset += 1;
-				$ThisFileInfo['aac']['header']['layer']                  = getid3_lib::Bin2Dec(substr($AACheaderBitstream, $bitoffset, 2));
-				$bitoffset += 2;
-				if ($ThisFileInfo['aac']['header']['layer'] != 0) {
-					$ThisFileInfo['error'][] = 'Layer error - expected 0x00, found 0x'.dechex($ThisFileInfo['aac']['header']['layer']).' instead';
-					return false;
-				}
-				$ThisFileInfo['aac']['header']['crc_present']            = ((substr($AACheaderBitstream, $bitoffset, 1) == '0') ? true : false);
-				$bitoffset += 1;
-				$ThisFileInfo['aac']['header']['profile_id']             = getid3_lib::Bin2Dec(substr($AACheaderBitstream, $bitoffset, 2));
-				$bitoffset += 2;
-				$ThisFileInfo['aac']['header']['profile_text']           = $this->AACprofileLookup($ThisFileInfo['aac']['header']['profile_id'], $ThisFileInfo['aac']['header']['mpeg_version']);
-
-				$ThisFileInfo['aac']['header']['sample_frequency_index'] = getid3_lib::Bin2Dec(substr($AACheaderBitstream, $bitoffset, 4));
-				$bitoffset += 4;
-				$ThisFileInfo['aac']['header']['sample_frequency']       = $this->AACsampleRateLookup($ThisFileInfo['aac']['header']['sample_frequency_index']);
-				if ($ThisFileInfo['aac']['header']['sample_frequency'] == 0) {
-					$ThisFileInfo['error'][] = 'Corrupt AAC file: sample_frequency == zero';
-					return false;
-				}
-				$ThisFileInfo['audio']['sample_rate']                    = $ThisFileInfo['aac']['header']['sample_frequency'];
-
-				$ThisFileInfo['aac']['header']['private']                = (bool) getid3_lib::Bin2Dec(substr($AACheaderBitstream, $bitoffset, 1));
-				$bitoffset += 1;
-				$ThisFileInfo['aac']['header']['channel_configuration']  = getid3_lib::Bin2Dec(substr($AACheaderBitstream, $bitoffset, 3));
-				$bitoffset += 3;
-				$ThisFileInfo['audio']['channels']                       = $ThisFileInfo['aac']['header']['channel_configuration'];
-				$ThisFileInfo['aac']['header']['original']               = (bool) getid3_lib::Bin2Dec(substr($AACheaderBitstream, $bitoffset, 1));
-				$bitoffset += 1;
-				$ThisFileInfo['aac']['header']['home']                   = (bool) getid3_lib::Bin2Dec(substr($AACheaderBitstream, $bitoffset, 1));
-				$bitoffset += 1;
-
-				if ($ThisFileInfo['aac']['header']['mpeg_version'] == 4) {
-					$ThisFileInfo['aac']['header']['emphasis']           = getid3_lib::Bin2Dec(substr($AACheaderBitstream, $bitoffset, 2));
-					$bitoffset += 2;
-				}
-
-				if ($ReturnExtendedInfo) {
-
-					$ThisFileInfo['aac'][$framenumber]['copyright_id_bit']   = (bool) getid3_lib::Bin2Dec(substr($AACheaderBitstream, $bitoffset, 1));
-					$bitoffset += 1;
-					$ThisFileInfo['aac'][$framenumber]['copyright_id_start'] = (bool) getid3_lib::Bin2Dec(substr($AACheaderBitstream, $bitoffset, 1));
-					$bitoffset += 1;
-
-				} else {
-
-					$bitoffset += 2;
-
-				}
-
-			}
-
-			$FrameLength = bindec(substr($AACheaderBitstream, $bitoffset, 13));
-
-			if (!isset($BitrateCache[$FrameLength])) {
-				$BitrateCache[$FrameLength] = ($ThisFileInfo['aac']['header']['sample_frequency'] / 1024) * $FrameLength * 8;
-			}
-			@$ThisFileInfo['aac']['bitrate_distribution'][$BitrateCache[$FrameLength]]++;
-
-			$ThisFileInfo['aac'][$framenumber]['aac_frame_length']     = $FrameLength;
-			$bitoffset += 13;
-			$ThisFileInfo['aac'][$framenumber]['adts_buffer_fullness'] = bindec(substr($AACheaderBitstream, $bitoffset, 11));
-			$bitoffset += 11;
-			if ($ThisFileInfo['aac'][$framenumber]['adts_buffer_fullness'] == 0x07FF) {
-				$ThisFileInfo['audio']['bitrate_mode'] = 'vbr';
-			} else {
-				$ThisFileInfo['audio']['bitrate_mode'] = 'cbr';
-			}
-			$ThisFileInfo['aac'][$framenumber]['num_raw_data_blocks']  = bindec(substr($AACheaderBitstream, $bitoffset, 2));
-			$bitoffset += 2;
-
-			if ($ThisFileInfo['aac']['header']['crc_present']) {
-				//$ThisFileInfo['aac'][$framenumber]['crc']              = bindec(substr($AACheaderBitstream, $bitoffset, 16));
-				$bitoffset += 16;
-			}
-
-			if (!$ReturnExtendedInfo) {
-				unset($ThisFileInfo['aac'][$framenumber]);
-			}
-
-			$byteoffset += $FrameLength;
-			if ((++$framenumber < $MaxFramesToScan) && (($byteoffset + 10) < $ThisFileInfo['avdataend'])) {
-
-				// keep scanning
-
-			} else {
-
-				$ThisFileInfo['aac']['frames']    = $framenumber;
-				$ThisFileInfo['playtime_seconds'] = ($ThisFileInfo['avdataend'] / $byteoffset) * (($framenumber * 1024) / $ThisFileInfo['aac']['header']['sample_frequency']);  // (1 / % of file scanned) * (samples / (samples/sec)) = seconds
-				if ($ThisFileInfo['playtime_seconds'] == 0) {
-					$ThisFileInfo['error'][] = 'Corrupt AAC file: playtime_seconds == zero';
-					return false;
-				}
-				$ThisFileInfo['audio']['bitrate']    = (($ThisFileInfo['avdataend'] - $ThisFileInfo['avdataoffset']) * 8) / $ThisFileInfo['playtime_seconds'];
-				ksort($ThisFileInfo['aac']['bitrate_distribution']);
-
-				$ThisFileInfo['audio']['encoder_options'] = $ThisFileInfo['aac']['header_type'].' '.$ThisFileInfo['aac']['header']['profile_text'];
-
-				return true;
-
-			}
-		}
-		// should never get here.
-	}
-
-	function AACsampleRateLookup($samplerateid) {
-		static $AACsampleRateLookup = array();
-		if (empty($AACsampleRateLookup)) {
-			$AACsampleRateLookup[0]  = 96000;
-			$AACsampleRateLookup[1]  = 88200;
-			$AACsampleRateLookup[2]  = 64000;
-			$AACsampleRateLookup[3]  = 48000;
-			$AACsampleRateLookup[4]  = 44100;
-			$AACsampleRateLookup[5]  = 32000;
-			$AACsampleRateLookup[6]  = 24000;
-			$AACsampleRateLookup[7]  = 22050;
-			$AACsampleRateLookup[8]  = 16000;
-			$AACsampleRateLookup[9]  = 12000;
-			$AACsampleRateLookup[10] = 11025;
-			$AACsampleRateLookup[11] = 8000;
-			$AACsampleRateLookup[12] = 0;
-			$AACsampleRateLookup[13] = 0;
-			$AACsampleRateLookup[14] = 0;
-			$AACsampleRateLookup[15] = 0;
-		}
-		return (isset($AACsampleRateLookup[$samplerateid]) ? $AACsampleRateLookup[$samplerateid] : 'invalid');
-	}
-
-	function AACprofileLookup($profileid, $mpegversion) {
-		static $AACprofileLookup = array();
-		if (empty($AACprofileLookup)) {
-			$AACprofileLookup[2][0]  = 'Main profile';
-			$AACprofileLookup[2][1]  = 'Low Complexity profile (LC)';
-			$AACprofileLookup[2][2]  = 'Scalable Sample Rate profile (SSR)';
-			$AACprofileLookup[2][3]  = '(reserved)';
-			$AACprofileLookup[4][0]  = 'AAC_MAIN';
-			$AACprofileLookup[4][1]  = 'AAC_LC';
-			$AACprofileLookup[4][2]  = 'AAC_SSR';
-			$AACprofileLookup[4][3]  = 'AAC_LTP';
-		}
-		return (isset($AACprofileLookup[$mpegversion][$profileid]) ? $AACprofileLookup[$mpegversion][$profileid] : 'invalid');
-	}
-
-	function AACchannelCountCalculate($program_configs) {
-		$channels = 0;
-		for ($i = 0; $i < $program_configs['num_front_channel_elements']; $i++) {
-			$channels++;
-			if ($program_configs['front_element_is_cpe'][$i]) {
-				// each front element is channel pair (CPE = Channel Pair Element)
-				$channels++;
-			}
-		}
-		for ($i = 0; $i < $program_configs['num_side_channel_elements']; $i++) {
-			$channels++;
-			if ($program_configs['side_element_is_cpe'][$i]) {
-				// each side element is channel pair (CPE = Channel Pair Element)
-				$channels++;
-			}
-		}
-		for ($i = 0; $i < $program_configs['num_back_channel_elements']; $i++) {
-			$channels++;
-			if ($program_configs['back_element_is_cpe'][$i]) {
-				// each back element is channel pair (CPE = Channel Pair Element)
-				$channels++;
-			}
-		}
-		for ($i = 0; $i < $program_configs['num_lfe_channel_elements']; $i++) {
-			$channels++;
-		}
-		return $channels;
-	}
-
-}
-
-
-?>
\ No newline at end of file