it technically logs in and streams.. but thats it, complete rewrite almost everything broken

1 files changed, 311 insertions, 0 deletions

diff --git a/modules/getid3/module.audio.aac_adif.php b/modules/getid3/module.audio.aac_adif.php
new file mode 100644
index 00000000..0b00bb96
--- /dev/null
+++ b/modules/getid3/module.audio.aac_adif.php
@@ -0,0 +1,311 @@
+<?php
+// +----------------------------------------------------------------------+

+// | PHP version 5                                                        |

+// +----------------------------------------------------------------------+

+// | Copyright (c) 2002-2006 James Heinrich, Allan Hansen                 |

+// +----------------------------------------------------------------------+

+// | This source file is subject to version 2 of the GPL license,         |

+// | that is bundled with this package in the file license.txt and is     |

+// | available through the world-wide-web at the following url:           |

+// | http://www.gnu.org/copyleft/gpl.html                                 |
+// +----------------------------------------------------------------------+
+// | getID3() - http://getid3.sourceforge.net or http://www.getid3.org    |
+// +----------------------------------------------------------------------+

+// | Authors: James Heinrich <infoØgetid3*org>                            |

+// |          Allan Hansen <ahØartemis*dk>                                |

+// +----------------------------------------------------------------------+
+// | module.audio.aac_adif.php                                            |
+// | Module for analyzing AAC files with ADIF header.                     |
+// | dependencies: NONE                                                   |
+// +----------------------------------------------------------------------+

+//

+// $Id: module.audio.aac_adif.php,v 1.3 2006/11/02 10:48:00 ah Exp $
+
+        
+        
+class getid3_aac_adif extends getid3_handler
+{
+
+    public function Analyze() {
+
+        $getid3 = $this->getid3;    
+
+        // 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()
+        //     }
+        // }
+        
+
+        $getid3->info['fileformat']          = 'aac';
+        $getid3->info['audio']['dataformat'] = 'aac';
+        $getid3->info['audio']['lossless']   = false;
+        
+        $getid3->info['aac']['header'] = array () ;
+        $info_aac        = &$getid3->info['aac'];
+        $info_aac_header = & $info_aac['header'];
+
+        fseek($getid3->fp, $getid3->info['avdataoffset'], SEEK_SET);
+        $aac_header_bitstream = getid3_lib::BigEndian2Bin(fread($getid3->fp, 1024));
+        
+        $info_aac['header_type']            = 'ADIF';
+        $info_aac_header['mpeg_version'] = 4;
+        $bit_offset = 32;
+
+        $info_aac_header['copyright'] = $aac_header_bitstream{$bit_offset++} == '1';
+        if ($info_aac_header['copyright']) {
+            $info_aac_header['copyright_id'] = getid3_aac_adif::Bin2String(substr($aac_header_bitstream, $bit_offset, 72));
+            $bit_offset += 72;
+        }
+        
+        $info_aac_header['original_copy'] = $aac_header_bitstream{$bit_offset++} == '1';
+        $info_aac_header['home']          = $aac_header_bitstream{$bit_offset++} == '1';
+        $info_aac_header['is_vbr']        = $aac_header_bitstream{$bit_offset++} == '1';
+
+        if ($info_aac_header['is_vbr']) {
+            $getid3->info['audio']['bitrate_mode'] = 'vbr';
+            $info_aac_header['bitrate_max']     = bindec(substr($aac_header_bitstream, $bit_offset, 23));
+            $bit_offset += 23;
+        } 
+        else {
+            $getid3->info['audio']['bitrate_mode'] = 'cbr';
+            $info_aac_header['bitrate']         = bindec(substr($aac_header_bitstream, $bit_offset, 23));
+            $bit_offset += 23;
+            $getid3->info['audio']['bitrate']      = $info_aac_header['bitrate'];
+        }
+        
+        $info_aac_header['num_program_configs'] = 1 + bindec(substr($aac_header_bitstream, $bit_offset, 4));
+        $bit_offset += 4;
+
+        for ($i = 0; $i < $info_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
+            // }
+            
+            $info_aac['program_configs'][$i] = array ();
+            $info_aac_program_configs_i = &$info_aac['program_configs'][$i];
+
+            if (!$info_aac_header['is_vbr']) {
+                $info_aac_program_configs_i['buffer_fullness']        = bindec(substr($aac_header_bitstream, $bit_offset, 20));
+                $bit_offset += 20;
+            }
+                
+            $info_aac_program_configs_i['element_instance_tag']       = bindec(substr($aac_header_bitstream, $bit_offset,      4));
+            $info_aac_program_configs_i['object_type']                = bindec(substr($aac_header_bitstream, $bit_offset +  4, 2));
+            $info_aac_program_configs_i['sampling_frequency_index']   = bindec(substr($aac_header_bitstream, $bit_offset +  6, 4));
+            $info_aac_program_configs_i['num_front_channel_elements'] = bindec(substr($aac_header_bitstream, $bit_offset + 10, 4));
+            $info_aac_program_configs_i['num_side_channel_elements']  = bindec(substr($aac_header_bitstream, $bit_offset + 14, 4));
+            $info_aac_program_configs_i['num_back_channel_elements']  = bindec(substr($aac_header_bitstream, $bit_offset + 18, 4));
+            $info_aac_program_configs_i['num_lfe_channel_elements']   = bindec(substr($aac_header_bitstream, $bit_offset + 22, 2));
+            $info_aac_program_configs_i['num_assoc_data_elements']    = bindec(substr($aac_header_bitstream, $bit_offset + 24, 3));
+            $info_aac_program_configs_i['num_valid_cc_elements']      = bindec(substr($aac_header_bitstream, $bit_offset + 27, 4));
+            $bit_offset += 31;
+            
+            $info_aac_program_configs_i['mono_mixdown_present'] = $aac_header_bitstream{$bit_offset++} == 1;
+            if ($info_aac_program_configs_i['mono_mixdown_present']) {
+                $info_aac_program_configs_i['mono_mixdown_element_number'] = bindec(substr($aac_header_bitstream, $bit_offset, 4));
+                $bit_offset += 4;
+            }
+            
+            $info_aac_program_configs_i['stereo_mixdown_present'] = $aac_header_bitstream{$bit_offset++} == 1;
+            if ($info_aac_program_configs_i['stereo_mixdown_present']) {
+                $info_aac_program_configs_i['stereo_mixdown_element_number'] = bindec(substr($aac_header_bitstream, $bit_offset, 4));
+                $bit_offset += 4;
+            }
+            
+            $info_aac_program_configs_i['matrix_mixdown_idx_present'] = $aac_header_bitstream{$bit_offset++} == 1;
+            if ($info_aac_program_configs_i['matrix_mixdown_idx_present']) {
+                $info_aac_program_configs_i['matrix_mixdown_idx']     = bindec(substr($aac_header_bitstream, $bit_offset, 2));
+                $bit_offset += 2;
+                $info_aac_program_configs_i['pseudo_surround_enable'] = $aac_header_bitstream{$bit_offset++} == 1;
+            }
+            
+            for ($j = 0; $j < $info_aac_program_configs_i['num_front_channel_elements']; $j++) {
+                $info_aac_program_configs_i['front_element_is_cpe'][$j]     = $aac_header_bitstream{$bit_offset++} == 1;
+                $info_aac_program_configs_i['front_element_tag_select'][$j] = bindec(substr($aac_header_bitstream, $bit_offset, 4));
+                $bit_offset += 4;
+            }
+            for ($j = 0; $j < $info_aac_program_configs_i['num_side_channel_elements']; $j++) {
+                $info_aac_program_configs_i['side_element_is_cpe'][$j]     = $aac_header_bitstream{$bit_offset++} == 1;
+                $info_aac_program_configs_i['side_element_tag_select'][$j] = bindec(substr($aac_header_bitstream, $bit_offset, 4));
+                $bit_offset += 4;
+            }
+            for ($j = 0; $j < $info_aac_program_configs_i['num_back_channel_elements']; $j++) {
+                $info_aac_program_configs_i['back_element_is_cpe'][$j]     = $aac_header_bitstream{$bit_offset++} == 1;
+                $info_aac_program_configs_i['back_element_tag_select'][$j] = bindec(substr($aac_header_bitstream, $bit_offset, 4));
+                $bit_offset += 4;
+            }
+            for ($j = 0; $j < $info_aac_program_configs_i['num_lfe_channel_elements']; $j++) {
+                $info_aac_program_configs_i['lfe_element_tag_select'][$j] = bindec(substr($aac_header_bitstream, $bit_offset, 4));
+                $bit_offset += 4;
+            }
+            for ($j = 0; $j < $info_aac_program_configs_i['num_assoc_data_elements']; $j++) {
+                $info_aac_program_configs_i['assoc_data_element_tag_select'][$j] = bindec(substr($aac_header_bitstream, $bit_offset, 4));
+                $bit_offset += 4;
+            }
+            for ($j = 0; $j < $info_aac_program_configs_i['num_valid_cc_elements']; $j++) {
+                $info_aac_program_configs_i['cc_element_is_ind_sw'][$j]          = $aac_header_bitstream{$bit_offset++} == 1;
+                $info_aac_program_configs_i['valid_cc_element_tag_select'][$j]   = bindec(substr($aac_header_bitstream, $bit_offset, 4));
+                $bit_offset += 4;
+            }
+
+            $bit_offset = ceil($bit_offset / 8) * 8;
+
+            $info_aac_program_configs_i['comment_field_bytes'] = bindec(substr($aac_header_bitstream, $bit_offset, 8));
+            $bit_offset += 8;
+            
+            $info_aac_program_configs_i['comment_field'] = getid3_aac_adif::Bin2String(substr($aac_header_bitstream, $bit_offset, 8 * $info_aac_program_configs_i['comment_field_bytes']));
+            $bit_offset += 8 * $info_aac_program_configs_i['comment_field_bytes'];
+
+            $info_aac_header['profile_text']                  = getid3_aac_adif::AACprofileLookup($info_aac_program_configs_i['object_type'], $info_aac_header['mpeg_version']);
+            $info_aac_program_configs_i['sampling_frequency'] = $getid3->info['audio']['sample_rate'] = getid3_aac_adif::AACsampleRateLookup($info_aac_program_configs_i['sampling_frequency_index']);
+            $getid3->info['audio']['channels']                = getid3_aac_adif::AACchannelCountCalculate($info_aac_program_configs_i);
+            
+            if ($info_aac_program_configs_i['comment_field']) {
+                $info_aac['comments'][] = $info_aac_program_configs_i['comment_field'];
+            }
+        }
+        
+        $getid3->info['playtime_seconds'] = (($getid3->info['avdataend'] - $getid3->info['avdataoffset']) * 8) / $getid3->info['audio']['bitrate'];
+        $getid3->info['audio']['encoder_options'] = $info_aac['header_type'].' '.$info_aac_header['profile_text'];
+
+        return true;
+    }
+
+
+
+    public static function Bin2String($bin_string) {
+        // return 'hi' for input of '0110100001101001'
+        $string = '';
+        $bin_string_reversed = strrev($bin_string);
+        for ($i = 0; $i < strlen($bin_string_reversed); $i += 8) {
+            $string = chr(bindec(strrev(substr($bin_string_reversed, $i, 8)))).$string;
+        }
+        return $string;
+    }
+    
+    
+    
+    public static function AACsampleRateLookup($samplerate_id) {
+        
+        static $lookup = array (
+            0  => 96000,
+            1  => 88200,
+            2  => 64000,
+            3  => 48000,
+            4  => 44100,
+            5  => 32000,
+            6  => 24000,
+            7  => 22050,
+            8  => 16000,
+            9  => 12000,
+            10 => 11025,
+            11 => 8000,
+            12 => 0,
+            13 => 0,
+            14 => 0,
+            15 => 0
+        );
+        return (isset($lookup[$samplerate_id]) ? $lookup[$samplerate_id] : 'invalid');
+    }
+
+
+
+    public static function AACprofileLookup($profile_id, $mpeg_version) {
+        
+        static $lookup = array (
+            2 => array ( 
+                0 => 'Main profile',
+                1 => 'Low Complexity profile (LC)',
+                2 => 'Scalable Sample Rate profile (SSR)',
+                3 => '(reserved)'
+            ),            
+            4 => array (
+                0 => 'AAC_MAIN',
+                1 => 'AAC_LC',
+                2 => 'AAC_SSR',
+                3 => 'AAC_LTP'
+            )
+        );
+        return (isset($lookup[$mpeg_version][$profile_id]) ? $lookup[$mpeg_version][$profile_id] : 'invalid');
+    }
+
+
+
+    public static function AACchannelCountCalculate($program_configs) {
+        
+        $channels = 0;
+        
+        foreach (array ('front', 'side', 'back') as $placement) {
+            for ($i = 0; $i < $program_configs['num_'.$placement.'_channel_elements']; $i++) {
+                
+                // Each element is channel pair (CPE = Channel Pair Element)
+                $channels += 1 + ($program_configs[$placement.'_element_is_cpe'][$i] ? 1 : 0);
+            }
+        }
+        
+        return $channels + $program_configs['num_lfe_channel_elements'];
+    }
+
+}
+
+
+?>
\ No newline at end of file