diff options
Diffstat (limited to 'modules/getid3/module.audio.la.php')
| -rw-r--r-- | modules/getid3/module.audio.la.php | 36 |
1 files changed, 18 insertions, 18 deletions
diff --git a/modules/getid3/module.audio.la.php b/modules/getid3/module.audio.la.php index 6b54b018..f68071e1 100644 --- a/modules/getid3/module.audio.la.php +++ b/modules/getid3/module.audio.la.php @@ -22,20 +22,20 @@ //
// $Id: module.audio.la.php,v 1.2 2006/11/02 10:48:01 ah Exp $ - - + + class getid3_la extends getid3_handler { public function Analyze() { - + $getid3 = $this->getid3; - + $getid3->include_module('audio-video.riff'); - + fseek($getid3->fp, $getid3->info['avdataoffset'], SEEK_SET); $raw_data = fread($getid3->fp, getid3::FREAD_BUFFER_SIZE); - + $getid3->info['fileformat'] = 'la'; $getid3->info['audio']['dataformat'] = 'la'; $getid3->info['audio']['lossless'] = true; @@ -45,12 +45,12 @@ class getid3_la extends getid3_handler $getid3->info['la']['version'] = (float)$getid3->info['la']['version_major'] + ($getid3->info['la']['version_minor'] / 10); $getid3->info['la']['uncompressed_size'] = getid3_lib::LittleEndian2Int(substr($raw_data, 4, 4)); - + $wave_chunk = substr($raw_data, 8, 4); if ($wave_chunk !== 'WAVE') { throw new getid3_exception('Expected "WAVE" ('.getid3_lib::PrintHexBytes('WAVE').') at offset 8, found "'.$wave_chunk.'" ('.getid3_lib::PrintHexBytes($wave_chunk).') instead.'); } - + $offset = 12; $getid3->info['la']['fmt_size'] = 24; @@ -71,13 +71,13 @@ class getid3_la extends getid3_handler throw new getid3_exception('Expected "fmt " ('.getid3_lib::PrintHexBytes('fmt ').') at offset '.$offset.', found "'.$fmt_chunk.'" ('.getid3_lib::PrintHexBytes($fmt_chunk).') instead.'); } $offset += 4; - + $fmt_size = getid3_lib::LittleEndian2Int(substr($raw_data, $offset, 4)); $offset += 4; $getid3->info['la']['raw']['format'] = getid3_lib::LittleEndian2Int(substr($raw_data, $offset, 2)); $offset += 2; - + getid3_lib::ReadSequence('LittleEndian2Int', $getid3->info['la'], $raw_data, $offset, array ( 'channels' => 2, @@ -89,9 +89,9 @@ class getid3_la extends getid3_handler ) ); $offset += 18; - + $getid3->info['la']['raw']['flags'] = getid3_lib::LittleEndian2Int($raw_data{$offset++}); - + $getid3->info['la']['flags']['seekable'] = (bool)($getid3->info['la']['raw']['flags'] & 0x01); if ($getid3->info['la']['version'] >= 0.4) { $getid3->info['la']['flags']['high_compression'] = (bool)($getid3->info['la']['raw']['flags'] & 0x02); @@ -106,7 +106,7 @@ class getid3_la extends getid3_handler // samples, so 4 * int(totalSamples / (blockSize * seekEvery)) should // give the number of bytes used for the seekpoints. Of course, if seeking // is disabled, there are no seekpoints stored. - + if ($getid3->info['la']['version'] >= 0.4) { $getid3->info['la']['blocksize'] = 61440; $getid3->info['la']['seekevery'] = 19; @@ -130,7 +130,7 @@ class getid3_la extends getid3_handler // Following the main header information, the program outputs all of the // seekpoints. Following these is what I called the 'footer start', // i.e. the position immediately after the La audio data is finished. - + $getid3->info['la']['footerstart'] = getid3_lib::LittleEndian2Int(substr($raw_data, $offset, 4)); $offset += 4; @@ -147,7 +147,7 @@ class getid3_la extends getid3_handler } if ($getid3->info['la']['footerstart'] < $getid3->info['avdataend']) { - + // Create riff header $riff_data = 'WAVE'; if ($getid3->info['la']['version'] == 0.2) { @@ -160,14 +160,14 @@ class getid3_la extends getid3_handler $riff_data .= fread($getid3->fp, $getid3->info['avdataend'] - $getid3->info['la']['footerstart']); } $riff_data = 'RIFF'.getid3_lib::LittleEndian2String(strlen($riff_data), 4, false).$riff_data; - + // Clone getid3 - messing with offsets - better safe than sorry $clone = clone $getid3; - + // Analyze clone by string $riff = new getid3_riff($clone); $riff->AnalyzeString($riff_data); - + // Import from clone and destroy $getid3->info['riff'] = $clone->info['riff']; $getid3->warnings($clone->warnings()); |