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-rw-r--r--getid3/module.audio.la.php228
1 files changed, 0 insertions, 228 deletions
diff --git a/getid3/module.audio.la.php b/getid3/module.audio.la.php
deleted file mode 100644
index c1d4f52..0000000
--- a/getid3/module.audio.la.php
+++ /dev/null
@@ -1,228 +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.la.php //
-// module for analyzing LA audio files //
-// dependencies: module.audio.riff.php //
-// ///
-/////////////////////////////////////////////////////////////////
-
-getid3_lib::IncludeDependency(GETID3_INCLUDEPATH.'module.audio-video.riff.php', __FILE__, true);
-
-class getid3_la
-{
-
- function getid3_la(&$fd, &$ThisFileInfo) {
- $offset = 0;
- fseek($fd, $ThisFileInfo['avdataoffset'], SEEK_SET);
- $rawdata = fread($fd, GETID3_FREAD_BUFFER_SIZE);
-
- switch (substr($rawdata, $offset, 4)) {
- case 'LA02':
- case 'LA03':
- case 'LA04':
- $ThisFileInfo['fileformat'] = 'la';
- $ThisFileInfo['audio']['dataformat'] = 'la';
- $ThisFileInfo['audio']['lossless'] = true;
-
- $ThisFileInfo['la']['version_major'] = (int) substr($rawdata, $offset + 2, 1);
- $ThisFileInfo['la']['version_minor'] = (int) substr($rawdata, $offset + 3, 1);
- $ThisFileInfo['la']['version'] = (float) $ThisFileInfo['la']['version_major'] + ($ThisFileInfo['la']['version_minor'] / 10);
- $offset += 4;
-
- $ThisFileInfo['la']['uncompressed_size'] = getid3_lib::LittleEndian2Int(substr($rawdata, $offset, 4));
- $offset += 4;
- if ($ThisFileInfo['la']['uncompressed_size'] == 0) {
- $ThisFileInfo['error'][] = 'Corrupt LA file: uncompressed_size == zero';
- return false;
- }
-
- $WAVEchunk = substr($rawdata, $offset, 4);
- if ($WAVEchunk !== 'WAVE') {
- $ThisFileInfo['error'][] = 'Expected "WAVE" ('.getid3_lib::PrintHexBytes('WAVE').') at offset '.$offset.', found "'.$WAVEchunk.'" ('.getid3_lib::PrintHexBytes($WAVEchunk).') instead.';
- return false;
- }
- $offset += 4;
-
- $ThisFileInfo['la']['fmt_size'] = 24;
- if ($ThisFileInfo['la']['version'] >= 0.3) {
-
- $ThisFileInfo['la']['fmt_size'] = getid3_lib::LittleEndian2Int(substr($rawdata, $offset, 4));
- $ThisFileInfo['la']['header_size'] = 49 + $ThisFileInfo['la']['fmt_size'] - 24;
- $offset += 4;
-
- } else {
-
- // version 0.2 didn't support additional data blocks
- $ThisFileInfo['la']['header_size'] = 41;
-
- }
-
- $fmt_chunk = substr($rawdata, $offset, 4);
- if ($fmt_chunk !== 'fmt ') {
- $ThisFileInfo['error'][] = 'Expected "fmt " ('.getid3_lib::PrintHexBytes('fmt ').') at offset '.$offset.', found "'.$fmt_chunk.'" ('.getid3_lib::PrintHexBytes($fmt_chunk).') instead.';
- return false;
- }
- $offset += 4;
- $fmt_size = getid3_lib::LittleEndian2Int(substr($rawdata, $offset, 4));
- $offset += 4;
-
- $ThisFileInfo['la']['raw']['format'] = getid3_lib::LittleEndian2Int(substr($rawdata, $offset, 2));
- $offset += 2;
-
- $ThisFileInfo['la']['channels'] = getid3_lib::LittleEndian2Int(substr($rawdata, $offset, 2));
- $offset += 2;
- if ($ThisFileInfo['la']['channels'] == 0) {
- $ThisFileInfo['error'][] = 'Corrupt LA file: channels == zero';
- return false;
- }
-
- $ThisFileInfo['la']['sample_rate'] = getid3_lib::LittleEndian2Int(substr($rawdata, $offset, 4));
- $offset += 4;
- if ($ThisFileInfo['la']['sample_rate'] == 0) {
- $ThisFileInfo['error'][] = 'Corrupt LA file: sample_rate == zero';
- return false;
- }
-
- $ThisFileInfo['la']['bytes_per_second'] = getid3_lib::LittleEndian2Int(substr($rawdata, $offset, 4));
- $offset += 4;
- $ThisFileInfo['la']['bytes_per_sample'] = getid3_lib::LittleEndian2Int(substr($rawdata, $offset, 2));
- $offset += 2;
- $ThisFileInfo['la']['bits_per_sample'] = getid3_lib::LittleEndian2Int(substr($rawdata, $offset, 2));
- $offset += 2;
-
- $ThisFileInfo['la']['samples'] = getid3_lib::LittleEndian2Int(substr($rawdata, $offset, 4));
- $offset += 4;
-
- $ThisFileInfo['la']['raw']['flags'] = getid3_lib::LittleEndian2Int(substr($rawdata, $offset, 1));
- $offset += 1;
- $ThisFileInfo['la']['flags']['seekable'] = (bool) ($ThisFileInfo['la']['raw']['flags'] & 0x01);
- if ($ThisFileInfo['la']['version'] >= 0.4) {
- $ThisFileInfo['la']['flags']['high_compression'] = (bool) ($ThisFileInfo['la']['raw']['flags'] & 0x02);
- }
-
- $ThisFileInfo['la']['original_crc'] = getid3_lib::LittleEndian2Int(substr($rawdata, $offset, 4));
- $offset += 4;
-
- // mikeØbevin*de
- // Basically, the blocksize/seekevery are 61440/19 in La0.4 and 73728/16
- // in earlier versions. A seekpoint is added every blocksize * seekevery
- // samples, so 4 * int(totalSamples / (blockSize * seekEvery)) should
- // give the number of bytes used for the seekpoints. Of course, if seeking
- // is disabled, there are no seekpoints stored.
- if ($ThisFileInfo['la']['version'] >= 0.4) {
- $ThisFileInfo['la']['blocksize'] = 61440;
- $ThisFileInfo['la']['seekevery'] = 19;
- } else {
- $ThisFileInfo['la']['blocksize'] = 73728;
- $ThisFileInfo['la']['seekevery'] = 16;
- }
-
- $ThisFileInfo['la']['seekpoint_count'] = 0;
- if ($ThisFileInfo['la']['flags']['seekable']) {
- $ThisFileInfo['la']['seekpoint_count'] = floor($ThisFileInfo['la']['samples'] / ($ThisFileInfo['la']['blocksize'] * $ThisFileInfo['la']['seekevery']));
-
- for ($i = 0; $i < $ThisFileInfo['la']['seekpoint_count']; $i++) {
- $ThisFileInfo['la']['seekpoints'][] = getid3_lib::LittleEndian2Int(substr($rawdata, $offset, 4));
- $offset += 4;
- }
- }
-
- if ($ThisFileInfo['la']['version'] >= 0.3) {
-
- // 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.
- $ThisFileInfo['la']['footerstart'] = getid3_lib::LittleEndian2Int(substr($rawdata, $offset, 4));
- $offset += 4;
-
- if ($ThisFileInfo['la']['footerstart'] > $ThisFileInfo['filesize']) {
- $ThisFileInfo['warning'][] = 'FooterStart value points to offset '.$ThisFileInfo['la']['footerstart'].' which is beyond end-of-file ('.$ThisFileInfo['filesize'].')';
- $ThisFileInfo['la']['footerstart'] = $ThisFileInfo['filesize'];
- }
-
- } else {
-
- // La v0.2 didn't have FooterStart value
- $ThisFileInfo['la']['footerstart'] = $ThisFileInfo['avdataend'];
-
- }
-
- if ($ThisFileInfo['la']['footerstart'] < $ThisFileInfo['avdataend']) {
- if ($RIFFtempfilename = tempnam('*', 'id3')) {
- if ($RIFF_fp = fopen($RIFFtempfilename, 'w+b')) {
- $RIFFdata = 'WAVE';
- if ($ThisFileInfo['la']['version'] == 0.2) {
- $RIFFdata .= substr($rawdata, 12, 24);
- } else {
- $RIFFdata .= substr($rawdata, 16, 24);
- }
- if ($ThisFileInfo['la']['footerstart'] < $ThisFileInfo['avdataend']) {
- fseek($fd, $ThisFileInfo['la']['footerstart'], SEEK_SET);
- $RIFFdata .= fread($fd, $ThisFileInfo['avdataend'] - $ThisFileInfo['la']['footerstart']);
- }
- $RIFFdata = 'RIFF'.getid3_lib::LittleEndian2String(strlen($RIFFdata), 4, false).$RIFFdata;
- fwrite($RIFF_fp, $RIFFdata, strlen($RIFFdata));
- $dummy = $ThisFileInfo;
- $dummy['filesize'] = strlen($RIFFdata);
- $dummy['avdataoffset'] = 0;
- $dummy['avdataend'] = $dummy['filesize'];
-
- $riff = new getid3_riff($RIFF_fp, $dummy);
- if (empty($dummy['error'])) {
- $ThisFileInfo['riff'] = $dummy['riff'];
- } else {
- $ThisFileInfo['warning'][] = 'Error parsing RIFF portion of La file: '.implode($dummy['error']);
- }
- unset($riff);
- unset($dummy);
- fclose($RIFF_fp);
- }
- unlink($RIFFtempfilename);
- }
- }
-
- // $ThisFileInfo['avdataoffset'] should be zero to begin with, but just in case it's not, include the addition anyway
- $ThisFileInfo['avdataend'] = $ThisFileInfo['avdataoffset'] + $ThisFileInfo['la']['footerstart'];
- $ThisFileInfo['avdataoffset'] = $ThisFileInfo['avdataoffset'] + $offset;
-
- //$ThisFileInfo['la']['codec'] = RIFFwFormatTagLookup($ThisFileInfo['la']['raw']['format']);
- $ThisFileInfo['la']['compression_ratio'] = (float) (($ThisFileInfo['avdataend'] - $ThisFileInfo['avdataoffset']) / $ThisFileInfo['la']['uncompressed_size']);
- $ThisFileInfo['playtime_seconds'] = (float) ($ThisFileInfo['la']['samples'] / $ThisFileInfo['la']['sample_rate']) / $ThisFileInfo['la']['channels'];
- if ($ThisFileInfo['playtime_seconds'] == 0) {
- $ThisFileInfo['error'][] = 'Corrupt LA file: playtime_seconds == zero';
- return false;
- }
-
- $ThisFileInfo['audio']['bitrate'] = ($ThisFileInfo['avdataend'] - $ThisFileInfo['avdataoffset']) * 8 / $ThisFileInfo['playtime_seconds'];
- //$ThisFileInfo['audio']['codec'] = $ThisFileInfo['la']['codec'];
- $ThisFileInfo['audio']['bits_per_sample'] = $ThisFileInfo['la']['bits_per_sample'];
- break;
-
- default:
- if (substr($rawdata, $offset, 2) == 'LA') {
- $ThisFileInfo['error'][] = 'This version of getID3() (v'.GETID3_VERSION.') doesn\'t support LA version '.substr($rawdata, $offset + 2, 1).'.'.substr($rawdata, $offset + 3, 1).' which this appears to be - check http://getid3.sourceforge.net for updates.';
- } else {
- $ThisFileInfo['error'][] = 'Not a LA (Lossless-Audio) file';
- }
- return false;
- break;
- }
-
- $ThisFileInfo['audio']['channels'] = $ThisFileInfo['la']['channels'];
- $ThisFileInfo['audio']['sample_rate'] = (int) $ThisFileInfo['la']['sample_rate'];
- $ThisFileInfo['audio']['encoder'] = 'LA v'.$ThisFileInfo['la']['version'];
-
- return true;
- }
-
-}
-
-
-?> \ No newline at end of file
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-14 16:40:10 +0000