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#13 #24 Fix invalid duration due to difference in first N frames. Solution: read few frames and compute duration based on the last frame data.

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wapmorgan
2023-05-28 21:04:09 +03:00
parent cbbd6b306b
commit 534c3052d4
3 changed files with 16 additions and 5 deletions
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13
src/Mp3Info.php
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@ -56,17 +56,17 @@ class Mp3Info {
/**
* @var array
*/
static private $_bitRateTable;
private static $_bitRateTable;
/**
* @var array
*/
static private $_sampleRateTable;
private static $_sampleRateTable;
/**
* @var array
*/
static private $_vbrOffsets = [
private static $_vbrOffsets = [
self::MPEG_1 => [21, 36],
self::MPEG_2 => [13, 21],
self::MPEG_25 => [13, 21],
@ -77,6 +77,8 @@ class Mp3Info {
*/
public static $headerSeekLimit = 2048;
public static $framesCountRead = 2;
/**
* @var int MPEG codec version (1 or 2 or 2.5 or undefined)
*/
@ -307,8 +309,11 @@ class Mp3Info {
/**
* First frame can lie. Need to fix in the future.
* @link https://github.com/wapmorgan/Mp3Info/issues/13#issuecomment-447470813
* Read first N frames
*/
$framesCount = $this->readMpegFrame($fp);
for ($i = 0; $i < self::$framesCountRead; $i++) {
$framesCount = $this->readMpegFrame($fp);
}
$this->_framesCount = $framesCount !== null
? $framesCount