我有一个用于流式传输音频文件的网站。主要是MP3和OGG。几个月以来,我自己处理(PHP)蒸汽部分(在它是 apache2 之前)。首先,我使用多媒体音频文件的切片二进制响应(用于内存分配)进行正常的 200 OK 响应。它工作正常,但我的所有音频都获得了 Infinity 持续时间。根据这个问题,我昨天更新了流媒体部分。
现在,我遇到了我能想象到的最奇怪的错误之一。我的代码重构在 MP3 上运行得非常好,但在 OGG 上却不行......
这是我的 Stream 课程。
<?php
class Stream extends Response
{
protected $filepath;
protected $delete;
protected $range = ['from' => 0, 'to' => null];
public function __construct($filePath, $delete = false, $range = NULL)
{
$this->delete = $delete;
$finfo = finfo_open(FILEINFO_MIME_TYPE);
$mimeType = finfo_file($finfo, $filePath);
$size = filesize($filePath);
$this->headers['Content-Type'] = $mimeType;
$this->headers['Content-Length'] = $size;
$this->headers['Accept-Ranges'] = 'bytes';
$this->headers['Content-Transfer-Encoding'] = 'binary';
unset($finfo, $mimeType);
$this->code = 200;
$this->range['to'] = $size - 1;
if ($range !== NULL) {
if (preg_match('/^bytes=\d*-\d*(,\d*-\d*)*$/i', $range) === false) {
$this->code = 416;
} else {
$ranges = explode(',', substr($range, 6));
foreach ($ranges as $rangee) {
$parts = explode('-', $rangee);
$this->range['from'] = intval($parts[0]);
$this->range['to'] = intval($parts[1]);
if (empty($this->range['to'])) {
$this->range['to'] = $size - 1;
}
if ($this->range['from'] > $this->range['to'] || $this->range['to'] >= $size) {
$this->code = 416;
}
}
$this->code = 206;
}
}
if ($this->code === 416) {
$this->headers = ['Content-Range' => 'bytes */{' . $size . '}'];
} elseif ($this->code === 206) {
$this->headers['Content-Range'] = 'bytes {' . $this->range['from'] . '}-{' . $this->range['to'] . '}/{' . $size . '}';
}
$this->filepath = $filePath;
}
public function show()
{
http_response_code($this->code);
foreach ($this->headers as $header => $value) {
header($header . ': ' . $value);
}
$file = fopen($this->filepath, 'r');
fseek($file, $this->range['from']);
$interval = $this->range['to'] - $this->range['from'];
$outputBufferInterval = 4 * 1000;
if ($interval < $outputBufferInterval) {
$outputBufferInterval = $interval;
}
ob_start();
while ($interval > 0) {
echo fread($file, $outputBufferInterval);
$interval -= $outputBufferInterval;
ob_flush();
}
fclose($file);
ob_end_clean();
if ($this->delete) {
unlink($this->filepath);
}
}
}
我对 HTTP_RANGE 有点困惑。谢谢,