记录在Chrome浏览器到服务器保存WAV文件

问题描述

我已经看到了这个在这里和其他地方的许多部分答案，但我非常新手codeR，我希望能进行一次彻底的解决方案。我已经能够建立记录从一台笔记本电脑麦克风音频输入Chrome Canary版和可以使用recorder.js，相对轻松地设置录制.wav文件并保存在本地的，一拉（五29.x）：

I've seen many partial answers to this here and elsewhere, but I am very much a novice coder and am hoping for a thorough solution. I have been able to set up recording audio from a laptop mic in Chrome Canary (v. 29.x) and can, using recorder.js, relatively easily set up recording a .wav file and saving that locally, a la:

http://webaudiodemos.appspot.com/AudioRecorder/index.html

不过，我需要能够将文件保存到我已经运行的Linux服务器。这是实际的BLOB记录的数据发送到服务器，并保存它作为一个.wav文件，该文件赶上我。我没有必要的PHP和/或AJAX的知识，有关如何将BLOB保存到一个URL和处理，因为我一直在考虑要明白，有使保存该.wav文件挑战确实在Linux二进制文件。我会非常欢迎任何指针朝着正确的方向。

But I need to be able to save the file onto a Linux server I have running. It's the actual sending of the blob recorded data to the server and saving it out as a .wav file that's catching me up. I don't have the requisite PHP and/or AJAX knowledge about how to save the blob to a URL and to deal, as I have been given to understand, with binaries on Linux that make saving that .wav file challenging indeed. I'd greatly welcome any pointers in the right direction.

推荐答案

客户端JavaScript函数上传WAV BLOB：

Client side JavaScript function to upload the WAV blob:

function upload(blob) {
  var xhr=new XMLHttpRequest();
  xhr.onload=function(e) {
      if(this.readyState === 4) {
          console.log("Server returned: ",e.target.responseText);
      }
  };
  var fd=new FormData();
  fd.append("that_random_filename.wav",blob);
  xhr.open("POST","<url>",true);
  xhr.send(fd);
}

PHP文件 upload_wav.php ：

<?php
// get the temporary name that PHP gave to the uploaded file
$tmp_filename=$_FILES["that_random_filename.wav"]["tmp_name"];
// rename the temporary file (because PHP deletes the file as soon as it's done with it)
rename($tmp_filename,"/tmp/uploaded_audio.wav");
?>

之后就可以播放的文件 /tmp/uploaded_audio.wav 。

但要记住！ /tmp/uploaded_audio.wav 由用户 WWW的数据，及（由PHP默认）创建不可读由用户。要自动添加相应的权限，追加行

But remember! /tmp/uploaded_audio.wav was created by the user www-data, and (by PHP default) is not readable by the user. To automate adding the appropriate permissions, append the line

chmod("/tmp/uploaded_audio.wav",0755);

到PHP的端（PHP结束标记之前＆GT; ）。

希望这有助于。

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