Question

我正在尝试运行PNaCl ffmpeg端口并运行一些基本命令。很遗憾，我只是设法在 index.html ：

中打印此错误

＆GT; NaCl模块加载失败：Nexe在启动期间崩溃

我从here获得了预建端口，我的Chrome版本为43.0.2357.132。

ffmpeg.nmf

{
  "program": {
    "portable": {
      "pnacl-translate": {
        "url": "ffmpeg"
      }
    }
  }
}

在下载的端口包的ffmpeg路径中找到的

payload\bin文件没有.pexe扩展名。我认为只要nacl manifest没有指定它就不会有问题。正确？

的index.html

<!DOCTYPE html>
<html>
<head>
  <script type="text/javascript" src="main.js"></script>
</head>

<body>
  <h2>Status: <code id="statusField">LOADING</code></h2>

  <div id="listener">

    <script type="text/javascript">
      var listener = document.getElementById('listener');
      listener.addEventListener('load', moduleLoadEventHandler, true);
      listener.addEventListener('message', messageEventHandler, true);
      listener.addEventListener('error', errorEventHandler, true);
      listener.addEventListener('crash', crashEventHandler, true);
    </script>

    <embed id="ffmpeg" 
      width=0 height=0
      src="ffmpeg.nmf"
      type="application/x-pnacl"/>

  </div>

  <div id="logs"></div>
</body>

</html>

main.js

var ffmpegModule = null;
var logMessageArray = [];
var kMaxLogMessageLength = 20;

function domContentLoadEventHandler() {
    ffmpegModule = document.getElementById('ffmpeg');
}

function moduleLoadEventHandler() {
    ffmpegModule = document.getElementById('ffmpeg');
    setStatus('SUCCESS');
}

function messageEventHandler(eventArgs) {
    logMessage('Message received: ' + eventArgs.data);
}

function errorEventHandler(eventArgs) { //Function that prints the error
    setStatus('ERROR [' + ffmpegModule.lastError + ']');
}

function crashEventHandler() {
    if (ffmpegModule.exitStatus == -1) {
        setStatus('CRASHED');
    } 
    else {
        setStatus('EXITED [' + ffmpegModule.exitStatus + ']');
    }
    if (typeof window.handleCrash !== 'undefined') {
        window.handleCrash(ffmpegModule.lastError);
    }
}

function setStatus(statusText) {
    var statusField = document.getElementById('statusField');
    statusField.innerHTML = statusText;
}

function logMessage(message) {
    logMessageArray.push(message);
    if (logMessageArray.length > kMaxLogMessageLength) {
        logMessageArray.shift();
    }
    document.getElementById('logs').textContent = logMessageArray.join('\n');
}

document.addEventListener("DOMContentLoaded", domContentLoadEventHandler);

生成文件

我也从nacl_sdk教程中将这个小makefile“偷走”。

HTTPD_PY := python $(NACL_SDK_ROOT)/tools/httpd.py

all: serve

.PHONY: serve
serve:
    $(HTTPD_PY) -C $(CURDIR) --no-dir-check

启动时PNaCl ffmpeg端口崩溃

0 个答案: