1 files changed, 93 insertions, 0 deletions
diff --git a/node_modules/ffmpeg-static/install.js b/node_modules/ffmpeg-static/install.js
new file mode 100644
index 0000000..d65ed6e
--- /dev/null
+++ b/node_modules/ffmpeg-static/install.js
@@ -0,0 +1,93 @@
+'use strict'
+
+var fs = require("fs");
+var os = require("os");
+var ProgressBar = require("progress");
+var get = require("simple-get");
+var ffmpegPath = require(".");
+var pkg = require("./package");
+
+const exitOnError = (err) => {
+  console.error(err)
+  process.exit(1)
+}
+const exitOnErrorOrWarnWith = (msg) => (err) => {
+  if (err.statusCode === 404) console.warn(msg)
+  else exitOnError(err)
+}
+
+if (!ffmpegPath) {
+  exitOnError('ffmpeg-static install failed: No binary found for architecture')
+}
+
+const noop = () => {}
+function downloadFile(url, destinationPath, progressCallback = noop) {
+  let fulfill, reject;
+  let totalBytes = 0;
+
+  const promise = new Promise((x, y) => {
+    fulfill = x;
+    reject = y;
+  });
+
+  get(url, function(err, response) {
+    if (err || response.statusCode !== 200) {
+      err = err || new Error('Download failed.')
+      if (response) {
+        err.url = url
+        err.statusCode = response.statusCode
+      }
+      reject(err)
+      return;
+    }
+
+    const file = fs.createWriteStream(destinationPath);
+    file.on("finish", () => fulfill());
+    file.on("error", error => reject(error));
+    response.pipe(file);
+
+    totalBytes = parseInt(response.headers["content-length"], 10);
+
+    if (progressCallback) {
+      response.on("data", function(chunk) {
+        progressCallback(chunk.length, totalBytes);
+      });
+    }
+  });
+
+  return promise;
+}
+
+let progressBar = null;
+function onProgress(deltaBytes, totalBytes) {
+  if (!progressBar) {
+    progressBar = new ProgressBar(`Downloading ffmpeg [:bar] :percent :etas `, {
+      complete: "|",
+      incomplete: " ",
+      width: 20,
+      total: totalBytes
+    });
+  }
+
+  progressBar.tick(deltaBytes);
+}
+
+const release = (
+  process.env.FFMPEG_BINARY_RELEASE ||
+  pkg['ffmpeg-static'].binary_release
+)
+const downloadUrl = `https://github.com/eugeneware/ffmpeg-static/releases/download/${release}/${os.platform()}-${os.arch()}`
+const readmeUrl = `${downloadUrl}.README`
+const licenseUrl = `${downloadUrl}.LICENSE`
+
+downloadFile(downloadUrl, ffmpegPath, onProgress)
+.then(() => {
+  fs.chmodSync(ffmpegPath, 0o755) // make executable
+})
+.catch(exitOnError)
+
+.then(() => downloadFile(readmeUrl, `${ffmpegPath}.README`))
+.catch(exitOnErrorOrWarnWith('Failed to download the ffmpeg README.'))
+
+.then(() => downloadFile(licenseUrl, `${ffmpegPath}.LICENSE`))
+.catch(exitOnErrorOrWarnWith('Failed to download the ffmpeg LICENSE.'))