Toss out fluent-ffmpeg in favor of own parser

lib/ffmpeg.js

@@ -1,20 +1,6 @@
 var Logger = require("./logger");
 var Config = require("./config");
-var ffprobe;
-var enabled = false;
-
-function init() {
-    if (Config.get("ffmpeg.enabled")) {
-        try {
-            ffprobe = require("fluent-ffmpeg").ffprobe;
-            Logger.syslog.log("Enabling raw file support with fluent-ffmpeg");
-            enabled = true;
-        } catch (e) {
-            Logger.errlog.log("Failed to load fluent-ffmpeg.  Did you remember to " +
-                              "execute `npm install fluent-ffmpeg` ?");
-        }
-    }
-}
+var spawn = require("child_process").spawn;
 
 var acceptedCodecs = {
     "mov/h264": true,
@@ -34,11 +20,7 @@ var audioOnlyContainers = {
 };
 
 exports.query = function (filename, cb) {
-    if (!ffprobe) {
-        init();
-    }
-
-    if (!enabled) {
+    if (!Config.get("ffmpeg.enabled")) {
         return cb("Raw file playback is not enabled on this server");
     }
 
@@ -49,7 +31,11 @@ exports.query = function (filename, cb) {
 
     ffprobe(filename, function (err, meta) {
         if (err) {
-            return cb("Unable to query file data with ffmpeg");
+            if (meta.stderr && meta.stderr.match(/Protocol not found/)) {
+                return cb("Link uses a protocol unsupported by this server's ffmpeg");
+            } else {
+                return cb("Unable to query file data with ffmpeg");
+            }
         }
 
         meta = parse(meta);
@@ -92,7 +78,7 @@ exports.query = function (filename, cb) {
                       filename.split(":")[0] + " protocol.");
         } else {
             return cb("Parsed metadata did not contain a valid video or audio stream.  " +
-                      "Either the file is invalid or it has a format unsupported by " + 
+                      "Either the file is invalid or it has a format unsupported by " +
                       "this server's version of ffmpeg.");
         }
     });
@@ -132,3 +118,46 @@ function parse(meta) {
     data.seconds = Math.ceil(parseFloat(meta.format.duration));
     return data;
 }
+
+function ffprobe(filename, cb) {
+    var ff = spawn("ffprobe", ["-show_streams", "-show_format", filename]);
+
+    var outbuf = "";
+    var errbuf = "";
+    ff.stdout.on("data", function (data) {
+        outbuf += data;
+    });
+    ff.stderr.on("data", function (data) {
+        errbuf += data;
+    });
+
+    ff.on("close", function (code) {
+        if (code !== 0) {
+            return cb("ffprobe exited with nonzero exit code", { stderr: errbuf });
+        }
+
+        var lines = outbuf.split("\n");
+        var streams = [];
+        var format = {};
+        var data = {};
+        lines.forEach(function (line) {
+            if (line.match(/\[stream\]|\[format\]/i)) {
+                return;
+            } else if (line.match(/\[\/stream\]/i)) {
+                streams.push(data);
+                data = {};
+            } else if (line.match(/\[\/format\]/i)) {
+                format = data;
+                data = {};
+            } else {
+                var kv = line.split("=");
+                data[kv[0]] = kv[1];
+            }
+        });
+
+        cb(null, {
+            streams: streams,
+            format: format
+        });
+    });
+}

lib/server.js

@@ -9,7 +9,7 @@ The above copyright notice and this permission notice shall be included in all c
 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 */
 
-const VERSION = "3.2.1";
+const VERSION = "3.2.2";
 var singleton = null;
 var Config = require("./config");