From 45e5a60962fae54979f1cda66c68a0e022ac1cfa Mon Sep 17 00:00:00 2001
From: Michael Jumper <zhangmaike@users.sourceforge.net>
Date: Wed, 12 Sep 2012 02:48:24 -0700
Subject: [PATCH] Explicitly detect mimetype support using test sounds.
 Fallback to canPlayType().

---
 .../net/basic/resource/BasicResource.java     |   4 +
 guacamole/src/main/webapp/WEB-INF/web.xml     |   9 ++
 .../src/main/webapp/scripts/interface.js      |  95 +++++++++++++++++-
 guacamole/src/main/webapp/sounds/silence.mp3  | Bin 0 -> 2506 bytes
 guacamole/src/main/webapp/sounds/silence.ogg  | Bin 0 -> 5267 bytes
 guacamole/src/main/webapp/sounds/silence.wav  | Bin 0 -> 17684 bytes
 6 files changed, 105 insertions(+), 3 deletions(-)
 create mode 100644 guacamole/src/main/webapp/sounds/silence.mp3
 create mode 100644 guacamole/src/main/webapp/sounds/silence.ogg
 create mode 100644 guacamole/src/main/webapp/sounds/silence.wav

diff --git a/guacamole/src/main/java/org/glyptodon/guacamole/net/basic/resource/BasicResource.java b/guacamole/src/main/java/org/glyptodon/guacamole/net/basic/resource/BasicResource.java
index ebf1892ab..6c0fe335a 100644
--- a/guacamole/src/main/java/org/glyptodon/guacamole/net/basic/resource/BasicResource.java
+++ b/guacamole/src/main/java/org/glyptodon/guacamole/net/basic/resource/BasicResource.java
@@ -46,6 +46,7 @@ public class BasicResource extends AuthenticatingHttpServlet {
         int index = Integer.parseInt(indexString);
         String name  = request.getParameter("name");
         String tunnelUUID = request.getParameter("uuid");
+        String mimetype = request.getParameter("mimetype");
         
         // Get session
         GuacamoleSession session;
@@ -68,6 +69,9 @@ public class BasicResource extends AuthenticatingHttpServlet {
         if (name != null)
             response.setHeader("Content-Disposition", "attachment; filename=" + name);
         
+        // If mimetype provided, reflect back
+        response.setContentType(mimetype);
+        
         // Get output stream and pipe
         OutputStream out = response.getOutputStream();
         GuacamoleResourcePipe resourcePipe = tunnel.getResourcePipe(index);
diff --git a/guacamole/src/main/webapp/WEB-INF/web.xml b/guacamole/src/main/webapp/WEB-INF/web.xml
index 0837d5f11..94d79fd38 100644
--- a/guacamole/src/main/webapp/WEB-INF/web.xml
+++ b/guacamole/src/main/webapp/WEB-INF/web.xml
@@ -88,4 +88,13 @@
         <url-pattern>/resource</url-pattern>
     </servlet-mapping>
 
+    <mime-mapping>
+        <extension>mp3</extension>
+        <mime-type>audio/mpeg</mime-type>
+    </mime-mapping>
+    <mime-mapping>
+        <extension>ogg</extension>
+        <mime-type>audio/ogg</mime-type>
+    </mime-mapping>
+
 </web-app>
diff --git a/guacamole/src/main/webapp/scripts/interface.js b/guacamole/src/main/webapp/scripts/interface.js
index 88224a2bd..8900b8e7b 100644
--- a/guacamole/src/main/webapp/scripts/interface.js
+++ b/guacamole/src/main/webapp/scripts/interface.js
@@ -62,6 +62,9 @@ var GuacamoleUI = {
 
 };
 
+// Supported mimetypes
+GuacamoleUI.supportedAudio = {};
+
 // Constant UI initialization and behavior
 (function() {
 
@@ -485,6 +488,33 @@ var GuacamoleUI = {
         GuacamoleUI.eventTarget.style.top = window.pageYOffset + "px";
     });
 
+    function testAudio(url, mimetype) {
+
+        // If browser says we can't play it, don't try
+        var audio = new Audio();
+        if (!audio.canPlayType(mimetype))
+            return;
+
+        // Otherwise, test
+        audio.src = url;
+
+        // On error, explicitly unsupported
+        audio.addEventListener("error", function() {
+            GuacamoleUI.supportedAudio[mimetype] = false;
+        });
+
+        // On successful play, explicitly supported
+        audio.addEventListener("ended", function() {
+            GuacamoleUI.supportedAudio[mimetype] = true;
+        });
+
+        audio.play();
+
+    }
+
+    testAudio("sounds/silence.mp3", "audio/mpeg");
+    testAudio("sounds/silence.ogg", "audio/ogg");
+
 })();
 
 // Tie UI events / behavior to a specific Guacamole client
@@ -792,9 +822,10 @@ GuacamoleUI.attach = function(guac) {
             
                 // Start download
                 GuacamoleUI.download.src =
-                    "resource?index=" + index
-                          + "&name="  + name
-                          + "&uuid="  + uuid;
+                    "resource?index="    + index
+                          + "&name="     + name
+                          + "&uuid="     + uuid
+                          + "&mimetype=" + mimetypes[0];
                     
             }
 
@@ -805,6 +836,64 @@ GuacamoleUI.attach = function(guac) {
 
         }
 
+        // Audio resource
+        else if (uri.substring(0, 8) == "audio://") {
+
+            // Create audio playing object
+            var audio = new Audio();
+            
+            // Determine a supported mimetype
+            var mimetype = null;
+            for (var i=0; i<mimetypes.length; i++) {
+
+                // Don't bother if support was not detected
+                if (GuacamoleUI.supportedAudio[mimetypes[i]] == false)
+                    continue;
+                
+                // If mimetype support explicitly detected, use it
+                if (GuacamoleUI.supportedAudio[mimetypes[i]]) {
+                    mimetype = mimetypes[i];
+                    break;
+                }
+
+                // Get level of support for mimetype
+                var certainty = audio.canPlayType(mimetypes[i]);
+
+                // If likely to have support, use that
+                if (certainty == "probably") {
+                    mimetype = mimetypes[i];
+                    break;
+                }
+
+                // Otherwise, choose if not already chosen, but keep trying
+                else if (certainty == "maybe" && !mimetype)
+                    mimetype = mimetypes[i];
+
+            }
+
+            // If unable to find a mimetype, reject
+            if (!mimetype)
+                guac.rejectResource(index);
+
+            // Otherwise, start playing stream
+            else {
+
+                // Accept file resource
+                guac.acceptResource(index, mimetype);
+            
+                // Play audio stream
+                audio.src = 
+                    "resource?index="    + index
+                          + "&name="     + name
+                          + "&uuid="     + uuid
+                          + "&mimetype=" + mimetype;
+
+                audio.play();
+
+            }
+
+        }
+
         // Otherwise, reject (unknown URI)
         else
             guac.rejectResource(index);
diff --git a/guacamole/src/main/webapp/sounds/silence.mp3 b/guacamole/src/main/webapp/sounds/silence.mp3
new file mode 100644
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diff --git a/guacamole/src/main/webapp/sounds/silence.ogg b/guacamole/src/main/webapp/sounds/silence.ogg
new file mode 100644
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