Ensure recording directory is writable before starting

Add a check and uncaught execption to ensure that the recording dir is
writable. This at least prevents a recording from appearing to start
when it immediately fails because of permission issues.

Change-Id: I70da1e9219ed95fd1b93e4cf179478d9579d55ae

1 files changed, 5 insertions, 1 deletions

diff --git a/src/org/cyanogenmod/screencast/RecordingDevice.java b/src/org/cyanogenmod/screencast/RecordingDevice.java
index 1424666..4806890 100644
--- a/src/org/cyanogenmod/screencast/RecordingDevice.java
+++ b/src/org/cyanogenmod/screencast/RecordingDevice.java
@@ -210,7 +210,11 @@ class RecordingDevice extends EncoderDevice {
 
         @Override
         public void encode() throws Exception {
-            path.getParentFile().mkdirs();
+            File recordingDir = path.getParentFile();
+            recordingDir.mkdirs();
+            if (!(recordingDir.exists() && recordingDir.canWrite())) {
+                throw new SecurityException("Cannot write to " + recordingDir);
+            }
             MediaMuxer muxer = new MediaMuxer(path.getAbsolutePath(), MediaMuxer.OutputFormat.MUXER_OUTPUT_MPEG_4);
             boolean muxerStarted = false;
             int trackIndex = -1;