[Mono-bugs] [Bug 663861] New: new AVAssetReaderAudioMixOutput(songAsset.Tracks, null) throws exception
bugzilla_noreply at novell.com
bugzilla_noreply at novell.com
Tue Jan 11 22:54:07 EST 2011
https://bugzilla.novell.com/show_bug.cgi?id=663861
https://bugzilla.novell.com/show_bug.cgi?id=663861#c0
Summary: new AVAssetReaderAudioMixOutput(songAsset.Tracks,
null) throws exception
Classification: Mono
Product: MonoTouch
Version: SVN
Platform: Other
OS/Version: Other
Status: NEW
Severity: Critical
Priority: P5 - None
Component: Class Libraries
AssignedTo: gnorton at novell.com
ReportedBy: nikolai at eodsoft.com
QAContact: mono-bugs at lists.ximian.com
Found By: ---
Blocker: ---
User-Agent: Mozilla/5.0 (Macintosh; U; Intel Mac OS X 10.6; en-US;
rv:1.9.2.13) Gecko/20101203 Firefox/3.6.13
Exception says "Argument cannot be null".
The following fails too:
AVAssetReaderOutput assetReaderOutput = new
AVAssetReaderAudioMixOutput(songAsset.Tracks, new NSDictionary());
MonoTouchException: "Objective-C exception thrown. Name:
NSInvalidArgumentException Reason: *** +[AVAudioOutputSettings
_outputSettingsWithOutputSettingsDictionary:exceptionReason:] invalid parameter
not satisfying: [outputSettingsDictionary count] > 0"
Reproducible: Always
Steps to Reproduce:
1. Compile and run:
MPMediaItem curItem =
MPMusicPlayerController.iPodMusicPlayer.NowPlayingItem;
NSUrl url =
(NSUrl)curItem.ValueForProperty(MPMediaItemProperty.AssetUrl);
NSDictionary dict = new NSDictionary();
AVUrlAsset songAsset = AVUrlAsset.FromUrl(assetUrl, dict);
NSError error = new NSError(NSObjectFlag.Empty);
AVAssetReader assetReader = AVAssetReader._FromAsset(songAsset,
error.Handle);
if (assetReader == null)
{
Console.WriteLine(error.LocalizedDescription);
return;
}
AVAssetReaderOutput assetReaderOutput = new
AVAssetReaderAudioMixOutput(songAsset.Tracks, null);
2. Exception thrown
Actual Results:
Exception thrown
Expected Results:
Should be supported as per iOS documentation:
audioSettings
The audio settings to be used for audio output; the dictionary must contain
values for keys in AVAudioSettings.h (linear PCM only).
Pass nil if you want to receive decoded samples in a convenient uncompressed
format, with properties determined according to the properties of the specified
audio tracks.
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