async Task openAndPlay(VideoAudioPair item, int?offsetSeconds = null)
{
try
{
String name = item.Video != null ? item.Video.Name : item.Audio.Name;
EventAggregator.GetEvent <TitleChangedEvent>().Publish(name);
await OpenAndPlayCommand.ExecuteAsync(item);
if (offsetSeconds != null)
{
SeekCommand.Execute((double)offsetSeconds.Value);
}
}
catch (Exception)
{
}
}
async Task openAndPlay(VideoAudioPair item, int? offsetSeconds = null)
{
try
{
String name = item.Video != null ? item.Video.Name : item.Audio.Name;
EventAggregator.GetEvent<TitleChangedEvent>().Publish(name);
await OpenAndPlayCommand.ExecuteAsync(item);
if (offsetSeconds != null)
{
SeekCommand.Execute((double)offsetSeconds.Value);
}
}
catch (Exception)
{
}
}
public VideoViewModel(IEventAggregator eventAggregator)
{
EventAggregator = eventAggregator;
VideoSettings = ServiceLocator.Current.GetInstance(typeof(VideoSettingsViewModel)) as VideoSettingsViewModel;
VideoSettings.SettingsChanged += VideoSettings_SettingsChanged;
IsInitialized = false;
isInitializedSignal = new SemaphoreSlim(0, 1);
CurrentItem = new VideoAudioPair(null, null);
OpenAndPlayCommand = new AsyncCommand<VideoAudioPair>(async item =>
{
await isInitializedSignal.WaitAsync();
isInitializedSignal.Release();
try
{
CurrentItem = item;
String videoLocation = null;
String videoFormatName = null;
if (item.Video != null)
{
videoLocation = item.Video.Location;
if (item.Video is MediaStreamedItem)
{
if (item.Video.Metadata != null)
{
videoFormatName = MediaFormatConvert.mimeTypeToExtension(item.Video.Metadata.MimeType);
}
}
}
String audioLocation = null;
String audioFormatName = null;
if (item.Audio != null)
{
audioLocation = item.Audio.Location;
if (item.Audio is MediaStreamedItem && item.Audio.Metadata != null)
{
audioFormatName = MediaFormatConvert.mimeTypeToExtension(item.Audio.Metadata.MimeType);
}
}
CloseCommand.IsExecutable = true;
IsLoading = true;
await VideoPlayer.openAndPlay(videoLocation, videoFormatName, audioLocation, audioFormatName);
}
catch (OperationCanceledException)
{
CloseCommand.IsExecutable = false;
throw;
}
catch (Exception e)
{
CloseCommand.IsExecutable = false;
MessageBox.Show("Error opening " + item.Video.Location + "\n\n" + e.Message, "Error", MessageBoxButton.OK, MessageBoxImage.Error);
throw;
}
finally
{
IsLoading = false;
}
EventAggregator.GetEvent<TitleChangedEvent>().Publish(CurrentItem.IsEmpty ? null : CurrentItem.Name);
});
PlayCommand = new AsyncCommand(async () =>
{
if (VideoState == VideoPlayerControl.VideoState.CLOSED && !CurrentItem.IsEmpty)
{
await openAndPlay(CurrentItem);
}
else if (VideoState == VideoPlayerControl.VideoState.OPEN || VideoState == VideoPlayerControl.VideoState.PAUSED)
{
VideoPlayer.play();
}
}, false);
PauseCommand = new Command(() => {
VideoPlayer.pause();
}, false);
CloseCommand = new AsyncCommand(async () => {
await VideoPlayer.close();
}, false);
SeekCommand = new AsyncCommand<double>(async (pos) =>
{
await VideoPlayer.seek(pos);
}, false);
StepForwardCommand = new AsyncCommand(async () =>
{
StepForwardCommand.IsExecutable = false;
double timeStamp = VideoPlayer.getFrameSeekTimeStamp() + Settings.Default.VideoStepDurationSeconds;
await VideoPlayer.seek(timeStamp, VideoLib.VideoPlayer.SeekKeyframeMode.SEEK_FORWARDS);
StepForwardCommand.IsExecutable = true;
}, false);
StepBackwardCommand = new AsyncCommand(async () =>
{
StepBackwardCommand.IsExecutable = false;
double timeStamp = VideoPlayer.getFrameSeekTimeStamp() - Settings.Default.VideoStepDurationSeconds;
await VideoPlayer.seek(timeStamp, VideoLib.VideoPlayer.SeekKeyframeMode.SEEK_BACKWARDS);
StepBackwardCommand.IsExecutable = true;
}, false);
FrameByFrameCommand = new Command(() => {
VideoPlayer.displayNextFrame();
}, false);
CutVideoCommand = new Command(() =>
{
String outputPath;
if(FileUtils.isUrl(VideoPlayer.VideoLocation)) {
outputPath = MediaFileWatcher.Instance.Path;
} else {
outputPath = FileUtils.getPathWithoutFileName(VideoPlayer.VideoLocation);
}
VideoTranscodeView videoTranscode = new VideoTranscodeView();
videoTranscode.ViewModel.Items.Add(CurrentItem);
videoTranscode.ViewModel.Title = "Cut Video";
videoTranscode.ViewModel.IconUri = "/MediaViewer;component/Resources/Icons/videocut.ico";
videoTranscode.ViewModel.OutputPath = outputPath;
videoTranscode.ViewModel.IsTimeRangeEnabled = IsTimeRangeEnabled;
videoTranscode.ViewModel.StartTimeRange = startTimeRangeTimeStamp;
videoTranscode.ViewModel.EndTimeRange = endTimeRangeTimeStamp;
String extension = Path.GetExtension(VideoPlayer.VideoLocation).ToLower().TrimStart('.');
foreach(ContainerFormats format in Enum.GetValues(typeof(ContainerFormats))) {
if (format.ToString().ToLower().Equals(extension))
{
videoTranscode.ViewModel.ContainerFormat = format;
}
}
videoTranscode.ShowDialog();
}, false);
ScreenShotCommand = new Command(() =>
{
try
{
String screenShotName = FileUtils.removeIllegalCharsFromFileName(CurrentItem.Video.Name, " ");
screenShotName += "." + "jpg";
String path = null;
switch (Settings.Default.VideoScreenShotSaveMode)
{
case MediaViewer.Infrastructure.Constants.SaveLocation.Current:
{
path = MediaFileWatcher.Instance.Path;
break;
}
case MediaViewer.Infrastructure.Constants.SaveLocation.Ask:
{
DirectoryPickerView directoryPicker = new DirectoryPickerView();
DirectoryPickerViewModel vm = (DirectoryPickerViewModel)directoryPicker.DataContext;
directoryPicker.Title = "Screenshot Output Directory";
vm.SelectedPath = Settings.Default.VideoScreenShotLocation;
vm.PathHistory = Settings.Default.VideoScreenShotLocationHistory;
if (directoryPicker.ShowDialog() == true)
{
path = vm.SelectedPath;
}
else
{
return;
}
break;
}
case MediaViewer.Infrastructure.Constants.SaveLocation.Fixed:
{
path = Settings.Default.VideoScreenShotLocation;
break;
}
default:
break;
}
String fullPath = FileUtils.getUniqueFileName(path + "\\" + screenShotName);
VideoPlayer.createScreenShot(fullPath, VideoSettings.VideoScreenShotTimeOffset);
}
catch (Exception e)
{
MessageBox.Show("Error creating screenshot.\n\n" + e.Message, "Error", MessageBoxButton.OK, MessageBoxImage.Error);
}
}, false);
SetLeftMarkerCommand = new Command(() =>
{
if (IsTimeRangeEnabled == false)
{
IsTimeRangeEnabled = true;
}
// get the exact time of the current audio or video frame, positionseconds is potentially inaccurate
StartTimeRange = VideoPlayer.PositionSeconds;
startTimeRangeTimeStamp = VideoPlayer.getFrameSeekTimeStamp();
}, false);
SetRightMarkerCommand = new Command(() =>
{
if (IsTimeRangeEnabled == false)
{
IsTimeRangeEnabled = true;
StartTimeRange = VideoPlayer.PositionSeconds;
startTimeRangeTimeStamp = VideoPlayer.getFrameSeekTimeStamp();
}
else
{
EndTimeRange = VideoPlayer.PositionSeconds;
endTimeRangeTimeStamp = VideoPlayer.getFrameSeekTimeStamp();
}
}, false);
OpenLocationCommand = new Command(async () =>
{
VideoOpenLocationView openLocation = new VideoOpenLocationView();
bool? success = openLocation.ShowDialog();
if (success == true)
{
MediaItem video = null;
MediaItem audio = null;
if (!String.IsNullOrWhiteSpace(openLocation.ViewModel.VideoLocation))
{
video = MediaItemFactory.create(openLocation.ViewModel.VideoLocation);
MiscUtils.insertIntoHistoryCollection(Settings.Default.VideoLocationHistory, openLocation.ViewModel.VideoLocation);
}
if (!String.IsNullOrWhiteSpace(openLocation.ViewModel.AudioLocation))
{
audio = MediaItemFactory.create(openLocation.ViewModel.AudioLocation);
MiscUtils.insertIntoHistoryCollection(Settings.Default.AudioLocationHistory, openLocation.ViewModel.AudioLocation);
}
await openAndPlay(new VideoAudioPair(video, audio));
}
});
HasAudio = true;
VideoState = VideoPlayerControl.VideoState.CLOSED;
IsTimeRangeEnabled = false;
StartTimeRange = 0;
EndTimeRange = 0;
startTimeRangeTimeStamp = 0;
endTimeRangeTimeStamp = 0;
}
string getOutputLocation(VideoAudioPair input)
{
String outFilename;
if (FileUtils.isUrl(input.Location))
{
outFilename = FileUtils.removeIllegalCharsFromFileName(input.Name, " ");
if (String.IsNullOrEmpty(outFilename) || String.IsNullOrWhiteSpace(outFilename))
{
outFilename = "stream";
}
}
else
{
outFilename = Path.GetFileNameWithoutExtension(input.Location);
}
String outLocation = AsyncState.OutputPath + "\\" + outFilename;
outLocation += "." + AsyncState.ContainerFormat.ToString().ToLower();
outLocation = FileUtils.getUniqueFileName(outLocation);
return outLocation;
}
public VideoViewModel(IEventAggregator eventAggregator)
{
EventAggregator = eventAggregator;
VideoSettings = ServiceLocator.Current.GetInstance(typeof(VideoSettingsViewModel)) as VideoSettingsViewModel;
VideoSettings.SettingsChanged += VideoSettings_SettingsChanged;
IsInitialized = false;
isInitializedSignal = new SemaphoreSlim(0, 1);
CurrentItem = new VideoAudioPair(null, null);
OpenAndPlayCommand = new AsyncCommand <VideoAudioPair>(async item =>
{
await isInitializedSignal.WaitAsync();
isInitializedSignal.Release();
try
{
CurrentItem = item;
String videoLocation = null;
String videoFormatName = null;
if (item.Video != null)
{
videoLocation = item.Video.Location;
if (item.Video is MediaStreamedItem)
{
if (item.Video.Metadata != null)
{
videoFormatName = MediaFormatConvert.mimeTypeToExtension(item.Video.Metadata.MimeType);
}
}
}
String audioLocation = null;
String audioFormatName = null;
if (item.Audio != null)
{
audioLocation = item.Audio.Location;
if (item.Audio is MediaStreamedItem && item.Audio.Metadata != null)
{
audioFormatName = MediaFormatConvert.mimeTypeToExtension(item.Audio.Metadata.MimeType);
}
}
CloseCommand.IsExecutable = true;
IsLoading = true;
await VideoPlayer.openAndPlay(videoLocation, videoFormatName, audioLocation, audioFormatName);
}
catch (OperationCanceledException)
{
CloseCommand.IsExecutable = false;
throw;
}
catch (Exception e)
{
CloseCommand.IsExecutable = false;
MessageBox.Show("Error opening " + item.Video.Location + "\n\n" + e.Message, "Error", MessageBoxButton.OK, MessageBoxImage.Error);
throw;
}
finally
{
IsLoading = false;
}
EventAggregator.GetEvent <TitleChangedEvent>().Publish(CurrentItem.IsEmpty ? null : CurrentItem.Name);
});
PlayCommand = new AsyncCommand(async() =>
{
if (VideoState == VideoPlayerControl.VideoState.CLOSED && !CurrentItem.IsEmpty)
{
await openAndPlay(CurrentItem);
}
else if (VideoState == VideoPlayerControl.VideoState.OPEN || VideoState == VideoPlayerControl.VideoState.PAUSED)
{
VideoPlayer.play();
}
}, false);
PauseCommand = new Command(() => {
VideoPlayer.pause();
}, false);
CloseCommand = new AsyncCommand(async() => {
await VideoPlayer.close();
}, false);
SeekCommand = new AsyncCommand <double>(async(pos) =>
{
await VideoPlayer.seek(pos);
}, false);
StepForwardCommand = new AsyncCommand(async() =>
{
StepForwardCommand.IsExecutable = false;
double timeStamp = VideoPlayer.getFrameSeekTimeStamp() + Settings.Default.VideoStepDurationSeconds;
await VideoPlayer.seek(timeStamp, VideoLib.VideoPlayer.SeekKeyframeMode.SEEK_FORWARDS);
StepForwardCommand.IsExecutable = true;
}, false);
StepBackwardCommand = new AsyncCommand(async() =>
{
StepBackwardCommand.IsExecutable = false;
double timeStamp = VideoPlayer.getFrameSeekTimeStamp() - Settings.Default.VideoStepDurationSeconds;
await VideoPlayer.seek(timeStamp, VideoLib.VideoPlayer.SeekKeyframeMode.SEEK_BACKWARDS);
StepBackwardCommand.IsExecutable = true;
}, false);
FrameByFrameCommand = new Command(() => {
VideoPlayer.displayNextFrame();
}, false);
CutVideoCommand = new Command(() =>
{
String outputPath;
if (FileUtils.isUrl(VideoPlayer.VideoLocation))
{
outputPath = MediaFileWatcher.Instance.Path;
}
else
{
outputPath = FileUtils.getPathWithoutFileName(VideoPlayer.VideoLocation);
}
VideoTranscodeView videoTranscode = new VideoTranscodeView();
videoTranscode.ViewModel.Items.Add(CurrentItem);
videoTranscode.ViewModel.Title = "Cut Video";
videoTranscode.ViewModel.IconUri = "/MediaViewer;component/Resources/Icons/videocut.ico";
videoTranscode.ViewModel.OutputPath = outputPath;
videoTranscode.ViewModel.IsTimeRangeEnabled = IsTimeRangeEnabled;
videoTranscode.ViewModel.StartTimeRange = startTimeRangeTimeStamp;
videoTranscode.ViewModel.EndTimeRange = endTimeRangeTimeStamp;
String extension = Path.GetExtension(VideoPlayer.VideoLocation).ToLower().TrimStart('.');
foreach (ContainerFormats format in Enum.GetValues(typeof(ContainerFormats)))
{
if (format.ToString().ToLower().Equals(extension))
{
videoTranscode.ViewModel.ContainerFormat = format;
}
}
videoTranscode.ShowDialog();
}, false);
ScreenShotCommand = new Command(() =>
{
try
{
String screenShotName = FileUtils.removeIllegalCharsFromFileName(CurrentItem.Video.Name, " ");
screenShotName += "." + "jpg";
String path = null;
switch (Settings.Default.VideoScreenShotSaveMode)
{
case MediaViewer.Infrastructure.Constants.SaveLocation.Current:
{
path = MediaFileWatcher.Instance.Path;
break;
}
case MediaViewer.Infrastructure.Constants.SaveLocation.Ask:
{
DirectoryPickerView directoryPicker = new DirectoryPickerView();
DirectoryPickerViewModel vm = (DirectoryPickerViewModel)directoryPicker.DataContext;
directoryPicker.Title = "Screenshot Output Directory";
vm.SelectedPath = Settings.Default.VideoScreenShotLocation;
vm.PathHistory = Settings.Default.VideoScreenShotLocationHistory;
if (directoryPicker.ShowDialog() == true)
{
path = vm.SelectedPath;
}
else
{
return;
}
break;
}
case MediaViewer.Infrastructure.Constants.SaveLocation.Fixed:
{
path = Settings.Default.VideoScreenShotLocation;
break;
}
default:
break;
}
String fullPath = FileUtils.getUniqueFileName(path + "\\" + screenShotName);
VideoPlayer.createScreenShot(fullPath, VideoSettings.VideoScreenShotTimeOffset);
}
catch (Exception e)
{
MessageBox.Show("Error creating screenshot.\n\n" + e.Message, "Error", MessageBoxButton.OK, MessageBoxImage.Error);
}
}, false);
SetLeftMarkerCommand = new Command(() =>
{
if (IsTimeRangeEnabled == false)
{
IsTimeRangeEnabled = true;
}
// get the exact time of the current audio or video frame, positionseconds is potentially inaccurate
StartTimeRange = VideoPlayer.PositionSeconds;
startTimeRangeTimeStamp = VideoPlayer.getFrameSeekTimeStamp();
}, false);
SetRightMarkerCommand = new Command(() =>
{
if (IsTimeRangeEnabled == false)
{
IsTimeRangeEnabled = true;
StartTimeRange = VideoPlayer.PositionSeconds;
startTimeRangeTimeStamp = VideoPlayer.getFrameSeekTimeStamp();
}
else
{
EndTimeRange = VideoPlayer.PositionSeconds;
endTimeRangeTimeStamp = VideoPlayer.getFrameSeekTimeStamp();
}
}, false);
OpenLocationCommand = new Command(async() =>
{
VideoOpenLocationView openLocation = new VideoOpenLocationView();
bool?success = openLocation.ShowDialog();
if (success == true)
{
MediaItem video = null;
MediaItem audio = null;
if (!String.IsNullOrWhiteSpace(openLocation.ViewModel.VideoLocation))
{
video = MediaItemFactory.create(openLocation.ViewModel.VideoLocation);
MiscUtils.insertIntoHistoryCollection(Settings.Default.VideoLocationHistory, openLocation.ViewModel.VideoLocation);
}
if (!String.IsNullOrWhiteSpace(openLocation.ViewModel.AudioLocation))
{
audio = MediaItemFactory.create(openLocation.ViewModel.AudioLocation);
MiscUtils.insertIntoHistoryCollection(Settings.Default.AudioLocationHistory, openLocation.ViewModel.AudioLocation);
}
await openAndPlay(new VideoAudioPair(video, audio));
}
});
HasAudio = true;
VideoState = VideoPlayerControl.VideoState.CLOSED;
IsTimeRangeEnabled = false;
StartTimeRange = 0;
EndTimeRange = 0;
startTimeRangeTimeStamp = 0;
endTimeRangeTimeStamp = 0;
}
