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// --------------------------------------------------------------------------------------------------------------------
// <copyright file="AudioViewModel.cs" company="HandBrake Project (http://handbrake.fr)">
// This file is part of the HandBrake source code - It may be used under the terms of the GNU General Public License.
// </copyright>
// <summary>
// The Audio View Model
// </summary>
// --------------------------------------------------------------------------------------------------------------------
namespace HandBrakeWPF.ViewModels
{
using System.Collections.Generic;
using System.Collections.ObjectModel;
using System.ComponentModel;
using System.Linq;
using Caliburn.Micro;
using HandBrake.ApplicationServices.Interop;
using HandBrake.ApplicationServices.Interop.Model.Encoding;
using HandBrake.ApplicationServices.Utilities;
using HandBrakeWPF.Model.Audio;
using HandBrakeWPF.Properties;
using HandBrakeWPF.Services.Interfaces;
using HandBrakeWPF.Services.Presets.Model;
using HandBrakeWPF.Services.Scan.Model;
using HandBrakeWPF.Utilities;
using HandBrakeWPF.ViewModels.Interfaces;
using AudioEncoder = HandBrakeWPF.Services.Encode.Model.Models.AudioEncoder;
using AudioTrack = HandBrakeWPF.Services.Encode.Model.Models.AudioTrack;
using EncodeTask = HandBrakeWPF.Services.Encode.Model.EncodeTask;
using OutputFormat = HandBrakeWPF.Services.Encode.Model.Models.OutputFormat;
/// <summary>
/// The Audio View Model
/// </summary>
public class AudioViewModel : ViewModelBase, IAudioViewModel
{
private readonly IWindowManager windowManager;
private IEnumerable<Audio> sourceTracks;
private Preset currentPreset;
#region Constructors and Destructors
/// <summary>
/// Initializes a new instance of the <see cref="AudioViewModel"/> class.
/// </summary>
/// <param name="windowManager">
/// The window manager.
/// </param>
/// <param name="userSettingService">
/// The user Setting Service.
/// </param>
public AudioViewModel(IWindowManager windowManager, IUserSettingService userSettingService)
{
this.windowManager = windowManager;
this.Task = new EncodeTask();
this.AudioDefaultsViewModel = new AudioDefaultsViewModel(this.Task);
this.SampleRates = new ObservableCollection<string> { "Auto" };
foreach (var item in HandBrakeEncoderHelpers.AudioSampleRates)
{
this.SampleRates.Add(item.Name);
}
this.AudioEncoders = EnumHelper<AudioEncoder>.GetEnumList();
this.SourceTracks = new List<Audio>();
}
#endregion
#region Properties
/// <summary>
/// Gets or sets the audio defaults view model.
/// </summary>
public IAudioDefaultsViewModel AudioDefaultsViewModel { get; set; }
/// <summary>
/// Gets or sets AudioEncoders.
/// </summary>
public IEnumerable<AudioEncoder> AudioEncoders { get; set; }
/// <summary>
/// Gets or sets SampleRates.
/// </summary>
public IList<string> SampleRates { get; set; }
/// <summary>
/// Gets or sets SourceTracks.
/// </summary>
public IEnumerable<Audio> SourceTracks
{
get
{
return this.sourceTracks;
}
set
{
this.sourceTracks = value;
this.NotifyOfPropertyChange(() => this.SourceTracks);
}
}
/// <summary>
/// Gets or sets the EncodeTask.
/// </summary>
public EncodeTask Task { get; set; }
/// <summary>
/// Gets the panel title.
/// </summary>
public string PanelTitle
{
get
{
return Resources.AudioViewModel_AudioTracks;
}
}
/// <summary>
/// Gets the switch display title.
/// </summary>
public string SwitchDisplayTitle
{
get
{
return Resources.AudioViewModel_ConfigureDefaults;
}
}
/// <summary>
/// Gets the default audio behaviours.
/// </summary>
public AudioBehaviours AudioBehaviours
{
get
{
return this.AudioDefaultsViewModel.AudioBehaviours;
}
}
#endregion
#region Public Methods
/// <summary>
/// Add an Audio Track
/// </summary>
public void Add()
{
// Add the first track if available.
this.Add(null, false);
}
/// <summary>
/// The add all remaining.
/// </summary>
public void AddAllRemaining()
{
this.AddAllRemainingTracks();
}
/// <summary>
/// Remove the Selected Track
/// </summary>
/// <param name="track">
/// The track.
/// </param>
public void Remove(AudioTrack track)
{
this.Task.AudioTracks.Remove(track);
}
/// <summary>
/// Clear out the Audio Tracks
/// </summary>
public void Clear()
{
this.Task.AudioTracks.Clear();
}
/// <summary>
/// Reload the audio tracks based on the defaults.
/// </summary>
public void ReloadDefaults()
{
this.SetupTracks();
}
/// <summary>
/// Trigger a Notify Property Changed on the Task to force various UI elements to update.
/// </summary>
public void RefreshTask()
{
this.NotifyOfPropertyChange(() => this.Task);
if (this.Task.OutputFormat == OutputFormat.Mp4)
{
foreach (AudioTrack track in this.Task.AudioTracks.Where(track => track.Encoder == AudioEncoder.ffflac || track.Encoder == AudioEncoder.Vorbis))
{
track.Encoder = AudioEncoder.ffaac;
}
}
this.AudioDefaultsViewModel.RefreshTask();
}
/// <summary>
/// The show audio defaults.
/// </summary>
public void ShowAudioDefaults()
{
IPopupWindowViewModel popup = new PopupWindowViewModel(this.AudioDefaultsViewModel, ResourcesUI.Preset_AudioDefaults_Title, ResourcesUI.AudioView_AudioDefaultsDescription);
if (this.windowManager.ShowDialog(popup) == true)
{
// Nothing to do yet, it's by reference.
}
else
{
// Handle other case(s)
}
}
#endregion
#region Implemented Interfaces
/// <summary>
/// Setup this tab for the specified preset.
/// </summary>
/// <param name="preset">
/// The preset.
/// </param>
/// <param name="task">
/// The task.
/// </param>
public void SetPreset(Preset preset, EncodeTask task)
{
this.Task = task;
this.currentPreset = preset;
// Audio Behaviours
this.AudioDefaultsViewModel.Setup(preset, task);
if (preset != null && preset.Task != null)
{
this.SetupTracks();
}
this.NotifyOfPropertyChange(() => this.Task);
}
/// <summary>
/// Update all the UI controls based on the encode task passed in.
/// </summary>
/// <param name="task">
/// The task.
/// </param>
public void UpdateTask(EncodeTask task)
{
this.Task = task;
this.NotifyOfPropertyChange(() => this.Task.AudioTracks);
this.NotifyOfPropertyChange(() => this.Task);
}
/// <summary>
/// Set the Source Title
/// </summary>
/// <param name="source">
/// The source.
/// </param>
/// <param name="title">
/// The title.
/// </param>
/// <param name="preset">
/// The preset.
/// </param>
/// <param name="task">
/// The task.
/// </param>
public void SetSource(Source source, Title title, Preset preset, EncodeTask task)
{
this.SourceTracks = title.AudioTracks;
// Only reset the audio tracks if we have none, or if the task is null.
if (this.Task == null)
{
this.SetPreset(preset, task);
}
// If there are no source tracks, clear the list, otherwise try to Auto-Select the correct tracks
if (this.SourceTracks == null || !this.SourceTracks.Any())
{
this.Task.AudioTracks.Clear();
}
else
{
this.SetupTracks();
}
// Force UI Updates
this.NotifyOfPropertyChange(() => this.Task);
}
#endregion
#region Methods
/// <summary>
/// Add the specified source track, or the first track in the SourceTracks collection if available.
/// </summary>
/// <param name="sourceTrack">
/// The source track.
/// </param>
/// <param name="useBehaviourTemplateMode">
/// The use Behaviour Template Mode.
/// </param>
private void Add(Audio sourceTrack, bool useBehaviourTemplateMode)
{
if (this.SourceTracks != null)
{
Audio track = sourceTrack ?? this.GetPreferredAudioTrack();
if (track != null)
{
if (!useBehaviourTemplateMode)
{
this.Task.AudioTracks.Add(new AudioTrack { ScannedTrack = track });
return;
}
switch (this.AudioDefaultsViewModel.AudioBehaviours.SelectedTrackDefaultBehaviour)
{
case AudioTrackDefaultsMode.None:
this.Task.AudioTracks.Add(new AudioTrack { ScannedTrack = track });
break;
case AudioTrackDefaultsMode.FirstTrack:
AudioBehaviourTrack template = this.currentPreset.AudioTrackBehaviours.BehaviourTracks.FirstOrDefault();
this.Task.AudioTracks.Add(template != null ? new AudioTrack(template) { ScannedTrack = track } : new AudioTrack { ScannedTrack = track });
break;
case AudioTrackDefaultsMode.AllTracks:
foreach (AudioBehaviourTrack tmpl in this.currentPreset.AudioTrackBehaviours.BehaviourTracks)
{
this.Task.AudioTracks.Add(tmpl != null ? new AudioTrack(tmpl) { ScannedTrack = track } : new AudioTrack { ScannedTrack = track });
}
break;
}
}
}
}
/// <summary>
/// Add all source tracks that don't currently exist on the list.
/// </summary>
private void AddAllRemainingTracks()
{
// For all the source audio tracks
foreach (Audio sourceTrack in this.SourceTracks)
{
// Step 2: Check if the track list already contrains this track
bool found = this.Task.AudioTracks.Any(audioTrack => Equals(audioTrack.ScannedTrack, sourceTrack));
if (!found)
{
// If it doesn't, add it.
this.Add(sourceTrack, true);
}
}
}
/// <summary>
/// Attempt to automatically select the correct audio tracks based on the users settings.
/// </summary>
private void SetupTracks()
{
if (!this.SourceTracks.Any())
{
// Clear out the old tracks
this.Task.AudioTracks.Clear();
return;
}
// Step 1, Cleanup Previous Tracks
this.Task.AudioTracks.Clear();
// Step 2, Sanity Check
if (this.SourceTracks == null || !this.SourceTracks.Any())
{
return;
}
// Step 3, Setup the tracks from the preset
foreach (AudioBehaviourTrack track in this.AudioBehaviours.BehaviourTracks)
{
this.Task.AudioTracks.Add(new AudioTrack(track) { ScannedTrack = this.GetPreferredAudioTrack() });
}
// Step 4, Handle the default selection behaviour.
switch (this.AudioDefaultsViewModel.AudioBehaviours.SelectedBehaviour)
{
case AudioBehaviourModes.None:
this.Task.AudioTracks.Clear();
break;
case AudioBehaviourModes.FirstMatch: // Adding all remaining audio tracks
this.AddFirstForSelectedLanguages();
break;
case AudioBehaviourModes.AllMatching: // Add Langauges tracks for the additional languages selected, in-order.
this.AddAllRemainingForSelectedLanguages();
break;
}
}
/// <summary>
/// The add first for selected languages.
/// </summary>
private void AddFirstForSelectedLanguages()
{
foreach (Audio sourceTrack in this.GetSelectedLanguagesTracks(false))
{
// Step 2: Check if the track list already contrains this track
bool found = this.Task.AudioTracks.Any(audioTrack => Equals(audioTrack.ScannedTrack, sourceTrack));
if (!found)
{
// Check if we are already using this language
bool foundLanguage = false;
foreach (var item in this.Task.AudioTracks.Where(item => item.ScannedTrack != null && sourceTrack.LanguageCode.Contains(item.ScannedTrack.LanguageCode)))
{
foundLanguage = true;
}
if (foundLanguage)
{
continue;
}
// If it doesn't, add it.
this.Add(sourceTrack, true);
}
}
}
/// <summary>
/// Add all remaining for selected languages.
/// </summary>
public void AddAllRemainingForSelectedLanguages()
{
// Add them if they are not already added.
foreach (Audio sourceTrack in this.GetSelectedLanguagesTracks(false))
{
// Step 2: Check if the track list already contrains this track
bool found = this.Task.AudioTracks.Any(audioTrack => Equals(audioTrack.ScannedTrack, sourceTrack));
if (!found)
{
// If it doesn't, add it.
this.Add(sourceTrack, true);
}
}
}
/// <summary>
/// The get preferred audio track, or the first if none available.
/// </summary>
/// <returns>
/// The users preferred language, or the first if none available.
/// </returns>
private Audio GetPreferredAudioTrack()
{
// The first track in the selected languages list is considered the preferred language.
// So, try match tracks on this.
IEnumerable<Audio> preferredAudioTracks = new List<Audio>();
if (this.AudioDefaultsViewModel.AudioBehaviours.SelectedLangauges.Count > 0)
{
string langName = this.AudioDefaultsViewModel.AudioBehaviours.SelectedLangauges.FirstOrDefault(w => !w.Equals(Constants.Any));
if (!string.IsNullOrEmpty(langName))
{
preferredAudioTracks = this.SourceTracks.Where(item => item.Language.Contains(langName));
}
}
return preferredAudioTracks.FirstOrDefault() ?? this.SourceTracks.FirstOrDefault();
}
/// <summary>
/// Gets a list of source tracks for the users selected languages.
/// </summary>
/// <param name="includeAny">
/// The include Any.
/// </param>
/// <returns>
/// A list of source audio tracks.
/// </returns>
private IEnumerable<Audio> GetSelectedLanguagesTracks(bool includeAny)
{
List<Audio> trackList = new List<Audio>();
List<string> isoCodes = LanguageUtilities.GetLanguageCodes(this.AudioDefaultsViewModel.AudioBehaviours.SelectedLangauges.ToArray());
if (includeAny)
{
isoCodes = LanguageUtilities.GetIsoCodes();
}
foreach (string code in isoCodes)
{
trackList.AddRange(this.SourceTracks.Where(source => source.LanguageCode.Trim() == code));
}
return trackList;
}
#endregion
}
}
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