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// --------------------------------------------------------------------------------------------------------------------
// <copyright file="AudioBitrateConverter.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>
// A Converter to provide the available audio bitrate options.
// </summary>
// --------------------------------------------------------------------------------------------------------------------
namespace HandBrakeWPF.Converters.Audio
{
using System;
using System.Globalization;
using System.Windows.Data;
using System.Collections.Generic;
using System.Linq;
using HandBrake.ApplicationServices.Model.Encoding;
using HandBrake.Interop.Model.Encoding;
/// <summary>
/// A Converter to provide the available audio bitrate options.
/// </summary>
public class AudioBitrateConverter : IValueConverter
{
/// <summary>
/// Converts source values to a value for the binding target. The data binding engine calls this method when it propagates the values from source bindings to the binding target.
/// </summary>
/// <returns>
/// A converted value.If the method returns null, the valid null value is used.A return value of <see cref="T:System.Windows.DependencyProperty"/>.<see cref="F:System.Windows.DependencyProperty.UnsetValue"/> indicates that the converter did not produce a value, and that the binding will use the <see cref="P:System.Windows.Data.BindingBase.FallbackValue"/> if it is available, or else will use the default value.A return value of <see cref="T:System.Windows.Data.Binding"/>.<see cref="F:System.Windows.Data.Binding.DoNothing"/> indicates that the binding does not transfer the value or use the <see cref="P:System.Windows.Data.BindingBase.FallbackValue"/> or the default value.
/// </returns>
/// <param name="value">
/// The value.
/// </param>
/// <param name="targetType">
/// The type of the binding target property.
/// </param>
/// <param name="parameter">
/// The converter parameter to use.
/// </param>
/// <param name="culture">
/// The culture to use in the converter.
/// </param>
public object Convert(object value, Type targetType, object parameter, CultureInfo culture)
{
// Base set of bitrates available.
List<int> bitrates = new List<int> { 32, 40, 48, 56, 64, 80, 96, 112, 128, 160, 192, 224, 256, 320, 384, 448, 640, 768 };
int max = 160;
AudioTrack track = value as AudioTrack;
if (track != null)
{
switch (track.Encoder)
{
case AudioEncoder.Faac:
case AudioEncoder.ffaac:
max = track.MixDown >= Mixdown.FivePoint1Channels ? 768 : 320;
break;
case AudioEncoder.Lame:
max = 320;
break;
case AudioEncoder.Vorbis:
max = 384;
break;
case AudioEncoder.Ac3:
max = 640;
break;
case AudioEncoder.Ac3Passthrough:
case AudioEncoder.DtsPassthrough:
case AudioEncoder.DtsHDPassthrough:
case AudioEncoder.AacPassthru:
case AudioEncoder.Mp3Passthru:
case AudioEncoder.Passthrough:
case AudioEncoder.ffflac:
max = 768; // Since we don't care, just set it to the max.
break;
default:
max = 768;
break;
}
// Bring the bitrate down in-line with the max.
if (track.Bitrate > max)
{
track.Bitrate = max;
}
}
return bitrates.Where(bitrate => bitrate <= max);
}
public object ConvertBack(object value, Type targetType, object parameter, CultureInfo culture)
{
throw new NotImplementedException();
}
}
}
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