/// <summary>
/// Sanitizes a mixdown given the output codec and input channel layout.
/// </summary>
/// <param name="mixdown">The desired mixdown.</param>
/// <param name="encoder">The output encoder to be used.</param>
/// <param name="layout">The input channel layout.</param>
/// <returns>A sanitized mixdown value.</returns>
public static HBMixdown SanitizeMixdown(HBMixdown mixdown, HBAudioEncoder encoder, ulong layout)
{
int sanitizedMixdown = HBFunctions.hb_mixdown_get_best((uint)encoder.Id, layout, mixdown.Id);
return Mixdowns.Single(m => m.Id == sanitizedMixdown);
}
// Tries to select the given mixdown. If it cannot, selects the last mixdown on the list.
// Does not raise the propertychanged event.
private void SelectMixdown(HBMixdown mixdown)
{
MixdownViewModel mixdownToSelect = this.MixdownChoices.FirstOrDefault(m => m.Mixdown == mixdown);
if (mixdownToSelect != null)
{
this.selectedMixdown = mixdownToSelect;
}
else
{
this.selectedMixdown = this.MixdownChoices[this.MixdownChoices.Count - 1];
}
}
/// <summary>
/// Sanitizes an audio bitrate given the output codec, sample rate and mixdown.
/// </summary>
/// <param name="audioBitrate">The desired audio bitrate.</param>
/// <param name="encoder">The output encoder to be used.</param>
/// <param name="sampleRate">The output sample rate to be used.</param>
/// <param name="mixdown">The mixdown to be used.</param>
/// <returns>A sanitized audio bitrate.</returns>
public static int SanitizeAudioBitrate(int audioBitrate, HBAudioEncoder encoder, int sampleRate, HBMixdown mixdown)
{
return HBFunctions.hb_audio_bitrate_get_best((uint)encoder.Id, audioBitrate, sampleRate, mixdown.Id);
}
/// <summary>
/// Determines if the given mixdown supports the given channel layout.
/// </summary>
/// <param name="mixdown">The mixdown to evaluate.</param>
/// <param name="layout">The channel layout to evaluate.</param>
/// <returns>True if the mixdown supports the given channel layout.</returns>
public static bool MixdownHasRemixSupport(HBMixdown mixdown, ulong layout)
{
return HBFunctions.hb_mixdown_has_remix_support(mixdown.Id, layout) > 0;
}
/// <summary>
/// Determines if the given encoder supports the given mixdown.
/// </summary>
/// <param name="mixdown">The mixdown to evaluate.</param>
/// <param name="encoder">The encoder to evaluate.</param>
/// <returns>True if the encoder supports the mixdown.</returns>
public static bool MixdownHasCodecSupport(HBMixdown mixdown, HBAudioEncoder encoder)
{
return HBFunctions.hb_mixdown_has_codec_support(mixdown.Id, (uint) encoder.Id) > 0;
}
/// <summary>
/// Gets the default audio bitrate for the given parameters.
/// </summary>
/// <param name="encoder">The encoder to use.</param>
/// <param name="sampleRate">The sample rate to use.</param>
/// <param name="mixdown">The mixdown to use.</param>
/// <returns>The default bitrate for these parameters.</returns>
public static int GetDefaultBitrate(HBAudioEncoder encoder, int sampleRate, HBMixdown mixdown)
{
return HBFunctions.hb_audio_bitrate_get_default((uint) encoder.Id, sampleRate, mixdown.Id);
}
/// <summary>
/// Gets the bitrate limits for the given audio codec, sample rate and mixdown.
/// </summary>
/// <param name="encoder">The audio encoder used.</param>
/// <param name="sampleRate">The sample rate used (Hz).</param>
/// <param name="mixdown">The mixdown used.</param>
/// <returns>Limits on the audio bitrate for the given settings.</returns>
public static BitrateLimits GetBitrateLimits(HBAudioEncoder encoder, int sampleRate, HBMixdown mixdown)
{
int low = 0;
int high = 0;
HBFunctions.hb_audio_bitrate_get_limits((uint)encoder.Id, sampleRate, mixdown.Id, ref low, ref high);
return new BitrateLimits { Low = low, High = high };
}
