/// <summary>
/// Parses a AL attribute list.
/// </summary>
/// <param name="attributeArray">The AL context attribute list.</param>
/// <returns>The parsed <see cref="AlcContextAttributes"/> object.</returns>
internal static ALContextAttributes FromArray(int[] attributeArray)
{
var extra = new List <int>();
var attributes = new ALContextAttributes();
void ParseAttribute(int @enum, int value)
{
switch (@enum)
{
case (int)AlcContextAttributes.Frequency: attributes.Frequency = value; break;
case (int)AlcContextAttributes.MonoSources: attributes.MonoSources = value; break;
case (int)AlcContextAttributes.StereoSources: attributes.StereoSources = value; break;
case (int)AlcContextAttributes.Refresh: attributes.Refresh = value; break;
case (int)AlcContextAttributes.Sync: attributes.Sync = value == 1; break;
default: extra.Add(@enum); extra.Add(value); break;
}
}
for (var i = 0; i < attributeArray.Length - 1; i += 2)
{
ParseAttribute(attributeArray[i], attributeArray[i + 1]);
}
attributes.AdditionalAttributes = extra.ToArray();
return(attributes);
}
/// <summary>
/// Returns a list of attributes for the current context of the specified device.
/// </summary>
/// <param name="device">The device to get attributes from.</param>
/// <returns>A list of attributes for the device.</returns>
public static ALContextAttributes GetContextAttributes(ALDevice device)
{
GetInteger(device, AlcGetInteger.AttributesSize, 1, out int size);
var attributes = new int[size];
GetInteger(device, AlcGetInteger.AllAttributes, size, attributes);
return(ALContextAttributes.FromArray(attributes));
}
/// <summary>This function creates a context using a specified device.</summary> /// <param name="device">A pointer to a device.</param> /// <param name="attributes">The ALContext attributes to request.</param> /// <returns>Returns a pointer to the new context (NULL on failure).</returns> /// <remarks>The attribute list can be NULL, or a zero terminated list of integer pairs composed of valid ALC attribute tokens and requested values.</remarks> public static ALContext CreateContext(ALDevice device, ALContextAttributes attributes) => CreateContext(device, attributes.CreateAttributeArray());