private static unsafe HeifIntegerEncoderParameter CreateIntegerParameter(SafeHeifEncoder encoder,
heif_encoder_parameter nativeParameter,
string name,
bool hasDefaultValue)
{
int defaultValue = 0;
if (hasDefaultValue)
{
// The error value is ignored because some encoders return an error
// when getting the value of a valid command.
_ = LibHeifNative.heif_encoder_get_parameter_integer(encoder, name, out defaultValue);
}
int minimum = 0;
int maximum = 0;
var error = LibHeifNative.heif_encoder_parameter_get_valid_integer_range(nativeParameter,
out bool haveMinimumMaximum,
ref minimum,
ref maximum);
error.ThrowIfError();
return(new HeifIntegerEncoderParameter(name, hasDefaultValue, defaultValue, haveMinimumMaximum, minimum, maximum));
}
private static unsafe HeifIntegerEncoderParameter CreateIntegerParameter(SafeHeifEncoder encoder,
heif_encoder_parameter nativeParameter,
string name,
bool hasDefaultValue)
{
int defaultValue = 0;
if (hasDefaultValue)
{
// The error value is ignored because some encoders return an error
// when getting the value of a valid command.
_ = LibHeifNative.heif_encoder_get_parameter_integer(encoder, name, out defaultValue);
}
bool haveMinimumMaximum;
int minimum = 0;
int maximum = 0;
var validValues = new List <int>();
if (LibHeifVersion.Is1Point10OrLater)
{
var error = LibHeifNative.heif_encoder_parameter_get_valid_integer_values(nativeParameter,
out bool haveMinimum,
out bool haveMaximum,
ref minimum,
ref maximum,
out int numValidValues,
out var validValuesArray);
error.ThrowIfError();
haveMinimumMaximum = haveMinimum && haveMaximum;
if (numValidValues > 0 && validValuesArray != IntPtr.Zero)
{
validValues.Capacity = numValidValues;
int *integerArray = (int *)validValuesArray;
for (int i = 0; i < numValidValues; i++)
{
validValues.Add(integerArray[i]);
}
}
}
else
{
var error = LibHeifNative.heif_encoder_parameter_get_valid_integer_range(nativeParameter,
out haveMinimumMaximum,
ref minimum,
ref maximum);
error.ThrowIfError();
}
return(new HeifIntegerEncoderParameter(name,
hasDefaultValue,
defaultValue,
haveMinimumMaximum,
minimum,
maximum,
validValues.AsReadOnly()));
}
