ValueGst

struct ValueGst {

}

Members

Static functions

canCompare bool canCompare(Value value1, Value value2): Determines if value1 and value2 can be compared.
canIntersect bool canIntersect(Value value1, Value value2): Determines if intersecting two values will produce a valid result. Two values will produce a valid intersection if they have the same type.
canSubtract bool canSubtract(Value minuend, Value subtrahend): Checks if it's possible to subtract subtrahend from minuend.
canUnion bool canUnion(Value value1, Value value2): Determines if value1 and value2 can be non-trivially unioned. Any two values can be trivially unioned by adding both of them to a GstValueList. However, certain types have the possibility to be unioned in a simpler way. For example, an integer range and an integer can be unioned if the integer is a subset of the integer range. If there is the possibility that two values can be unioned, this function returns TRUE.
compare int compare(Value value1, Value value2): Compares value1 and value2. If value1 and value2 cannot be compared, the function returns GST_VALUE_UNORDERED. Otherwise, if value1 is greater than value2, GST_VALUE_GREATER_THAN is returned. If value1 is less than value2, GST_VALUE_LESS_THAN is returned. If the values are equal, GST_VALUE_EQUAL is returned.
deserialize bool deserialize(Value dest, string src): Tries to deserialize a string into the type specified by the given GValue. If the operation succeeds, TRUE is returned, FALSE otherwise.
fixate bool fixate(Value dest, Value src): Fixate src into a new value dest. For ranges, the first element is taken. For lists and arrays, the first item is fixated and returned. If src is already fixed, this function returns FALSE.
fractionMultiply bool fractionMultiply(Value product, Value factor1, Value factor2): Multiplies the two gobject.Value items containing a GST_TYPE_FRACTION and sets product to the product of the two fractions.
fractionSubtract bool fractionSubtract(Value dest, Value minuend, Value subtrahend): Subtracts the subtrahend from the minuend and sets dest to the result.
getBitmask ulong getBitmask(Value value): Gets the bitmask specified by value.
getCaps Caps getCaps(Value value): Gets the contents of value. The reference count of the returned gstreamer.Caps will not be modified, therefore the caller must take one before getting rid of the value.
getCapsFeatures CapsFeatures getCapsFeatures(Value value): Gets the contents of value.
getDoubleRangeMax double getDoubleRangeMax(Value value): Gets the maximum of the range specified by value.
getDoubleRangeMin double getDoubleRangeMin(Value value): Gets the minimum of the range specified by value.
getFlagsetFlags uint getFlagsetFlags(Value value): Retrieve the flags field of a GstFlagSet value.
getFlagsetMask uint getFlagsetMask(Value value): Retrieve the mask field of a GstFlagSet value.
getFractionDenominator int getFractionDenominator(Value value): Gets the denominator of the fraction specified by value.
getFractionNumerator int getFractionNumerator(Value value): Gets the numerator of the fraction specified by value.
getFractionRangeMax Value getFractionRangeMax(Value value): Gets the maximum of the range specified by value.
getFractionRangeMin Value getFractionRangeMin(Value value): Gets the minimum of the range specified by value.
getInt64RangeMax long getInt64RangeMax(Value value): Gets the maximum of the range specified by value.
getInt64RangeMin long getInt64RangeMin(Value value): Gets the minimum of the range specified by value.
getInt64RangeStep long getInt64RangeStep(Value value): Gets the step of the range specified by value.
getIntRangeMax int getIntRangeMax(Value value): Gets the maximum of the range specified by value.
getIntRangeMin int getIntRangeMin(Value value): Gets the minimum of the range specified by value.
getIntRangeStep int getIntRangeStep(Value value): Gets the step of the range specified by value.
getStructure Structure getStructure(Value value): Gets the contents of value.
initAndCopy void initAndCopy(Value dest, Value src): Initialises the target value to be of the same type as source and then copies the contents from source to target.
intersect bool intersect(Value dest, Value value1, Value value2): Calculates the intersection of two values. If the values have a non-empty intersection, the value representing the intersection is placed in dest, unless NULL. If the intersection is non-empty, dest is not modified.
isFixed bool isFixed(Value value): Tests if the given GValue, if available in a GstStructure (or any other container) contains a "fixed" (which means: one value) or an "unfixed" (which means: multiple possible values, such as data lists or data ranges) value.
isSubset bool isSubset(Value value1, Value value2): Check that value1 is a subset of value2.
register void register(GstValueTable* table): Registers functions to perform calculations on gobject.Value items of a given type. Each type can only be added once.
serialize string serialize(Value value): tries to transform the given value into a string representation that allows getting back this string later on using Value.deserialize.
setBitmask void setBitmask(Value value, ulong bitmask): Sets value to the bitmask specified by bitmask.
setCaps void setCaps(Value value, Caps caps): Sets the contents of value to caps. A reference to the provided caps will be taken by the value.
setCapsFeatures void setCapsFeatures(Value value, CapsFeatures features): Sets the contents of value to features.
setDoubleRange void setDoubleRange(Value value, double start, double end): Sets value to the range specified by start and end.
setFlagset void setFlagset(Value value, uint flags, uint mask): Sets value to the flags and mask values provided in flags and mask. The flags value indicates the values of flags, the mask represents which bits in the flag value have been set, and which are "don't care"
setFraction void setFraction(Value value, int numerator, int denominator): Sets value to the fraction specified by numerator over denominator. The fraction gets reduced to the smallest numerator and denominator, and if necessary the sign is moved to the numerator.
setFractionRange void setFractionRange(Value value, Value start, Value end): Sets value to the range specified by start and end.
setFractionRangeFull void setFractionRangeFull(Value value, int numeratorStart, int denominatorStart, int numeratorEnd, int denominatorEnd): Sets value to the range specified by numerator_start/denominator_start and numerator_end/denominator_end.
setInt64Range void setInt64Range(Value value, long start, long end): Sets value to the range specified by start and end.
setInt64RangeStep void setInt64RangeStep(Value value, long start, long end, long step): Sets value to the range specified by start, end and step.
setIntRange void setIntRange(Value value, int start, int end): Sets value to the range specified by start and end.
setIntRangeStep void setIntRangeStep(Value value, int start, int end, int step): Sets value to the range specified by start, end and step.
setStructure void setStructure(Value value, Structure structure): Sets the contents of value to structure.
subtract bool subtract(Value dest, Value minuend, Value subtrahend): Subtracts subtrahend from minuend and stores the result in dest. Note that this means subtraction as in sets, not as in mathematics.
union_ bool union_(Value dest, Value value1, Value value2): Creates a GValue corresponding to the union of value1 and value2.

gstreamer ValueGst structs

ValueGst