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Diffstat (limited to 'libdash/include/ISubset.h')
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diff --git a/libdash/include/ISubset.h b/libdash/include/ISubset.h new file mode 100644 index 00000000..6d5c8566 --- /dev/null +++ b/libdash/include/ISubset.h @@ -0,0 +1,54 @@ +/** + * @class dash::mpd::ISubset + * @brief This interface is needed for accessing the attributes of the <tt><b>Subset</b></tt> element as specified in <em>ISO/IEC 23009-1, Part 1, 2012</em>, section 5.3.8.2, table 10 + * @details Subsets are described by the <tt><b>Subset</b></tt> element contained in the <tt><b>Period</b></tt> element. \n + * Subsets provide a mechanism to restrict the combination of active Adaptation Sets where an active Adaptation Set is one + * for which the DASH client is presenting at least one of the contained Representations.\n + * A Subset defines a set of one or more Adaptation Sets. The presence of a <tt><b>Subset</b></tt> element within a <tt><b>Period</b></tt> element expresses + * the intention of the creator of the Media Presentation that a client should act as follows: + * At any time, the set of active Adaptation Sets shall be a subset of the Adaptation Sets of one of the specified Subsets. + * Any Adaptation Set not explicitly contained in any Subset element is implicitly contained in all specified Subsets.\n + * This implies that + * <ul> + * <li>Empty Subsets are not allowed. + * <li>No Subset should contain all the Adaptation Sets. + * </ul> + * Each Adaptation Set for which the value of the \c \@id is provided in the \c \@contains attribute is contained in this Subset. + * @see dash::mpd::IMPDElement + * + * @author bitmovin Softwareentwicklung OG \n + * Email: libdash-dev@vicky.bitmovin.net + * @version 2.1 + * @date 2013 + * @copyright bitmovin Softwareentwicklung OG, All Rights Reserved \n\n + * This source code and its use and distribution, is subject to the terms + * and conditions of the applicable license agreement. + */ + +#ifndef ISUBSET_H_ +#define ISUBSET_H_ + +#include "config.h" + +#include "IMPDElement.h" + +namespace dash +{ + namespace mpd + { + class ISubset : public virtual IMPDElement + { + public: + virtual ~ISubset(){} + + /** + * Returns a reference to a vector of unsigned integers specifying the Adaptation Sets contained in a Subset by providing + * the \c \@id values of the contained Adaptation Sets. + * @return a reference to a vector of unsigned integers + */ + virtual const std::vector<uint32_t>& Contains () const = 0; + }; + } +} + +#endif /* ISUBSET_H_ */
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