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/**
* @class dash::mpd::ISegmentBase
* @brief This interface is needed for accessing the common elements and attributes of <tt><b>SegmentBase</b></tt>
* as specified in <em>ISO/IEC 23009-1, Part 1, 2012</em>, section 5.3.9.2.2, table 11
* @details It specifies Semgent base elements as well as the type for the Segment base information. \n
* The <tt><b>SegmentBase</b></tt> is sufficient if only a single Media Segment is provided per Representation and the Media Segment URL is included in the BaseURL element.\n
* In case multiple Media Segments are present, either a <tt><b>SegmentList</b></tt> or a <tt><b>SegmentTemplate</b></tt> is used
* that share the multiple Segment base information as provided in 5.3.9.2.3, Table 12. \n
* If the Representation contains more than one Media Segment, then either the attribute \c \@duration or the element <tt><b>SegmentTimeline</b></tt> shall be present.
* The attribute \c \@duration and the element <tt><b>SegmentTimeline</b></tt> shall not be present at the same time.
* Segments described by the Segment base information are referenced by an HTTP-URL conforming to the type URLType as defined in Table 13.
* @see dash::mpd::IURLType 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 ISEGMENTBASE_H_
#define ISEGMENTBASE_H_
#include "config.h"
#include "IMPDElement.h"
#include "IURLType.h"
namespace dash
{
namespace mpd
{
class ISegmentBase : public virtual IMPDElement
{
public:
virtual ~ISegmentBase(){}
/**
* Returns a pointer to a dash::mpd::IURLType object that specifies the URL including a possible byte range for the Initialization Segment.
* @return a pointer to dash::mpd::IURLType object
*/
virtual const IURLType* GetInitialization () const = 0;
/**
* Returns a pointer to a dash::mpd::IURLType object that specifies the URL including a possible byte range for the Representation Index Segment.
* @return a pointer to dash::mpd::IURLType object
*/
virtual const IURLType* GetRepresentationIndex () const = 0;
/**
* Returns an integer representing a timescale that specifies the timescale in units per seconds
* to be used for the derivation of different real-time duration values in the Segment Information.\n
* \b NOTE: This may be any frequency but typically is the media clock frequency of one of the media streams (or a positive integer multiple thereof).
* @return an unsigned integer
*/
virtual uint32_t GetTimescale () const = 0;
/**
* Returns an integer that specifies the presentation time offset of the Representation relative to the start of the Period.\n
* The value of the presentation time offset in seconds is the division of the value of this attribute and the value of the \c \@timescale attribute.\n
* If not present on any level, the value of the presentation time offset is 0.
* @return an unsigned integer
*/
virtual uint32_t GetPresentationTimeOffset () const = 0;
/**
* Returns a string that specifies the byte range that contains the Segment Index in all Media Segments of the Representation.\n
* The byte range shall be expressed and formatted as a \c byte-range-spec as defined in RFC 2616, Clause 14.35.1.
* It is restricted to a single expression identifying a contiguous range of bytes.
* @return a reference to a string
*/
virtual const std::string& GetIndexRange () const = 0;
/**
* When set to \c 'true' specifies that for all Segments in the Representation, the data outside the prefix defined by \c \@indexRange contains the data
* needed to access all access units of all media streams syntactically and semantically.
* @return a bool value
*/
virtual bool HasIndexRangeExact () const = 0;
};
}
}
#endif /* ISEGMENTBASE_H_ */
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