Constructor
new SegmentIndex(referencesnon-null)
Parameters:
Name | Type | Description |
---|---|---|
references |
Array.<!shaka.media.SegmentReference> | The list of SegmentReferences, which must be sorted first by their start times (ascending) and second by their end times (ascending). |
- Implements:
- shaka.util.IReleasable
- Iterable.<!shaka.media.SegmentReference>
- Source:
Members
numEvicted :number
The number of references that have been removed from the front of the
array. Used to create stable positions in the find/get APIs.
Type:
- number
- Source:
references :Array.<!shaka.media.SegmentReference>
Type:
- Array.<!shaka.media.SegmentReference>
- Source:
Methods
assertCorrectReferences_(referencesnon-null)
Asserts that the given SegmentReferences are sorted.
Parameters:
Name | Type | Description |
---|---|---|
references |
Array.<shaka.media.SegmentReference> |
- Source:
forSingleSegment(startTime, duration, urisnon-null) → {shaka.media.SegmentIndex}
Create a SegmentIndex for a single segment of the given start time and
duration at the given URIs.
Parameters:
Name | Type | Description |
---|---|---|
startTime |
number | |
duration |
number | |
uris |
Array.<string> |
- Source:
Returns:
destroy() → {Promise}
SegmentIndex used to be an IDestroyable. Now it is an IReleasable.
This method is provided for backward compatibility.
- Deprecated:
- Yes
- Source:
Returns:
- Type
- Promise
evict(time)
Removes all SegmentReferences that end before the given time.
Parameters:
Name | Type | Description |
---|---|---|
time |
number | The time in seconds. |
- Source:
find(time) → {number}
Finds the position of the segment for the given time, in seconds, relative
to the start of the presentation. Returns the position of the segment
with the largest end time if more than one segment is known for the given
time.
Parameters:
Name | Type | Description |
---|---|---|
time |
number |
- Source:
Returns:
The position of the segment, or null if the position of
the segment could not be determined.
- Type
- number
fit(windowStart, windowEndnullable, isNewopt)
Drops references that start after windowEnd, or end before windowStart,
and contracts the last reference so that it ends at windowEnd.
Do not call on the last period of a live presentation (unknown duration).
It is okay to call on the other periods of a live presentation, where the
duration is known and another period has been added.
Parameters:
Name | Type | Attributes | Default | Description |
---|---|---|---|---|
windowStart |
number | |||
windowEnd |
number |
<nullable> |
||
isNew |
boolean |
<optional> |
false | Whether this is a new SegmentIndex and we shouldn't update the number of evicted elements. |
- Source:
get(position) → {shaka.media.SegmentReference}
Gets the SegmentReference for the segment at the given position.
Parameters:
Name | Type | Description |
---|---|---|
position |
number | The position of the segment as returned by find(). |
- Source:
Returns:
The SegmentReference, or null if
no such SegmentReference exists.
getIteratorForTime(time) → {shaka.media.SegmentIterator}
Returns a new iterator that initially points to the segment that contains
the given time. Like the normal iterator, next() must be called first to
get to the first element. Returns null if we do not find a segment at the
requested time.
Parameters:
Name | Type | Description |
---|---|---|
time |
number |
- Source:
Returns:
markImmutable()
Marks the index as immutable. Segments cannot be added or removed after
this point. This doesn't affect the references themselves. This also
makes the destroy/release methods do nothing.
This is mainly for testing.
- Source:
merge(referencesnon-null)
Merges the given SegmentReferences. Supports extending the original
references only. Will replace old references with equivalent new ones, and
keep any unique old ones.
Used, for example, by the DASH and HLS parser, where manifests may not list
all available references, so we must keep available references in memory to
fill the availability window.
Parameters:
Name | Type | Description |
---|---|---|
references |
Array.<!shaka.media.SegmentReference> | The list of SegmentReferences, which must be sorted first by their start times (ascending) and second by their end times (ascending). |
- Deprecated:
- Not used directly by our own parsers, so will become private in v4. Use mergeAndEvict() instead.
- Source:
mergeAndEvict(referencesnon-null, windowStart)
Merges the given SegmentReferences and evicts the ones that end before the
given time. Supports extending the original references only.
Will not replace old references or interleave new ones.
Used, for example, by the DASH and HLS parser, where manifests may not list
all available references, so we must keep available references in memory to
fill the availability window.
Parameters:
Name | Type | Description |
---|---|---|
references |
Array.<!shaka.media.SegmentReference> | The list of SegmentReferences, which must be sorted first by their start times (ascending) and second by their end times (ascending). |
windowStart |
number | The start of the availability window to filter out the references that are no longer available. |
- Source:
offset(offset)
Offset all segment references by a fixed amount.
Parameters:
Name | Type | Description |
---|---|---|
offset |
number | The amount to add to each segment's start and end times. |
- Source:
release()
Request that this object release all internal references.
- Implements:
- Source:
updateEvery(interval, updateCallback)
Updates the references every so often. Stops when the references list
returned by the callback is null.
Parameters:
Name | Type | Description |
---|---|---|
interval |
number | The interval in seconds. |
updateCallback |
function(): Array.<shaka.media.SegmentReference> |
- Source: