Constructor
new ContentWorkarounds()
A collection of methods to work around content issues on various platforms.
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Members
BOX_SIZE_64_OFFSET_ :number
Offset to a box's 64-bit size field, if it has one.
Type:
- number
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BOX_SIZE_OFFSET_ :number
Offset to a box's size field.
Type:
- number
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BOX_TYPE_ENCA_ :number
Box type for "enca".
Type:
- number
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BOX_TYPE_ENCV_ :number
Box type for "encv".
Type:
- number
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BOX_TYPE_OFFSET_ :number
Offset to a box's type field.
Type:
- number
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CANNED_SINF_BOX_ :shaka.util.Lazy.<!Uint8Array>
A canned "sinf" box for use when adding fake encryption metadata to init
segments.
Type:
- shaka.util.Lazy.<!Uint8Array>
CANNED_SINF_BOX_FORMAT_OFFSET_ :number
The location of the format field in the "frma" box inside the canned "sinf"
box above.
Type:
- number
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Methods
createEncryptionMetadata_(initSegmentnon-null, sourceBox, metadataBoxType) → {Uint8Array}
Create an encryption metadata box ("encv" or "enca" box), based on the
source box ("mp4a", "avc1", etc). Returns a new buffer containing the
encryption metadata box.
Parameters:
Name | Type | Description |
---|---|---|
initSegment |
Uint8Array | |
sourceBox |
shaka.extern.ParsedBox | |
metadataBoxType |
number |
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Returns:
- Type
- Uint8Array
fakeEncryption(initSegmentBuffernon-null, urinullable) → {Uint8Array}
Transform the init segment into a new init segment buffer that indicates
encryption. If the init segment already indicates encryption, return the
original init segment.
Should only be called for MP4 init segments, and only on platforms that
need this workaround.
Parameters:
Name | Type | Attributes | Description |
---|---|---|---|
initSegmentBuffer |
BufferSource | ||
uri |
string |
<nullable> |
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Returns:
- Type
- Uint8Array
insertEncryptionMetadata_(initSegmentnon-null, stsdBox, sourceBox, ancestorBoxesnon-null, metadataBoxType) → {Uint8Array}
Insert an encryption metadata box ("encv" or "enca" box) into the MP4 init
segment, based on the source box ("mp4a", "avc1", etc). Returns a new
buffer containing the modified init segment.
Parameters:
Name | Type | Description |
---|---|---|
initSegment |
Uint8Array | |
stsdBox |
shaka.extern.ParsedBox | |
sourceBox |
shaka.extern.ParsedBox | |
ancestorBoxes |
Array.<shaka.extern.ParsedBox> | |
metadataBoxType |
number |
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Returns:
- Type
- Uint8Array
updateBoxSize_(dataArraynon-null, boxStart, newBoxSize)
Modify an MP4 box's size field in-place.
Parameters:
Name | Type | Description |
---|---|---|
dataArray |
Uint8Array | |
boxStart |
number | The start position of the box in dataArray. |
newBoxSize |
number | The new size of the box. |
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