Class TVideoInputBuffer

class TVideoInputBuffer;

Description

A buffer for compressed video data, contains one coded data unit. Video buffers are used for writing video data to the API.

Members

Defined in TVideoInputBuffer:

• EDecodingTimestampThe decoding timestamp field is valid
• EPresentationTimestampThe presentation timestamp field is valid.
• ESequenceNumberThe sequence number field is valid.
• TVideoBufferOptions
• TVideoInputBuffer()Default constructor. Zeroes all members (including iData which will point to gar...
• iDataPointer to the video data.
• iDecodingTimestampData unit decoding timestamp. Valid if EDecodingTimestamp is set in the options.
• iErrorTrue if the data unit is known to contain erroneous data.
• iLinkA queue link used internally by the MSL API. The field must not be modified whil...
• iOptionsData unit options. The value is a bitfield combined from values from TVideoBuffe...
• iPreRollTrue if the data is part of a pre-roll period and may not be drawn. The decoder ...
• iPresentationTimestampData unit presentation timestamp. Valid if EPresentationTimestamp is set in the ...
• iSequenceNumberData unit sequence number. Valid if ESequenceNumber is set in the options. If pr...
• iUserA pointer for free-form user data. The pointer is set by the module that created...

IMPORT_C TVideoInputBuffer();

Description

Default constructor. Zeroes all members (including iData which will point to garbage until manually set to point to the real video buffer memory data area by the user).

TVideoBufferOptions

Description

TPtr8 iData;

Description

Pointer to the video data.

TUint32 iOptions;

Description

Data unit options. The value is a bitfield combined from values from TVideoBufferOptions.

See also:

• TVideoInputBuffer::TVideoBufferOptions

TTimeIntervalMicroSeconds iDecodingTimestamp;

Description

Data unit decoding timestamp. Valid if EDecodingTimestamp is set in the options.

TTimeIntervalMicroSeconds iPresentationTimestamp;

Description

Data unit presentation timestamp. Valid if EPresentationTimestamp is set in the options. If the input bitstream does not contain timestamp information, this field should be valid, otherwise pictures cannot be displayed at the correct time. If the input bitstream contains timestamp information (such as the TR syntax element of H.263 bitstreams) and valid iPresentationTimestamp is provided, the value of iPresentationTimestamp is used in playback.

TBool iPreRoll;

Description

True if the data is part of a pre-roll period and may not be drawn. The decoder may skip display-related operations, but must still decode normally since pre-roll may not end in a key frame.

TUint iSequenceNumber;

Description

Data unit sequence number. Valid if ESequenceNumber is set in the options. If present, the sequence number is incremented once per coded data unit, a gap in the numbers indicates missing data.

TBool iError;

Description

True if the data unit is known to contain erroneous data.

TDblQueLink iLink;

Description

A queue link used internally by the MSL API. The field must not be modified while the buffer is in the MSL API, but can be used by the client before the buffer has been written and after the buffer has been returned.

TAny * iUser;

Description

A pointer for free-form user data. The pointer is set by the module that created the buffer, and is usually used for memory management purposes.