| class TDecodeStreamCaps |
'Block' streaming extension capabilities.
| Public Member Functions | |
|---|---|
| TDecodeStreamCaps() | |
| TDecodeStreamCaps(TInt, const TSize &, TInt, TInt, TDecodeStreamCaps::TNavigation) | |
| IMPORT_C TInt | MaxBlocksPerRequest() |
| IMPORT_C const TSize & | MinBlockSizeInPixels() |
| IMPORT_C TDecodeStreamCaps::TNavigation | Navigation() |
| IMPORT_C TInt | OptimalBlocksPerRequest() |
| IMPORT_C TUint | Size() |
| IMPORT_C TInt | StreamSizeInBlocks() |
| IMPORT_C TUint | Version() |
| Public Member Enumerations | |
|---|---|
| enum | TNavigation { ENavigationSequentialForward = 0x01, ENavigationRandomForward = 0x02, ENavigationRandomBackwards = 0x04, ENavigationRandom = 0x08, ENavigationSequentialBackwards = 0x10 } |
| Private Attributes | |
|---|---|
| TInt | iMaxBlocksPerRequest |
| TSize | iMinBlockSizeInPixels |
| TNavigation | iNavigation |
| TInt | iOptimalBlocksPerRequest |
| TInt | iReserved |
| TUint | iSizeVersion |
| TInt | iStreamSizeInBlocks |
| IMPORT_C | TDecodeStreamCaps | ( | TInt | aMaxBlocksPerRequest, |
| const TSize & | aMinBlockSizeInPixels, | |||
| TInt | aOptimalBlocksPerRequest, | |||
| TInt | aStreamSizeInBlocks, | |||
| TDecodeStreamCaps::TNavigation | aNavigation | |||
| ) | ||||
Constructor.
| TInt aMaxBlocksPerRequest | Maximum number of blocks that can be returned from the stream to client in a single request. |
| const TSize & aMinBlockSizeInPixels | Minimum size in pixels of a block returned from the stream to the client in a single request. |
| TInt aOptimalBlocksPerRequest | Optimum number of blocks returned from the stream to the client in a single request to get maximum performance benefit. |
| TInt aStreamSizeInBlocks | Number of blocks of size MinBlockSizeInPixels() in the stream. |
| TDecodeStreamCaps::TNavigation aNavigation | Navigation capabilities. |
| IMPORT_C TInt | MaxBlocksPerRequest | ( | ) | const |
The maximum number of blocks that can be returned from the stream to client in a single request.
Maximum number of blocks that can be returned from the stream to client in a single request.
| IMPORT_C const TSize & | MinBlockSizeInPixels | ( | ) | const |
The Minimum size in pixels of a block returned from the stream to the client in a single request.
Minimum size in pixels of a block returned from the stream to the client in a single request. Sequence numbers and StreamSizeInBlocks() refer to this size of block.
| IMPORT_C TDecodeStreamCaps::TNavigation | Navigation | ( | ) | const |
Navigation capabilities.
Navigation capabilities.
Full random access to the stream if Navigation() returns ENavigationSequentialForward | ENavigationRandomForward | ENavigationRandomBackwards
| IMPORT_C TInt | OptimalBlocksPerRequest | ( | ) | const |
Optimum number of blocks returned from the stream to the client in a single request to get maximum performance benefit.
Optimum number of blocks returned from the stream to the client in a single request to get maximum performance benefit. This can be used to determine the optimum value of the number of blocks of min block size per request.
| IMPORT_C TInt | StreamSizeInBlocks | ( | ) | const |
Number of blocks of size MinBlockSizeInPixels() in the stream.
Number of blocks of size MinBlockSizeInPixels() in the stream.
Navigation possibilities within stream.
| ENavigationSequentialForward = 0x01 |
Blocks are returned from first to last |
| ENavigationRandomForward = 0x02 |
Blocks are returned in a random order but moving only from first to last e.g. 1, 5, 18... |
| ENavigationRandomBackwards = 0x04 |
Blocks are returned in a random order but moving only from last to first e.g. 18, 5, 1... |
| ENavigationRandom = 0x08 |
Blocks are returned randomly e.g. 18, 5, 20, ... |
| ENavigationSequentialBackwards = 0x10 |
Blocks are returned from last to first |