2.2.4.2.1 RFX_PROGRESSIVE_DATABLOCK
The RFX_PROGRESSIVE_DATABLOCK structure is used to wrap data sent from the server to the client. All RemoteFX Progressive data blocks conform to this basic structure and are specified in sections 2.2.4.2.1.1 through 2.2.4.2.1.5.5.
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blockType |
blockLen |
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blockData (variable) |
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blockType (2 bytes): A 16-bit unsigned integer that specifies the block type. This field MUST be set to one of the following values. If this field is not set to one of the specified values, the decoder SHOULD ignore the contents of the blockLen and blockData fields.
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Value
Meaning
WBT_SYNC
0xCCC0
RFX_PROGRESSIVE_SYNC (section 2.2.4.2.1.1)
WBT_FRAME_BEGIN
0xCCC1
RFX_PROGRESSIVE_FRAME_BEGIN (section 2.2.4.2.1.2)
WBT_FRAME_END
0xCCC2
RFX_PROGRESSIVE_FRAME_END (section 2.2.4.2.1.3)
WBT_CONTEXT
0xCCC3
RFX_PROGRESSIVE_CONTEXT (section 2.2.4.2.1.4)
WBT_REGION
0xCCC4
RFX_PROGRESSIVE_REGION (section 2.2.4.2.1.5)
WBT_TILE_SIMPLE
0xCCC5
RFX_PROGRESSIVE_TILE_SIMPLE (section 2.2.4.2.1.5.3)
WBT_TILE_PROGRESSIVE_FIRST
0xCCC6
RFX_PROGRESSIVE_TILE_FIRST (section 2.2.4.2.1.5.4)
WBT_TILE_PROGRESSIVE_UPGRADE
0xCCC7
RFX_PROGRESSIVE_TILE_UPGRADE (section 2.2.4.2.1.5.5)
blockLen (4 bytes): A 32-bit unsigned integer that specifies the combined size, in bytes, of the blockType, blockLen and blockData fields.
blockData (variable): A variable-length field that contains data that conforms to the structure of the type specified by the blockType field.