2.2.4.2.1.5.5 RFX_PROGRESSIVE_TILE_UPGRADE
The RFX_PROGRESSIVE_TILE_UPGRADE structure contains data required for an upgrade pass of a tile using progressive techniques. The block contains information that MUST be added to the information currently stored by the decoder in order to increase the quality of the tile.
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blockType |
blockLen |
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quantIdxY |
quantIdxCb |
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quantIdxCr |
xIdx |
yIdx |
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progressiveQuality |
ySrlLen |
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yRawLen |
cbSrlLen |
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cbRawLen |
crSrlLen |
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crRawLen |
ySrlData (variable) |
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yRawData (variable) |
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cbSrlData (variable) |
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cbRawData (variable) |
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crSrlData (variable) |
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crRawData (variable) |
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blockType (2 bytes): A 16-bit unsigned integer that specifies the block type. This field MUST be set to WBT_TILE_PROGRESSIVE_UPGRADE (0xCCC7).
blockLen (4 bytes): A 32-bit unsigned integer that specifies the size, in bytes, of the variable-length RFX_PROGRESSIVE_TILE_UPGRADE block.
quantIdxY (1 byte): An 8-bit unsigned integer that specifies an index into the RFX_COMPONENT_CODEC_QUANT (section 2.2.4.2.1.5.2) array (the quantVals field) of the containing RFX_PROGRESSIVE_REGION (section 2.2.4.2.1.5) block. The specified quantization table MUST be used for de-quantization of the sub-bands for the Luma (Y) component.
quantIdxCb (1 byte): An 8-bit unsigned integer that specifies an index into the RFX_COMPONENT_CODEC_QUANT array (the quantVals field) of the containing RFX_PROGRESSIVE_REGION block. The specified quantization table MUST be used for de-quantization of the sub-bands for the Chroma Blue (Cb) component.
quantIdxCr (1 byte): An 8-bit unsigned integer that specifies an index into the RFX_COMPONENT_CODEC_QUANT array (the quantVals field) of the containing RFX_PROGRESSIVE_REGION block. The specified quantization table MUST be used for de-quantization of the sub-bands for the Chroma Red (Cr) component.
xIdx (2 bytes): A 16-bit unsigned integer that specifies the x-index of the encoded tile in the screen tile grid. The pixel x-coordinate is obtained by multiplying the x-index by the size of the tile.
yIdx (2 bytes): A 16-bit unsigned integer that specifies the y-index of the encoded tile in the screen tile grid. The pixel y-coordinate is obtained by multiplying the y-index by the size of the tile.
progressiveQuality (1 byte): An 8-bit unsigned integer that specifies an index into the RFX_PROGRESSIVE_CODEC_QUANT (section 2.2.4.2.1.5.1) array (the quantProgVals field) of the containing RFX_PROGRESSIVE_REGION block. A value of 255 (0xFF) indicates a full progressive quality table (the quality is 100%, and all the coefficients are zero).
ySrlLen (2 bytes): A 16-bit unsigned integer that specifies the size, in bytes, of the ySrlData field.
yRawLen (2 bytes): A 16-bit unsigned integer that specifies the size, in bytes, of the yRawData field.
cbSrlLen (2 bytes): A 16-bit unsigned integer that specifies the size, in bytes, of the cbSrlData field.
cbRawLen (2 bytes): A 16-bit unsigned integer that specifies the size, in bytes, of the cbRawData field.
crSrlLen (2 bytes): A 16-bit unsigned integer that specifies the size, in bytes, of the crSrlData field.
crRawLen (2 bytes): A 16-bit unsigned integer that specifies the size, in bytes, of the crRawData field.
ySrlData (variable): A variable-length array of bytes that contains bits for the Luma (Y) component compressed using the Simplified-RL method.
yRawData (variable): A variable-length array of bytes that contains raw bits for the Luma (Y) component.
cbSrlData (variable): A variable-length array of bytes that contains bits for the Chroma Blue (Cb) component compressed using the Simplified-RL method.
cbRawData (variable): A variable-length array of bytes that contains raw bits for the Chroma Blue (Cb) component.
crSrlData (variable): A variable-length array of bytes that contains bits for the Chroma Red (Cr) component compressed using the Simplified-RL method.
crRawData (variable): A variable-length array of bytes that contains raw bits for the Chroma Red (Cr) component.