Quantizer¶
divider module¶
This module contains the HDL for divider used for Quantiser
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jpegenc.subblocks.quantizer.divider.
divider
¶ This module contains the HDL implementation
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jpegenc.subblocks.quantizer.divider.
divider_ref
(dividend, divisor)¶ software implementation of divider
quant_rom module¶
MyHDL implementation of Quantiser ROM
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jpegenc.subblocks.quantizer.quant_rom.
build_huffman_rom_tables
(csvfile)¶ build huffman tables
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jpegenc.subblocks.quantizer.quant_rom.
quant_rom
¶ Build Chrominance ROM for Huffman Tables
quantizer module¶
The above module is the hardware implementation of quantizer top module
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class
jpegenc.subblocks.quantizer.quantizer.
QuantCtrl
¶ Bases:
object
Control Signals used for quantizer top module
start : signal used to start the processing of block ready : asserts when block is ready to take next input color_components : select Y1 or Y2 or Cb or Cr component
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class
jpegenc.subblocks.quantizer.quantizer.
QuantIODataStream
(width_data=12, width_addr=6)¶ Bases:
object
Input datastream into the Quantizer top module
data_in : send input data into the module read_addr : read the data from the input buffer
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jpegenc.subblocks.quantizer.quantizer.
quantizer
¶ The Quantizer module divides the input data and data in the ROM
Arguments: quanti_datastream : Input datastream to the module quant_ctrl : control signals to the module
Returns: quanto_datastream : Output datastream from the module
quantizer_core module¶
The above module is the hardware implementation of quantizer core module
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class
jpegenc.subblocks.quantizer.quantizer_core.
QuantDataStream
(width_data=12)¶ Bases:
object
Input interface for core module
data : input data to the quantizer core module valid : asserts when input data is valid
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jpegenc.subblocks.quantizer.quantizer_core.
quantizer_core
¶ This Module is the core of the Quantizer
Arguments: quant_input_stream : Input stream to the core module color_component : used to select specific quantizer tables
Returns: quant_output_stream : Output data stream from the Quantizer