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MDEC decoder #20

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7 of 11 tasks
JaCzekanski opened this issue Jul 4, 2018 · 1 comment
Closed
7 of 11 tasks

MDEC decoder #20

JaCzekanski opened this issue Jul 4, 2018 · 1 comment
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JaCzekanski commented Jul 4, 2018 •
edited

  • Implement MDEC decompression algorithm

  • Add missing MDEC commands and status fields

  • Handle DMA0 channel transfer (compressed data in RAM -> MDEC engine)

  • Handle DMA1 channel transfer (decoded data in MDEC -> RAM)

  • 4bit mode

  • 8bit mode

  • 16bit mode

  • 24bit mode

  • Add support for 24bit display mode (hacked)

  • Refactor mdec module

  • It would be nice to have test program running on real PSX which decodes given frame (real data or random "fuzzed" input) and dumps decoded frame (like GTE fuzz automated tests)
@JaCzekanski JaCzekanski mentioned this issue Jul 4, 2018
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@JaCzekanski JaCzekanski self-assigned this Nov 25, 2018
JaCzekanski added a commit that referenced this issue Nov 28, 2018
@JaCzekanski
mdec: algorithm working, hardcoded demangling for 24bit #20
5ce6b05
JaCzekanski added a commit that referenced this issue Nov 28, 2018
@JaCzekanski
mdec: algorithm working, hardcoded demangling for 24bit #20
140472e
JaCzekanski added a commit that referenced this issue Mar 13, 2019
@JaCzekanski
mdec: algorithm working, hardcoded demangling for 24bit #20
99a7ca1
@JaCzekanski
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MDEC is mostly working, but rarely used options (4 and 8 bit modes and grayscale) aren't implemented.

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