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first working (and crappy) video delta encoding

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minjaesong
2025-04-18 21:00:46 +09:00
parent 4c4f24be37
commit d9af28eed2
5 changed files with 398 additions and 105 deletions
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18
terranmon.txt
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@@ -603,18 +603,14 @@ iPF2:
iPF1-delta (for video encoding):
Delta encoded frames contain "insutructions" for delta-encoding the existing frame.
Or, a collection of [OPCODE | PAYLOAD] pairs
Delta encoded frames contain "insutructions" for patch-encoding the existing frame.
Or, a collection of [StateChangeCode] [Optional VarInts] [Payload...] pairs
Opcode:
0x00 : Skip N blocks
payload: (varint) number of 4x4 blocks
0x10 : Patch
payload: (12 bytes) encoded delta block
0x20 : Repeat
payload: (varint) repeat last delta N times
0xF0 : End of delta stream
payload: none
States:
0x00 SKIP [varint skipCount]
0x01 PATCH [varint blockCount] [12x blockCount bytes]
0x02 REPEAT [varint repeatCount] [a block]
0xFF END
Sample stream:
[SKIP 10] [PATCH A] [REPEAT 3] [SKIP 5] [PATCH B] [END]