mirror of
https://github.com/status-im/nim-dagger.git
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80 lines
2.2 KiB
Nim
80 lines
2.2 KiB
Nim
## Nim-Codex
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## Copyright (c) 2022 Status Research & Development GmbH
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## Licensed under either of
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## * Apache License, version 2.0, ([LICENSE-APACHE](LICENSE-APACHE))
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## * MIT license ([LICENSE-MIT](LICENSE-MIT))
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## at your option.
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## This file may not be copied, modified, or distributed except according to
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## those terms.
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import std/options
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import pkg/leopard
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import pkg/results
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import ../backend
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type
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LeoEncoderBackend* = ref object of EncoderBackend
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encoder*: Option[LeoEncoder]
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LeoDecoderBackend* = ref object of DecoderBackend
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decoder*: Option[LeoDecoder]
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method encode*(
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self: LeoEncoderBackend,
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data, parity: ptr UncheckedArray[ptr UncheckedArray[byte]],
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dataLen, parityLen: int,
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): Result[void, cstring] =
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## Encode data using Leopard backend
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if parityLen == 0:
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return ok()
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var encoder =
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if self.encoder.isNone:
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self.encoder = (?LeoEncoder.init(self.blockSize, self.buffers, self.parity)).some
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self.encoder.get()
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else:
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self.encoder.get()
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encoder.encode(data, parity, dataLen, parityLen)
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method decode*(
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self: LeoDecoderBackend,
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data, parity, recovered: ptr UncheckedArray[ptr UncheckedArray[byte]],
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dataLen, parityLen, recoveredLen: int,
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): Result[void, cstring] =
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## Decode data using given Leopard backend
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var decoder =
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if self.decoder.isNone:
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self.decoder = (?LeoDecoder.init(self.blockSize, self.buffers, self.parity)).some
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self.decoder.get()
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else:
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self.decoder.get()
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decoder.decode(data, parity, recovered, dataLen, parityLen, recoveredLen)
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method release*(self: LeoEncoderBackend) =
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if self.encoder.isSome:
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self.encoder.get().free()
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method release*(self: LeoDecoderBackend) =
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if self.decoder.isSome:
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self.decoder.get().free()
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proc new*(
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T: type LeoEncoderBackend, blockSize, buffers, parity: int
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): LeoEncoderBackend =
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## Create an instance of an Leopard Encoder backend
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##
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LeoEncoderBackend(blockSize: blockSize, buffers: buffers, parity: parity)
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proc new*(
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T: type LeoDecoderBackend, blockSize, buffers, parity: int
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): LeoDecoderBackend =
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## Create an instance of an Leopard Decoder backend
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##
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LeoDecoderBackend(blockSize: blockSize, buffers: buffers, parity: parity)
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