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AK: Move bit streams from LibCore

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This commit is contained in:
Tim Schumacher 2023-01-25 20:06:16 +01:00 • committed by Andrew Kaster
parent 94f139c111
commit 2470dd3bb5
14 changed files with 167 additions and 158 deletions
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4
Userland/Libraries/LibCompress/Brotli.h
View file

@ -6,15 +6,15 @@
#pragma once
#include <AK/BitStream.h>
#include <AK/CircularQueue.h>
#include <AK/FixedArray.h>
#include <LibCore/BitStream.h>
#include <LibCore/Stream.h>
namespace Compress {
using AK::LittleEndianInputBitStream;
using AK::Stream;
using Core::Stream::LittleEndianInputBitStream;
class BrotliDecompressionStream : public Stream {
public:

11
Userland/Libraries/LibCompress/Deflate.cpp
View file

@ -9,6 +9,7 @@
#include <AK/Assertions.h>
#include <AK/BinaryHeap.h>
#include <AK/BinarySearch.h>
#include <AK/BitStream.h>
#include <LibCore/MemoryStream.h>
#include <string.h>
@ -98,7 +99,7 @@ Optional<CanonicalCode> CanonicalCode::from_bytes(ReadonlyBytes bytes)
return code;
}
ErrorOr<u32> CanonicalCode::read_symbol(Core::Stream::LittleEndianInputBitStream& stream) const
ErrorOr<u32> CanonicalCode::read_symbol(LittleEndianInputBitStream& stream) const
{
u32 code_bits = 1;
@ -115,7 +116,7 @@ ErrorOr<u32> CanonicalCode::read_symbol(Core::Stream::LittleEndianInputBitStream
}
}
ErrorOr<void> CanonicalCode::write_symbol(Core::Stream::LittleEndianOutputBitStream& stream, u32 symbol) const
ErrorOr<void> CanonicalCode::write_symbol(LittleEndianOutputBitStream& stream, u32 symbol) const
{
TRY(stream.write_bits(m_bit_codes[symbol], m_bit_code_lengths[symbol]));
return {};
@ -195,7 +196,7 @@ ErrorOr<NonnullOwnPtr<DeflateDecompressor>> DeflateDecompressor::construct(Maybe
}
DeflateDecompressor::DeflateDecompressor(MaybeOwned<AK::Stream> stream, CircularBuffer output_buffer)
: m_input_stream(make<Core::Stream::LittleEndianInputBitStream>(move(stream)))
: m_input_stream(make<LittleEndianInputBitStream>(move(stream)))
, m_output_buffer(move(output_buffer))
{
}
@ -448,12 +449,12 @@ ErrorOr<void> DeflateDecompressor::decode_codes(CanonicalCode& literal_code, Opt
ErrorOr<NonnullOwnPtr<DeflateCompressor>> DeflateCompressor::construct(MaybeOwned<AK::Stream> stream, CompressionLevel compression_level)
{
auto bit_stream = TRY(Core::Stream::LittleEndianOutputBitStream::construct(move(stream)));
auto bit_stream = TRY(LittleEndianOutputBitStream::construct(move(stream)));
auto deflate_compressor = TRY(adopt_nonnull_own_or_enomem(new (nothrow) DeflateCompressor(move(bit_stream), compression_level)));
return deflate_compressor;
}
DeflateCompressor::DeflateCompressor(NonnullOwnPtr<Core::Stream::LittleEndianOutputBitStream> stream, CompressionLevel compression_level)
DeflateCompressor::DeflateCompressor(NonnullOwnPtr<LittleEndianOutputBitStream> stream, CompressionLevel compression_level)
: m_compression_level(compression_level)
, m_compression_constants(compression_constants[static_cast<int>(m_compression_level)])
, m_output_stream(move(stream))

13
Userland/Libraries/LibCompress/Deflate.h
View file

@ -9,9 +9,10 @@
#include <AK/ByteBuffer.h>
#include <AK/Endian.h>
#include <AK/Forward.h>
#include <AK/MaybeOwned.h>
#include <AK/Vector.h>
#include <LibCompress/DeflateTables.h>
#include <LibCore/BitStream.h>
#include <LibCore/Stream.h>
namespace Compress {
@ -19,8 +20,8 @@ namespace Compress {
class CanonicalCode {
public:
CanonicalCode() = default;
ErrorOr<u32> read_symbol(Core::Stream::LittleEndianInputBitStream&) const;
ErrorOr<void> write_symbol(Core::Stream::LittleEndianOutputBitStream&, u32) const;
ErrorOr<u32> read_symbol(LittleEndianInputBitStream&) const;
ErrorOr<void> write_symbol(LittleEndianOutputBitStream&, u32) const;
static CanonicalCode const& fixed_literal_codes();
static CanonicalCode const& fixed_distance_codes();
@ -100,7 +101,7 @@ private:
UncompressedBlock m_uncompressed_block;
};
MaybeOwned<Core::Stream::LittleEndianInputBitStream> m_input_stream;
MaybeOwned<LittleEndianInputBitStream> m_input_stream;
CircularBuffer m_output_buffer;
};
@ -152,7 +153,7 @@ public:
static ErrorOr<ByteBuffer> compress_all(ReadonlyBytes bytes, CompressionLevel = CompressionLevel::GOOD);
private:
DeflateCompressor(NonnullOwnPtr<Core::Stream::LittleEndianOutputBitStream>, CompressionLevel = CompressionLevel::GOOD);
DeflateCompressor(NonnullOwnPtr<LittleEndianOutputBitStream>, CompressionLevel = CompressionLevel::GOOD);
Bytes pending_block() { return { m_rolling_window + block_size, block_size }; }
@ -184,7 +185,7 @@ private:
bool m_finished { false };
CompressionLevel m_compression_level;
CompressionConstants m_compression_constants;
NonnullOwnPtr<Core::Stream::LittleEndianOutputBitStream> m_output_stream;
NonnullOwnPtr<LittleEndianOutputBitStream> m_output_stream;
u8 m_rolling_window[window_size];
size_t m_pending_block_size { 0 };