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LibCompress/LZW: Use a LittleEndianBitStream
No need to manually implement bit stream logic when we have a helper for this task.
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2 changed files with 12 additions and 35 deletions
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@ -6,6 +6,7 @@
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*/
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#include <AK/Array.h>
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#include <AK/BitStream.h>
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#include <AK/Debug.h>
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#include <AK/Endian.h>
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#include <AK/Error.h>
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@ -183,7 +184,10 @@ static ErrorOr<void> decode_frame(GIFLoadingContext& context, size_t frame_index
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if (image->lzw_min_code_size > 8)
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return Error::from_string_literal("LZW minimum code size is greater than 8");
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Compress::LZWDecoder decoder(image->lzw_encoded_bytes, image->lzw_min_code_size);
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FixedMemoryStream stream { image->lzw_encoded_bytes, FixedMemoryStream::Mode::ReadOnly };
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auto bit_stream = make<LittleEndianInputBitStream>(MaybeOwned<Stream>(stream));
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Compress::LZWDecoder decoder(MaybeOwned<LittleEndianInputBitStream> { move(bit_stream) }, image->lzw_min_code_size);
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// Add GIF-specific control codes
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int const clear_code = decoder.add_control_code();
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