ClickHouse/dbms/src/IO/BrotliReadBuffer.h

#pragma once

#include <IO/ReadBuffer.h>
#include <IO/BufferWithOwnMemory.h>

#include <brotli/decode.h>

namespace DB
{

class BrotliReadBuffer : public BufferWithOwnMemory<ReadBuffer>
{
public:
    BrotliReadBuffer(
            ReadBuffer &in_,
            size_t buf_size = DBMS_DEFAULT_BUFFER_SIZE,
            char *existing_memory = nullptr,
            size_t alignment = 0);

    ~BrotliReadBuffer() override;

private:
    bool nextImpl() override;

    ReadBuffer &in;

    BrotliDecoderState * bstate;
    BrotliDecoderResult bresult;

    size_t in_available;
    const uint8_t * in_data;

    size_t out_capacity;
    uint8_t  * out_data;

    bool eof;
};
}