core/compress.c


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#define EVA_SIZE (sizeof(uint64_t) * MVEC_SIZE)

struct DeflateParams {
    z_stream strm;
    size_t size;
    Bytef *in;
    Bytef *out;
    uint8_t tgap[THREAD_GAP];
};

struct InflateParams {
    z_stream strm;
    size_t avail_in;
    size_t size;
    Bytef *in;
    Bytef *out;
    uint8_t tgap[THREAD_GAP];
};

int comp_deflate(struct DeflateParams *params) {
    assert(params);
    assert(params->size);
    assert(params->in);
    assert(params->out);

    params->strm.zalloc = NULL;
    params->strm.zfree = NULL;
    params->strm.opaque = NULL;

    deflateInit(&params->strm, Z_DEFAULT_COMPRESSION);

    params->strm.avail_in = params->size;
    params->strm.avail_out = params->size;
    params->strm.next_in = params->in;
    params->strm.next_out = params->out;

    deflate(&params->strm, Z_FINISH);

    return 0;
}

void comp_deflate_end(struct DeflateParams *params) {
    assert(params);
    deflateEnd(&params->strm);
}

int comp_inflate(struct InflateParams *params) {
    assert(params);
    assert(params->avail_in);
    assert(params->size);
    assert(params->in);
    assert(params->out);

    params->strm.next_in = params->in;
    params->strm.avail_in = params->avail_in;
    params->strm.zalloc = NULL;
    params->strm.zfree = NULL;
    params->strm.opaque = NULL;

    inflateInit(&params->strm);

    params->strm.avail_out = params->size;
    params->strm.next_out = params->out;

#if defined(NDEBUG)
    inflate(&params->strm, Z_FINISH);
#else
    assert(inflate(&params->strm, Z_FINISH));
#endif

    return 0;
}

void comp_inflate_end(struct InflateParams *params) {
    assert(params);
    inflateEnd(&params->strm);
}