odyssey/third_party/machinarium/sources/zpq_stream.h

/*
 * machinarium.
 *
 * cooperative multitasking engine.
 */

#ifndef MM_ZPQ_STREAM_H
#define MM_ZPQ_STREAM_H

#include <stdlib.h>

#define MM_ZPQ_IO_ERROR         (-1)
#define MM_ZPQ_DECOMPRESS_ERROR (-2)
#define MM_ZPQ_MAX_ALGORITHMS   (8)
#define MM_ZPQ_NO_COMPRESSION   'n'

struct mm_zpq_stream;
typedef struct mm_zpq_stream mm_zpq_stream_t;

typedef ssize_t (*mm_zpq_tx_func)(void *arg, void const *data, size_t size);
typedef ssize_t (*mm_zpq_rx_func)(void *arg, void *data, size_t size);

mm_zpq_stream_t *
zpq_create(int impl,
           mm_zpq_tx_func tx_func,
           mm_zpq_rx_func rx_func,
           void *arg,
           char *rx_data,
           size_t rx_data_size);
ssize_t
mm_zpq_read(mm_zpq_stream_t *zs, void *buf, size_t size);
ssize_t
mm_zpq_write(mm_zpq_stream_t *zs,
             void const *buf,
             size_t size,
             size_t *processed);
char const *
mm_zpq_error(mm_zpq_stream_t *zs);
size_t
mm_zpq_buffered_tx(mm_zpq_stream_t *zs);
size_t
mm_zpq_buffered_rx(mm_zpq_stream_t *zs);
_Bool
mm_zpq_deferred_rx(mm_zpq_stream_t *zs);
void
mm_zpq_free(mm_zpq_stream_t *zs);

void
mm_zpq_get_supported_algorithms(char *algorithms);
int
mm_zpq_get_algorithm_impl(char name);

#endif