Headers/async_types_io.h

/*
 * BRLTTY - A background process providing access to the console screen (when in
 *          text mode) for a blind person using a refreshable braille display.
 *
 * Copyright (C) 1995-2023 by The BRLTTY Developers.
 *
 * BRLTTY comes with ABSOLUTELY NO WARRANTY.
 *
 * This is free software, placed under the terms of the
 * GNU Lesser General Public License, as published by the Free Software
 * Foundation; either version 2.1 of the License, or (at your option) any
 * later version. Please see the file LICENSE-LGPL for details.
 *
 * Web Page: http://brltty.app/
 *
 * This software is maintained by Dave Mielke <dave@mielke.cc>.
 */

#ifndef BRLTTY_INCLUDED_ASYNC_TYPES_IO
#define BRLTTY_INCLUDED_ASYNC_TYPES_IO

#ifdef __cplusplus
extern "C" {
#endif /* __cplusplus */

typedef struct {
  void *data;
  int error;
} AsyncMonitorCallbackParameters;

#define ASYNC_MONITOR_CALLBACK(name) int name (const AsyncMonitorCallbackParameters *parameters)
typedef ASYNC_MONITOR_CALLBACK(AsyncMonitorCallback);

typedef struct {
  void *data;
  const void *buffer;
  size_t size;
  size_t length;
  int error;
  unsigned char end : 1;
} AsyncInputCallbackParameters;

#define ASYNC_INPUT_CALLBACK(name) size_t name (const AsyncInputCallbackParameters *parameters)
typedef ASYNC_INPUT_CALLBACK(AsyncInputCallback);

typedef struct {
  void *data;
  const void *buffer;
  size_t size;
  int error;
} AsyncOutputCallbackParameters;

#define ASYNC_OUTPUT_CALLBACK(name) void name (const AsyncOutputCallbackParameters *parameters)
typedef ASYNC_OUTPUT_CALLBACK(AsyncOutputCallback);

#ifdef __cplusplus
}
#endif /* __cplusplus */

#endif /* BRLTTY_INCLUDED_ASYNC_TYPES_IO */