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/*
* 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) 1995-2014 by The BRLTTY Developers.
*
* BRLTTY comes with ABSOLUTELY NO WARRANTY.
*
* This is free software, placed under the terms of the
* GNU General Public License, as published by the Free Software
* Foundation; either version 2 of the License, or (at your option) any
* later version. Please see the file LICENSE-GPL for details.
*
* Web Page: http://mielke.cc/brltty/
*
* This software is maintained by Dave Mielke <dave@mielke.cc>.
*/
#ifndef BRLTTY_INCLUDED_IO_GENERIC
#define BRLTTY_INCLUDED_IO_GENERIC
#include "gio_types.h"
#include "async_io.h"
#ifdef __cplusplus
extern "C" {
#endif /* __cplusplus */
extern void gioInitializeDescriptor (GioDescriptor *descriptor);
extern void gioInitializeSerialParameters (SerialParameters *parameters);
extern GioEndpoint *gioConnectResource (
const char *identifier,
const GioDescriptor *descriptor
);
extern int gioDisconnectResource (GioEndpoint *endpoint);
extern const void *gioGetApplicationData (GioEndpoint *endpoint);
extern char *gioGetResourceName (GioEndpoint *endpoint);
extern ssize_t gioWriteData (GioEndpoint *endpoint, const void *data, size_t size);
extern int gioAwaitInput (GioEndpoint *endpoint, int timeout);
extern ssize_t gioReadData (GioEndpoint *endpoint, void *buffer, size_t size, int wait);
extern int gioReadByte (GioEndpoint *endpoint, unsigned char *byte, int wait);
extern int gioDiscardInput (GioEndpoint *endpoint);
extern int gioReconfigureResource (
GioEndpoint *endpoint,
const SerialParameters *parameters
);
extern unsigned int gioGetBytesPerSecond (GioEndpoint *endpoint);
extern unsigned int gioGetMillisecondsToTransfer (GioEndpoint *endpoint, size_t bytes);
extern ssize_t gioTellResource (
GioEndpoint *endpoint,
uint8_t recipient, uint8_t type,
uint8_t request, uint16_t value, uint16_t index,
const void *data, uint16_t size
);
extern ssize_t gioAskResource (
GioEndpoint *endpoint,
uint8_t recipient, uint8_t type,
uint8_t request, uint16_t value, uint16_t index,
void *buffer, uint16_t size
);
extern size_t gioGetHidReportSize (GioEndpoint *endpoint, unsigned char report);
extern ssize_t gioSetHidReport (
GioEndpoint *endpoint, unsigned char report,
const void *data, uint16_t size
);
extern ssize_t gioWriteHidReport (
GioEndpoint *endpoint,
const unsigned char *data, uint16_t size
);
extern ssize_t gioGetHidReport (
GioEndpoint *endpoint, unsigned char report,
void *buffer, uint16_t size
);
extern ssize_t gioSetHidFeature (
GioEndpoint *endpoint, unsigned char report,
const void *data, uint16_t size
);
extern ssize_t gioWriteHidFeature (
GioEndpoint *endpoint,
const unsigned char *data, uint16_t size
);
extern ssize_t gioGetHidFeature (
GioEndpoint *endpoint, unsigned char report,
void *buffer, uint16_t size
);
extern int gioMonitorInput (GioEndpoint *endpoint, AsyncMonitorCallback *callback, void *data);
typedef struct {
void *const data;
int error;
} GioHandleInputParameters;
#define GIO_INPUT_HANDLER(name) int name (GioHandleInputParameters *parameters)
typedef GIO_INPUT_HANDLER(GioInputHandler);
typedef struct GioHandleInputObjectStruct GioHandleInputObject;
extern GioHandleInputObject *gioNewHandleInputObject (
GioEndpoint *endpoint, int pollInterval,
GioInputHandler *handler, void *data
);
extern void gioDestroyHandleInputObject (GioHandleInputObject *hio);
typedef enum {
GIO_RESOURCE_UNTYPED = 0,
GIO_RESOURCE_SERIAL,
GIO_RESOURCE_USB,
GIO_RESOURCE_BLUETOOTH
} GioResourceType;
extern GioResourceType gioGetResourceType (GioEndpoint *endpoint);
extern void *gioGetResourceObject (GioEndpoint *endpoint);
#ifdef __cplusplus
}
#endif /* __cplusplus */
#endif /* BRLTTY_INCLUDED_IO_GENERIC */
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