6419e189a4
Currently, each backend has it's own function to verify whether the object vtable pointer is the expected one. All these functions can be removed in favor of a single isintance function in the base class, which takes the expected vtable pointer as a parameter. Functions which are called through the vtable, don't need to verify the vtable pointer, and those checks are removed.
92 lines
2.6 KiB
C
92 lines
2.6 KiB
C
/*
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* libdivecomputer
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*
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* Copyright (C) 2008 Jef Driesen
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
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* MA 02110-1301 USA
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*/
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#ifndef DEVICE_PRIVATE_H
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#define DEVICE_PRIVATE_H
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#include <limits.h>
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#include <libdivecomputer/context.h>
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#include <libdivecomputer/device.h>
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#ifdef __cplusplus
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extern "C" {
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#endif /* __cplusplus */
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#define EVENT_PROGRESS_INITIALIZER {0, UINT_MAX}
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struct dc_device_t;
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struct dc_device_vtable_t;
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typedef struct dc_device_vtable_t dc_device_vtable_t;
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struct dc_device_t {
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const dc_device_vtable_t *vtable;
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// Library context.
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dc_context_t *context;
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// Event notifications.
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unsigned int event_mask;
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dc_event_callback_t event_callback;
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void *event_userdata;
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// Cancellation support.
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dc_cancel_callback_t cancel_callback;
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void *cancel_userdata;
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// Cached events for the parsers.
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dc_event_devinfo_t devinfo;
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dc_event_clock_t clock;
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};
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struct dc_device_vtable_t {
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dc_family_t type;
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dc_status_t (*set_fingerprint) (dc_device_t *device, const unsigned char data[], unsigned int size);
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dc_status_t (*read) (dc_device_t *device, unsigned int address, unsigned char data[], unsigned int size);
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dc_status_t (*write) (dc_device_t *device, unsigned int address, const unsigned char data[], unsigned int size);
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dc_status_t (*dump) (dc_device_t *device, dc_buffer_t *buffer);
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dc_status_t (*foreach) (dc_device_t *device, dc_dive_callback_t callback, void *userdata);
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dc_status_t (*close) (dc_device_t *device);
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};
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int
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dc_device_isinstance (dc_device_t *device, const dc_device_vtable_t *vtable);
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void
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device_init (dc_device_t *device, dc_context_t *context, const dc_device_vtable_t *vtable);
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void
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device_event_emit (dc_device_t *device, dc_event_type_t event, const void *data);
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int
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device_is_cancelled (dc_device_t *device);
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dc_status_t
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device_dump_read (dc_device_t *device, unsigned char data[], unsigned int size, unsigned int blocksize);
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#ifdef __cplusplus
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}
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#endif /* __cplusplus */
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#endif /* DEVICE_PRIVATE_H */
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