489 lines
14 KiB
C
489 lines
14 KiB
C
/*
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* libdivecomputer
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*
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* Copyright (C) 2009 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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#include <stdlib.h>
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#include "oceanic_atom2.h"
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#include "oceanic_common.h"
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#include "parser-private.h"
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#include "array.h"
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#include "units.h"
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#include "utils.h"
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#define ATOM1 0x4250
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#define EPIC 0x4257
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#define VT3 0x4258
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#define T3 0x4259
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#define ATOM2 0x4342
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#define GEO 0x4344
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#define DATAMASK 0x4347
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#define COMPUMASK 0x4348
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#define OC1A 0x434E
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#define VEO20 0x4359
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#define VEO30 0x435A
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#define ZENAIR 0x4442
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#define PROPLUS21 0x4444
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#define GEO20 0x4446
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#define VT4 0x4447
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#define OC1B 0x4449
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#define ATOM3 0x444C
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#define VT41 0x4452
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#define ATOM31 0x4456
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typedef struct oceanic_atom2_parser_t oceanic_atom2_parser_t;
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struct oceanic_atom2_parser_t {
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parser_t base;
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unsigned int model;
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// Cached fields.
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unsigned int cached;
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unsigned int divetime;
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double maxdepth;
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};
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static parser_status_t oceanic_atom2_parser_set_data (parser_t *abstract, const unsigned char *data, unsigned int size);
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static parser_status_t oceanic_atom2_parser_get_datetime (parser_t *abstract, dc_datetime_t *datetime);
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static parser_status_t oceanic_atom2_parser_get_field (parser_t *abstract, parser_field_type_t type, unsigned int flags, void *value);
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static parser_status_t oceanic_atom2_parser_samples_foreach (parser_t *abstract, sample_callback_t callback, void *userdata);
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static parser_status_t oceanic_atom2_parser_destroy (parser_t *abstract);
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static const parser_backend_t oceanic_atom2_parser_backend = {
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PARSER_TYPE_OCEANIC_ATOM2,
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oceanic_atom2_parser_set_data, /* set_data */
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oceanic_atom2_parser_get_datetime, /* datetime */
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oceanic_atom2_parser_get_field, /* fields */
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oceanic_atom2_parser_samples_foreach, /* samples_foreach */
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oceanic_atom2_parser_destroy /* destroy */
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};
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static int
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parser_is_oceanic_atom2 (parser_t *abstract)
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{
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if (abstract == NULL)
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return 0;
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return abstract->backend == &oceanic_atom2_parser_backend;
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}
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parser_status_t
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oceanic_atom2_parser_create (parser_t **out, unsigned int model)
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{
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if (out == NULL)
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return PARSER_STATUS_ERROR;
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// Allocate memory.
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oceanic_atom2_parser_t *parser = (oceanic_atom2_parser_t *) malloc (sizeof (oceanic_atom2_parser_t));
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if (parser == NULL) {
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WARNING ("Failed to allocate memory.");
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return PARSER_STATUS_MEMORY;
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}
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// Initialize the base class.
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parser_init (&parser->base, &oceanic_atom2_parser_backend);
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// Set the default values.
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parser->model = model;
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parser->cached = 0;
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parser->divetime = 0;
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parser->maxdepth = 0.0;
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*out = (parser_t*) parser;
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return PARSER_STATUS_SUCCESS;
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}
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static parser_status_t
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oceanic_atom2_parser_destroy (parser_t *abstract)
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{
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if (! parser_is_oceanic_atom2 (abstract))
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return PARSER_STATUS_TYPE_MISMATCH;
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// Free memory.
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free (abstract);
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return PARSER_STATUS_SUCCESS;
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}
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static parser_status_t
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oceanic_atom2_parser_set_data (parser_t *abstract, const unsigned char *data, unsigned int size)
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{
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oceanic_atom2_parser_t *parser = (oceanic_atom2_parser_t *) abstract;
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if (! parser_is_oceanic_atom2 (abstract))
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return PARSER_STATUS_TYPE_MISMATCH;
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// Reset the cache.
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parser->cached = 0;
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parser->divetime = 0;
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parser->maxdepth = 0.0;
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return PARSER_STATUS_SUCCESS;
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}
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static parser_status_t
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oceanic_atom2_parser_get_datetime (parser_t *abstract, dc_datetime_t *datetime)
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{
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oceanic_atom2_parser_t *parser = (oceanic_atom2_parser_t *) abstract;
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if (abstract->size < 8)
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return PARSER_STATUS_ERROR;
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const unsigned char *p = abstract->data;
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if (datetime) {
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switch (parser->model) {
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case OC1A:
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case OC1B:
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case VT4:
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case VT41:
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case ATOM3:
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case ATOM31:
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datetime->year = ((p[5] & 0xE0) >> 5) + ((p[7] & 0xE0) >> 2) + 2000;
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datetime->month = (p[3] & 0x0F);
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datetime->day = ((p[0] & 0x80) >> 3) + ((p[3] & 0xF0) >> 4);
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datetime->hour = bcd2dec (p[1] & 0x1F);
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datetime->minute = bcd2dec (p[0] & 0x7F);
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break;
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case VT3:
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case VEO20:
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case GEO20:
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datetime->year = ((p[3] & 0xE0) >> 1) + (p[4] & 0x0F) + 2000;
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datetime->month = (p[4] & 0xF0) >> 4;
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datetime->day = p[3] & 0x1F;
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datetime->hour = bcd2dec (p[1] & 0x7F);
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datetime->minute = bcd2dec (p[0]);
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break;
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case ZENAIR:
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datetime->year = (p[3] & 0x0F) + 2000;
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datetime->month = (p[7] & 0xF0) >> 4;
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datetime->day = ((p[3] & 0x80) >> 3) + ((p[5] & 0xF0) >> 4);
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datetime->hour = bcd2dec (p[1] & 0x1F);
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datetime->minute = bcd2dec (p[0]);
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break;
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default:
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datetime->year = bcd2dec (((p[3] & 0xC0) >> 2) + (p[4] & 0x0F)) + 2000;
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datetime->month = (p[4] & 0xF0) >> 4;
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if (parser->model == T3)
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datetime->day = p[3] & 0x3F;
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else
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datetime->day = bcd2dec (p[3] & 0x3F);
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datetime->hour = bcd2dec (p[1] & 0x1F);
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datetime->minute = bcd2dec (p[0]);
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break;
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}
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datetime->second = 0;
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// Convert to a 24-hour clock.
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datetime->hour %= 12;
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if (p[1] & 0x80)
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datetime->hour += 12;
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/*
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* Workaround for the year 2010 problem.
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*
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* In theory there are more than enough bits available to store years
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* past 2010. Unfortunately some models do not use all those bits and
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* store only the last digit of the year. We try to guess the missing
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* information based on the current year. This should work in most
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* cases, except when the dive is more than 10 years old or in the
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* future (due to an incorrect clock on the device or the host system).
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*
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* Note that we are careful not to apply any guessing when the year is
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* actually stored with more bits. We don't want the code to break when
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* a firmware update fixes this bug.
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*/
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if (datetime->year < 2010) {
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// Retrieve the current year.
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dc_datetime_t now = {0};
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if (dc_datetime_localtime (&now, dc_datetime_now ()) &&
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now.year >= 2010)
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{
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// Guess the correct decade.
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int decade = (now.year / 10) * 10;
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if (datetime->year % 10 > now.year % 10)
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decade -= 10; /* Force back to the previous decade. */
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// Adjust the year.
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datetime->year += decade - 2000;
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}
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}
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}
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return PARSER_STATUS_SUCCESS;
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}
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static parser_status_t
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oceanic_atom2_parser_get_field (parser_t *abstract, parser_field_type_t type, unsigned int flags, void *value)
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{
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oceanic_atom2_parser_t *parser = (oceanic_atom2_parser_t *) abstract;
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const unsigned char *data = abstract->data;
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unsigned int size = abstract->size;
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unsigned int length = 11 * PAGESIZE / 2;
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unsigned int header = 4 * PAGESIZE;
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unsigned int footer = size - PAGESIZE;
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if (parser->model == DATAMASK || parser->model == COMPUMASK ||
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parser->model == GEO || parser->model == GEO20 ||
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parser->model == VEO20 || parser->model == VEO30) {
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length -= PAGESIZE;
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header -= PAGESIZE;
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}
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if (size < length)
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return PARSER_STATUS_ERROR;
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if (!parser->cached) {
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sample_statistics_t statistics = SAMPLE_STATISTICS_INITIALIZER;
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parser_status_t rc = oceanic_atom2_parser_samples_foreach (
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abstract, sample_statistics_cb, &statistics);
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if (rc != PARSER_STATUS_SUCCESS)
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return rc;
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parser->cached = 1;
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parser->divetime = statistics.divetime;
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parser->maxdepth = statistics.maxdepth;
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}
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gasmix_t *gasmix = (gasmix_t *) value;
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unsigned int nitrox = 0;
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if (value) {
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switch (type) {
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case FIELD_TYPE_DIVETIME:
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*((unsigned int *) value) = parser->divetime;
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break;
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case FIELD_TYPE_MAXDEPTH:
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*((double *) value) = array_uint16_le (data + footer + 4) / 16.0 * FEET;
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break;
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case FIELD_TYPE_GASMIX_COUNT:
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if (parser->model == DATAMASK || parser->model == COMPUMASK)
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*((unsigned int *) value) = 1;
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else
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*((unsigned int *) value) = 3;
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break;
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case FIELD_TYPE_GASMIX:
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if (parser->model == DATAMASK || parser->model == COMPUMASK)
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nitrox = data[header + 3];
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else
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nitrox = data[header + 4 + flags];
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gasmix->helium = 0.0;
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gasmix->oxygen = (nitrox ? nitrox / 100.0 : 0.21);
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gasmix->nitrogen = 1.0 - gasmix->oxygen - gasmix->helium;
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break;
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default:
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return PARSER_STATUS_UNSUPPORTED;
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}
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}
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return PARSER_STATUS_SUCCESS;
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}
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static parser_status_t
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oceanic_atom2_parser_samples_foreach (parser_t *abstract, sample_callback_t callback, void *userdata)
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{
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oceanic_atom2_parser_t *parser = (oceanic_atom2_parser_t *) abstract;
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if (! parser_is_oceanic_atom2 (abstract))
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return PARSER_STATUS_TYPE_MISMATCH;
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const unsigned char *data = abstract->data;
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unsigned int size = abstract->size;
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unsigned int header = 4 * PAGESIZE;
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if (parser->model == DATAMASK || parser->model == COMPUMASK ||
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parser->model == GEO || parser->model == GEO20 ||
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parser->model == VEO20 || parser->model == VEO30)
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header -= PAGESIZE;
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else if (parser->model == VT4 || parser->model == VT41)
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header += PAGESIZE;
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else if (parser->model == ATOM1)
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header -= 2 * PAGESIZE;
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if (size < header + 3 * PAGESIZE / 2)
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return PARSER_STATUS_ERROR;
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unsigned int time = 0;
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unsigned interval = 0;
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switch (data[0x17] & 0x03) {
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case 0:
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interval = 2;
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break;
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case 1:
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interval = 15;
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break;
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case 2:
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interval = 30;
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break;
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case 3:
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interval = 60;
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break;
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}
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unsigned int samplesize = PAGESIZE / 2;
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if (parser->model == OC1A || parser->model == OC1B)
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samplesize = PAGESIZE;
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int complete = 1;
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unsigned int tank = 0;
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unsigned int pressure = data[header + 2] + (data[header + 3] << 8);
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unsigned int temperature = data[header + 7];
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unsigned int airintegrated = 1;
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if (parser->model == VEO30)
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airintegrated = 0;
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if (pressure == 10000)
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airintegrated = 0;
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unsigned int offset = header + PAGESIZE / 2;
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while (offset + samplesize <= size - PAGESIZE) {
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parser_sample_value_t sample = {0};
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// Ignore empty samples.
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if (array_isequal (data + offset, samplesize, 0x00) ||
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array_isequal (data + offset, samplesize, 0xFF)) {
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offset += samplesize;
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continue;
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}
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// Time.
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if (complete) {
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time += interval;
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sample.time = time;
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if (callback) callback (SAMPLE_TYPE_TIME, sample, userdata);
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complete = 0;
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}
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// The sample size is usually fixed, but some sample types have a
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// larger size. Check whether we have that many bytes available.
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unsigned int length = samplesize;
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if (data[offset + 0] == 0xBB) {
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length = PAGESIZE;
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if (offset + length > size - PAGESIZE)
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return PARSER_STATUS_ERROR;
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}
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// Vendor specific data
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sample.vendor.type = SAMPLE_VENDOR_OCEANIC_ATOM2;
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sample.vendor.size = length;
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sample.vendor.data = data + offset;
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if (callback) callback (SAMPLE_TYPE_VENDOR, sample, userdata);
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// Check for a tank switch sample.
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if (data[offset + 0] == 0xAA) {
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if (parser->model == DATAMASK || parser->model == COMPUMASK) {
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// Tank pressure (1 psi) and number
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tank = 0;
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pressure = (((data[offset + 7] << 8) + data[offset + 6]) & 0x0FFF);
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} else {
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// Tank pressure (2 psi) and number (one based index)
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tank = (data[offset + 1] & 0x03) - 1;
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if (parser->model == ATOM2 || parser->model == EPIC)
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pressure = (((data[offset + 3] << 8) + data[offset + 4]) & 0x0FFF) * 2;
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else
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pressure = (((data[offset + 4] << 8) + data[offset + 5]) & 0x0FFF) * 2;
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}
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} else if (data[offset + 0] == 0xBB) {
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// The surface time is not always a nice multiple of the samplerate.
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// The number of inserted surface samples is therefore rounded down
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// to keep the timestamps aligned at multiples of the samplerate.
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unsigned int surftime = 60 * bcd2dec (data[offset + 1]) + bcd2dec (data[offset + 2]);
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unsigned int nsamples = surftime / interval;
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for (unsigned int i = 0; i < nsamples; ++i) {
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if (complete) {
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time += interval;
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sample.time = time;
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if (callback) callback (SAMPLE_TYPE_TIME, sample, userdata);
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}
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sample.depth = 0.0;
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if (callback) callback (SAMPLE_TYPE_DEPTH, sample, userdata);
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complete = 1;
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}
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} else {
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// Temperature (°F)
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if (parser->model == GEO || parser->model == ATOM1) {
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temperature = data[offset + 6];
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} else if (parser->model == GEO20 || parser->model == VEO20 ||
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parser->model == VEO30 || parser->model == OC1A ||
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parser->model == OC1B) {
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temperature = data[offset + 3];
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} else if (parser->model == VT4 || parser->model == VT41 || parser->model == ATOM3 || parser->model == ATOM31) {
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temperature = ((data[offset + 7] & 0xF0) >> 4) | ((data[offset + 7] & 0x0C) << 2) | ((data[offset + 5] & 0x0C) << 4);
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} else {
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unsigned int sign;
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if (parser->model == ATOM2 || parser->model == EPIC || parser->model == PROPLUS21)
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sign = (data[offset + 0] & 0x80) >> 7;
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else
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sign = (~data[offset + 0] & 0x80) >> 7;
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if (sign)
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temperature -= (data[offset + 7] & 0x0C) >> 2;
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else
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temperature += (data[offset + 7] & 0x0C) >> 2;
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}
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sample.temperature = (temperature - 32.0) * (5.0 / 9.0);
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if (callback) callback (SAMPLE_TYPE_TEMPERATURE, sample, userdata);
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// Tank Pressure (psi)
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if (parser->model == OC1A || parser->model == OC1B)
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pressure = (data[offset + 10] + (data[offset + 11] << 8)) & 0x0FFF;
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else if (parser->model == ZENAIR || parser->model == VT4 || parser->model == VT41|| parser->model == ATOM3 || parser->model == ATOM31)
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pressure = (((data[offset + 0] & 0x03) << 8) + data[offset + 1]) * 5;
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else
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pressure -= data[offset + 1];
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sample.pressure.tank = tank;
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sample.pressure.value = pressure * PSI / BAR;
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if (callback && airintegrated) callback (SAMPLE_TYPE_PRESSURE, sample, userdata);
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// Depth (1/16 ft)
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unsigned int depth;
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if (parser->model == GEO20 || parser->model == VEO20 ||
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parser->model == VEO30 || parser->model == OC1A ||
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parser->model == OC1B)
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depth = (data[offset + 4] + (data[offset + 5] << 8)) & 0x0FFF;
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else if (parser->model == ATOM1)
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depth = data[offset + 3] * 16;
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else
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depth = (data[offset + 2] + (data[offset + 3] << 8)) & 0x0FFF;
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sample.depth = depth / 16.0 * FEET;
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if (callback) callback (SAMPLE_TYPE_DEPTH, sample, userdata);
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complete = 1;
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}
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offset += length;
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}
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return PARSER_STATUS_SUCCESS;
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}
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