becb8bd36e
For gas consumption calculations it's very convenient to know whether a tank is used for example in a sidemount configuration, or as oxygen/diluent tank on a rebreather. For rebreather dives, it's convenient to know whether a gas mix is used as a closed-circuit mix (oxygen/diluent) or as an open circuit mix (bailout).
788 lines
23 KiB
C
788 lines
23 KiB
C
/*
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* libdivecomputer
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*
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* Copyright (C) 2021 Ryan Gardner, 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 <stdio.h>
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#include <stdarg.h>
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#include <string.h>
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#include <libdivecomputer/units.h>
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#include "deepsix_excursion.h"
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#include "context-private.h"
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#include "parser-private.h"
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#include "array.h"
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#define HEADERSIZE_MIN 128
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#define MAX_SAMPLES 7
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#define MAX_EVENTS 7
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#define MAX_GASMIXES 20
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#define ALARM 0x0001
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#define TEMPERATURE 0x0002
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#define DECO 0x0003
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#define CEILING 0x0004
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#define CNS 0x0005
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#define SAMPLE_TEMPERATURE 0
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#define SAMPLE_DECO_NDL 1
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#define SAMPLE_CNS 2
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#define EVENT_CHANGE_GAS 7
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#define EVENT_ALARMS 8
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#define EVENT_CHANGE_SETPOINT 9
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#define EVENT_SAMPLES_MISSED 10
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#define EVENT_RESERVED 15
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#define ALARM_ASCENTRATE 0
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#define ALARM_CEILING 1
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#define ALARM_PO2 2
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#define ALARM_MAXDEPTH 3
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#define ALARM_DIVETIME 4
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#define ALARM_CNS 5
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#define DECOSTOP 0x02
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#define SAFETYSTOP 0x04
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#define DENSITY 1024
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#define UNDEFINED 0xFFFFFFFF
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#define FWVERSION(major,minor) ( \
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((((major) + '0') & 0xFF) << 8) | \
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((minor) & 0xFF))
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typedef struct deepsix_excursion_layout_t {
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unsigned int headersize;
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unsigned int version;
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unsigned int divemode;
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unsigned int samplerate;
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unsigned int salinity;
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unsigned int datetime;
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unsigned int divetime;
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unsigned int maxdepth;
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unsigned int temperature_min;
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unsigned int avgdepth;
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unsigned int firmware;
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unsigned int temperature_surf;
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unsigned int atmospheric;
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unsigned int gf;
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} deepsix_excursion_layout_t;
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typedef struct deepsix_excursion_gasmix_t {
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unsigned int id;
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unsigned int oxygen;
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unsigned int helium;
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} deepsix_excursion_gasmix_t;
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typedef struct deepsix_excursion_sample_info_t {
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unsigned int type;
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unsigned int divisor;
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unsigned int size;
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} deepsix_excursion_sample_info_t;
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typedef struct deepsix_excursion_event_info_t {
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unsigned int type;
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unsigned int size;
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} deepsix_excursion_event_info_t;
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typedef struct deepsix_excursion_parser_t {
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dc_parser_t base;
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unsigned int cached;
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unsigned int ngasmixes;
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deepsix_excursion_gasmix_t gasmix[MAX_GASMIXES];
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} deepsix_excursion_parser_t;
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static dc_status_t deepsix_excursion_parser_set_data (dc_parser_t *abstract, const unsigned char *data, unsigned int size);
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static dc_status_t deepsix_excursion_parser_get_datetime (dc_parser_t *abstract, dc_datetime_t *datetime);
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static dc_status_t deepsix_excursion_parser_get_field (dc_parser_t *abstract, dc_field_type_t type, unsigned int flags, void *value);
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static dc_status_t deepsix_excursion_parser_samples_foreach (dc_parser_t *abstract, dc_sample_callback_t callback, void *userdata);
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static dc_status_t deepsix_excursion_parser_samples_foreach_v0 (dc_parser_t *abstract, dc_sample_callback_t callback, void *userdata);
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static dc_status_t deepsix_excursion_parser_samples_foreach_v1 (dc_parser_t *abstract, dc_sample_callback_t callback, void *userdata);
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static const dc_parser_vtable_t deepsix_parser_vtable = {
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sizeof(deepsix_excursion_parser_t),
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DC_FAMILY_DEEPSIX_EXCURSION,
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deepsix_excursion_parser_set_data, /* set_data */
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NULL, /* set_clock */
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NULL, /* set_atmospheric */
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NULL, /* set_density */
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deepsix_excursion_parser_get_datetime, /* datetime */
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deepsix_excursion_parser_get_field, /* fields */
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deepsix_excursion_parser_samples_foreach, /* samples_foreach */
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NULL /* destroy */
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};
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static const deepsix_excursion_layout_t deepsix_excursion_layout_v0 = {
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156,/* headersize */
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UNDEFINED, /* version */
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4, /* divemode */
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24, /* samplerate */
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UNDEFINED, /* salinity */
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12, /* datetime */
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20, /* divetime */
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28, /* maxdepth */
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32, /* temperature_min */
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UNDEFINED, /* avgdepth */
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48, /* firmware */
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UNDEFINED, /* temperature_surf */
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56, /* atmospheric */
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UNDEFINED, /* gf */
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};
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static const deepsix_excursion_layout_t deepsix_excursion_layout_v1 = {
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129,/* headersize */
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3, /* version */
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4, /* divemode */
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5, /* samplerate */
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7, /* salinity */
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12, /* datetime */
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19, /* divetime */
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29, /* maxdepth */
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31, /* temperature_min */
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33, /* avgdepth */
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35, /* firmware */
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43, /* temperature_surf */
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45, /* atmospheric */
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127, /* gf */
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};
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static double
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pressure_to_depth(unsigned int depth, unsigned int atmospheric, unsigned int density)
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{
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return ((signed int)(depth - atmospheric)) * (BAR / 1000.0) / (density * GRAVITY);
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}
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static unsigned int
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deepsix_excursion_find_gasmix(deepsix_excursion_parser_t *parser, unsigned int o2, unsigned int he, unsigned int id)
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{
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unsigned int i = 0;
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while (i < parser->ngasmixes) {
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if (o2 == parser->gasmix[i].oxygen && he == parser->gasmix[i].helium && id == parser->gasmix[i].id)
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break;
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i++;
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}
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return i;
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}
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dc_status_t
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deepsix_excursion_parser_create (dc_parser_t **out, dc_context_t *context)
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{
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deepsix_excursion_parser_t *parser = NULL;
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if (out == NULL)
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return DC_STATUS_INVALIDARGS;
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// Allocate memory.
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parser = (deepsix_excursion_parser_t *) dc_parser_allocate (context, &deepsix_parser_vtable);
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if (parser == NULL) {
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ERROR (context, "Failed to allocate memory.");
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return DC_STATUS_NOMEMORY;
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}
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// Set the default values.
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parser->cached = 0;
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parser->ngasmixes = 0;
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for (unsigned int i = 0; i < MAX_GASMIXES; ++i) {
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parser->gasmix[i].id = 0;
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parser->gasmix[i].oxygen = 0;
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parser->gasmix[i].helium = 0;
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}
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*out = (dc_parser_t *) parser;
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return DC_STATUS_SUCCESS;
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}
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static dc_status_t
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deepsix_excursion_parser_set_data (dc_parser_t *abstract, const unsigned char *data, unsigned int size)
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{
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deepsix_excursion_parser_t *parser = (deepsix_excursion_parser_t *) abstract;
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// Reset the cache.
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parser->cached = 0;
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parser->ngasmixes = 0;
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for (unsigned int i = 0; i < MAX_GASMIXES; ++i) {
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parser->gasmix[i].id = 0;
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parser->gasmix[i].oxygen = 0;
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parser->gasmix[i].helium = 0;
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}
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return DC_STATUS_SUCCESS;
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}
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static dc_status_t
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deepsix_excursion_parser_get_datetime (dc_parser_t *abstract, dc_datetime_t *datetime)
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{
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const unsigned char *data = abstract->data;
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unsigned int size = abstract->size;
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if (size < HEADERSIZE_MIN)
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return DC_STATUS_DATAFORMAT;
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unsigned int version = data[3];
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const deepsix_excursion_layout_t *layout = version == 0 ?
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&deepsix_excursion_layout_v0 : &deepsix_excursion_layout_v1;
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if (size < layout->headersize)
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return DC_STATUS_DATAFORMAT;
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unsigned int firmware = array_uint16_be (data + layout->firmware + 4);
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const unsigned char *p = data + layout->datetime;
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if (datetime) {
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datetime->year = p[0] + 2000;
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datetime->month = p[1];
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datetime->day = p[2];
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datetime->hour = p[3];
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datetime->minute = p[4];
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datetime->second = p[5];
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if (version == 0) {
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if (firmware >= FWVERSION(5, 'B')) {
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datetime->timezone = (p[6] - 12) * 3600;
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} else {
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datetime->timezone = DC_TIMEZONE_NONE;
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}
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} else {
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datetime->timezone = ((signed char) p[6]) * 900;
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}
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}
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return DC_STATUS_SUCCESS;
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}
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static dc_status_t
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deepsix_excursion_parser_get_field (dc_parser_t *abstract, dc_field_type_t type, unsigned int flags, void *value)
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{
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deepsix_excursion_parser_t *parser = (deepsix_excursion_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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dc_gasmix_t *gasmix = (dc_gasmix_t *) value;
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dc_salinity_t *water = (dc_salinity_t *) value;
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dc_decomodel_t *decomodel = (dc_decomodel_t *) value;
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if (size < HEADERSIZE_MIN)
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return DC_STATUS_DATAFORMAT;
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unsigned int version = data[3];
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const deepsix_excursion_layout_t *layout = version == 0 ?
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&deepsix_excursion_layout_v0 : &deepsix_excursion_layout_v1;
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if (size < layout->headersize)
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return DC_STATUS_DATAFORMAT;
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if (version != 0 && !parser->cached) {
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dc_status_t rc = deepsix_excursion_parser_samples_foreach_v1(abstract, NULL, NULL);
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if (rc != DC_STATUS_SUCCESS)
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return rc;
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}
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unsigned int atmospheric = array_uint16_le(data + layout->atmospheric);
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unsigned int density = DENSITY;
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if (layout->salinity != UNDEFINED) {
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density = 1000 + data[layout->salinity] * 10;
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}
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if (value) {
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switch (type) {
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case DC_FIELD_DIVETIME:
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*((unsigned int *) value) = array_uint32_le(data + layout->divetime);
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break;
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case DC_FIELD_MAXDEPTH:
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*((double *) value) = pressure_to_depth(array_uint16_le(data + layout->maxdepth), atmospheric, density);
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break;
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case DC_FIELD_AVGDEPTH:
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if (layout->avgdepth == UNDEFINED)
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return DC_STATUS_UNSUPPORTED;
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*((double *) value) = pressure_to_depth(array_uint16_le(data + layout->avgdepth), atmospheric, density);
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break;
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case DC_FIELD_GASMIX_COUNT:
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*((unsigned int *) value) = parser->ngasmixes;
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break;
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case DC_FIELD_GASMIX:
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gasmix->usage = DC_USAGE_NONE;
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gasmix->oxygen = parser->gasmix[flags].oxygen / 100.0;
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gasmix->helium = parser->gasmix[flags].helium / 100.0;
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gasmix->nitrogen = 1.0 - gasmix->oxygen - gasmix->helium;
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break;
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case DC_FIELD_TEMPERATURE_MINIMUM:
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*((double *) value) = (signed int) array_uint16_le(data + layout->temperature_min) / 10.0;
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break;
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case DC_FIELD_TEMPERATURE_SURFACE:
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if (layout->temperature_surf == UNDEFINED)
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return DC_STATUS_UNSUPPORTED;
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*((double *) value) = (signed int) array_uint16_le(data + layout->temperature_surf) / 10.0;
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break;
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case DC_FIELD_ATMOSPHERIC:
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*((double *) value) = atmospheric / 1000.0;
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break;
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case DC_FIELD_SALINITY:
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water->type = (density == 1000) ? DC_WATER_FRESH : DC_WATER_SALT;
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water->density = density;
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break;
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case DC_FIELD_DIVEMODE:
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switch (data[layout->divemode]) {
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case 0:
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*((dc_divemode_t *) value) = DC_DIVEMODE_OC;
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break;
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case 1:
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*((dc_divemode_t *) value) = DC_DIVEMODE_GAUGE;
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break;
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case 2:
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*((dc_divemode_t *) value) = DC_DIVEMODE_FREEDIVE;
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break;
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default:
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return DC_STATUS_DATAFORMAT;
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}
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break;
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case DC_FIELD_DECOMODEL:
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decomodel->type = DC_DECOMODEL_BUHLMANN;
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decomodel->conservatism = 0;
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if (layout->gf != UNDEFINED) {
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decomodel->params.gf.low = data[layout->gf + 0];
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decomodel->params.gf.high = data[layout->gf + 1];
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} else {
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decomodel->params.gf.low = 0;
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decomodel->params.gf.high = 0;
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}
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break;
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default:
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return DC_STATUS_UNSUPPORTED;
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}
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}
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return DC_STATUS_SUCCESS;
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}
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static dc_status_t
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deepsix_excursion_parser_samples_foreach_v0 (dc_parser_t *abstract, dc_sample_callback_t callback, void *userdata)
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{
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const unsigned char *data = abstract->data;
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unsigned int size = abstract->size;
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const deepsix_excursion_layout_t *layout = &deepsix_excursion_layout_v0;
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if (size < layout->headersize)
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return DC_STATUS_DATAFORMAT;
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int firmware4c = memcmp(data + layout->firmware, "D01-4C", 6) == 0;
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unsigned int maxtype = firmware4c ? TEMPERATURE : CNS;
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unsigned int interval = array_uint32_le(data + layout->samplerate);
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unsigned int atmospheric = array_uint32_le(data + layout->atmospheric);
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unsigned int time = 0;
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unsigned int offset = layout->headersize;
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while (offset + 1 < size) {
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dc_sample_value_t sample = {0};
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// Get the sample type.
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unsigned int type = data[offset];
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if (type < 1 || type > maxtype) {
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ERROR (abstract->context, "Unknown sample type (%u).", type);
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return DC_STATUS_DATAFORMAT;
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}
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// Get the sample length.
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unsigned int length = 1;
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if (type == ALARM || type == CEILING) {
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length = 8;
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} else if (type == TEMPERATURE || type == DECO || type == CNS) {
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length = 6;
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}
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// Verify the length.
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if (offset + length > size) {
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WARNING (abstract->context, "Unexpected end of data.");
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break;
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}
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unsigned int misc = data[offset + 1];
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unsigned int depth = array_uint16_le(data + offset + 2);
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if (type == TEMPERATURE) {
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time += interval;
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sample.time = time * 1000;
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if (callback) callback(DC_SAMPLE_TIME, sample, userdata);
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sample.depth = pressure_to_depth(depth, atmospheric, DENSITY);
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if (callback) callback(DC_SAMPLE_DEPTH, sample, userdata);
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}
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if (type == ALARM) {
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unsigned int alarm_time = array_uint16_le(data + offset + 4);
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unsigned int alarm_value = array_uint16_le(data + offset + 6);
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} else if (type == TEMPERATURE) {
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unsigned int temperature = array_uint16_le(data + offset + 4);
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if (firmware4c) {
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if (temperature > 1300) {
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length = 8;
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} else if (temperature >= 10) {
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sample.temperature = temperature / 10.0;
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if (callback) callback(DC_SAMPLE_TEMPERATURE, sample, userdata);
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}
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} else {
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sample.temperature = temperature / 10.0;
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if (callback) callback(DC_SAMPLE_TEMPERATURE, sample, userdata);
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}
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} else if (type == DECO) {
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unsigned int deco = array_uint16_le(data + offset + 4);
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} else if (type == CEILING) {
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unsigned int ceiling_depth = array_uint16_le(data + offset + 4);
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unsigned int ceiling_time = array_uint16_le(data + offset + 6);
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} else if (type == CNS) {
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unsigned int cns = array_uint16_le(data + offset + 4);
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sample.cns = cns / 100.0;
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if (callback) callback(DC_SAMPLE_CNS, sample, userdata);
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}
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offset += length;
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}
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return DC_STATUS_SUCCESS;
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}
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static dc_status_t
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deepsix_excursion_parser_samples_foreach_v1 (dc_parser_t *abstract, dc_sample_callback_t callback, void *userdata)
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{
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deepsix_excursion_parser_t *parser = (deepsix_excursion_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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const deepsix_excursion_layout_t *layout = &deepsix_excursion_layout_v1;
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if (size < layout->headersize)
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return DC_STATUS_DATAFORMAT;
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unsigned int headersize = data[2];
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if (headersize < layout->headersize)
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return DC_STATUS_DATAFORMAT;
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unsigned int samplerate = data[layout->samplerate];
|
|
unsigned int atmospheric = array_uint16_le(data + layout->atmospheric);
|
|
unsigned int density = 1000 + data[layout->salinity] * 10;
|
|
|
|
unsigned int offset = headersize;
|
|
if (offset + 1 > size) {
|
|
ERROR (abstract->context, "Buffer overflow detected!");
|
|
return DC_STATUS_DATAFORMAT;
|
|
}
|
|
|
|
unsigned int nconfig = data[offset];
|
|
if (nconfig > MAX_SAMPLES) {
|
|
ERROR(abstract->context, "Too many sample descriptors (%u).", nconfig);
|
|
return DC_STATUS_DATAFORMAT;
|
|
}
|
|
|
|
offset += 1;
|
|
|
|
if (offset + 3 * nconfig > size) {
|
|
ERROR (abstract->context, "Buffer overflow detected!");
|
|
return DC_STATUS_DATAFORMAT;
|
|
}
|
|
|
|
deepsix_excursion_sample_info_t sample_info[MAX_SAMPLES] = {{0}};
|
|
for (unsigned int i = 0; i < nconfig; i++) {
|
|
sample_info[i].type = data[offset + 3 * i + 0];
|
|
sample_info[i].size = data[offset + 3 * i + 1];
|
|
sample_info[i].divisor = data[offset + 3 * i + 2];
|
|
|
|
if (sample_info[i].divisor) {
|
|
switch (sample_info[i].type) {
|
|
case SAMPLE_CNS:
|
|
case SAMPLE_TEMPERATURE:
|
|
if (sample_info[i].size != 2) {
|
|
ERROR(abstract->context, "Unexpected sample size (%u).", sample_info[i].size);
|
|
return DC_STATUS_DATAFORMAT;
|
|
}
|
|
break;
|
|
case SAMPLE_DECO_NDL:
|
|
if (sample_info[i].size != 7) {
|
|
ERROR(abstract->context, "Unexpected sample size (%u).", sample_info[i].size);
|
|
return DC_STATUS_DATAFORMAT;
|
|
}
|
|
break;
|
|
default:
|
|
WARNING (abstract->context, "Unknown sample descriptor (%u %u %u).",
|
|
sample_info[i].type, sample_info[i].size, sample_info[i].divisor);
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
offset += 3 * nconfig;
|
|
|
|
if (offset + 1 > size) {
|
|
ERROR (abstract->context, "Buffer overflow detected!");
|
|
return DC_STATUS_DATAFORMAT;
|
|
}
|
|
|
|
unsigned int nevents = data[offset];
|
|
if (nevents > MAX_EVENTS) {
|
|
ERROR(abstract->context, "Too many event descriptors (%u).", nevents);
|
|
return DC_STATUS_DATAFORMAT;
|
|
}
|
|
|
|
offset += 1;
|
|
|
|
if (offset + 2 * nevents > size) {
|
|
ERROR (abstract->context, "Buffer overflow detected!");
|
|
return DC_STATUS_DATAFORMAT;
|
|
}
|
|
|
|
deepsix_excursion_event_info_t event_info[MAX_EVENTS] = {{0}};
|
|
for (unsigned int i = 0; i < nevents; i++) {
|
|
event_info[i].type = data[offset + 2 * i];
|
|
event_info[i].size = data[offset + 2 * i + 1];
|
|
|
|
switch (event_info[i].type) {
|
|
case EVENT_ALARMS:
|
|
if (event_info[i].size != 1) {
|
|
ERROR(abstract->context, "Unexpected event size (%u).", event_info[i].size);
|
|
return DC_STATUS_DATAFORMAT;
|
|
}
|
|
break;
|
|
case EVENT_CHANGE_GAS:
|
|
if (event_info[i].size != 3) {
|
|
ERROR(abstract->context, "Unexpected event size (%u).", event_info[i].size);
|
|
return DC_STATUS_DATAFORMAT;
|
|
}
|
|
break;
|
|
case EVENT_SAMPLES_MISSED:
|
|
if (event_info[i].size != 6) {
|
|
ERROR(abstract->context, "Unexpected event size (%u).", event_info[i].size);
|
|
return DC_STATUS_DATAFORMAT;
|
|
}
|
|
break;
|
|
default:
|
|
WARNING (abstract->context, "Unknown event descriptor (%u %u).",
|
|
event_info[i].type, event_info[i].size);
|
|
break;
|
|
}
|
|
}
|
|
|
|
offset += 2 * nevents;
|
|
|
|
unsigned int time = 0;
|
|
unsigned int nsamples = 0;
|
|
while (offset + 3 <= size) {
|
|
dc_sample_value_t sample = {0};
|
|
nsamples++;
|
|
|
|
// Time (seconds).
|
|
time += samplerate;
|
|
sample.time = time * 1000;
|
|
if (callback) callback (DC_SAMPLE_TIME, sample, userdata);
|
|
|
|
unsigned int depth = array_uint16_le (data + offset);
|
|
sample.depth = pressure_to_depth(depth, atmospheric, density);
|
|
if (callback) callback (DC_SAMPLE_DEPTH, sample, userdata);
|
|
offset += 2;
|
|
|
|
// event info
|
|
unsigned int length = data[offset];
|
|
offset += 1;
|
|
|
|
if (offset + length > size) {
|
|
ERROR (abstract->context, "Buffer overflow detected!");
|
|
return DC_STATUS_DATAFORMAT;
|
|
}
|
|
|
|
if (length) {
|
|
if (length < 2) {
|
|
ERROR (abstract->context, "Buffer overflow detected!");
|
|
return DC_STATUS_DATAFORMAT;
|
|
}
|
|
|
|
unsigned int events = array_uint16_le (data + offset);
|
|
unsigned int event_offset = 2;
|
|
|
|
for (unsigned int i = 0; i < nevents; i++) {
|
|
if ((events & (1 << event_info[i].type)) == 0)
|
|
continue;
|
|
|
|
if (event_offset + event_info[i].size > length) {
|
|
ERROR (abstract->context, "Buffer overflow detected!");
|
|
return DC_STATUS_DATAFORMAT;
|
|
}
|
|
|
|
unsigned int alarms = 0;
|
|
unsigned int id = 0, o2 = 0, he = 0;
|
|
unsigned int mix_idx = 0;
|
|
unsigned int count = 0, timestamp = 0;
|
|
switch (event_info[i].type) {
|
|
case EVENT_ALARMS:
|
|
alarms = data[offset + event_offset];
|
|
for (unsigned int v = alarms, j = 0; v; v >>= 1, ++j) {
|
|
if ((v & 1) == 0)
|
|
continue;
|
|
|
|
sample.event.type = SAMPLE_EVENT_NONE;
|
|
sample.event.time = 0;
|
|
sample.event.flags = 0;
|
|
sample.event.value = 0;
|
|
switch (j) {
|
|
case ALARM_ASCENTRATE:
|
|
sample.event.type = SAMPLE_EVENT_ASCENT;
|
|
break;
|
|
case ALARM_CEILING:
|
|
sample.event.type = SAMPLE_EVENT_CEILING;
|
|
break;
|
|
case ALARM_PO2:
|
|
sample.event.type = SAMPLE_EVENT_PO2;
|
|
break;
|
|
case ALARM_MAXDEPTH:
|
|
sample.event.type = SAMPLE_EVENT_MAXDEPTH;
|
|
break;
|
|
case ALARM_DIVETIME:
|
|
sample.event.type = SAMPLE_EVENT_DIVETIME;
|
|
break;
|
|
case ALARM_CNS:
|
|
break;
|
|
default:
|
|
WARNING (abstract->context, "Unknown event (%u).", j);
|
|
break;
|
|
}
|
|
if (sample.event.type != SAMPLE_EVENT_NONE) {
|
|
if (callback) callback (DC_SAMPLE_EVENT, sample, userdata);
|
|
}
|
|
}
|
|
break;
|
|
case EVENT_CHANGE_GAS:
|
|
id = data[offset + event_offset];
|
|
o2 = data[offset + event_offset + 1];
|
|
he = data[offset + event_offset + 2];
|
|
|
|
mix_idx = deepsix_excursion_find_gasmix(parser, o2, he, id);
|
|
if (mix_idx >= parser->ngasmixes) {
|
|
if (mix_idx >= MAX_GASMIXES) {
|
|
ERROR (abstract->context, "Maximum number of gas mixes reached.");
|
|
return DC_STATUS_NOMEMORY;
|
|
}
|
|
parser->gasmix[mix_idx].oxygen = o2;
|
|
parser->gasmix[mix_idx].helium = he;
|
|
parser->gasmix[mix_idx].id = id;
|
|
parser->ngasmixes = mix_idx + 1;
|
|
}
|
|
|
|
sample.gasmix = mix_idx;
|
|
if (callback) callback(DC_SAMPLE_GASMIX, sample, userdata);
|
|
break;
|
|
case EVENT_SAMPLES_MISSED:
|
|
count = array_uint16_le(data + offset + event_offset);
|
|
timestamp = array_uint32_le(data + offset + event_offset + 2);
|
|
if (timestamp < time) {
|
|
ERROR (abstract->context, "Timestamp moved backwards (%u %u).", timestamp, time);
|
|
return DC_STATUS_DATAFORMAT;
|
|
}
|
|
nsamples += count;
|
|
time = timestamp;
|
|
break;
|
|
default:
|
|
WARNING (abstract->context, "Unknown event (%u %u).",
|
|
event_info[i].type, event_info[i].size);
|
|
break;
|
|
}
|
|
event_offset += event_info[i].size;
|
|
}
|
|
|
|
// Skip remaining sample bytes (if any).
|
|
if (event_offset < length) {
|
|
WARNING (abstract->context, "Remaining %u bytes skipped.", length - event_offset);
|
|
}
|
|
offset += length;
|
|
}
|
|
|
|
for (unsigned int i = 0; i < nconfig; ++i) {
|
|
if (sample_info[i].divisor && (nsamples % sample_info[i].divisor) == 0) {
|
|
if (offset + sample_info[i].size > size) {
|
|
ERROR (abstract->context, "Buffer overflow detected!");
|
|
return DC_STATUS_DATAFORMAT;
|
|
}
|
|
|
|
unsigned int value = 0;
|
|
unsigned int deco_flags = 0, deco_ndl_tts = 0;
|
|
unsigned int deco_depth = 0, deco_time = 0;
|
|
switch (sample_info[i].type) {
|
|
case SAMPLE_TEMPERATURE:
|
|
value = array_uint16_le(data + offset);
|
|
sample.temperature = value / 10.0;
|
|
if (callback) callback(DC_SAMPLE_TEMPERATURE, sample, userdata);
|
|
break;
|
|
case SAMPLE_CNS:
|
|
value = array_uint16_le(data + offset);
|
|
sample.cns = value / 10000.0;
|
|
if (callback) callback (DC_SAMPLE_CNS, sample, userdata);
|
|
break;
|
|
case SAMPLE_DECO_NDL:
|
|
deco_flags = data[offset];
|
|
deco_ndl_tts = array_uint16_le(data + offset + 1);
|
|
deco_depth = array_uint16_le(data + offset + 3);
|
|
deco_time = array_uint16_le(data + offset + 5);
|
|
if (deco_flags & DECOSTOP) {
|
|
sample.deco.type = DC_DECO_DECOSTOP;
|
|
sample.deco.depth = pressure_to_depth(deco_depth, atmospheric, density);
|
|
sample.deco.time = deco_time;
|
|
} else if (deco_flags & SAFETYSTOP) {
|
|
sample.deco.type = DC_DECO_SAFETYSTOP;
|
|
sample.deco.depth = pressure_to_depth(deco_depth, atmospheric, density);
|
|
sample.deco.time = deco_time;
|
|
} else {
|
|
sample.deco.type = DC_DECO_NDL;
|
|
sample.deco.depth = 0;
|
|
sample.deco.time = deco_ndl_tts;
|
|
}
|
|
if (callback) callback (DC_SAMPLE_DECO, sample, userdata);
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
offset += sample_info[i].size;
|
|
}
|
|
}
|
|
}
|
|
|
|
parser->cached = 1;
|
|
|
|
return DC_STATUS_SUCCESS;
|
|
}
|
|
|
|
static dc_status_t
|
|
deepsix_excursion_parser_samples_foreach (dc_parser_t *abstract, dc_sample_callback_t callback, void *userdata)
|
|
{
|
|
const unsigned char *data = abstract->data;
|
|
unsigned int size = abstract->size;
|
|
|
|
if (size < HEADERSIZE_MIN)
|
|
return DC_STATUS_DATAFORMAT;
|
|
|
|
unsigned int version = data[3];
|
|
|
|
if (version == 0) {
|
|
return deepsix_excursion_parser_samples_foreach_v0(abstract, callback, userdata);
|
|
} else {
|
|
return deepsix_excursion_parser_samples_foreach_v1(abstract, callback, userdata);
|
|
}
|
|
}
|