d1a06e784c
The vendor_product_parser_create() and vendor_product_device_open() functions should be called indirectly, through the generic dc_device_open() and dc_parser_new() functions. And the vendor_product_extract_dives() functions are internal functions that should never have been part of the public api in the first place.
306 lines
8.0 KiB
C
306 lines
8.0 KiB
C
/*
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* libdivecomputer
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*
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* Copyright (C) 2013 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 <libdivecomputer/units.h>
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#include "diverite_nitekq.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 ISINSTANCE(parser) dc_device_isinstance((parser), &diverite_nitekq_parser_vtable)
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#define SZ_LOGBOOK 6
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#define NGASMIXES 7
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typedef struct diverite_nitekq_parser_t diverite_nitekq_parser_t;
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struct diverite_nitekq_parser_t {
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dc_parser_t base;
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// Cached fields.
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unsigned int cached;
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unsigned int metric;
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unsigned int ngasmixes;
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unsigned int o2[NGASMIXES];
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unsigned int he[NGASMIXES];
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unsigned int divetime;
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double maxdepth;
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};
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static dc_status_t diverite_nitekq_parser_set_data (dc_parser_t *abstract, const unsigned char *data, unsigned int size);
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static dc_status_t diverite_nitekq_parser_get_datetime (dc_parser_t *abstract, dc_datetime_t *datetime);
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static dc_status_t diverite_nitekq_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 diverite_nitekq_parser_samples_foreach (dc_parser_t *abstract, dc_sample_callback_t callback, void *userdata);
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static const dc_parser_vtable_t diverite_nitekq_parser_vtable = {
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sizeof(diverite_nitekq_parser_t),
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DC_FAMILY_DIVERITE_NITEKQ,
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diverite_nitekq_parser_set_data, /* set_data */
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diverite_nitekq_parser_get_datetime, /* datetime */
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diverite_nitekq_parser_get_field, /* fields */
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diverite_nitekq_parser_samples_foreach, /* samples_foreach */
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NULL /* destroy */
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};
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dc_status_t
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diverite_nitekq_parser_create (dc_parser_t **out, dc_context_t *context)
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{
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diverite_nitekq_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 = (diverite_nitekq_parser_t *) dc_parser_allocate (context, &diverite_nitekq_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->metric = 0;
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parser->divetime = 0;
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parser->maxdepth = 0.0;
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parser->ngasmixes = 0;
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for (unsigned int i = 0; i < NGASMIXES; ++i) {
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parser->o2[i] = 0;
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parser->he[i] = 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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diverite_nitekq_parser_set_data (dc_parser_t *abstract, const unsigned char *data, unsigned int size)
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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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diverite_nitekq_parser_get_datetime (dc_parser_t *abstract, dc_datetime_t *datetime)
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{
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if (abstract->size < SZ_LOGBOOK)
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return DC_STATUS_DATAFORMAT;
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const unsigned char *p = abstract->data;
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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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}
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return DC_STATUS_SUCCESS;
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}
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static dc_status_t
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diverite_nitekq_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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diverite_nitekq_parser_t *parser = (diverite_nitekq_parser_t *) abstract;
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if (abstract->size < SZ_LOGBOOK)
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return DC_STATUS_DATAFORMAT;
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dc_gasmix_t *gasmix = (dc_gasmix_t *) value;
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if (!parser->cached) {
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dc_status_t rc = diverite_nitekq_parser_samples_foreach (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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if (value) {
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switch (type) {
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case DC_FIELD_DIVETIME:
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*((unsigned int *) value) = parser->divetime;
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break;
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case DC_FIELD_MAXDEPTH:
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if (parser->metric)
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*((double *) value) = parser->maxdepth / 10.0;
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else
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*((double *) value) = parser->maxdepth * FEET / 10.0;
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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->helium = parser->he[flags] / 100.0;
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gasmix->oxygen = parser->o2[flags] / 100.0;
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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 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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diverite_nitekq_parser_samples_foreach (dc_parser_t *abstract, dc_sample_callback_t callback, void *userdata)
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{
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diverite_nitekq_parser_t *parser = (diverite_nitekq_parser_t *) abstract;
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if (abstract->size < SZ_LOGBOOK)
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return DC_STATUS_DATAFORMAT;
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const unsigned char *data = abstract->data + SZ_LOGBOOK;
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unsigned int size = abstract->size - SZ_LOGBOOK;
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unsigned int type = 0;
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unsigned int metric = 0;
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unsigned int interval = 0;
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unsigned int maxdepth = 0;
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unsigned int oxygen[NGASMIXES];
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unsigned int helium[NGASMIXES];
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unsigned int ngasmixes = 0;
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unsigned int gasmix = 0xFFFFFFFF; /* initialize with impossible value */
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unsigned int gasmix_previous = gasmix;
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unsigned int time = 0;
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unsigned int offset = 0;
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while (offset + 2 <= size) {
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if (data[offset] == 0xFF) {
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unsigned int o2 = 0, he = 0;
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unsigned int i = 0;
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type = data[offset + 1];
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switch (type) {
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case 0x01: // Settings
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if (offset + 27 > size)
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return DC_STATUS_DATAFORMAT;
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metric = (data[offset + 0x10] & 0x04) >> 2;
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interval = data[offset + 0x11];
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offset += 27;
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break;
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case 0x02: // OC Samples
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case 0x03: // CC Samples
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offset += 2;
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break;
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case 0x04: // Gas Change
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if (offset + 7 > size)
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return DC_STATUS_DATAFORMAT;
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// Get the new gas mix.
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o2 = data[offset + 5];
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he = data[offset + 6];
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// Find the gasmix in the list.
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i = 0;
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while (i < ngasmixes) {
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if (o2 == oxygen[i] && he == helium[i])
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break;
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i++;
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}
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// Add it to list if not found.
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if (i >= ngasmixes) {
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if (i >= NGASMIXES) {
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ERROR (abstract->context, "Maximum number of gas mixes reached.");
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return DC_STATUS_DATAFORMAT;
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}
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oxygen[i] = o2;
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helium[i] = he;
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ngasmixes = i + 1;
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}
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// Remember the index.
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gasmix = i;
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offset += 7;
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break;
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default:
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ERROR (abstract->context, "Unknown type %02x", type);
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return DC_STATUS_DATAFORMAT;
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}
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} else if (type == 2 || type == 3) {
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dc_sample_value_t sample = {0};
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if (interval == 0) {
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ERROR (abstract->context, "No sample interval present.");
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return DC_STATUS_DATAFORMAT;
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}
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// Time (seconds).
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time += interval;
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sample.time = time;
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if (callback) callback (DC_SAMPLE_TIME, sample, userdata);
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// Gas change
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if (gasmix != gasmix_previous) {
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sample.gasmix = gasmix;
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if (callback) callback (DC_SAMPLE_GASMIX, sample, userdata);
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gasmix_previous = gasmix;
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}
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// Depth (1/10 m or ft).
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unsigned int depth = array_uint16_be (data + offset);
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if (maxdepth < depth)
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maxdepth = depth;
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if (metric)
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sample.depth = depth / 10.0;
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else
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sample.depth = depth * FEET / 10.0;
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if (callback) callback (DC_SAMPLE_DEPTH, sample, userdata);
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offset += 2;
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// PPO2
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if (type == 3) {
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if (offset + 1 > size)
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return DC_STATUS_DATAFORMAT;
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unsigned int ppo2 = data[offset];
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sample.ppo2 = ppo2 / 100.0;
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if (callback) callback (DC_SAMPLE_PPO2, sample, userdata);
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offset++;
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}
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} else {
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ERROR (abstract->context, "Invalid sample type %02x.", type);
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return DC_STATUS_DATAFORMAT;
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}
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}
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// Cache the data for later use.
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for (unsigned int i = 0; i < ngasmixes; ++i) {
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parser->he[i] = helium[i];
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parser->o2[i] = oxygen[i];
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}
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parser->ngasmixes = ngasmixes;
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parser->maxdepth = maxdepth;
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parser->divetime = time;
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parser->metric = metric;
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parser->cached = 1;
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return DC_STATUS_SUCCESS;
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}
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