ff29d218bb
Both the allocation and initialization of the object data structure is now moved to a single function. The corresponding deallocation function is intended to free objects that have been allocated, but are not fully initialized yet. The public cleanup function shouldn't be used in such case, because it may try to release resources that haven't been initialized yet.
257 lines
6.9 KiB
C
257 lines
6.9 KiB
C
/*
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* libdivecomputer
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*
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* Copyright (C) 2011 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 <string.h>
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#include <libdivecomputer/mares_darwin.h>
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#include <libdivecomputer/units.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_parser_isinstance((parser), &mares_darwin_parser_vtable)
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#define DARWIN 0
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#define DARWINAIR 1
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typedef struct mares_darwin_parser_t mares_darwin_parser_t;
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struct mares_darwin_parser_t {
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dc_parser_t base;
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unsigned int model;
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unsigned int headersize;
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unsigned int samplesize;
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};
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static dc_status_t mares_darwin_parser_set_data (dc_parser_t *abstract, const unsigned char *data, unsigned int size);
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static dc_status_t mares_darwin_parser_get_datetime (dc_parser_t *abstract, dc_datetime_t *datetime);
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static dc_status_t mares_darwin_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 mares_darwin_parser_samples_foreach (dc_parser_t *abstract, dc_sample_callback_t callback, void *userdata);
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static const dc_parser_vtable_t mares_darwin_parser_vtable = {
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sizeof(mares_darwin_parser_t),
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DC_FAMILY_MARES_DARWIN,
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mares_darwin_parser_set_data, /* set_data */
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mares_darwin_parser_get_datetime, /* datetime */
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mares_darwin_parser_get_field, /* fields */
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mares_darwin_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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mares_darwin_parser_create (dc_parser_t **out, dc_context_t *context, unsigned int model)
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{
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mares_darwin_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 = (mares_darwin_parser_t *) dc_parser_allocate (context, &mares_darwin_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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parser->model = model;
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if (model == DARWINAIR) {
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parser->headersize = 60;
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parser->samplesize = 3;
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} else {
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parser->headersize = 52;
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parser->samplesize = 2;
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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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mares_darwin_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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mares_darwin_parser_get_datetime (dc_parser_t *abstract, dc_datetime_t *datetime)
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{
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mares_darwin_parser_t *parser = (mares_darwin_parser_t *) abstract;
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if (abstract->size < parser->headersize)
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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 = array_uint16_be (p);
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datetime->month = p[2];
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datetime->day = p[3];
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datetime->hour = p[4];
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datetime->minute = p[5];
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datetime->second = 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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mares_darwin_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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mares_darwin_parser_t *parser = (mares_darwin_parser_t *) abstract;
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if (abstract->size < parser->headersize)
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return DC_STATUS_DATAFORMAT;
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const unsigned char *p = abstract->data;
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dc_gasmix_t *gasmix = (dc_gasmix_t *) value;
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dc_tank_t *tank = (dc_tank_t *) value;
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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_uint16_be (p + 0x06) * 20;
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break;
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case DC_FIELD_MAXDEPTH:
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*((double *) value) = array_uint16_be (p + 0x08) / 10.0;
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break;
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case DC_FIELD_GASMIX_COUNT:
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*((unsigned int *) value) = 1;
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break;
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case DC_FIELD_GASMIX:
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gasmix->helium = 0.0;
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gasmix->oxygen = 0.21;
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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 char) p[0x0A];
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break;
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case DC_FIELD_TANK_COUNT:
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if (parser->model == DARWINAIR) {
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*((unsigned int *) value) = 1;
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} else {
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*((unsigned int *) value) = 0;
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}
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break;
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case DC_FIELD_TANK:
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if (parser->model == DARWINAIR) {
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tank->type = DC_TANKVOLUME_METRIC;
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tank->volume = p[0x13] / 10.0;
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tank->workpressure = 0.0;
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tank->gasmix = 0;
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tank->beginpressure = array_uint16_be (p + 0x17);
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tank->endpressure = array_uint16_be (p + 0x19);
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} else {
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return DC_STATUS_UNSUPPORTED;
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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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mares_darwin_parser_samples_foreach (dc_parser_t *abstract, dc_sample_callback_t callback, void *userdata)
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{
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mares_darwin_parser_t *parser = (mares_darwin_parser_t *) abstract;
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if (abstract->size < parser->headersize)
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return DC_STATUS_DATAFORMAT;
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unsigned int time = 0;
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unsigned int pressure = array_uint16_be (abstract->data + 0x17);
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unsigned int offset = parser->headersize;
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while (offset + parser->samplesize <= abstract->size) {
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dc_sample_value_t sample = {0};
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unsigned int value = array_uint16_le (abstract->data + offset);
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unsigned int depth = value & 0x07FF;
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unsigned int ascent = (value & 0xE000) >> 13;
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unsigned int violation = (value & 0x1000) >> 12;
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unsigned int deco = (value & 0x0800) >> 11;
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// Surface Time (seconds).
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time += 20;
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sample.time = time;
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if (callback) callback (DC_SAMPLE_TIME, sample, userdata);
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// Depth (1/10 m).
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sample.depth = depth / 10.0;
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if (callback) callback (DC_SAMPLE_DEPTH, sample, userdata);
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// Ascent rate
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if (ascent) {
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sample.event.type = SAMPLE_EVENT_ASCENT;
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sample.event.time = 0;
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sample.event.flags = 0;
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sample.event.value = ascent;
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if (callback) callback (DC_SAMPLE_EVENT, sample, userdata);
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}
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// Deco violation
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if (violation) {
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sample.event.type = SAMPLE_EVENT_CEILING;
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sample.event.time = 0;
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sample.event.flags = 0;
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sample.event.value = 0;
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if (callback) callback (DC_SAMPLE_EVENT, sample, userdata);
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}
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// Deco stop
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if (deco) {
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sample.event.type = SAMPLE_EVENT_DECOSTOP;
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sample.event.time = 0;
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sample.event.flags = 0;
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sample.event.value = 0;
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if (callback) callback (DC_SAMPLE_EVENT, sample, userdata);
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}
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if (parser->samplesize == 3) {
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unsigned int type = (time / 20 + 2) % 3;
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if (type == 0) {
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// Tank Pressure (bar)
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pressure -= abstract->data[offset + 2];
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sample.pressure.tank = 0;
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sample.pressure.value = pressure;
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if (callback) callback (DC_SAMPLE_PRESSURE, sample, userdata);
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}
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}
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offset += parser->samplesize;
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}
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return DC_STATUS_SUCCESS;
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}
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