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Use a struct for the gasmix and tank data

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This small refactoring is mainly a preparation to support multiple
tanks. There is no functional change.
This commit is contained in:
Jef Driesen 2019-08-22 20:05:02 +02:00
parent d5aa15c1c5
commit 1cd285a4d8
1 changed files with 49 additions and 34 deletions
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83
src/divesystem_idive_parser.c
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@ -39,6 +39,7 @@
#define SZ_SAMPLE_IX3M_APOS4 0x40
#define NGASMIXES 8
#define NTANKS 1
#define EPOCH 1199145600 /* 2008-01-01 00:00:00 */
@ -51,6 +52,16 @@
typedef struct divesystem_idive_parser_t divesystem_idive_parser_t;
typedef struct divesystem_idive_gasmix_t {
unsigned int oxygen;
unsigned int helium;
} divesystem_idive_gasmix_t;
typedef struct divesystem_idive_tank_t {
unsigned int beginpressure;
unsigned int endpressure;
} divesystem_idive_tank_t;
struct divesystem_idive_parser_t {
dc_parser_t base;
unsigned int model;
@ -61,10 +72,9 @@ struct divesystem_idive_parser_t {
unsigned int divetime;
unsigned int maxdepth;
unsigned int ngasmixes;
unsigned int oxygen[NGASMIXES];
unsigned int helium[NGASMIXES];
unsigned int beginpressure;
unsigned int endpressure;
unsigned int ntanks;
divesystem_idive_gasmix_t gasmix[NGASMIXES];
divesystem_idive_tank_t tank[NTANKS];
};
static dc_status_t divesystem_idive_parser_set_data (dc_parser_t *abstract, const unsigned char *data, unsigned int size);
@ -110,12 +120,15 @@ divesystem_idive_parser_create (dc_parser_t **out, dc_context_t *context, unsign
parser->divetime = 0;
parser->maxdepth = 0;
parser->ngasmixes = 0;
parser->ntanks = 0;
for (unsigned int i = 0; i < NGASMIXES; ++i) {
parser->oxygen[i] = 0;
parser->helium[i] = 0;
parser->gasmix[i].oxygen = 0;
parser->gasmix[i].helium = 0;
}
for (unsigned int i = 0; i < NTANKS; ++i) {
parser->tank[i].beginpressure = 0;
parser->tank[i].endpressure = 0;
}
parser->beginpressure = 0;
parser->endpressure = 0;
*out = (dc_parser_t*) parser;
@ -134,12 +147,15 @@ divesystem_idive_parser_set_data (dc_parser_t *abstract, const unsigned char *da
parser->divetime = 0;
parser->maxdepth = 0;
parser->ngasmixes = 0;
parser->ntanks = 0;
for (unsigned int i = 0; i < NGASMIXES; ++i) {
parser->oxygen[i] = 0;
parser->helium[i] = 0;
parser->gasmix[i].oxygen = 0;
parser->gasmix[i].helium = 0;
}
for (unsigned int i = 0; i < NTANKS; ++i) {
parser->tank[i].beginpressure = 0;
parser->tank[i].endpressure = 0;
}
parser->beginpressure = 0;
parser->endpressure = 0;
return DC_STATUS_SUCCESS;
}
@ -276,21 +292,19 @@ divesystem_idive_parser_get_field (dc_parser_t *abstract, dc_field_type_t type,
*((unsigned int *) value) = parser->ngasmixes;
break;
case DC_FIELD_GASMIX:
gasmix->helium = parser->helium[flags] / 100.0;
gasmix->oxygen = parser->oxygen[flags] / 100.0;
gasmix->helium = parser->gasmix[flags].helium / 100.0;
gasmix->oxygen = parser->gasmix[flags].oxygen / 100.0;
gasmix->nitrogen = 1.0 - gasmix->oxygen - gasmix->helium;
break;
case DC_FIELD_TANK_COUNT:
if (parser->beginpressure == 0 && parser->endpressure == 0)
return DC_STATUS_UNSUPPORTED;
*((unsigned int *) value) = 1;
*((unsigned int *) value) = parser->ntanks;
break;
case DC_FIELD_TANK:
tank->type = DC_TANKVOLUME_NONE;
tank->volume = 0.0;
tank->workpressure = 0.0;
tank->beginpressure = parser->beginpressure;
tank->endpressure = parser->endpressure;
tank->beginpressure = parser->tank[flags].beginpressure;
tank->endpressure = parser->tank[flags].endpressure;
tank->gasmix = DC_GASMIX_UNKNOWN;
break;
case DC_FIELD_ATMOSPHERIC:
@ -347,14 +361,13 @@ divesystem_idive_parser_samples_foreach (dc_parser_t *abstract, dc_sample_callba
unsigned int time = 0;
unsigned int maxdepth = 0;
unsigned int ngasmixes = 0;
unsigned int oxygen[NGASMIXES];
unsigned int helium[NGASMIXES];
unsigned int ntanks = 0;
divesystem_idive_gasmix_t gasmix[NGASMIXES] = {0};
divesystem_idive_tank_t tank[NTANKS] = {0};
unsigned int o2_previous = 0xFFFFFFFF;
unsigned int he_previous = 0xFFFFFFFF;
unsigned int mode_previous = INVALID;
unsigned int divemode = INVALID;
unsigned int beginpressure = 0;
unsigned int endpressure = 0;
unsigned int firmware = 0;
unsigned int apos4 = 0;
@ -431,7 +444,7 @@ divesystem_idive_parser_samples_foreach (dc_parser_t *abstract, dc_sample_callba
// Find the gasmix in the list.
unsigned int i = 0;
while (i < ngasmixes) {
if (o2 == oxygen[i] && he == helium[i])
if (o2 == gasmix[i].oxygen && he == gasmix[i].helium)
break;
i++;
}
@ -442,8 +455,8 @@ divesystem_idive_parser_samples_foreach (dc_parser_t *abstract, dc_sample_callba
ERROR (abstract->context, "Maximum number of gas mixes reached.");
return DC_STATUS_DATAFORMAT;
}
oxygen[i] = o2;
helium[i] = he;
gasmix[i].oxygen = o2;
gasmix[i].helium = he;
ngasmixes = i + 1;
}
@ -490,14 +503,15 @@ divesystem_idive_parser_samples_foreach (dc_parser_t *abstract, dc_sample_callba
// Tank Pressure
if (samplesize == SZ_SAMPLE_IX3M_APOS4) {
unsigned int pressure = data[offset + 49];
if (beginpressure == 0 && pressure != 0) {
beginpressure = pressure;
if (tank[0].beginpressure == 0 && pressure != 0) {
tank[0].beginpressure = pressure;
ntanks = 1;
}
if (beginpressure) {
if (tank[0].beginpressure) {
sample.pressure.tank = 0;
sample.pressure.value = pressure;
if (callback) callback (DC_SAMPLE_PRESSURE, sample, userdata);
endpressure = pressure;
tank[0].endpressure = pressure;
}
}
@ -505,13 +519,14 @@ divesystem_idive_parser_samples_foreach (dc_parser_t *abstract, dc_sample_callba
}
// Cache the data for later use.
parser->beginpressure = beginpressure;
parser->endpressure = endpressure;
for (unsigned int i = 0; i < ntanks; ++i) {
parser->tank[i] = tank[i];
}
for (unsigned int i = 0; i < ngasmixes; ++i) {
parser->helium[i] = helium[i];
parser->oxygen[i] = oxygen[i];
parser->gasmix[i] = gasmix[i];
}
parser->ngasmixes = ngasmixes;
parser->ntanks = ntanks;
parser->maxdepth = maxdepth;
parser->divetime = time;
parser->divemode = divemode;