diff options
Diffstat (limited to 'src/print_battery_info.c')
| -rw-r--r-- | src/print_battery_info.c | 83 |
1 files changed, 33 insertions, 50 deletions
diff --git a/src/print_battery_info.c b/src/print_battery_info.c index d92d9db..c7948d0 100644 --- a/src/print_battery_info.c +++ b/src/print_battery_info.c @@ -39,23 +39,7 @@ struct battery_info { charging_status_t status; }; -/* - * Estimate the number of seconds remaining in state 'status'. - * - * Assumes a constant (dis)charge rate. - */ -#if defined(LINUX) || defined(__NetBSD__) -static int seconds_remaining_from_rate(charging_status_t status, float full_design, float remaining, float present_rate) { - if (status == CS_CHARGING) - return 3600.0 * (full_design - remaining) / present_rate; - else if (status == CS_DISCHARGING) - return 3600.0 * remaining / present_rate; - else - return 0; -} -#endif - -static bool slurp_battery_info(struct battery_info *batt_info, yajl_gen json_gen, char *buffer, int number, const char *path, const char *format_down, bool last_full_capacity) { +static bool slurp_battery_info(struct battery_info *batt_info, yajl_gen json_gen, char *buffer, int number, const char *path, const char *format_down) { char *outwalk = buffer; #if defined(LINUX) @@ -122,27 +106,6 @@ static bool slurp_battery_info(struct battery_info *batt_info, yajl_gen json_gen batt_info->remaining = (((float)voltage / 1000.0) * ((float)batt_info->remaining / 1000.0)); batt_info->full_design = (((float)voltage / 1000.0) * ((float)batt_info->full_design / 1000.0)); } - - int full = (last_full_capacity ? batt_info->full_last : batt_info->full_design); - - if ((full == -1) || (batt_info->remaining == -1)) { - OUTPUT_FULL_TEXT(format_down); - return false; - } - - batt_info->percentage_remaining = (((float)batt_info->remaining / (float)full) * 100); - /* Some batteries report POWER_SUPPLY_CHARGE_NOW=<full_design> when fully - * charged, even though that’s plainly wrong. For people who chose to see - * the percentage calculated based on the last full capacity, we clamp the - * value to 100%, as that makes more sense. - * See http://bugs.debian.org/785398 */ - if (last_full_capacity && batt_info->percentage_remaining > 100) { - batt_info->percentage_remaining = 100; - } - - if (batt_info->present_rate > 0 && batt_info->status != CS_FULL) { - batt_info->seconds_remaining = seconds_remaining_from_rate(batt_info->status, full, batt_info->remaining, batt_info->present_rate); - } #elif defined(__FreeBSD__) || defined(__FreeBSD_kernel__) || defined(__DragonFly__) int state; int sysctl_rslt; @@ -346,19 +309,8 @@ static bool slurp_battery_info(struct battery_info *batt_info, yajl_gen json_gen batt_info->full_design = (((float)voltage / 1000.0) * ((float)batt_info->full_design / 1000.0)); } - int full = (last_full_capacity ? batt_info->full_last : batt_info->full_design); - - batt_info->percentage_remaining = - (((float)batt_info->remaining / (float)full) * 100); - if (is_full) batt_info->status = CS_FULL; - - /* - * The envsys(4) ACPI routines do not appear to provide a 'time - * remaining' figure, so we must deduce it. - */ - batt_info->seconds_remaining = seconds_remaining_from_rate(batt_info->status, full, batt_info->remaining, batt_info->present_rate); #endif return true; @@ -368,6 +320,8 @@ void print_battery_info(yajl_gen json_gen, char *buffer, int number, const char const char *walk; char *outwalk = buffer; struct battery_info batt_info = { + .full_design = -1, + .full_last = -1, .present_rate = -1, .seconds_remaining = -1, .percentage_remaining = -1, @@ -384,8 +338,37 @@ void print_battery_info(yajl_gen json_gen, char *buffer, int number, const char hide_seconds = true; #endif - if (!slurp_battery_info(&batt_info, json_gen, buffer, number, path, format_down, last_full_capacity)) + if (!slurp_battery_info(&batt_info, json_gen, buffer, number, path, format_down)) + return; + + int full = (last_full_capacity ? batt_info.full_last : batt_info.full_design); + if (full < 0 && batt_info.percentage_remaining < 0) { + /* We have no physical measurements and no estimates. Nothing + * much we can report, then. */ + OUTPUT_FULL_TEXT(format_down); return; + } + + if (batt_info.percentage_remaining < 0) { + batt_info.percentage_remaining = (((float)batt_info.remaining / (float)full) * 100); + /* Some batteries report POWER_SUPPLY_CHARGE_NOW=<full_design> when fully + * charged, even though that’s plainly wrong. For people who chose to see + * the percentage calculated based on the last full capacity, we clamp the + * value to 100%, as that makes more sense. + * See http://bugs.debian.org/785398 */ + if (last_full_capacity && batt_info.percentage_remaining > 100) { + batt_info.percentage_remaining = 100; + } + } + + if (batt_info.seconds_remaining < 0 && batt_info.present_rate > 0 && batt_info.status != CS_FULL) { + if (batt_info.status == CS_CHARGING) + batt_info.seconds_remaining = 3600.0 * (full - batt_info.remaining) / batt_info.present_rate; + else if (batt_info.status == CS_DISCHARGING) + batt_info.seconds_remaining = 3600.0 * batt_info.remaining / batt_info.present_rate; + else + batt_info.seconds_remaining = 0; + } if (batt_info.status == CS_DISCHARGING && low_threshold > 0) { if (batt_info.percentage_remaining >= 0 && strcasecmp(threshold_type, "percentage") == 0 && batt_info.percentage_remaining < low_threshold) { |