diff options
Diffstat (limited to '3rdparty/SDL2/src/power/linux/SDL_syspower.c')
-rw-r--r-- | 3rdparty/SDL2/src/power/linux/SDL_syspower.c | 519 |
1 files changed, 0 insertions, 519 deletions
diff --git a/3rdparty/SDL2/src/power/linux/SDL_syspower.c b/3rdparty/SDL2/src/power/linux/SDL_syspower.c deleted file mode 100644 index 793e2666952..00000000000 --- a/3rdparty/SDL2/src/power/linux/SDL_syspower.c +++ /dev/null @@ -1,519 +0,0 @@ -/* - Simple DirectMedia Layer - Copyright (C) 1997-2016 Sam Lantinga <slouken@libsdl.org> - - This software is provided 'as-is', without any express or implied - warranty. In no event will the authors be held liable for any damages - arising from the use of this software. - - Permission is granted to anyone to use this software for any purpose, - including commercial applications, and to alter it and redistribute it - freely, subject to the following restrictions: - - 1. The origin of this software must not be misrepresented; you must not - claim that you wrote the original software. If you use this software - in a product, an acknowledgment in the product documentation would be - appreciated but is not required. - 2. Altered source versions must be plainly marked as such, and must not be - misrepresented as being the original software. - 3. This notice may not be removed or altered from any source distribution. -*/ -#include "../../SDL_internal.h" - -#ifndef SDL_POWER_DISABLED -#if SDL_POWER_LINUX - -#include <stdio.h> -#include <unistd.h> - -#include <sys/types.h> -#include <sys/stat.h> -#include <dirent.h> -#include <fcntl.h> - -#include "SDL_power.h" - -static const char *proc_apm_path = "/proc/apm"; -static const char *proc_acpi_battery_path = "/proc/acpi/battery"; -static const char *proc_acpi_ac_adapter_path = "/proc/acpi/ac_adapter"; -static const char *sys_class_power_supply_path = "/sys/class/power_supply"; - -static int -open_power_file(const char *base, const char *node, const char *key) -{ - const size_t pathlen = strlen(base) + strlen(node) + strlen(key) + 3; - char *path = (char *) alloca(pathlen); - if (path == NULL) { - return -1; /* oh well. */ - } - - snprintf(path, pathlen, "%s/%s/%s", base, node, key); - return open(path, O_RDONLY); -} - - -static SDL_bool -read_power_file(const char *base, const char *node, const char *key, - char *buf, size_t buflen) -{ - ssize_t br = 0; - const int fd = open_power_file(base, node, key); - if (fd == -1) { - return SDL_FALSE; - } - br = read(fd, buf, buflen-1); - close(fd); - if (br < 0) { - return SDL_FALSE; - } - buf[br] = '\0'; /* null-terminate the string. */ - return SDL_TRUE; -} - - -static SDL_bool -make_proc_acpi_key_val(char **_ptr, char **_key, char **_val) -{ - char *ptr = *_ptr; - - while (*ptr == ' ') { - ptr++; /* skip whitespace. */ - } - - if (*ptr == '\0') { - return SDL_FALSE; /* EOF. */ - } - - *_key = ptr; - - while ((*ptr != ':') && (*ptr != '\0')) { - ptr++; - } - - if (*ptr == '\0') { - return SDL_FALSE; /* (unexpected) EOF. */ - } - - *(ptr++) = '\0'; /* terminate the key. */ - - while ((*ptr == ' ') && (*ptr != '\0')) { - ptr++; /* skip whitespace. */ - } - - if (*ptr == '\0') { - return SDL_FALSE; /* (unexpected) EOF. */ - } - - *_val = ptr; - - while ((*ptr != '\n') && (*ptr != '\0')) { - ptr++; - } - - if (*ptr != '\0') { - *(ptr++) = '\0'; /* terminate the value. */ - } - - *_ptr = ptr; /* store for next time. */ - return SDL_TRUE; -} - -static void -check_proc_acpi_battery(const char * node, SDL_bool * have_battery, - SDL_bool * charging, int *seconds, int *percent) -{ - const char *base = proc_acpi_battery_path; - char info[1024]; - char state[1024]; - char *ptr = NULL; - char *key = NULL; - char *val = NULL; - SDL_bool charge = SDL_FALSE; - SDL_bool choose = SDL_FALSE; - int maximum = -1; - int remaining = -1; - int secs = -1; - int pct = -1; - - if (!read_power_file(base, node, "state", state, sizeof (state))) { - return; - } else if (!read_power_file(base, node, "info", info, sizeof (info))) { - return; - } - - ptr = &state[0]; - while (make_proc_acpi_key_val(&ptr, &key, &val)) { - if (strcmp(key, "present") == 0) { - if (strcmp(val, "yes") == 0) { - *have_battery = SDL_TRUE; - } - } else if (strcmp(key, "charging state") == 0) { - /* !!! FIXME: what exactly _does_ charging/discharging mean? */ - if (strcmp(val, "charging/discharging") == 0) { - charge = SDL_TRUE; - } else if (strcmp(val, "charging") == 0) { - charge = SDL_TRUE; - } - } else if (strcmp(key, "remaining capacity") == 0) { - char *endptr = NULL; - const int cvt = (int) strtol(val, &endptr, 10); - if (*endptr == ' ') { - remaining = cvt; - } - } - } - - ptr = &info[0]; - while (make_proc_acpi_key_val(&ptr, &key, &val)) { - if (strcmp(key, "design capacity") == 0) { - char *endptr = NULL; - const int cvt = (int) strtol(val, &endptr, 10); - if (*endptr == ' ') { - maximum = cvt; - } - } - } - - if ((maximum >= 0) && (remaining >= 0)) { - pct = (int) ((((float) remaining) / ((float) maximum)) * 100.0f); - if (pct < 0) { - pct = 0; - } else if (pct > 100) { - pct = 100; - } - } - - /* !!! FIXME: calculate (secs). */ - - /* - * We pick the battery that claims to have the most minutes left. - * (failing a report of minutes, we'll take the highest percent.) - */ - if ((secs < 0) && (*seconds < 0)) { - if ((pct < 0) && (*percent < 0)) { - choose = SDL_TRUE; /* at least we know there's a battery. */ - } - if (pct > *percent) { - choose = SDL_TRUE; - } - } else if (secs > *seconds) { - choose = SDL_TRUE; - } - - if (choose) { - *seconds = secs; - *percent = pct; - *charging = charge; - } -} - -static void -check_proc_acpi_ac_adapter(const char * node, SDL_bool * have_ac) -{ - const char *base = proc_acpi_ac_adapter_path; - char state[256]; - char *ptr = NULL; - char *key = NULL; - char *val = NULL; - - if (!read_power_file(base, node, "state", state, sizeof (state))) { - return; - } - - ptr = &state[0]; - while (make_proc_acpi_key_val(&ptr, &key, &val)) { - if (strcmp(key, "state") == 0) { - if (strcmp(val, "on-line") == 0) { - *have_ac = SDL_TRUE; - } - } - } -} - - -SDL_bool -SDL_GetPowerInfo_Linux_proc_acpi(SDL_PowerState * state, - int *seconds, int *percent) -{ - struct dirent *dent = NULL; - DIR *dirp = NULL; - SDL_bool have_battery = SDL_FALSE; - SDL_bool have_ac = SDL_FALSE; - SDL_bool charging = SDL_FALSE; - - *seconds = -1; - *percent = -1; - *state = SDL_POWERSTATE_UNKNOWN; - - dirp = opendir(proc_acpi_battery_path); - if (dirp == NULL) { - return SDL_FALSE; /* can't use this interface. */ - } else { - while ((dent = readdir(dirp)) != NULL) { - const char *node = dent->d_name; - check_proc_acpi_battery(node, &have_battery, &charging, - seconds, percent); - } - closedir(dirp); - } - - dirp = opendir(proc_acpi_ac_adapter_path); - if (dirp == NULL) { - return SDL_FALSE; /* can't use this interface. */ - } else { - while ((dent = readdir(dirp)) != NULL) { - const char *node = dent->d_name; - check_proc_acpi_ac_adapter(node, &have_ac); - } - closedir(dirp); - } - - if (!have_battery) { - *state = SDL_POWERSTATE_NO_BATTERY; - } else if (charging) { - *state = SDL_POWERSTATE_CHARGING; - } else if (have_ac) { - *state = SDL_POWERSTATE_CHARGED; - } else { - *state = SDL_POWERSTATE_ON_BATTERY; - } - - return SDL_TRUE; /* definitive answer. */ -} - - -static SDL_bool -next_string(char **_ptr, char **_str) -{ - char *ptr = *_ptr; - char *str = *_str; - - while (*ptr == ' ') { /* skip any spaces... */ - ptr++; - } - - if (*ptr == '\0') { - return SDL_FALSE; - } - - str = ptr; - while ((*ptr != ' ') && (*ptr != '\n') && (*ptr != '\0')) - ptr++; - - if (*ptr != '\0') - *(ptr++) = '\0'; - - *_str = str; - *_ptr = ptr; - return SDL_TRUE; -} - -static SDL_bool -int_string(char *str, int *val) -{ - char *endptr = NULL; - *val = (int) strtol(str, &endptr, 0); - return ((*str != '\0') && (*endptr == '\0')); -} - -/* http://lxr.linux.no/linux+v2.6.29/drivers/char/apm-emulation.c */ -SDL_bool -SDL_GetPowerInfo_Linux_proc_apm(SDL_PowerState * state, - int *seconds, int *percent) -{ - SDL_bool need_details = SDL_FALSE; - int ac_status = 0; - int battery_status = 0; - int battery_flag = 0; - int battery_percent = 0; - int battery_time = 0; - const int fd = open(proc_apm_path, O_RDONLY); - char buf[128]; - char *ptr = &buf[0]; - char *str = NULL; - ssize_t br; - - if (fd == -1) { - return SDL_FALSE; /* can't use this interface. */ - } - - br = read(fd, buf, sizeof (buf) - 1); - close(fd); - - if (br < 0) { - return SDL_FALSE; - } - - buf[br] = '\0'; /* null-terminate the string. */ - if (!next_string(&ptr, &str)) { /* driver version */ - return SDL_FALSE; - } - if (!next_string(&ptr, &str)) { /* BIOS version */ - return SDL_FALSE; - } - if (!next_string(&ptr, &str)) { /* APM flags */ - return SDL_FALSE; - } - - if (!next_string(&ptr, &str)) { /* AC line status */ - return SDL_FALSE; - } else if (!int_string(str, &ac_status)) { - return SDL_FALSE; - } - - if (!next_string(&ptr, &str)) { /* battery status */ - return SDL_FALSE; - } else if (!int_string(str, &battery_status)) { - return SDL_FALSE; - } - if (!next_string(&ptr, &str)) { /* battery flag */ - return SDL_FALSE; - } else if (!int_string(str, &battery_flag)) { - return SDL_FALSE; - } - if (!next_string(&ptr, &str)) { /* remaining battery life percent */ - return SDL_FALSE; - } - if (str[strlen(str) - 1] == '%') { - str[strlen(str) - 1] = '\0'; - } - if (!int_string(str, &battery_percent)) { - return SDL_FALSE; - } - - if (!next_string(&ptr, &str)) { /* remaining battery life time */ - return SDL_FALSE; - } else if (!int_string(str, &battery_time)) { - return SDL_FALSE; - } - - if (!next_string(&ptr, &str)) { /* remaining battery life time units */ - return SDL_FALSE; - } else if (strcmp(str, "min") == 0) { - battery_time *= 60; - } - - if (battery_flag == 0xFF) { /* unknown state */ - *state = SDL_POWERSTATE_UNKNOWN; - } else if (battery_flag & (1 << 7)) { /* no battery */ - *state = SDL_POWERSTATE_NO_BATTERY; - } else if (battery_flag & (1 << 3)) { /* charging */ - *state = SDL_POWERSTATE_CHARGING; - need_details = SDL_TRUE; - } else if (ac_status == 1) { - *state = SDL_POWERSTATE_CHARGED; /* on AC, not charging. */ - need_details = SDL_TRUE; - } else { - *state = SDL_POWERSTATE_ON_BATTERY; - need_details = SDL_TRUE; - } - - *percent = -1; - *seconds = -1; - if (need_details) { - const int pct = battery_percent; - const int secs = battery_time; - - if (pct >= 0) { /* -1 == unknown */ - *percent = (pct > 100) ? 100 : pct; /* clamp between 0%, 100% */ - } - if (secs >= 0) { /* -1 == unknown */ - *seconds = secs; - } - } - - return SDL_TRUE; -} - -/* !!! FIXME: implement d-bus queries to org.freedesktop.UPower. */ - -SDL_bool -SDL_GetPowerInfo_Linux_sys_class_power_supply(SDL_PowerState *state, int *seconds, int *percent) -{ - const char *base = sys_class_power_supply_path; - struct dirent *dent; - DIR *dirp; - - dirp = opendir(base); - if (!dirp) { - return SDL_FALSE; - } - - *state = SDL_POWERSTATE_NO_BATTERY; /* assume we're just plugged in. */ - *seconds = -1; - *percent = -1; - - while ((dent = readdir(dirp)) != NULL) { - const char *name = dent->d_name; - SDL_bool choose = SDL_FALSE; - char str[64]; - SDL_PowerState st; - int secs; - int pct; - - if ((SDL_strcmp(name, ".") == 0) || (SDL_strcmp(name, "..") == 0)) { - continue; /* skip these, of course. */ - } else if (!read_power_file(base, name, "type", str, sizeof (str))) { - continue; /* Don't know _what_ we're looking at. Give up on it. */ - } else if (SDL_strcmp(str, "Battery\n") != 0) { - continue; /* we don't care about UPS and such. */ - } - - /* some drivers don't offer this, so if it's not explicitly reported assume it's present. */ - if (read_power_file(base, name, "present", str, sizeof (str)) && (SDL_strcmp(str, "0\n") == 0)) { - st = SDL_POWERSTATE_NO_BATTERY; - } else if (!read_power_file(base, name, "status", str, sizeof (str))) { - st = SDL_POWERSTATE_UNKNOWN; /* uh oh */ - } else if (SDL_strcmp(str, "Charging\n") == 0) { - st = SDL_POWERSTATE_CHARGING; - } else if (SDL_strcmp(str, "Discharging\n") == 0) { - st = SDL_POWERSTATE_ON_BATTERY; - } else if ((SDL_strcmp(str, "Full\n") == 0) || (SDL_strcmp(str, "Not charging\n") == 0)) { - st = SDL_POWERSTATE_CHARGED; - } else { - st = SDL_POWERSTATE_UNKNOWN; /* uh oh */ - } - - if (!read_power_file(base, name, "capacity", str, sizeof (str))) { - pct = -1; - } else { - pct = SDL_atoi(str); - pct = (pct > 100) ? 100 : pct; /* clamp between 0%, 100% */ - } - - if (!read_power_file(base, name, "time_to_empty_now", str, sizeof (str))) { - secs = -1; - } else { - secs = SDL_atoi(str); - secs = (secs <= 0) ? -1 : secs; /* 0 == unknown */ - } - - /* - * We pick the battery that claims to have the most minutes left. - * (failing a report of minutes, we'll take the highest percent.) - */ - if ((secs < 0) && (*seconds < 0)) { - if ((pct < 0) && (*percent < 0)) { - choose = SDL_TRUE; /* at least we know there's a battery. */ - } else if (pct > *percent) { - choose = SDL_TRUE; - } - } else if (secs > *seconds) { - choose = SDL_TRUE; - } - - if (choose) { - *seconds = secs; - *percent = pct; - *state = st; - } - } - - closedir(dirp); - return SDL_TRUE; /* don't look any further. */ -} - -#endif /* SDL_POWER_LINUX */ -#endif /* SDL_POWER_DISABLED */ - -/* vi: set ts=4 sw=4 expandtab: */ |