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#include <iostream>
#include <fstream>
#include <stdio.h>
#include <sys/types.h>
#include <dirent.h>
using namespace std;
#include "device.h"
#include "alsa.h"
#include "../parameters/parameters.h"
#include <string.h>
alsa::alsa(char *_name, char *path)
{
char devname[128];
end_active = 0;
start_active = 0;
end_inactive = 0;
start_inactive = 0;
strncpy(sysfs_path, path, sizeof(sysfs_path));
sprintf(devname, "alsa:%s", _name);
strncpy(name, devname, sizeof(name));
}
void alsa::start_measurement(void)
{
char filename[4096];
ifstream file;
sprintf(filename, "%s/power_off_acct", sysfs_path);
try {
file.open(filename, ios::in);
if (file) {
file >> start_inactive;
}
file.close();
sprintf(filename, "%s/power_on_acct", sysfs_path);
file.open(filename, ios::in);
if (file) {
file >> start_active;
}
file.close();
} catch (std::ios_base::failure c) {
cout << "Fail\n";
}
}
void alsa::end_measurement(void)
{
char filename[4096];
ifstream file;
double p;
sprintf(filename, "%s/power_off_acct", sysfs_path);
try {
file.open(filename, ios::in);
if (file) {
file >> end_inactive;
}
file.close();
sprintf(filename, "%s/power_on_acct", sysfs_path);
file.open(filename, ios::in);
if (file) {
file >> end_active;
}
file.close();
} catch (std::ios_base::failure c) {
}
p = (end_active - start_active) / (0.001 + end_active + end_inactive - start_active - start_inactive) * 100.0;
report_utilization(name, p);
}
double alsa::utilization(void)
{
double p;
p = (end_active - start_active) / (0.001 + end_active - start_active + end_inactive - start_inactive) * 100.0;
return p;
}
const char * alsa::device_name(void)
{
return name;
}
void create_all_alsa(void)
{
struct dirent *entry;
DIR *dir;
char filename[4096];
dir = opendir("/sys/class/sound/card0/");
if (!dir)
return;
while (1) {
class alsa *bl;
ofstream file;
entry = readdir(dir);
if (!entry)
break;
if (entry->d_name[0] == '.')
continue;
sprintf(filename, "/sys/class/sound/card0/%s/power_on_acct", entry->d_name);
if (access(filename, R_OK) != 0)
continue;
sprintf(filename, "/sys/class/sound/card0/%s", entry->d_name);
bl = new class alsa(entry->d_name, filename);
all_devices.push_back(bl);
register_parameter("alsa-codec-power");
}
closedir(dir);
}
double alsa::power_usage(struct result_bundle *result, struct parameter_bundle *bundle)
{
double power;
double factor;
double utilization;
static int index = 0;
power = 0;
if (!index)
index = get_param_index("alsa-codec-power");
factor = get_parameter_value(index, bundle);
utilization = get_result_value(name, result);
power += utilization * factor / 100.0;
return power;
}
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