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/*
* Copyright 2010, Intel Corporation
*
* This file is part of PowerTOP
*
* This program file is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License as published by the
* Free Software Foundation; version 2 of the License.
*
* This program is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program in a file named COPYING; if not, write to the
* Free Software Foundation, Inc,
* 51 Franklin Street, Fifth Floor,
* Boston, MA 02110-1301 USA
* or just google for it.
*
* Authors:
* Arjan van de Ven <arjan@linux.intel.com>
*/
#include <iostream>
#include <fstream>
#include <stdio.h>
#include <sys/types.h>
#include <unistd.h>
using namespace std;
#include "device.h"
#include "alsa.h"
#include "../parameters/parameters.h"
#include "../devlist.h"
#include <string.h>
#include <unistd.h>
alsa::alsa(const char *_name, const char *path): device()
{
ifstream file;
char devname[4096];
char model[4096];
char vendor[4096];
end_active = 0;
start_active = 0;
end_inactive = 0;
start_inactive = 0;
pt_strcpy(sysfs_path, path);
snprintf(devname, sizeof(devname), "alsa:%s", _name);
snprintf(humanname, sizeof(humanname), "alsa:%s", _name);
pt_strcpy(name, devname);
rindex = get_result_index(name);
guilty[0] = 0;
model[0] = 0;
vendor[0] = 0;
snprintf(devname, sizeof(devname), "%s/modelname", path);
file.open(devname);
if (file) {
file.getline(model, sizeof(model));
file.close();
}
snprintf(devname, sizeof(devname), "%s/vendor_name", path);
file.open(devname);
if (file) {
file.getline(vendor, sizeof(vendor));
file.close();
}
if (strlen(model) && strlen(vendor))
snprintf(humanname, sizeof(humanname), _("Audio codec %s: %s (%s)"), name, model, vendor);
else if (strlen(model))
snprintf(humanname, sizeof(humanname), _("Audio codec %s: %s"), _name, model);
else if (strlen(vendor))
snprintf(humanname, sizeof(humanname), _("Audio codec %s: %s"), _name, vendor);
}
void alsa::start_measurement(void)
{
char filename[PATH_MAX];
ifstream file;
snprintf(filename, sizeof(filename), "%s/power_off_acct", sysfs_path);
try {
file.open(filename, ios::in);
if (file) {
file >> start_inactive;
}
file.close();
snprintf(filename, sizeof(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) {
fprintf(stderr, "%s\n", c.what());
}
}
void alsa::end_measurement(void)
{
char filename[PATH_MAX];
ifstream file;
double p;
snprintf(filename, sizeof(filename), "%s/power_off_acct", sysfs_path);
try {
file.open(filename, ios::in);
if (file) {
file >> end_inactive;
}
file.close();
snprintf(filename, sizeof(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) {
fprintf(stderr, "%s\n", c.what());
}
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;
}
static void create_all_alsa_callback(const char *d_name)
{
char filename[PATH_MAX];
class alsa *bl;
if (strncmp(d_name, "hwC", 3) != 0)
return;
snprintf(filename, sizeof(filename), "/sys/class/sound/%s/power_on_acct", d_name);
if (access(filename, R_OK) != 0)
return;
snprintf(filename, sizeof(filename), "/sys/class/sound/%s", d_name);
bl = new class alsa(d_name, filename);
all_devices.push_back(bl);
register_parameter("alsa-codec-power", 0.5);
}
void create_all_alsa(void)
{
process_directory("/sys/class/sound/", create_all_alsa_callback);
}
double alsa::power_usage(struct result_bundle *result, struct parameter_bundle *bundle)
{
double power;
double factor;
double util;
static int index = 0;
power = 0;
if (!index)
index = get_param_index("alsa-codec-power");
factor = get_parameter_value(index, bundle);
util = get_result_value(rindex, result);
power += util * factor / 100.0;
return power;
}
void alsa::register_power_with_devlist(struct result_bundle *results, struct parameter_bundle *bundle)
{
register_devpower(&name[7], power_usage(results, bundle), this);
}
const char * alsa::human_name(void)
{
pt_strcpy(temp_buf, humanname);
if (strlen(guilty) > 0)
snprintf(temp_buf, sizeof(temp_buf), "%s (%s)", humanname, guilty);
return temp_buf;
}
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