diff options
Diffstat (limited to 'src/devices/alsa.cpp')
| -rw-r--r-- | src/devices/alsa.cpp | 207 |
1 files changed, 207 insertions, 0 deletions
diff --git a/src/devices/alsa.cpp b/src/devices/alsa.cpp new file mode 100644 index 0000000..7e22975 --- /dev/null +++ b/src/devices/alsa.cpp @@ -0,0 +1,207 @@ +/* + * 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; +} |