split source per command and added command 'names'

- sources are splitted to separate files
- added initial code for 'names' command

1 files changed, 200 insertions, 0 deletions

diff --git a/alsactl/power.c b/alsactl/power.c
new file mode 100644
index 0000000..ee6472c
--- /dev/null
+++ b/alsactl/power.c
@@ -0,0 +1,200 @@
+/*
+ *  Advanced Linux Sound Architecture Control Program
+ *  Copyright (c) Jaroslav Kysela <perex@suse.cz>
+ *
+ *
+ *   This program 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; either version 2 of the License, or
+ *   (at your option) any later version.
+ *
+ *   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; if not, write to the Free Software
+ *   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
+ *
+ */
+
+#include "aconfig.h"
+#include "version.h"
+#include <getopt.h>
+#include <stdarg.h>
+#include <stdio.h>
+#include <assert.h>
+#include <errno.h>
+#include <alsa/asoundlib.h>
+#include "alsactl.h"
+
+
+static int get_int_state(const char *str)
+{
+	if (!strcasecmp(str, "on"))
+		return SND_CTL_POWER_D0;
+	if (!strcasecmp(str, "off"))
+		return SND_CTL_POWER_D3hot;
+	if (*str == 'D' || *str == 'd') {
+		str++;
+		if (!strcmp(str, "0"))
+			return SND_CTL_POWER_D0;
+		if (!strcmp(str, "1"))
+			return SND_CTL_POWER_D1;
+		if (!strcmp(str, "2"))
+			return SND_CTL_POWER_D2;
+		if (!strcmp(str, "3"))
+			return SND_CTL_POWER_D3;
+		if (!strcmp(str, "3hot"))
+			return SND_CTL_POWER_D3hot;
+		if (!strcmp(str, "3cold"))
+			return SND_CTL_POWER_D3cold;
+	}
+	return -1;
+}
+
+static const char *get_str_state(int power_state)
+{
+	static char str[16];
+
+	switch (power_state) {
+	case SND_CTL_POWER_D0:
+		return "D0";
+	case SND_CTL_POWER_D1:
+		return "D1";
+	case SND_CTL_POWER_D2:
+		return "D2";
+	// return SND_CTL_POWER_D3;	/* it's same as D3hot */
+	case SND_CTL_POWER_D3hot:
+		return "D3hot";
+	case SND_CTL_POWER_D3cold:
+		return "D3cold";
+	default:
+		sprintf(str, "???0x%x", power_state);
+		return str;
+	}
+}
+
+static int show_power(int cardno)
+{
+	snd_ctl_t *handle;
+	char name[16];
+	unsigned int power_state;
+	int err;
+
+	sprintf(name, "hw:%d", cardno);
+	err = snd_ctl_open(&handle, name, 0);
+	if (err < 0) {
+		error("snd_ctl_open error: %s", snd_strerror(err));
+		return err;
+	}
+	err = snd_ctl_get_power_state(handle, &power_state);
+	if (err < 0) {
+		error("snd_ctl_get_power_state error: %s", snd_strerror(err));
+		snd_ctl_close(handle);
+		return err;
+	}
+	snd_ctl_close(handle);
+	printf("Power state for card #%d is %s\n", cardno, get_str_state(power_state));
+	return 0;
+}
+
+static int set_power(int cardno, unsigned int power_state)
+{
+	snd_ctl_t *handle;
+	char name[16];
+	int err;
+
+	sprintf(name, "hw:%d", cardno);
+	err = snd_ctl_open(&handle, name, 0);
+	if (err < 0) {
+		error("snd_ctl_open error: %s", snd_strerror(err));
+		return err;
+	}
+	err = snd_ctl_set_power_state(handle, power_state);
+	if (err < 0) {
+		error("snd_ctl_set_power_state error: %s", snd_strerror(err));
+		snd_ctl_close(handle);
+		return err;
+	}
+	err = snd_ctl_get_power_state(handle, &power_state);
+	if (err < 0) {
+		error("snd_ctl_get_power_state error: %s", snd_strerror(err));
+		snd_ctl_close(handle);
+		return err;
+	}
+	snd_ctl_close(handle);
+	printf("Power state for card #%d is %s\n", cardno, get_str_state(power_state));
+	return 0;
+}
+
+
+int power(const char *argv[], int argc)
+{
+	int power_state, err;
+	
+	if (argc == 0) {		/* show status only */
+		int card, first = 1;
+
+		card = -1;
+		/* find each installed soundcards */
+		while (1) {
+			if (snd_card_next(&card) < 0)
+				break;
+			if (card < 0) {
+				if (first) {
+					error("No soundcards found...");
+					return -ENODEV;
+				}
+				break;
+			}
+			first = 0;
+			if ((err = show_power(card)) < 0)
+				return err;
+		}
+		return 0;
+	}
+	power_state = get_int_state(argv[0]);
+	if (power_state >= 0) {
+		int card, first = 1;
+
+		card = -1;
+		/* find each installed soundcards */
+		while (1) {
+			if (snd_card_next(&card) < 0)
+				break;
+			if (card < 0) {
+				if (first) {
+					error("No soundcards found...");
+					return -ENODEV;
+				}
+				break;
+			}
+			first = 0;
+			if ((err = set_power(card, power_state)))
+				return err;
+		}
+	} else {
+		int cardno;
+
+		cardno = snd_card_get_index(argv[0]);
+		if (cardno < 0) {
+			error("Cannot find soundcard '%s'...", argv[0]);
+			return -ENODEV;
+		}
+		if (argc > 1) {
+			power_state = get_int_state(argv[1]);
+			if (power_state < 0) {
+				error("Invalid power state '%s'...", argv[1]);
+				return -EINVAL;
+			}
+			if ((err = set_power(cardno, power_state)) < 0)
+				return err;
+		} else {
+			if ((err = show_power(cardno)) < 0)
+				return err;
+		}
+	}
+	return 0;
+}