X-Git-Url: https://vcs.maemo.org/git/?a=blobdiff_plain;f=src%2Fmixer.c;h=109ce9b5b9fb48de19cc91b7f7a2b00784a2a9b6;hb=6526b47b2c63c9f46b63d3a5e72cbe71b04d60ac;hp=d5950dec3fbb82d000255ad6da5ffcc6c6d2801c;hpb=0ab1d8b96ad5925c497855c4e09fcde1dc24ef74;p=monky

diff --git a/src/mixer.c b/src/mixer.c
index d5950de..109ce9b 100644
--- a/src/mixer.c
+++ b/src/mixer.c
@@ -1,20 +1,46 @@
-/*
+/* -*- mode: c; c-basic-offset: 4; tab-width: 4; indent-tabs-mode: t -*-
+ * vim: ts=4 sw=4 noet ai cindent syntax=c
+ *
  * Conky, a system monitor, based on torsmo
  *
- * This program is licensed under BSD license, read COPYING
+ * Any original torsmo code is licensed under the BSD license
+ *
+ * All code written since the fork of torsmo is licensed under the GPL
+ *
+ * Please see COPYING for details
+ *
+ * Copyright (c) 2004, Hannu Saransaari and Lauri Hakkarainen
+ * Copyright (c) 2005-2010 Brenden Matthews, Philip Kovacs, et. al.
+ *	(see AUTHORS)
+ * All rights reserved.
+ *
+ * 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 3 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, see <http://www.gnu.org/licenses/>.
  *
- *  $Id$
  */
 
+#include "conky.h"
+#include "logging.h"
+#include "specials.h"
+#include "text_object.h"
 #include <sys/ioctl.h>
-
 #include <errno.h>
 #include <fcntl.h>
-#include <string.h>
-#include <stdlib.h>
+#include <ctype.h>
 
-#include "conky.h"
 
+#ifdef MIXER_IS_ALSA
+#include <alsa/asoundlib.h>
+#else
 #ifdef HAVE_LINUX_SOUNDCARD_H
 #include <linux/soundcard.h>
 #else
@@ -22,27 +48,183 @@
 #include <soundcard.h>
 #else
 #include <sys/soundcard.h>
-#endif				/* __OpenBSD__ */
-#endif				/* HAVE_LINUX_SOUNDCARD_H */
+#endif /* __OpenBSD__ */
+#endif /* HAVE_LINUX_SOUNDCARD_H */
+#endif /* MIXER_IS_ALSA */
 
 #define MIXER_DEV "/dev/mixer"
 
+#ifdef MIXER_IS_ALSA
+#define MAX_MIXERS 8
+struct mixer_control {
+	char name[64];
+	snd_mixer_t *mixer;
+	snd_mixer_selem_id_t *sid;
+	snd_mixer_elem_t *elem;
+	long vol_min, vol_max;
+};
+
+static struct mixer_control mixer_data[MAX_MIXERS];
+int num_mixers = 0;
+static char soundcard[64] = "default";
+#else
 static int mixer_fd;
 static const char *devs[] = SOUND_DEVICE_NAMES;
+#endif
+
+#ifdef MIXER_IS_ALSA
+static int parse_simple_id(const char *str, snd_mixer_selem_id_t *sid)
+{
+	int c, size;
+	char buf[128];
+	char *ptr = buf;
+
+	while (*str == ' ' || *str == '\t')
+		str++;
+	if (!(*str))
+		return -EINVAL;
+	size = 1;	/* for '\0' */
+	if (*str != '"' && *str != '\'') {
+		while (*str && *str != ',') {
+			if (size < (int)sizeof(buf)) {
+				*ptr++ = *str;
+				size++;
+			}
+			str++;
+		}
+	} else {
+		c = *str++;
+		while (*str && *str != c) {
+			if (size < (int)sizeof(buf)) {
+				*ptr++ = *str;
+				size++;
+			}
+			str++;
+		}
+		if (*str == c)
+			str++;
+	}
+	if (*str == '\0') {
+		snd_mixer_selem_id_set_index(sid, 0);
+		*ptr = 0;
+		goto _set;
+	}
+	if (*str != ',')
+		return -EINVAL;
+	*ptr = 0;	/* terminate the string */
+	str++;
+	if (!isdigit(*str))
+		return -EINVAL;
+	snd_mixer_selem_id_set_index(sid, atoi(str));
+       _set:
+	snd_mixer_selem_id_set_name(sid, buf);
+	return 0;
+}
+
+int mixer_init (const char *name)
+{
+	/* from amixer.c, replaced -EINVAL with -1 */
+	int i, err;
+	if (!name)
+		name = "Master";
+
+	for (i = 0; i < num_mixers; i++) {
+		if (!strcasecmp (mixer_data[i].name, name)) {
+			return i;
+		}
+	}
+	if (i == MAX_MIXERS) {
+		fprintf (stderr, "max mixers (%d) reached\n", MAX_MIXERS);
+		return -1;
+	};
+
+	num_mixers++;
+#define data mixer_data[i]
+
+	strncpy (mixer_data[i].name, name, 63);
+	mixer_data[i].name[63] = '\0';
+	snd_mixer_selem_id_alloca (&data.sid);
+	data.mixer = NULL;
+	if (parse_simple_id (name, data.sid) < 0) {
+		fprintf (stderr, "Wrong mixer identifier: %s\n", name);
+		return -1;
+	}
+	if ((err = snd_mixer_open (&data.mixer, 0)) < 0) {
+		fprintf (stderr, "snd_mixer_open: %s\n", snd_strerror (err));
+		return -1;
+	}
+	if ((err = snd_mixer_attach (data.mixer, soundcard)) < 0) {
+		fprintf (stderr, "snd_mixer_attach: %s\n", snd_strerror (err));
+		return -1;
+	}
+	if ((err = snd_mixer_selem_register (data.mixer, NULL, NULL)) < 0) {
+		fprintf (stderr, "snd_mixer_selem_register: %s\n",
+			 snd_strerror (err));
+		return -1;
+	}
+	if ((err = snd_mixer_load (data.mixer)) < 0) {
+		fprintf (stderr, "snd_mixer_load: %s\n", snd_strerror (err));
+		return -1;
+	}
+	if (!(data.elem = snd_mixer_find_selem (data.mixer, data.sid))) {
+		fprintf (stderr, "snd_mixer_find_selem (\"%s\", %i)\n",
+			 snd_mixer_selem_id_get_name (data.sid),
+			 snd_mixer_selem_id_get_index (data.sid));
+		return -1;
+	}
+	snd_mixer_selem_get_playback_volume_range(data.elem, &data.vol_min, &data.vol_max);
+	return i;
+}
+static int mixer_get_avg (int i)
+{
+  long val;
 
+  snd_mixer_handle_events (data.mixer);
+  snd_mixer_selem_get_playback_volume (data.elem, 0, &val);
+  return (int) val;
+}
+static int mixer_get_left (int i)
+{
+  /* stub */
+  return mixer_get_avg (i);
+}
+static int mixer_get_right (int i)
+{
+  /* stub */
+  return mixer_get_avg (i);
+}
+int mixer_to_255(int i, int x)
+{
+  return (x-data.vol_min)*255/(data.vol_max-data.vol_min);
+}
+int mixer_is_mute(int i)
+{
+	snd_mixer_handle_events (data.mixer);
+	if (snd_mixer_selem_has_playback_switch (data.elem)) {
+		int val, err;
+		if ((err = snd_mixer_selem_get_playback_switch(data.elem, 0, &val)) < 0)
+			fprintf (stderr, "playback_switch: %s\n", snd_strerror (err));
+		return !val;
+	} else {
+		return !mixer_get_avg(i);
+	}
+}
+#undef data
+
+#else /* MIXER_IS_ALSA */
 int mixer_init(const char *name)
 {
 	unsigned int i;
 
-	if (name == 0 || name[0] == '\0')
+	if (name == 0 || name[0] == '\0') {
 		name = "vol";
+	}
 
 	/* open mixer */
 	if (mixer_fd <= 0) {
 		mixer_fd = open(MIXER_DEV, O_RDONLY);
 		if (mixer_fd == -1) {
-			ERR("can't open %s: %s", MIXER_DEV,
-			    strerror(errno));
+			NORM_ERR("can't open %s: %s", MIXER_DEV, strerror(errno));
 			return -1;
 		}
 	}
@@ -62,8 +244,9 @@ static int mixer_get(int i)
 	int val = -1;
 
 	if (ioctl(mixer_fd, MIXER_READ(i), &val) == -1) {
-		if (!rep)
-			ERR("mixer ioctl: %s", strerror(errno));
+		if (!rep) {
+			NORM_ERR("mixer ioctl: %s", strerror(errno));
+		}
 		rep = 1;
 		return 0;
 	}
@@ -72,18 +255,119 @@ static int mixer_get(int i)
 	return val;
 }
 
-int mixer_get_avg(int i)
+static int mixer_get_avg(int i)
 {
 	int v = mixer_get(i);
+
 	return ((v >> 8) + (v & 0xFF)) / 2;
 }
 
-int mixer_get_left(int i)
+static int mixer_get_left(int i)
 {
 	return mixer_get(i) >> 8;
 }
 
-int mixer_get_right(int i)
+static int mixer_get_right(int i)
 {
 	return mixer_get(i) & 0xFF;
 }
+int mixer_is_mute(int i)
+{
+	return !mixer_get(i);
+}
+
+#define mixer_to_255(i, x) x
+#endif /* MIXER_IS_ALSA */
+
+void parse_mixer_arg(struct text_object *obj, const char *arg)
+{
+	obj->data.l = mixer_init(arg);
+}
+
+/* chan specifies the channel to print:
+ * -1 := left channel
+ *  0 := channel average
+ *  1 := right channel
+ */
+static void print_mixer_chan(struct text_object *obj, int chan, char *p, int p_max_size)
+{
+	int val;
+
+	if (chan < 0)
+		val = mixer_get_left(obj->data.l);
+	else if (chan == 0)
+		val = mixer_get_avg(obj->data.l);
+	else
+		val = mixer_get_right(obj->data.l);
+
+	percent_print(p, p_max_size, val);
+}
+
+void print_mixer(struct text_object *obj, char *p, int p_max_size)
+{
+	print_mixer_chan(obj, 0, p, p_max_size);
+}
+
+void print_mixerl(struct text_object *obj, char *p, int p_max_size)
+{
+	print_mixer_chan(obj, -1, p, p_max_size);
+}
+
+void print_mixerr(struct text_object *obj, char *p, int p_max_size)
+{
+	print_mixer_chan(obj, 1, p, p_max_size);
+}
+
+int check_mixer_muted(struct text_object *obj)
+{
+	if (!mixer_is_mute(obj->data.l))
+		return 0;
+	return 1;
+}
+
+void scan_mixer_bar(struct text_object *obj, const char *arg)
+{
+	char buf1[64];
+	int n;
+
+	if (arg && sscanf(arg, "%63s %n", buf1, &n) >= 1) {
+		obj->data.i = mixer_init(buf1);
+		scan_bar(obj, arg + n);
+	} else {
+		obj->data.i = mixer_init(NULL);
+		scan_bar(obj, arg);
+	}
+}
+
+/* see print_mixer() above for a description of 'chan' */
+static void print_mixer_bar_chan(struct text_object *obj, int chan, char *p, int p_max_size)
+{
+	int val;
+
+	if (!p_max_size)
+		return;
+
+	if (chan < 0)
+		val = mixer_get_left(obj->data.i);
+	else if (chan == 0)
+		val = mixer_get_avg(obj->data.i);
+	else
+		val = mixer_get_right(obj->data.i);
+
+	new_bar(obj, p, p_max_size, mixer_to_255(obj->data.i, val));
+}
+
+void print_mixer_bar(struct text_object *obj, char *p, int p_max_size)
+{
+	print_mixer_bar_chan(obj, 0, p, p_max_size);
+}
+
+void print_mixerl_bar(struct text_object *obj, char *p, int p_max_size)
+{
+	print_mixer_bar_chan(obj, -1, p, p_max_size);
+}
+
+void print_mixerr_bar(struct text_object *obj, char *p, int p_max_size)
+{
+	print_mixer_bar_chan(obj, 1, p, p_max_size);
+}