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alsa-utils/alsamixer/alsamixer.c
Jaroslav Kysela 9417948722 Fixes for the dynamic group update. 
Fixed the mono group handling.
2000-01-04 12:20:49 +00:00

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/* AlsaMixer - Commandline mixer for the ALSA project
* Copyright (C) 1998, 1999 Tim Janik <timj@gtk.org> and 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 Library General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307, USA.
*
*
* ChangeLog:
*
* Mon Jan 3 23:33:42 MET 2000 Jaroslav Kysela <perex@suse.cz>
*
* * version 1.00
*
* * ported to new mixer API (group control)
*
* Sun Feb 21 19:55:01 1999 Tim Janik <timj@gtk.org>
*
* * bumped version to 0.10.
*
* * added scrollable text views.
* we now feature an F1 Help screen and an F2 /proc info screen.
* the help screen does still require lots of work though.
*
* * keys are evaluated view specific now.
*
* * we feature meta-keys now, e.g. M-Tab as back-tab.
*
* * if we are already in channel view and the user still hits Return,
* we do a refresh nonetheless, since 'r'/'R' got removed as a redraw
* key (reserved for capture volumes). 'l'/'L' is still preserved though,
* and actually needs to be to e.g. get around the xterm bold-artefacts.
*
* * support terminals that can't write into lower right corner.
*
* * undocumented '-s' option that will keep the screen to its
* minimum size, usefull for debugging only.
*
* Sun Feb 21 02:23:52 1999 Tim Janik <timj@gtk.org>
*
* * don't abort if snd_mixer_* functions failed due to EINTR,
* we simply retry on the next cycle. hopefully asoundlib preserves
* errno states correctly (Jaroslav can you asure that?).
*
* * feature WINCH correctly, so we make a complete relayout on
* screen resizes. don't abort on too-small screen sizes anymore,
* but simply beep.
*
* * redid the layout algorithm to fix some bugs and to preserve
* space for a flag indication line. the channels are
* nicer spread horizontally now (i.e. we also pad on the left and
* right screen bounds now).
*
* * various other minor fixes.
*
* * indicate whether ExactMode is active or not.
*
* * fixed coding style to follow the GNU coding conventions.
*
* * reverted capture volume changes since they broke ExactMode display.
*
* * composed ChangeLog entries.
*
* 1998/11/04 19:43:45 perex
*
* * Stereo capture source and route selection...
* provided by Carl van Schaik <carl@dreamcoat.che.uct.ac.za>.
*
* 1998/09/20 08:05:24 perex
*
* * Fixed -m option...
*
* 1998/10/29 22:50:10
*
* * initial checkin of alsamixer.c, written by Tim Janik, modified by
* Jaroslav Kysela to feature asoundlib.h instead of plain ioctl()s and
* automated updates after select() (i always missed that with OSS!).
*/
#include <stdio.h>
#include <unistd.h>
#include <fcntl.h>
#include <sys/ioctl.h>
#include <errno.h>
#include <string.h>
#include <stdlib.h>
#include <unistd.h>
#include <sys/signal.h>
#ifndef CURSESINC
#include <ncurses.h>
#else
#include CURSESINC
#endif
#include <time.h>
#include <sys/asoundlib.h>
/* example compilation commandline:
* clear; gcc -Wall -pipe -O2 alsamixer.c -o alsamixer -lasound -lncurses
*/
/* --- defines --- */
#define PRGNAME "alsamixer"
#define PRGNAME_UPPER "AlsaMixer"
#define VERSION "v1.00"
#define CHECK_ABORT(e,s) ({ if (errno != EINTR) mixer_abort ((e), (s)); })
#define GETCH_BLOCK(w) ({ timeout ((w) ? -1 : 0); })
#undef MAX
#define MAX(a, b) (((a) > (b)) ? (a) : (b))
#undef MIN
#define MIN(a, b) (((a) < (b)) ? (a) : (b))
#undef ABS
#define ABS(a) (((a) < 0) ? -(a) : (a))
#undef CLAMP
#define CLAMP(x, low, high) (((x) > (high)) ? (high) : (((x) < (low)) ? (low) : (x)))
#define MIXER_MIN_X (18) /* abs minimum: 18 */
#define MIXER_TEXT_Y (10)
#define MIXER_MIN_Y (MIXER_TEXT_Y + 3) /* abs minimum: 11 */
#define MIXER_BLACK (COLOR_BLACK)
#define MIXER_DARK_RED (COLOR_RED)
#define MIXER_RED (COLOR_RED | A_BOLD)
#define MIXER_GREEN (COLOR_GREEN | A_BOLD)
#define MIXER_ORANGE (COLOR_YELLOW)
#define MIXER_YELLOW (COLOR_YELLOW | A_BOLD)
#define MIXER_MARIN (COLOR_BLUE)
#define MIXER_BLUE (COLOR_BLUE | A_BOLD)
#define MIXER_MAGENTA (COLOR_MAGENTA)
#define MIXER_DARK_CYAN (COLOR_CYAN)
#define MIXER_CYAN (COLOR_CYAN | A_BOLD)
#define MIXER_GREY (COLOR_WHITE)
#define MIXER_GRAY (MIXER_GREY)
#define MIXER_WHITE (COLOR_WHITE | A_BOLD)
/* --- views --- */
enum {
VIEW_CHANNELS,
VIEW_HELP,
VIEW_PROCINFO
};
/* --- variables --- */
static WINDOW *mixer_window = NULL;
static int mixer_needs_resize = 0;
static int mixer_minimize = 0;
static int mixer_no_lrcorner = 0;
static int mixer_view = VIEW_CHANNELS;
static int mixer_max_x = 0;
static int mixer_max_y = 0;
static int mixer_ofs_x = 0;
static float mixer_extra_space = 0;
static int mixer_cbar_height = 0;
static int card_id = 0;
static int mixer_id = 0;
static snd_mixer_t *mixer_handle;
static char *mixer_card_name = NULL;
static char *mixer_device_name = NULL;
static snd_mixer_gid_t *mixer_gid = NULL;
static int mixer_n_groups = 0;
static int mixer_n_vis_groups = 0;
static int mixer_first_vis_group = 0;
static int mixer_focus_group = 0;
static int mixer_have_old_focus = 0;
static int mixer_volume_delta[SND_MIXER_CHN_LAST+1];
static int mixer_balance_volumes = 0;
static unsigned mixer_toggle_mute = 0;
static unsigned mixer_toggle_capture = 0;
static int mixer_hscroll_delta = 0;
static int mixer_vscroll_delta = 0;
/* --- text --- */
static int mixer_procinfo_xoffs = 0;
static int mixer_procinfo_yoffs = 0;
static int mixer_help_xoffs = 0;
static int mixer_help_yoffs = 0;
static char *mixer_help_text =
(
"\n"
" Esc exit alsamixer\n"
" F1 show Help screen\n"
" F2 show /proc info screen\n"
" Return return to main screen\n"
" Space toggle Record facility\n"
" Tab toggle ExactMode\n"
" m M mute both channels\n"
" < > mute left/right channel\n"
" Up increase left and right volume\n"
" Down decrease left and right volume\n"
" Right move (scroll) to the right next channel\n"
" Left move (scroll) to the left next channel\n"
"\n"
"Alsamixer has been written and is Copyrighted in 1998, 1999 by\n"
"Tim Janik <timj@gtk.org> and Jaroslav Kysela <perex@suse.cz>.\n"
);
/* --- draw contexts --- */
enum {
DC_DEFAULT,
DC_BACK,
DC_TEXT,
DC_PROMPT,
DC_CBAR_MUTE,
DC_CBAR_NOMUTE,
DC_CBAR_CAPTURE,
DC_CBAR_NOCAPTURE,
DC_CBAR_EMPTY,
DC_CBAR_LABEL,
DC_CBAR_FOCUS_LABEL,
DC_FOCUS,
DC_ANY_1,
DC_ANY_2,
DC_ANY_3,
DC_ANY_4,
DC_LAST
};
static int dc_fg[DC_LAST] = { 0 };
static int dc_attrib[DC_LAST] = { 0 };
static int dc_char[DC_LAST] = { 0 };
static int mixer_do_color = 1;
static void
mixer_init_dc (int c,
int n,
int f,
int b,
int a)
{
dc_fg[n] = f;
dc_attrib[n] = a;
dc_char[n] = c;
if (n > 0)
init_pair (n, dc_fg[n] & 0xf, b & 0x0f);
}
static int
mixer_dc (int n)
{
if (mixer_do_color)
attrset (COLOR_PAIR (n) | (dc_fg[n] & 0xfffffff0));
else
attrset (dc_attrib[n]);
return dc_char[n];
}
static void
mixer_init_draw_contexts (void)
{
start_color ();
mixer_init_dc ('.', DC_BACK, MIXER_WHITE, MIXER_BLACK, A_NORMAL);
mixer_init_dc ('.', DC_TEXT, MIXER_YELLOW, MIXER_BLACK, A_BOLD);
mixer_init_dc ('.', DC_PROMPT, MIXER_DARK_CYAN, MIXER_BLACK, A_NORMAL);
mixer_init_dc ('M', DC_CBAR_MUTE, MIXER_CYAN, MIXER_BLACK, A_BOLD);
mixer_init_dc ('-', DC_CBAR_NOMUTE, MIXER_CYAN, MIXER_BLACK, A_NORMAL);
mixer_init_dc ('x', DC_CBAR_CAPTURE, MIXER_DARK_RED, MIXER_BLACK, A_BOLD);
mixer_init_dc ('-', DC_CBAR_NOCAPTURE, MIXER_GRAY, MIXER_BLACK, A_NORMAL);
mixer_init_dc (' ', DC_CBAR_EMPTY, MIXER_GRAY, MIXER_BLACK, A_DIM);
mixer_init_dc ('.', DC_CBAR_LABEL, MIXER_WHITE, MIXER_BLUE, A_REVERSE | A_BOLD);
mixer_init_dc ('.', DC_CBAR_FOCUS_LABEL, MIXER_RED, MIXER_BLUE, A_REVERSE | A_BOLD);
mixer_init_dc ('.', DC_FOCUS, MIXER_RED, MIXER_BLACK, A_BOLD);
mixer_init_dc ('#', DC_ANY_1, MIXER_WHITE, MIXER_BLACK, A_BOLD);
mixer_init_dc ('#', DC_ANY_2, MIXER_GREEN, MIXER_BLACK, A_BOLD);
mixer_init_dc ('#', DC_ANY_3, MIXER_RED, MIXER_BLACK, A_BOLD);
mixer_init_dc ('.', DC_ANY_4, MIXER_WHITE, MIXER_GREEN, A_BOLD);
mixer_init_dc ('.', DC_ANY_4, MIXER_WHITE, MIXER_BLUE, A_BOLD);
}
#define DC_CBAR_FRAME (DC_CBAR_MUTE)
#define DC_FRAME (DC_PROMPT)
/* --- error types --- */
typedef enum
{
ERR_NONE,
ERR_OPEN,
ERR_FCN,
ERR_SIGNAL,
ERR_WINSIZE,
} ErrType;
/* --- prototypes --- */
static void
mixer_abort (ErrType error,
const char *err_string)
__attribute__
((noreturn));
/* --- functions --- */
static void
mixer_clear (int full_redraw)
{
int x, y;
int f = full_redraw ? 0 : 1;
mixer_dc (DC_BACK);
if (full_redraw)
clearok (mixer_window, TRUE);
/* buggy ncurses doesn't really write spaces with the specified
* color into the screen on clear () or erase ()
*/
for (x = f; x < mixer_max_x - f; x++)
for (y = f; y < mixer_max_y - f; y++)
mvaddch (y, x, ' ');
}
static void
mixer_abort (ErrType error,
const char *err_string)
{
if (mixer_window)
{
mixer_clear (TRUE);
refresh ();
keypad (mixer_window, FALSE);
leaveok (mixer_window, FALSE);
endwin ();
mixer_window = NULL;
}
printf ("\n");
switch (error)
{
case ERR_OPEN:
fprintf (stderr,
PRGNAME ": failed to open mixer #%i/#%i: %s\n",
card_id,
mixer_id,
snd_strerror (errno));
break;
case ERR_FCN:
fprintf (stderr,
PRGNAME ": function %s failed: %s\n",
err_string,
snd_strerror (errno));
break;
case ERR_SIGNAL:
fprintf (stderr,
PRGNAME ": aborting due to signal `%s'\n",
err_string);
break;
case ERR_WINSIZE:
fprintf (stderr,
PRGNAME ": screen size too small (%dx%d)\n",
mixer_max_x,
mixer_max_y);
break;
default:
break;
}
exit (error);
}
static int
mixer_cbar_get_pos (int group_index,
int *x_p,
int *y_p)
{
int x;
int y;
if (group_index < mixer_first_vis_group ||
group_index - mixer_first_vis_group >= mixer_n_vis_groups)
return FALSE;
group_index -= mixer_first_vis_group;
x = mixer_ofs_x;
x += (3 + 2 + 3 + 1) * group_index + mixer_extra_space * (group_index + 1);
if (MIXER_TEXT_Y + 10 < mixer_max_y)
y = mixer_max_y / 2 + 3;
else
y = (mixer_max_y + 1) / 2 + 3;
y += mixer_cbar_height / 2;
if (x_p)
*x_p = x;
if (y_p)
*y_p = y;
return TRUE;
}
static int
mixer_conv(int val, int omin, int omax, int nmin, int nmax)
{
int orange = omax - omin, nrange = nmax - nmin;
if (orange == 0)
return 0;
return ((nrange * (val - omin)) + (orange / 2)) / orange + nmin;
}
static void
mixer_update_cbar (int group_index)
{
char string[64], string1[64];
char c;
snd_mixer_group_t group;
int grp, grp1;
int vbalance, vbalance_count;
int vleft, vright, vleft1, vright1;
int x, y, i;
/* set new group indices and read info
*/
bzero(&group, sizeof(group));
group.gid = mixer_gid[group_index];
if (snd_mixer_group_read (mixer_handle, &group) < 0)
CHECK_ABORT (ERR_FCN, "snd_mixer_group_read()");
/* set new channel values
*/
if (group_index == mixer_focus_group &&
(mixer_volume_delta[SND_MIXER_CHN_FRONT_LEFT] ||
mixer_volume_delta[SND_MIXER_CHN_FRONT_RIGHT] ||
mixer_volume_delta[SND_MIXER_CHN_FRONT_CENTER] ||
mixer_volume_delta[SND_MIXER_CHN_REAR_LEFT] ||
mixer_volume_delta[SND_MIXER_CHN_REAR_RIGHT] ||
mixer_volume_delta[SND_MIXER_CHN_WOOFER] ||
mixer_toggle_mute ||
mixer_balance_volumes ||
mixer_toggle_capture))
{
vbalance = 0;
vbalance_count = 0;
if (group.caps & SND_MIXER_GRPCAP_VOLUME)
{
if (group.channels == SND_MIXER_CHN_MASK_MONO) {
if (!mixer_volume_delta[SND_MIXER_CHN_FRONT_LEFT])
mixer_volume_delta[SND_MIXER_CHN_FRONT_LEFT] = mixer_volume_delta[SND_MIXER_CHN_FRONT_RIGHT];
}
for (grp = 0, grp1 = -1; grp <= SND_MIXER_CHN_WOOFER; grp++)
{
if (!(group.channels & (1 << grp)))
continue;
if (grp1 < 0 || !(group.caps & SND_MIXER_GRPCAP_JOINTLY_VOLUME))
grp1 = grp;
if ((i = mixer_volume_delta[grp1]) < 0)
i = -i;
if (i > 0) {
if (i > 100)
i = group.max;
else
i = mixer_conv(i, 0, 100, group.min, group.max);
if (i <= 0)
i = 1;
if (mixer_volume_delta[grp1] < 0)
i = -i;
}
group.volume.values[grp] = CLAMP (group.volume.values[grp] + i, group.min, group.max);
vbalance += group.volume.values[grp];
vbalance_count++;
}
if (mixer_balance_volumes)
{
for (grp = 0; grp <= SND_MIXER_CHN_WOOFER; grp++)
group.volume.values[grp] = vbalance / vbalance_count;
mixer_balance_volumes = 0;
}
}
for (grp = 0; grp <= SND_MIXER_CHN_WOOFER; grp++)
mixer_volume_delta[grp] = 0;
if (group.caps & SND_MIXER_GRPCAP_MUTE) {
if (mixer_toggle_mute)
{
if (group.caps & SND_MIXER_GRPCAP_JOINTLY_MUTE)
mixer_toggle_mute = group.channels;
group.mute ^= (mixer_toggle_mute & group.channels);
}
}
mixer_toggle_mute = 0;
if (group.caps & SND_MIXER_GRPCAP_CAPTURE)
{
if (mixer_toggle_capture)
{
if (group.caps & SND_MIXER_GRPCAP_JOINTLY_CAPTURE)
mixer_toggle_capture = group.channels;
group.capture ^= (mixer_toggle_capture & group.channels);
}
}
mixer_toggle_capture = 0;
if (snd_mixer_group_write (mixer_handle, &group) < 0)
CHECK_ABORT (ERR_FCN, "snd_mixer_group_write()");
}
/* first, read values for the numbers to be displayed
*/
if (snd_mixer_group_read (mixer_handle, &group) < 0)
CHECK_ABORT (ERR_FCN, "snd_mixer_group_read()");
vleft = group.volume.names.front_left;
vleft1 = mixer_conv(vleft, group.min, group.max, 0, 100);
if (group.channels != SND_MIXER_CHN_MASK_MONO) {
vright = group.volume.names.front_right;
vright1 = mixer_conv(vright, group.min, group.max, 0, 100);
} else {
vright = vleft;
vright1 = vleft1;
}
/* get channel bar position
*/
if (!mixer_cbar_get_pos (group_index, &x, &y))
return;
/* setup colors
*/
mixer_init_dc ('#', DC_ANY_1, MIXER_WHITE, MIXER_BLACK, A_BOLD);
mixer_init_dc ('#', DC_ANY_2, MIXER_GREEN, MIXER_BLACK, A_BOLD);
mixer_init_dc ('#', DC_ANY_3, MIXER_RED, MIXER_BLACK, A_BOLD);
/* channel bar name
*/
mixer_dc (group_index == mixer_focus_group ? DC_CBAR_FOCUS_LABEL : DC_CBAR_LABEL);
strcpy(string1, group.gid.name);
string1[8] = 0;
for (i = 0; i < 8; i++)
{
string[i] = ' ';
}
sprintf (string + (8 - strlen (string1)) / 2, "%s ", string1);
string[8] = 0;
mvaddstr (y, x, string);
y--;
/* current channel values
*/
mixer_dc (DC_BACK);
mvaddstr (y, x, " ");
mixer_dc (DC_TEXT);
sprintf (string, "%d", vleft1);
mvaddstr (y, x + 3 - strlen (string), string);
mixer_dc (DC_CBAR_FRAME);
mvaddch (y, x + 3, '<');
mvaddch (y, x + 4, '>');
mixer_dc (DC_TEXT);
sprintf (string, "%d", vright1);
mvaddstr (y, x + 5, string);
y--;
/* left/right bar
*/
mixer_dc (DC_CBAR_FRAME);
mvaddstr (y, x, " ");
mvaddch (y, x + 2, ACS_LLCORNER);
mvaddch (y, x + 3, ACS_HLINE);
mvaddch (y, x + 4, ACS_HLINE);
mvaddch (y, x + 5, ACS_LRCORNER);
y--;
for (i = 0; i < mixer_cbar_height; i++)
{
mvaddstr (y - i, x, " ");
mvaddch (y - i, x + 2, ACS_VLINE);
mvaddch (y - i, x + 5, ACS_VLINE);
}
string[2] = 0;
for (i = 0; i < mixer_cbar_height; i++)
{
int dc;
if (i + 1 >= 0.8 * mixer_cbar_height)
dc = DC_ANY_3;
else if (i + 1 >= 0.4 * mixer_cbar_height)
dc = DC_ANY_2;
else
dc = DC_ANY_1;
mvaddch (y, x + 3, mixer_dc (vleft1 > i * 100 / mixer_cbar_height ? dc : DC_CBAR_EMPTY));
mvaddch (y, x + 4, mixer_dc (vright1 > i * 100 / mixer_cbar_height ? dc : DC_CBAR_EMPTY));
y--;
}
/* muted?
*/
mixer_dc (DC_BACK);
mvaddstr (y, x, " ");
c = group.caps & SND_MIXER_GRPCAP_MUTE ? '-' : ' ';
mixer_dc (DC_CBAR_FRAME);
mvaddch (y, x + 2, ACS_ULCORNER);
mvaddch (y, x + 3, mixer_dc (group.mute & SND_MIXER_CHN_MASK_FRONT_LEFT ?
DC_CBAR_MUTE : DC_CBAR_NOMUTE));
mvaddch (y, x + 4, mixer_dc (group.mute & SND_MIXER_CHN_MASK_FRONT_RIGHT ?
DC_CBAR_MUTE : DC_CBAR_NOMUTE));
mixer_dc (DC_CBAR_FRAME);
mvaddch (y, x + 5, ACS_URCORNER);
y--;
/* capture input?
*/
if (group.capture & SND_MIXER_CHN_MASK_STEREO)
{
mixer_dc (DC_CBAR_CAPTURE);
mvaddstr (y, x + 1, "CAPTUR");
if (group.capture & SND_MIXER_CHN_MASK_FRONT_LEFT)
mvaddstr (y + 1, x + 1, "L");
if (group.capture & SND_MIXER_CHN_MASK_FRONT_RIGHT)
mvaddstr (y + 1, x + 6, "R");
}
else if (group.caps & SND_MIXER_GRPCAP_CAPTURE)
for (i = 0; i < 6; i++)
mvaddch (y, x + 1 + i, mixer_dc (DC_CBAR_NOCAPTURE));
else
{
mixer_dc (DC_BACK);
mvaddstr (y, x, " ");
}
y--;
}
static void
mixer_update_cbars (void)
{
static int o_x = 0;
static int o_y = 0;
int i, x, y;
if (!mixer_cbar_get_pos (mixer_focus_group, &x, &y))
{
if (mixer_focus_group < mixer_first_vis_group)
mixer_first_vis_group = mixer_focus_group;
else if (mixer_focus_group >= mixer_first_vis_group + mixer_n_vis_groups)
mixer_first_vis_group = mixer_focus_group - mixer_n_vis_groups + 1;
mixer_cbar_get_pos (mixer_focus_group, &x, &y);
}
for (i = 0; i < mixer_n_vis_groups; i++)
mixer_update_cbar (i + mixer_first_vis_group);
/* draw focused cbar
*/
if (mixer_have_old_focus)
{
mixer_dc (DC_BACK);
mvaddstr (o_y, o_x, " ");
mvaddstr (o_y, o_x + 9, " ");
}
o_x = x - 1;
o_y = y;
mixer_dc (DC_FOCUS);
mvaddstr (o_y, o_x, "<");
mvaddstr (o_y, o_x + 9, ">");
mixer_have_old_focus = 1;
}
static void
mixer_draw_frame (void)
{
char string[128];
int i;
int max_len;
mixer_dc (DC_FRAME);
/* card name
*/
mixer_dc (DC_PROMPT);
mvaddstr (1, 2, "Card: ");
mixer_dc (DC_TEXT);
sprintf (string, "%s", mixer_card_name);
max_len = mixer_max_x - 2 - 6 - 2;
if (strlen (string) > max_len)
string[max_len] = 0;
addstr (string);
/* device name
*/
mixer_dc (DC_PROMPT);
mvaddstr (2, 2, "Chip: ");
mixer_dc (DC_TEXT);
sprintf (string, "%s", mixer_device_name);
max_len = mixer_max_x - 2 - 6 - 2;
if (strlen (string) > max_len)
string[max_len] = 0;
addstr (string);
/* lines
*/
mixer_dc (DC_PROMPT);
for (i = 1; i < mixer_max_y - 1; i++)
{
mvaddch (i, 0, ACS_VLINE);
mvaddch (i, mixer_max_x - 1, ACS_VLINE);
}
for (i = 1; i < mixer_max_x - 1; i++)
{
mvaddch (0, i, ACS_HLINE);
mvaddch (mixer_max_y - 1, i, ACS_HLINE);
}
/* corners
*/
mixer_dc (DC_PROMPT);
mvaddch (0, 0, ACS_ULCORNER);
mvaddch (0, mixer_max_x - 1, ACS_URCORNER);
mvaddch (mixer_max_y - 1, 0, ACS_LLCORNER);
if (!mixer_no_lrcorner)
mvaddch (mixer_max_y - 1, mixer_max_x - 1, ACS_LRCORNER);
else
{
mvaddch (mixer_max_y - 2, mixer_max_x - 1, ACS_LRCORNER);
mvaddch (mixer_max_y - 2, mixer_max_x - 2, ACS_ULCORNER);
mvaddch (mixer_max_y - 1, mixer_max_x - 2, ACS_LRCORNER);
}
/* program title
*/
sprintf (string, "%s %s", PRGNAME_UPPER, VERSION);
max_len = strlen (string);
if (mixer_max_x >= max_len + 4)
{
mixer_dc (DC_PROMPT);
mvaddch (0, mixer_max_x / 2 - max_len / 2 - 1, '[');
mvaddch (0, mixer_max_x / 2 - max_len / 2 + max_len, ']');
}
if (mixer_max_x >= max_len + 2)
{
mixer_dc (DC_TEXT);
mvaddstr (0, mixer_max_x / 2 - max_len / 2, string);
}
}
static char*
mixer_offset_text (char **t,
int col,
int *length)
{
char *p = *t;
char *r;
while (*p && *p != '\n' && col--)
p++;
if (*p == '\n' || !*p)
{
if (*p == '\n')
p++;
*length = 0;
*t = p;
return p;
}
r = p;
while (*r && *r != '\n' && (*length)--)
r++;
*length = r - p;
while (*r && *r != '\n')
r++;
if (*r == '\n')
r++;
*t = r;
return p;
}
static void
mixer_show_text (char *title,
char *text,
int *xoffs,
int *yoffs)
{
int tlines = 0, tcols = 0;
float hscroll, vscroll;
float hoffs, voffs;
char *p, *text_offs = text;
int x1, x2, y1, y2;
int i, n, l, r, block, stipple;
/* coords
*/
x1 = 2;
x2 = mixer_max_x - 3;
y1 = 4;
y2 = mixer_max_y - 2;
if ((y2 - y1) < 3 || (x2 - x1) < 3)
return;
/* text dimensions
*/
l = 0;
for (p = text; *p; p++)
if (*p == '\n')
{
tlines++;
tcols = MAX (l, tcols);
l = 0;
}
else
l++;
tcols = MAX (l, tcols);
if (p > text && *(p - 1) != '\n')
tlines++;
/* scroll areas / offsets
*/
l = x2 - x1 - 2;
if (l > tcols)
{
x1 += (l - tcols) / 2;
x2 = x1 + tcols + 1;
}
if (mixer_hscroll_delta)
{
*xoffs += mixer_hscroll_delta;
mixer_hscroll_delta = 0;
if (*xoffs < 0)
{
*xoffs = 0;
beep ();
}
else if (*xoffs > tcols - l - 1)
{
*xoffs = MAX (0, tcols - l - 1);
beep ();
}
}
if (tcols - l - 1 <= 0)
{
hscroll = 1;
hoffs = 0;
}
else
{
hscroll = ((float) l) / tcols;
hoffs = ((float) *xoffs) / (tcols - l - 1);
}
l = y2 - y1 - 2;
if (l > tlines)
{
y1 += (l - tlines) / 2;
y2 = y1 + tlines + 1;
}
if (mixer_vscroll_delta)
{
*yoffs += mixer_vscroll_delta;
mixer_vscroll_delta = 0;
if (*yoffs < 0)
{
*yoffs = 0;
beep ();
}
else if (*yoffs > tlines - l - 1)
{
*yoffs = MAX (0, tlines - l - 1);
beep ();
}
}
if (tlines - l - 1 <= 0)
{
voffs = 0;
vscroll = 1;
}
else
{
vscroll = ((float) l) / tlines;
voffs = ((float) *yoffs) / (tlines - l - 1);
}
/* colors
*/
mixer_init_dc ('.', DC_ANY_3, MIXER_YELLOW, MIXER_BLUE, A_BOLD);
mixer_init_dc ('.', DC_ANY_4, MIXER_WHITE, MIXER_BLUE, A_BOLD);
mixer_dc (DC_ANY_4);
/* corners
*/
mvaddch (y2, x2, ACS_LRCORNER);
mvaddch (y2, x1, ACS_LLCORNER);
mvaddch (y1, x1, ACS_ULCORNER);
mvaddch (y1, x2, ACS_URCORNER);
/* left + upper border
*/
for (i = y1 + 1; i < y2; i++)
mvaddch (i, x1, ACS_VLINE);
for (i = x1 + 1; i < x2; i++)
mvaddch (y1, i, ACS_HLINE);
if (title)
{
l = strlen (title);
if (l <= x2 - x1 - 3)
{
mvaddch (y1, x1 + 1 + (x2 - x1 - l) / 2 - 1, '[');
mvaddch (y1, x1 + 1 + (x2 - x1 - l) / 2 + l, ']');
}
if (l <= x2 - x1 - 1)
{
mixer_dc (DC_ANY_3);
mvaddstr (y1, x1 + 1 + (x2 - x1 - l) / 2, title);
}
mixer_dc (DC_ANY_4);
}
stipple = ACS_CKBOARD;
block = ACS_BLOCK;
if (block == '#' && ACS_BOARD == '#')
{
block = stipple;
stipple = ACS_BLOCK;
}
/* lower scroll border
*/
l = x2 - x1 - 1;
n = hscroll * l;
r = (hoffs + 1.0 / (2 * (l - n - 1))) * (l - n - 1);
for (i = 0; i < l; i++)
mvaddch (y2, i + x1 + 1, hscroll >= 1 ? ACS_HLINE :
i >= r && i <= r + n ? block : stipple);
/* right scroll border
*/
l = y2 - y1 - 1;
n = vscroll * l;
r = (voffs + 1.0 / (2 * (l - n - 1))) * (l - n - 1);
for (i = 0; i < l; i++)
mvaddch (i + y1 + 1, x2, vscroll >= 1 ? ACS_VLINE :
i >= r && i <= r + n ? block : stipple);
/* show text
*/
x1++; y1++;
for (i = 0; i < *yoffs; i++)
{
l = 0;
mixer_offset_text (&text_offs, 0, &l);
}
for (i = y1; i < y2; i++)
{
l = x2 - x1;
p = mixer_offset_text (&text_offs, *xoffs, &l);
n = x1;
while (l--)
mvaddch (i, n++, *p++);
while (n < x2)
mvaddch (i, n++, ' ');
}
}
struct vbuffer
{
char *buffer;
int size;
int len;
};
static void
vbuffer_kill (struct vbuffer *vbuf)
{
if (vbuf->size)
free (vbuf->buffer);
vbuf->buffer = NULL;
vbuf->size = 0;
vbuf->len = 0;
}
#define vbuffer_append_string(vb,str) vbuffer_append (vb, str, strlen (str))
static void
vbuffer_append (struct vbuffer *vbuf,
char *text,
int len)
{
if (vbuf->size - vbuf->len <= len)
{
vbuf->size += len + 1;
vbuf->buffer = realloc (vbuf->buffer, vbuf->size);
}
memcpy (vbuf->buffer + vbuf->len, text, len);
vbuf->len += len;
vbuf->buffer[vbuf->len] = 0;
}
static int
vbuffer_append_file (struct vbuffer *vbuf,
char *name)
{
int fd;
fd = open (name, O_RDONLY);
if (fd >= 0)
{
char buffer[1025];
int l;
do
{
l = read (fd, buffer, 1024);
vbuffer_append (vbuf, buffer, MAX (0, l));
}
while (l > 0 || (l < 0 && (errno == EAGAIN || errno == EINTR)));
close (fd);
return 0;
}
else
return 1;
}
static void
mixer_show_procinfo (void)
{
struct vbuffer vbuf = { NULL, 0, 0 };
vbuffer_append_string (&vbuf, "\n");
vbuffer_append_string (&vbuf, "/proc/asound/version:\n");
vbuffer_append_string (&vbuf, "====================\n");
if (vbuffer_append_file (&vbuf, "/proc/asound/version"))
{
vbuffer_kill (&vbuf);
mixer_procinfo_xoffs = mixer_procinfo_yoffs = 0;
mixer_show_text ("/proc",
" No /proc information available. ",
&mixer_procinfo_xoffs, &mixer_procinfo_yoffs);
return;
}
else
vbuffer_append_file (&vbuf, "/proc/asound/meminfo");
vbuffer_append_string (&vbuf, "\n");
vbuffer_append_string (&vbuf, "/proc/asound/cards:\n");
vbuffer_append_string (&vbuf, "===================\n");
if (vbuffer_append_file (&vbuf, "/proc/asound/cards"))
vbuffer_append_string (&vbuf, "No information available.\n");
vbuffer_append_string (&vbuf, "\n");
vbuffer_append_string (&vbuf, "/proc/asound/devices:\n");
vbuffer_append_string (&vbuf, "=====================\n");
if (vbuffer_append_file (&vbuf, "/proc/asound/devices"))
vbuffer_append_string (&vbuf, "No information available.\n");
vbuffer_append_string (&vbuf, "\n");
vbuffer_append_string (&vbuf, "/proc/asound/oss-devices:\n");
vbuffer_append_string (&vbuf, "=========================\n");
if (vbuffer_append_file (&vbuf, "/proc/asound/oss-devices"))
vbuffer_append_string (&vbuf, "No information available.\n");
vbuffer_append_string (&vbuf, "\n");
vbuffer_append_string (&vbuf, "/proc/asound/timers:\n");
vbuffer_append_string (&vbuf, "====================\n");
if (vbuffer_append_file (&vbuf, "/proc/asound/timers"))
vbuffer_append_string (&vbuf, "No information available.\n");
vbuffer_append_string (&vbuf, "\n");
vbuffer_append_string (&vbuf, "/proc/asound/pcm:\n");
vbuffer_append_string (&vbuf, "=================\n");
if (vbuffer_append_file (&vbuf, "/proc/asound/pcm"))
vbuffer_append_string (&vbuf, "No information available.\n");
mixer_show_text ("/proc", vbuf.buffer,
&mixer_procinfo_xoffs, &mixer_procinfo_yoffs);
vbuffer_kill (&vbuf);
}
static void
mixer_init (void)
{
static snd_mixer_info_t mixer_info = { 0, };
static struct snd_ctl_hw_info hw_info;
snd_ctl_t *ctl_handle;
if (snd_ctl_open (&ctl_handle, card_id) < 0)
mixer_abort (ERR_OPEN, "snd_ctl_open");
if (snd_ctl_hw_info (ctl_handle, &hw_info) < 0)
mixer_abort (ERR_FCN, "snd_ctl_hw_info");
snd_ctl_close (ctl_handle);
/* open mixer device
*/
if (snd_mixer_open (&mixer_handle, card_id, mixer_id) < 0)
mixer_abort (ERR_OPEN, "snd_mixer_open");
/* setup global variables
*/
if (snd_mixer_info (mixer_handle, &mixer_info) < 0)
mixer_abort (ERR_FCN, "snd_mixer_info");
mixer_card_name = hw_info.name;
mixer_device_name = mixer_info.name;
}
static void
mixer_reinit (void)
{
snd_mixer_groups_t groups;
int focus_loaded = 0, idx;
snd_mixer_gid_t focus_gid;
if (mixer_gid) {
focus_gid = mixer_gid[mixer_focus_group];
focus_loaded = 1;
}
while (1) {
bzero(&groups, sizeof(groups));
if (snd_mixer_groups(mixer_handle, &groups) < 0)
mixer_abort (ERR_FCN, "snd_mixer_groups");
mixer_n_groups = groups.groups_over;
if (mixer_n_groups > 0) {
groups.groups_size = mixer_n_groups;
groups.pgroups = (snd_mixer_gid_t *)malloc(sizeof(snd_mixer_gid_t) * mixer_n_groups);
if (groups.pgroups == NULL)
mixer_abort (ERR_FCN, "malloc");
groups.groups_over = 0;
groups.groups = 0;
if (snd_mixer_groups(mixer_handle, &groups) < 0)
mixer_abort (ERR_FCN, "snd_mixer_groups");
if (groups.groups_over > 0) {
free(groups.pgroups);
continue;
}
}
if (mixer_gid)
free(mixer_gid);
mixer_gid = groups.pgroups;
break;
}
mixer_focus_group = 0;
if (focus_loaded) {
for (idx = 0; idx < mixer_n_groups; idx++) {
if (!memcmp(&focus_gid, &mixer_gid[idx], sizeof(focus_gid))) {
mixer_focus_group = idx;
break;
}
}
}
}
static void
mixer_init_window (void)
{
/* initialize ncurses
*/
mixer_window = initscr ();
mixer_no_lrcorner = tigetflag ("xenl") != 1 && tigetflag ("am") != 1;
if (mixer_do_color)
mixer_do_color = has_colors ();
mixer_init_draw_contexts ();
/* react on key presses
*/
cbreak ();
noecho ();
leaveok (mixer_window, TRUE);
keypad (mixer_window, TRUE);
GETCH_BLOCK (1);
/* init mixer screen
*/
getmaxyx (mixer_window, mixer_max_y, mixer_max_x);
if (mixer_minimize)
{
mixer_max_x = MIXER_MIN_X;
mixer_max_y = MIXER_MIN_Y;
}
mixer_ofs_x = 2 /* extra begin padding: */ + 1;
/* required allocations */
mixer_n_vis_groups = (mixer_max_x - mixer_ofs_x * 2 + 1) / 9;
mixer_n_vis_groups = CLAMP (mixer_n_vis_groups, 1, mixer_n_groups);
mixer_extra_space = mixer_max_x - mixer_ofs_x * 2 + 1 - mixer_n_vis_groups * 9;
mixer_extra_space = MAX (0, mixer_extra_space / (mixer_n_vis_groups + 1));
if (MIXER_TEXT_Y + 10 < mixer_max_y)
mixer_cbar_height = 10 + MAX (0, mixer_max_y - MIXER_TEXT_Y - 10 ) / 2;
else
mixer_cbar_height = MAX (1, mixer_max_y - MIXER_TEXT_Y);
mixer_clear (TRUE);
}
static void
mixer_resize (void)
{
struct winsize winsz = { 0, };
mixer_needs_resize = 0;
if (ioctl (fileno (stdout), TIOCGWINSZ, &winsz) >= 0 &&
winsz.ws_row && winsz.ws_col)
{
keypad (mixer_window, FALSE);
leaveok (mixer_window, FALSE);
endwin ();
mixer_max_x = MAX (2, winsz.ws_col);
mixer_max_y = MAX (2, winsz.ws_row);
/* humpf, i don't get it, if only the number of rows change,
* ncurses will segfault shortly after (could trigger that with mc as well).
*/
resizeterm (mixer_max_y + 1, mixer_max_x + 1);
resizeterm (mixer_max_y, mixer_max_x);
mixer_init_window ();
if (mixer_max_x < MIXER_MIN_X ||
mixer_max_y < MIXER_MIN_Y)
beep (); // mixer_abort (ERR_WINSIZE, "");
mixer_have_old_focus = 0;
}
}
static void
mixer_callback_rebuild (void *private_data)
{
/* we don't actually need to update the individual channels because
* we redraw the whole screen upon every main iteration anyways.
*/
mixer_reinit ();
}
static void
mixer_callback_group (void *private_data, int cmd, snd_mixer_gid_t *gid)
{
mixer_reinit ();
}
static void
mixer_set_delta(int delta)
{
int grp;
for (grp = 0; grp <= SND_MIXER_CHN_WOOFER; grp++)
mixer_volume_delta[grp] = delta;
}
static void
mixer_add_delta(int delta)
{
int grp;
for (grp = 0; grp <= SND_MIXER_CHN_WOOFER; grp++)
mixer_volume_delta[grp] += delta;
}
static int
mixer_iteration (void)
{
struct timeval delay = { 0, };
snd_mixer_callbacks_t callbacks = { 0, };
int mixer_fd;
fd_set rfds;
int finished = 0;
int key = 0;
int old_view;
callbacks.rebuild = mixer_callback_rebuild;
callbacks.group = mixer_callback_group;
/* setup for select on stdin and the mixer fd */
mixer_fd = snd_mixer_file_descriptor (mixer_handle);
FD_ZERO (&rfds);
FD_SET (fileno (stdin), &rfds);
FD_SET (mixer_fd, &rfds);
delay.tv_sec = 0;
delay.tv_usec = 0 * 100 * 1000;
finished = select (mixer_fd + 1, &rfds, NULL, NULL, mixer_needs_resize ? &delay : NULL) < 0;
/* don't abort on handled signals */
if (finished && errno == EINTR)
{
FD_ZERO (&rfds);
finished = 0;
}
else if (mixer_needs_resize)
mixer_resize ();
if (FD_ISSET (mixer_fd, &rfds))
snd_mixer_read (mixer_handle, &callbacks);
if (FD_ISSET (fileno (stdin), &rfds))
key = getch ();
old_view = mixer_view;
/* feature Escape prefixing for some keys */
if (key == 27)
{
GETCH_BLOCK (0);
key = getch ();
GETCH_BLOCK (1);
switch (key)
{
case 9: /* Tab */
key = KEY_BTAB;
break;
default:
key = 27;
break;
}
}
/* general keys */
switch (key)
{
case 0:
/* ignore */
break;
case 27: /* Escape */
finished = 1;
key = 0;
break;
case 13: /* Return */
case 10: /* NewLine */
if (mixer_view == VIEW_CHANNELS)
mixer_clear (FALSE);
mixer_view = VIEW_CHANNELS;
key = 0;
break;
case 'h':
case 'H':
case KEY_F (1):
mixer_view = VIEW_HELP;
key = 0;
break;
case '/':
case KEY_F (2):
mixer_view = VIEW_PROCINFO;
key = 0;
break;
case 'L':
case 'l':
mixer_clear (TRUE);
break;
}
if (key && (mixer_view == VIEW_HELP ||
mixer_view == VIEW_PROCINFO))
switch (key)
{
case 9: /* Tab */
mixer_hscroll_delta += 8;
break;
case KEY_BTAB:
mixer_hscroll_delta -= 8;
break;
case KEY_A1:
mixer_hscroll_delta -= 1;
mixer_vscroll_delta -= 1;
break;
case KEY_A3:
mixer_hscroll_delta += 1;
mixer_vscroll_delta -= 1;
break;
case KEY_C1:
mixer_hscroll_delta -= 1;
mixer_vscroll_delta += 1;
break;
case KEY_C3:
mixer_hscroll_delta += 1;
mixer_vscroll_delta += 1;
break;
case KEY_RIGHT:
case 'n':
mixer_hscroll_delta += 1;
break;
case KEY_LEFT:
case 'p':
mixer_hscroll_delta -= 1;
break;
case KEY_UP:
case 'w':
case 'W':
mixer_vscroll_delta -= 1;
break;
case KEY_DOWN:
case 'x':
case 'X':
mixer_vscroll_delta += 1;
break;
case KEY_PPAGE:
case 'B':
case 'b':
mixer_vscroll_delta -= (mixer_max_y - 5) / 2;
break;
case KEY_NPAGE:
case ' ':
mixer_vscroll_delta += (mixer_max_y - 5) / 2;
break;
case KEY_BEG:
case KEY_HOME:
mixer_hscroll_delta -= 0xffffff;
break;
case KEY_LL:
case KEY_END:
mixer_hscroll_delta += 0xffffff;
break;
}
if (key && mixer_view == VIEW_CHANNELS)
switch (key)
{
case KEY_RIGHT:
case 'n':
mixer_focus_group += 1;
break;
case KEY_LEFT:
case 'p':
mixer_focus_group -= 1;
break;
case KEY_PPAGE:
mixer_set_delta(5);
break;
case KEY_NPAGE:
mixer_set_delta(-5);
break;
case KEY_BEG:
case KEY_HOME:
mixer_set_delta(100);
break;
case KEY_LL:
case KEY_END:
mixer_set_delta(-100);
break;
case '+':
mixer_set_delta(1);
break;
case '-':
mixer_set_delta(-1);
break;
case 'w':
case KEY_UP:
mixer_set_delta(1);
case 'W':
mixer_add_delta(1);
break;
case 'x':
case KEY_DOWN:
mixer_set_delta(-1);
case 'X':
mixer_add_delta(-1);
break;
case 'q':
mixer_volume_delta[SND_MIXER_CHN_FRONT_LEFT] = 1;
case 'Q':
mixer_volume_delta[SND_MIXER_CHN_FRONT_LEFT] += 1;
break;
case 'y':
case 'z':
mixer_volume_delta[SND_MIXER_CHN_FRONT_LEFT] = -1;
case 'Y':
case 'Z':
mixer_volume_delta[SND_MIXER_CHN_FRONT_LEFT] += -1;
break;
case 'e':
mixer_volume_delta[SND_MIXER_CHN_FRONT_RIGHT] = 1;
case 'E':
mixer_volume_delta[SND_MIXER_CHN_FRONT_RIGHT] += 1;
break;
case 'c':
mixer_volume_delta[SND_MIXER_CHN_FRONT_RIGHT] = -1;
case 'C':
mixer_volume_delta[SND_MIXER_CHN_FRONT_RIGHT] += -1;
break;
case 'm':
case 'M':
mixer_toggle_mute |= SND_MIXER_CHN_MASK_STEREO;
break;
case 'b':
case 'B':
case '=':
mixer_balance_volumes = 1;
break;
case '<':
case ',':
mixer_toggle_mute |= SND_MIXER_CHN_MASK_FRONT_LEFT;
break;
case '>':
case '.':
mixer_toggle_mute |= SND_MIXER_CHN_MASK_FRONT_RIGHT;
break;
case ' ':
mixer_toggle_capture |= SND_MIXER_CHN_MASK_STEREO;
break;
case KEY_IC:
case ';':
mixer_toggle_capture |= SND_MIXER_CHN_MASK_FRONT_LEFT;
break;
case '\'':
case KEY_DC:
mixer_toggle_capture |= SND_MIXER_CHN_MASK_FRONT_RIGHT;
break;
}
if (old_view != mixer_view)
mixer_clear (FALSE);
mixer_focus_group = CLAMP (mixer_focus_group, 0, mixer_n_groups - 1);
return finished;
}
static void
mixer_winch (void)
{
signal (SIGWINCH, (void*) mixer_winch);
mixer_needs_resize++;
}
static void
mixer_signal_handler (int signal)
{
if (signal != SIGSEGV)
mixer_abort (ERR_SIGNAL, sys_siglist[signal]);
else
{
fprintf (stderr, "\nSegmentation fault.\n");
_exit (11);
}
}
int
main (int argc,
char **argv)
{
int opt;
/* parse args
*/
do
{
opt = getopt (argc, argv, "c:m:shg");
switch (opt)
{
case '?':
case 'h':
fprintf (stderr, "%s %s\n", PRGNAME_UPPER, VERSION);
fprintf (stderr, "Usage: %s [-c <card: 1..%i>] [-m <mixer: 0..1>] [-z]\n", PRGNAME, snd_cards ());
mixer_abort (ERR_NONE, "");
case 'c':
card_id = snd_card_name (optarg);
break;
case 'g':
mixer_do_color = !mixer_do_color;
break;
case 'm':
mixer_id = CLAMP (optarg[0], '0', '1') - '0';
break;
case 's':
mixer_minimize = 1;
break;
}
}
while (opt > 0);
/* initialize mixer
*/
mixer_init ();
mixer_reinit ();
/* setup signal handlers
*/
signal (SIGINT, mixer_signal_handler);
signal (SIGTRAP, mixer_signal_handler);
signal (SIGABRT, mixer_signal_handler);
signal (SIGQUIT, mixer_signal_handler);
signal (SIGBUS, mixer_signal_handler);
signal (SIGSEGV, mixer_signal_handler);
signal (SIGPIPE, mixer_signal_handler);
signal (SIGTERM, mixer_signal_handler);
/* initialize ncurses
*/
mixer_init_window ();
if (mixer_max_x < MIXER_MIN_X ||
mixer_max_y < MIXER_MIN_Y)
beep (); // mixer_abort (ERR_WINSIZE, "");
signal (SIGWINCH, (void*) mixer_winch);
do
{
/* draw window upon every iteration */
if (!mixer_needs_resize)
{
switch (mixer_view)
{
case VIEW_CHANNELS:
mixer_update_cbars ();
break;
case VIEW_HELP:
mixer_show_text ("Help", mixer_help_text, &mixer_help_xoffs, &mixer_help_yoffs);
break;
case VIEW_PROCINFO:
mixer_show_procinfo ();
break;
}
mixer_draw_frame ();
refresh ();
}
}
while (!mixer_iteration ());
mixer_abort (ERR_NONE, "");
};
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